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WO2024208230A1 - 一种通信方法及装置 - Google Patents

一种通信方法及装置 Download PDF

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Publication number
WO2024208230A1
WO2024208230A1 PCT/CN2024/085686 CN2024085686W WO2024208230A1 WO 2024208230 A1 WO2024208230 A1 WO 2024208230A1 CN 2024085686 W CN2024085686 W CN 2024085686W WO 2024208230 A1 WO2024208230 A1 WO 2024208230A1
Authority
WO
WIPO (PCT)
Prior art keywords
terminal
cell
information
broadcast service
broadcast
Prior art date
Application number
PCT/CN2024/085686
Other languages
English (en)
French (fr)
Inventor
张海森
李晨琬
陈磊
李秉肇
许斌
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN202311248414.1A external-priority patent/CN118785106A/zh
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Publication of WO2024208230A1 publication Critical patent/WO2024208230A1/zh

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation

Definitions

  • the embodiments of the present application relate to the field of communications, and in particular, to a communication method and device.
  • Multicast and broadcast service is a service for multiple terminals. From the perspective of end-to-end management and control process, MBS service can be divided into multicast service and broadcast service. For broadcast service, two logical channels are currently introduced: MBS control channel (MCCH) and MBS traffic channel (MTCH).
  • MCCH MBS control channel
  • MTCH MBS traffic channel
  • MCCH is used to transmit control information.
  • the message containing the control information can be called MCCH message.
  • the control information can include MTCH configuration information.
  • MTCH is used to transmit data of broadcast services.
  • MCCH messages are transmitted periodically, and their configuration information is carried in the system information block (SIB), such as SIB20.
  • SIB system information block
  • the 3rd Generation Partnership Project (3GPP) defines reduced capability (RedCap) terminals and enhanced RedCap (eRedCap) terminals.
  • the maximum baseband bandwidths supported by the two are 20 megahertz (MHz) and 5MHz respectively, which means that for some services, downlink information can only be received by RedCap terminals or eRedCap terminals when it is scheduled to be transmitted within 20MHz or 5MHz.
  • the present application provides a communication method and device, which can enable a first terminal to receive broadcast services as much as possible, thereby improving the coverage of broadcast services and user experience.
  • a communication method which can be performed by a network device, or by a component of the network device, such as a processor, a chip, or a chip system of the network device, or by a logic module or software that can implement all or part of the network device functions.
  • the method includes: determining first information, and sending the first information.
  • the first information indicates whether the first cell supports providing a broadcast service to a first terminal, and the first terminal is a reduced capability RedCap terminal and/or an enhanced reduced capability eRedCap terminal.
  • the network device sends the first information to indicate whether the first cell supports providing broadcast services to the first terminal, so that the first terminal can learn whether it can receive the broadcast services provided by the first cell by broadcasting according to the first information. If the first cell supports providing broadcast services to the first terminal, the first terminal can receive the broadcast services provided by the first cell by broadcasting. If the first cell does not support providing broadcast services to the first terminal, the first terminal cannot receive the broadcast services provided by the first cell by broadcasting.
  • the first terminal can learn whether it can receive the broadcast services provided by the first cell by broadcasting, when the first terminal learns that it cannot receive the broadcast services provided by the first cell by broadcasting, the first terminal can take measures (such as initiating a unicast connection request) to receive the broadcast services provided by the first cell as much as possible, thereby improving the coverage of the broadcast services and improving the user experience of the first terminal user.
  • measures such as initiating a unicast connection request
  • the first information indicates whether the first cell supports providing a broadcast service to the first terminal, including: the first information indicates that the first cell supports at least one broadcast service provided to the first terminal, and/or the first cell does not support at least one broadcast service provided to the first terminal. Based on this possible design, it is possible to indicate, with the service as the granularity, whether the first cell supports or does not support the broadcast service provided to the first terminal.
  • the first information is carried in a multicast broadcast service control channel MCCH message.
  • the first information when the first cell supports providing at least one broadcast service of the first cell to the first terminal, the first information indicates that the first cell supports providing the broadcast service to the first terminal; or, when the first cell supports providing all broadcast services of the first cell to the first terminal, the first information indicates that the first cell supports providing the broadcast service to the first terminal. Based on this possible design, it is possible to indicate whether the cell supports providing the broadcast service to the first terminal at a cell granularity.
  • the method also includes: sending second information, the second information indicating that the first cell supports at least one broadcast service provided to the first terminal, and/or that the first cell does not support at least one broadcast service provided to the first terminal.
  • the first terminal can learn which broadcast services the first cell supports providing to it, and/or which services the first cell does not support providing to it, thereby determining whether the first cell supports providing the broadcast service of interest or being received to it, and then determining whether the first cell supports providing the broadcast service of interest or being received to it.
  • a cell does not support the provision of the broadcast service, it takes measures (such as initiating a unicast connection request) to receive the broadcast service as much as possible.
  • the second information is carried in the MCCH message.
  • the first information is carried in system information of the first cell.
  • a communication method which can be executed by a first terminal, or by a component of the first terminal, such as a processor, chip, or chip system of the first terminal, or by a logic module or software that can implement all or part of the functions of the first terminal.
  • the method includes: receiving first information, the first information indicating whether the first cell supports providing broadcast services to the first terminal, and the first terminal is a reduced capability RedCap terminal and/or an enhanced reduced capability eRedCap terminal. Determine whether the broadcast service provided by the first cell can be received by broadcasting according to the first information.
  • the technical effects brought about by the second aspect can refer to the technical effects brought about by the above-mentioned first aspect, and will not be repeated here.
  • the first information indicates whether the first cell supports providing broadcast services to the first terminal, including: the first information indicates that the first cell supports at least one broadcast service provided to the first terminal, and/or the first cell does not support at least one broadcast service provided to the first terminal.
  • the first information when the first cell supports providing at least one broadcast service of the first cell to the first terminal, the first information indicates that the first cell supports providing the broadcast service to the first terminal; or, when the first cell supports providing all broadcast services of the first cell to the first terminal, the first information indicates that the first cell supports providing the broadcast service to the first terminal.
  • the method also includes: receiving second information, the second information indicating that the first cell supports at least one broadcast service provided to the first terminal, and/or the first cell does not support at least one broadcast service provided to the first terminal.
  • the method when the first information indicates that the first cell supports providing a first broadcast service to a first terminal, the method further includes: receiving first configuration information, where the first configuration information is configuration information for the first broadcast service of the first terminal; and receiving the first broadcast service according to the first configuration information.
  • the method when the first information indicates that the first cell does not support providing the first broadcast service to the first terminal, the method further includes: initiating a unicast reception request, where the unicast reception request is used to request reception of the first broadcast service via unicast.
  • the first terminal when the first terminal learns that it cannot receive the first broadcast service provided by the first cell via broadcast, the first terminal can initiate a unicast connection request to request to receive the first broadcast service via unicast, thereby improving the coverage of the first broadcast service and improving the user experience of the first terminal user.
  • a communication method which can be executed by a network device, or by a component of the network device, such as a processor, chip, or chip system of the network device, or by a logic module or software that can implement all or part of the network device function.
  • the method includes: determining third information, and sending the third information.
  • the third information indicates whether the second terminal is allowed to receive a multicast broadcast service control channel MCCH message provided to the first terminal, or the third information indicates whether the second terminal is allowed to receive a broadcast service provided to the first terminal.
  • the first terminal includes a reduced capability RedCap terminal and/or an enhanced reduced capability eRedCap terminal, and the maximum operating bandwidth of the second terminal is greater than the maximum operating bandwidth of the first terminal.
  • the network device sends third information indicating whether the second terminal is allowed to receive the MCCH message or broadcast service provided to the first terminal.
  • the third information indicates that the second terminal is not allowed to receive the MCCH message or broadcast service provided to the first terminal, the power consumption of the second terminal can be saved.
  • a communication method which can be executed by a second terminal, or by a component of the second terminal, such as a processor, chip, or chip system of the second terminal, or by a logic module or software that can realize all or part of the functions of the second terminal.
  • the method includes: receiving third information, the third information indicating whether the second terminal is allowed to receive a multicast broadcast service control channel MCCH message provided to the first terminal, or the third information indicating whether the second terminal is allowed to receive a broadcast service provided to the first terminal; determining whether to receive a multicast broadcast service control channel MCCH message provided to the first terminal according to the third information, or determining whether to receive a broadcast service provided to the first terminal according to the third information.
  • the first terminal includes a reduced capability RedCap terminal and/or an enhanced reduced capability eRedCap terminal, and the maximum operating bandwidth of the second terminal is greater than the maximum operating bandwidth of the first terminal.
  • the technical effects brought about by the fourth aspect can refer to the technical effects brought about by the above-mentioned third aspect, and will not be repeated here.
  • the second information is carried in any one of the following: system information, downlink control information DCI, or MCCH message.
  • a communication method which can be executed by a network device, or by a component of the network device, such as a processor, a chip, or a chip system of the network device, or by a logic module or software that can implement all or part of the functions of the network device.
  • the method includes: determining fourth information, and sending the fourth information.
  • the fourth information indicates whether the second cell provides the first terminal with the fourth information.
  • the second broadcast service is a broadcast service provided by a third cell, and the second cell is a neighboring cell of the third cell.
  • the third cell belongs to the network device, or the network device is the network device described in the third cell.
  • the network device sends fourth information to indicate whether the neighboring cell of the third cell provides the second broadcast service to the first terminal.
  • the first terminal can reselect to the neighboring cell that provides the second broadcast service to the first terminal according to the fourth information when reselecting the cell, so that the first terminal can improve the continuity of the second broadcast service when the third cell is receiving the second broadcast service, or can improve the success rate of receiving the second broadcast service when the first terminal does not receive the second broadcast service in the third cell but is interested in the second broadcast service.
  • the method may also include: sending seventh information, the seventh information indicating at least one neighboring cell of the third cell, the neighboring cell providing one or more broadcast services provided by the third cell, at least one neighboring cell including the second cell, and the one or more broadcast services provided by the third cell including the second broadcast service.
  • the neighboring cell provides one or more broadcast services provided by the third cell to the first terminal, or the neighboring cell provides one or more broadcast services provided by the third cell to the first terminal and the second terminal, and the maximum operating bandwidth of the second terminal is greater than the maximum operating bandwidth of the first terminal.
  • sending the fourth information includes: sending the fourth information to the distributed unit DU.
  • the CU sends the fourth information to the DU, so that the DU can indicate to the terminal device whether the neighboring cell of the third cell provides the second broadcast service to the first terminal.
  • the network device may be a centralized unit CU, which manages the first DU and the second DU, the third cell is a cell managed by the first DU, and the second cell is a cell managed by the second DU.
  • determining the fourth information includes: receiving the eleventh information from the second DU, and determining the fourth information according to the eleventh information; wherein the eleventh information is used to indicate the cell in the cell managed by the second DU that provides the second broadcast service for the first terminal.
  • sending the fourth information includes: sending the fourth information to the first DU.
  • a communication method which can be executed by a first terminal, or by a component of the first terminal, such as a processor, chip, or chip system of the first terminal, or by a logic module or software that can implement all or part of the functions of the first terminal.
  • the method includes: receiving fourth information, the fourth information indicating whether the second cell provides a second broadcast service to the first terminal, and determining whether the second cell provides a second broadcast service to the first terminal based on the fourth information.
  • the first terminal is a reduced capability RedCap terminal and/or an enhanced reduced capability eRedCap terminal
  • the second broadcast service is a broadcast service provided by a third cell
  • the second cell is a neighboring cell of the third cell.
  • the method also includes: if the fourth information indicates that the second cell does not provide the second broadcast service to the first terminal, initiating a unicast reception request, and the unicast reception request is used to request reception of the second broadcast service via unicast.
  • the method also includes: receiving seventh information, the seventh information indicating at least one neighboring cell of the third cell, the neighboring cell providing one or more broadcast services provided by the third cell, at least one neighboring cell including the second cell, and the one or more broadcast services provided by the third cell including the second broadcast service.
  • the neighboring cell provides one or more broadcast services provided by the third cell to the first terminal, or the neighboring cell provides one or more broadcast services provided by the third cell to the first terminal and the second terminal, and the maximum operating bandwidth of the second terminal is greater than the maximum operating bandwidth of the first terminal.
  • the fourth information is carried in a multicast broadcast service control channel MCCH message.
  • a communication method which can be executed by a network device, or by a component of the network device, such as a processor, chip, or chip system of the network device, or by a logic module or software that can implement all or part of the functions of the network device.
  • the method includes: determining fifth information and sending the fifth information.
  • the fifth information includes a first frequency selection area identifier FSAI and a first frequency point corresponding to the first FSAI, and the first frequency point is a frequency point for providing a broadcast service corresponding to the first FSAI to the first terminal.
  • the first terminal includes a reduced capability RedCap terminal and/or an enhanced reduced capability eRedCap terminal.
  • the network device can provide the first terminal with the frequency of the broadcast service corresponding to the FSAI indication, so that the first terminal can set the cell reselection priority of the frequency point to the highest priority, thereby increasing the probability of the first terminal reselecting to the cell on the first frequency point. rate, thereby improving the continuity of the broadcast service when the first terminal is receiving the broadcast service in the current cell, or improving the success rate of receiving the broadcast service when the first terminal is not receiving the broadcast service in the current cell but is interested in or expects to receive the broadcast service.
  • the fifth information also includes a second frequency corresponding to the first FSAI, where the second frequency is a frequency for providing a broadcast service corresponding to the first FSAI to the second terminal, and the maximum working bandwidth of the second terminal is greater than the maximum working bandwidth of the first terminal.
  • the fifth information is carried in the system information of the cell.
  • a communication method which can be executed by a first terminal, or by a component of the first terminal, such as a processor, chip, or chip system of the first terminal, or by a logic module or software that can implement all or part of the functions of the first terminal.
  • the method includes: obtaining sixth information, the sixth information includes a first frequency point, the first frequency point is a frequency point corresponding to a first frequency selection area identifier FSAI, or the first frequency point is a frequency point corresponding to a third broadcast service.
  • the cell reselection priority of the first frequency point is set to the highest priority
  • the third broadcast service is a broadcast service that the first terminal is receiving or interested in
  • the first FSAI is the FSAI corresponding to the third broadcast service
  • the first frequency point is a frequency point that provides the third broadcast service to the first terminal.
  • the first terminal is a reduced capability RedCap terminal and/or an enhanced reduced capability eRedCap terminal.
  • the network device can provide the frequency of the broadcast service to the first terminal in response to the broadcast service indication, so that the first terminal can set the cell reselection priority of the frequency to the highest priority, thereby increasing the probability of the first terminal reselecting to the cell on the first frequency, so that when the first terminal is receiving the broadcast service in the current cell, the continuity of the broadcast service can be improved, or when the first terminal is not receiving the broadcast service in the current cell but is interested in or expects to receive the broadcast service, the reception success rate of the broadcast service can be improved.
  • the sixth information is carried in the system information of the cell; or, the sixth information is located in the user service description USD of the multicast broadcast service MBS.
  • the sixth information further includes a second frequency point, where the second frequency point is a frequency point corresponding to the second FSAI, or the second frequency point is a frequency point corresponding to the third broadcast service.
  • the second FSAI is a FSAI point corresponding to the third broadcast service
  • the second frequency point is a frequency point for providing the third broadcast service to the second terminal
  • the maximum operating bandwidth of the second terminal is greater than the maximum operating bandwidth of the first terminal.
  • a communication device which includes a unit or module, and the unit or module is used to execute any one of the methods described in the first to eighth aspects above.
  • a communication device for implementing various methods.
  • the communication device may be a network device in the first aspect, the third aspect, the fifth aspect, or the seventh aspect, or a device included in the network device, such as a chip or a chip system; or, the communication device may be a terminal in the second aspect, the fourth aspect, the sixth aspect, or the eighth aspect, or a device included in the terminal, such as a chip or a chip system.
  • the communication device includes a module, unit, or means corresponding to the implementation method, and the module, unit, or means may be implemented by hardware, software, or by hardware executing the corresponding software implementation.
  • the hardware or software includes one or more modules or units corresponding to the functions.
  • the communication device may include a processing module and a transceiver module.
  • the processing module may be used to implement the processing function in any of the above aspects and any possible implementations thereof.
  • the transceiver module may include a receiving module and a sending module, respectively used to implement the receiving function and the sending function in any of the above aspects and any possible implementations thereof.
  • the transceiver module may be composed of a transceiver circuit, a transceiver, a transceiver or a communication interface.
  • a communication device comprising: a processor and a memory; the memory is used to store computer instructions, and when the processor executes the instructions, the communication device executes the method described in any aspect.
  • the communication device can be the network device in the first aspect, the third aspect, the fifth aspect, or the seventh aspect, or a device included in the network device, such as a chip or a chip system; or, the communication device can be the terminal in the second aspect, the fourth aspect, the sixth aspect, or the eighth aspect, or a device included in the terminal, such as a chip or a chip system.
  • a communication device comprising: a processor and a communication interface; the communication interface is used to communicate with a module outside the communication device; the processor is used to execute a computer program or instruction so that the communication device executes the method described in any aspect.
  • the communication device can be a network device in the first aspect, the third aspect, the fifth aspect, or the seventh aspect, or a device included in the network device, such as a chip or a chip system; or, the communication device can be a terminal in the second aspect, the fourth aspect, the sixth aspect, or the eighth aspect, or a device included in the terminal, such as a chip or a chip system.
  • a communication device comprising: at least one processor; the processor is used to execute a computer program or instruction stored in a memory, so that the communication device performs the method described in any aspect.
  • the memory can be coupled to the processor, or can be independent of the processor.
  • the communication device can be the network device of the first aspect, the third aspect, the fifth aspect, or the seventh aspect, or a device included in the network device, such as a chip or a chip system; or the communication device can be the second aspect, the fourth aspect, the sixth aspect, or the seventh aspect.
  • the terminal in the eighth aspect, or the device included in the terminal such as a chip or a chip system.
  • a computer-readable storage medium in which a computer program or instruction is stored, and when the computer-readable storage medium is run on a communication device, the communication device can execute the method described in any one of the aspects.
  • a computer program product comprising instructions, which, when executed on a communication device, enables the communication device to execute the method described in any one of the aspects.
  • a communication device for example, the communication device may be a chip or a chip system
  • the communication device includes a processor for implementing the functions involved in any aspect.
  • the communication device includes a memory for storing necessary program instructions and data.
  • the device when it is a chip system, it can be composed of a chip or include a chip and other discrete devices.
  • the communication device provided in any one of the ninth to sixteenth aspects is a chip
  • the sending action/function of the communication device can be understood as output information
  • the receiving action/function of the communication device can be understood as input information
  • the technical effects brought about by any design method in the ninth aspect to the sixteenth aspect can refer to the technical effects brought about by different design methods in the first aspect to the eighth aspect, and will not be repeated here.
  • FIG1 is a schematic diagram of the structure of a communication system provided by the present application.
  • FIG2 is a schematic diagram of the structure of a communication device provided by the present application.
  • FIG3 is a schematic diagram of a transmission path of an MBS service provided by the present application.
  • FIG4 is a schematic diagram of a transmission method of a multicast service provided by the present application.
  • FIG5 is a schematic diagram of a receiving process of a broadcast service provided by the present application.
  • FIG6 is a schematic diagram of a transmission method of a broadcast service provided by the present application.
  • FIG7 is a flow chart of a communication method provided by the present application.
  • FIG8 is a schematic diagram of a configuration of MCCH and CFR provided by the present application.
  • FIG9 is a schematic diagram of another configuration of MCCH and CFR provided by the present application.
  • FIG10 is a flow chart of another communication method provided by the present application.
  • FIG11 is a schematic diagram of another configuration of MCCH and CFR provided by the present application.
  • FIG12 is a flow chart of another communication method provided by the present application.
  • FIG13 is a flow chart of another communication method provided by the present application.
  • FIG14 is a flow chart of another communication method provided by the present application.
  • FIG15 is a schematic diagram of the structure of a network device provided by the present application.
  • FIG16 is a schematic diagram of the structure of a terminal provided by the present application.
  • FIG17 is a schematic diagram of the structure of another communication device provided by the present application.
  • FIG18 is a schematic diagram of a CU-DU separation architecture provided by the present application.
  • FIG19 is a flow chart of a communication method provided by the present application.
  • FIGS 20 and 21 are flowchart diagrams of the communication method provided in this application.
  • plural means two or more than two.
  • At least one of the following or similar expressions refers to any combination of these items, including any combination of single items or plural items.
  • at least one of a, b, or c can mean: a, b, c, a-b, a-c, b-c, or a-b-c, where a, b, and c can be single or multiple.
  • words such as “first” and “second” are used to distinguish the same or similar items with substantially the same functions and effects.
  • words such as “first” and “second” do not limit the quantity and execution order, and words such as “first” and “second” do not necessarily limit them to be different.
  • the words “exemplary” or “for example” are used to indicate examples, illustrations or descriptions. Any embodiment or design scheme described as “exemplary” or “for example” in the embodiments of the present application should not be interpreted as being more preferred than other embodiments or designs. Specifically, the use of words such as “exemplary” or “for example” is intended to present the relevant concepts in a specific manner to facilitate understanding.
  • the technical solution provided in the present application can be used in various communication systems, which can be a 3rd generation partnership project (3GPP) communication system, for example, a 4th generation (4G) long term evolution (LTE) system, a 5th generation (5G) new radio (NR) system, a vehicle to everything (V2X) system, a system of LTE and NR hybrid networking, or a device-to-device (D2D) system, a machine-to-machine (M2M) communication system, an Internet of Things (IoT), and other next generation communication systems.
  • 3GPP 3rd generation partnership project
  • 4G 4th generation
  • LTE long term evolution
  • 5G new radio
  • V2X vehicle to everything
  • D2D device-to-device
  • M2M machine-to-machine
  • IoT Internet of Things
  • the communication system can also be a non-3GPP communication system without limitation.
  • the above-mentioned communication system applicable to the present application is only an example, and the communication system applicable to the present application is not limited to this. It is uniformly explained here and will not be repeated below.
  • an exemplary communication system provided by the present application is shown, which includes at least one network device (such as 110a and 110b in Fig. 1) and at least one terminal (such as 120a-120j in Fig. 1).
  • terminals and network devices may communicate with each other in a wired or wireless manner.
  • FIG1 is only a schematic diagram, and the communication system may also include other network devices, such as wireless relay devices, wireless backhaul devices, core network devices, etc., which are not shown in FIG1.
  • the number of network devices and terminals in FIG1 is only an example, and the communication system may include more or fewer network devices or terminals than those shown in FIG1.
  • At least one terminal in the communication system includes a first terminal.
  • a second terminal may be included.
  • the maximum operating bandwidth of the first terminal is less than the maximum operating bandwidth of the second terminal, or the maximum operating bandwidth of the second terminal is greater than the maximum operating bandwidth of the first terminal, or the second terminal device is a normal terminal or a non-capability-reduced terminal or a normal terminal.
  • the first terminal belongs to the first type of terminal
  • the second terminal belongs to the second type of terminal.
  • the features of the first terminal in the following embodiments of the present application can also be understood as the features of the first type of terminal.
  • the features of the second terminal can also be understood as the features of the second type of terminal.
  • the first type of terminal may include a reduced capability (RedCap) terminal and/or an enhanced RedCap (eRedCap) terminal.
  • the second type of terminal may be an enhanced mobile broadband (eMBB) terminal.
  • the eRedCap terminal may refer to a terminal that satisfies at least one of the following:
  • the baseband bandwidth for the physical downlink shared channel (PDSCH) and physical uplink shared channel (PUSCH) is only supported at 5 megahertz (MHz).
  • the radio frequency (RF) bandwidth for uplink (UL) and downlink (DL) is 20MHz.
  • a RedCap terminal may refer to a terminal that satisfies at least one of the following:
  • the maximum bandwidth of the RedCap terminal in frequency range 1 (frequency range 1, FR1) is 20 MHz, and the maximum bandwidth in frequency range 2 (frequency range 2, FR2) is 100 MHz.
  • the number of receiving antennas is reduced to 1 or 2, that is, the number of receiving antennas of the RedCap terminal is 1 or 2.
  • the modulation order is reduced from FR1256 quadrature amplitude modulation (QAM) to FR1 64QAM.
  • RedCap terminal and eRedCap terminal may have other names.
  • RedCap terminal may also be called Rel-17 terminal or Rel-17 RedCap terminal or NR light terminal;
  • eRedCap terminal may also be called Rel-18 terminal or Rel-18 RedCap terminal. This application does not specifically limit the names of RedCap terminal and eRedCap terminal.
  • the first category of terminals may also include other terminals, such as long range radio (LoRa) terminals, narrowband Internet of things (NB-IoT) terminals, Weightless terminals, Sigfox terminals, etc.
  • LoRa long range radio
  • NB-IoT narrowband Internet of things
  • Weightless terminals Sigfox terminals, etc.
  • a terminal may refer to a user-side device with wireless transceiver functions.
  • a terminal may also be referred to as user equipment (UE), terminal equipment, access terminal, user unit, user station, mobile station (MS), remote station, remote terminal, mobile terminal (MT), user terminal, wireless communication equipment, user agent or user device, etc.
  • the terminal may be, for example, a terminal in IoT, V2X, D2D, M2M, 5G network, or a future evolved public land mobile network (PLMN).
  • the terminal may be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; it may also be deployed on the water (such as ships, etc.); it may also be deployed in the air (such as airplanes, balloons and satellites, etc.).
  • the terminal may be a drone, an IoT device (e.g., a sensor, an electric meter, a water meter, etc.), a V2X device, a station (ST) in a wireless local area network (WLAN), a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA) device, a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device (also referred to as a wearable smart device), a tablet computer or a computer with wireless transceiver function, a virtual reality device, or a wearable device.
  • IoT device e.g., a sensor, an electric meter, a water meter, etc.
  • V2X device e.g., a V2X device
  • ST wireless local area network
  • WLAN wireless local area network
  • SIP session initiation
  • the invention relates to wireless terminals in the fields of artificial intelligence (AI), artificial intelligence (AI), information technology (AI), information technology (ID), information technology (I), information technology (I) and information technology (I) of the present invention.
  • the invention relates to wireless terminals in the fields of artificial intelligence (AI), artificial intelligence ...
  • the network device is a device that accesses a terminal to a wireless network, and may be an evolutionary Node B (eNB or eNodeB) in an LTE or evolved LTE system (LTE-Advanced, LTE-A), such as a traditional macro base station eNB and a micro base station eNB in a heterogeneous network scenario; or it may be a next generation node B (gNodeB or gNB) in a 5G system; or it may be a transmission reception point (TRP); or it may be a base station in a future evolved PLMN; or it may be a broadband network service gateway (BNG), an aggregation switch or a non-3GPP access device; or it may be a wireless controller in a cloud radio access network (CRAN); or it may be an access point (AP) in a WiFi system; or it may be a wireless relay node or a wireless backhaul node; or it may be a device that implements base station functions in IoT, V
  • the network device may also be a module or unit that can implement part or all of the functions of the base station.
  • the network device may be a centralized unit (CU), a distributed unit (DU), CU and DU, CU-control plane (CP), CU-user plane (UP), or a radio unit (RU).
  • the CU and DU may be separately configured or may be included in the same network element, such as a baseband unit (BBU).
  • BBU baseband unit
  • the RU may be included in a radio device or radio unit, such as a remote radio unit (RRU), an active antenna unit (AAU), or a remote radio head (RRH).
  • RRU remote radio unit
  • AAU active antenna unit
  • RRH remote radio head
  • the network device may include a CU and at least one DU.
  • the CU may include a CU-CP and at least one CU-UP.
  • the CU and the DU communicate via the F1 interface.
  • the CU-CP and the DU communicate via the F1-C interface
  • the CU-UP and the DU communicate via the F1-U interface.
  • the CU-CP and the CU-UP communicate via the E1 interface.
  • the network device may be a network device or a module of a network device in an open radio access network (open RAN, ORAN) system.
  • ORAN open radio access network
  • CU may also be referred to as open (open, O)-CU
  • DU may also be referred to as O-DU
  • CU-CP may also be referred to as O-CU-CP
  • CU-UP may also be referred to as O-CU-UP
  • RU may also be referred to as O-RU.
  • the CU (or CU-CP, Any unit among CU-UP), DU and RU can be implemented by a software module, a hardware module, or a combination of a software module and a hardware module.
  • the communication system described in the embodiment of the present application is for the purpose of more clearly illustrating the technical solution of the embodiment of the present application, and does not constitute a limitation on the technical solution provided in the embodiment of the present application.
  • a person of ordinary skill in the art can know that with the evolution of network architecture and the emergence of new business scenarios, the technical solution provided in the embodiment of the present application is also applicable to similar technical problems.
  • Figure 2 is a schematic diagram of the composition of a communication device 200 provided by the present application, and the communication device 200 can be a terminal or a chip or system on chip in the terminal; or, it can be a network device or a module or chip or system on chip in the network device.
  • the communication device 200 includes at least one processor 201 and at least one communication interface (FIG. 2 is merely an example of a communication interface 204 and a processor 201).
  • the communication device 200 may further include a communication bus 202 and a memory 203.
  • the processor 201 may be a general-purpose central processing unit (CPU), a general-purpose processor, a network processor (NP), a digital signal processor (DSP), a microprocessor, a microcontroller, a programmable logic device (PLD), or any combination thereof.
  • the processor 201 may also be other devices with processing functions, such as circuits, devices, or software modules, without limitation.
  • the communication bus 202 is used to connect different components in the communication device 200 so that the different components can communicate.
  • the communication bus 202 can be a peripheral component interconnect (PCI) bus or an extended industry standard architecture (EISA) bus.
  • PCI peripheral component interconnect
  • EISA extended industry standard architecture
  • the bus can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, only one thick line is used in FIG. 2, but it does not mean that there is only one bus or one type of bus.
  • the communication interface 204 is used to communicate with other devices or communication networks.
  • the communication interface 204 can be a module, a circuit, a transceiver, or any device capable of implementing communication.
  • the communication interface 204 can also be an input/output interface located in the processor 201 to implement signal input and signal output of the processor.
  • the memory 203 may be a device with a storage function, and is used to store instructions and/or data, wherein the instructions may be computer programs.
  • the memory 203 may be a read-only memory (ROM) or other types of static storage devices that can store static information and/or instructions, or a random access memory (RAM) or other types of dynamic storage devices that can store information and/or instructions, or an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM) or other optical disc storage, optical disc storage (including compressed optical disc, laser disc, optical disc, digital versatile disc, Blu-ray disc, etc.), magnetic disk storage media or other magnetic storage devices, etc., without limitation.
  • ROM read-only memory
  • RAM random access memory
  • EEPROM electrically erasable programmable read-only memory
  • CD-ROM compact disc read-only memory
  • CD-ROM compact disc read-only memory
  • optical disc storage including compressed optical disc, laser disc, optical disc, digital versatile disc, Blu-ray disc, etc.
  • magnetic disk storage media or other magnetic storage devices etc., without limitation.
  • the memory 203 can exist independently of the processor 201, or can be integrated with the processor 201.
  • the memory 203 can be located inside the communication device 200, or can be located outside the communication device 200, without limitation.
  • the processor 201 can be used to execute instructions stored in the memory 203 to implement the method provided in the following embodiments of the present application.
  • the communication device 200 may further include an output device 205 and an input device 206.
  • the output device 205 communicates with the processor 201 and may display information in a variety of ways.
  • the output device 205 may be a liquid crystal display (LCD), a light emitting diode (LED) display device, a cathode ray tube (CRT) display device, or a projector.
  • the input device 206 communicates with the processor 201 and may receive user input in a variety of ways.
  • the input device 206 may be a mouse, a keyboard, a touch screen device, or a sensor device.
  • the structure shown in FIG. 2 does not constitute a specific limitation on the network device or terminal.
  • the network device or terminal may include more or fewer components than shown in the figure, or combine certain components, or split certain components, or arrange the components differently.
  • the components shown in the figure may be implemented in hardware, software, or a combination of software and hardware.
  • Multicast and broadcast service (MBS):
  • Multicast and broadcast service is a service for multiple terminals. From the perspective of end-to-end management and control process, MBS services can be divided into multicast services and broadcast services. Common MBS services include live broadcast services, public safety services, batch software update services, etc. As shown in Figure 3, the transmission path of MBS services can be: data server (or MBS server) ⁇ core network equipment ⁇ base station ⁇ multiple terminals.
  • the service data is transmitted through an MBS session, which includes at least one MBS quality of service (QoS) flow.
  • QoS quality of service
  • the service data is transmitted through an MBS radio bearer (MRB).
  • MRB MBS radio bearer
  • PTM point to multi-point
  • PTP point to point
  • Multicast service 1a.
  • the quality of service (QoS) requirements of multicast services are usually high, and multicast services can achieve the same QoS level as unicast services.
  • group management and other operations can be performed on multicast services.
  • the core network device can manage the terminal to join or leave the multicast service group, and the base station and the core network device can maintain the information of the terminals in the multicast service group.
  • the multicast service is transmitted through the MBS session, and the MBS session includes the MBS QoS flow (or multicast QoS flow).
  • the MBS session can be associated with the PDU session of the terminal, and the MBS QoS flow is associated with the unicast QoS flow in the PDU session.
  • the core network device can control the state of the MBS session to be activated or deactivated, and the terminal does not perceive the state of the MBS session.
  • the base station When the base station sends multicast services to the terminal, it can use the PTM or PTP transmission mode.
  • the multicast service data In the PTM mode, the multicast service data can be scrambled with the group radio network temporary identifier (G-RNTI); in the PTP mode, the multicast service data is scrambled with the cell radio network temporary identifier (C-RNTI).
  • the base station can control the transmission mode to dynamically switch between PTM and PTP.
  • broadcast services have lower QoS requirements and belong to best effort QoS.
  • Core network equipment and base stations do not need to maintain a terminal group that receives broadcast services.
  • the terminals receive them autonomously according to the configuration information.
  • the base station sends broadcast services to the terminals, it only supports PTM transmission mode.
  • Broadcast services can be provided to terminals in any radio resource control (RRC) state.
  • RRC radio resource control
  • MBS control channel MCCH
  • MTCH MBS traffic channel
  • MCCH is used to transmit control information
  • a message containing the control information can be called an MCCH message
  • the control information can include the configuration information of MTCH
  • MTCH is used to transmit data of broadcast services
  • a message containing broadcast service data can be called an MTCH message.
  • MCCH messages and broadcast services are carried in PDSCH.
  • the PDSCH carrying MCCH messages can be called the PDSCH corresponding to the MCCH messages, and the PDSCH carrying broadcast services can be called the PDSCH corresponding to the broadcast services.
  • SIB20 may include MCCH configuration information (located in the cell mcch-Config) and common frequency resources (CFR) (located in the cell cfr-ConfigMCCH-MTCH).
  • SIB20 may include MCCH configuration information (located in the cell mcch-Config) and common frequency resources (CFR) (located in the cell cfr-ConfigMCCH-MTCH).
  • the configuration information of MCCH may include the repetition period (RP), offset (mcch-Offset), transmission time (mcch-duration), modification period (MP), etc. of MCCH.
  • the cfr-ConfigMCCH-MTCH information element may include the LocationAndBandwidthBroadcast information element, which is used to configure CFR.
  • CFR is a continuous frequency domain resource, which can be defined by a starting position and a bandwidth size.
  • CFR is used to transmit MBS services.
  • CFR can be: control resource set (CORESET) 0 (i.e., CORESET0), SIB1 configured bandwidth (such as initial part bandwidth (bandwidth part, BWP)), or a separately configured bandwidth larger than the SIB1 configured bandwidth.
  • CORESET control resource set
  • SIB1 configured bandwidth such as initial part bandwidth (bandwidth part, BWP)
  • BWP bandwidth part bandwidth
  • CFR may also have other names, such as BWP, broadcast BWP, or multicast BWP.
  • BWP broadcast BWP
  • multicast BWP multicast BWP
  • CFR can be understood as the frequency range where the PDSCH corresponding to the MCCH message and the PDSCH corresponding to the broadcast service are located.
  • the specific frequency domain position of the PDSCH is scheduled by the downlink control information (DCI) in the physical downlink control channel (PDCCH).
  • DCI downlink control information
  • the configuration information of MTCH in the MCCH message can be based on the granularity of broadcast services, that is, the configuration of MTCH is per service level.
  • Each broadcast service can be associated with a G-RNTI.
  • Broadcast services can be identified by temporary multicast group identifier (TMGI), that is, TMGI can be understood as the identifier of broadcast services.
  • TMGI temporary multicast group identifier
  • the configuration information of MTCH may include G-RNTI, discontinuous reception (DRX) parameters, TMGI, physical downlink shared channel (PDSCH) configuration corresponding to MTCH, etc.
  • G-RNTI discontinuous reception (DRX) parameters
  • DRX discontinuous reception
  • TMGI physical downlink shared channel
  • PDSCH physical downlink shared channel
  • the process of receiving broadcast services by the terminal can be shown in Figure 5.
  • the terminal first receives the SIB and obtains the configuration information of the MCCH from the SIB.
  • the MCCH message is received according to the configuration information of the MCCH, and the content of the MCCH message is read to obtain the configuration information of the MTCH carried by the MCCH.
  • the data of the broadcast service is received according to the configuration information of the MTCH.
  • the transmission process of the broadcast service from the MBS server to the terminal is shown.
  • the MBS server can send information to the core network device to indicate the start of the broadcast session.
  • the core network device indicates the start of the broadcast session to the base station.
  • the base station After receiving the indication, the base station sends a response to the core network device and sends the configuration information of the MTCH through the MCCH.
  • the broadcast service 1 and The data of broadcast service 2 is sent from the MBS server to the core network device, and then from the core network device to the base station.
  • the base station sends the data of broadcast service 1 and broadcast service 2 to the terminal through MTCH 1 and MTCH 2 respectively.
  • the configuration information of MTCH may also include a neighboring service indication, which indicates whether the neighboring cell of the current cell provides a corresponding broadcast service, wherein the corresponding broadcast service refers to the broadcast service associated with the G-RNTI in the configuration information of MTCH.
  • the configuration information of MTCH may include a bit string (or bit map or bit sequence).
  • Each bit of the bit string may correspond to a neighboring cell, and the value of a certain bit may indicate whether the neighboring cell corresponding to the bit provides a corresponding broadcast service. For example, if the value of the bit is 1, it means that the neighboring cell corresponding to the bit provides a corresponding broadcast service, and if the value is 0, it means that the neighboring cell corresponding to the bit does not provide a corresponding broadcast service.
  • the configuration information of the MTCH may be carried in an MBS-SessionInfo information element, which may include the following information:
  • the terminal For the terminal, if the configuration information of MTCH indicates that a certain neighboring cell provides a broadcast service that the terminal is receiving or interested in, then the terminal can receive the broadcast service after moving or reselecting to the cell. If the configuration information of MTCH indicates that a certain neighboring cell does not provide a broadcast service that the terminal is receiving or interested in, then the terminal can trigger the establishment of a unicast session before/after moving or reselecting to the cell to receive the broadcast service.
  • the network device can also configure the MBS broadcast neighbor cell list (MBS Broadcast Neighbour Cell List) at the cell granularity.
  • MBS broadcast neighbor cell list indicates the neighbor cells that provide one or more broadcast services provided by the cell through broadcast MRB.
  • the first cell in the MBS broadcast neighbor cell list is the neighbor cell corresponding to the first bit in mtch-NeighbourCell
  • the second cell is the neighbor cell corresponding to the second cell in mtch-NeighbourCell, and so on.
  • the MBS broadcast neighbor cell list can indicate which neighbor cells can provide one or more broadcast services provided by the cell, and the specific broadcast service provided by each neighbor cell can be indicated by the mtch-NeighbourCell information element.
  • the CU can send the MBS broadcast neighbor list and neighbor service indication to the DU, and then the DU sends the MBS broadcast neighbor list and neighbor service indication to the terminal through the MCCH message (such as the MBS broadcast configuration (MBSBroadcastConfiguration) message).
  • MBSBroadcastConfiguration MBS broadcast configuration
  • the CU may send the MBS broadcast neighbor list to the DU via at least one of the following messages: an F1 setup response (F1 SETUP RESPONSE) message, a DU configuration update confirmation (DU CONFIGURATION UPDATE ACKNOWLEDGE) message, or a CU configuration update (CU CONFIGURATION UPDATE) message.
  • F1 setup response F1 SETUP RESPONSE
  • DU configuration update confirmation DU CONFIGURATION UPDATE ACKNOWLEDGE
  • CU configuration update CU CONFIGURATION UPDATE
  • the CU can send a neighbor cell service indication (mtch-NeighbourCell) to the DU through at least one of the following messages: a broadcast context establishment request (BROADCAST CONTEXT SETUP REQUEST) message or a broadcast context change request (BROADCAST CONTEXT MODIFICATION REQUEST) message.
  • a broadcast context establishment request BROADCAST CONTEXT SETUP REQUEST
  • BROADCAST CONTEXT MODIFICATION REQUEST broadcast context change request
  • the cells in the MBS broadcast neighbor list configured by the network device are not restricted to provide one or more broadcast services provided by the cell.
  • the cells in the list may not provide any broadcast services, or may not provide one or more broadcast services provided by the cell.
  • the list may also have other names, such as neighbor list, which is not restricted.
  • the application function network element may provide an MBS user service description (USD).
  • the MBS USD may include at least one of an MBS session identifier, a TMGI, a frequency selection area identifier (FSAI), or frequency information.
  • FSAI frequency selection area identifier
  • the cell may provide SIB21, which may include at least one FSAI, or may include at least one FSAI and its corresponding frequency point. Of course, the cell may not provide SIB21.
  • frequency point A the priority of certain frequency points (hereinafter referred to as frequency point A for convenience of description) is set to the highest priority:
  • the SIB1 scheduling information of the cell on frequency point A includes SIB20.
  • the current service cell does not provide SIB21, and the MBS USD of the terminal includes the frequency A corresponding to the service (i.e. the service that the terminal expects to receive or is receiving).
  • the current serving cell provides SIB21, but SIB21 does not provide a mapping relationship of the frequency corresponding to the service, and the MBS USD of the terminal includes the frequency point A corresponding to the service.
  • the service refers to the service that the terminal expects to receive or is receiving.
  • the above is a relevant introduction to the MBS service.
  • the above solution is designed for ordinary terminals.
  • the first terminal such as a RedCap terminal or an eRedCap terminal
  • the current transmission configuration of the MBS service may no longer be applicable.
  • the present application provides a communication method, which, in a scenario where a first terminal, such as a RedCap terminal or an eRedCap terminal, is introduced, can enable the first terminal to receive broadcast services as much as possible, thereby improving the user experience of the first terminal user.
  • a first terminal such as a RedCap terminal or an eRedCap terminal
  • the network device or terminal can perform some or all of the steps in the embodiment of the present application, and these steps or operations are only examples.
  • the embodiment of the present application can also perform other operations or variations of various operations.
  • each step can be performed in a different order presented in the embodiment of the present application, and it is possible not to perform all the operations in the embodiment of the present application.
  • first terminal in the embodiments of the present application are all applicable to the first category of terminals, that is, the first terminal in the following embodiments of the present application can be replaced by the first category of terminals.
  • a communication method is provided in an embodiment of the present application, and the communication method includes the following steps:
  • a network device determines first information.
  • the first cell belongs to the network device, or the network device is the network device to which the first cell belongs, or the network device manages the first cell.
  • the first cell may be a serving cell or a resident cell of a first terminal.
  • the first information indicates whether the first cell supports providing a broadcast service to the first terminal, and the broadcast service may not be limited to a specific broadcast service.
  • the broadcast service here may be a general broadcast service, such as any broadcast service provided by the first cell, or all broadcast services provided by the first cell.
  • the broadcast service may also be one or some specific broadcast services, which will be explained in subsequent embodiments through the implementation of the first information and will not be described in detail here.
  • whether the first cell supports providing broadcast services to the first terminal can also be understood as: whether the broadcast service provided by the first cell supports reception by the first terminal, or whether the first terminal is able to receive the broadcast service provided by the first cell, or whether the first cell provides broadcast services to the first terminal, or whether the first cell is providing broadcast services to the first terminal, or whether the first cell provides scheduling of broadcast services to the first terminal, or whether the first cell provides information for configuring the broadcast service to the first terminal, or whether the first cell provides scheduling of information for configuring the broadcast service to the first terminal, or whether the first cell provides MCCH messages to the first terminal, or whether the first cell provides scheduling of MCCH messages to the first terminal.
  • whether the first terminal device is supported to receive can also be understood as: whether the first terminal device is supported to receive by (or using) broadcasting. Whether the first terminal can receive can also be understood as: whether the first terminal can receive by broadcasting.
  • the first information may be carried in the MCCH message. That is, the network device sending the first information may include: the network device sending The MCCH message includes the first information.
  • the first terminal receiving the first information may include: the first terminal receiving the MCCH message includes the first information.
  • the first information may be carried in the system information of the first cell. That is, the network device sending the first information may include: the network device sending the system information of the first cell, the system information including the first information.
  • the first terminal receiving the first information may include: the first terminal receiving the system information of the first cell, the system information including the first information.
  • the system information may be SIB1, SIB20, or SIB21.
  • the first information may be carried in an RRC reconfiguration message. That is, the network device sending the first information may include: the network device sending an RRC reconfiguration message, where the RRC reconfiguration message includes the first information.
  • information is carried in an MCCH message, which can also be understood as: information is carried in MCCH, and the two can replace each other, and the present application does not make specific limitations on this.
  • the first terminal determines, according to the first information, whether it can receive a broadcast service provided by the first cell in a broadcast manner.
  • the first terminal may determine, based on the first information, that it is possible to receive the broadcast services provided by the first cell by broadcast.
  • the first terminal may determine, based on the first information, that it is impossible to receive the broadcast services provided by the first cell by broadcast.
  • the first terminal when the first terminal is capable of receiving a broadcast service provided by the first cell in a broadcast manner, the first terminal may receive configuration information of the broadcast service, and receive the broadcast service provided by the first cell in a broadcast manner according to the configuration information.
  • the first terminal can establish a unicast connection with the network device and receive the broadcast service provided by the first cell by unicast.
  • the first terminal can trigger cell reselection, that is, the cell reselection is triggered when the first terminal cannot receive the broadcast service provided by the first cell by broadcasting.
  • the triggering condition can be the cell reselection triggering condition defined by the current 3GPP standard
  • the network device sends the first information to indicate whether the first cell supports providing broadcast services to the first terminal, so that the first terminal can learn whether it can receive the broadcast services provided by the first cell by broadcasting according to the first information. If the first cell supports providing broadcast services to the first terminal, the first terminal can receive the broadcast services provided by the first cell by broadcasting. If the first cell does not support providing broadcast services to the first terminal, the first terminal cannot receive the broadcast services provided by the first cell by broadcasting.
  • the first terminal can learn whether it can receive the broadcast services provided by the first cell by broadcasting, when the first terminal learns that it cannot receive the broadcast services provided by the first cell by broadcasting, the first terminal can take measures (such as initiating a unicast connection request) to receive the broadcast services provided by the first cell as much as possible, thereby improving the coverage of the broadcast services and improving the user experience of the first terminal user.
  • measures such as initiating a unicast connection request
  • the network device may send first information to the RedCap terminals and the eRedCap terminals respectively.
  • the indications of the first information sent to the RedCap terminals and the eRedCap terminals respectively may be the same or different.
  • the first information for the RedCap terminal indicates that the first cell supports the provision of broadcast services to the RedCap terminal, and the first information for the eRedCap terminal indicates that the first cell does not support the provision of broadcast services to the eRedCap terminal; or, the first information for the RedCap terminal indicates that the first cell does not support the provision of broadcast services to the RedCap terminal, and the first information for the eRedCap terminal indicates that the first cell supports the provision of broadcast services to the eRedCap terminal.
  • the network device can send the same first information to the RedCap terminals and the eRedCap terminals.
  • the first cell provides broadcast services to the RedCap terminals and the eRedCap terminals in the same manner, such as the first cell supports the provision of broadcast services to the RedCap terminals and the eRedCap terminals, or the first cell does not support the provision of broadcast services to the RedCap terminals and the eRedCap terminals.
  • the first information indicates whether the first cell supports providing a broadcast service to the first terminal.
  • the first information indicates whether the first cell supports providing a broadcast service to the first terminal.
  • the first information indicates that the first cell supports at least one broadcast service provided to the first terminal, and/or the first information indicates that the first cell does not support at least one broadcast service provided to the first terminal.
  • the broadcast services provided by the first cell include broadcast service 1, broadcast service 2, and broadcast service 3.
  • the first information may indicate that the first cell supports providing broadcast service 1 and/or broadcast service 2 to the first terminal, and/or the first information may indicate that the first cell does not support broadcast service 3 provided to the first terminal.
  • the first information may be carried in the MCCH message.
  • the MCCH message may include configuration information of the MTCH with a broadcast service as the granularity.
  • the first information may be carried in the configuration information of the MTCH or may be located outside the configuration information of the MTCH, and this application does not specifically limit this.
  • the first information may be implemented by a bit map (or bit string), such as a network device may
  • the MCCH message carries a bit map.
  • the bit map includes X bits, each bit corresponds to a broadcast service provided by the first cell, and the value of a certain bit can indicate whether the first cell supports providing the broadcast service corresponding to the bit to the first terminal. For example, when the value of a certain bit is a first value, it indicates that the first cell supports providing the broadcast service corresponding to the bit to the first terminal; when the value of a certain bit is a second value, it indicates that the first cell does not support providing the broadcast service corresponding to the bit to the first terminal.
  • the first value can be 1, and correspondingly, the second value can be 0; or, the first value can be 0, and correspondingly, the second value can be 1.
  • the first information may be implemented through an enumeration value, such as the MCCH message may include X enumeration fields, each enumeration field corresponds to a broadcast service provided by the first cell, and when a certain enumeration field is set to "true” or “allowed” or “support”, it indicates that the first cell supports providing the broadcast service corresponding to the field to the first terminal. When a certain enumeration field is set to "false” or “notAllowed” or “notSupport", it indicates that the first cell does not support providing the broadcast service corresponding to the field to the first terminal.
  • the X enumeration fields may be located outside the configuration information of the MTCH, or may be located respectively in the MTCH configuration information of the X broadcast services provided by the first cell, which is not specifically limited in the embodiments of the present application.
  • the network device may include enumeration field #1 in the MTCH configuration information corresponding to broadcast service 1, include enumeration field #2 in the MTCH configuration information corresponding to broadcast service 2, and include enumeration field #3 in the MTCH configuration information corresponding to broadcast service 3.
  • enumeration field #1, enumeration field #2, and enumeration field #3 respectively indicate whether the first cell supports providing broadcast service 1, broadcast service 2, and broadcast service 3 to the first terminal.
  • the network device may perform MCCH configuration and/or CFR configuration for the first terminal and the second terminal respectively.
  • the system message of the first cell may include the following information:
  • mcch-Config# is used to configure MCCH for the second terminal
  • cfr-ConfigMCCH-MTCH# is used to configure CFR for the second terminal
  • mcch-ConfigRedCap# is used to configure MCCH for the first terminal
  • cfr-ConfigMCCH-MTCH-RedCap# is used to configure CFR for the first terminal
  • the CFR configured by the network device for the second terminal may be greater than the CFR configured for the first terminal.
  • the CFR corresponding to the second terminal may include the CFR corresponding to the first terminal (denoted as CFR1).
  • the network device may also configure CORESET in the CFR, such as configuring CORESET#2 in the CFR corresponding to the second terminal and configuring CORESET#1 in the CFR corresponding to the first terminal.
  • the network device may send DCI1 and DCI2 to the first terminal and the second terminal respectively, and DCI1 and DCI2 are used to schedule MCCH on the same PDSCH resource, that is, the first terminal and the second terminal may receive the same MCCH message on the same PDSCH resource.
  • the MCCH message may include the above-mentioned first information.
  • the MCCH message may also include MTCH configuration information corresponding to at least one broadcast service (also referred to as configuration information of the broadcast service).
  • the MCCH message may include configuration information of broadcast service 1, broadcast service 2, and broadcast service 3.
  • broadcast service 1, broadcast service 2, and broadcast service 3 are identified by TMGI1, TMGI2, and TMGI3, respectively.
  • the network device may schedule the broadcast service on the same PDSCH resource for the first terminal and the second terminal, or may schedule the broadcast service on different PDSCH resources for the first terminal and the second terminal respectively.
  • the network device can schedule broadcast service 1 on different PDSCH resources for the first terminal and the second terminal respectively (represented by MTCH1 and MTCH2 in FIG8 , respectively), and schedule broadcast service 2 for the first terminal and the second terminal on the same PDSCH resource (represented by MTCH1 in FIG8 ).
  • the network device schedules broadcast service 3 for the second terminal in a wider frequency domain resource/CORESET#2.
  • a network device may provide two sets of configuration information of the broadcast service, one for the first terminal and the other for the second terminal to receive the broadcast service. At this time, the network device may schedule the broadcast service on different PDSCH resources, or may use different configurations to schedule the broadcast service on the same PDSCH resource.
  • the network device may provide a set of configurations for the broadcast service, and both the first terminal and the second terminal may use the set of configurations to receive the broadcast service, that is, the network device may use the same configuration to schedule the broadcast service on the same PDSCH resource.
  • the first information indicates that the first cell supports providing the broadcast service to the first terminal.
  • the first information indicates that the first cell supports providing the broadcast service to the first terminal.
  • the first information indicates that the first cell supports providing broadcast services to the first terminal.
  • the first information indicates that the first cell supports providing broadcast services to the first terminal.
  • the first information may be carried in the system information of the first cell, or in other words, the first information is carried in the system information of the first cell.
  • the first information may explicitly indicate whether the first cell supports providing a broadcast service to the first terminal.
  • the first information may be implemented by 1 bit, and when the value of the bit is a first value, it indicates that the first information indicates that the first cell supports providing a broadcast service to the first terminal, and when the value of the bit is a second value, it indicates that the first information indicates that the first cell does not support providing a broadcast service to the first terminal.
  • the first information may be implemented by an enumeration value, such as when the field where the first information is located is set to "true”, it indicates that the first information indicates that the first cell supports providing broadcast services to the first terminal. When the field is set to "false”, it indicates that the first information indicates that the first cell does not support providing broadcast services to the first terminal.
  • the first information may implicitly indicate whether the first cell supports providing broadcast services to the first terminal.
  • the first information may be the size of the CFR configured by the network device. When the CFR is greater than the maximum operating bandwidth of the first terminal, the first information indicates that the first cell does not support providing broadcast services to the first terminal; when the CFR is less than or equal to the maximum operating bandwidth of the first terminal, the first information indicates that the first cell supports providing broadcast services to the first terminal.
  • the network device may further send second information, and correspondingly, the first terminal receives the second information.
  • the second information indicates that the first cell supports at least one broadcast service provided to the first terminal (or the first type of terminal), and/or the first cell does not support at least one broadcast service provided to the first terminal (or the first type of terminal).
  • the second information may be carried in the MCCH message.
  • the implementation of the second information may refer to the implementation of the first information in the first possible implementation manner, which will not be described in detail here.
  • the network device may send the second information when the first information indicates that the first cell supports providing the broadcast service to the first terminal.
  • the first information indicates that the first cell supports providing broadcast services to the first terminal. If the first information indicates that the first cell does not support providing broadcast services to the first terminal, that is, the first cell does not support providing broadcast services to the first terminal, or not all broadcast services provided by the first cell support providing to the first terminal, the network device may send second information.
  • the first information indicates that the first cell supports providing all broadcast services of the first cell to the first terminal only when the first cell supports providing all broadcast services of the first cell to the first terminal. If the first information indicates that the first cell supports providing broadcast services to the first terminal, the network device may send the second information or may not send the second information. This application does not make any specific limitations on this.
  • the first terminal can learn which broadcast services the first cell supports providing to it, and/or which services the first cell does not support providing to it, thereby determining whether the first cell supports providing to it the broadcast service of interest or being received, and then taking measures (such as initiating a unicast connection request) to receive the broadcast service as much as possible when it is determined that the first cell does not support providing to it the broadcast service.
  • the network device may not perform dedicated MCCH configuration and CFR configuration for the first terminal. That is, the network device configures a set of MCCH and CFR for the first terminal and the second terminal.
  • the CFR may be greater than the bandwidth of the first terminal.
  • the network device may configure CORESET within the bandwidth of the first terminal to schedule the MCCH message within the bandwidth of the first terminal.
  • the network device also needs to schedule the broadcast service within the bandwidth of the first terminal.
  • the second terminal also receives the broadcast service within the bandwidth of the first terminal.
  • the network device may schedule the broadcast service within the bandwidth of the second terminal.
  • the communication method may further include: sending first configuration information, where the first configuration information is configuration information for the first broadcast service of the first terminal. Accordingly, the first terminal receives the first configuration information and receives the first broadcast service according to the first configuration information.
  • the first configuration information may be carried in an MCCH message. Further, the first configuration information may be carried in configuration information of the first broadcast service included in the MCCH message.
  • the first terminal may determine that it cannot receive the first broadcast service provided by the first cell via broadcast after receiving the first information.
  • the first terminal may also initiate a unicast reception request, which is used to request to receive the first broadcast service in unicast mode.
  • a unicast reception request After the first terminal initiates the unicast reception request, it may establish a unicast connection with the network device, and subsequently receive the first broadcast service through the unicast connection.
  • the first terminal initiating the unicast reception request can be understood as: the first terminal initiating a unicast reception request in the current cell.
  • the current cell may be the cell where the first terminal is currently residing or the service cell currently accessed.
  • the first terminal may trigger cell reselection, or, when the next cell reselection is triggered (the trigger condition may be the cell reselection trigger condition defined in the current 3GPP standard), try to reselect to a cell that supports providing the broadcast service to the first terminal.
  • the physical resource block (PRB) where the PDSCH corresponding to the MCCH message or broadcast service sent by the network device is located can be described relative to the position of the CFR, and the first terminal or the second terminal needs to determine the position of the PDSCH according to the position of the CFR, such as determining the starting PRB and the number of PRBs of the PDSCH.
  • the number of PRBs indicates the length of the allocated continuous PRBs, or the number of PRBs indicates the length or size of the frequency domain resources occupied by the PDSCH.
  • PRB can also be replaced by RB.
  • the network device may schedule the MCCH message or the PDSCH corresponding to the broadcast service based on the CFR corresponding to the first terminal, or may schedule the MCCH message or the PDSCH corresponding to the broadcast service based on the CFR corresponding to the second terminal.
  • the network device may schedule the MCCH message or the PDSCH corresponding to the broadcast service based on the CFR, and optionally, the bandwidth size of the CFR may be greater than the working bandwidth of the first terminal.
  • scheduling PDSCH based on CFR can be understood as follows: the location of PDSCH is described relative to the location of the CFR. For example, assuming that the starting position of CFR is PRB10, the location of PDSCH scheduled by the network device may be indicated as: the starting position is offset by 5 PRBs, and the number of PRBs is 3, then the absolute position of the PDSCH is: the starting position is PRB15, and the number of PRBs is 3, that is, the PDSCH is located at PRB15-PRB17.
  • the network device may provide DCI for the first terminal and the second terminal respectively to schedule MCCH messages, or provide DCI for the first terminal and the second terminal respectively to schedule broadcast services, or may provide one DCI for the first terminal and the second terminal to schedule MCCH messages, or provide one DCI for the first terminal and the second terminal to schedule broadcast services.
  • the network device may send a first indication information associated with a DCI, where the DCI is used to schedule a PDSCH corresponding to an MCCH message or a PDSCH corresponding to a broadcast service.
  • the first indication information indicates whether the PDSCH scheduled by the DCI associated with the first indication information is based on a CFR scheduling corresponding to the first terminal or based on a CFR scheduling corresponding to the second terminal.
  • the DCI includes the first indication information.
  • the network device may send the first DCI and the second DCI.
  • the first indication information associated with the first DCI may indicate that the PDSCH scheduled by the first DCI is scheduled based on the CFR corresponding to the first terminal.
  • the first indication information associated with the first DCI may also indicate that the first DCI is provided for the first terminal, or the first indication information may also indicate that the second terminal is not allowed to receive the PDSCH scheduled by the first DCI, or the first indication information may also indicate that the second terminal does not receive the PDSCH scheduled by the first DCI. If the second terminal receives the first DCI, it may determine that the first DCI is provided for the first terminal according to the first indication information associated with the first DCI, or the second terminal may not receive the PDSCH scheduled by the first DCI.
  • the first indication information may be understood as the above-mentioned first information, the first information indicating that the first cell provides the broadcast service to the first terminal, or the first cell is providing the broadcast service to the first terminal, or the first information indicates that the first cell provides the scheduling of the broadcast service to the first terminal, or the first information indicates that the first cell is providing the scheduling of the broadcast service to the first terminal, or the first information indicates that the data currently sent by the first cell is the data of the broadcast service provided to the first terminal.
  • the second terminal can determine the location of the PDSCH scheduled by the first DCI according to the first offset.
  • the first offset is the offset between the starting position of the CFR corresponding to the first terminal and the starting position of the CFR corresponding to the second terminal.
  • the first offset can be indicated in the first DCI, such as the first DCI includes second indication information, the second indication information indicates the first offset, or the first offset can also be determined by the second terminal according to the starting position of the CFR corresponding to the first terminal and the starting position of the CFR corresponding to the second terminal.
  • the second terminal can determine the offset between the starting position of the PDSCH scheduled by the first DCI and the starting position of the CFR corresponding to the second terminal according to the first offset to determine the starting position of the PDSCH, and then determine the position of the PDSCH according to the number of PRBs occupied by the PDSCH.
  • the first offset is 2 PRBs.
  • the starting position of the PDSCH indicated in the first DCI is offset by 3 PRBs, and the number of PRBs is 3, then since the PDSCH is scheduled based on the CFR corresponding to the first terminal, the actual starting position of the PDSCH is PRB15.
  • the second terminal can add the first offset (2 PRBs) to the starting position (PRB10) of the CFR corresponding to the second terminal, and add the offset of the starting position of the PDSCH indicated in the DCI (i.e., 3 PRBs), and obtain the starting position of the PDSCH as PRB15, and then determine the position of the PDSCH as PRB15-PRB17 according to the size of the PDSCH as 3 PRBs.
  • the first indication information associated with the second DCI may indicate that the PDSCH scheduled by the second DCI is scheduled based on the CFR corresponding to the second terminal.
  • the first indication information associated with the second DCI may also indicate that the second DCI is provided for the second terminal, or the first indication information may also indicate that the first terminal is not allowed to receive the PDSCH scheduled by the DCI, or the first indication information may also indicate that the first terminal does not receive the PDSCH scheduled by the DCI. If the first terminal receives the second DCI, it may determine that the second DCI is provided for the second terminal according to the first indication information associated with the second DCI, or the first terminal may not receive the PDSCH scheduled by the second DCI.
  • the first indication information may be understood as the above-mentioned first information, the first information indicating that the first cell does not provide the broadcast service to the first terminal, or the first information indicating that the first cell does not currently provide the broadcast service to the first terminal, or the first information indicating that the first cell does not provide the scheduling of the broadcast service to the first terminal, or the first information indicating that the first cell does not currently provide the scheduling of the broadcast service to the first terminal, or the first information indicating that the data currently sent by the first cell is not the data of the broadcast service provided to the first terminal.
  • the first terminal may determine the location of the PDSCH scheduled by the second DCI according to the first offset.
  • the first offset may refer to the above related description.
  • the first terminal can determine the offset between the starting position of the PDSCH scheduled by the second DCI and the starting position of the CFR corresponding to the first terminal according to the first offset to determine the starting position of the PDSCH, and then determine the position of the PDSCH according to the number of PRBs occupied by the PDSCH.
  • the first offset is 2 PRBs.
  • the starting position of the PDSCH indicated in the DCI is offset by 5 PRBs and the number of PRBs is 3, then since the PDSCH is scheduled based on the CFR corresponding to the second terminal, the actual starting position of the PDSCH is PRB15.
  • the first terminal can subtract the first offset (2 PRBs) from the starting position of the CFR corresponding to the first terminal (PRB12), and add the offset of the starting position of the PDSCH indicated in the DCI (i.e., 5 PRBs), and obtain the starting position of the PDSCH as PRB15, and then determine the position of the PDSCH as PRB15-PRB17 according to the size of the PDSCH as 3 PRBs.
  • the network device may send a third DCI when the network device provides a DCI for the first terminal and the second terminal to schedule an MCCH message, or provides a DCI for the first terminal and the second terminal to schedule a broadcast service.
  • the first indication information associated with the third DCI may indicate that the PDSCH scheduled by the third DCI is based on the CFR scheduling corresponding to the first terminal, or may indicate that the PDSCH scheduled by the third DCI is based on the CFR scheduling corresponding to the second terminal.
  • the way in which the first terminal and the second terminal determine the location of the PDSCH can refer to the aforementioned related instructions and will not be repeated here.
  • the network device may provide DCI for the first terminal and the second terminal respectively to schedule the MCCH message, or provide DCI for the first terminal and the second terminal respectively to schedule the broadcast service.
  • the DCI provided by the network device to the first terminal and the second terminal respectively may adopt different DCI formats, such as DCI format 4_1 and DCI format 4_2 respectively, that is, different DCI formats are used to distinguish the DCI provided to the first terminal and the second terminal.
  • the DCI provided by the network device to the first terminal and the second terminal respectively may be scrambled using different RNTIs, that is, different RNTIs are used to distinguish the DCI provided to the first terminal and the second terminal.
  • the PDSCH scheduled by the DCI provided to the first terminal is scheduled based on the CFR corresponding to the first terminal; the PDSCH scheduled by the DCI provided to the second terminal is scheduled based on the CFR corresponding to the second terminal.
  • the first terminal and the second terminal can accurately determine the location of the PDSCH corresponding to the MCCH message or broadcast service, thereby improving the reception success rate of the MCCH message or broadcast service and improving communication performance.
  • the network device configures the same CFR for the first terminal and the second terminal, and the bandwidth of the CFR is smaller than the working bandwidth of the first terminal.
  • the first terminal can determine the location of the PDSCH according to the second offset.
  • the second offset is the offset between the starting position of the CFR and the starting position of the working bandwidth of the first terminal.
  • the first terminal can determine the offset between the starting position of the DCI-scheduled PDSCH and the starting position of the working bandwidth of the first terminal according to the second offset to determine the starting position of the PDSCH, and then determine the position of the PDSCH according to the number of PRBs of the PDSCH.
  • the embodiment of the present application further provides a communication method, which is used to design the behavior of the second terminal in a scenario where the first type of terminal is introduced.
  • the communication method includes the following steps:
  • the network device determines third information.
  • the third information indicates whether the second terminal is allowed to receive the MCCH message provided to the first terminal (or the first type of terminal). Alternatively, the third information indicates whether the second terminal is allowed to receive the broadcast service provided to the first terminal (or the first type of terminal).
  • the third information indicates whether the second terminal is allowed to receive the MCCH message or broadcast service provided to the first terminal, which can also be understood as: the third information indicates whether the second terminal receives the MCCH message or broadcast service provided to the first terminal.
  • the network device may perform MCCH configuration and CFR configuration for the first terminal and the second terminal respectively.
  • the CFR configured by the network device for the second terminal may be greater than the CFR configured for the first terminal.
  • the corresponding CFR of the second terminal (denoted as CFR2) may include the CFR corresponding to the first terminal (denoted as CFR1).
  • the network device may also configure CORESET in the CFR, such as configuring CORESET#2 in the CFR corresponding to the second terminal and configuring CORESET#1 in the CFR corresponding to the first terminal.
  • the network device may send DCI3 and DCI4 to the first terminal and the second terminal respectively, wherein DCI3 is used to schedule the MCCH message provided to the first terminal in the CFR configured for the first terminal, and DCI4 is used to schedule the MCCH message provided to the second terminal in the CFR configured for the second terminal. Furthermore, as shown in FIG11 , DCI3 and DCI4 may schedule the MCCH message provided to the first terminal and the MCCH message provided to the second terminal on different PDSCH resources (represented by MCCH1 and MCCH2 in FIG11 ).
  • the second terminal since the CFR configured by the network device for the second terminal is greater than the CFR configured for the first terminal, the second terminal is capable of receiving the MCCH message or broadcast service provided by the network device to the first terminal.
  • the network device can indicate whether the second terminal is allowed to receive the MCCH message or broadcast service provided to the first terminal.
  • the MCCH message provided by the network device to the first terminal and the second terminal may include configuration information of the broadcast service.
  • the network device may schedule the broadcast service on the same PDSCH resource for the first terminal and the second terminal; or, the network device may schedule the broadcast service on different PDSCH resources for the first terminal and the second terminal respectively.
  • the broadcast service provided to the second terminal may be sent on a larger bandwidth.
  • the network device may schedule broadcast service 1 on the same PDSCH resource for the first terminal and the second terminal (represented by MTCH1 in FIG11 ).
  • the network device may schedule broadcast service 2 on different PDSCH resources for the first terminal and the second terminal, respectively (represented by MTCH1 and MTCH2 in FIG11 ).
  • the network device when the network device schedules the broadcast service for the first terminal and the second terminal on different PDSCH resources respectively, since the second terminal is capable of receiving the broadcast service provided for the first terminal, the network device can indicate whether the second terminal is allowed to receive the broadcast service provided for the first terminal.
  • S1002 The network device sends third information.
  • the second terminal receives the third information.
  • the third information may be carried in the system information.
  • the third information indicates whether the second terminal is allowed to receive the MCCH message or broadcast service provided to the first terminal, which can be understood as: the third information indicates whether the second terminal is allowed to receive the MCCH message or broadcast service provided to the first terminal within a period of time.
  • the period of time may be a preset or preconfigured time, or may be from the current moment to before the third information or system information changes.
  • the system information may be, for example, SIB1, SIB20, or SIB21, etc.
  • the third information may be carried in an MCCH message.
  • the MCCH message may be an MCCH message provided to the first terminal.
  • the third information indicates whether the second terminal is allowed to receive the MCCH message or broadcast service provided to the first terminal, which can be understood as: whether the second terminal is allowed to receive the current MCCH message (i.e., the MCCH message carrying the third information), or whether the second terminal is allowed to receive the broadcast service corresponding to the MTCH configuration information carried in the current MCCH message.
  • the third information may be carried in the DCI, or the third information may be associated with the DCI.
  • the third information may be carried in at least one of the following DCIs, or the third information may be associated with at least one of the following DCIs, and the following description is made by taking the third information carried in the DCI as an example.
  • the third information is carried in the DCI used to schedule the MCCH message provided to the first terminal.
  • the third information indicates whether the second terminal is allowed to receive the MCCH message scheduled by the DCI, or that the third information indicates whether the second terminal is allowed to receive the MCCH message.
  • the PDSCH scheduled by DCI for carrying the MCCH message, or the third information is considered to indicate whether the second terminal receives the MCCH message scheduled by the DCI, or the third information is considered to indicate whether the second terminal receives the PDSCH scheduled by the DCI for carrying the MCCH message.
  • the third information may indicate whether the DCI-scheduled MCCH message (or the PDSCH corresponding to the MCCH message) is scheduled based on the CFR corresponding to the first terminal or the CFR corresponding to the second terminal.
  • the third information In the case of scheduling based on the CFR corresponding to the first terminal, it indicates that the third information also indicates that the second terminal is not allowed to receive the DCI-scheduled MCCH message or the PDSCH corresponding to the MCCH message; in the case of scheduling based on the CFR corresponding to the second terminal, it indicates that the third information also indicates that the second terminal is allowed to receive the DCI-scheduled MCCH message or the PDSCH corresponding to the MCCH message.
  • the third information is carried in the DCI for scheduling the broadcast service provided to the first terminal.
  • the third information indicates whether the second terminal is allowed to receive the broadcast service scheduled by the DCI, or that the third information indicates whether the second terminal is allowed to receive the PDSCH scheduled by the DCI for carrying the broadcast service, or that the third information indicates whether the second terminal receives the broadcast service scheduled by the DCI, or that the third information indicates whether the second terminal receives the PDSCH scheduled by the DCI for carrying the broadcast service.
  • the third information may indicate whether the broadcast service (or the PDSCH corresponding to the broadcast service) scheduled by the DCI is scheduled based on the CFR corresponding to the first terminal or the CFR corresponding to the second terminal.
  • the third information In the case of scheduling based on the CFR corresponding to the first terminal, it means that the third information also indicates that the second terminal is not allowed to receive the broadcast service scheduled by the DCI or the PDSCH corresponding to the broadcast service; in the case of scheduling based on the CFR corresponding to the second terminal, it means that the third information also indicates that the second terminal is allowed to receive the broadcast service scheduled by the DCI or the PDSCH corresponding to the broadcast service.
  • the network device may schedule the PDSCH corresponding to the MCCH message or the PDSCH corresponding to the broadcast service based on the CFR corresponding to the first terminal, or may schedule the PDSCH corresponding to the MCCH message or the PDSCH corresponding to the broadcast service based on the CFR corresponding to the second terminal, or may schedule the PDSCH corresponding to the MCCH message or the PDSCH corresponding to the broadcast service based on the same set of CFR configured for the first terminal and the second terminal.
  • the implementation of DCI in these scenarios and the way the first terminal and the second terminal determine the location of the PDSCH can refer to the above-mentioned relevant instructions, which will not be repeated here.
  • the network device may carry third information in the DCI each time scheduling is performed, and the indication of the third information carried in the DCI each time scheduling may be the same or different.
  • the third information is carried in the DCI to indicate that the second terminal is not allowed to receive the MCCH message scheduled by the current DCI; when the network device schedules the MCCH message provided to the first terminal for the second time, the third information is carried in the DCI to indicate that the second terminal is allowed (or not allowed) to receive the MCCH message scheduled by the current DCI.
  • This application does not make specific limitations on this.
  • the third information can be implemented by 4 different values of 2 bits.
  • each value of the 2 bits corresponds to a situation in Table 1 above.
  • the third information can be implemented by an enumeration value.
  • the third information may include two enumeration values corresponding to the MCCH message and the broadcast service respectively.
  • the enumeration value corresponding to the MCCH message is set to "true”, it indicates that the second terminal is allowed to receive the MCCH message provided to the first terminal; when the enumeration value corresponding to the MCCH message is set to "false", it indicates that the second terminal is not allowed to receive the MCCH message provided to the first terminal.
  • the indication of whether the second terminal is allowed to receive the broadcast service provided to the first terminal is similar and will not be repeated.
  • the third information may jointly indicate whether the second terminal is allowed to receive the MCCH message and the broadcast service provided to the first terminal, that is, the permitted reception of the MCCH message and the broadcast service provided to the first terminal is consistent.
  • Table 2 there may be two situations as shown in Table 2 below:
  • the third information can also be implemented by a 1-bit value, or by an enumeration value. Please refer to the relevant instructions in the previous scenario and will not be repeated here.
  • the second terminal determines whether to receive the MCCH message or broadcast service provided to the first terminal according to the third information.
  • step S1003 may also be understood as: the second terminal determines, according to the third information, whether it is allowed to receive the MCCH message or broadcast service provided to the first terminal.
  • the second terminal may determine not to receive (or not be allowed to receive) the MCCH message or broadcast service provided to the first terminal. At this time, the second terminal may not receive the MCCH message or broadcast service provided to the first terminal. If the second terminal has received the MCCH message provided to the first terminal, such as the third information is carried in the MCCH message, and the second terminal receives the MCCH message and finds that it is not allowed to receive the MCCH message provided to the first terminal, the second terminal ignores the configuration in the MCCH message, or discards the MCCH message provided to the first terminal.
  • the second terminal may determine to receive (or be allowed to receive) the MCCH message or broadcast service provided to the first terminal. At this time, the second terminal may receive the MCCH message or broadcast service provided to the first terminal, or may not receive the MCCH message or broadcast service provided to the first terminal.
  • the network device sends a third information to indicate whether the second terminal is allowed to receive the MCCH message or broadcast service provided to the first terminal.
  • the third information indicates that the second terminal is not allowed to receive the MCCH message or broadcast service provided to the first terminal
  • the power consumption of the second terminal can be saved.
  • the third information can indicate that the second terminal is not allowed to receive the MCCH message or broadcast service provided to the first terminal, thereby reducing the impact on the normal communication of the second terminal and improving the user experience.
  • the embodiment of the present application further provides a communication method for designing a mobility-related scenario of the first terminal in a scenario where the first terminal is introduced.
  • the communication method includes the following steps:
  • the network device determines fourth information.
  • the fourth information indicates whether the second cell provides the second broadcast service to the first terminal (or the first type of terminal).
  • the second cell is a neighboring cell of the third cell
  • the network device is a network device to which the third cell belongs, or the third cell belongs to the network device.
  • the third cell can be a serving cell or a resident cell of the first terminal.
  • the second broadcast service is a broadcast service provided by the third cell, or a broadcast service being provided by the third cell.
  • the second broadcast service is a broadcast service that the first terminal is interested in or is receiving.
  • whether the second cell provides the second broadcast service to the first terminal can also be understood as: whether the second cell is providing the second broadcast service to the first terminal, or whether the second cell can provide the second broadcast service to the first terminal, or whether the second broadcast service provided by the second cell supports reception by the first terminal.
  • the second broadcast service provided by the third cell may or may not support reception by the first terminal.
  • the network device may indicate whether the second broadcast service provided by the third cell supports reception by the first terminal.
  • the indication method may refer to the relevant implementation in the method shown in FIG7 and will not be described in detail here.
  • the first terminal may be receiving the second broadcast service in the third cell, or may not be receiving the second broadcast service in the third cell, and this application does not make specific limitations on this.
  • the network device to which the second cell belongs and the network device to which the third cell belongs are different network devices: the network device to which the second cell belongs may send information to the network device to which the third cell belongs to indicate whether the second cell provides the second broadcast service to the first terminal.
  • the network device to which the third cell belongs may learn whether the second cell provides the second broadcast service to the first terminal through operation administration and maintenance (OAM) configuration.
  • OAM operation administration and maintenance
  • S1202 The network device sends fourth information.
  • the first terminal receives the fourth information.
  • the fourth information may be carried in an MCCH message (referred to as a first MCCH message).
  • the first MCCH message may include configuration information of the second broadcast service, and the configuration information of the second broadcast service may include the fourth information.
  • the configuration information of the second broadcast service may include a neighboring cell list, which may be implemented by a bitmap, that is, each bit in the bitmap corresponds to a neighboring cell of the third cell, and the value of a certain bit may indicate whether the neighboring cell corresponding to the bit provides the second broadcast service to the first terminal.
  • the neighboring cell of the third cell corresponding to the bitmap includes the second cell, that is, the fourth information may be implemented by the value of 1 bit.
  • the value of a certain bit when the value of a certain bit is a first value, it can indicate that the neighboring area corresponding to the bit provides the second broadcast service to the first terminal; or, when the value of a certain bit is a second value, it can indicate that the neighboring area corresponding to the bit does not provide the second broadcast service to the first terminal.
  • the first value and the second value can refer to the above-mentioned related descriptions, which will not be repeated here.
  • the network device may also send seventh information, where the seventh information indicates at least one neighboring cell of the third cell, each of the at least one neighboring cell providing (capable of providing or providing) at least one fourth broadcast service, and the fourth broadcast service is a broadcast service provided by the third cell. That is, the seventh information indicates at least one neighboring cell of the third cell providing one or more broadcast services provided by the third cell.
  • the at least one neighboring cell includes the second cell, and the at least one fourth broadcast service includes the second broadcast service.
  • the seventh information and the fourth information may be carried in the same MCCH message.
  • the seventh information may be carried by the MBS Broadcast Neighbour Cell List information element, or the seventh information may also be called MBS broadcast neighbour cell list information.
  • the number of neighboring areas indicated by the seventh information is the same as the number of bits in the aforementioned bitmap.
  • the first bit in the bitmap may correspond to the first neighboring area indicated by the seventh information
  • the second bit in the bitmap may correspond to the second neighboring area indicated by the seventh information, and so on.
  • the neighboring area of the third cell indicated by the seventh information may be dedicated to the first type of terminal, that is, the seventh information indicates at least one neighboring area of the third cell that provides one or more broadcast services provided by the third cell to the first type of terminal.
  • the network device also indicates whether the second cell provides the second broadcast service to the second terminal (or the second type of terminal)
  • the network device needs to indicate the neighboring area of the third cell for the first type of terminal and the second type of terminal, respectively, and indicate whether the second cell provides the second broadcast service to the first type of terminal and the second type of terminal, respectively.
  • the network device can send the following information:
  • MMS Broadcast Neighbour Cell List (MBS broadcast neighbour cell list):
  • Cell: A, B, C# indicates that for the second type of terminals, the neighboring cells that provide one or more broadcast services provided by the third cell are cell A, cell B and cell C.
  • Cell: A, D# indicates that for the first type of terminal, the neighboring cells that provide one or more broadcast services provided by the third cell are cell A and cell D.
  • TMGI 1: 001# indicates that cells A and B do not provide the broadcast service corresponding to TMGI 1 to the second type of terminals, and cell C provides the broadcast service corresponding to TMGI 1 to the second type of terminals.
  • TMGI 2: 100# indicates that cell A provides the broadcast service corresponding to TMGI 2 to the second type of terminals, while cells B and C do not provide the broadcast service corresponding to TMGI 2 to the second type of terminals.
  • TMGI 1: 01# indicates that cell A does not provide the broadcast service corresponding to TMGI 1 to the first type of terminals, and cell D provides the broadcast service corresponding to TMGI 1 to the first type of terminals.
  • TMGI 2: 11# indicates that cells A and D provide the broadcast service corresponding to TMGI 2 to the first type of terminals.
  • the neighboring area of the third cell indicated by the seventh information may be shared by the first type of terminal and the second type of terminal, that is, the seventh information indicates at least one neighboring area of the third cell that provides one or more broadcast services provided by the third cell to the first type of terminal and the second type of terminal.
  • the network device may send the following information:
  • MMS Broadcast Neighbour Cell List (MBS broadcast neighbour cell list):
  • Cell: A, B, C# indicates that the neighboring cells providing one or more broadcast services provided by the third cell are cell A, cell B and cell C.
  • TMGI 1: 001# indicates that cells A and B do not provide the broadcast service corresponding to TMGI 1 to the second type of terminals, and cell C provides the broadcast service corresponding to TMGI 1 to the second type of terminals.
  • TMGI 2: 100# indicates that cell A provides the broadcast service corresponding to TMGI 2 to the second type of terminals, while cells B and C do not provide the broadcast service corresponding to TMGI 2 to the second type of terminals.
  • TMGI 1:000# indicates that cell A, cell B and cell C do not provide the broadcast service corresponding to TMGI 1 to the first type of terminals.
  • TMGI 2: 110# indicates that cells A and B provide the broadcast services corresponding to TMGI 2 to the first type of terminals, and cell C does not provide the broadcast services corresponding to TMGI 2 to the first type of terminals.
  • the fourth information may include an identifier of the second cell and a corresponding indication thereof, the indication being used to indicate whether to provide the second broadcast service to the first terminal.
  • the indication may be a 1-bit indicator or an enumeration value, which is not specifically limited in this application.
  • the first MCCH message carrying the fourth information may be an MCCH message dedicated to the first type of terminal. If the network device further indicates whether the second cell provides the second broadcast service to the second terminal (or the second type of terminal), the network device may send a MCCH message for the second type of terminal.
  • the second MCCH message includes the eighth information, and the eighth information indicates whether the second cell provides the second broadcast service to the second terminal.
  • the second MCCH message may also carry the fourth information and the seventh information.
  • the neighboring area of the third cell indicated by the seventh information may not provide any broadcast service, or may not provide one or more broadcast services provided by the third cell. That is, the neighboring area indicated by the network device to the terminal device does not necessarily provide one or more broadcast services provided by the third cell. Based on this possible implementation, when the broadcast service provided by the third cell changes rapidly, the network device can avoid frequently updating the neighboring area list of the third cell.
  • the first terminal determines, according to the fourth information, whether the second cell provides a second broadcast service to the first terminal.
  • the first terminal determines that the second cell does not provide the second broadcast service to the first terminal.
  • the fourth information indicates that the second cell provides the second broadcast service to the first terminal
  • the first terminal determines that the second cell provides the second broadcast service to the first terminal.
  • the first terminal may determine whether the second cell provides the second broadcast service to the first terminal based on the fourth information and the seventh information. For example, the first terminal may determine the bit corresponding to the second cell in the bitmap based on the seventh information, and then determine whether the second cell provides the second broadcast service to the first terminal based on the value of the bit.
  • the second cell does not provide the second broadcast service to the first terminal, which can be understood as: the second cell provides (or can provide) the second broadcast service, but the second cell does not provide the second broadcast service to the first terminal.
  • the second cell can provide the second broadcast service to the second terminal, but does not provide the second broadcast service to the first terminal.
  • the first terminal may reselect to the second cell in a subsequent cell reselection process to receive the second broadcast service. If the second cell does not provide the second broadcast service to the first terminal, the first terminal may initiate a unicast reception request, which is used to request to receive the second broadcast service in a unicast manner.
  • the unicast reception request may be initiated in the third cell, that is, a request may be made to receive the second broadcast service in the third cell in a unicast manner. Subsequently, when the second cell is reselected during the cell reselection process, or when the first terminal moves to the second cell, the first terminal may continue to establish a unicast connection with the second cell to receive the second broadcast service in the second cell in a unicast manner.
  • the network device sends fourth information to indicate whether the neighboring cell of the third cell provides the second broadcast service to the first terminal.
  • the first terminal can reselect to the neighboring cell that provides the second broadcast service to the first terminal according to the fourth information when reselecting the cell, so that the first terminal can improve the continuity of the second broadcast service when the third cell is receiving the second broadcast service, or can improve the success rate of receiving the second broadcast service when the first terminal does not receive the second broadcast service in the third cell but is interested in the second broadcast service.
  • the embodiment of the present application also provides a communication method under a CU-DU separation architecture, which is used to design a mobility-related scenario of the first terminal in a scenario where the first terminal is introduced.
  • the communication method includes the following steps:
  • the fourth information indicates whether the second cell provides the second broadcast service to the first terminal (or the first type of terminal), and the second cell is a neighboring cell of the third cell.
  • the second broadcast service is a broadcast service provided by the third cell. Please refer to the relevant description in the above step S1201, which will not be repeated here.
  • a DU managed by the CU is a DU to which the third cell belongs, or in other words, the third cell belongs to a DU managed by the CU.
  • the second broadcast service provided by the third cell may or may not support reception by the first terminal. That is, the DU may or may not need to provide or send the second broadcast service to the first terminal.
  • S1902 The CU sends fourth information to the DU.
  • the DU receives the fourth information from the CU.
  • the implementation form of the fourth information can refer to the relevant instructions in the above step S1202, which will not be repeated here.
  • the fourth information may be carried in at least one of the following: neighbor cell service indication (mtch-NeighbourCell): broadcast context establishment request (BROADCAST CONTEXT SETUP REQUEST) message or broadcast context change request (BROADCAST CONTEXT MODIFICATION REQUEST) message.
  • neighbor cell service indication mimtch-NeighbourCell
  • broadcast context establishment request BROADCAST CONTEXT SETUP REQUEST
  • broadcast context change request BROADCAST CONTEXT MODIFICATION REQUEST
  • the CU may also send seventh information to the DU, where the seventh information indicates at least one neighboring area of the third cell, which provides one or more broadcast services provided by the third cell.
  • the neighboring area of the third cell indicated by the seventh information may be dedicated to the first type of terminal, or may be shared by the first type of terminal and the second type of terminal. Please refer to the relevant instructions in the above step S1202, which will not be repeated here.
  • the seventh information may be carried in at least one of the following: an F1 setup response (F1 SETUP RESPONSE) message, a DU configuration update confirmation (DU CONFIGURATION UPDATE ACKNOWLEDGE) message, or a CU configuration update (CU CONFIGURATION UPDATE) message.
  • F1 setup response F1 SETUP RESPONSE
  • DU configuration update confirmation DU CONFIGURATION UPDATE ACKNOWLEDGE
  • CU configuration update CU CONFIGURATION UPDATE
  • the CU may also send eighth information to the DU, where the eighth information indicates whether the second cell provides the second broadcast service to the second terminal (or the second type of terminal).
  • the implementation of the eighth information may refer to the relevant description of the fourth information, which will not be repeated here.
  • the eighth information and the fourth information may be carried in the same message or in two messages, and this application does not impose any specific limitation on this.
  • the neighboring cell of the third cell indicated by the seventh information may not provide any broadcast service, or may not provide one or more broadcast services provided by the third cell. Please refer to the relevant description in the above step S1202, which will not be repeated here.
  • the DU sends a first MCCH message.
  • the first terminal receives the first MCCH message.
  • the first MCCH message includes the fourth information.
  • the first MCCH message also includes the seventh information.
  • the DU may also send a second MCCH message, and the second MCCH message is used for the second type of terminal.
  • the second MCCH message includes the eighth information.
  • the second MCCH message may be received by the second type of terminal.
  • the second MCCH message and the first MCCH message are different MCCH messages. That is, the DU may send an MCCH message separately for the first type of terminal.
  • the second MCCH message may further include the fourth information, or include the fourth information and the seventh information.
  • the second MCCH message may also be received by the first terminal.
  • the first terminal may also perform the following step S1904 according to the fourth information carried in the second MCCH message.
  • the first terminal determines whether the second cell provides the second broadcast service to the first terminal according to the fourth information. Please refer to the relevant description of the above step S1203, which will not be repeated here.
  • the second terminal may determine whether the second cell provides the second broadcast service to the second terminal according to the eighth information.
  • the relevant implementation of the first terminal may be referred to and will not be described in detail here.
  • the steps/functions implemented by the CU may be implemented by the CU-CP.
  • the CU sends the fourth information to the DU to indicate whether the neighboring cell of the third cell provides the second broadcast service to the first terminal, so that the DU can send the first MCCH message to the first terminal to carry the fourth information, and then the first terminal can reselect to the neighboring cell that provides the second broadcast service to the first terminal according to the fourth information when reselecting the cell, so that the first terminal can improve the continuity of the second broadcast service when the third cell is receiving the second broadcast service, or the first terminal can improve the success rate of receiving the second broadcast service when the third cell does not receive the second broadcast service but is interested in the second broadcast service.
  • the present application also provides a communication method under a CU-DU separation architecture.
  • the communication method may include the following steps:
  • CU sends a first message to DU.
  • DU receives the first message from CU.
  • the first message is associated with a broadcast service, or the first message is per broadcast service, that is, the first message is based on the granularity of the broadcast service.
  • the broadcast service associated with the first message is recorded as the second broadcast service in the following embodiments. That is, the first message is a message associated with the second broadcast service.
  • the second broadcast service can be any broadcast service.
  • the first message is used to request to establish or modify the broadcast context of the second broadcast service.
  • the first message can be a broadcast context establishment request (BROADCAST CONTEXT SETUP REQUEST) message or a broadcast context modification request (BROADCAST CONTEXT MODIFICATION REQUEST) message.
  • the first message includes regional information, which indicates the area in which the CU expects or requests to provide the second broadcast service.
  • the regional information may include at least one cell identifier, indicating that the CU expects or requests that the cell indicated by the at least one cell identifier can provide the second broadcast service, and the at least one cell may be referred to as the cell requested to provide the second broadcast service.
  • the at least one cell identifier may include identifiers of some or all cells managed by the DU, and may also include identifiers of some or all cells managed by other DUs.
  • step S2001 is an optional step, that is, the CU may not send the first message.
  • S2002 DU sends a second message to CU.
  • CU receives the second message from DU.
  • the second message is associated with the broadcast service, or the second message is per broadcast service, that is, the second message is based on the broadcast service granularity.
  • the broadcast service associated with the second message is recorded as the second broadcast service in the following embodiments. That is, the second message is a message associated with the second broadcast service.
  • the second message when step S2001 is executed, that is, when the CU sends the first message to the DU, the second message may be a response message to the first message.
  • the second message may be used to reply to a request to establish or modify the broadcast context of the second broadcast service.
  • the second message may be a broadcast context setup response (BROADCAST CONTEXT SETUP RESPONSE) message or a broadcast context modification response (BROADCAST CONTEXT MODIFICATION RESPONSE) message.
  • the second message may be any message associated with the second broadcast service sent by the DU to the CU, and the present application does not specifically limit the type or function of the second message.
  • the second message includes the ninth information and/or the tenth information.
  • the ninth information indicates the area where the second broadcast service is sent to the first terminal, or indicates the area where the broadcast session corresponding to the second broadcast service is sent to the first terminal. It can be understood as: an area where the second broadcast service is sent to the first terminal, or a cell that sends or provides the second broadcast service to the first terminal.
  • the ninth information indicates an area where the second broadcast service is sent, and the area corresponds to the first terminal, or indicates an area where the broadcast session corresponding to the second broadcast service is sent, and the area corresponds to the first terminal.
  • sending can be understood as sending, successfully sending, already sent, providing, providing, successfully providing, already provided, etc.
  • the ninth information may indicate the area to which the second broadcast service is sent to the first terminal by indicating full or partial success.
  • the ninth information may indicate that all or part of the cells within the first area successfully provide the second broadcast service to the first terminal, or indicate that all or part of the cells within the first area successfully establish a broadcast service corresponding to the second broadcast service for the first terminal, or indicate that all or part of the cells within the first area successfully transmit the second broadcast service to the first terminal.
  • the area to which the second broadcast service is sent to the first terminal is all or part of the cells within the first area.
  • the first area range includes at least one cell.
  • the cells within the first area range can also be understood as cells requested to provide the second broadcast service.
  • the first area range can be all cells managed by the DU; or, the first area range can be the area indicated by the above-mentioned area information.
  • the first area range can be all cells managed by the DU; when the CU sends area information to the DU, the first area range can be all messages managed by the DU, or it can be the area indicated by the area information, without limitation.
  • the ninth information indicating full success can be understood as: the ninth information indicates that all cells managed by the DU within the first area successfully provide the second broadcast service for the first terminal, or all successfully establish the broadcast service corresponding to the second broadcast service for the first terminal, or all successfully transmit the second broadcast service to the first terminal.
  • the ninth information indicating partial success can be understood as: the ninth information indicates that some cells managed by the DU within the first area successfully provide the second broadcast service for the first terminal, or some cells successfully establish the broadcast service corresponding to the second broadcast service for the first terminal, or some cells successfully transmit the second broadcast service to the first terminal. In other words, the ninth information can indicate the cell that successfully provides the second broadcast service to the first terminal.
  • cell 1, cell 2, and cell 3 can be some cells managed by DU, or all cells managed by DU.
  • the ninth information can be carried by a RedCap broadcast area scope (BroadcastAreaScope-redcap) cell, or the ninth information can also be called RedCap broadcast area scope or RedCap broadcast area scope indication information.
  • the ninth information can also be carried by other cells and can have other names, and the above cell names and cells do not constitute a limitation.
  • the BroadcastAreaScope-redcap information element can be set to CompleteSuccess. If the ninth information indicates partial success, the BroadcastAreaScope-redcap information element can be set to PartialSuccess. In addition, when the BroadcastAreaScope-redcap information element is set to PartialSuccess, the BroadcastAreaScope-redcap information element can also include the identifiers of some cells that provide the second broadcast service to the first terminal, such as the cell global identity (CGI). Exemplarily, the identifier of the cell can be located in the broadcast cell list (Broadcast Cell List).
  • CGI cell global identity
  • the tenth information may have the following three implementations:
  • the tenth information indicates an area where the second broadcast service is sent to the second terminal, or indicates an area where the broadcast session corresponding to the second broadcast service is sent to the second terminal.
  • the area where the second broadcast service is sent to the second terminal can also be understood as: an area where the second broadcast service is sent to the second terminal, or a cell that sends or provides the second broadcast service to the second terminal.
  • the tenth information indicates an area where the second broadcast service is sent, and the area corresponds to the second terminal, or indicates an area where the broadcast session corresponding to the second broadcast service is sent, and the area corresponds to the second terminal.
  • sending can be understood as being sent, successfully sent, already sent, provided, being provided, successfully provided, already provided, etc.
  • the tenth information may indicate the area to which the second broadcast service is sent to the second terminal by indicating full or partial success.
  • the tenth information may indicate that all or part of the cells within the first area successfully provide the second broadcast service to the second terminal, or indicate that all or part of the cells within the first area successfully establish a broadcast service corresponding to the second broadcast service for the second terminal, or indicate that all or part of the cells within the first area successfully transmit the second broadcast service to the second terminal.
  • the area to which the second broadcast service is sent to the second terminal is all or part of the cells within the first area.
  • the first area range can refer to the aforementioned related instructions and will not be repeated here.
  • the tenth information indicating all success can be understood as: the tenth information indicates that all cells managed by the DU within the first area successfully provide the second broadcast service to the second terminal, or all cells successfully establish the broadcast service corresponding to the second broadcast service for the second terminal, or all cells successfully establish the second broadcast service corresponding to the second broadcast service for the second terminal.
  • the second terminal successfully transmits the second broadcast service.
  • the tenth information indicating partial success can be understood as: the tenth information indicates that some cells managed by the DU within the first area successfully provide the second broadcast service for the second terminal, or some cells successfully establish the broadcast service corresponding to the second broadcast service for the second terminal, or some cells successfully transmit the second broadcast service for the second terminal.
  • the tenth information can indicate the cell that successfully provides the second broadcast service for the second terminal.
  • the tenth information may be carried by a broadcast area scope (BroadcastAreaScope) cell, or the tenth information may also be called broadcast area scope or broadcast area scope indication information.
  • the tenth information may also be carried by other cells and may have other names, and the above cell names and cells do not constitute limitations. Please refer to the relevant description of the above ninth information, which will not be repeated here.
  • the DU may send the ninth information to the CU but not send the tenth information.
  • the CU may learn the cell managed by the DU that provides the second broadcast service for the first terminal based on the ninth information; or, the tenth information may be sent but not the ninth information.
  • the CU may learn the cell managed by the DU that provides the second broadcast service for the second terminal based on the tenth information; or, the ninth information and the tenth information may be sent.
  • the CU may learn the cell managed by the DU that provides the second broadcast service for the first terminal based on the ninth information, and learn the cell that provides the second broadcast service for the second terminal based on the tenth information.
  • the ninth information and the tenth information may be carried in one message or in different messages, without specific limitation.
  • the ninth information indicates that cell 1 and cell 2 successfully provide the second broadcast service for the first terminal
  • the tenth information indicates that cell 1, cell 2, and cell 3 successfully provide the second broadcast service for the second terminal
  • the tenth information and the ninth information can be implemented in the following form:
  • the tenth information indicates an area where the second broadcast service is sent to the first terminal and/or the second terminal, or indicates an area where the broadcast session corresponding to the second broadcast service is sent to the first terminal and/or the second terminal.
  • the area where the second broadcast service is sent to the first terminal and/or the second terminal can also be understood as: an area where the second broadcast service is sent to the first terminal and/or the second terminal, or a cell that provides the second broadcast service to the first terminal and/or the second terminal.
  • the tenth information indicates an area where the second broadcast service is sent, and the area corresponds to the first terminal and/or the second terminal, or indicates an area where the broadcast session corresponding to the second broadcast service is sent, and the area corresponds to the first terminal and/or the second terminal.
  • sending can be understood as sending, successfully sending, already sent, providing, providing, successfully providing, already provided, etc.
  • the tenth information may indicate the area where the second broadcast service is sent to the first terminal and/or the second terminal by indicating full or partial success.
  • the tenth information may indicate that all or part of the cells within the first area successfully provide the second broadcast service to the first terminal and/or the second terminal, or indicate that all or part of the cells within the first area successfully establish a broadcast service corresponding to the second broadcast service for the first terminal and/or the second terminal, or indicate that all or part of the cells within the first area successfully transmit the second broadcast service to the first terminal and/or the second terminal.
  • the area where the second broadcast service is sent to the first terminal and/or the second terminal is all or part of the cells within the first area.
  • the first area range can refer to the aforementioned related instructions and will not be repeated here.
  • the tenth information indicating full success can be understood as: the tenth information indicates that all cells managed by the DU within the first area successfully provide the second broadcast service for the first terminal and/or the second terminal, or all successfully establish the broadcast service corresponding to the second broadcast service for the first terminal and/or the second terminal, or all successfully transmit the second broadcast service to the first terminal and/or the second terminal.
  • the tenth information indicating partial success can be understood as: the tenth information indicates that the DU managed within the first area successfully provides the second broadcast service for the first terminal and/or the second terminal, or some cells successfully establish the broadcast service corresponding to the second broadcast service for the first terminal and/or the second terminal, or some cells successfully transmit the second broadcast service for the first terminal and/or the second terminal.
  • the tenth information can indicate the cell that successfully provides the second broadcast service.
  • the DU may send the tenth information to the CU.
  • the first area includes cell 1, cell 2, cell 3, and cell 4, and cell 1, cell 2, and cell 3 are managed by DU.
  • the tenth information indicates full success; if cell 1 provides the second broadcast service for the first terminal, cell 2 provides the second broadcast service for the second terminal, and cell 3 does not provide the second broadcast service, the tenth information indicates partial success, and the DU can also indicate the identifiers of cell 1 and cell 2 to the CU.
  • the tenth information can be carried by the broadcast area scope (BroadcastAreaScope) information element. When the tenth information indicates partial success, the BroadcastAreaScope information element can also include the identifiers of these cells. Please refer to the relevant instructions in the first possible implementation above, which will not be repeated here.
  • the CU can obtain the cell providing the second broadcast service among the cells managed by the DU based on the tenth information, but cannot know whether the second broadcast service is provided for the first terminal or the second terminal, or for the first terminal and the second terminal.
  • the DU may send the ninth information to the CU but not send the tenth information. Accordingly, the CU may obtain the cell managed by the DU and providing the second broadcast service to the first terminal based on the ninth information.
  • the DU may send the tenth information to the CU but not the ninth information. Accordingly, the CU may learn the cell managed by the DU and providing the second broadcast service based on the tenth information, but may not learn whether the second broadcast service is provided for the first terminal or the second terminal, or for both the first terminal and the second terminal.
  • the DU may send the ninth information and the tenth information to the CU, and accordingly, the CU may learn the cell managed by the DU that provides the second broadcast service for the first terminal based on the ninth information, and learn the cell that provides the second broadcast service for the second terminal based on the ninth information and the tenth information.
  • the cell that provides the second broadcast service for the second terminal is the difference set of the cell indicated by the tenth information and the cell indicated by the ninth information.
  • the ninth information indicating that the cells providing the second broadcast service for the first terminal are cell 1 and cell 2 as an example, if the tenth information indicates that the cells providing the second broadcast service for the first terminal and/or the second terminal are cell 1, cell 2, cell 3 and cell 4, then the cells providing the second broadcast service for the second terminal are cell 3 and cell 4.
  • the ninth information and the tenth information may be carried in one message or in different messages, and there is no specific limitation on this.
  • the tenth information indicates an area where the second broadcast service is sent to the first terminal and the second terminal, or indicates an area where the broadcast session corresponding to the second broadcast service is sent to the first terminal and the second terminal.
  • the area where the second broadcast service is sent to the first terminal and the second terminal can also be understood as: an area where the second broadcast service is sent to the first terminal and the second terminal, or a cell that provides the second broadcast service to the first terminal and the second terminal.
  • the tenth information indicates an area where the second broadcast service is sent, which area corresponds to the first terminal and the second terminal, or indicates an area where the broadcast session corresponding to the second broadcast service is sent, which area corresponds to the first terminal and the second terminal.
  • sending can be understood as sending, successfully sending, already sent, providing, providing, successfully providing, already provided, etc.
  • the tenth information may indicate the area where the second broadcast service is sent to the first terminal and the second terminal by indicating full or partial success.
  • the tenth information may indicate that all or part of the cells within the first area successfully provide the second broadcast service to the first terminal and the second terminal, or indicate that all or part of the cells within the first area successfully establish a broadcast service corresponding to the second broadcast service for the first terminal and the second terminal, or indicate that all or part of the cells within the first area successfully transmit the second broadcast service to the first terminal and the second terminal.
  • the area where the second broadcast service is sent to the first terminal and the second terminal is all or part of the cells within the first area.
  • the first area range can refer to the aforementioned related instructions and will not be repeated here.
  • the tenth information indicating full success can be understood as: the tenth information indicating that all cells managed by the DU within the first area successfully provide the second broadcast service for the first terminal and the second terminal, or all successfully establish the broadcast service corresponding to the second broadcast service for the first terminal and the second terminal, or all successfully transmit the second broadcast service for the first terminal and the second terminal.
  • the tenth information indicating partial success can be understood as: the tenth information indicating that some cells managed by the DU within the first area successfully provide the second broadcast service for the first terminal and the second terminal, or some cells successfully establish the broadcast service corresponding to the second broadcast service for the first terminal and the second terminal, or some cells successfully transmit the second broadcast service for the first terminal and the second terminal.
  • the tenth information can indicate the cell that successfully provides the second broadcast service for the first terminal and the second terminal.
  • the DU sends the tenth information to the CU only when there is a cell that can provide the second broadcast service to both the first terminal and the second terminal among the cells managed by the DU and requested to provide the second broadcast service.
  • the tenth information indicates full success; if cell 1 provides the second broadcast service for the first terminal, cell 2 provides the second broadcast service for the second terminal, and cell 3 provides the second broadcast service for the first terminal and the second terminal, the tenth information indicates partial success, and DU can also indicate the identifier of cell 3 to CU.
  • the tenth information may be carried by a BroadcastAreaScope information element.
  • the BroadcastAreaScope information element may also include the identifier of the partial cell. For details, please refer to the related description in the first possible implementation, which will not be repeated here.
  • the CU when the BroadcastAreaScope information element is set to CompleteSuccess, the CU can learn that each cell in the cells managed by the DU and requested to provide the second broadcast service can provide the second broadcast service for the first terminal and the second terminal.
  • the BroadcastAreaScope information element when the BroadcastAreaScope information element is set to PartialSuccess, the CU can learn that the cell corresponding to each cell identifier included in the BroadcastAreaScope information element can provide the second broadcast service for the first terminal and the second terminal.
  • the DU may send the ninth information to the CU but not send the tenth information. Accordingly, the CU may obtain the cell managed by the DU and providing the second broadcast service to the first terminal based on the ninth information.
  • the DU may send the tenth information to the CU but not the ninth information. Accordingly, the CU may learn, based on the tenth information, the cell managed by the DU that provides the second broadcast service to the first terminal and the second terminal.
  • the DU may send the ninth information and the tenth information to the CU, and accordingly, the CU may learn the cell managed by the DU that provides the second broadcast service for the first terminal based on the ninth information, learn the cell managed by the DU that provides the second broadcast service for the first terminal and the second terminal based on the tenth information, and learn the cell that provides the second broadcast service for the first terminal but does not provide the second broadcast service for the second terminal based on the ninth information and the tenth information.
  • the cell that provides the second broadcast service for the first terminal but does not provide the second broadcast service for the second terminal is the difference between the cell indicated by the tenth information and the cell indicated by the ninth information.
  • the ninth information and the tenth information may be carried in one message or in different messages, and there is no specific limitation on this.
  • the CU can be informed of the provision of different services by the DU. Furthermore, the CU can also be informed of the provision of different services by the DU for different terminals, which is beneficial for subsequent processing by the CU.
  • the present application also provides a communication method, which can be applied to a scenario where a CU is associated with multiple DUs under a CU-DU separation architecture, and is used to design a mobility-related scenario for the first terminal when the first terminal is introduced.
  • the DU managed by the CU includes a first DU and a second DU
  • the cell managed by the first DU includes a third cell
  • the cell managed by the second DU includes a second cell
  • the communication method includes the following steps:
  • the CU sends a third message to the second DU.
  • the second DU receives the third message from the CU.
  • the third message is a message associated with the second broadcast service.
  • the third message may include regional information, which indicates the area where the CU expects or requests to provide the second broadcast service.
  • the implementation of the third message can refer to the relevant description of the first message in step S2001 above, which will not be repeated here. It should be noted that step S2101 is an optional step, that is, the CU may not send the third message.
  • the second DU sends a fourth message to the CU.
  • the second DU receives the fourth message from the CU.
  • the fourth message is a message associated with the second broadcast service.
  • the fourth message may be a response message to the third message; in the case where the CU does not send the third message, the fourth message may be any message associated with the second broadcast service sent by the second DU to the CU.
  • the implementation of the fourth message can refer to the relevant description of the second message in the above step S2002, which will not be repeated here.
  • the fourth message includes the eleventh information and/or the twelfth information.
  • the eleventh information indicates the area where the second broadcast service is sent to the first terminal, or indicates the area where the broadcast session corresponding to the second broadcast service is sent to the first terminal.
  • the area where the second broadcast service is sent to the first terminal can also be understood as: the area where the second broadcast service is sent to the first terminal, or the cell that sends or provides the second broadcast service to the first terminal.
  • the eleventh information indicates an area where the second broadcast service is sent, and the area corresponds to the first terminal, or indicates an area where the broadcast session corresponding to the second broadcast service is sent, and the area corresponds to the first terminal.
  • sending can be understood as sending, successfully sending, already sent, providing, providing, successfully providing, already provided, etc.
  • the implementation of the eleventh information can refer to the relevant description of the ninth information in the above step S2002, which will not be repeated here.
  • the twelfth information indicates the area where the second broadcast service is sent to the second terminal, or indicates the area where the broadcast session corresponding to the second broadcast service is sent to the second terminal.
  • the area where the second broadcast service is sent to the second terminal can also be understood as: the area where the second broadcast service is sent to the second terminal, or the cell that sends or provides the second broadcast service to the second terminal.
  • the twelfth information indicates the area where the second broadcast service is sent, which corresponds to the second terminal, or indicates the area where the broadcast session corresponding to the second broadcast service is sent, which corresponds to the second terminal. Please refer to the first possible implementation of the above-mentioned tenth information, which will not be repeated here.
  • the twelfth information indicates the area where the second broadcast service is sent to the first terminal and/or the second terminal, or indicates the area where the broadcast session corresponding to the second broadcast service is sent to the first terminal and/or the second terminal.
  • the area where the second broadcast service is sent to the first terminal and/or the second terminal can also be understood as: the area where the second broadcast service is sent to the first terminal and/or the second terminal, or the cell that provides the second broadcast service to the first terminal and/or the second terminal.
  • the twelfth information indicates the area where the second broadcast service is sent, and the area is
  • the area corresponding to the first terminal and/or the second terminal may be used to indicate the area where the broadcast session corresponding to the second broadcast service is sent, and the area corresponds to the first terminal and/or the second terminal.
  • the second possible implementation of the tenth information may be referred to, and will not be described in detail here.
  • the twelfth information indicates the area where the second broadcast service is sent to the first terminal and the second terminal, or indicates the area where the broadcast session corresponding to the second broadcast service is sent to the first terminal and the second terminal.
  • the area where the second broadcast service is sent to the first terminal and the second terminal can also be understood as: the area where the second broadcast service is sent to the first terminal and the second terminal, or the cell that provides the second broadcast service to the first terminal and the second terminal.
  • the twelfth information indicates the area where the second broadcast service is sent, which corresponds to the first terminal and the second terminal, or indicates the area where the broadcast session corresponding to the second broadcast service is sent, which corresponds to the first terminal and the second terminal. Please refer to the second possible implementation of the above-mentioned twelfth information, which will not be repeated here.
  • the CU determines the fourth information according to the eleventh information or the twelfth information.
  • the fourth information indicates whether the second cell provides the second broadcast service to the first terminal (or the first type of terminal), and the second cell is a neighboring cell of the third cell.
  • the second broadcast service is a broadcast service provided by the third cell.
  • the second broadcast service is a broadcast service provided by the third cell, whether the second cell provides the second broadcast service to the first terminal, whether the second broadcast service provided by the third cell supports reception by the first terminal, and whether the second broadcast service provided by the third cell supports reception by the first terminal, the specific implementation of whether the first terminal is receiving the second broadcast service in the third cell can be referred to the relevant instructions in the above step S1201 and will not be repeated here.
  • the CU determines the fourth information based on the eleventh information.
  • the cell managed by the second DU indicated by the eleventh information is a cell that provides the second broadcast service to the first terminal, or the cell managed by the second DU not indicated by the eleventh information is a cell that does not provide the second broadcast service to the first terminal.
  • the second cell as a cell managed by the second DU as an example, if the cell managed by the second DU indicated by the eleventh information includes the second cell, the second cell provides the second broadcast service to the first terminal; if the cell managed by the second DU not indicated by the eleventh information includes the second cell, the second message does not provide the second broadcast service to the first terminal.
  • the CU determines the fourth information based on the twelfth information.
  • the cell managed by the second DU indicated by the twelfth information is a cell that provides the second broadcast service to the first terminal, or the cell managed by the second DU not indicated by the twelfth information is a cell that does not provide the second broadcast service to the first terminal.
  • the second cell Taking the second cell as an example of a cell managed by the second DU, if the cell managed by the second DU indicated by the twelfth information includes the second cell, the second cell provides the second broadcast service to the first terminal; if the cell managed by the second DU not indicated by the twelfth information includes the second cell, the second message does not provide the second broadcast service to the first terminal.
  • the CU may also determine the cell that provides the second broadcast service to the second terminal based on the twelfth information, or based on the eleventh information and the twelfth information.
  • the cell managed by the second DU indicated by the twelfth information is the cell that provides the second broadcast service to the second terminal, or the cell managed by the second DU not indicated by the twelfth information is the cell that does not provide the second broadcast service to the second terminal.
  • the second cell As the cell managed by the second DU as an example, if the cell managed by the second DU indicated by the twelfth information includes the second cell, the second cell provides the second broadcast service to the second terminal; if the cell managed by the second DU not indicated by the twelfth information includes the second cell, the second message does not provide the second broadcast service to the second terminal.
  • the cell that provides the second broadcast service to the second terminal is the difference set of the cell indicated by the twelfth information and the cell indicated by the eleventh information. If the difference set includes the second cell, the second cell provides the second broadcast service to the second terminal; if the difference set does not include the second cell, the second cell does not provide the second broadcast service to the second terminal.
  • this embodiment is only described by taking the CU associating the first DU and the second DU as an example.
  • the CU can be associated with more than two DUs, for example, the CU is also associated with a third DU.
  • the CU can obtain the provision of different services by each DU from each DU associated with it, thereby determining the fourth information according to the provision of services by each DU.
  • the CU sends the fourth information to the first DU.
  • the CU receives the fourth information from the first DU.
  • the implementation form of the fourth information may refer to the relevant description in the above step S1202, which will not be repeated here.
  • the fourth information may be carried in a neighbor cell service indication (mtch-NeighbourCell), a broadcast context establishment request message, or a broadcast context change request message.
  • the CU may also send seventh information to the first DU, where the seventh information indicates at least one neighboring area of the third cell, which provides one or more broadcast services provided by the third cell.
  • the neighboring area of the third cell indicated by the seventh information may be dedicated to the first type of terminal, or may be shared by the first type of terminal and the second type of terminal. Please refer to the relevant instructions in the above steps S1202 and S1902, which will not be repeated here.
  • the CU may also send eighth information to the first DU, where the eighth information indicates whether the second cell provides the second broadcast service to the second terminal (or the second type of terminal). Please refer to the relevant description in the above step S1902, which will not be repeated here.
  • the CU determines the neighboring cell list corresponding to the cell managed by the first DU according to the provision of different services by the second DU (the provision is indicated by the eleventh information and/or the twelfth information) as an example for explanation.
  • the CU can also determine the neighboring cell list corresponding to the cell managed by the first DU according to the provision of different services by the second DU (the provision is indicated by the eleventh information and/or the twelfth information).
  • the neighboring cell list corresponding to the cell managed by the second DU is determined, and the neighboring cell list is indicated to the second DU. Please refer to the above related description, which will not be repeated here.
  • the neighbor cell list indicated by the CU to the first DU may include the cells managed by the first DU
  • the neighbor cell list indicated to the second DU may also include the cells managed by the second DU.
  • the first DU sends a first MCCH message.
  • the first terminal receives the first MCCH message.
  • the first MCCH message includes the fourth information.
  • the first MCCH message also includes the seventh information.
  • the first DU may also send a second MCCH message, and the second MCCH message is used for the second type of terminal.
  • the second MCCH message includes the eighth information.
  • the second MCCH message may also include the fourth information, or include the fourth information and the seventh information. Please refer to the relevant description in the above step S1903, which will not be repeated here.
  • the first terminal determines whether the second cell provides the second broadcast service to the first terminal according to the fourth information. Please refer to the relevant description of the above step S1203, which will not be repeated here.
  • the second terminal may determine whether the second cell provides the second broadcast service to the second terminal according to the eighth information.
  • the relevant implementation of the first terminal may be referred to and will not be described in detail here.
  • the CU when the CU is associated with multiple DUs, the CU can perceive the situation that a certain DU (i.e., the second DU) provides broadcast services for different terminals through the broadcast area range indication information provided by the DU, so that the CU can indicate to another DU (i.e., the first DU) that the second DU provides broadcast services for different terminals, thereby enabling the first DU to send a first MCCH message to the first terminal to carry the fourth information, and then enabling the first terminal to reselect to the neighboring cell that provides the second broadcast service to the first terminal according to the fourth information when reselecting the cell, so that when the third cell is receiving the second broadcast service, the first terminal can improve the continuity of the second broadcast service, or when the first terminal does not receive the second broadcast service in the third cell but is interested in the second broadcast service, the first terminal can improve the success rate of receiving the second broadcast service.
  • the first terminal can improve the continuity of the second broadcast service, or when the first terminal does not receive the
  • the steps/functions implemented by the CU may be implemented by the CU-CP.
  • the method shown in FIG. 20 or FIG. 21 above may also be applicable to an ORAN scenario.
  • the embodiment of the present application further provides a communication method for designing a mobility-related scenario of the first terminal.
  • the communication method includes the following steps:
  • the network device determines fifth information.
  • the fifth information includes the first FSAI and a first frequency corresponding to the first FSAI.
  • the first frequency is a frequency for providing a broadcast service corresponding to the first FSAI to the first terminal (or a first type of terminal).
  • frequency point in the embodiments of the present application can also be called “frequency” or “frequency band”, and the two can be interchangeable. They are explained uniformly here and will not be repeated in subsequent embodiments.
  • the first frequency is a frequency for providing a broadcast service corresponding to the first FSAI for the first terminal, which can be understood as: the first frequency is a frequency for providing/will provide/can provide a broadcast service corresponding to the first FSAI for the first terminal.
  • the fifth information further includes a second frequency corresponding to the first FSAI, where the second frequency is a frequency for providing a broadcast service corresponding to the first FSAI to the second terminal.
  • the second frequency is a frequency for providing the broadcast service corresponding to the first FSAI for the second terminal, which can be understood as: the second frequency is a frequency for providing/will provide/can provide the broadcast service corresponding to the first FSAI for the second terminal.
  • the network device can configure two frequency points for the FSAI.
  • One frequency point is a frequency point for providing a broadcast service corresponding to the FSAI to the first terminal
  • the other frequency point is a frequency point for providing a broadcast service corresponding to the FSAI to the second terminal.
  • the two frequency points configured by the network device for the same FSAI can be the same or different, and this application does not make specific restrictions on this.
  • S1302 The network device sends fifth information.
  • the first terminal receives the fifth information.
  • the fifth information may be carried in system information of the cell.
  • the system information may be SIB21.
  • the first terminal sets the cell reselection priority of the first frequency point to the highest priority.
  • the first terminal may determine the FSAI corresponding to the broadcast service that it is receiving, expecting to receive, or is interested in, based on the MBS USD. If the FSAI is the first FSAI, that is, the broadcast service corresponding to the first FSAI is the broadcast service that the first terminal is receiving, expecting to receive, or is interested in, then the first terminal may set the cell reselection priority of the first frequency point to the highest priority. That is, when the first terminal reselects a cell, it may be considered that the first frequency point has the highest priority.
  • the MBS USD of the first terminal indicates the FSAI corresponding to the broadcast service that the first terminal is receiving, expecting to receive, or is interested in, and the same FSAI is included in the information (such as system information) sent by the network device, then the first terminal can set the priority of the specific frequency point corresponding to the FSAI in the information to the highest priority.
  • the specific frequency point is to provide the first terminal with the broadcast service that it is receiving or expecting to receive. The frequencies of the broadcast services received or of interest.
  • the network device can provide the first terminal with the frequency of the broadcast service corresponding to the FSAI indication, so that the first terminal can set the cell reselection priority of the frequency to the highest priority, thereby increasing the probability of the first terminal reselecting to the cell on the first frequency, so that the first terminal can improve the continuity of the broadcast service when the current cell is receiving the broadcast service, or improve the reception success rate of the broadcast service when the first terminal is not receiving the broadcast service in the current cell but is interested in or expects to receive the broadcast service.
  • an embodiment of the present application further provides a communication method related to the mobility of a first terminal. As shown in FIG. 14 , the communication method includes the following steps:
  • the first terminal obtains sixth information.
  • the sixth information includes a first frequency point.
  • the first frequency point is a frequency point corresponding to the first FSAI, or the first frequency point is a frequency point corresponding to the third broadcast service.
  • the third broadcast service is a broadcast service that the first terminal is currently receiving, is interested in, or expects to receive.
  • the first FSAI is the FSAI corresponding to the third broadcast service.
  • the first frequency point is a frequency point for providing the third broadcast service to the first terminal.
  • the first frequency point is a frequency point for providing the third broadcast service to the first terminal, which can be understood as: the first frequency point is a frequency point that may provide/will provide/can provide the third broadcast service to the first terminal.
  • the sixth information can be understood as the fifth information, that is, a possible implementation of the sixth information is the fifth information.
  • the above step S1302 can be understood as the implementation of the first terminal acquiring the sixth information. That is, the sixth information can be carried in the system information of the cell (such as SIB21).
  • the sixth information may be located in the MBS USD, that is, the sixth information may be information in the MBS USD.
  • the MBS USD may include the correspondence between the third broadcast service and the first frequency point.
  • the MBS USD may also include the FSAI (i.e., the first FSAI) corresponding to the third broadcast service.
  • the MBS USD may not include the first FSAI.
  • the MBS USD may be provided by a third-party application function network element to the first terminal. The third party may be understood as the provider of the third broadcast service.
  • the sixth information may be pre-configuration information sent by the above-mentioned application function network element to the first terminal, that is, the sixth information may not be located in the MBS USD, and this application does not make any specific limitation on this.
  • the sixth information further includes a second frequency point, the second frequency point is a frequency point corresponding to the second FSAI, or the second frequency point is a frequency point corresponding to the third broadcast service.
  • the second FSAI is a FSAI corresponding to the third broadcast service
  • the second frequency point is a frequency point providing the third broadcast service for the second terminal.
  • the third broadcast service may correspond to the first FSAI and the second FSAI.
  • the first FSAI and the second FSAI may be the same or different.
  • the first FSAI corresponds to the first frequency point
  • the second FSAI corresponds to the second frequency point.
  • the first frequency point may be/will be/can provide the third broadcast service for the first terminal
  • the second frequency point may be/will be/can provide the third broadcast service for the second terminal.
  • the first terminal sets the cell reselection priority of the first frequency point to the highest priority.
  • the first terminal may set the cell reselection priority of the first frequency point to the highest priority. That is, when the first terminal reselects the cell, it may be considered that the first frequency point has the highest priority.
  • the first terminal can set the priority of the specific frequency point corresponding to the FSAI in the information to the highest priority.
  • the specific frequency point is the frequency point that provides the first terminal with the broadcast service that it is receiving, expecting to receive, or is interested in.
  • the first terminal may set the cell reselection priority of the first frequency point corresponding to the third broadcast service in the MBS USD to the highest priority.
  • the first terminal may set the cell reselection priority of the first frequency corresponding to the third broadcast service in the MBS USD to the highest priority.
  • FSAI system information carrying FSAI
  • the network device can provide the frequency of the broadcast service to the first terminal in response to the broadcast service indication, so that the first terminal can set the cell reselection priority of the frequency to the highest priority, thereby increasing the probability of the first terminal reselecting to the cell on the first frequency, so that the first terminal can improve the continuity of the broadcast service when the current cell is receiving the broadcast service, or improve the reception success rate of the broadcast service when the first terminal is not receiving the broadcast service in the current cell but is interested in or expects to receive the broadcast service.
  • the network device can send the information to the RedCap terminal and the eRedCap terminal respectively, and the instructions of the information sent to the RedCap terminal and the eRedCap terminal respectively can be the same or different.
  • the network device can send the same information to the RedCap terminal and the eRedCap terminal. Please refer to the above description of the network device sending the first information to the RedCap terminal and the eRedCap terminal when there are RedCap terminals and eRedCap terminals in the system, which will not be repeated here.
  • FIG. 7, FIG. 10, FIG. 12, FIG. 13, or FIG. 14 can be executed separately, that is, the execution of a method does not depend on other methods.
  • at least two of the methods shown in FIG. 7, FIG. 10, FIG. 12, FIG. 13, or FIG. 14 can be combined with each other to form a new embodiment, and this application does not specifically limit this.
  • the method described in the above embodiments of the present application may also be appropriately modified to be applicable to a multicast service or a multicast service.
  • the broadcast service in the above embodiments may be replaced by a multicast service or a multicast service, and the configuration associated with the broadcast service may be replaced by a configuration associated with the corresponding multicast service or a multicast service.
  • other modifications may be made to be applicable to a multicast service or a multicast service, and the present application does not specifically limit this.
  • the methods and/or steps implemented by the network device can also be implemented by components that can be used for the network device (such as a processor, chip, chip system, circuit, logic module, or software); the methods and/or steps implemented by the terminal can also be implemented by components that can be used for the terminal (such as a processor, chip, chip system, circuit, logic module, or software).
  • the above mainly introduces the scheme provided by the present application. Accordingly, the present application also provides a communication device, which is used to implement the above various methods.
  • the communication device can be a network device in the above method embodiment, or a device including the above network device, or a component that can be used for the network device, such as a chip or a chip system; or, the communication device can be a terminal in the above method embodiment, or a device including the above terminal, or a component that can be used for the terminal, such as a chip or a chip system.
  • the communication device includes hardware structures and/or software modules corresponding to the execution of each function.
  • the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed in the form of hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.
  • the embodiment of the present application can divide the functional modules of the communication device according to the above method embodiment.
  • each functional module can be divided according to each function, or two or more functions can be integrated into one processing module.
  • the above integrated module can be implemented in the form of hardware or in the form of software functional modules. It should be noted that the division of modules in the embodiment of the present application is schematic and is only a logical function division. There may be other division methods in actual implementation.
  • FIG15 shows a schematic diagram of the structure of a network device 150.
  • the network device 150 includes a processing module 1501 and a transceiver module 1502.
  • the network device 150 may also include a storage module (not shown in FIG. 15 ) for storing program instructions and data.
  • the transceiver module 1502 which may also be referred to as a transceiver unit, is used to implement the sending and/or receiving functions.
  • the transceiver module 1502 may be composed of a transceiver circuit, a transceiver, a transceiver or a communication interface.
  • the transceiver module 1502 may include a receiving module and a sending module, which are respectively used to execute the receiving and sending steps performed by the network device in the above-mentioned method embodiment, and/or used to support other processes of the technology described in this document; the processing module 1501 may be used to execute the processing steps (such as determination, etc.) performed by the network device in the above-mentioned method embodiment, and/or used to support other processes of the technology described in this document.
  • the processing module 1501 is used to determine the first information, where the first information indicates whether the first cell supports providing broadcast services to the first terminal, and the first terminal is a reduced capability RedCap terminal and/or an enhanced reduced capability eRedCap terminal; the transceiver module 1502 is used to send the first information.
  • the first information indicates whether the first cell supports providing broadcast services to the first terminal, including: the first information indicates that the first cell supports at least one broadcast service provided to the first terminal, and/or the first cell does not support at least one broadcast service provided to the first terminal.
  • the first information indicates that the first cell supports providing broadcast services to the first terminal; or, when the first cell supports providing all broadcast services of the first cell to the first terminal, the first information indicates that the first cell supports providing broadcast services to the first terminal.
  • the transceiver module 1502 is further used to send second information, where the second information indicates that the first cell supports at least one broadcast service provided to the first terminal, and/or that the first cell does not support at least one broadcast service provided to the first terminal.
  • the transceiver module 1502 is further configured to: First configuration information is sent, where the first configuration information is configuration information of a first broadcast service for a first terminal.
  • the processing module 1501 is used to determine the third information; the third information indicates whether the second terminal is allowed to receive the multicast broadcast service control channel MCCH message provided to the first terminal, or the third information indicates whether the second terminal is allowed to receive the broadcast service provided to the first terminal; the first terminal includes a reduced capability RedCap terminal and/or an enhanced reduced capability eRedCap terminal, and the maximum operating bandwidth of the second terminal is greater than the maximum operating bandwidth of the first terminal; the transceiver module 1502 is used to send the third information.
  • the processing module 1501 is used to determine the fourth information, where the fourth information indicates whether the second cell provides a second broadcast service to the first terminal, the first terminal is a reduced-capability RedCap terminal and/or an enhanced reduced-capability eRedCap terminal, the second broadcast service is a broadcast service provided by the third cell, and the second cell is a neighboring cell of the third cell; the transceiver module 1502 is used to send the fourth information.
  • the transceiver module 1502 is also used to send seventh information, where the seventh information indicates at least one neighboring cell of the third cell, which provides one or more broadcast services provided by the third cell, and at least one neighboring cell includes the second cell, and the one or more broadcast services provided by the third cell include the second broadcast service.
  • the DU managed by the CU includes a first DU and a second DU, the third cell is a cell managed by the first DU, and the second cell is a cell managed by the second DU;
  • the transceiver module 1502 is also used to receive the eleventh information, and the eleventh information is used to indicate the cell managed by the second DU that provides the second broadcast service to the first terminal;
  • the processing module 1501 is used to determine the fourth information, including: the processing module 1501 is used to determine the fourth information based on the eleventh information;
  • the transceiver module 1502 is used to send the fourth information, including: the transceiver module 1502 is used to send the fourth information to the first DU.
  • the processing module 1501 is used to determine the fifth information, where the fifth information includes a first frequency selection area identifier FSAI and a first frequency corresponding to the first FSAI, where the first frequency is a frequency for providing a broadcast service corresponding to the first FSAI to the first terminal, and the first terminal includes a reduced capability RedCap terminal and/or an enhanced reduced capability eRedCap terminal; the transceiver module 1502 is used to send the fifth information.
  • the network device 150 is presented in the form of dividing various functional modules in an integrated manner.
  • the "module” here may refer to a specific application-specific integrated circuit (ASIC), a circuit, a processor and a memory that executes one or more software or firmware programs, an integrated logic circuit, and/or other devices that can provide the above functions.
  • ASIC application-specific integrated circuit
  • the network device 150 may take the form of the communication apparatus 200 shown in FIG. 2 .
  • the function/implementation process of the processing module 1501 in FIG15 can be implemented by the processor 201 in the communication device 200 shown in FIG2 calling the computer execution instructions stored in the memory 203.
  • the function/implementation process of the transceiver module 1502 in FIG15 can be implemented by the communication interface 204 in the communication device 200 shown in FIG2.
  • the function/implementation process of the transceiver module 1502 can be implemented through the input and output interface (or communication interface) of the chip or the chip system, and the function/implementation process of the processing module 1501 can be implemented through the processor (or processing circuit) of the chip or the chip system.
  • the network device 150 provided in this embodiment can execute the above method, the technical effects that can be obtained can refer to the above method embodiments and will not be repeated here.
  • Figure 16 shows a schematic diagram of the structure of a terminal 160.
  • the terminal 160 includes a processing module 1601 and a transceiver module 1602.
  • the terminal 160 can implement the functions of the first terminal or the second terminal in the above method embodiment.
  • the terminal 160 may further include a storage module (not shown in FIG. 16 ) for storing program instructions and data.
  • the transceiver module 1602 which may also be referred to as a transceiver unit, is used to implement the sending and/or receiving functions.
  • the transceiver module 1602 may be composed of a transceiver circuit, a transceiver, a transceiver or a communication interface.
  • the transceiver module 1602 may include a receiving module and a sending module, which are respectively used to execute the receiving and sending steps performed by the terminal in the above-mentioned method embodiments, and/or used to support other processes of the technology described in this document; the processing module 1601 may be used to execute the processing steps (such as determination, etc.) performed by the terminal in the above-mentioned method embodiments, and/or used to support other processes of the technology described in this document.
  • terminal 160 when the terminal 160 is used to implement the function of the first terminal:
  • the transceiver module 1602 is configured to receive first information, where the first information indicates whether the first cell supports providing a broadcast service to the first terminal.
  • the terminal is a reduced capability RedCap terminal and/or an enhanced reduced capability eRedCap terminal; the processing module 1601 is used to determine whether it is possible to receive the broadcast service provided by the first cell in a broadcast manner according to the first information.
  • the first information indicates whether the first cell supports providing broadcast services to the first terminal, including: the first information indicates that the first cell supports at least one broadcast service of the first cell provided to the first terminal, and/or the first cell does not support at least one broadcast service of the first cell provided to the first terminal.
  • the first information indicates that the first cell supports providing broadcast services to the first terminal; or, when the first cell supports providing all broadcast services of the first cell to the first terminal, the first information indicates that the first cell supports providing broadcast services to the first terminal.
  • the transceiver module 1602 is further used to receive second information, where the second information indicates that the first cell supports at least one broadcast service of the first cell provided to the first terminal, and/or that the first cell does not support at least one broadcast service of the first cell provided to the first terminal.
  • the transceiver module 1602 when the first information indicates that the first cell supports providing a first broadcast service to the first terminal, the transceiver module 1602 is also used to receive first configuration information, where the first configuration information is configuration information for the first broadcast service of the first terminal; the transceiver module 1602 is also used to receive the first broadcast service according to the first configuration information.
  • the transceiver module 1602 is further used to initiate a unicast reception request, and the unicast reception request is used to request to receive the first broadcast service in unicast mode.
  • terminal 160 when the terminal 160 is used to implement the function of the second terminal:
  • the transceiver module 1602 is used to receive the third information, where the third information indicates whether the second terminal is allowed to receive the multicast broadcast service control channel MCCH message provided to the first terminal, or the third information indicates whether the second terminal is allowed to receive the broadcast service provided to the first terminal;
  • the first terminal includes a reduced capability RedCap terminal and/or an enhanced reduced capability eRedCap terminal, and the maximum operating bandwidth of the second terminal is greater than the maximum operating bandwidth of the first terminal;
  • the processing module 1601 is used to determine whether to receive the multicast broadcast service control channel MCCH message provided to the first terminal based on the third information, or determine whether to receive the broadcast service provided to the first terminal based on the third information.
  • terminal 160 when the terminal 160 is used to implement the function of the first terminal:
  • the transceiver module 1602 is used to receive fourth information, where the fourth information indicates whether the second cell provides a second broadcast service to the first terminal, the first terminal is a reduced-capability RedCap terminal and/or an enhanced reduced-capability eRedCap terminal, the second broadcast service is a broadcast service provided by a third cell, and the second cell is a neighboring cell of the third cell; the processing module 1601 is used to determine whether the second cell provides a second broadcast service to the first terminal based on the fourth information.
  • the transceiver module 1602 is further used to initiate a unicast reception request, and the unicast reception request is used to request to receive the second broadcast service in unicast mode.
  • the transceiver module 1602 is also used to receive seventh information, where the seventh information indicates at least one neighboring cell of the third cell, which provides one or more broadcast services provided by the third cell, and at least one neighboring cell includes the second cell, and the one or more broadcast services provided by the third cell include the second broadcast service.
  • the processing module 1601 is used to determine whether the second cell provides the second broadcast service to the first terminal according to the fourth information, including: the processing module 1601 is used to determine whether the second cell provides the second broadcast service to the first terminal according to the fourth information and the seventh information.
  • terminal 160 when the terminal 160 is used to implement the function of the first terminal:
  • the processing module 1601 is used to obtain sixth information through the transceiver module 1602, where the sixth information includes a first frequency point, where the first frequency point is a frequency point corresponding to a first frequency selection area identifier FSAI, or the first frequency point is a frequency point corresponding to a third broadcast service; the processing module 1601 is also used to set the cell reselection priority of the first frequency point to the highest priority, where the third broadcast service is a broadcast service that the first terminal is receiving or interested in, the first FSAI is the FSAI corresponding to the third broadcast service, the first frequency point is a frequency point that provides the third broadcast service to the first terminal, and the first terminal is a reduced capability RedCap terminal and/or an enhanced reduced capability eRedCap terminal.
  • the sixth information also includes a second frequency, where the second frequency is a frequency corresponding to the second FSAI, or the second frequency is a frequency corresponding to the third broadcast service.
  • the second FSAI is the FSAI corresponding to the third broadcast service
  • the second frequency is a frequency for providing the third broadcast service to the second terminal
  • the maximum operating bandwidth of the second terminal is greater than the maximum operating bandwidth of the first terminal.
  • the terminal 160 is presented in the form of dividing various functional modules in an integrated manner.
  • the "module” here may refer to an ASIC, a circuit, a processor and a memory that executes one or more software or firmware programs, an integrated logic circuit, and/or other devices that can provide the above functions.
  • the terminal 160 may take the form of the communication device 200 shown in FIG. 2 .
  • the function/implementation process of the processing module 1601 in FIG16 can be implemented by the processor 201 in the communication device 200 shown in FIG2 calling the computer execution instructions stored in the memory 203.
  • the function/implementation process of the transceiver module 1602 in FIG16 can be implemented by the communication interface 204 in the communication device 200 shown in FIG2.
  • the function/implementation process of the transceiver module 1602 can be implemented through the input and output interface (or communication interface) of the chip or the chip system, and the function/implementation process of the processing module 1601 can be implemented through the processor (or processing circuit) of the chip or the chip system.
  • the terminal 160 provided in this embodiment can execute the above method, the technical effects that can be obtained can refer to the above method embodiments and will not be repeated here.
  • the network device or terminal described in the embodiments of the present application can be implemented using the following: one or more field programmable gate arrays (FPGA), programmable logic devices (PLD), controllers, state machines, gate logic, discrete hardware components, any other suitable circuits, or any combination of circuits that can perform the various functions described throughout the present application.
  • FPGA field programmable gate arrays
  • PLD programmable logic devices
  • state machines gate logic, discrete hardware components, any other suitable circuits, or any combination of circuits that can perform the various functions described throughout the present application.
  • the terminal or network device described in the embodiment of the present application can be implemented by a general bus architecture.
  • Figure 17 is a structural diagram of a communication device 1700 provided in an embodiment of the present application, and the communication device 1700 includes a processor 1701 and a transceiver 1702.
  • the communication device 1700 can be a terminal, or a chip therein; or, the communication device 1700 can be a network device, or a chip or module therein.
  • Figure 17 only shows the main components of the communication device 1700.
  • the communication device may further include a memory 1703, and an input and output device (not shown in the figure).
  • the processor 1701 is mainly used to process the communication protocol and communication data, and to control the entire communication device, execute the software program, and process the data of the software program.
  • the memory 1703 is mainly used to store the software program and data.
  • the transceiver 1702 may include a radio frequency circuit and an antenna.
  • the radio frequency circuit is mainly used for converting baseband signals and radio frequency signals and processing radio frequency signals.
  • the antenna is mainly used to transmit and receive radio frequency signals in the form of electromagnetic waves.
  • Input and output devices, such as touch screens, display screens, keyboards, etc., are mainly used to receive data input by users and output data to users.
  • the processor 1701, the transceiver 1702, and the memory 1703 may be connected via a communication bus.
  • the processor 1701 can read the software program in the memory 1703, interpret and execute the instructions of the software program, and process the data of the software program.
  • the processor 1701 performs baseband processing on the data to be sent, and outputs the baseband signal to the RF circuit.
  • the RF circuit performs RF processing on the baseband signal and then sends the RF signal outward in the form of electromagnetic waves through the antenna.
  • the RF circuit receives the RF signal through the antenna, converts the RF signal into a baseband signal, and outputs the baseband signal to the processor 1701.
  • the processor 1701 converts the baseband signal into data and processes the data.
  • the RF circuit and antenna may be arranged independently of the processor performing baseband processing.
  • the RF circuit and antenna may be arranged independently of the communication device in a remote manner.
  • an embodiment of the present application further provides a communication device, which includes a processor for implementing a method in any of the above method embodiments.
  • the communication device further includes a memory.
  • the memory is used to store necessary computer programs and data.
  • the computer program may include instructions, and the processor may call the instructions in the computer program stored in the memory to instruct the communication device to execute the method in any of the above method embodiments.
  • the memory may not be in the communication device.
  • the communication device also includes an interface circuit, which is a code/data read/write interface circuit, which is used to receive computer execution instructions (computer execution instructions are stored in a memory, may be read directly from the memory, or may pass through other devices) and transmit them to the processor.
  • an interface circuit which is a code/data read/write interface circuit, which is used to receive computer execution instructions (computer execution instructions are stored in a memory, may be read directly from the memory, or may pass through other devices) and transmit them to the processor.
  • the communication device further includes a communication interface, and the communication interface is used to communicate with a module outside the communication device.
  • the communication device can be a chip or a chip system.
  • the communication device can be composed of chips, or it can include chips and other discrete devices.
  • the embodiments of the present application do not specifically limit this.
  • the present application also provides a computer-readable storage medium on which a computer program or instruction is stored.
  • a computer program or instruction is stored on which a computer program or instruction is stored.
  • the present application also provides a computer program product, which implements the functions of any of the above method embodiments when executed by a computer.
  • the systems, devices and methods described in this application can also be implemented in other ways.
  • the embodiments are merely illustrative.
  • the division of the units is merely a logical function division. There may be other divisions in actual implementation.
  • multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, which may be electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, i.e., they may be located in one place, or they may be distributed over multiple network units.
  • the components shown as units may or may not be physical units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above embodiments it can be implemented in whole or in part by software, hardware, firmware or any combination thereof.
  • a software program it can be implemented in whole or in part in the form of a computer program product.
  • the computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes (or functions) described in the embodiments of the present application are implemented.
  • the computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device.
  • the computer instructions may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from a website site, computer, server or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) mode to another website site, computer, server or data center.
  • the computer-readable storage medium may be any available medium that a computer can access or may contain one or more servers, data centers and other data storage devices that can be integrated with the medium.
  • the available medium may be a magnetic medium (e.g., a floppy disk, a hard disk, a magnetic tape), an optical medium (e.g., a DVD), or a semiconductor medium (e.g., a solid state drive (SSD)).
  • the computer may include the aforementioned device.

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Abstract

一种通信方法及装置。该方法包括：网络设备确定第一信息，并发送第一信息。其中，第一信息指示第一小区是否支持向第一终端提供广播业务，该第一终端为能力降低RedCap终端和/或增强型能力降低eRedCap终端。第一终端接收第一信息，并根据第一信息确定是否能够通过广播方式接收第一小区提供的广播业务。由于第一终端可以获知是否能够通过广播方式接收第一小区提供的广播业务，因此，在第一终端获知不能通过广播方式接收第一小区提供的广播业务的情况下，第一终端可以采取措施(如发起单播连接请求)以尽可能的接收第一小区提供的广播业务，从而提升广播业务的覆盖，以及提升第一终端用户的用户体验。

Description

一种通信方法及装置
本申请要求于2023年04月07日提交国家知识产权局、申请号为202310404228.6、申请名称为“一种通信方法及装置”的中国专利申请的优先权，以及要求于2023年09月25日提交国家知识产权局、申请号为202311248414.1、申请名称为“一种通信方法及装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请实施例涉及通信领域，尤其涉及一种通信方法及装置。
背景技术
多播广播业务(multicast and broadcast service，MBS)是面向多个终端的业务，从端到端的管理控制流程的角度，MBS业务可以分为组播业务和广播业务。针对广播业务，目前引入两个逻辑信道：MBS控制信道(MBS control channel，MCCH)和MBS业务信道(MBS traffic channel，MTCH)。
其中，MCCH用于传输控制信息，包含该控制信息的消息可以称为MCCH消息，控制信息可以包括MTCH的配置信息。MTCH用于传输广播业务的数据。MCCH消息周期性传输，其配置信息承载于系统信息块(systeminformation block，SIB)中，比如SIB20。
为了节省成本，第三代合作伙伴计划(3rd generation partnership project，3GPP)定义了能力降低(reduced capability，RedCap)终端和增强型RedCap(enhanced，eRedCap)终端。二者支持的最大基带带宽分别为20兆赫兹(mega hertz，MHz)和5MHz，这意味着对于一些业务来说下行信息被调度在20MHz或5MHz以内传输时，才能被RedCap终端或eRedCap终端接收。
因此，在引入RedCap终端或eRedCap终端的场景下，目前的MBS业务的传输配置等可能不再适用。
发明内容
本申请提供一种通信方法及装置，可以使得第一终端尽可能的接收广播业务，提升广播业务的覆盖和用户体验。
第一方面，提供了一种通信方法，该方法可以由网络设备执行，也可以由网络设备的部件，例如网络设备的处理器、芯片、或芯片系统等执行，还可以由能实现全部或部分网络设备功能的逻辑模块或软件实现。该方法包括：确定第一信息，并发送第一信息。其中，第一信息指示第一小区是否支持向第一终端提供广播业务，该第一终端为能力降低RedCap终端和/或增强型能力降低eRedCap终端。
基于该方案，网络设备发送第一信息指示第一小区是否支持向第一终端提供广播业务，使得第一终端能够根据第一信息获知是否能够通过广播方式接收第一小区提供的广播业务。如第一小区支持向第一终端提供广播业务的情况下，第一终端能够通过广播方式接收第一小区提供的广播业务，第一小区不支持向第一终端提供广播业务的情况下，第一终端不能通过广播方式接收第一小区提供的广播业务。由于第一终端可以获知是否能够通过广播方式接收第一小区提供的广播业务，因此，在第一终端获知不能通过广播方式接收第一小区提供的广播业务的情况下，第一终端可以采取措施(如发起单播连接请求)以尽可能的接收第一小区提供的广播业务，从而提升广播业务的覆盖，以及提升第一终端用户的用户体验。
在一种可能的设计中，第一信息指示第一小区是否支持向第一终端提供广播业务，包括：第一信息指示第一小区支持向第一终端提供的至少一个广播业务，和/或，第一小区不支持向第一终端提供的至少一个广播业务。基于该可能的设计，能够以业务为粒度指示第一小区支持或不支持向第一终端提供的广播业务。
在一种可能的设计中，第一信息携带在多播广播业务控制信道MCCH消息中。
在一种可能的设计中，第一小区支持向第一终端提供第一小区的至少一个广播业务的情况下，第一信息指示第一小区支持向第一终端提供广播业务；或者，第一小区支持向第一终端提供第一小区的所有广播业务的情况下，第一信息指示第一小区支持向第一终端提供广播业务。基于该可能的设计，能够以小区为粒度指示第小区是否支持向第一终端提供广播业务。
在一种可能的设计中，该方法还包括：发送第二信息，第二信息指示第一小区支持向第一终端提供的至少一个广播业务，和/或，第一小区不支持向第一终端提供的至少一个广播业务。
基于该第二信息，可以使得第一终端获知第一小区支持向其提供哪些广播业务，和/或，第一小区不支持向其提供哪些业务，从而确定第一小区是否支持向其提供感兴趣或正在接收的广播业务，进而在确定第 一小区不支持向其提供该广播业务时采取措施(如发起单播连接请求)以尽可能的接收该广播业务。
在一种可能的设计中，第二信息携带在MCCH消息中。
在一种可能的设计中，第一信息携带在第一小区的系统信息中。
在一种可能的设计中，第一信息指示第一小区支持向第一终端提供第一广播业务的情况下，该方法还包括：发送第一配置信息，第一配置信息为用于第一终端的第一广播业务的配置信息。
第二方面，提供了一种通信方法，该方法可以由第一终端执行，也可以由第一终端的部件，例如第一终端的处理器、芯片、或芯片系统等执行，还可以由能实现全部或部分第一终端功能的逻辑模块或软件实现。该方法包括：接收第一信息，该第一信息指示第一小区是否支持向第一终端提供广播业务，第一终端为能力降低RedCap终端和/或增强型能力降低eRedCap终端。根据第一信息确定是否能够通过广播方式接收第一小区提供的广播业务。其中，第二方面所带来的技术效果可参考上述第一方面所带来的技术效果，在此不再赘述。
在一种可能的设计中，第一信息指示第一小区是否支持向第一终端提供广播业务，包括：第一信息指示第一小区支持向第一终端提供的至少一个广播业务，和/或，第一小区不支持向第一终端提供的至少一个广播业务。
在一种可能的设计中，第一小区支持向第一终端提供第一小区的至少一个广播业务的情况下，第一信息指示第一小区支持向第一终端提供广播业务；或者，第一小区支持向第一终端提供第一小区的所有广播业务的情况下，第一信息指示第一小区支持向第一终端提供广播业务。
在一种可能的设计中，该方法还包括：接收第二信息，第二信息指示第一小区支持向第一终端提供的至少一个广播业务，和/或，第一小区不支持向第一终端提供的至少一个广播业务。
在一种可能的设计中，第一信息指示第一小区支持向第一终端提供第一广播业务的情况下，该方法还包括：接收第一配置信息，第一配置信息为用于第一终端的第一广播业务的配置信息；根据第一配置信息接收第一广播业务。
在一种可能的设计中，第一信息指示第一小区不支持向第一终端提供第一广播业务的情况下，该方法还包括：发起单播接收请求，单播接收请求用于请求通过单播方式接收第一广播业务。
基于该可能的设计，在第一终端获知不能通过广播方式接收第一小区提供的第一广播业务的情况下，第一终端可以发起单播连接请求，以请求通过单播方式接收第一广播业务，从而提升第一广播业务的覆盖，以及提升第一终端用户的用户体验。
第三方面，提供了一种通信方法，该方法可以由网络设备执行，也可以由网络设备的部件，例如网络设备的处理器、芯片、或芯片系统等执行，还可以由能实现全部或部分网络设备功能的逻辑模块或软件实现。该方法包括：确定第三信息，并发送第三信息。其中，第三信息指示是否允许第二终端接收向第一终端提供的多播广播业务控制信道MCCH消息，或者，第三信息指示是否允许第二终端接收向第一终端提供的广播业务。第一终端包括能力降低RedCap终端和/或增强型能力降低eRedCap终端，第二终端的最大工作带宽大于第一终端的最大工作带宽。
基于该方案，网络设备发送第三信息指示是否允许第二终端接收向第一终端提供的MCCH消息或广播业务。在第三信息指示不允许第二终端接收向第一终端提供的MCCH消息或广播业务的情况下，可以节省第二终端的功耗。
第四方面，提供了一种通信方法，该方法可以由第二终端执行，也可以由第二终端的部件，例如第二终端的处理器、芯片、或芯片系统等执行，还可以由能实现全部或部分第二终端功能的逻辑模块或软件实现。该方法包括：接收第三信息，第三信息指示是否允许第二终端接收向第一终端提供的多播广播业务控制信道MCCH消息，或者，第三信息指示是否允许第二终端接收向第一终端提供的广播业务；根据第三信息确定是否接收向第一终端提供的多播广播业务控制信道MCCH消息，或者，根据第三信息确定是否接收向第一终端提供的广播业务。其中，第一终端包括能力降低RedCap终端和/或增强型能力降低eRedCap终端，第二终端的最大工作带宽大于第一终端的最大工作带宽。其中，第四方面所带来的技术效果可参考上述第三方面所带来的技术效果，在此不再赘述。
结合第三方面或第四方面，在一种可能的设计中，第二信息携带在以下任意一项中：系统信息、下行控制信息DCI、或MCCH消息。
第五方面，提供了一种通信方法，该方法可以由网络设备执行，也可以由网络设备的部件，例如网络设备的处理器、芯片、或芯片系统等执行，还可以由能实现全部或部分网络设备功能的逻辑模块或软件实现。该方法包括：确定第四信息，并发送第四信息。其中，第四信息指示第二小区是否向第一终端提供第 二广播业务。第一终端为能力降低RedCap终端和/或增强型能力降低eRedCap终端，第二广播业务为第三小区提供的广播业务，第二小区为第三小区的邻区。第三小区属于该网络设备，或者，该网络设备为第三小区所述的网络设备。
基于该方案，网络设备发送第四信息指示第三小区的邻区是否向第一终端提供第二广播业务。能够使得第一终端在小区重选时根据第四信息重选到向第一终端提供第二广播业务的邻区，从而第一终端在第三小区正在接收第二广播业务的情况下，能够提升第二广播业务的连续性，或者第一终端在第三小区未接收第二广播业务，但对第二广播业务感兴趣的情况下，能够提高第二广播业务的接收成功率。
在一种可能的设计中，该方法还可以包括：发送第七信息，第七信息指示第三小区的至少一个邻区，邻区提供第三小区提供的一个或多个广播业务，至少一个邻区包括第二小区，第三小区提供的一个或多个广播业务包括第二广播业务。
在一种可能的设计中，该邻区向第一终端提供第三小区提供的一个或多个广播业务，或者，该邻区向第一终端和第二终端提供第三小区提供的一个或多个广播业务，第二终端的最大工作带宽大于第一终端的最大工作带宽。
在一种可能的设计中，上述网络设备可以为集中式单元CU。该场景下，发送第四信息包括：向分布式单元DU发送第四信息。
基于该可能的设计，CU向DU发送第四信息，使得DU能够向终端设备指示第三小区的邻区是否向第一终端提供第二广播业务。
在一种可能的设计中，上述网络设备可以为集中式单元CU，该CU管理第一DU和第二DU，第三小区为第一DU管理的小区，第二小区为第二DU管理的小区。该场景下，确定第四信息，包括：接收来自第二DU的第十一信息，根据第十一信息确定第四信息；其中，第十一信息用于指示第二DU管理的小区中为第一终端提供第二广播业务的小区。此外，发送第四信息，包括：向第一DU发送第四信息。
第六方面，提供了一种通信方法，该方法可以由第一终端执行，也可以由第一终端的部件，例如第一终端的处理器、芯片、或芯片系统等执行，还可以由能实现全部或部分第一终端功能的逻辑模块或软件实现。该方法包括：接收第四信息，第四信息指示第二小区是否向第一终端提供第二广播业务，根据第四信息确定第二小区是否向第一终端提供第二广播业务。其中，第一终端为能力降低RedCap终端和/或增强型能力降低eRedCap终端，第二广播业务为第三小区提供的广播业务，第二小区为第三小区的邻区。其中，第六方面所带来的技术效果可参考上述第五方面所带来的技术效果，在此不再赘述。
在一种可能的设计中，该方法还包括：若第四信息指示第二小区不向第一终端提供第二广播业务，发起单播接收请求，单播接收请求用于请求通过单播方式接收第二广播业务。
基于该可能的设计，在第一终端获知第二小区不向第一终端提供第二广播业务的情况下，第一终端可以发起单播连接请求，以请求通过单播方式接收第二广播业务，从而提升第二广播业务的覆盖，以及提升第一终端用户的用户体验。
在一种可能的设计中，该方法还包括：接收第七信息，第七信息指示第三小区的至少一个邻区，邻区提供第三小区提供的一个或多个广播业务，至少一个邻区包括第二小区，第三小区提供的一个或多个广播业务包括第二广播业务。
在一种可能的设计中，该邻区向第一终端提供第三小区提供的一个或多个广播业务，或者，该邻区向第一终端和第二终端提供第三小区提供的一个或多个广播业务，第二终端的最大工作带宽大于第一终端的最大工作带宽。
在一种可能的设计中，根据第四信息确定第二小区是否向第一终端提供第二广播业务，包括：根据第四信息和第七信息确定第二小区是否向第一终端提供第二广播业务。
结合第五方面或第六方面，在一种可能的设计中，第四信息携带在多播广播业务控制信道MCCH消息中。
第七方面，提供了一种通信方法，该方法可以由网络设备执行，也可以由网络设备的部件，例如网络设备的处理器、芯片、或芯片系统等执行，还可以由能实现全部或部分网络设备功能的逻辑模块或软件实现。该方法包括：确定第五信息，并发送第五信息。其中，第五信息包括第一频率选择区域标识FSAI以及第一FSAI对应的第一频点，第一频点是为第一终端提供第一FSAI对应的广播业务的频点。第一终端包括能力降低RedCap终端和/或增强型能力降低eRedCap终端。
基于该方案，网络设备可以针对FSAI指示为第一终端提供该FSAI对应的广播业务的频点。使得第一终端可以将该频点的小区重选优先级设置为最高优先级，从而增加第一终端重选到第一频点上的小区的概 率，从而在第一终端在当前小区正在接收该广播业务的情况下，能够提升该广播业务的连续性，或者在第一终端在当前小区未接收该广播业务，但对该广播业务感兴趣或期望接收该广播业务的情况下，能够提高该广播业务的接收成功率。
在一种可能的设计中，第五信息还包括第一FSAI对应的第二频点，第二频点是为第二终端提供第一FSAI对应的广播业务的频点，第二终端的最大工作带宽大于第一终端的最大工作带宽。
在一种可能的设计中，第五信息携带在小区的系统信息中。
第八方面，提供了一种通信方法，该方法可以由第一终端执行，也可以由第一终端的部件，例如第一终端的处理器、芯片、或芯片系统等执行，还可以由能实现全部或部分第一终端功能的逻辑模块或软件实现。该方法包括：获取第六信息，第六信息包括第一频点，第一频点为第一频率选择区域标识FSAI对应的频点，或者第一频点为第三广播业务对应的频点。将第一频点的小区重选优先级设置为最高优先级，第三广播业务为第一终端正在接收或感兴趣的广播业务，第一FSAI为第三广播业务对应的FSAI，第一频点是为第一终端提供第三广播业务的频点。第一终端为能力降低RedCap终端和/或增强型能力降低eRedCap终端。
基于该方案，网络设备可以针对广播业务指示为第一终端提供该广播业务的频点。使得第一终端可以将该频点的小区重选优先级设置为最高优先级，从而增加第一终端重选到第一频点上的小区的概率，从而在第一终端在当前小区正在接收该广播业务的情况下，能够提升该广播业务的连续性，或者在第一终端在当前小区未接收该广播业务，但对该广播业务感兴趣或期望接收该广播业务的情况下，能够提高该广播业务的接收成功率。
在一种可能的设计中，第六信息携带在小区的系统信息中；或者，第六信息位于多播广播业务MBS的用户业务描述USD中。
在一种可能的设计中，第六信息还包括第二频点，第二频点为第二FSAI对应的频点，或者第二频点为第三广播业务对应的频点。其中，第二FSAI为第三广播业务对应的FSAI，第二频点是为第二终端提供第三广播业务的频点，第二终端的最大工作带宽大于第一终端的最大工作带宽。
第九方面，提供了一种通信装置，该通信装置包括单元或模块，该单元或模块用于执行上述第一方面至第八方面所述任一方法。
第十方面，提供了一种通信装置用于实现各种方法。该通信装置可以为第一方面或第三方面或第五方面或第七方面中的网络设备，或者网络设备中包含的装置，比如芯片或芯片系统；或者，该通信装置可以为第二方面或第四方面或第六方面或第八方面中的终端，或者终端中包含的装置，比如芯片或芯片系统。所述通信装置包括实现方法相应的模块、单元、或手段(means)，该模块、单元、或means可以通过硬件实现，软件实现，或者通过硬件执行相应的软件实现。该硬件或软件包括一个或多个与功能相对应的模块或单元。
在一些可能的设计中，该通信装置可以包括处理模块和收发模块。该处理模块，可以用于实现上述任一方面及其任意可能的实现方式中的处理功能。收发模块可以包括接收模块和发送模块，分别用以实现上述任一方面及其任意可能的实现方式中的接收功能和发送功能。
在一些可能的设计中，收发模块可以由收发电路，收发机，收发器或者通信接口构成。
第十一方面，提供了一种通信装置，包括：处理器和存储器；该存储器用于存储计算机指令，当该处理器执行该指令时，以使该通信装置执行任一方面所述的方法。该通信装置可以为第一方面或第三方面或第五方面或第七方面中的网络设备，或者网络设备中包含的装置，比如芯片或芯片系统；或者，该通信装置可以为第二方面或第四方面或第六方面或第八方面中的终端，或者终端中包含的装置，比如芯片或芯片系统。
第十二方面，提供一种通信装置，包括：处理器和通信接口；该通信接口，用于与该通信装置之外的模块通信；所述处理器用于执行计算机程序或指令，以使该通信装置执行任一方面所述的方法。该通信装置可以为第一方面或第三方面或第五方面或第七方面中的网络设备，或者网络设备中包含的装置，比如芯片或芯片系统；或者，该通信装置可以为第二方面或第四方面或第六方面或第八方面中的终端，或者终端中包含的装置，比如芯片或芯片系统。
第十三方面，提供了一种通信装置，包括：至少一个处理器；所述处理器用于执行存储器中存储的计算机程序或指令，以使该通信装置执行任一方面所述的方法。该存储器可以与处理器耦合，或者，也可以独立于该处理器。该通信装置可以为第一方面或第三方面或第五方面或第七方面中的网络设备，或者网络设备中包含的装置，比如芯片或芯片系统；或者，该通信装置可以为第二方面或第四方面或第六方面或第 八方面中的终端，或者终端中包含的装置，比如芯片或芯片系统。
第十四方面，提供了一种计算机可读存储介质，该计算机可读存储介质中存储有计算机程序或指令，当其在通信装置上运行时，使得通信装置可以执行任一方面所述的方法。
第十五方面，提供了一种包含指令的计算机程序产品，当其在通信装置上运行时，使得该通信装置可以执行任一方面所述的方法。
第十六方面，提供了一种通信装置(例如，该通信装置可以是芯片或芯片系统)，该通信装置包括处理器，用于实现任一方面中所涉及的功能。
在一些可能的设计中，该通信装置包括存储器，该存储器，用于保存必要的程序指令和数据。
在一些可能的设计中，该装置是芯片系统时，可以由芯片构成，也可以包含芯片和其他分立器件。
可以理解的是，第九方面至第十六方面中任一方面提供的通信装置是芯片时，通信装置的发送动作/功能可以理解为输出信息，通信装置的接收动作/功能可以理解为输入信息。
其中，第九方面至第十六方面中任一种设计方式所带来的技术效果可参见第一方面至第八方面中不同设计方式所带来的技术效果，在此不再赘述。
附图说明
图1为本申请提供的一种通信系统的结构示意图；
图2为本申请提供的一种通信装置的结构示意图；
图3为本申请提供的一种MBS业务的传输路径示意图；
图4为本申请提供的一种组播业务的传输方式示意图；
图5为本申请提供的一种广播业务的接收流程示意图；
图6为本申请提供的一种广播业务的传输方式示意图；
图7为本申请提供的一种通信方法的流程示意图；
图8为本申请提供的一种MCCH和CFR的配置示意图；
图9为本申请提供的另一种MCCH和CFR的配置示意图；
图10为本申请提供的另一种通信方法的流程示意图；
图11为本申请提供的另一种MCCH和CFR的配置示意图；
图12为本申请提供的另一种通信方法的流程示意图；
图13为本申请提供的另一种通信方法的流程示意图；
图14为本申请提供的另一种通信方法的流程示意图；
图15为本申请提供的一种网络设备的结构示意图；
图16为本申请提供的一种终端的结构示意图；
图17为本申请提供的另一种通信装置的结构示意图；
图18为本申请提供的一种CU-DU分离架构的示意图；
图19为本申请提供的一种通信方法的流程示意图；
图20-图21为本申请提供的通信方法的流程示意图。
具体实施方式
在本申请的描述中，除非另有说明，“/”表示前后关联的对象是一种“或”的关系，例如，A/B可以表示A或B；本申请中的“和/或”仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况，其中A，B可以是单数或者复数。
在本申请的描述中，除非另有说明，“多个”是指两个或多于两个。“以下至少一项(个)”或其类似表达，是指的这些项中的任意组合，包括单项(个)或复数项(个)的任意组合。例如，a，b，或c中的至少一项(个)，可以表示：a，b，c，a-b，a-c，b-c，或a-b-c，其中a，b，c可以是单个，也可以是多个。
另外，为了便于清楚描述本申请实施例的技术方案，在本申请的实施例中，采用了“第一”、“第二”等字样对功能和作用基本相同的相同项或相似项进行区分。本领域技术人员可以理解“第一”、“第二”等字样并不对数量和执行次序进行限定，并且“第一”、“第二”等字样也并不限定一定不同。
在本申请实施例中，“示例性的”或者“例如”等词用于表示作例子、例证或说明。本申请实施例中被描述为“示例性的”或者“例如”的任何实施例或设计方案不应被解释为比其它实施例或设计方案更优选 或更具优势。确切而言，使用“示例性的”或者“例如”等词旨在以具体方式呈现相关概念，便于理解。
可以理解，说明书通篇中提到的“实施例”意味着与实施例有关的特定特征、结构或特性包括在本申请的至少一个实施例中。因此，在整个说明书各个实施例未必指相同的实施例。此外，这些特定的特征、结构或特性可以任意适合的方式结合在一个或多个实施例中。可以理解，在本申请的各种实施例中，各过程的序号的大小并不意味着执行顺序的先后，各过程的执行顺序应以其功能和内在逻辑确定，而不应对本申请实施例的实施过程构成任何限定。
可以理解，本申请实施例中的一些可选的特征，在某些场景下，可以不依赖于其他特征，比如其当前所基于的方案，而独立实施，解决相应的技术问题，达到相应的效果，也可以在某些场景下，依据需求与其他特征进行结合。相应的，本申请实施例中给出的装置也可以相应的实现这些特征或功能，在此不予赘述。
本申请中，除特殊说明外，各个实施例之间相同或相似的部分可以互相参考。在本申请中各个实施例如果没有特殊说明以及逻辑冲突，不同的实施例之间的术语和/或描述具有一致性、且可以相互引用，不同的实施例根据其内在的逻辑关系可以组合形成新的实施例。以下所述的本申请实施方式并不构成对本申请保护范围的限定。
本申请提供的技术方案可用于各种通信系统，该通信系统可以为第三代合作伙伴计划(3rd generation partnership project，3GPP)通信系统，例如，第四代(4th generation，4G)长期演进(long term evolution，LTE)系统、第五代(5th generation，5G)新无线(new radio，NR)系统、车联网(vehicle to everything，V2X)系统、LTE和NR混合组网的系统、或者设备到设备(device-to-device，D2D)系统、机器到机器(machine to machine，M2M)通信系统、物联网(Internet of Things，IoT)，以及其他下一代通信系统等。或者，该通信系统也可以为非3GPP通信系统，不予限制。
其中，上述适用本申请的通信系统仅是举例说明，适用本申请的通信系统不限于此，在此统一说明，以下不再赘述。
参见图1，为本申请提供的一种示例性的通信系统。该通信系统包括至少一个网络设备(如图1中的110a和110b)和至少一个终端(如图1中的120a-120j)。
可选的，终端和终端之间以及网络设备和网络设备之间可以通过有线或无线的方式相互通信。图1只是示意图，该通信系统中还可以包括其它网络设备，如还可以包括无线中继设备、无线回传设备、核心网设备等，在图1中未画出。图1中网络设备和终端的数量仅是示例，通信系统中可以包括比图1所示更多或更少的网络设备或终端。
可选的，该通信系统中的至少一个终端包括第一终端。进一步的，还可以包括第二终端。其中，第一终端的最大工作带宽小于第二终端的最大工作带宽，或者说，第二终端的最大工作带宽大于第一终端的最大工作带宽，或者说，第二终端设备为普通终端或非能力降低终端或正常(normal)终端。
其中，第一终端属于第一类终端，第二终端属于第二类终端。本申请下述实施例中第一终端的特征也可以理解为第一类终端的特征。第二终端的特征也可以理解为第二类终端的特征。
示例性的，第一类终端可以包括能力降低(reduced capability，RedCap)终端和/或增强型RedCap(enhanced，eRedCap)终端。第二类终端可以为增强移动宽带(enhanced mobile broadband，eMBB)终端。
可选的，eRedCap终端可以指满足以下至少一项的终端：
1)带宽降低。
可选的，用于物理下行共享信道(physical downlink shared channel，PDSCH)和物理上行共享信道(physical uplink shared channel，PUSCH)的基带带宽仅支持5兆赫兹(mega hertz，MHz)。上行(uplink，UL)和下行(downlink，DL)的射频带宽(radio frequency，RF)为20MHz。
可选的，其他物理信道和信号仍然被允许使用高达20MHz的最大射频带宽和基带带宽的部分带宽(bandwidth part，BWP)。此外，支持额外的单独早期指示(early indication(s))。
2)峰值数据速率降低。
3)支持15千赫兹(kHz)和30kHz的子载波间隔(Subcarrier spacing，SCS)。
可选的，RedCap终端可以指满足以下至少一项的终端：
1)带宽降低。
可选的，RedCap终端在频率范围1(frequency range1，FR1)上的最大带宽为20MHz，在频率范围2(frequency range2，FR2)上的最大带宽为100MHz。
2)接收天线减少，调制阶数降低。
可选的，接收天线数目减少至1或2个，即RedCap终端的接收天线数目为1或2。调制阶数由FR1256正交幅度调制(quadrature amplitude modulation，QAM)降低至FR1 64QAM。
需要说明的是，RedCap终端和eRedCap终端还可以有其他名称。例如，RedCap终端也可以称为Rel-17终端或Rel-17 RedCap终端或NR light终端；eRedCap终端也可以称为Rel-18终端或Rel-18 RedCap终端。本申请对RedCap终端和eRedCap终端的名称不作具体限定。
可选的，除RedCap终端和eRedCap终端外，第一类终端还可以包括其他终端，如远距离无线(long range radio，LoRa)终端、窄带物联网(narrow band internet of things，NB-IoT)终端、Weightless终端、Sigfox终端等。
可选的，终端可以指一种具有无线收发功能的用户侧设备。终端也可以称为用户设备(user equipment，UE)、终端设备、接入终端、用户单元、用户站、移动站(mobile station，MS)、远方站、远程终端、移动终端(mobile terminal，MT)、用户终端、无线通信设备、用户代理或用户装置等。终端例如可以是IoT、V2X、D2D、M2M、5G网络、或者未来演进的公共陆地移动网络(public land mobile network，PLMN)中的终端。终端可以部署在陆地上，包括室内或室外、手持或车载；也可以部署在水面上(如轮船等)；还可以部署在空中(例如飞机、气球和卫星上等)。
示例性的，终端可以是无人机、IoT设备(例如，传感器，电表，水表等)、V2X设备、无线局域网(wireless local area networks，WLAN)中的站点(station，ST)、蜂窝电话、无绳电话、会话启动协议(session initiation protocol，SIP)电话、无线本地环路(wireless local loop，WLL)站、个人数字处理(personal digital assistant，PDA)设备、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设备、车载设备、可穿戴设备(也可以称为穿戴式智能设备)、平板电脑或带无线收发功能的电脑、虚拟现实(virtual reality，VR)终端、工业控制(industrial control)中的无线终端、无人驾驶(self driving)中的无线终端、远程医疗(remote medical)中的无线终端、智能电网(smart grid)中的无线终端、运输安全(transportation safety)中的无线终端、智慧城市(smart city)中的无线终端、智慧家庭(smart home)中的无线终端、车载终端、具有车对车(vehicle-to-vehicle，V2V)通信能力的车辆、智能网联车、具有无人机(unmanned aerial vehicle，UAV)对无人机(UAV to UAV，U2U)通信能力的无人机等等。终端可以是移动的，也可以是固定的，本申请对此不作具体限定。
可选的，网络设备是一种将终端接入到无线网络的设备，可以是LTE或演进的LTE系统(LTE-Advanced，LTE-A)中的演进型基站(evolutional Node B，eNB或eNodeB)，如传统的宏基站eNB和异构网络场景下的微基站eNB；或者可以是5G系统中的下一代节点B(next generation node B，gNodeB或gNB)；或者可以是传输接收点(transmission reception point，TRP)；或者可以是未来演进的PLMN中的基站；或者可以是宽带网络业务网关(broadband network gateway，BNG)、汇聚交换机或非3GPP接入设备；或者可以是云无线接入网络(cloud radio access network，CRAN)中的无线控制器；或者可以是WiFi系统中的接入节点(access point，AP)；或者可以是无线中继节点或无线回传节点；或者可以是IoT、V2X、D2D、或M2M中实现基站功能的设备，本申请实施例对此不作具体限定。示例性的，本申请实施例中的基站可以包括各种形式的基站，例如：宏基站，微基站(也称为小站)，中继站，接入点等，本申请实施例对此不作具体限定。
一些可能的场景中，网络设备还可以是能够实现基站部分或全部功能的模块或单元，例如，网络设备可以是集中式单元(central unit，CU)，分布式单元(distributed unit，DU)，CU和DU，CU-控制面(control plane，CP)，CU-用户面(user plane，UP)，或者无线单元(radio unit，RU)等。CU和DU可以是单独设置，或者也可以包括在同一个网元中，例如基带单元(baseband unit，BBU)中。RU可以包括在射频设备或者射频单元中，例如包括在射频拉远单元(remote radio unit，RRU)、有源天线处理单元(active antenna unit，AAU)或远程射频头(remote radio head，RRH)中。
示例性的，如图18中的(a)所示，网络设备可以包括一个CU和至少一个DU，进一步的，如图18中的(b)所示，CU可以包括一个CU-CP和至少一个CU-UP。CU和DU之间通过F1接口通信，进一步的，CU-CP和DU之间通过F1-C接口通信，CU-UP和DU之间通过F1-U接口通信。CU-CP和CU-UP之间通过E1接口通信。
在不同系统中，CU(或CU-CP和CU-UP)、DU或RU也可以有不同的名称，但是本领域的技术人员可以理解其含义。例如，网络设备可以是开放无线接入网(open RAN，ORAN)系统中的网络设备或网络设备的模块。在ORAN系统中，CU还可以称为开放(open，O)-CU，DU还可以称为O-DU，CU-CP还可以称为O-CU-CP，CU-UP还可以称为O-CU-UP，RU还可以称为O-RU。本申请中的CU(或CU-CP、 CU-UP)、DU和RU中的任一单元，可以是通过软件模块、硬件模块、或者软件模块与硬件模块结合来实现。
需要说明的是，本申请实施例描述的通信系统是为了更加清楚的说明本申请实施例的技术方案，并不构成对于本申请实施例提供的技术方案的限定，本领域普通技术人员可知，随着网络架构的演变和新业务场景的出现，本申请实施例提供的技术方案对于类似的技术问题，同样适用。
可选的，本申请涉及的终端或网络设备的相关功能可以通过图2中的通信装置200来实现。图2为本申请提供的一种通信装置200的组成示意图，该通信装置200可以为终端或者终端中的芯片或者片上系统；或者，可以为网络设备或者网络设备中的模块或芯片或片上系统。
如图2所示，该通信装置200包括至少一个处理器201，以及至少一个通信接口(图2中仅是示例性的以包括一个通信接口204，以及一个处理器201为例进行说明)。可选的，该通信装置200还可以包括通信总线202和存储器203。
处理器201可以是一个通用中央处理器(central processing unit，CPU)、通用处理器、网络处理器(network processor，NP)、数字信号处理器(digital signal processing，DSP)、微处理器、微控制器、可编程逻辑器件(programmable logic device，PLD)或它们的任意组合。处理器201还可以是其它具有处理功能的装置，例如电路、器件或软件模块，不予限制。
通信总线202用于连接通信装置200中的不同组件，使得不同组件可以通信。通信总线202可以是外设部件互连标准(peripheral component interconnect，PCI)总线或扩展工业标准结构(extended industry standard architecture，EISA)总线等。该总线可以分为地址总线、数据总线、控制总线等。为便于表示，图2中仅用一条粗线表示，但并不表示仅有一根总线或一种类型的总线。
通信接口204，用于与其他设备或通信网络通信。示例性的，通信接口204可以模块、电路、收发器或者任何能够实现通信的装置。可选的，所述通信接口204也可以是位于处理器201内的输入输出接口，用以实现处理器的信号输入和信号输出。
存储器203，可以是具有存储功能的装置，用于存储指令和/或数据。其中，指令可以是计算机程序。
示例性的，存储器203可以是只读存储器(read-only memory，ROM)或可存储静态信息和/或指令的其他类型的静态存储设备，也可以是随机存取存储器(random access memory，RAM)或可存储信息和/或指令的其他类型的动态存储设备，还可以是电可擦可编程只读存储器(electrically erasable programmable read-only memory，EEPROM)、只读光盘(compact disc read-only memory，CD-ROM)或其他光盘存储、光碟存储(包括压缩光碟、激光碟、光碟、数字通用光碟、蓝光光碟等)、磁盘存储介质或其他磁存储设备等，不予限制。
需要指出的是，存储器203可以独立于处理器201存在，也可以和处理器201集成在一起。存储器203可以位于通信装置200内，也可以位于通信装置200外，不予限制。处理器201，可以用于执行存储器203中存储的指令，以实现本申请下述实施例提供的方法。
作为一种可选的实现方式，通信装置200还可以包括输出设备205和输入设备206。输出设备205和处理器201通信，可以以多种方式来显示信息。例如，输出设备205可以是液晶显示器(liquid crystal display，LCD)，发光二极管(light emitting diode，LED)显示设备，阴极射线管(cathode ray tube，CRT)显示设备，或投影仪(projector)等。输入设备206和处理器201通信，可以以多种方式接收用户的输入。例如，输入设备206可以是鼠标、键盘、触摸屏设备或传感设备等。
需要说明的是，图2所示的结构并不构成对网络设备或终端的具体限定。比如，在本申请另一些实施例中，网络设备或终端可以包括比图示更多或更少的部件，或者组合某些部件，或者拆分某些部件，或者不同的部件布置。图示的部件可以以硬件，软件或软件和硬件的组合实现。
为了方便理解本申请实施例的技术方案，首先给出本申请相关技术的简要介绍如下。
1、多播广播业务(multicast and broadcast service，MBS)：
多播广播业务(multicast and broadcast service，MBS)是面向多个终端的业务，从端到端的管理控制流程的角度，MBS业务可以分为组播业务和广播业务。常见的MBS业务包括直播业务、公共安全业务、批量软件更新业务等。如图3所示，MBS业务的传输路径可以为：数据服务器(或称为MBS服务器)→核心网设备→基站→多个终端。
其中，核心网设备向基站发送MBS业务时，业务数据通过MBS会话(session)传输，MBS会话包括至少一个MBS服务质量(quality of service，QoS)流。基站向终端发送MBS业务时，业务数据通过MBS无线承载(MBS radio bearer，MRB)传输。对于一个MRB，可以采用点到多点(point to multi-point，PTM) 或点到点(point to point，PTP)的传输方式。
1a.组播业务(multicast service)：
组播业务的服务质量(quality of service，QoS)要求通常较高，组播业务可以达到和单播业务相同的QoS等级。通常，可以对组播业务进行组管理等操作。示例性的，核心网设备可以管理终端加入或退出组播业务组，基站和核心网设备可以维护组播业务组中终端的信息。
如图4所示，在核心网设备和基站之间，组播业务通过MBS会话传输，MBS会话包括MBS QoS流(或称为多播QoS流(multi-cast QoS flow))。MBS会话可以关联终端的PDU会话，MBS QoS流关联PDU会话中的单播QoS流。核心网设备可以控制MBS会话的状态为激活状态或去激活状态，终端并不感知MBS会话的状态。
基站向终端发送组播业务时，可以采用PTM或PTP的传输方式。在PTM方式中，组播业务数据可以采用组无线网络临时标识(group radio network temporary identifier，G-RNTI)加扰；在PTP方式中，组播业务数据采用小区无线网络临时标识(cell radio network temporary identifier，C-RNTI)加扰。此外，基站可以控制传输方式在PTM和PTP之间动态切换。
1b.广播业务(broadcast service)：
相对于组播业务，广播业务的QoS要求较低，属于尽力而为的QoS(best effort QoS)。核心网设备和基站无需维护接收广播业务的终端组。当网络提供广播业务时，终端根据配置信息自主接收。此外，基站向终端发送广播业务时，只支持PTM传输方式。广播业务可以向处于任何无线资源控制(radio resource control，RRC)状态的终端提供。
针对广播业务，NR系统中引入两个逻辑信道：MBS控制信道(MBS control channel，MCCH)和MBS业务信道(MBS traffic channel，MTCH)。其中，MCCH用于传输控制信息，包含该控制信息的消息可以称为MCCH消息，控制信息可以包括MTCH的配置信息。MTCH用于传输广播业务的数据，包含广播业务数据的消息可以称为MTCH消息。在物理层，MCCH消息和广播业务承载在PDSCH中。承载MCCH消息的PDSCH可以称为MCCH消息对应的PDSCH，承载广播业务的PDSCH可以称为广播业务对应的PDSCH。
MCCH消息周期性传输，其配置信息承载于系统消息块(systeminformation block，SIB)中，比如SIB20。示例性的，SIB20可以包括MCCH的配置信息(位于信元mcch-Config中)以及公用频率资源(common frequency resource，CFR)(位于信元cfr-ConfigMCCH-MTCH中)。
示例性的，MCCH的配置信息可以包括MCCH的重复周期(repetition period，RP)、偏移量(mcch-Offset)、传输时间(mcch-duration)、修改周期(modification period,MP)等。cfr-ConfigMCCH-MTCH信元可以包括LocationAndBandwidthBroadcast信元，该信元用于配置CFR。
示例性的，CFR为一段连续的频域资源，可以通过起始位置和带宽大小定义。CFR用于传输MBS业务。示例性的，CFR可以为：控制资源集合(control resource set，CORESET)0(即CORESET0)、SIB1配置的带宽(如初始部分带宽(bandwidth part，BWP))、或比SIB1配置的带宽更大的单独配置的带宽。
示例性的，CFR也可以有其他名称，如可以也称为BWP或广播BWP或多播BWP，本申请对CFR的名称不作具体限定。
MCCH消息和广播业务在CFR中传输。CFR可以理解为MCCH消息对应的PDSCH和广播业务对应的PDSCH所在的频率范围，该PDSCH的具体频域位置由物理下行控制信道(physical downlink control channel，PDCCH)中的下行控制信息(downlink control information，DCI)调度。
MCCH消息中的MTCH的配置信息可以以广播业务为粒度，即MTCH的配置为每(per)业务级别。每个广播业务可以关联一个G-RNTI。广播业务可以通过临时多播组标识(temporary multicast group identifier，TMGI)标识，即TMGI可以理解为广播业务的标识。
示例性的，MTCH的配置信息可以包括G-RNTI、非连续接收(discontinuous reception，DRX)参数、TMGI、MTCH对应的物理下行共享信道(physical downlink shared channel，PDSCH)配置等。
综上，终端接收广播业务的流程可以如图5所示。参见图5，终端首先接收SIB，从SIB中获取MCCH的配置信息。之后，根据MCCH的配置信息接收MCCH消息，读取MCCH消息的内容，以获取MCCH承载的MTCH的配置信息。最后，根据MTCH的配置信息接收广播业务的数据。
示例性的，如图6所示，示出了广播业务从MBS服务器到终端的传输过程。在传输业务之前，MBS服务器可以向核心网设备发送信息指示广播会话开始，相应的，核心网设备向基站指示广播会话开始，基站收到该指示后，向核心网设备发送响应，并通过MCCH发送MTCH的配置信息。后续，广播业务1和 广播业务2的数据从MBS服务器发送至核心网设备，再从核心网设备发送至基站，基站通过MTCH 1和MTCH 2分别向终端发送广播业务1和广播业务2的数据。
需要说明的是，上述仅是示例性的对广播业务的传输进行说明，本申请对广播业务的传输不作具体限定，上述对广播业务的说明也不构成对本申请的任何限制。
2、邻区业务指示：
对于广播业务，MTCH的配置信息还可以包括邻区业务指示。该邻区业务指示当前小区的邻区是否提供相应的广播业务。其中，该相应的广播业务指MTCH的配置信息中的G-RNTI关联的广播业务。
示例性的，MTCH的配置信息可以包括比特字符串(bit string)(或称为比特位图或比特序列)。该比特字符串的每个比特可以对应一个邻区，某个比特的取值可以指示该比特对应的邻区是否提供相应的广播业务。如该比特的取值为1表示该比特对应的邻区提供相应的广播业务，取值为0表示该比特对应的邻区不提供相应的广播业务。
示例性的，MTCH的配置信息可以承载于MBS-SessionInfo信元中，该信元例如可以包括如下信息：
对于终端来说，若MTCH的配置信息中指示某个邻区提供该终端正在接收或感兴趣的广播业务，那么终端在移动或重选到该小区后可以接收该广播业务。若MTCH的配置信息指示某个邻区不提供终端正在接收或感兴趣的广播业务，那么终端可以在移动或重选到该小区前/后触发单播会话的建立用于接收该广播业务。
除邻区业务指示外，网络设备还可以以小区为粒度配置MBS广播邻区列表(MBS Broadcast Neighbour Cell List)。MBS广播邻区列表指示通过广播MRB提供本小区提供的一个或多个广播业务的相邻小区。其中，MBS广播邻区列表中的第一个小区即为mtch-NeighbourCell中的第一个比特对应的邻区，第二个小区即为mtch-NeighbourCell中的第二个小区对应的邻区，以此类推。
也就是说，MBS广播邻区列表能够指示哪些邻区可以提供本小区提供的一个或多个广播业务，每个邻区提供的具体广播业务可以通过mtch-NeighbourCell信元指示。
在CU-DU分离架构下，CU可以向DU发送MBS广播邻区列表和邻区业务指示，再由DU通过MCCH消息(如MBS广播配置(MBSBroadcastConfiguration)消息)将MBS广播邻区列表和邻区业务指示发送给终端。
示例性的，CU可以通过如下至少一种消息向DU发送MBS广播邻区列表：F1建立响应(F1 SETUP RESPONSE)消息、DU配置更新确认(DU CONFIGURATION UPDATE ACKNOWLEDGE)消息、或CU配置更新(CU CONFIGURATION UPDATE)消息。
CU可以通过如下至少一种消息向DU发送邻区业务指示(mtch-NeighbourCell)：广播上下文建立请求(BROADCAST CONTEXT SETUP REQUEST)消息或广播上下文更改请求(BROADCAST CONTEXT MODIFICATION REQUEST)消息。
作为一种可能的实现，不限制网络设备配置的MBS广播邻区列表中的小区，一定提供本小区提供的一个或多个广播业务。例如，该列表中的小区可能不提供任何广播业务，或者不提供本小区提供的一个或多个广播业务。此时，该列表也可以有其他名称，如邻区列表，不予限制。
3、小区重选优化：
对于广播业务，应用功能网元可以提供MBS用户业务描述(user service description，USD)。MBS USD中可以包括MBS会话标识、TMGI、频率选择区域标识(frequency selection area identifier，FSAI)、或频点信息中的至少一项。
此外，小区可以提供SIB21，该SIB21中可以包括至少一个FSAI。或者可以包括至少一个FSAI及其对应的频点。当然，小区也可能不提供SIB21。
目前，对于期望接收或正在接收广播业务的终端，为了增大终端重选到提供该广播业务的小区的概率，对小区重选进行了如下增强：
在如下两个条件满足的情况下，将某些频点(为了方便描述，以下称为频点A)的优先级设置为最高优先级：
1)、频点A上的小区的SIB1调度信息中包括SIB20。
2)、当前服务小区的SIB21中包括终端期望接收或正在接收的广播业务对应的FSAI及该FSAI对应的频点，该FSAI对应的频点即为频点A。示例性的，终端期望接收或正在接收的广播业务对应的FSAI可以根据终端的MBS USD得到。
即，终端的MBS USD中指示了终端期望接收或正在接收的广播业务对应的FSAI，且相同的FSAI包括在当前服务小区的SIB21中，那么可以将SIB21中的该FSAI对应的频点的优先级设置为最高优先级。
或者，条件2)可以为：
2)、当前服务小区不提供SIB21，终端的MBS USD包括该业务(即终端期望接收或正在接收的业务)对应的频点A。
或者，条件2)可以为：
2)、当前服务小区提供SIB21，但是SIB21不提供该业务对应的频率的映射关系，且终端的MBS USD包括该业务对应的频点A。其中，该业务指终端期望接收或正在接收的业务。
上述对MBS业务进行了相关介绍。然而，上述方案是针对普通终端设计的，在引入第一终端(如RedCap终端或eRedCap终端)的场景下，目前的MBS业务的传输配置等可能不再适用。
基于此，本申请提供一种通信方法，在引入第一终端，如RedCap终端或eRedCap终端的场景下，可以使得第一终端尽可能的接收广播业务，提升第一终端用户的用户体验。
下面将结合附图，以图1所示的网络设备和终端之间的交互为例，对本申请实施例提供的通信方法进行展开说明。
可以理解的，本申请实施例中，网络设备或终端可以执行本申请实施例中的部分或全部步骤，这些步骤或操作仅是示例，本申请实施例还可以执行其它操作或者各种操作的变形。此外，各个步骤可以按照本申请实施例呈现的不同的顺序来执行，并且有可能并非要执行本申请实施例中的全部操作。
需要说明的是，本申请下述实施例中各个设备之间的消息名字或消息中各参数的名字等只是一个示例，具体实现中也可以是其他的名字，本申请实施例对此不作具体限定。
需要说明的是，本申请实施例中与第一终端关联的特征均适用于第一类终端，即本申请下述实施例中的第一终端可以替换为第一类终端。
如图7所示，为本申请实施例提供的一种通信方法，该通信方法包括如下步骤：
S701、网络设备确定第一信息。
其中，第一信息指示第一小区是否支持向第一终端提供广播业务。示例性的，第一信息指示第一小区是否支持向第一终端提供广播业务，也可以理解为：第一信息指示第一小区是否支持向第一类终端(如RedCap终端或eRedCap终端)提供广播业务。该第一类终端可参考上述系统说明部分中对第一类终端的相关说明，在此不再赘述。
可选的，第一小区属于该网络设备，或者说，该网络设备为第一小区所属的网络设备，或者说，该网络设备管理第一小区。示例性的，第一小区可以为某个第一终端的服务小区或驻留小区。
可选的，第一信息指示第一小区是否支持向第一终端提供广播业务，可以不限定该广播业务具体为哪个广播业务，例如，此处的广播业务可以是泛指的广播业务，如第一小区提供的任意广播业务，或第一小区提供的全部广播业务。或者，该广播业务也可以是某个或某些具体的广播业务，将在后续实施例中通过第一信息的实现进行说明，在此不予赘述。
可选的，第一小区是否支持向第一终端提供广播业务，也可以理解为：第一小区提供的广播业务是否支持第一终端接收，或者，第一终端是否能够接收第一小区提供的广播业务，或者，第一小区是否向第一终端提供广播业务，或者，第一小区是否正在向第一终端提供广播业务，或者，第一小区是否向第一终端提供广播业务的调度，或者，第一小区是否向第一终端提供用于配置广播业务的信息，或者，第一小区是否向第一终端提供用于配置广播业务的信息的调度，或者，第一小区是否向第一终端提供MCCH消息，或者，第一小区是否向第一终端提供MCCH消息的调度。
示例性的，是否支持第一终端设备接收，也可以理解为：是否支持第一终端设备通过(或采用)广播方式接收。第一终端是否能够接收，也可以理解为：第一终端是否能够通过广播方式接收。
S702、网络设备发送第一信息。相应的，第一终端接收第一信息。
可选的，第一信息可以携带在MCCH消息中。即，网络设备发送第一信息，可以包括：网络设备发送 MCCH消息，该MCCH消息包括第一信息。第一终端接收第一信息，可以包括：第一终端接收MCCH消息，该MCCH消息包括第一信息。
或者，第一信息可以携带在第一小区的系统信息中。即，网络设备发送第一信息，可以包括：网络设备发送第一小区的系统信息，该系统信息包括第一信息。第一终端接收第一信息，可以包括：第一终端接收第一小区的系统信息，该系统信息包括第一信息。示例性的，该系统信息可以为SIB1、SIB20、或SIB21。
或者，第一信息可以携带在RRC重配消息中。即，网络设备发送第一信息，可以包括：网络设备发送RRC重配消息，该RRC重配消息包括第一信息。
可选的，本申请实施例中，信息携带在MCCH消息中，也可以理解为：信息承载在MCCH中，二者可以相互替换，本申请对此不作具体限定。
S703、第一终端根据第一信息确定是否能够通过广播方式接收第一小区提供的广播业务。
可选的，第一信息指示第一小区支持向第一终端提供广播业务的情况下，第一终端可以根据第一信息确定：能够通过广播方式接收第一小区提供的广播业务。第一信息指示第一小区不支持向第一终端提供广播业务的情况下，第一终端可以根据第一信息确定：不能通过广播方式接收第一小区提供的广播业务。
可选的，在第一终端能够通过广播方式接收第一小区提供的广播业务的情况下，第一终端可以接收广播业务的配置信息，根据该配置信息通过广播方式接收第一小区提供的广播业务。
在第一终端不能通过广播方式接收第一小区提供的广播业务的情况下，第一终端可以和网络设备建立单播连接，通过单播方式接收第一小区提供的广播业务。或者，第一终端可以触发小区重选，即第一终端不能通过广播方式接收第一小区提供的广播业务时触发小区重选。或者，在下一次小区重选被触发时(触发条件可以为目前3GPP标准定义的小区重选触发条件)，尽可能重选到支持向第一终端提供广播业务的小区。
基于该方案，网络设备发送第一信息指示第一小区是否支持向第一终端提供广播业务，使得第一终端能够根据第一信息获知是否能够通过广播方式接收第一小区提供的广播业务。如第一小区支持向第一终端提供广播业务的情况下，第一终端能够通过广播方式接收第一小区提供的广播业务，第一小区不支持向第一终端提供广播业务的情况下，第一终端不能通过广播方式接收第一小区提供的广播业务。由于第一终端可以获知是否能够通过广播方式接收第一小区提供的广播业务，因此，在第一终端获知不能通过广播方式接收第一小区提供的广播业务的情况下，第一终端可以采取措施(如发起单播连接请求)以尽可能的接收第一小区提供的广播业务，从而提升广播业务的覆盖，以及提升第一终端用户的用户体验。
可选的，在系统中存在RedCap终端和eRedCap终端的情况下，网络设备可以针对RedCap终端和eRedCap终端分别发送第一信息。针对RedCap终端和eRedCap终端分别发送的第一信息的指示可以相同也可以不同。例如，针对RedCap终端的第一信息指示第一小区支持向RedCap终端提供广播业务，针对eRedCap终端的第一信息指示第一小区不支持向eRedCap终端提供广播业务；或者，针对RedCap终端的第一信息指示第一小区不支持向RedCap终端提供广播业务，针对eRedCap终端的第一信息指示第一小区支持向eRedCap终端提供广播业务。
或者，在系统中存在RedCap终端和eRedCap终端的情况下，网络设备可以针对RedCap终端和eRedCap终端发送同一第一信息，此时，第一小区向RedCap终端和eRedCap终端提供广播业务的情况一致，如第一小区支持向RedCap终端和eRedCap终端提供广播业务，或者，第一小区不支持向RedCap终端和eRedCap终端提供广播业务。
以上对本申请实施例提供的通信方法的流程进行了说明。下面对该通信方法的具体实现进行介绍。
可选的，第一信息指示第一小区是否支持向第一终端提供广播业务，可能存在如下两种可能的实现：
在第一种可能的实现方式中，第一信息指示第一小区支持向第一终端提供的至少一个广播业务，和/或，第一信息指示第一小区不支持向第一终端提供的至少一个广播业务。
示例性的，以第一小区提供的广播业务包括广播业务1、广播业务2、和广播业务3为例。假设第一小区支持向第一终端提供广播业务1和广播业务2，不支持向第一终端提供广播业务3，那么第一信息可以指示第一小区支持向第一终端提供广播业务1和/或广播业务2，和/或第一信息可以指示第一小区不支持向第一终端提供的广播业务3。
可选的，在该第一种可能的实现方式中，第一信息可以携带在MCCH消息中。示例性的，MCCH消息可以包括以广播业务为粒度的MTCH的配置信息。第一信息可以携带在MTCH的配置信息中，也可以位于MTCH的配置信息外，本申请对此不作具体限定。
作为一种可能的实现，第一信息可以通过比特位图(或称为比特字符串)实现，如网络设备可以在 MCCH消息中携带比特位图。该比特位图包括X个比特，每个比特对应第一小区提供的一个广播业务，某个比特的取值可以指示第一小区是否支持向第一终端提供该比特对应的广播业务。例如，在某个比特的取值为第一数值时，表示第一小区支持向第一终端提供该比特对应的广播业务；在某个比特的取值为第二数值时，表示第一小区不支持向第一终端提供该比特对应的广播业务。第一数值例如可以为1，相应的，第二数值可以为0；或者，第一数值可以为0，相应的，第二数值可以为1。
作为另一种可能的实现，该第一信息可以通过枚举值实现，如MCCH消息中可以包括X个枚举字段，每个枚举字段对应第一小区提供的一个广播业务，某个枚举字段设置为“true”或“allowed”或“support”时，表示第一小区支持向第一终端提供该字段对应的广播业务。某个枚举字段设置为“false”或“notAllowed”或“notSupport”时，表示第一小区不支持向第一终端提供该字段对应的广播业务。示例性的，该X个枚举字段可以位于MTCH的配置信息外，或者，可以分别位于第一小区提供的X个广播业务的MTCH配置信息中，本申请实施例对此不作具体限定。
示例性的，以枚举字段位于MTCH配置信息中，第一小区提供的广播业务包括广播业务1、广播业务2、和广播业务3为例，网络设备可以在广播业务1对应的MTCH配置信息中包括枚举字段#1，在广播业务2对应的MTCH配置信息中包括枚举字段#2，在广播业务3对应的MTCH配置信息中包括枚举字段#3。其中，枚举字段#1、枚举字段#2、枚举字段#3分别指示第一小区是否支持向第一终端提供广播业务1、广播业务2、广播业务3。
可选的，在该第一种可能的实现方式中，网络设备可以分别为第一终端和第二终端进行MCCH配置和/或CFR配置。示例性的，第一小区的系统消息中可以包括如下信息：
{
mcch-Config#用于为第二终端配置MCCH；
cfr-ConfigMCCH-MTCH#用于为第二终端配置CFR；
…
mcch-ConfigRedCap#用于为第一终端配置MCCH；
cfr-ConfigMCCH-MTCH-RedCap#用于为第一终端配置CFR；
}
可选的，网络设备为第二终端配置的CFR可以大于为第一终端配置的CFR。示例性的，如图8所示，第二终端对应的CFR(记为CFR2)可以包括第一终端对应的CFR(记为CFR1)。网络设备还可以在CFR中配置CORESET，如在第二终端对应的CFR中配置CORESET#2，在第一终端对应的CFR中配置CORESET#1。
可选的，在分别为第一终端和第二终端配置CFR后，网络设备可以分别向第一终端和第二终端发送DCI1和DCI2，DCI1和DCI2用于将MCCH调度在相同的PDSCH资源上，即，第一终端和第二终端可以在相同的PDSCH资源上接收相同的MCCH消息。该MCCH消息可以包括上述第一信息。
可选的，该MCCH消息还可以包括至少一个广播业务对应的MTCH配置信息(也可以称为广播业务的配置信息)。示例性的，以第一小区提供广播业务1、广播业务2、广播业务3为例，该MCCH消息可以包括广播业务1、广播业务2、以及广播业务3的配置信息。如图8所示，广播业务1、广播业务2、广播业务3分别通过TMGI1、TMGI2、TMGI3标识。
可选的，对于第一小区支持向第一终端提供的广播业务，网络设备可以为第一终端和第二终端将该广播业务调度在相同的PDSCH资源上，或者，可以分别为第一终端和第二终端将该广播业务调度在不同的PDSCH资源上。
示例性的，以第一小区支持向第一终端提供广播业务1和广播业务2，不支持向第一终端提供广播业务3为例，如图8所示，网络设备可以分别为第一终端和第二终端在不同的PDSCH资源上调度广播业务1(图8中分别用MTCH1和MTCH2表示)，以及在相同的PDSCH资源上为第一终端和第二终端调度广播业务2(图8中以MTCH1表示)。此外，网络设备在更宽的频域资源/CORESET#2中为第二终端调度广播业务3。
可选的，对于第一小区支持向第一终端提供的广播业务，网络设备可以提供该广播业务的两套配置信息，分别用于第一终端和第二终端接收该广播业务。此时，网络设备可以将该广播业务调度在不同的PDSCH资源上，或者可以采用不同的配置将该广播业务调度到相同的PDSCH资源上。或者，网络设备可以提供该广播业务的一套配置，第一终端和第二终端均使用该套配置接收该广播业务，即，网络设备可以采用相同的配置将该广播业务调度在相同的PDSCH资源上。
在第二种可能的实现方式中，第一小区支持向第一终端提供第一小区的至少一个广播业务的情况下，第一信息指示第一小区支持向第一终端提供广播业务。示例性的，以第一小区提供广播业务1、广播业务2、广播业务3为例，只要第一小区支持向第一终端提供这三个广播业务中的至少一个广播业务，如支持向第一终端提供广播业务1，不支持向第一终端提供广播业务2和广播业务3，那么第一信息即指示第一小区支持向第一终端提供广播业务。
或者，第一小区支持向第一终端提供第一小区的所有广播业务的情况下，第一信息指示第一小区支持向第一终端提供广播业务。示例性的，以第一小区提供广播业务1、广播业务2、广播业务3为例，在第一小区支持向第一终端提供广播业务1、广播业务2、以及广播业务3的情况下，第一信息才指示第一小区支持向第一终端提供广播业务。
可选的，在该第二种可能的实现方式中，第一信息可以携带在第一小区的系统信息中，或者说，第一信息承载在第一小区的系统信息中。
作为一种可能的实现，该第一信息可以显式指示第一小区是否支持向第一终端提供广播业务。例如，第一信息可以通过1比特实现，在该比特的取值为第一数值时，表示第一信息指示第一小区支持向第一终端提供广播业务，在该比特的取值为第二数值时，表示第一信息指示第一小区不支持向第一终端提供广播业务。
或者，第一信息可以通过枚举值实现，如该第一信息所在的字段设置为“true”时，表示第一信息指示第一小区支持向第一终端提供广播业务。在该字段设置为“false”时，表示第一信息指示第一小区不支持向第一终端提供广播业务。
作为另一种可能的实现，该第一信息可以隐式指示第一小区是否支持向第一终端提供广播业务。例如，第一信息可以为网络设备配置的CFR的大小。在CFR大于第一终端的最大工作带宽的情况下，第一信息指示第一小区不支持向第一终端提供广播业务；在CFR小于或等于第一终端的最大工作带宽的情况下，第一信息指示第一小区支持向第一终端提供广播业务。
可选的，在该第二种可能的实现方式中，网络设备还可以发送第二信息，相应的，第一终端接收第二信息。其中，第二信息指示第一小区支持向第一终端(或第一类终端)提供的至少一个广播业务，和/或，第一小区不支持向第一终端(或第一类终端)提供的至少一个广播业务。
可选的，该第二信息可以携带在MCCH消息中。第二信息的相关实现可参考上述第一种可能的实现方式中第一信息的实现，在此不再赘述。
示例性的，第一小区支持向第一终端提供第一小区的至少一个广播业务时，第一信息即指示第一小区支持向第一终端提供广播业务的情况下，网络设备可以发送第二信息。
或者，第一小区支持向第一终端提供第一小区的所有广播业务时，第一信息才指示第一小区支持向第一终端提供广播业务的情况下，若第一信息指示第一小区不支持向第一终端提供广播业务，即存在第一小区不支持向第一终端提供的广播业务，或者说第一小区提供的所有广播业务并非都支持向第一终端提供，则网络设备可以发送第二信息。
在第一小区支持向第一终端提供第一小区的所有广播业务时，第一信息才指示第一小区支持向第一终端提供广播业务的情况下，若第一信息指示第一小区支持向第一终端提供广播业务，则网络设备可以发送第二信息，也可以不发送第二信息，本申请对此不作具体限定。
基于该第二信息，可以使得第一终端获知第一小区支持向其提供哪些广播业务，和/或，第一小区不支持向其提供哪些业务，从而确定第一小区是否支持向其提供感兴趣或正在接收的广播业务，进而在确定第一小区不支持向其提供该广播业务时采取措施(如发起单播连接请求)以尽可能的接收该广播业务。
可选的，在该第二种可能的实现方式中，网络设备可以不为第一终端进行专用的MCCH配置和CFR配置。即网络设备为第一终端和第二终端配置一套MCCH和CFR。示例性的，该CFR可以大于第一终端的带宽，此时，为了第一终端能够接收MCCH消息，如图9所示，网络设备可以将CORESET配置在第一终端的带宽内，以将MCCH消息调度在第一终端的带宽内。
可选的，对于第一小区支持向第一终端提供的广播业务，网络设备也需要将该广播业务调度在第一终端的带宽内。此时，第二终端也在第一终端的带宽内接收该广播业务。对于第一小区不支持向第一终端提供的广播业务，网络设备可以将该广播业务调度在第二终端的带宽内。
可选的，在上述图7所示的通信方法中，若第一信息指示第一小区支持向第一终端提供第一广播业务，则该通信方法还可以包括：发送第一配置信息，该第一配置信息为用于第一终端的第一广播业务的配置信息。相应的，第一终端接收该第一配置信息，并根据第一配置信息接收第一广播业务。
示例性的，该第一配置信息可以携带在MCCH消息中。进一步的，可以携带在MCCH消息中包括的第一广播业务的配置信息中。
可选的，若第一信息指示第一小区不支持向第一终端提供第一广播业务，则第一终端在收到第一信息后，可以确定不能通过广播方式接收第一小区提供的第一广播业务。
可选的，在第一信息指示第一小区不支持向第一终端提供第一广播业务的情况下，第一终端还可以发起单播接收请求，该单播接收请求用于请求通过单播方式接收第一广播业务。第一终端发起单播接收请求后，可以和网络设备建立单播连接，后续通过该单播连接接收第一广播业务。其中，第一终端发起单播接收请求，可以理解为：第一终端在当前小区发起单播接收请求。当前小区可以为第一终端当前驻留的小区或当前接入的服务小区。
或者，在第一信息指示第一小区不支持向第一终端提供第一广播业务的情况下，第一终端可以触发小区重选，或者，在下一次小区重选被触发时(触发条件可以为目前3GPP标准定义的小区重选触发条件)，尽可能重选到支持向第一终端提供广播业务的小区。
在一些实施例中，网络设备发送的MCCH消息或广播业务对应的PDSCH所在的物理资源块(physical resource block，PRB)可以是相对于CFR的位置来描述的，第一终端或第二终端需要根据CFR的位置确定该PDSCH所在的位置，比如确定该PDSCH的起始PRB和PRB的个数。PRB的个数表示分配的连续的PRB的长度，或者，PRB的个数表示PDSCH所占频域资源的长度或大小。PRB也可以替换为RB。
可选的，网络设备为第一终端和第二终端分别配置CFR的情况下，网络设备可以基于第一终端对应的CFR调度MCCH消息或广播业务对应的PDSCH，或者，可以基于第二终端对应的CFR调度MCCH消息或广播业务对应的PDSCH。网络设备为第一终端和第二终端配置一套相同的CFR的情况下，网络设备可以基于该CFR调度MCCH消息或广播业务对应的PDSCH，可选的，该CFR的带宽大小可以大于第一终端的工作带宽。
示例性的，基于CFR调度PDSCH，可以理解为：PDSCH所在的位置是相对于该CFR的位置来描述的。例如，假设CFR的起始位置为PRB10，网络设备调度的PDSCH所在的位置可能指示为：起始位置偏移5个PRB，PRB个数为3，那么该PDSCH的绝对位置即为：起始位置为PRB15，PRB个数为3，即该PDSCH位于PRB15-PRB17。
可选的，网络设备可以针对第一终端和第二终端分别提供DCI以调度MCCH消息，或针对第一终端和第二终端分别提供DCI以调度广播业务，或可以针对第一终端和第二终端提供一个DCI以调度MCCH消息，或针对第一终端和第二终端提供一个DCI以调度广播业务。
作为一种可能的实现，网络设备可以发送DCI关联的第一指示信息，该DCI用于调度MCCH消息对应的PDSCH或广播业务对应的PDSCH。其中，第一指示信息指示该第一指示信息关联的DCI调度的PDSCH是基于第一终端对应的CFR调度的还是基于第二终端对应的CFR调度的。示例性的，DCI包括第一指示信息。
可选的，在网络设备针对第一终端和第二终端分别提供DCI以调度MCCH消息，或针对第一终端和第二终端分别提供DCI以调度广播业务的情况下：网络设备可以发送第一DCI和第二DCI。
可选的，第一DCI关联的第一指示信息可以指示该第一DCI调度的PDSCH是基于第一终端对应的CFR调度的。
此时，第一DCI关联的第一指示信息还可以指示第一DCI是针对第一终端提供的，或者，第一指示信息还可以指示不允许第二终端接收该第一DCI调度的PDSCH，或者，第一指示信息还可以指示第二终端不接收该第一DCI调度的PDSCH，若第二终端收到该第一DCI，可以根据该第一DCI关联的第一指示信息确定该第一DCI是针对第一终端提供的，或第二终端可以不接收该第一DCI调度的PDSCH。在该PDSCH为某个广播业务对应的PDSCH时，该第一指示信息可以理解为上述第一信息，该第一信息指示第一小区向第一终端提供该广播业务，或第一小区正在向第一终端提供该广播业务，或第一信息指示第一小区向第一终端提供该广播业务的调度，或第一信息指示第一小区正在向第一终端提供该广播业务的调度，或第一信息指示第一小区当前发送的数据为向第一终端提供的该广播业务的数据。
或者，此时，第二终端收到该第一DCI后，可以根据第一偏移量确定该第一DCI调度的PDSCH所在的位置。其中，第一偏移量为第一终端对应的CFR的起始位置和第二终端对应的CFR的起始位置之间的偏移量。该第一偏移量可以在第一DCI中指示，如第一DCI包括第二指示信息，第二指示信息指示第一偏移量，或该第一偏移量也可以由第二终端根据第一终端对应的CFR的起始位置和第二终端对应的CFR的起始位置自行确定。
示例性的，第二终端可以根据第一偏移量确定第一DCI调度的PDSCH的起始位置和第二终端对应的CFR的起始位置之间的偏移，以确定该PDSCH的起始位置，再根据该PDSCH占用的PRB个数，确定PDSCH的位置。
例如，以第二终端对应的CFR的起始位置为PRB10，且结束位置为PRB30，第一终端对应的CFR的起始位置为PRB12，且结束位置为PRB20为例，则第一偏移量为2个PRB。假设第一DCI中指示PDSCH的起始位置偏移3个PRB，PRB个数为3，那么由于PDSCH是基于第一终端对应的CFR调度的，因此，实际上PDSCH的起始位置为PRB15。第二终端在确定PDSCH的起始位置时，可以在第二终端对应的CFR的起始位置(PRB10)上加上第一偏移量(2个PRB)，再加上DCI中指示的PDSCH的起始位置的偏移(即3个PRB)，得到该PDSCH的起始位置为PRB15，再根据PDSCH的大小为3个PRB，确定该PDSCH所在的位置为PRB15-PRB17。
可选的，第二DCI关联的第一指示信息可以指示该第二DCI调度的PDSCH是基于第二终端对应的CFR调度的。
此时，第二DCI关联的第一指示信息还可以指示第二DCI是针对第二终端提供的，或者，第一指示信息还可以指示不允许第一终端接收该DCI调度的PDSCH，或者，第一指示信息还可以指示第一终端不接收该DCI调度的PDSCH。若第一终端收到该第二DCI，可以根据该第二DCI关联的第一指示信息确定该第二DCI是针对第二终端提供的，或第一终端可以不接收该第二DCI调度的PDSCH。在该PDSCH为某个广播业务对应的PDSCH时，该第一指示信息可以理解为上述第一信息，该第一信息指示第一小区不向第一终端提供该广播业务，或者，第一信息指示第一小区当前不向第一终端提供该广播业务，或第一信息指示第一小区不向第一终端提供该广播业务的调度，或第一信息指示第一小区当前不向第一终端提供该广播业务的调度，或第一信息指示第一小区当前发送的数据不是向第一终端提供的该广播业务的数据。
或者，此时，第一终端收到该第二DCI后，可以根据第一偏移量确定该第二DCI调度的PDSCH所在的位置。其中，第一偏移量可参考上述相关说明。
示例性的，第一终端可以根据第一偏移量确定第二DCI调度的PDSCH的起始位置和第一终端对应的CFR的起始位置之间的偏移，以确定该PDSCH的起始位置，再根据PDSCH所占的PRB个数，确定该PDSCH的位置。
例如，以第二终端对应的CFR的起始位置为PRB10，且结束位置为PRB30，第一终端对应的CFR的起始位置为PRB12，且结束位置为PRB20为例，则第一偏移量为2个PRB。假设DCI中指示PDSCH的起始位置偏移5个PRB，PRB个数为3，那么由于PDSCH是基于第二终端对应的CFR调度的，因此，实际上PDSCH的起始位置为PRB15。第一终端在确定PDSCH的起始位置时，可以在第一终端对应的CFR的起始位置(PRB12)上减去第一偏移量(2个PRB)，再加上DCI中指示的PDSCH的起始位置的偏移(即5个PRB)，得到该PDSCH的起始位置为PRB15，再根据PDSCH的大小为3个PRB，确定该PDSCH所在的位置为PRB15-PRB17。
可选的，网络设备针对第一终端和第二终端提供一个DCI以调度MCCH消息，或针对第一终端和第二终端提供一个DCI以调度广播业务的情况下，网络设备可以发送第三DCI。
可选的，该第三DCI关联的第一指示信息可以指示该第三DCI调度的PDSCH是基于第一终端对应的CFR调度的，或者可以指示该第三DCI调度的PDSCH是基于第二终端对应的CFR调度的。两种情况下第一终端和第二终端确定PDSCH所在位置的方式可参考前述相关说明，在此不再赘述。
作为第二种可能的实现，网络设备可以针对第一终端和第二终端分别提供DCI以调度MCCH消息，或针对第一终端和第二终端分别提供DCI以调度广播业务。该场景下，网络设备为第一终端和第二终端分别提供的DCI可以采用不同的DCI格式，如分别采用DCI格式4_1和DCI格式4_2，即采用不同的DCI格式区分向第一终端和第二终端提供的DCI。
或者，网络设备为第一终端和第二终端分别提供的DCI可以采用不同的RNTI加扰。即采用不同的RNTI加扰来区分向第一终端和第二终端提供的DCI。
可选的，该第二种可能的实现中，针对第一终端提供的DCI所调度的PDSCH是基于第一终端对应的CFR调度的；针对第二终端提供的DCI所调度的PDSCH是基于第二终端对应的CFR调度的。
基于上述方案，通过在DCI中携带第一指示信息，或者通过不同的DCI格式或RNTI进行加扰以区分为第一终端和第二终端提供的DCI，可以使得第一终端和第二终端准确地确定MCCH消息或广播业务对应的PDSCH所在的位置，从而提高MCCH消息或广播业务的接收成功率，提高通信性能。
可选的，网络设备为第一终端和第二终端配置一套相同的CFR，且该CFR的带宽小于第一终端的工 作带宽的情况下，在网络设备基于该CFR调度MCCH消息或广播业务对应的PDSCH时，第一终端可以根据第二偏移量确定PDSCH所在的位置。其中，第二偏移量为该CFR的起始位置和第一终端的工作带宽的起始位置之间的偏移量。
示例性的，第一终端可以根据第二偏移量确定DCI调度的PDSCH的起始位置和第一终端的工作带宽的起始位置之间的偏移，以确定PDSCH的起始位置，再根据PDSCH的PRB个数，确定PDSCH的位置。
除图7所示方法外，本申请实施例还提供一种通信方法，该通信方法用于在引入第一类终端的场景下，对第二终端的行为进行相关设计。如图10所示，该通信方法包括如下步骤：
S1001、网络设备确定第三信息。
其中，第三信息指示是否允许第二终端接收向第一终端(或第一类终端)提供的MCCH消息。或者，第三信息指示是否允许第二终端接收向第一终端(或第一类终端)提供的广播业务。
可选的，第三信息指示是否允许第二终端接收向第一终端提供的MCCH消息或广播业务，也可以理解为：第三信息指示第二终端是否接收向第一终端提供的MCCH消息或广播业务。
可选的，网络设备可以分别为第一终端和第二终端进行MCCH配置和CFR配置。网络设备为第二终端配置的CFR可以大于为第一终端配置的CFR。示例性的，如图11所示，第二终端的对应CFR(记为CFR2)可以包括第一终端对应的CFR(记为CFR1)。网络设备还可以在CFR中配置CORESET，如在第二终端对应的CFR中配置CORESET#2，在第一终端对应的CFR中配置CORESET#1。
可选的，网络设备在分别为第一终端和第二终端配置CFR后，可以分别向第一终端和第二终端发送DCI3和DCI4，DCI3用于将向第一终端提供的MCCH消息调度在为第一终端配置的CFR中，DCI4用于将向第二终端提供的MCCH消息调度在为第二终端配置的CFR中。并且，如图11所示，DCI3和DCI4可以将向第一终端提供的MCCH消息和向第二终端提供的MCCH消息调度在不同的PDSCH资源上(图11中用MCCH1和MCCH2表示)。
可选的，对于第二终端来说，由于网络设备为第二终端配置的CFR大于为第一终端配置的CFR，因此，第二终端有能力接收网络设备向第一终端提供的MCCH消息或广播业务，从而，网络设备可以指示是否允许第二终端接收向第一终端提供的MCCH消息或广播业务。
可选的，网络设备向第一终端和第二终端提供的MCCH消息中可以包括广播业务的配置信息。对于同一广播业务，网络设备可以为第一终端和第二终端将该广播业务调度在相同的PDSCH资源上；或者，可以分别为第一终端和第二终端将该广播业务调度在不同的PDSCH资源上。比如，相比于为第一终端提供的该广播业务，为第二终端提供的该广播业务可以在更大的带宽上发送。
示例性的，如图11所示，网络设备可以为第一终端和第二终端将广播业务1调度在相同的PDSCH资源上(图11中用MTCH1表示)。或者，分别为第一终端和第二终端将广播业务2调度在不同的PDSCH资源上(图11中用MTCH1和MTCH2表示)。
可选的，在网络设备分别为第一终端和第二终端将广播业务调度在不同的PDSCH资源上时，由于第二终端有能力接收为第一终端提供的该广播业务，因此，网络设备可以指示是否允许第二终端接收向第一终端提供的广播业务。
S1002、网络设备发送第三信息。相应的，第二终端接收第三信息。
作为一种可能的实现，第三信息可以携带在系统信息中。该场景下，第三信息指示是否允许第二终端接收向第一终端提供的MCCH消息或广播业务，可以理解为：第三信息指示是否允许第二终端在一段时间内接收向第一终端提供的MCCH消息或广播业务。示例性的，该一段时间可以为预设或预配置的时间，或者，可以为当前时刻至第三信息或系统信息发生变更之前。系统信息例如可以为SIB1、SIB20、或SIB21等。
作为另一种可能的实现，第三信息可以携带在MCCH消息中。该MCCH消息可以为向第一终端提供的MCCH消息。该场景下，第三信息指示是否允许第二终端接收向第一终端提供的MCCH消息或广播业务，可以理解为：是否允许第二终端接收当前MCCH消息(即携带第三信息的MCCH消息)，或者，是否允许第二终端接收当前MCCH消息中携带的MTCH配置信息所对应的广播业务。
作为又一种可能的实现，第三信息可以携带在DCI中，或者第三信息与DCI关联。示例性的，第三信息可以携带在以下至少一种DCI中，或者第三信息与以下至少一种DCI关联，下述以第三信息携带在DCI中为例进行说明。
1)第三信息携带在用于调度向第一终端提供的MCCH消息的DCI中。该场景下，可以认为第三信息指示是否允许第二终端接收该DCI调度的MCCH消息，或者认为第三信息指示是否允许第二终端接收该 DCI调度的用于承载MCCH消息的PDSCH，或者认为第三信息指示第二终端是否接收该DCI调度的MCCH消息，或者认为第三信息指示第二终端是否接收该DCI调度的用于承载MCCH消息的PDSCH。
示例性的，第三信息可以指示该DCI调度的MCCH消息(或MCCH消息对应的PDSCH)是基于第一终端对应的CFR调度的，还是基于第二终端对应的CFR调度的。在基于第一终端对应的CFR进行调度的情况下，表示第三信息还指示不允许第二终端接收该DCI调度的MCCH消息或该MCCH消息对应的PDSCH；在基于第二终端对应的CFR进行调度的情况下，表示第三信息还指示允许第二终端接收该DCI调度的MCCH消息或该MCCH消息对应的PDSCH。
2)第三信息携带在用于调度向第一终端提供的广播业务的DCI中。该场景下，可以认为第三信息指示是否允许第二终端接收该DCI调度的广播业务，或者认为第三信息指示是否允许第二终端接收该DCI调度的用于承载广播业务的PDSCH，或者认为第三信息指示第二终端是否接收该DCI调度的广播业务，或者认为第三信息指示第二终端是否接收该DCI调度的用于承载广播业务的PDSCH。
示例性的，第三信息可以指示该DCI调度的广播业务(或广播业务对应的PDSCH)是基于第一终端对应的CFR调度的，还是基于第二终端对应的CFR调度的。在基于第一终端对应的CFR进行调度的情况下，表示第三信息还指示不允许第二终端接收该DCI调度的广播业务或用于广播业务对应的PDSCH；在基于第二终端对应的CFR进行调度的情况下，表示第三信息还指示允许第二终端接收该DCI调度的广播业务或广播业务对应的PDSCH。
可选的，网络设备可能基于第一终端对应的CFR调度MCCH消息对应的PDSCH或广播业务对应的PDSCH，或者可能基于第二终端对应的CFR调度MCCH消息对应的PDSCH或广播业务对应的PDSCH，或者可能基于为第一终端和第二终端配置的一套相同的CFR调度MCCH消息对应的PDSCH或广播业务对应的PDSCH。这些场景下DCI的实现以及第一终端和第二终端确定PDSCH所在位置的方式可参考上述相关说明，在此不再赘述。
可选的，网络设备可以在每次进行调度时都在DCI中携带第三信息，每次调度时DCI中携带的第三信息的指示可以相同也可以不同。例如，以上述情况1)为例，网络设备第一次调度向第一终端提供的MCCH消息时，在DCI中携带第三信息指示不允许第二终端接收当前DCI调度的MCCH消息；网络设备第二次调度向第一终端提供的MCCH消息时，在DCI中携带第三信息指示允许(或不允许)第二终端接收当前DCI调度的MCCH消息。本申请对此不作具体限定。
可选的，第三信息可以分别指示是否允许第二终端接收向第一终端提供的MCCH消息，以及指示是否允许第二终端接收向第一终端提供的广播业务。此时，可能存在如下表1所示的四种情况：
表1
示例性的，该场景下，第三信息可以通过2比特的4种不同取值实现。例如，该2比特的每种取值对应上述表1中的一种情况。或者，第三信息可以通过枚举值实现。例如，第三信息可以包括两个枚举值分别对应MCCH消息和广播业务，在MCCH消息对应的枚举值设置为“true”时，表示允许第二终端接收向第一终端提供的MCCH消息；在MCCH消息对应的枚举值设置为“false”时，表示不允许第二终端接收向第一终端提供的MCCH消息。是否允许第二终端接收向第一终端提供的广播业务的指示类似，不再赘述。
或者，第三信息可以共同指示是否允许第二终端接收向第一终端提供的MCCH消息和广播业务，即向第一终端提供的MCCH消息和广播业务的允许接收情况是一致的。此时，可能存在如下表2所示的两种情况：
表2
示例性的，该场景下，第三信息也可以通过1比特的取值实现，或者通过1个枚举值实现，可参考上一场景下的相关说明，在此不再赘述。
S1003、第二终端根据第三信息确定是否接收向第一终端提供的MCCH消息或广播业务。
可选的，该步骤S1003也可以理解为：第二终端根据第三信息确定是否被允许接收向第一终端提供的MCCH消息或广播业务。
可选的，在第三信息指示不允许接收向第一终端提供的MCCH消息或广播业务的情况下，第二终端可以确定不接收(或不被允许接收)向第一终端提供的MCCH消息或广播业务。此时，第二终端可以不接收向第一终端提供的MCCH消息或广播业务。若第二终端已经接收到了向第一终端提供的MCCH消息，如第三信息携带在MCCH消息中，第二终端接收MCCH消息后发现不被允许接收向第一终端提供的MCCH消息，则第二终端忽略MCCH消息中的配置，或者丢弃向第一终端提供的MCCH消息。
可选的，在第三信息指示允许接收向第一终端提供的MCCH消息或广播业务的情况下，第二终端可以确定接收(或被允许接收)向第一终端提供的MCCH消息或广播业务。此时，第二终端可以接收向第一终端提供的MCCH消息或广播业务，也可以不接收向第一终端提供的MCCH消息或广播业务。
基于该方案，网络设备发送第三信息指示是否允许第二终端接收向第一终端提供的MCCH消息或广播业务。在第三信息指示不允许第二终端接收向第一终端提供的MCCH消息或广播业务的情况下，可以节省第二终端的功耗。此外，由于第一终端和第二终端的资源配置粒度可能不同，若第二终端接收了向第一终端提供的MCCH消息或广播业务，则第二终端可能无法理解该MCCH消息或广播业务的内容，从而导致第二终端无法正常通信，影响用户体验。因此，第三信息可以指示不允许第二终端接收向第一终端提供的MCCH消息或广播业务，从而降低对第二终端的正常通信的影响，提高用户体验。
除上述图7和图10所示的方法外，本申请实施例还提供一种通信方法，用于在引入第一终端的场景下，对第一终端的移动性相关场景进行设计。如图12所示，该通信方法包括如下步骤：
S1201、网络设备确定第四信息。
其中，第四信息指示第二小区是否向第一终端(或第一类终端)提供第二广播业务。第二小区是第三小区的邻区，该网络设备为第三小区所属的网络设备，或者说，第三小区属于该网络设备。示例性的，第三小区可以为第一终端的服务小区或驻留小区。
其中，第二广播业务为第三小区提供的广播业务，或者，为第三小区正在提供的广播业务。或者，第二广播业务为第一终端感兴趣或正在接收的广播业务。
可选的，第二小区是否向第一终端提供第二广播业务，也可以理解为：第二小区是否正在向第一终端提供第二广播业务，或者，第二小区是否能够向第一终端提供第二广播业务，或者，第二小区提供的第二广播业务是否支持第一终端接收。
可选的，第三小区提供的第二广播业务可能支持第一终端接收，也可能不支持第一终端接收。网络设备可以指示第三小区提供的第二广播业务是否支持第一终端接收，指示方式可参考图7所示方法中的相关实现，在此不再赘述。
可选的，在第三小区提供的第二广播业务支持第一终端接收的情况下，第一终端可能正在第三小区接收第二广播业务，或者未在第三小区接收第二广播业务，本申请对此不作具体限定。
可选的，在第二小区所属的网络设备与第三小区所属的网络设备是不同的网络设备的情况下：第二小区所属的网络设备可以向第三小区所属的网络设备发送信息，以指示第二小区是否向第一终端提供第二广播业务。或者，第三小区所属的网络设备可以通过操作管理和维护(operation administration and maintenance，OAM)配置获知第二小区是否向第一终端提供第二广播业务。
S1202、网络设备发送第四信息。相应的，第一终端接收第四信息。
可选的，第四信息可以携带在MCCH消息(记为第一MCCH消息)中。示例性的，第一MCCH消息可以包括第二广播业务的配置信息，该第二广播业务的配置信息中可以包括第四信息。
作为一种可能的实现，第二广播业务的配置信息可以包括邻区列表，该邻区列表可以通过比特位图实现，即比特位图中的每个比特对应第三小区的一个邻区，通过某个比特的取值可以指示该比特对应的邻区是否向第一终端提供第二广播业务。其中，该比特位图对应的第三小区的邻区中包括第二小区，即第四信息可以通过1个比特的取值来实现。
示例性的，某个比特的取值为第一数值时，可以指示该比特对应的邻区向第一终端提供第二广播业务；或者，某个比特的取值为第二数值时，可以指示该比特对应的邻区不向第一终端提供第二广播业务。第一数值和第二数值可参考前述相关说明，在此不再赘述。
在该可能的实现中，网络设备还可以发送第七信息，第七信息指示第三小区的至少一个邻区，该至少一个邻区中的每个邻区提供(能够提供或正在提供)至少一个第四广播业务，第四广播业务为第三小区提供的广播业务。即，第七信息指示提供第三小区提供的一个或多个广播业务的该第三小区的至少一个邻区。其中，该至少一个邻区包括第二小区，至少一个第四广播业务中包括第二广播业务。示例性的，第七信息和第四信息可以携带在同一MCCH消息。
示例性的，第七信息可以通过MBS Broadcast Neighbour Cell List信元承载，或者，第七信息也可以称为MBS广播邻区列表信息。
示例性的，第七信息指示的邻区的数目与前述比特位图中的比特数相同。比特位图中的第一个比特可以对应第七信息指示的第一个邻区，比特位图中的第二个比特可以对应第七信息指示的第二个邻区，以此类推。
作为一种示例，第七信息指示的第三小区的邻区可以是第一类终端专用的，即第七信息指示向第一类终端提供第三小区提供的一个或多个广播业务的该第三小区的至少一个邻区。此时，若网络设备还指示第二小区是否向第二终端(或第二类终端)提供第二广播业务，那么网络设备需要针对第一类终端和第二类终端分别指示第三小区的邻区，以及分别指示第二小区是否向第一类终端和第二类终端提供第二广播业务。示例性的，以第一数值为1，第二数值为0为例，网络设备可以发送如下信息：
>MBS Broadcast Neighbour Cell List(MBS广播邻区列表)：
小区：A，B，C#指示针对第二类终端，提供第三小区提供的一个或多个广播业务的邻区为小区A、小区B和小区C。
>MBS Broadcast Neighbour Cell List-redcap：
小区：A，D#指示针对第一类终端，提供第三小区提供的一个或多个广播业务的邻区为小区A和小区D。
>>>>mtch-neighbourCell(邻区列表)：
TMGI 1：001#指示小区A和小区B不向第二类终端提供TMGI 1对应的广播业务，小区C向第二类终端提供TMGI 1对应的广播业务。
TMGI 2：100#指示小区A向第二类终端提供TMGI 2对应的广播业务，小区B和小区C不向第二类终端提供TMGI 2对应的广播业务。
>>>>mtch-neighbourCell-redcap：
TMGI 1：01#指示小区A不向第一类终端提供TMGI 1对应的广播业务，小区D向第一类终端提供TMGI 1对应的广播业务。
TMGI 2：11#指示小区A和小区D向第一类终端提供TMGI 2对应的广播业务。
作为另一种示例，第七信息指示的第三小区的邻区可以是第一类终端和第二类终端共用，即第七信息指示向第一类终端和第二类终端提供第三小区提供的一个或多个广播业务的该第三小区的至少一个邻区。示例性的，以第一数值为1，第二数值为0为例，网络设备可以发送如下信息：
>MBS Broadcast Neighbour Cell List(MBS广播邻区列表)：
小区：A，B，C#指示提供第三小区提供的一个或多个广播业务的邻区为小区A、小区B和小区C。
>>>>mtch-neighbourCell(邻区列表)：
TMGI 1：001#指示小区A和小区B不向第二类终端提供TMGI 1对应的广播业务，小区C向第二类终端提供TMGI 1对应的广播业务。
TMGI 2：100#指示小区A向第二类终端提供TMGI 2对应的广播业务，小区B和小区C不向第二类终端提供TMGI 2对应的广播业务。
>>>>mtch-neighbourCell-redcap：
TMGI 1：000#指示小区A、小区B和小区C均不向第一类终端提供TMGI 1对应的广播业务。
TMGI 2：110#指示小区A和小区B向第一类终端提供TMGI 2对应的广播业务，小区C不向第一类终端提供TMGI 2对应的广播业务。
作为另一种可能的实现，第四信息可以包括第二小区的标识及其对应的指示，该指示用于指示是否向第一终端提供第二广播业务。示例性的，该指示可以是1比特的indicator，或者可以是枚举值，本申请对此不作具体限定。
可选的，携带第四信息的第一MCCH消息可以是专用于第一类终端的MCCH消息。若网络设备还指示第二小区是否向第二终端(或第二类终端)提供第二广播业务，则网络设备可以发送用于第二类终端的 第二MCCH消息，在该第二MCCH消息中包括第八信息，第八信息指示第二小区是否向第二终端提供第二广播业务。此外，该第二MCCH消息也可以携带第四信息和第七信息。
在一种可能的实施方式中，第七信息指示的第三小区的邻区可能不提供任何广播业务，或者可能不提供第三小区提供的一个或多个广播业务。即，网络设备向终端设备指示的邻区不一定提供第三小区提供的一个或多个广播业务。基于该可能的实施方式，在第三小区提供的广播业务变化较快的情况下，可以避免网络设备频繁更新第三小区的邻区列表。
S1203、第一终端根据第四信息确定第二小区是否向第一终端提供第二广播业务。
可选的，在第四信息指示第二小区不向第一终端提供第二广播业务的情况下，第一终端确定第二小区不向第一终端提供第二广播业务。在第四信息指示第二小区向第一终端提供第二广播业务的情况下，第一终端确定第二小区向第一终端提供第二广播业务。
可选的，在网络设备还发送第七信息，第四信息通过比特位图中1个比特的取值表示的情况下，第一终端可以根据第四信息和第七信息确定第二小区是否向第一终端提供第二广播业务。例如，第一终端可以根据第七信息确定比特位图中第二小区对应的比特，再根据该比特的取值确定第二小区是否向第一终端提供第二广播业务。
可选的，第二小区不向第一终端提供第二广播业务，可以理解为：第二小区提供(或能够提供)第二广播业务，但第二小区不向第一终端提供该第二广播业务。例如，第二小区可以向第二终端提供该第二广播业务，但不向第一终端提供该第二广播业务。
可选的，若第二小区向第一终端提供第二广播业务，则第一终端在后续的小区重选过程中可以重选到第二小区以接收第二广播业务。若第二小区不向第一终端提供第二广播业务，则第一终端可以发起单播接收请求，该单播接收请求用于请求通过单播方式接收第二广播业务。
示例性的，该单播接收请求可以在第三小区发起，即可以请求在第三小区通过单播方式接收第二广播业务。后续，在小区重选过程中重选到第二小区时，或者在移动到第二小区时，第一终端可以继续和第二小区建立单播连接，以在第二小区通过单播方式接收第二广播业务。
基于该方案，网络设备发送第四信息指示第三小区的邻区是否向第一终端提供第二广播业务。能够使得第一终端在小区重选时根据第四信息重选到向第一终端提供第二广播业务的邻区，从而第一终端在第三小区正在接收第二广播业务的情况下，能够提升第二广播业务的连续性，或者第一终端在第三小区未接收第二广播业务，但对第二广播业务感兴趣的情况下，能够提高第二广播业务的接收成功率。
除图12所示的方法外，本申请实施例还提供一种CU-DU分离架构下的通信方法，用于在引入第一终端的场景下，对第一终端的移动性相关场景进行设计。如图19所示，该通信方法包括如下步骤：
S1901、CU确定第四信息。
其中，第四信息指示第二小区是否向第一终端(或第一类终端)提供第二广播业务，第二小区是第三小区的邻区。第二广播业务是第三小区提供的广播业务。可参考上述步骤S1201中的相关说明，在此不再赘述。
其中，CU管理的某个DU为第三小区所属的DU，或者说，第三小区属于该CU管理的某个DU。
可选的，第三小区提供的第二广播业务可能支持第一终端接收，也可能不支持第一终端接收。即该DU可能需要针对第一终端提供或发送第二广播业务，也可能不需要针对第一终端提供或发送第二广播业务。
S1902、CU向DU发送第四信息。相应的，DU接收来自CU的第四信息。
其中，第四信息的实现形式可以参考上述步骤S1202中的相关说明，在此不再赘述。
可选的，第四信息可以携带在以下至少一项中：邻区业务指示(mtch-NeighbourCell)：广播上下文建立请求(BROADCAST CONTEXT SETUP REQUEST)消息或广播上下文更改请求(BROADCAST CONTEXT MODIFICATION REQUEST)消息。
可选的，CU还可以向DU发送第七信息，第七信息指示第三小区的至少一个邻区，该邻区提供第三小区提供的一个或多个广播业务。第七信息指示的第三小区的邻区可以是第一类终端专用的，或者可以是第一类终端和第二类终端共用的。可参考上述步骤S1202中的相关说明，在此不再赘述。
示例性的，第七信息可以携带在以下至少一项中：F1建立响应(F1 SETUP RESPONSE)消息、DU配置更新确认(DU CONFIGURATION UPDATE ACKNOWLEDGE)消息、或CU配置更新(CU CONFIGURATION UPDATE)消息。
可选的，CU还可以向DU发送第八信息，第八信息指示第二小区是否向第二终端(或第二类终端)提供第二广播业务。第八信息的实现可以参考第四信息的相关说明，在此不再赘述。
示例性的，第八信息和第四信息可以携带在同一条消息中，也可以携带在两条消息中，本申请对此不作具体限定。
在一种可能的实施方式中，第七信息指示的第三小区的邻区可能不提供任何广播业务，或者可能不提供第三小区提供的一个或多个广播业务。可参考上述步骤S1202中的相关说明，在此不再赘述。
S1903、DU发送第一MCCH消息。相应的，第一终端接收第一MCCH消息。其中，第一MCCH消息包括第四信息。进一步的，第一MCCH消息还包括第七信息。
可选的，DU还可以发送第二MCCH消息，该第二MCCH消息用于第二类终端。该第二MCCH消息包括第八信息。该第二MCCH消息可以被第二类终端接收。其中，第二MCCH消息和第一MCCH消息为不同的MCCH消息。即DU可以针对第一类终端单独发送MCCH消息。
可选的，第二MCCH消息还可以包括第四信息，或者包括第四信息和第七信息。第二MCCH消息所在的频域资源位于第一终端的CFR中的情况下，该第二MCCH消息也可以被第一终端接收。此时，第一终端也可以根据第二MCCH消息中携带的第四信息执行下述步骤S1904。
S1904、第一终端根据第四信息确定第二小区是否向第一终端提供第二广播业务。可参考上述步骤S1203的相关说明，在此不再赘述。
可选的，第二终端收到第二MCCH消息后，可以根据第八信息确定第二小区是否向第二终端提供的第二广播业务，可以参考第一终端的相关实现，在此不再赘述。
在一种可能的实施方式中，在CU包括CU-CP和CU-CP的场景下，上述图19所示方法中，由CU实现的步骤/功能，可以由CU-CP实现。
基于该方案，CU向DU发送第四信息指示第三小区的邻区是否向第一终端提供第二广播业务，从而使得DU能够针对第一终端发送第一MCCH消息以携带第四信息，进而使得第一终端在小区重选时能够根据第四信息重选到向第一终端提供第二广播业务的邻区，使得第一终端在第三小区正在接收第二广播业务的情况下，能够提升第二广播业务的连续性，或者第一终端在第三小区未接收第二广播业务，但对第二广播业务感兴趣的情况下，能够提高第二广播业务的接收成功率。
除图19所示的方法外，本申请还提供一种CU-DU分离架构下的通信方法。如图20所示，该通信方法可以包括如下步骤：
S2001、CU向DU发送第一消息。相应的，DU接收来自CU的第一消息。
其中，第一消息与广播业务关联，或者，第一消息是per广播业务的，即第一消息是以广播业务为粒度的。为了方便说明，下述实施例中将第一消息关联的广播业务记为第二广播业务。即第一消息是第二广播业务关联的消息。在图20所示的方法中，第二广播业务可以是任一广播业务。
作为一种可能的实现，第一消息用于请求建立或修改第二广播业务的广播上下文。示例性的，第一消息可以为广播上下文建立请求(BROADCAST CONTEXT SETUP REQUEST)消息或广播上下文更改请求(BROADCAST CONTEXT MODIFICATION REQUEST)消息。
可选的，第一消息包括区域信息，该区域信息指示CU期望或请求提供第二广播业务的区域。示例性的，区域信息可以包括至少一个小区标识，表示CU期望或请求该至少一个小区标识指示的小区能够提供第二广播业务，该至少一个小区可以称为被请求提供第二广播业务的小区。该至少一个小区标识中可以包括该DU管理的部分或全部小区的标识，还可以包括其他DU管理的部分或全部小区的标识。
需要说明的是，步骤S2001为可选步骤，即CU也可以不发送第一消息。
S2002、DU向CU发送第二消息。相应的，CU接收来自DU的第二消息。
其中，第二消息与广播业务关联，或者，第二消息是per广播业务的，即第二消息是以广播业务为粒度的。为了方便说明，下述实施例中将第二消息关联的广播业务记为第二广播业务。即第二消息是第二广播业务关联的消息。
作为一种可能的实现，在步骤S2001被执行，即CU向DU发送了第一消息的情况下，第二消息可以为第一消息的响应消息。示例性的，第二消息可以用于答复建立或修改第二广播业务的广播上下文的请求。第二消息可以为广播上下文建立响应(BROADCAST CONTEXT SETUP RESPONSE)消息或广播上下文更改响应(BROADCAST CONTEXT MODIFICATION RESPONSE)消息。在步骤S2001未执行，即CU未向DU发送了第一消息的情况下，第二消息可以是DU向CU发送的与第二广播业务关联的任何消息，本申请对第二消息的类型或功能不作具体限定。
其中，第二消息包括第九信息和/或第十信息。第九信息指示第二广播业务对于第一终端发送的区域，或指示第二广播业务对应的广播会话对于第一终端发送的区域。第二广播业务对于第一终端发送的区域也 可以理解为：为第一终端发送第二广播业务的区域，或为第一终端发送或提供第二广播业务的小区。
或者，第九信息指示第二广播业务发送的区域，该区域对应于第一终端，或指示第二广播业务对应的广播会话发送的区域，该区域对应于第一终端。其中，“发送”可以理解为正在发送、成功发送、已经发送、提供、正在提供、成功提供、已经提供等。
可选的，第九信息可以通过指示全部或部分成功来指示第二广播业务对于第一终端发送的区域。例如，第九信息可以指示第一区域范围内的全部或部分小区为第一终端成功提供第二广播业务，或者指示第一区域范围内的全部或部分小区为第一终端成功建立第二广播业务对应的广播服务，或者指示第一区域范围内的全部或部分小区为第一终端成功传输第二广播业务。此时，第二广播业务对于第一终端发送的区域即为第一区域范围内的全部或部分小区。
其中，第一区域范围包括至少一个小区。第一区域范围内的小区也可以理解为被请求提供第二广播业务的小区。示例性的，第一区域范围可以是DU管理的全部小区；或者，第一区域范围可以是上述区域信息指示的区域。例如，CU未发送区域信息的情况下，第一区域范围可以是DU管理的全部小区；CU向DU发送了区域信息的情况下，第一区域范围可以是DU管理的全部消息，也可以是区域信息指示的区域，不予限制。
作为一种可能的实现，第九信息指示全部成功可以理解为：第九信息指示第一区域范围内DU管理的所有小区均为第一终端成功提供第二广播业务，或者均为第一终端成功建立第二广播业务对应的广播服务，或者均为第一终端成功传输第二广播业务。第九信息指示部分成功可以理解为：第九信息指示第一区域范围内DU管理的部分小区为第一终端成功提供第二广播业务，或者部分小区为第一终端成功建立第二广播业务对应的广播服务，或者部分小区为第一终端成功传输第二广播业务。也就是说，第九信息可以指示为第一终端成功提供第二广播业务的小区。
示例性的，以第一区域范围包括小区1、小区2、小区3、小区4，小区1、小区2和小区3为DU管理的小区为例，若第九信息指示全部成功，则小区1、小区2和小区3均为第一终端成功提供第二广播业务，第二广播业务对于第一终端发送的区域为小区1、小区2和小区3；若第九信息指示部分成功，则小区1、小区2和小区3中的部分小区为第一终端成功提供第二广播业务，第二广播业务对于第一终端发送的区域包括小区1、小区2、小区3中的部分小区。可以理解的，小区1、小区2和小区3可以是DU管理的部分小区，也可以是DU管理的全部小区。
示例性的，第九信息可以通过RedCap广播区域范围(BroadcastAreaScope-redcap)信元承载，或者，第九信息也可以称为RedCap广播区域范围或RedCap广播区域范围指示信息。当然，第九信息也可以通过其他信元承载，也可以有其他名称，上述信元名称和信元不构成限定。
示例性的，以第九信息通过BroadcastAreaScope-redcap信元承载为例，若第九信息指示全部成功，则BroadcastAreaScope-redcap信元可以设置为CompleteSuccess。若第九信息指示部分成功，则BroadcastAreaScope-redcap信元可以设置为PartialSuccess。此外，BroadcastAreaScope-redcap信元设置为PartialSuccess的情况下，BroadcastAreaScope-redcap信元还可以包括为第一终端提供第二广播业务的部分小区的标识，如小区全球标识(cell global identity，CGI)。示例性的，该小区的标识可以位于广播小区列表(Broadcast Cell List)中。
第十信息可能存在如下三种实现：
作为第一种可能的实现，第十信息指示第二广播业务对于第二终端发送的区域，或者指示第二广播业务对应的广播会话对于第二终端发送的区域。第二广播业务对于第二终端发送的区域也可以理解为：为第二终端发送第二广播业务的区域，或为第二终端发送或提供第二广播业务的小区。
或者，第十信息指示第二广播业务发送的区域，该区域对应于第二终端，或指示第二广播业务对应的广播会话发送的区域，该区域对应于第二终端。其中，“发送”可以理解为正在发送、成功发送、已经发送、提供、正在提供、成功提供、已经提供等。
可选的，第十信息可以通过指示全部或部分成功来指示第二广播业务对于第二终端发送的区域。例如，第十信息可以指示第一区域范围内的全部或部分小区为第二终端成功提供第二广播业务，或者指示第一区域范围内的全部或部分小区为第二终端成功建立第二广播业务对应的广播服务，或者指示第一区域范围内的全部或部分小区为第二终端成功传输第二广播业务。此时，第二广播业务对于第二终端发送的区域即为第一区域范围内的全部或部分小区。第一区域范围可参考前述相关说明，在此不再赘述。
可选的，第十信息指示全部成功可以理解为：第十信息指示第一区域范围内DU管理的所有小区均为第二终端成功提供第二广播业务，或者均为第二终端成功建立第二广播业务对应的广播服务，或者均为第 二终端成功传输第二广播业务。第十信息指示部分成功可以理解为：第十信息指示第一区域范围内DU管理的部分小区为第二终端成功提供第二广播业务，或者部分小区为第二终端成功建立第二广播业务对应的广播服务，或者部分小区为第二终端成功传输第二广播业务。也就是说，第十信息可以指示为第二终端成功提供第二广播业务的小区。
示例性的，第十信息可以通过广播区域范围(BroadcastAreaScope)信元承载，或者，第十信息也可以称为广播区域范围或广播区域范围指示信息。当然，第十信息也可以通过其他信元承载，也可以有其他名称，上述信元名称和信元不构成限定。可参考上述第九信息的相关说明，在此不再赘述。
可选的，第十信息采用该第一种可能的实现时，DU可以向CU发送第九信息，不发送第十信息，相应的，CU可以根据第九信息获知DU管理的为第一终端提供第二广播业务的小区；或者，可以发送第十信息，不发送第九信息，相应的，CU可以根据第十信息获知DU管理的为第二终端提供第二广播业务的小区；或者可以发送第九信息和第十信息，相应的，CU可以根据第九信息获知DU管理的为第一终端提供第二广播业务的小区，以及根据第十信息获知为第二终端提供第二广播业务的小区。其中，第九信息和第十信息可以携带在一条消息中，也可以携带在不同消息中，对此不作具体限定。
示例性的，以DU向CU发送第九信息和第十信息，第九信息指示小区1和小区2为第一终端成功提供第二广播业务，第十信息指示小区1、小区2和小区3为第二终端成功提供第二广播业务为例，则第十信息和第九信息可以通过如下形式实现：
作为第二种可能的实现，第十信息指示第二广播业务对于第一终端和/或第二终端发送的区域，或者指示第二广播业务对应的广播会话对于第一终端和/或第二终端发送的区域。第二广播业务对于第一终端和/或第二终端发送的区域也可以理解为：为第一终端和/或第二终端发送第二广播业务的区域，或者为第一终端和/或第二终端提供第二广播业务的小区。
或者，第十信息指示第二广播业务发送的区域，该区域对应于第一终端和/或第二终端，或指示第二广播业务对应的广播会话发送的区域，该区域对应于第一终端和/或第二终端。其中，“发送”可以理解为正在发送、成功发送、已经发送、提供、正在提供、成功提供、已经提供等。
可选的，第十信息可以通过指示全部或部分成功来指示第二广播业务对于第一终端和/或第二终端发送的区域。例如，第十信息可以指示第一区域范围内的全部或部分小区为第一终端和/或第二终端成功提供第二广播业务，或者指示第一区域范围内的全部或部分小区为第一终端和/或第二终端成功建立第二广播业务对应的广播服务，或者指示第一区域范围内的全部或部分小区为第一终端和/或第二终端成功传输第二广播业务。此时，第二广播业务对于第一终端和/或第二终端发送的区域即为第一区域范围内的全部或部分小区。第一区域范围可参考前述相关说明，在此不再赘述。
示例性的，第十信息指示全部成功可以理解为：第十信息指示第一区域范围内DU管理的所有小区均为第一终端和/或第二终端成功提供第二广播业务，或者均为第一终端和/或第二终端成功建立第二广播业务对应的广播服务，或者均为第一终端和/或第二终端成功传输第二广播业务。第十信息指示部分成功可以理解为：第十信息指示第一区域范围内DU管理的为第一终端和/或第二终端成功提供第二广播业务，或者部分小区为第一终端和/或第二终端成功建立第二广播业务对应的广播服务，或者部分小区为第一终端和/或第二终端成功传输第二广播业务。也就是说，第十信息可以指示成功提供第二广播业务的小区。
可选的，该实现中，只要DU管理的被请求提供第二广播业务的小区中，存在能够为第一终端或第二终端中的至少一项提供第二广播业务的小区，DU即可向CU发送第十信息。
例如，以第一区域范围包括小区1、小区2、小区3、小区4，小区1、小区2和小区3为DU管理的 小区为例，若小区1和小区2为第一终端提供第二广播业务，小区3为第二终端提供第二广播业务，则第十信息指示全部成功；若小区1为第一终端提供第二广播业务，小区2为第二终端提供第二广播业务，小区3不提供第二广播业务，则第十信息指示部分成功，且DU还可以向CU指示小区1和小区2的标识。示例性的，第十信息可以通过广播区域范围(BroadcastAreaScope)信元承载。在第十信息指示部分成功的情况下，BroadcastAreaScope信元还可以包括该部分小区的标识。可参考上述第一种可能的实现中的相关说明，在此不再赘述。
可以理解的，在该第二种可能的实现中，CU可以根据第十信息获知DU管理的小区中提供第二广播业务的小区，但无法获知该第二广播业务是为第一终端提供的还是为第二终端提供的，或者是为第一终端和第二终端提供的。
可选的，第十信息采用该第二种可能的实现时，DU可以向CU发送第九信息，不发送第十信息，相应的，CU可以根据第九信息获知DU管理的为第一终端提供第二广播业务的小区。
或者，DU可以向CU发送第十信息，不发送第九信息，相应的，CU可以根据第十信息获知DU管理的提供第二广播业务的小区，但无法获知该第二广播业务是为第一终端提供的还是为第二终端提供的，或者是为第一终端和第二终端提供的。
或者，DU可以向CU发送第九信息和第十信息，相应的，CU可以根据第九信息获知DU管理的为第一终端提供第二广播业务的小区，以及根据第九信息和第十信息获知为第二终端提供第二广播业务的小区。例如，为第二终端提供第二广播业务的小区为第十信息指示的小区和第九信息指示的小区的差集。
以第九信息指示的为第一终端提供第二广播业务的小区为小区1、小区2为例，若第十信息指示的第一终端和/或第二终端提供第二广播业务的小区为小区1、小区2、小区3和小区4，则为第二终端提供第二广播业务的小区为小区3和小区4。
在DU向CU发送第九信息和第十信息的情况下，第九信息和第十信息可以携带在一条消息中，也可以携带在不同消息中，对此不作具体限定。
作为第三种可能的实现，第十信息指示第二广播业务对于第一终端和第二终端发送的区域，或者指示第二广播业务对应的广播会话对于第一终端和第二终端发送的区域。第二广播业务对于第一终端和第二终端发送的区域也可以理解为：为第一终端和第二终端发送第二广播业务的区域，或者为第一终端和第二终端提供第二广播业务的小区。
或者，第十信息指示第二广播业务发送的区域，该区域对应于第一终端和第二终端，或指示第二广播业务对应的广播会话发送的区域，该区域对应于第一终端和第二终端。其中，“发送”可以理解为正在发送、成功发送、已经发送、提供、正在提供、成功提供、已经提供等。
可选的，第十信息可以通过指示全部或部分成功来指示第二广播业务对于第一终端和第二终端发送的区域。例如，第十信息可以指示第一区域范围内的全部或部分小区为第一终端和第二终端成功提供第二广播业务，或者指示第一区域范围内的全部或部分小区为第一终端和第二终端成功建立第二广播业务对应的广播服务，或者指示第一区域范围内的全部或部分小区为第一终端和第二终端成功传输第二广播业务。此时，第二广播业务对于第一终端和第二终端发送的区域即为第一区域范围内的全部或部分小区。第一区域范围可参考前述相关说明，在此不再赘述。
示例性的，第十信息指示全部成功可以理解为：第十信息指示第一区域范围内DU管理的所有小区均为第一终端和第二终端成功提供第二广播业务，或者均为第一终端和第二终端成功建立第二广播业务对应的广播服务，或者均为第一终端和第二终端成功传输第二广播业务。第十信息指示部分成功可以理解为：第十信息指示第一区域范围内DU管理的部分小区为第一终端和第二终端成功提供第二广播业务，或者部分小区为第一终端和第二终端成功建立第二广播业务对应的广播服务，或者部分小区为第一终端和第二终端成功传输第二广播业务。也就是说，第十信息可以指示为第一终端和第二终端成功提供第二广播业务的小区。
可选的，该实现中，在DU管理的被请求提供第二广播业务的小区中，存在能够为第一终端和第二终端均提供第二广播业务的小区时，DU才向CU发送第十信息。
例如，以第一区域范围包括小区1、小区2、小区3、小区4，小区1、小区2和小区3为DU管理的小区为例，若小区1、小区2和小区3中的每个小区均为第一终端和第二终端提供第二广播业务，则第十信息指示全部成功；若小区1为第一终端提供第二广播业务，小区2为第二终端提供第二广播业务，小区3为第一终端和第二终端提供第二广播业务，则第十信息指示部分成功，且DU还可以向CU指示小区3的标识。
示例性的，第十信息可以通过广播区域范围(BroadcastAreaScope)信元承载。在第十信息指示部分成功的情况下，BroadcastAreaScope信元还可以包括该部分小区的标识。可参考上述第一种可能的实现中的相关说明，在此不再赘述。
示例性的，在该第三种可能的实现中，BroadcastAreaScope信元被设置为CompleteSuccess时，CU可以获知DU管理的被请求提供第二广播业务的小区中的每个小区均能够为第一终端和第二终端提供第二广播业务。BroadcastAreaScope信元被设置为PartialSuccess时，CU可以获知BroadcastAreaScope信元中包括的每个小区标识对应的小区均能够为第一终端和第二终端提供第二广播业务。
可选的，第十信息采用该第三种可能的实现时，DU可以向CU发送第九信息，不发送第十信息，相应的，CU可以根据第九信息获知DU管理的为第一终端提供第二广播业务的小区。
或者，DU可以向CU发送第十信息，不发送第九信息，相应的，CU可以根据第十信息获知DU管理的为第一终端和第二终端提供第二广播业务的小区。
或者，DU可以向CU发送第九信息和第十信息，相应的，CU可以根据第九信息获知DU管理的为第一终端提供第二广播业务的小区，根据第十信息获知DU管理的为第一终端和第二终端提供第二广播业务的小区，以及根据第九信息和第十信息获知为第一终端提供第二广播业务，但不为第二终端提供第二广播业务的小区。例如，为第一终端提供第二广播业务，但不为第二终端提供第二广播业务的小区为：第十信息指示的小区和第九信息指示的小区的差集。
在DU向CU发送第九信息和第十信息的情况下，第九信息和第十信息可以携带在一条消息中，也可以携带在不同消息中，对此不作具体限定。
基于上述方案，能够使得CU获知DU对于不同业务的提供情况，进一步的，还可以使得CU获知DU针对不同终端提供不同业务的情况，从而有利于CU进行后续处理。
如图21所示，本申请还提供一种通信方法，该方法可以应用于CU-DU分离架构下，CU关联多个DU的场景，用于在引入第一终端时，对第一终端的移动性相关场景进行设计。以CU管理的DU包括第一DU和第二DU，第一DU管理的小区包括第三小区，第二DU管理的小区包括第二小区为例，参见图21，该通信方法包括如下步骤：
S2101、CU向第二DU发送第三消息。相应的，第二DU接收来自CU的第三消息。
其中，第三消息为第二广播业务关联的消息。可选的，第三消息可以包括区域信息，该区域信息指示CU期望或请求提供第二广播业务的区域。第三消息的实现可参考上述步骤S2001中第一消息的相关描述，在此不再赘述。需要说明的是，步骤S2101为可选步骤，即CU也可以不发送第三消息。
S2102、第二DU向CU发送第四消息。相应的，第二DU接收来自CU的第四消息。
其中，第四消息为第二广播业务关联的消息。在CU发送了第三消息的情况下，第四消息可以为第三消息的响应消息；在CU未发送第三消息的情况下，第四消息可以是第二DU向CU发送的与第二广播业务关联的任何消息。第四消息的实现可参考上述步骤S2002中第二消息的相关描述，在此不再赘述。
其中，第四消息包括第十一信息和/或第十二信息。
作为一种可能的实现，第十一信息指示第二广播业务对于第一终端发送的区域，或指示第二广播业务对应的广播会话对于第一终端发送的区域。第二广播业务对于第一终端发送的区域也可以理解为：为第一终端发送第二广播业务的区域，或为第一终端发送或提供第二广播业务的小区。
或者，第十一信息指示第二广播业务发送的区域，该区域对应于第一终端，或指示第二广播业务对应的广播会话发送的区域，该区域对应于第一终端。其中，“发送”可以理解为正在发送、成功发送、已经发送、提供、正在提供、成功提供、已经提供等。第十一信息的实现可参考上述步骤S2002中第九信息的相关描述，在此不再赘述。
作为第一种可能的实现，第十二信息指示第二广播业务对于第二终端发送的区域，或者指示第二广播业务对应的广播会话对于第二终端发送的区域。第二广播业务对于第二终端发送的区域也可以理解为：为第二终端发送第二广播业务的区域，或为第二终端发送或提供第二广播业务的小区。或者，第十二信息指示第二广播业务发送的区域，该区域对应于第二终端，或指示第二广播业务对应的广播会话发送的区域，该区域对应于第二终端。可参考上述第十信息的第一种可能的实现，在此不再赘述。
作为第二种可能的实现，第十二信息指示第二广播业务对于第一终端和/或第二终端发送的区域，或者指示第二广播业务对应的广播会话对于第一终端和/或第二终端发送的区域。第二广播业务对于第一终端和/或第二终端发送的区域也可以理解为：为第一终端和/或第二终端发送第二广播业务的区域，或者为第一终端和/或第二终端提供第二广播业务的小区。或者，第十二信息指示第二广播业务发送的区域，该区域对 应于第一终端和/或第二终端，或指示第二广播业务对应的广播会话发送的区域，该区域对应于第一终端和/或第二终端。可参考上述第十信息的第二种可能的实现，在此不再赘述。
作为第三种可能的实现，第十二信息指示第二广播业务对于第一终端和第二终端发送的区域，或者指示第二广播业务对应的广播会话对于第一终端和第二终端发送的区域。第二广播业务对于第一终端和第二终端发送的区域也可以理解为：为第一终端和第二终端发送第二广播业务的区域，或者为第一终端和第二终端提供第二广播业务的小区。或者，第十二信息指示第二广播业务发送的区域，该区域对应于第一终端和第二终端，或指示第二广播业务对应的广播会话发送的区域，该区域对应于第一终端和第二终端。可参考上述第十二信息的第二种可能的实现，在此不再赘述。
S2103、CU根据十一信息或第十二信息确定第四信息。
其中，第四信息指示第二小区是否向第一终端(或第一类终端)提供第二广播业务，第二小区是第三小区的邻区。第二广播业务是第三小区提供的广播业务。
可选的，第二广播业务是第三小区提供的广播业务、第二小区是否向第一终端提供第二广播业务、第三小区提供的第二广播业务是否支持第一终端接收、第三小区提供的第二广播业务支持第一终端接收的情况下，第一终端是否正在第三小区接收第二广播业务的具体实现，可参考上述步骤S1201中的相关说明，在此不再赘述。
在一种可能的实现中，在第四消息包括第十一信息的情况下，CU根据第十一信息确定第四信息。例如，第十一信息指示的第二DU管理的小区为向第一终端提供第二广播业务的小区，或第十一信息未指示的第二DU管理的小区为不向第一终端提供第二广播业务的小区。以第二小区为第二DU管理的小区为例，若第十一信息指示的第二DU管理的小区包括第二小区，则第二小区向第一终端提供第二广播业务；若第十一信息未指示的第二DU管理的小区包括第二小区，则第二消息不向第一终端提供第二广播业务。
在另一种可能的实现中，在第四消息包括第十二信息，第十二信息指示第二广播业务对于第一终端和第二终端发送的区域的情况下，CU根据第十二信息确定第四信息。例如，第十二信息指示的第二DU管理的小区为向第一终端提供第二广播业务的小区，或第十二信息未指示的第二DU管理的小区为不向第一终端提供第二广播业务的小区。以第二小区为第二DU管理的小区为例，若第十二信息指示的第二DU管理的小区包括第二小区，则第二小区向第一终端提供第二广播业务；若第十二信息未指示的第二DU管理的小区包括第二小区，则第二消息不向第一终端提供第二广播业务。
可选的，CU还可以根据第十二信息，或者根据第十一信息和第十二信息确定为第二终端提供第二广播业务的小区。例如，第十二信息采用上述第一种或第三种可能的实现方式时，第十二信息指示的第二DU管理的小区为向第二终端提供第二广播业务的小区，或第十二信息未指示的第二DU管理的小区为不向第二终端提供第二广播业务的小区。以第二小区为第二DU管理的小区为例，若第十二信息指示的第二DU管理的小区包括第二小区，则第二小区向第二终端提供第二广播业务；若第十二信息未指示的第二DU管理的小区包括第二小区，则第二消息不向第二终端提供第二广播业务。
又例如，第十二信息采用上述第二种可能的实现方式时，向第二终端提供第二广播业务的小区为第十二信息指示的小区和第十一信息指示的小区的差集。若该差集中包括第二小区，则第二小区向第二终端提供第二广播业务；若该差集中不包括第二小区，则第二小区不向第二终端提供第二广播业务。
需要说明的是，本实施例仅以CU关联第一DU和第二DU为例进行说明。当然，CU可以关联两个以上的DU，例如，CU还关联第三DU。该场景下，CU可以从其关联的每个DU获取各个DU对于不同业务的提供情况，从而根据各个DU提供业务的情况，确定第四信息。
S2104、CU向第一DU发送第四信息。相应的，CU接收来自第一DU的第四信息。其中，第四信息的实现形式可参考上述步骤S1202中的相关说明，在此不再赘述。
可选的，第四信息可以携带在邻区业务指示(mtch-NeighbourCell)、广播上下文建立请求消息、或广播上下文更改请求消息中。
可选的，CU还可以向第一DU发送第七信息，第七信息指示第三小区的至少一个邻区，该邻区提供第三小区提供的一个或多个广播业务。第七信息指示的第三小区的邻区可以是第一类终端专用的，或者可以是第一类终端和第二类终端共用的。可参考上述步骤S1202和步骤S1902中的相关说明，在此不再赘述。
可选的，CU还可以向第一DU发送第八信息，第八信息指示第二小区是否向第二终端(或第二类终端)提供第二广播业务。可参考上述步骤S1902中的相关说明，在此不再赘述。
上述方案中，以CU根据第二DU针对不同业务的提供情况(该提供情况通过第十一信息和/或第十二信息指示)，确定第一DU管理的小区对应的邻区列表为例进行说明。当然，CU也可以根据第一DU针对 不同业务的提供情况，确定第二DU管理的小区对应的邻区列表，并向第二DU指示该邻区列表。可参考前述相关描述，在此不再赘述。
此外，CU向第一DU指示的邻区列表中可以包括第一DU管理的小区，向第二DU指示的邻区列表中也可以包括第二DU管理的小区。
S2105、第一DU发送第一MCCH消息。相应的，第一终端接收第一MCCH消息。其中，第一MCCH消息包括第四信息。进一步的，第一MCCH消息还包括第七信息。
可选的，第一DU还可以发送第二MCCH消息，该第二MCCH消息用于第二类终端。该第二MCCH消息包括第八信息。进一步的，第二MCCH消息还可以包括第四信息，或者包括第四信息和第七信息。可参考上述步骤S1903中的相关说明，在此不再赘述。
S2106、第一终端根据第四信息确定第二小区是否向第一终端提供第二广播业务。可参考上述步骤S1203的相关说明，在此不再赘述。
可选的，第二终端收到第二MCCH消息后，可以根据第八信息确定第二小区是否向第二终端提供的第二广播业务，可以参考第一终端的相关实现，在此不再赘述。
基于该方案，在CU关联多个DU的情况下，CU可以通过某个DU(即第二DU)提供的广播区域范围指示信息，感知该DU为不同终端提供广播业务的情况，使得CU能够向另一DU(即第一DU)指示第二DU为不同终端提供广播业务的情况，从而使得第一DU能够针对第一终端发送第一MCCH消息以携带第四信息，进而使得第一终端在小区重选时能够根据第四信息重选到向第一终端提供第二广播业务的邻区，使得第一终端在第三小区正在接收第二广播业务的情况下，能够提升第二广播业务的连续性，或者第一终端在第三小区未接收第二广播业务，但对第二广播业务感兴趣的情况下，能够提高第二广播业务的接收成功率。
在一种可能的实施方式中，在CU包括CU-CP和CU-CP的场景下，上述图20或图21所示方法中，由CU实现的步骤/功能，可以由CU-CP实现。此外，上述图20或图21所示的方法也可以适用于ORAN场景。
除图12所示的方法外，本申请实施例还提供一种通信方法，对第一终端的移动性相关场景进行设计。如图13所示，该通信方法包括如下步骤：
S1301、网络设备确定第五信息。
其中，第五信息包括第一FSAI以及第一FSAI对应的第一频点。第一频点是为第一终端(或第一类终端)提供第一FSAI对应的广播业务的频点。
需要说明的是，本申请实施例中的“频点”也可以称为“频率”，或者“频带”，二者可以相互替换，在此统一说明，后续实施例不再赘述。
可选的，第一频点是为第一终端提供第一FSAI对应的广播业务的频点，可以理解为：第一频点是可能为/将要为/能够为第一终端提供第一FSAI对应的广播业务的频点。
可选的，第五信息还包括第一FSAI对应的第二频点，第二频点是为第二终端提供第一FSAI对应的广播业务的频点。
可选的，第二频点是为第二终端提供第一FSAI对应的广播业务的频点，可以理解为：第二频点是可能为/将要为/能够为第二终端提供第一FSAI对应的广播业务的频点。
也就是说，对于同一FSAI，网络设备可以为该FSAI配置两种频点。其中一种频点是为第一终端提供该FSAI对应的广播业务的频点，另一种频点是为第二终端提供该FSAI对应的广播业务的频点。此外，网络设备为同一FSAI配置两种频点可以相同，也可以不相同，本申请对此不作具体限制。
S1302、网络设备发送第五信息。相应的，第一终端接收第五信息。
可选的，第五信息可以携带在小区的系统信息中。示例性的，该系统信息可以为SIB21。
S1303、第一终端将第一频点的小区重选优先级设置为最高优先级。
可选的，第一终端可以根据MBS USD确定其正在接收或期望接收或感兴趣的广播业务对应的FSAI。若该FSAI为第一FSAI，即第一FSAI对应的广播业务为第一终端正在接收或期望接收或感兴趣的广播业务，则第一终端可以将第一频点的小区重选优先级设置为最高优先级。即第一终端在小区重选时，可以认为第一频点的优先级最高。
也就是说，第一终端的MBS USD中指示了第一终端正在接收或期望接收或感兴趣的广播业务对应的FSAI，且相同的FSAI包括在网络设备下发的信息(如系统信息)中，那么第一终端可以将该信息中的该FSAI对应的特定频点的优先级设置为最高优先级。其中，该特定频点是为第一终端提供其正在接收或期望 接收或感兴趣的广播业务的频点。
基于该方案，网络设备可以针对FSAI指示为第一终端提供该FSAI对应的广播业务的频点。使得第一终端可以将该频点的小区重选优先级设置为最高优先级，从而增加第一终端重选到第一频点上的小区的概率，从而第一终端在当前小区正在接收该广播业务的情况下，能够提升该广播业务的连续性，或者第一终端在当前小区未接收该广播业务，但对该广播业务感兴趣或期望接收该广播业务的情况下，能够提高该广播业务的接收成功率。
此外，本申请实施例还提供一种与第一终端的移动性相关的通信方法，如图14所示，该通信方法包括如下步骤：
S1401、第一终端获取第六信息。
其中，第六信息包括第一频点。第一频点为第一FSAI对应的频点，或者，第一频点为第三广播业务对应的频点。
其中，第三广播业务为第一终端正在接收或感兴趣或期望接收的广播业务。第一FSAI为第三广播业务对应的FSAI。第一频点是为第一终端提供第三广播业务的频点。示例性的，第一频点是为第一终端提供第三广播业务的频点，可以理解为：第一频点是可能为/将要为/能够为第一终端提供第三广播业务的频点。
可选的，在第一频点为第一FSAI对应的频点时，第六信息可以理解为上述第五信息，即第六信息的一种可能的实现为第五信息。此时，上述步骤S1302可以理解为第一终端获取第六信息的实现。即第六信息可以携带在小区的系统信息(如SIB21)中。
可选的，在第一频点为第三广播业务对应的频点时，第六信息可以位于MBS USD中，即第六信息可以为MBS USD中的信息。示例性的，MBS USD可以包括第三广播业务和第一频点的对应关系。进一步的，MBS USD还可以包括第三广播业务对应的FSAI(即第一FSAI)。当然，MBS USD也可以不包括第一FSAI。示例性的，MBS USD可以是第三方应用功能网元向第一终端提供的。该第三方可以理解为第三广播业务的提供方。
或者，在第一频点为第三广播业务对应的频点时，第六信息可以是上述应用功能网元向第一终端发送的预配置信息，即第六信息可以不位于MBS USD中，本申请对此不作具体限定。
可选的，第六信息还包括第二频点，第二频点为第二FSAI对应的频点，或者，第二频点为第三广播业务对应的频点。其中，第二FSAI为第三广播业务对应的FSAI，第二频点是为第二终端提供第三广播业务的频点。
也就是说，第三广播业务可以对应第一FSAI和第二FSAI。第一FSAI和第二FSAI可以相同也可以不同。并且，第一FSAI对应第一频点，第二FSAI对应第二频点。第一频点可能为/将要为/能够为第一终端提供第三广播业务，第二频点可能为/将要为/能够为第二终端提供第三广播业务。
S1402、第一终端将第一频点的小区重选优先级设置为最高优先级。
可选的，第六信息携带在小区的系统信息中时，若第一终端根据MBS USD确定第三广播业务对应的FSAI为第一FSAI，则第一终端可以将第一频点的小区重选优先级设置为最高优先级。即第一终端在小区重选时，可以认为第一频点的优先级最高。
也就是说，第一终端的MBS USD中指示了第一终端正在接收或期望接收或感兴趣的广播业务对应的FSAI，且相同的FSAI包括在网络设备下发的信息(如系统信息)中，那么第一终端可以将该信息中的该FSAI对应的特定频点的优先级设置为最高优先级。其中，该特定频点是为第一终端提供其正在接收或期望接收或感兴趣的广播业务的频点。
可选的，第六信息位于MBS USD中时，若服务小区未提供携带FSAI的系统信息(如SIB21)，第一终端可以将MBS USD中与第三广播业务对应的第一频点的小区重选优先级设置为最高优先级。
或者，若服务小区提供了携带FSAI的系统信息(如SIB21)，但是该系统信息中未提供FSAI和频点的对应关系时，第一终端可以将MBS USD中与第三广播业务对应的第一频点的小区重选优先级设置为最高优先级。
基于该方案，网络设备可以针对广播业务指示为第一终端提供该广播业务的频点。使得第一终端可以将该频点的小区重选优先级设置为最高优先级，从而增加第一终端重选到第一频点上的小区的概率，从而第一终端在当前小区正在接收该广播业务的情况下，能够提升该广播业务的连续性，或者第一终端在当前小区未接收该广播业务，但对该广播业务感兴趣或期望接收该广播业务的情况下，能够提高该广播业务的接收成功率。
可选的，对于上述第二信息、第三信息、第四信息、或第五信息中的任一信息，系统中存在RedCap终 端和eRedCap终端的情况下，网络设备可以针对RedCap终端和eRedCap终端分别发送该信息，针对RedCap终端和eRedCap终端分别发送的该信息的指示可以相同也可以不同。或者，网络设备可以针对RedCap终端和eRedCap终端发送相同的该信息。可参考前述在系统中存在RedCap终端和eRedCap终端的情况下，网络设备向RedCap终端和eRedCap终端发送第一信息的说明，在此不再赘述。
需要说明的是，上述图7、图10、图12、图13、或图14所示的方法可以单独执行，即某个方法的执行不依赖于其他方法。或者，图7、图10、图12、图13、或图14所示方法中的至少两种方法可以相互结合以组成新的实施例，本申请对此不作具体限定。
需要说明的是，本申请上述实施例所述的方法也可以进行适当的变形以适用于组播业务或多播业务。例如，可以将上述实施例中的广播业务替换为组播业务或多播业务，将广播业务关联的配置等替换为相应的组播业务或多播业务关联的配置。或者，还可以进行其他方式的变形以适用于组播业务或多播业务，本申请对此不作具体限定。
需要说明的是，本申请上述实施例中的某个单独的步骤或单独的实现方式或单独的示例，也可以作为完整的实施例。
可以理解的是，以上各个实施例中，由网络设备实现的方法和/或步骤，也可以由可用于该网络设备的部件(例如处理器、芯片、芯片系统、电路、逻辑模块、或软件)实现；由终端实现的方法和/或步骤，也可以由可用于该终端的部件(例如处理器、芯片、芯片系统、电路、逻辑模块、或软件)实现。
上述主要对本申请提供的方案进行了介绍。相应的，本申请还提供了通信装置，该通信装置用于实现上述各种方法。该通信装置可以为上述方法实施例中的网络设备，或者包含上述网络设备的装置，或者为可用于网络设备的部件，例如芯片或芯片系统；或者，该通信装置可以为上述方法实施例中的终端，或者包含上述终端的装置，或者为可用于终端的部件，例如芯片或芯片系统。
可以理解的是，该通信装置为了实现上述功能，其包含了执行各个功能相应的硬件结构和/或软件模块。本领域技术人员应该很容易意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，本申请能够以硬件或硬件和计算机软件的结合形式来实现。某个功能究竟以硬件还是计算机软件驱动硬件的方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
本申请实施例可以根据上述方法实施例对通信装置进行功能模块的划分，例如，可以对应各个功能划分各个功能模块，也可以将两个或两个以上的功能集成在一个处理模块中。上述集成的模块既可以采用硬件的形式实现，也可以采用软件功能模块的形式实现。需要说明的是，本申请实施例中对模块的划分是示意性的，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式。
可选的，以通信装置为上述方法实施例中的网络设备为例，图15示出了一种网络设备150的结构示意图。该网络设备150包括处理模块1501和收发模块1502。
在一些实施例中，该网络设备150还可以包括存储模块(图15中未示出)，用于存储程序指令和数据。
在一些实施例中，收发模块1502，也可以称为收发单元用以实现发送和/或接收功能。该收发模块1502可以由收发电路，收发机，收发器或者通信接口构成。
在一些实施例中，收发模块1502，可以包括接收模块和发送模块，分别用于执行上述方法实施例中由网络设备执行的接收和发送类的步骤，和/或用于支持本文所描述的技术的其它过程；处理模块1501，可以用于执行上述方法实施例中由网络设备执行的处理类(例如确定等)的步骤，和/或用于支持本文所描述的技术的其它过程。
在一些实施例中：
处理模块1501，用于确定第一信息，第一信息指示第一小区是否支持向第一终端提供广播业务，第一终端为能力降低RedCap终端和/或增强型能力降低eRedCap终端；收发模块1502，用于发送第一信息。
可选的，第一信息指示第一小区是否支持向第一终端提供广播业务，包括：第一信息指示第一小区支持向第一终端提供的至少一个广播业务，和/或，第一小区不支持向第一终端提供的至少一个广播业务。
可选的，第一小区支持向第一终端提供第一小区的至少一个广播业务的情况下，第一信息指示第一小区支持向第一终端提供广播业务；或者，第一小区支持向第一终端提供第一小区的所有广播业务的情况下，第一信息指示第一小区支持向第一终端提供广播业务。
可选的，收发模块1502，还用于发送第二信息，第二信息指示第一小区支持向第一终端提供的至少一个广播业务，和/或，第一小区不支持向第一终端提供的至少一个广播业务。
可选的，第一信息指示第一小区支持向第一终端提供第一广播业务的情况下，收发模块1502，还用于 发送第一配置信息，第一配置信息为用于第一终端的第一广播业务的配置信息。
在另一些实施例中：
处理模块1501，用于确定第三信息；第三信息指示是否允许第二终端接收向第一终端提供的多播广播业务控制信道MCCH消息，或者，第三信息指示是否允许第二终端接收向第一终端提供的广播业务；第一终端包括能力降低RedCap终端和/或增强型能力降低eRedCap终端，第二终端的最大工作带宽大于第一终端的最大工作带宽；收发模块1502，用于发送第三信息。
在另一些实施例中：
处理模块1501，用于确定第四信息，第四信息指示第二小区是否向第一终端提供第二广播业务，第一终端为能力降低RedCap终端和/或增强型能力降低eRedCap终端，第二广播业务为第三小区提供的广播业务，第二小区为第三小区的邻区；收发模块1502，用于发送第四信息。
可选的，收发模块1502，还用于发送第七信息，第七信息指示第三小区的至少一个邻区，邻区提供第三小区提供的一个或多个广播业务，至少一个邻区包括第二小区，第三小区提供的一个或多个广播业务包括第二广播业务。
可选的，CU管理的DU包括第一DU和第二DU，第三小区为第一DU管理的小区，第二小区为第二DU管理的小区；收发模块1502，还用于接收第十一信息，第十一信息用于指示第二DU管理的小区中为第一终端提供所述第二广播业务的小区；处理模块1501，用于确定第四信息，包括：处理模块1501，用于根据第十一信息确定第四信息；收发模块1502，用于发送第四信息，包括：收发模块1502，用于向第一DU发送第四信息。
在另一些实施例中：
处理模块1501，用于确定第五信息，第五信息包括第一频率选择区域标识FSAI以及第一FSAI对应的第一频点，第一频点是为第一终端提供第一FSAI对应的广播业务的频点，第一终端包括能力降低RedCap终端和/或增强型能力降低eRedCap终端；收发模块1502，用于发送第五信息。
其中，上述方法实施例涉及的各步骤的所有相关内容均可以援引到对应功能模块的功能描述，在此不再赘述。
在本申请中，该网络设备150以采用集成的方式划分各个功能模块的形式来呈现。这里的“模块”可以指特定专用集成电路(application-specific integrated circuit，ASIC)，电路，执行一个或多个软件或固件程序的处理器和存储器，集成逻辑电路，和/或其他可以提供上述功能的器件。
在一些实施例中，在硬件实现上，本领域的技术人员可以想到该网络设备150可以采用图2所示的通信装置200的形式。
作为一种示例，图15中的处理模块1501的功能/实现过程可以通过图2所示的通信装置200中的处理器201调用存储器203中存储的计算机执行指令来实现。图15中的收发模块1502的功能/实现过程可以通过图2所示的通信装置200中的通信接口204来实现。
在一些实施例中，当图15中的网络设备150是芯片或芯片系统时，收发模块1502的功能/实现过程可以通过芯片或芯片系统的输入输出接口(或通信接口)实现，处理模块1501的功能/实现过程可以通过芯片或芯片系统的处理器(或者处理电路)实现。
由于本实施例提供的网络设备150可执行上述方法，因此其所能获得的技术效果可参考上述方法实施例，在此不再赘述。
可选的，以通信装置为上述方法实施例中的终端为例，图16示出了一种终端160的结构示意图。该终端160包括处理模块1601和收发模块1602。该终端160可以实现上述方式实施例中第一终端或第二终端的功能。
在一些实施例中，该终端160还可以包括存储模块(图16中未示出)，用于存储程序指令和数据。
在一些实施例中，收发模块1602，也可以称为收发单元用以实现发送和/或接收功能。该收发模块1602可以由收发电路，收发机，收发器或者通信接口构成。
在一些实施例中，收发模块1602，可以包括接收模块和发送模块，分别用于执行上述方法实施例中由终端执行的接收和发送类的步骤，和/或用于支持本文所描述的技术的其它过程；处理模块1601，可以用于执行上述方法实施例中由终端执行的处理类(例如确定等)的步骤，和/或用于支持本文所描述的技术的其它过程。
在一些实施例中，终端160用于实现第一终端的功能时：
收发模块1602，用于接收第一信息，第一信息指示第一小区是否支持向第一终端提供广播业务，第一 终端为能力降低RedCap终端和/或增强型能力降低eRedCap终端；处理模块1601，用于根据第一信息确定是否能够通过广播方式接收第一小区提供的广播业务。
可选的，第一信息指示第一小区是否支持向第一终端提供广播业务，包括：第一信息指示第一小区支持向第一终端提供的第一小区的至少一个广播业务，和/或，第一小区不支持向第一终端提供的第一小区的至少一个广播业务。
可选的，第一小区支持向第一终端提供第一小区的至少一个广播业务的情况下，第一信息指示第一小区支持向第一终端提供广播业务；或者，第一小区支持向第一终端提供第一小区的所有广播业务的情况下，第一信息指示第一小区支持向第一终端提供广播业务。
可选的，收发模块1602，还用于接收第二信息，第二信息指示第一小区支持向第一终端提供的第一小区的至少一个广播业务，和/或，第一小区不支持向第一终端提供的第一小区的至少一个广播业务。
可选的，第一信息指示第一小区支持向第一终端提供第一广播业务的情况下，收发模块1602，还用于接收第一配置信息，第一配置信息为用于第一终端的第一广播业务的配置信息；收发模块1602，还用于根据第一配置信息接收第一广播业务。
可选的，第一信息指示第一小区不支持向第一终端提供第一广播业务的情况下，收发模块1602，还用于发起单播接收请求，单播接收请求用于请求采用通过单播方式接收第一广播业务。
在另一些实施例中，终端160用于实现第二终端的功能时：
收发模块1602，用于接收第三信息，第三信息指示是否允许第二终端接收向第一终端提供的多播广播业务控制信道MCCH消息，或者，第三信息指示是否允许第二终端接收向第一终端提供的广播业务；第一终端包括能力降低RedCap终端和/或增强型能力降低eRedCap终端，第二终端的最大工作带宽大于第一终端的最大工作带宽；处理模块1601，用于根据第三信息确定是否接收向第一终端提供的多播广播业务控制信道MCCH消息，或者，根据第三信息确定是否接收向第一终端提供的广播业务。
在一些实施例中，终端160用于实现第一终端的功能时：
收发模块1602，用于接收第四信息，第四信息指示第二小区是否向第一终端提供第二广播业务，第一终端为能力降低RedCap终端和/或增强型能力降低eRedCap终端，第二广播业务为第三小区提供的广播业务，第二小区为第三小区的邻区；处理模块1601，用于根据第四信息确定第二小区是否向第一终端提供第二广播业务。
可选的，若第四信息指示第二小区不向第一终端提供第二广播业务，收发模块1602，还用于发起单播接收请求，单播接收请求用于请求采用通过单播方式接收第二广播业务。
可选的，收发模块1602，还用于接收第七信息，第七信息指示第三小区的至少一个邻区，邻区提供第三小区提供的一个或多个广播业务，至少一个邻区包括第二小区，第三小区提供的一个或多个广播业务包括第二广播业务。
可选的，处理模块1601，用于根据第四信息确定第二小区是否向第一终端提供第二广播业务，包括：处理模块1601，用于根据第四信息和第七信息确定第二小区是否向第一终端提供第二广播业务。
在一些实施例中，终端160用于实现第一终端的功能时：
处理模块1601，用于通过收发模块1602获取第六信息，第六信息包括第一频点，第一频点为第一频率选择区域标识FSAI对应的频点，或者第一频点为第三广播业务对应的频点；处理模块1601，还用于将第一频点的小区重选优先级设置为最高优先级，第三广播业务为第一终端正在接收或感兴趣的广播业务，第一FSAI为第三广播业务对应的FSAI，第一频点是为第一终端提供第三广播业务的频点，第一终端为能力降低RedCap终端和/或增强型能力降低eRedCap终端。
可选的，第六信息还包括第二频点，第二频点为第二FSAI对应的频点，或者第二频点为第三广播业务对应的频点。其中，第二FSAI为第三广播业务对应的FSAI，第二频点是为第二终端提供第三广播业务的频点，第二终端的最大工作带宽大于第一终端的最大工作带宽。
其中，上述方法实施例涉及的各步骤的所有相关内容均可以援引到对应功能模块的功能描述，在此不再赘述。
在本申请中，该终端160以采用集成的方式划分各个功能模块的形式来呈现。这里的“模块”可以指ASIC，电路，执行一个或多个软件或固件程序的处理器和存储器，集成逻辑电路，和/或其他可以提供上述功能的器件。
在一些实施例中，在硬件实现上，本领域的技术人员可以想到该终端160可以采用图2所示的通信装置200的形式。
作为一种示例，图16中的处理模块1601的功能/实现过程可以通过图2所示的通信装置200中的处理器201调用存储器203中存储的计算机执行指令来实现。图16中的收发模块1602的功能/实现过程可以通过图2所示的通信装置200中的通信接口204来实现。
在一些实施例中，当图16中的终端160是芯片或芯片系统时，收发模块1602的功能/实现过程可以通过芯片或芯片系统的输入输出接口(或通信接口)实现，处理模块1601的功能/实现过程可以通过芯片或芯片系统的处理器(或者处理电路)实现。
由于本实施例提供的终端160可执行上述方法，因此其所能获得的技术效果可参考上述方法实施例，在此不再赘述。
作为一种可能的产品形态，本申请实施例所述的网络设备或终端，可以使用下述来实现：一个或多个现场可编程门阵列(field programmable gate array，FPGA)、可编程逻辑器件(programmable logic device，PLD)、控制器、状态机、门逻辑、分立硬件部件、任何其它适合的电路、或者能够执行本申请通篇所描述的各种功能的电路的任意组合。
作为另一种可能的产品形态，本申请实施例所述的终端或网络设备，可以由一般性的总线体系结构来实现。为了便于说明，参见图17，图17是本申请实施例提供的通信装置1700的结构示意图，该通信装置1700包括处理器1701和收发器1702。该通信装置1700可以为终端，或其中的芯片；或者，该通信装置1700可以为网络设备，或其中的芯片或模块。图17仅示出了通信装置1700的主要部件。除处理器1701和收发器1702之外，所述通信装置还可以进一步包括存储器1703、以及输入输出装置(图未示意)。
可选的，处理器1701主要用于对通信协议以及通信数据进行处理，以及对整个通信装置进行控制，执行软件程序，处理软件程序的数据。存储器1703主要用于存储软件程序和数据。收发器1702可以包括射频电路和天线，射频电路主要用于基带信号与射频信号的转换以及对射频信号的处理。天线主要用于收发电磁波形式的射频信号。输入输出装置，例如触摸屏、显示屏，键盘等主要用于接收用户输入的数据以及对用户输出数据。
可选的，处理器1701、收发器1702、以及存储器1703可以通过通信总线连接。
当通信装置开机后，处理器1701可以读取存储器1703中的软件程序，解释并执行软件程序的指令，处理软件程序的数据。当需要通过无线发送数据时，处理器1701对待发送的数据进行基带处理后，输出基带信号至射频电路，射频电路将基带信号进行射频处理后将射频信号通过天线以电磁波的形式向外发送。当有数据发送到通信装置时，射频电路通过天线接收到射频信号，将射频信号转换为基带信号，并将基带信号输出至处理器1701，处理器1701将基带信号转换为数据并对该数据进行处理。
在另一种实现中，所述的射频电路和天线可以独立于进行基带处理的处理器而设置，例如在分布式场景中，射频电路和天线可以与独立于通信装置，呈拉远式的布置。
在一些实施例中，本申请实施例还提供一种通信装置，该通信装置包括处理器，用于实现上述任一方法实施例中的方法。
作为一种可能的实现方式，该通信装置还包括存储器。该存储器，用于保存必要的计算机程序和数据。该计算机程序可以包括指令，处理器可以调用存储器中存储的计算机程序中的指令以指令该通信装置执行上述任一方法实施例中的方法。当然，存储器也可以不在该通信装置中。
作为另一种可能的实现方式，该通信装置还包括接口电路，该接口电路为代码/数据读写接口电路，该接口电路用于接收计算机执行指令(计算机执行指令存储在存储器中，可能直接从存储器读取，或可能经过其他器件)并传输至该处理器。
作为又一种可能的实现方式，该通信装置还包括通信接口，该通信接口用于与该通信装置之外的模块通信。
可以理解的是，该通信装置可以是芯片或芯片系统，该通信装置是芯片系统时，可以由芯片构成，也可以包含芯片和其他分立器件，本申请实施例对此不作具体限定。
本申请还提供了一种计算机可读存储介质，其上存储有计算机程序或指令，该计算机程序或指令被计算机执行时实现上述任一方法实施例的功能。
本申请还提供了一种计算机程序产品，该计算机程序产品被计算机执行时实现上述任一方法实施例的功能。
本领域普通技术人员可以理解，为描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
可以理解，本申请中描述的系统、装置和方法也可以通过其它的方式实现。例如，以上所描述的装置 实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，即可以位于一个地方，或者也可以分布到多个网络单元上。作为单元显示的部件可以是或者也可以不是物理单元。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。
在上述实施例中，可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件程序实现时，可以全部或部分地以计算机程序产品的形式来实现。该计算机程序产品包括一个或多个计算机指令。在计算机上加载和执行计算机程序指令时，本申请实施例所述的全部或部分流程(或功能)被实现。所述计算机可以是通用计算机、专用计算机、计算机网络、或者其他可编程装置。所述计算机指令可以存储在计算机可读存储介质中，或者从一个计算机可读存储介质向另一个计算机可读存储介质传输，例如，所述计算机指令可以从一个网站站点、计算机、服务器或者数据中心通过有线(例如同轴电缆、光纤、数字用户线(digital subscriber line，DSL))或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。所述计算机可读存储介质可以是计算机能够存取的任何可用介质或者是包含一个或多个可以用介质集成的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质(例如，软盘、硬盘、磁带)，光介质(例如，DVD)、或者半导体介质(例如固态硬盘(solid state drive，SSD))等。本申请实施例中,计算机可以包括前面所述的装置。
尽管在此结合各实施例对本申请进行了描述，然而，在实施所要求保护的本申请过程中，本领域技术人员通过查看所述附图、公开内容、以及所附权利要求书，可理解并实现所述公开实施例的其他变化。在权利要求中，“包括”(comprising)一词不排除其他组成部分或步骤，“一”或“一个”不排除多个的情况。单个处理器或其他单元可以实现权利要求中列举的若干项功能。相互不同的从属权利要求中记载了某些措施，但这并不表示这些措施不能组合起来产生良好的效果。
尽管结合具体特征及其实施例对本申请进行了描述，显而易见的，在不脱离本申请的精神和范围的情况下，可对其进行各种修改和组合。相应地，本说明书和附图仅仅是所附权利要求所界定的本申请的示例性说明，且视为已覆盖本申请范围内的任意和所有修改、变化、组合或等同物。显然，本领域的技术人员可以对本申请进行各种改动和变型而不脱离本申请的精神和范围。这样，倘若本申请的这些修改和变型属于本申请权利要求及其等同技术的范围之内，则本申请也意图包含这些改动和变型在内。

Claims (71)

  1. 一种通信方法，其特征在于，所述方法包括：
    确定第一信息，所述第一信息指示第一小区是否支持向第一终端提供广播业务，所述第一终端为能力降低RedCap终端和/或增强型能力降低eRedCap终端；
    发送所述第一信息。
  2. 根据权利要求1所述的方法，其特征在于，所述第一信息指示第一小区是否支持向第一终端提供广播业务，包括：
    所述第一信息指示所述第一小区支持向所述第一终端提供的至少一个广播业务，和/或，所述第一小区不支持向所述第一终端提供的至少一个广播业务。
  3. 根据权利要求1或2所述的方法，其特征在于，所述第一信息携带在多播广播业务控制信道MCCH消息中。
  4. 根据权利要求1所述的方法，其特征在于，
    所述第一小区支持向所述第一终端提供所述第一小区的至少一个广播业务的情况下，所述第一信息指示所述第一小区支持向所述第一终端提供广播业务；或者，
    所述第一小区支持向所述第一终端提供所述第一小区的所有广播业务的情况下，所述第一信息指示所述第一小区支持向所述第一终端提供广播业务。
  5. 根据权利要求4所述的方法，其特征在于，所述方法还包括：
    发送第二信息，所述第二信息指示所述第一小区支持向所述第一终端提供的至少一个广播业务，和/或，所述第一小区不支持向所述第一终端提供的至少一个广播业务。
  6. 根据权利要求5所述的方法，其特征在于，所述第二信息携带在MCCH消息中。
  7. 根据权利要求1、4-6任一项所述的方法，其特征在于，所述第一信息携带在所述第一小区的系统信息中。
  8. 根据权利要求1-7任一项所述的方法，其特征在于，所述第一信息指示所述第一小区支持向所述第一终端提供第一广播业务；所述方法还包括：
    发送第一配置信息，所述第一配置信息为用于所述第一终端的所述第一广播业务的配置信息。
  9. 一种通信方法，其特征在于，所述方法包括：
    接收第一信息，所述第一信息指示第一小区是否支持向第一终端提供广播业务，所述第一终端为能力降低RedCap终端和/或增强型能力降低eRedCap终端；
    根据所述第一信息确定是否能够通过广播方式接收所述第一小区提供的广播业务。
  10. 根据权利要求9所述的方法，其特征在于，所述第一信息指示第一小区是否支持向第一终端提供广播业务，包括：
    所述第一信息指示所述第一小区支持向所述第一终端提供的至少一个广播业务，和/或，所述第一小区不支持向所述第一终端提供的至少一个广播业务。
  11. 根据权利要求9所述的方法，其特征在于，
    所述第一小区支持向所述第一终端提供所述第一小区的至少一个广播业务的情况下，所述第一信息指示所述第一小区支持向所述至少一个第一终端提供广播业务；或者，
    所述第一小区支持向所述第一终端提供所述第一小区的所有广播业务的情况下，所述第一信息指示所述第一小区支持向所述第一终端提供广播业务。
  12. 根据权利要求11所述的方法，其特征在于，所述方法还包括：
    接收第二信息，所述第二信息指示所述第一小区支持向所述第一终端提供的至少一个广播业务，和/或，所述第一小区不支持向所述第一终端提供的至少一个广播业务。
  13. 根据权利要求9-12任一项所述的方法，其特征在于，所述第一信息指示所述第一小区支持向所述第一终端提供第一广播业务；所述方法还包括：
    接收第一配置信息，所述第一配置信息为用于所述第一终端的所述第一广播业务的配置信息；
    根据所述第一配置信息接收所述第一广播业务。
  14. 根据权利要求9-12任一项所述的方法，其特征在于，所述第一信息指示所述第一小区不支持向所述第一终端提供第一广播业务；所述方法还包括：
    发起单播接收请求，所述单播接收请求用于请求通过单播方式接收所述第一广播业务。
  15. 一种通信方法，其特征在于，所述方法包括：
    确定第三信息；所述第三信息指示是否允许第二终端接收向第一终端提供的多播广播业务控制信道MCCH消息，或者，所述第三信息指示是否允许第二终端接收向第一终端提供的广播业务；所述第一终端包括能力降低RedCap终端和/或增强型能力降低eRedCap终端，所述第二终端的最大工作带宽大于所述第一终端的最大工作带宽；
    发送所述第三信息。
  16. 一种通信方法，其特征在于，所述方法包括：
    接收第三信息，所述第三信息指示是否允许第二终端接收向第一终端提供的多播广播业务控制信道MCCH消息，或者，所述第三信息指示是否允许第二终端接收向第一终端提供的广播业务；所述第一终端包括能力降低RedCap终端和/或增强型能力降低eRedCap终端，所述第二终端的最大工作带宽大于所述第一终端的最大工作带宽；
    根据所述第三信息确定是否接收向所述第一终端提供的多播广播业务控制信道MCCH消息，或者，根据所述第三信息确定是否接收向所述第一终端提供的广播业务。
  17. 根据权利要求15或16所述的方法，其特征在于，所述第二信息携带在以下任意一项中：系统信息、下行控制信息DCI、或MCCH消息。
  18. 一种通信方法，其特征在于，所述方法包括：
    确定第四信息，所述第四信息指示第二小区是否向第一终端提供第二广播业务，所述第一终端为能力降低RedCap终端和/或增强型能力降低eRedCap终端，所述第二广播业务为第三小区提供的广播业务，所述第二小区为所述第三小区的邻区；
    发送所述第四信息。
  19. 根据权利要求18所述的方法，其特征在于，所述方法还包括：
    发送第七信息，所述第七信息指示所述第三小区的至少一个邻区，所述邻区提供所述第三小区提供的一个或多个广播业务，所述至少一个邻区包括所述第二小区，所述第三小区提供的一个或多个广播业务包括所述第二广播业务。
  20. 根据权利要求19所述的方法，其特征在于，所述邻区向所述第一终端提供所述第三小区提供的一个或多个广播业务，或者，所述邻区向所述第一终端和第二终端提供所述第三小区提供的一个或多个广播业务，所述第二终端的最大工作带宽大于所述第一终端的最大工作带宽。
  21. 根据权利要求18-20任一项所述的方法，其特征在于，所述方法应用于集中式单元CU；发送所述第四信息，包括：
    向分布式单元DU发送所述第四信息。
  22. 根据权利要求18-20任一项所述的方法，其特征在于，所述方法应用于CU，所述CU管理第一DU和第二DU，所述第三小区为所述第一DU管理的小区，所述第二小区为所述第二DU管理的小区；
    所述确定第四信息，包括：
    接收来自所述第二DU的第十一信息，所述第十一信息用于指示所述第二DU管理的小区中为所述第一终端提供所述第二广播业务的小区；
    根据所述第十一信息确定所述第四信息；
    所述发送所述第四信息，包括：
    向所述第一DU发送所述第四信息。
  23. 一种通信方法，其特征在于，所述方法包括：
    接收第四信息，所述第四信息指示第二小区是否向第一终端提供第二广播业务，所述第一终端为能力降低RedCap终端和/或增强型能力降低eRedCap终端，所述第二广播业务为第三小区提供的广播业务，所述第二小区为所述第三小区的邻区；
    根据所述第四信息确定所述第二小区是否向所述第一终端提供所述第二广播业务。
  24. 根据权利要求23所述的方法，其特征在于，所述方法还包括：
    若所述第四信息指示所述第二小区不向所述第一终端提供所述第二广播业务，发起单播接收请求，所述单播接收请求用于请求通过单播方式接收所述第二广播业务。
  25. 根据权利要求23或24所述的方法，其特征在于，所述方法还包括：
    接收第七信息，所述第七信息指示所述第三小区的至少一个邻区，所述邻区提供所述第三小区提供的一个或多个广播业务，所述至少一个邻区包括所述第二小区，所述第三小区提供的一个或多个广播业务包括所述第二广播业务。
  26. 根据权利要求25所述的方法，其特征在于，所述邻区向所述第一终端提供所述第三小区提供的一个或多个广播业务，或者，所述邻区向所述第一终端和第二终端提供所述第三小区提供的一个或多个广播业务，所述第二终端的最大工作带宽大于所述第一终端的最大工作带宽。
  27. 根据权利要求25或26所述的方法，其特征在于，根据所述第四信息确定所述第二小区是否向所述第一终端提供所述第二广播业务，包括：
    根据所述第四信息和所述第七信息确定所述第二小区是否向所述第一终端提供所述第二广播业务。
  28. 根据权利要求18-27任一项所述的方法，其特征在于，所述第四信息携带在多播广播业务控制信道MCCH消息中。
  29. 一种通信方法，其特征在于，所述方法包括：
    确定第五信息，所述第五信息包括第一频率选择区域标识FSAI以及所述第一FSAI对应的第一频点，所述第一频点是为第一终端提供所述第一FSAI对应的广播业务的频点，所述第一终端包括能力降低RedCap终端和/或增强型能力降低eRedCap终端；
    发送所述第五信息。
  30. 根据权利要求29所述的方法，其特征在于，所述第五信息还包括所述第一FSAI对应的第二频点，所述第二频点是为第二终端提供所述第一FSAI对应的广播业务的频点，所述第二终端的最大工作带宽大于所述第一终端的最大工作带宽。
  31. 根据权利要求29或30所述的方法，其特征在于，所述第五信息携带在小区的系统信息中。
  32. 一种通信方法，其特征在于，所述方法包括：
    获取第六信息，所述第六信息包括第一频点，所述第一频点为第一频率选择区域标识FSAI对应的频点，或者所述第一频点为第三广播业务对应的频点；
    将所述第一频点的小区重选优先级设置为最高优先级，所述第三广播业务为第一终端正在接收或感兴趣的广播业务，所述第一FSAI为所述第三广播业务对应的FSAI，所述第一频点是为第一终端提供所述第三广播业务的频点，所述第一终端为能力降低RedCap终端和/或增强型能力降低eRedCap终端。
  33. 根据权利要求32所述的方法，其特征在于，所述第六信息携带在小区的系统信息中；或者，所述第六信息位于多播广播业务MBS的用户业务描述USD中。
  34. 根据权利要求32或33所述的方法，其特征在于，所述第六信息还包括第二频点，所述第二频点为第二FSAI对应的频点，或者所述第二频点为所述第三广播业务对应的频点；
    其中，所述第二FSAI为所述第三广播业务对应的FSAI，所述第二频点是为第二终端提供所述第三广播业务的频点，所述第二终端的最大工作带宽大于所述第一终端的最大工作带宽。
  35. 一种通信装置，其特征在于，所述装置包括：处理模块和收发模块；
    所述处理模块，用于确定第一信息，所述第一信息指示第一小区是否支持向第一终端提供广播业务，所述第一终端为能力降低RedCap终端和/或增强型能力降低eRedCap终端；
    所述收发模块，用于发送所述第一信息。
  36. 根据权利要求35所述的装置，其特征在于，所述第一信息指示第一小区是否支持向第一终端提供广播业务，包括：
    所述第一信息指示所述第一小区支持向所述第一终端提供的至少一个广播业务，和/或，所述第一小区不支持向所述第一终端提供的至少一个广播业务。
  37. 根据权利要求35或36所述的装置，其特征在于，所述第一信息携带在多播广播业务控制信道MCCH消息中。
  38. 根据权利要求35所述的装置，其特征在于，
    所述第一小区支持向所述第一终端提供所述第一小区的至少一个广播业务的情况下，所述第一信息指示所述第一小区支持向所述第一终端提供广播业务；或者，
    所述第一小区支持向所述第一终端提供所述第一小区的所有广播业务的情况下，所述第一信息指示所述第一小区支持向所述第一终端提供广播业务。
  39. 根据权利要求38所述的装置，其特征在于，
    所述收发模块，还用于发送第二信息，所述第二信息指示所述第一小区支持向所述第一终端提供的至少一个广播业务，和/或，所述第一小区不支持向所述第一终端提供的至少一个广播业务。
  40. 根据权利要求39所述的装置，其特征在于，所述第二信息携带在MCCH消息中。
  41. 根据权利要求35、38-40任一项所述的装置，其特征在于，所述第一信息携带在所述第一小区的 系统信息中。
  42. 根据权利要求35-41任一项所述的装置，其特征在于，所述第一信息指示所述第一小区支持向所述第一终端提供第一广播业务；
    所述收发模块，还用于发送第一配置信息，所述第一配置信息为用于所述第一终端的所述第一广播业务的配置信息。
  43. 一种通信装置，其特征在于，所述装置包括：处理模块和收发模块；
    所述收发模块，用于接收第一信息，所述第一信息指示第一小区是否支持向第一终端提供广播业务，所述第一终端为能力降低RedCap终端和/或增强型能力降低eRedCap终端；
    所述处理模块，用于根据所述第一信息确定是否能够通过广播方式接收所述第一小区提供的广播业务。
  44. 根据权利要求43所述的装置，其特征在于，所述第一信息指示第一小区是否支持向第一终端提供广播业务，包括：
    所述第一信息指示所述第一小区支持向所述第一终端提供的至少一个广播业务，和/或，所述第一小区不支持向所述第一终端提供的至少一个广播业务。
  45. 根据权利要求43所述的装置，其特征在于，
    所述第一小区支持向所述第一终端提供所述第一小区的至少一个广播业务的情况下，所述第一信息指示所述第一小区支持向所述第一终端提供广播业务；或者，
    所述第一小区支持向所述第一终端提供所述第一小区的所有广播业务的情况下，所述第一信息指示所述第一小区支持向所述第一终端提供广播业务。
  46. 根据权利要求45所述的装置，其特征在于，
    所述收发模块，还用于接收第二信息，所述第二信息指示所述第一小区支持向所述第一终端提供的至少一个广播业务，和/或，所述第一小区不支持向所述第一终端提供的至少一个广播业务。
  47. 根据权利要求43-46任一项所述的装置，其特征在于，所述第一信息指示所述第一小区支持向所述第一终端提供第一广播业务；
    所述收发模块，还用于接收第一配置信息，所述第一配置信息为用于所述第一终端的所述第一广播业务的配置信息；
    所述收发模块，还用于根据所述第一配置信息接收所述第一广播业务。
  48. 根据权利要求43-46任一项所述的装置，其特征在于，所述第一信息指示所述第一小区不支持向所述第一终端提供第一广播业务；
    所述收发模块，还用于发起单播接收请求，所述单播接收请求用于请求通过单播方式接收所述第一广播业务。
  49. 一种通信装置，其特征在于，所述装置包括：处理模块和收发模块；
    所述处理模块，用于确定第三信息；所述第三信息指示是否允许第二终端接收向第一终端提供的多播广播业务控制信道MCCH消息，或者，所述第三信息指示是否允许第二终端接收向第一终端提供的广播业务；所述第一终端包括能力降低RedCap终端和/或增强型能力降低eRedCap终端，所述第二终端的最大工作带宽大于所述第一终端的最大工作带宽；
    所述收发模块，用于发送所述第三信息。
  50. 一种通信装置，其特征在于，所述装置包括：处理模块和收发模块；
    所述收发模块，用于接收第三信息，所述第三信息指示是否允许第二终端接收向第一终端提供的多播广播业务控制信道MCCH消息，或者，所述第三信息指示是否允许第二终端接收向第一终端提供的广播业务；所述第一终端包括能力降低RedCap终端和/或增强型能力降低eRedCap终端，所述第二终端的最大工作带宽大于所述第一终端的最大工作带宽；
    所述处理模块，用于根据所述第三信息确定是否接收向所述第一终端提供的多播广播业务控制信道MCCH消息，或者，根据所述第三信息确定是否接收向所述第一终端提供的广播业务。
  51. 根据权利要求49或50所述的装置，其特征在于，所述第二信息携带在以下任意一项中：系统信息、下行控制信息DCI、或MCCH消息。
  52. 一种通信装置，其特征在于，所述装置包括：处理模块和收发模块；
    所述处理模块，用于确定第四信息，所述第四信息指示第二小区是否向第一终端提供第二广播业务，所述第一终端为能力降低RedCap终端和/或增强型能力降低eRedCap终端，所述第二广播业务为第三小区提供的广播业务，所述第二小区为所述第三小区的邻区；
    所述收发模块，用于发送所述第四信息。
  53. 根据权利要求52所述的装置，其特征在于，所述收发模块，还用于发送第七信息，所述第七信息指示所述第三小区的至少一个邻区，所述邻区提供所述第三小区提供的一个或多个广播业务，所述至少一个邻区包括所述第二小区，所述第三小区提供的一个或多个广播业务包括所述第二广播业务。
  54. 根据权利要求53所述的装置，其特征在于，所述邻区向所述第一终端提供所述第三小区提供的一个或多个广播业务，或者，所述邻区向所述第一终端和第二终端提供所述第三小区提供的一个或多个广播业务，所述第二终端的最大工作带宽大于所述第一终端的最大工作带宽。
  55. 根据权利要求52-54任一项所述的装置，其特征在于，所述通信装置为集中式单元CU；
    所述收发模块，用于发送所述第四信息，包括：所述收发模块，用于向分布式单元DU发送所述第四信息。
  56. 一种通信装置，其特征在于，所述装置包括：处理模块和收发模块；
    所述收发模块，用于接收第四信息，所述第四信息指示第二小区是否向第一终端提供第二广播业务，所述第一终端为能力降低RedCap终端和/或增强型能力降低eRedCap终端，所述第二广播业务为第三小区提供的广播业务，所述第二小区为所述第三小区的邻区；
    所述处理模块，用于根据所述第四信息确定所述第二小区是否向所述第一终端提供所述第二广播业务。
  57. 根据权利要求56所述的装置，其特征在于，若所述第四信息指示所述第二小区不向所述第一终端提供所述第二广播业务，所述收发模块，还用于发起单播接收请求，所述单播接收请求用于请求通过单播方式接收所述第二广播业务。
  58. 根据权利要求56或57所述的装置，其特征在于，
    所述收发模块，还用于接收第七信息，所述第七信息指示所述第三小区的至少一个邻区，所述邻区提供所述第三小区提供的一个或多个广播业务，所述至少一个邻区包括所述第二小区，所述第三小区提供的一个或多个广播业务包括所述第二广播业务。
  59. 根据权利要求58所述的装置，其特征在于，所述邻区向所述第一终端提供所述第三小区提供的一个或多个广播业务，或者，所述邻区向所述第一终端和第二终端提供所述第三小区提供的一个或多个广播业务，所述第二终端的最大工作带宽大于所述第一终端的最大工作带宽。
  60. 根据权利要求58或59所述的装置，其特征在于，所述处理模块，用于根据所述第四信息确定所述第二小区是否向所述第一终端提供所述第二广播业务，包括：
    所述处理模块，用于根据所述第四信息和所述第七信息确定所述第二小区是否向所述第一终端提供所述第二广播业务。
  61. 根据权利要求52-60任一项所述的装置，其特征在于，所述第四信息携带在多播广播业务控制信道MCCH消息中。
  62. 一种通信装置，其特征在于，所述装置包括：处理模块和收发模块；
    所述处理模块，用于确定第五信息，所述第五信息包括第一频率选择区域标识FSAI以及所述第一FSAI对应的第一频点，所述第一频点是为第一终端提供所述第一FSAI对应的广播业务的频点，所述第一终端包括能力降低RedCap终端和/或增强型能力降低eRedCap终端；
    所述收发模块，用于发送所述第五信息。
  63. 根据权利要求62所述的装置，其特征在于，所述第五信息还包括所述第一FSAI对应的第二频点，所述第二频点是为第二终端提供所述第一FSAI对应的广播业务的频点，所述第二终端的最大工作带宽大于所述第一终端的最大工作带宽。
  64. 根据权利要求62或63所述的装置，其特征在于，所述第五信息携带在小区的系统信息中。
  65. 一种通信装置，其特征在于，所述装置包括：处理模块和收发模块；
    所述处理模块，用于通过所述收发模块获取第六信息，所述第六信息包括第一频点，所述第一频点为第一频率选择区域标识FSAI对应的频点，或者所述第一频点为第三广播业务对应的频点；
    所述处理模块，还用于将所述第一频点的小区重选优先级设置为最高优先级，所述第三广播业务为第一终端正在接收或感兴趣的广播业务，所述第一FSAI为所述第三广播业务对应的FSAI，所述第一频点是为第一终端提供所述第三广播业务的频点，所述第一终端为能力降低RedCap终端和/或增强型能力降低eRedCap终端。
  66. 根据权利要求65所述的装置，其特征在于，所述第六信息携带在小区的系统信息中；或者，所述第六信息位于多播广播业务MBS的用户业务描述USD中。
  67. 根据权利要求65或66所述的装置，其特征在于，所述第六信息还包括第二频点，所述第二频点为第二FSAI对应的频点，或者所述第二频点为所述第三广播业务对应的频点；
    其中，所述第二FSAI为所述第三广播业务对应的FSAI，所述第二频点是为第二终端提供所述第三广播业务的频点，所述第二终端的最大工作带宽大于所述第一终端的最大工作带宽。
  68. 一种通信装置，其特征在于，所述通信装置包括处理器；所述处理器，用于运行计算机程序或指令，以使所述通信装置执行如权利要求1-34任一项所述的方法。
  69. 一种计算机可读存储介质，其特征在于，计算机可读存储介质存储有计算机指令或程序，当计算机指令或程序在计算机上运行时，使得如权利要求1-34任一项所述的方法被执行。
  70. 一种计算机程序产品，其特征在于，所述计算机程序产品包括计算机指令；当部分或全部所述计算机指令在计算机上运行时，使得如权利要求1-34任一项所述的方法被执行。
  71. 一种芯片系统，其特征在于，包括：
    存储器，用于存储计算机程序指令；
    处理器，用于执行所述计算机程序指令，使得包括所述芯片的通信装置执行如权利要求1-34中任一项所述的方法。
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