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WO2020259611A1 - Procédé et appareil de communication et support de stockage - Google Patents

Procédé et appareil de communication et support de stockage Download PDF

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Publication number
WO2020259611A1
WO2020259611A1 PCT/CN2020/098189 CN2020098189W WO2020259611A1 WO 2020259611 A1 WO2020259611 A1 WO 2020259611A1 CN 2020098189 W CN2020098189 W CN 2020098189W WO 2020259611 A1 WO2020259611 A1 WO 2020259611A1
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WO
WIPO (PCT)
Prior art keywords
feedback
group
network device
information
parameter
Prior art date
Application number
PCT/CN2020/098189
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English (en)
Chinese (zh)
Inventor
胡丹
官磊
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华为技术有限公司
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Filing date
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Publication of WO2020259611A1 publication Critical patent/WO2020259611A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/1607—Details of the supervisory signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H04L5/0055—Physical resource allocation for ACK/NACK
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/30—Services specially adapted for particular environments, situations or purposes
    • H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/70—Services for machine-to-machine communication [M2M] or machine type communication [MTC]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling

Definitions

  • This application relates to the field of communication technology, and in particular to a communication method, device and storage medium.
  • the International Telecommunication Union defines a variety of application scenarios for the fifth generation (5G) and future mobile communication systems, such as: enhanced mobile broadband (eMBB) , High-reliable and low-latency communications (ultra reliable and low latency communications, URLLC) and massive machine type communications (mMTC).
  • enhanced mobile broadband eMBB
  • URLLC ultra reliable and low latency communications
  • massive machine type communications mMTC
  • a hybrid automatic repeat request (HARQ) feedback mechanism is usually used to ensure the reliability of data transmission between network equipment and terminal equipment. Since the HARQ feedback mechanism can request the network device to retransmit when the data transmission fails, the reliability of the data transmission can be guaranteed. Moreover, in the HARQ feedback mechanism, the sender will retransmit the data only when it receives the NACK feedback from the receiver, thereby reducing the overall resource consumption of data transmission. However, when a large number of terminal devices in the communication system simultaneously send feedback information to the network device, the communication system overhead will be very large.
  • 3 rd generation partnership project 3 rd generation partnership project, 3GPP
  • 3GPP 3 rd generation partnership project
  • MBMS multimedia broadcast multicast service
  • the present application provides a communication method, device and storage medium, which are used to reduce the feedback overhead of the communication system.
  • the present application provides a communication method.
  • the method includes receiving group information from a network device, and receiving first data from the network device, determining a first group to which the first data belongs, and determining the first group corresponding to the first group according to the
  • the indication information determines whether it is necessary to send feedback information to the network device, where the first group is one of one or more groups, the group information indicates the first identifier included in the one or more groups, and the group information also includes an indication corresponding to each group information.
  • the first identifier may identify one service or a group of services.
  • the method may be executed by a communication device, which may be a communication device or a communication device capable of supporting the communication device to implement the functions required by the method, such as a chip system.
  • a communication device is a terminal device.
  • the indication information in this application includes but is not limited to any of the following six situations.
  • the indication information includes the first type of parameter, where the first type of parameter is used to indicate feedback or no feedback.
  • the indication information includes a second type of parameter, where the second type of parameter is used to indicate the threshold of the feedback decision parameter.
  • the feedback information is sent to the network device; or, when it is determined that the value of the feedback decision parameter corresponding to the first data does not meet the threshold of the feedback decision parameter, Do not send feedback information to network devices. It should be understood that satisfaction includes, but is not limited to, greater than, less than, greater than or equal to, less than or equal to, within a certain range, etc.
  • the feedback decision parameter includes any one or a combination of any of the following: distance, reference signal receiving power (RSRP), signal to interference plus noise ratio, SINR). That is, the feedback decision parameter can be distance, or RSRP, or SINR, or distance and RSRP, or distance and SINR, or RSRP and SINR, or distance, RSRP and SINR. It should be noted that distance can refer to geographic distance.
  • RSRP reference signal receiving power
  • SINR signal to interference plus noise ratio
  • the feedback decision parameter is distance
  • the threshold of the feedback decision distance which may be the default; or It can be notified by the network device (for example, it can be notified in advance, or sent along with the instruction information); or it can be pre-arranged with the network device, or it can be predefined by the protocol.
  • the feedback can be the default; or it can be notified by the network device; or it can be pre-arranged with the network device , Or it can be predefined by the protocol.
  • the current RSRP value (that is, the value of the feedback decision parameter corresponding to the first data) is less than the RSRP threshold. No feedback, or greater than the RSRP threshold. Feedback can be the default, or it can be notified in advance by the network device, or it can be an agreement. pre-defined.
  • the feedback decision parameter is SINR
  • determine that the current SINR value (that is, the value of the feedback decision parameter corresponding to the first data) is less than the SINR threshold.
  • No feedback, and the threshold feedback greater than the SINR can be the default or the network device may notify in advance , Or it can be predefined by the protocol.
  • the indication information includes the first type of parameter and the second type of parameter, where the first type of parameter and the second type of parameter can be referred to the introduction of the above case 1 and case 2.
  • the indication information corresponding to the first group may include the first type parameter and the second type parameter, and it is determined that the first type parameter corresponding to the first group to which the first data belongs represents feedback and the first data When the value of the corresponding feedback decision parameter meets the threshold of the feedback decision parameter, the feedback information is sent to the network device.
  • the first identifier may be a temporary mobile group identity (TMGI), a group-radio network temporary identifier (G-RNTI), and a multicast control channel (Temporary Mobile Group Identity, TMGI) Multicast control channel, MCCH), or single cell multicast control channel (SC-MCCH).
  • TMGI temporary mobile group identity
  • G-RNTI group-radio network temporary identifier
  • MCCH multicast control channel
  • SC-MCCH single cell multicast control channel
  • the first identifier when the communication device performing the above method is in the radio resource control (radio resource control, RRC) connected state, the first identifier may be G-RNTI; when the communication device performing the above method is in the idle (IDLE) state, the first identifier may be G-RNTI;
  • An identifier can be TMGI, SC-MCCH or MCCH. Specifically, optionally, whether the first identifier is SC-MCCH or MCCH may be determined by the transmission mode of MBMS.
  • the first identifier It is MCCH
  • SC-PTM single cell point-to-multipoint
  • the feedback information is sent to the network device, where the feedback condition is: the first data is not correctly parsed.
  • the feedback information may be HARQ feedback information, or CSI, or HARQ feedback information and CSI.
  • the specific feedback information may be notified by the network device, or agreed in advance by the network device, or it may be default, or it may be predefined through a protocol.
  • the present application provides a communication method.
  • the method includes configuring indication information for each group and sending group information to a terminal device.
  • the group information indicates a first identifier included in one or more groups, and the group information further includes the corresponding Instructions. It should be understood that one or more first identifiers may be included in a group.
  • the method may be executed by a communication device, which may be a communication device or a communication device capable of supporting the communication device to implement the functions required by the method, such as a chip system.
  • a communication device is a network device.
  • some groups need to send feedback information, that is, the feedback mechanism is turned on; some services do not need to send feedback information, that is, the feedback is not opened (or closed). mechanism.
  • the terminal device After the terminal device receives the first data belonging to the packet for which the feedback mechanism is not enabled, no matter whether the first data is correctly parsed, it does not need to send any feedback information. In this way, it helps to reduce the feedback overhead of the communication system (control information except useful data is called overhead). For example, when a service with high service transmission reliability requirements is divided into a group, and a feedback mechanism is enabled for the group configuration, if possible, the high reliability requirements for the transmission of service data in the group can be guaranteed.
  • Each grouping can be obtained by grouping multiple services by the network device, or directly storing the grouped groups in the network device.
  • multiple services may be grouped according to their service characteristics and/or service types.
  • multiple services can be grouped according to service characteristics, multiple services can be grouped according to service types, or multiple services can also be grouped according to service types and service characteristics.
  • service characteristics include any one or a combination of service reliability requirements, service coverage capabilities, service delay requirements, service data volume, service mobility requirements, and service priorities; service types include enhanced mobile broadband eMBB, high-reliability and low-latency communication URLLC, massive machine-type communication mMTC, vehicle to everything (V2X), Internet of things (IoT).
  • the first identifier is TMGI, G-RNTI, MCCH, or SC-MCCH. It should be understood that when the terminal device is in the radio resource control (RRC) connection state, the first identifier may be G-RNTI; when the terminal device is in the IDLE state, the first identifier may be TMGI, SC-MCCH Or MCCH. Specifically, optionally, whether the first identifier is SC-MCCH or MCCH may be determined by the transmission mode of MBMS.
  • RRC radio resource control
  • the first identifier It is MCCH
  • SC-PTM single cell point-to-multipoint
  • the indication information may include the first type of parameters, or the indication information may include the second type of parameters, or the indication information may include the first type of parameters and the second type of parameters.
  • the first type of parameter is used to indicate feedback or no feedback
  • the second type of parameter is used to indicate the threshold of the feedback decision parameter
  • the threshold of the feedback decision parameter is used to determine that the value of the feedback decision parameter corresponding to the first data satisfies the feedback decision
  • the feedback information is sent; or, when it is determined that the value of the feedback decision parameter corresponding to the first data does not meet the threshold of the feedback decision parameter, the feedback information is not sent.
  • the indication information may also include a preset condition, and the preset condition may be feedback when the threshold is greater than the SINR, or feedback when the threshold is greater than the RSRP, or feedback when it falls within a certain distance range (ie, the distance threshold), and so on.
  • the preset condition may be feedback when the threshold is greater than the SINR, or feedback when the threshold is greater than the RSRP, or feedback when it falls within a certain distance range (ie, the distance threshold), and so on.
  • the feedback decision parameter includes any one or a combination of any one of distance, RSRP, and SINR.
  • the feedback information may be HARQ feedback information, or CSI, or HARQ feedback information and CSI.
  • the specific feedback information may be specified and notified to the terminal device, or pre-arranged with the terminal device, or it may be the default of the terminal device, or it may be predefined through a protocol.
  • the grouping information can be sent to the terminal device through high-level signaling; or, the grouping information can also be sent to the terminal device through a system message.
  • the present application provides a communication device that has the function of implementing the network device or terminal device in the above-mentioned embodiment.
  • This function can be realized by hardware, or by hardware executing corresponding software.
  • the hardware or software includes one or more units or units corresponding to the above-mentioned functions.
  • the communication device includes: a processor configured to support the communication device to perform corresponding functions of the network device in the communication method shown above.
  • the communication device may also include a memory, and the storage may be coupled with the processor, which stores program instructions and data necessary for the communication device.
  • the communication device further includes a transceiver, and the transceiver is used to support communication between the communication device and the terminal device.
  • the transceiver can be an independent receiver, an independent transmitter, a transceiver with integrated transceiver functions, or an interface circuit.
  • the communication device may be a network device, or a component that can be used in a network device, such as a chip or a chip system or a circuit.
  • the communication device includes: a processor configured to support the communication device to perform corresponding functions of the terminal device in the communication method shown above.
  • the communication device may also include a memory, and the storage may be coupled with the processor, which stores program instructions and data necessary for the communication device.
  • the communication device further includes a transceiver, and the transceiver is used to support communication between the communication device and network equipment and the like.
  • the transceiver can be an independent receiver, an independent transmitter, a transceiver with integrated transceiver functions, or an interface circuit.
  • the communication device may be a terminal device, or a component that can be used in a terminal device, such as a chip or a chip system or a circuit.
  • the present application provides a communication device, which is used to implement any one of the foregoing first aspect or the first aspect, or is used to implement any one of the foregoing second or second aspects, including
  • the corresponding functional units are respectively used to implement the steps in the above method.
  • the function can be realized by hardware, or by hardware executing corresponding software.
  • the hardware or software includes one or more units corresponding to the above-mentioned functions.
  • the structure of the communication device includes a processing unit and a transceiving unit, and these units can perform corresponding functions in the foregoing method examples.
  • a processing unit and a transceiving unit can perform corresponding functions in the foregoing method examples.
  • an embodiment of the present application provides a communication system, which includes a terminal device and a network device.
  • the terminal device may be used to execute any method in the first aspect or the first aspect
  • the network device may be used to execute any method in the second aspect or the second aspect.
  • the present application provides a chip system including a processor.
  • it may further include a memory, the memory is used to store a computer program, and the processor is used to call and run the computer program from the memory, so that the device installed with the chip system executes the first aspect to the second aspect and possible implementations thereof Any method in.
  • an embodiment of the present application provides a computer storage medium.
  • the computer storage medium stores instructions, which when run on a computer, cause the computer to execute the method in the first aspect or any possible implementation of the first aspect , Or make the computer execute the method in the second aspect or any possible implementation of the second aspect.
  • the embodiments of the present application provide a computer program product containing instructions that, when run on a computer, cause the computer to execute the method in the first aspect or any possible implementation of the first aspect, or cause the computer to execute The second aspect or any possible implementation of the second aspect.
  • Figure 1 is a schematic diagram of a communication system architecture provided by this application.
  • FIG. 2 is a schematic diagram of an applicable scenario provided by this application.
  • FIG. 3 is a schematic flow chart of a communication method provided by this application.
  • FIG. 4 is a schematic diagram of a mapping relationship between channels provided by this application.
  • FIG. 5 is a schematic diagram of another mapping relationship between channels provided by this application.
  • FIG. 6 is a schematic structural diagram of a communication device provided by this application.
  • FIG. 7 is a schematic structural diagram of a communication device provided by this application.
  • FIG. 8 is a schematic structural diagram of a terminal device provided by this application.
  • FIG. 9 is a schematic structural diagram of a network device provided by this application.
  • Fig. 1 exemplarily shows a schematic diagram of the architecture of a communication system provided by the present application.
  • the communication system may include network equipment and terminal equipment.
  • a network device 101 and two terminal devices 102 are included as an example for illustration.
  • the network device 101 can communicate with the terminal device 102 in a wireless manner, mainly using Uu air interface transmission.
  • the terminal devices 102 can communicate in a wireless manner, mainly using sidelink (SL) air interface transmission, which can also be called device-to-device (D2D) communication, for example
  • SL sidelink
  • D2D device-to-device
  • V2X communication system V2V, V2P, and V2I communicate directly through side-line links.
  • the side-line link is defined for direct communication between communication equipment and communication equipment, that is to say, between communication equipment and communication equipment. Communication does not need to be forwarded through network equipment.
  • the communication between network equipment and terminal equipment is mainly the transmission of uplink signals and the transmission of downlink signals.
  • the sending end is a network device
  • the corresponding receiving end is a terminal device.
  • the sending end is a terminal device
  • the corresponding receiving end is a network device.
  • the communication between the terminal device and the terminal device is mainly D2D signal transmission
  • the transmitting end is the terminal device
  • the corresponding receiving end is also the terminal device.
  • the communication between the network equipment and the terminal equipment, and the communication between the terminal equipment and the terminal equipment can communicate through a licensed spectrum (licensed spectrum), can also communicate with an unlicensed spectrum (unlicensed spectrum), and can also communicate through a licensed spectrum and Unlicensed spectrum for communication.
  • a network device and a terminal device can use a licensed spectrum and an unlicensed spectrum for communication, and a terminal device and a terminal device can also use a licensed spectrum and an unlicensed spectrum for communication.
  • the spectrum below 6G can be used, the spectrum above 6G can also be used, or the spectrum below 6G and above 6G can also be used at the same time. This application applies to network equipment and terminal equipment, as well as between terminal equipment and terminal equipment.
  • the spectrum resources are not limited.
  • Terminal devices including devices that provide users with voice and/or data connectivity, such as handheld devices with wireless connection functions, or processing devices connected to wireless modems.
  • the terminal device can communicate with the core network via a radio access network (RAN), and exchange voice and/or data with the RAN.
  • RAN radio access network
  • the terminal equipment may include user equipment (UE), wireless terminal equipment, mobile terminal equipment, device-to-device communication (device-to-device, D2D) terminal equipment, vehicle-to-everything (V2X) Terminal equipment, machine-to-machine/machine-type communications (M2M/MTC) terminal equipment, Internet of things (IoT) terminal equipment, subscriber unit (subscriber unit), subscriber station (subscriber station), mobile station (mobile station, MS), remote station (remote station), access point (access point, AP), remote terminal (remote terminal), access terminal (access terminal), user terminal (user terminal), mobile terminal (mobile terminal, MT), virtual reality (virtual reality, VR) terminal, augmented reality (augmented reality, AR) terminal, wireless terminal in industrial control (industrial control), autonomous driving (self driving) Wireless terminals in the smart city, wireless terminals in remote medical, wireless terminals in smart grid, wireless terminals in transportation safety, wireless terminals in smart cities, and smart cities.
  • IoT Internet of things
  • IoT Internet
  • the wireless terminal, user agent, or user device in a smart home may include mobile phones (or "cellular" phones), computers with mobile terminal equipment, portable, pocket-sized, handheld, and computer-built mobile devices.
  • mobile phones or "cellular" phones
  • PCS personal communication service
  • SIP session initiation protocol
  • WLL wireless local loop
  • PDA personal digital assistants
  • restricted devices such as devices with low power consumption, or devices with limited storage capabilities, or devices with limited computing capabilities. Examples include barcodes, radio frequency identification (RFID), sensors, global positioning system (GPS), laser scanners and other information sensing equipment.
  • RFID radio frequency identification
  • GPS global positioning system
  • laser scanners and other information sensing equipment.
  • the terminal device may also be a wearable device.
  • Wearable devices can also be called wearable smart devices or smart wearable devices, etc. It is a general term for using wearable technology to intelligently design daily wear and develop wearable devices, such as glasses, gloves, watches, clothing and shoes Wait.
  • a wearable device is a portable device that is directly worn on the body or integrated into the user's clothes or accessories. Wearable devices are not only a hardware device, but also realize powerful functions through software support, data interaction, and cloud interaction.
  • wearable smart devices include full-featured, large-sized, complete or partial functions that can be achieved without relying on smart phones, such as smart watches or smart glasses, and only focus on a certain type of application function, and need to cooperate with other devices such as smart phones.
  • Use such as various smart bracelets, smart helmets, smart jewelry, etc. for physical sign monitoring.
  • Network equipment for example, includes access network (access network, AN) equipment, which can also be referred to as wireless access network equipment, and is used to connect terminal equipment to equipment in the wireless network.
  • AN access network
  • AN access network equipment
  • a base station for example, an access point
  • V2X vehicle-to-everything
  • the access network equipment may be a roadside unit (RSU).
  • RSU roadside unit
  • the base station can be used to convert the received air frame and Internet Protocol (IP) packets to each other, as a router between the terminal device and the rest of the access network, where the rest of the access network may include an IP network.
  • IP Internet Protocol
  • the RSU can be a fixed infrastructure entity that supports V2X applications, and can exchange messages with other entities that support V2X applications.
  • the access network equipment can also coordinate the attribute management of the air interface.
  • the access network equipment may include the LTE system or the evolved base station (NodeB or eNB or e-NodeB, evolutional Node B) in the long term evolution-advanced (LTE-A), or may also include The fifth generation of mobile communication technology (the 5th generation, 5G) NR system in the next generation node B (next generation node B, gNB), transmission reception node (transmission reception point, TRP) (also known as the transceiver node), baseband processing Unit (building base band unit, BBU) and radio frequency unit (Radio Remote Unit, RRU), BBU and active antenna unit (AAU), or may also include cloud access network (cloud radio access network, Cloud RAN) ) Centralized unit (CU) and distributed unit (DU) in the system, or may also include the access point in the wireless fidelity (
  • network equipment may also include core network equipment, wireless relay equipment, and backhaul equipment.
  • core network equipment wireless relay equipment
  • backhaul equipment backhaul equipment
  • the various terminal devices and network devices described above can be deployed on land, including indoor or outdoor, handheld or vehicle-mounted. If it is located on a vehicle (for example, placed in a vehicle or installed in a vehicle), it can be regarded as an on-board terminal device, which is also called an on-board unit (OBU), for example. It can also be deployed on the water, or can also be deployed on aircraft, balloons and satellites in the air, which is not limited in this application.
  • OBU on-board unit
  • the communication system may be a global system for mobile communication (GSM), code division multiple access (CDMA) system, and wideband code division multiple access (WCDMA) system, Worldwide Interoperability for Microwave Access (WiMAX) systems, long term evolution (LTE) systems, 5G communication systems (such as new radio (NR) systems, communication systems that integrate multiple communication technologies (for example, a communication system integrating LTE technology and NR technology) may also be other communication systems, such as a public land mobile network (PLMN) system, or other communication systems that may appear in the future, which is not limited in this application.
  • GSM global system for mobile communication
  • CDMA code division multiple access
  • WCDMA wideband code division multiple access
  • WiMAX Worldwide Interoperability for Microwave Access
  • LTE long term evolution
  • 5G communication systems such as new radio (NR) systems
  • NR new radio
  • a communication system integrating LTE technology and NR technology may also be other communication systems, such as a public land mobile network (PLMN) system, or other
  • the communication system supports the HARQ feedback mechanism.
  • the HARQ feedback mechanism specifically refers to: if the terminal device successfully receives the service data from the network device, the terminal device can perform HARQ-ACK feedback on the uplink, that is, the feedback information sent by the terminal device to the network device is ACK; if the terminal device If the service data from the network device is not successfully received (such as packet loss, decoding failure, etc.), the terminal device performs HARQ-NACK feedback on the uplink, that is, the feedback information sent by the terminal device to the network device is NACK.
  • the network device When the network device receives the NACK feedback from the terminal device and the number of retransmissions has not reached the maximum number of retransmissions, the network device can then resend the last transmitted service data to the terminal device, and the terminal device can retransmit the received service data Combine with business data that has not been successfully received before to improve reception performance.
  • the HARQ feedback mechanism can request retransmission when the transmission fails, which can improve the reliability of data transmission.
  • the HARQ feedback mechanism supports one initial transmission and at least one retransmission.
  • the specific transmission is based on the content of the service data after data channel coding.
  • the data channel adopts Turbo coding, and the different coded content of the same service data can be indicated by the redundancy version (RV) sequence number in the control information.
  • the data channel of the NR system can use low density parity check code (LDPC) encoding, and the NR system supports data channel transmission based on link adaptation, that is, according to different channel conditions Choose different coding and modulation methods (including but not limited to code rate and modulation order).
  • LDPC low density parity check code
  • the data channel link adaptation method based on LDPC codes can be different from the method based on Turbo codes.
  • the different encoded content of the same service data can be indicated by the redundancy version serial number in the control information, or by other indication information, such as the redundancy version of the high-level parameter configuration. It should be understood that the encoded information of the service data sent in the initial transmission and the retransmission may be the same or different.
  • a terminal device can support at least one HARQ process. After a certain service data of a HARQ process is successfully received, the memory (for example, soft buffer) used for storing the transmission will be cleared to Prepare to use the HARQ process to receive new service data.
  • the network equipment can indicate whether the service data carried this time is the initial transmission or retransmission when scheduling.
  • one HARQ process can carry one or two service data at the same time. When two service data are carried, the two service data can adopt different coding and modulation modes. In one transmission, two service data can be both new transmission, the same retransmission, or one new transmission and the other retransmission.
  • the form and quantity of the network equipment and terminal equipment shown in FIG. 1 are only for example, and do not constitute a limitation to this application.
  • the terminal device 201 can receive service data from the network device 202, the network device 203, and the network device 204.
  • the service types or service characteristics of the service data sent by different network devices may be different, and the same network device may also send different types of service data.
  • the network device 202 can transmit service data whose service type is URLLC service to the terminal device 201
  • the network device 203 can transmit business data whose service type is IoT service to the terminal device 201
  • the network device 204 can transmit service data to the terminal device 201. It is the business data of eMBB business.
  • URLLC services mainly have ultra-high reliability (block error rate (BLER) in terms of reliability is at least 99.999%), low latency (end-to-end latency needs to be less than 1ms), and less data transmission As well as sudden, it is mainly used in wireless control in industrial manufacturing or production processes, motion control of unmanned vehicles and unmanned aircraft, and tactile interaction applications such as remote repair and remote surgery.
  • IoT services occupies a narrow bandwidth, low power consumption, wide coverage, and can be repeatedly sent, that is, they can guarantee certain reliability by themselves.
  • the eMBB service mainly has the characteristics of large transmission data volume and high transmission rate, and is mainly used in ultra-high-definition video, augmented reality (AR), virtual reality (virtual reality, VR), etc. In this scenario, if the terminal device sends feedback information to the network device after receiving the service data, it will cause the problem of relatively large communication system overhead.
  • AR augmented reality
  • VR virtual reality
  • Fig. 3 exemplarily shows a communication method provided by an embodiment of the present application.
  • the communication method is applied to the network architecture shown in any one of FIGS. 1 to 2.
  • the method can be executed by two communication devices, such as a first communication device and a second communication device, where the first communication device can be a network device or can support the network device to implement the functions required by the method.
  • the communication device or the first communication device may be a terminal device or a communication device capable of supporting the terminal device to implement the functions required by the method, and of course it may also be other communication devices, such as a chip system. The same is true for the second communication device.
  • the second communication device may be a network device or a communication device capable of supporting the functions required by the network device to implement the method, or the second communication device may be a terminal device or capable of supporting the terminal device to implement the method.
  • the communication device with the required functions can of course also be other communication devices, such as a chip system.
  • the first communication device may be a network device, the second communication device is a terminal device, or the first communication device is a network device and the second communication device is a terminal device. It is a communication device that can support the terminal device to realize the functions required by the method, or the first communication device is a terminal device, and the second communication device is a network device.
  • the method executed by the network device and the terminal device is taken as an example. As shown in Figure 3, the method includes the following steps.
  • Step 301 The network device configures indication information for each group.
  • This step 301 is optional.
  • Each packet in the network device may be obtained by the network device grouping multiple services, or each packet that has been grouped may be directly stored in the network device, which is not limited in this application.
  • the network equipment can group multiple services in different ways. The following three exemplary implementation ways are described in detail.
  • the network device can group multiple services according to service characteristics. It can also be understood that the services divided into a group have relatively similar service characteristics. Among them, the service characteristics include but are not limited to: service reliability requirements, service coverage capabilities, service delay requirements, service data volume, service mobility requirements, or service priorities.
  • a network device groups multiple services according to service characteristics, it can group according to one service characteristic, or group according to a combination of multiple service characteristics, which is not limited in this application.
  • Example 1 based on business coverage capabilities.
  • the network equipment can group multiple services according to the service coverage capabilities in the service characteristics. For example, you can group services with stronger coverage capabilities into one group, and group services with weaker coverage capabilities into another group.
  • IoT services and MTC services that is, IoT services and MTC services have strong coverage capabilities
  • the IoT services and MTC (such as eMTC, or mMTC) services can be grouped into one group, and the remaining services Divide into another group.
  • the coverage capacity can also be divided into three levels: high, medium, and low, and one level corresponds to one group.
  • Example 2 Based on business reliability requirements.
  • the network equipment can group multiple services according to the service reliability requirements in the service characteristics. For example, divide the services with higher reliability requirements into one group, and divide the services with looser reliability requirements into another. Exemplarily, services with reliability requirements greater than 99.999% (such as URLLC services) can be divided into one group, and the remaining services (such as eMBB services and other services) can be divided into another group.
  • services with reliability requirements greater than 99.999% such as URLLC services
  • eMBB services and other services can be divided into another group.
  • Example three based on business coverage and business reliability requirements.
  • the network equipment can group multiple services according to the combination of service coverage capabilities and service reliability requirements in service characteristics. For example, divide the services with strong service coverage and high service reliability requirements into one group, and divide the remaining services into another group. For another example, divide the services with strong service coverage and low service reliability requirements into one group, and divide the remaining services into another group. For another example, divide the services with weaker service coverage and higher service reliability requirements into one group, and divide the remaining services into another group. For another example, group the services with weaker service coverage and lower service reliability requirements into one group, and divide the remaining services into another group. In other words, when grouping is performed based on the combination of multiple services, the network device can decide which service characteristics to combine according to actual needs, which is not limited in this application.
  • Implementation mode two network equipment can group multiple services according to service types. It can also be understood that the services grouped into a group have the same service type.
  • service types include but are not limited to: eMBB, URLLC, mMTC, V2X, and IoT.
  • eMBB enhanced mobile broadband
  • URLLC enhanced mobile broadband
  • mMTC massive machine type
  • V2X virtualized transmission control
  • IoT infrastructure-to-live
  • Implementation mode three network equipment groups multiple services according to service types and service characteristics. It can also be understood that the services grouped into a group have the same service type and similar service characteristics.
  • the network device may group the services whose service type belongs to URLLC and whose reliability requirement is higher than 99.9999% into one group, and divide the service whose service type belongs to URLLC and whose reliability requirement is lower than 99.9999% into another group. It can also be understood that there may be differences between business characteristics of business data belonging to the same business type.
  • the network device groups multiple services according to service types and service characteristics. In this way, the service data scored in a group can have more similar characteristics, and each group can be more refined, thereby helping to improve feedback efficiency.
  • the network equipment can also divide a business into a group. That is, one business corresponds to one group.
  • the network device configures the indication information for each group, that is, the network device configures the indication information for each service.
  • the network device can configure an indication information for these 5 downlinks, and there is no need to indicate whether to feedback for each link, so that the sending feedback can be improved more accurately Information efficiency.
  • the network device chooses the above implementation method to group, which can be selected by the network device.
  • the network device can be selected randomly, or the network device can also be selected based on certain factors.
  • the network device needs to determine that the terminal device receives a certain Or in the case of service data of certain service characteristics, the network device can choose the above realization method to group; or, which realization method chooses to group by the above can also be predefined by the protocol. This application does not restrict this.
  • the foregoing groups include the first identifier, and the first identifier in each group is different, and it can also be understood that the group is embodied in a manner of different first identifiers.
  • the first identifier may be a service identifier, and the service identifier may distinguish different services.
  • the first identifier may identify a service.
  • the first identifier may identify a group of services.
  • one first identifier can identify one service, that is, different services can be distinguished by different first identifiers.
  • a first identifier can identify a business.
  • the first identifier may be TMGI, or G-RNTI, or MCCH, or SC-MCCH.
  • a TMGI is a unique identifier of a service (for example, a broadcast-multicast service), that is, TMGI can be used to distinguish different services; further, TMGI is composed of two domains, PLMN ID and service ID (service ID).
  • a service is configured with one SC-MCCH in a specific cell or with one MCCH in an MBSFN area, that is, either SC-MCCH or MCCH can uniquely identify a service. It should be noted that TMGI, SC-MCCH, or MCCH can be used to identify services when the terminal device is in an IDLE state.
  • the network device can assign a service identifier to each service, such as G-RNTI, that is, the terminal device is in RRC In the connected state, the transmitted service can be identified by G-RNTI; further, G-RNTI is a scrambling code for MTCH or SC-MTCH scrambling.
  • RRC radio resource control
  • group #1 includes three first identifiers (ie, first identifier 1, first identifier 2, and first identifier 3), and group #2 includes two first identifiers (ie, first identifier 4 and The first identifier 5) is taken as an example. If the first identifier is TMGI, group #1 includes TMGI-1, TMGI-2, and TMGI-3, and group #2 includes TMGI-4 and TMGI-5.
  • group #1 ⁇ G-RNTI-1, G-RNTI-2, G-RNTI-3 ⁇
  • group #2 ⁇ G-RNTI-4, G-RNTI -5 ⁇
  • the first identifier is SC-MCCH
  • group #1 ⁇ SC-MCCH-1, SC-MCCH-2, SC-MCCH-3 ⁇
  • group #2 ⁇ SC-MCCH-4, SC- MCCH-5 ⁇
  • the first identifier is MCCH
  • group #1 ⁇ MCCH-1, MCCH-2, MCCH-3 ⁇
  • group #2 ⁇ MCCH-4, MCCH-5 ⁇ .
  • the number of packets is related to the bits of TMGI. If the bit of TMGI is 5, the maximum number of packets is 32; if the bit of TMGI is 8, the maximum number of packets is 256.
  • the network device can configure indication information for each group.
  • the instruction information may include, but is not limited to, one or a combination of the following situations.
  • the indication information may include the first type of parameter, and the first type of parameter is used to indicate feedback or no feedback.
  • the indication information may be a feedback switch. Specifically, it can include two states: one is on and the other is off.
  • the opening can be represented by the high-level parameter being ON, and the high-level parameter being OFF as the indication; or the high-level parameter is set to 1, and the high-level parameter is set to 0 to indicate; or it can also be other distinguishing between on and off.
  • this application does not limit the specific representation form of on and off.
  • the terminal device when the status of the feedback switch corresponding to a packet #2 is off, it means that the terminal device does not need to send feedback information to the network device after receiving the data belonging to the service in the packet #2.
  • the indication information may also be an indication field, and the network device and the terminal device may pre-appoint specific forms of feedback and non-feedback.
  • the indication information may also be high-level parameters, such as RRC signaling.
  • the network equipment configures which indication information for which groups, and four ways of how the network equipment determines which indication information is configured for which groups are given as follows.
  • the network device can configure indication information for each group according to the service characteristics of each group. For example, for groups with high service reliability requirements, you can configure indication information indicating feedback; for groups with low service reliability requirements, you can configure indication information indicating no feedback.
  • the indication information as the feedback switch as an example, the state of the feedback switch configured by the network device for the group with higher service reliability requirement is ON, and the state of the feedback switch configured for the group with lower service reliability requirement is OFF.
  • more stable technology will be used for service data transmission, which can ensure the reliability of transmission to a certain extent, so it can also be configured to indicate non-feedback indication information; the requirement for service reliability is higher.
  • the bit error rate or block error rate is about 90%, and reliability requirements can be met with one transmission. Therefore, it is also possible to configure indication information indicating no feedback.
  • indication information indicating no feedback.
  • the terminal device fails to receive the first data transmitted initially, it will report to the network device Sending feedback information may exceed the time preset, resulting in invalid transmission of the feedback information. Therefore, for such packets with low service delay requirements, the network device usually transmits the first data multiple times by itself.
  • the network device can configure the indication information that indicates no feedback for the packet; for packets with relatively low service delay requirements (that is, the required delay is higher), the network device may configure the indication information that indicates feedback, thereby improving data Reliability of transmission.
  • the indication information as the feedback switch as an example, the state of the feedback switch configured by the network device for packets with lower service delay requirements is on, and the state of the feedback switch configured for packets with higher service delay requirements is off.
  • packets with high service reliability requirements and high service delay requirements they can be configured to indicate non-feedback indication information.
  • the bit error rate or block error rate is required to reach If 99.999% or higher is required, a more stable technology will be used for service data transmission, which can ensure the reliability of transmission to a certain extent. In this case, feedback is not required.
  • the delay is required to be low, in order to prevent the retransmission time from exceeding the budget time, causing the retransmission to be invalid transmission, and there is no need to feedback to the network equipment.
  • QoS quality of service
  • the network device can configure indication information for each group according to the service type of each group. For example, the network device may configure the indication information used to indicate feedback for packets whose service type belongs to URLLC, and the indication information used to indicate non-feedback for packets belonging to other service types.
  • the network device can configure indication information for each packet according to the current communication state between the terminal device and the network device (which can also be understood as a link resource). For example, retransmission may cause transmission congestion. Based on the communication status, the network device can configure the indication information for each packet to indicate no feedback.
  • the service of each packet is the MBMS service. Since MBMS is used by the network device to send the first data to multiple terminal devices, if multiple terminal devices send feedback information to the network device at the same time, it may cause insufficient link resources, thus Cause transmission congestion.
  • the network device can configure information for each group according to the current resource (such as time-frequency resource) occupancy.
  • the current resource is relatively scarce and there is no resource for transmitting feedback information.
  • the network device can be configured for each group to indicate No feedback instructions.
  • the network device can turn off the HARQ feedback mechanism, specifically, the terminal device can be notified to turn off the HARQ feedback mechanism through high-level signaling, or each packet can be configured with indication information indicating no feedback.
  • the above four ways of configuring indication information for each group are just examples, and this application is not limited to configuring indication information for each group.
  • which method the network device chooses to configure the instruction information for each group can be selected by the network device itself.
  • the network device can be selected randomly, or the network device can also be selected based on certain factors. For example, the current resources are relatively scarce.
  • the network device may choose to configure the indication information for each group as in the fourth method above; or, choose which method to configure the indication information for each group as described above, or it may be predefined through the protocol. This application does not restrict this.
  • the indication information may include a second type of parameter, and the second type of parameter is used to indicate the threshold of feedback decision parameter.
  • the feedback decision parameter may include any one or a combination of any of the following: distance, RSRP, and SINR. That is, the feedback decision parameter may be distance, or RSRP, or SINR, or distance and RSRP, or distance and SINR, or RSRP and SINR, or distance, RSRP and SINR.
  • the feedback decision parameters listed above are only examples, and this application does not limit the specific content included in the feedback decision parameters.
  • the aforementioned distance may refer to the geographic distance between the terminal device and the network device (geographical distance), and the geographic distance represents the absolute distance between the network device and the terminal device. It is understandable that for the terminal equipment in the cell center, due to the relatively close distance to the network equipment, it can be considered that the transmission effect between the network equipment and the terminal equipment is better at this time. For the terminal equipment at the edge of the cell, due to the long distance from the network equipment, a better transmission effect may not be obtained. In other words, when the distance between the network device and the terminal device can be less than a certain value, a better transmission effect can be obtained. Therefore, when the distance is the feedback decision parameter, the distance threshold may be a specific distance value (which may be referred to as the first distance value below).
  • the terminal device may not receive the feedback information; or even if the network device receives the feedback information from the terminal device and retransmits the business data again, it is very likely that the terminal device is in the blind area covered by the network device. Still cannot successfully receive the retransmitted service data. In other words, if the distance between the network device and the terminal device is relatively short, a better transmission effect cannot be obtained.
  • the distance threshold may also be a specific distance value (which may be referred to as the second distance value below). Or, because the distance between the terminal device and the network device is too close or too far, a good transmission effect cannot be obtained. Therefore, when the distance between the network device and the terminal device is within a certain range, the terminal device sends feedback to the network device Information is meaningful. It can also be understood that when the distance is the feedback decision parameter, the distance threshold can be a distance range. It should be noted that when the distance is used as the feedback decision parameter, the threshold of the feedback decision parameter may be a certain distance value or a distance range. Moreover, when the distance is used as the feedback decision parameter, there is no need to consider the current channel conditions.
  • the distance threshold or the value of a certain distance can be empirical values, historical data statistics, or typical values, etc.
  • the threshold of the feedback decision parameter corresponds to a certain distance value or the corresponding distance range can make the terminal device and The distance between network devices is more consistent with the normal communication situation.
  • the aforementioned RSRP is a related parameter that can represent the strength of a wireless signal in a communication system, and refers to the average value of signal power received on all resource elements (resource elements, RE) that carry a reference signal in a certain symbol. It is understandable that when the RSRP value is small, it indicates that the wireless signal coverage is relatively poor. For example, when the RSRP of the receiving end is less than -105dBm, the wireless signal coverage is relatively poor and the service cannot be initiated.
  • the terminal device When the RSRP value is small, the terminal device sends feedback information to the network device, and the network device may not receive the feedback information, or even if the network device receives the feedback information from the terminal device and retransmits the service data again, due to wireless The signal coverage is poor, and it is very likely that the terminal device still cannot successfully receive the retransmitted service data. That is to say, when the RSRP value is small, the terminal device sends feedback information to the network device, and a better transmission effect cannot be obtained. When the RSRP value is large (such as >-75dBm), it indicates that the wireless signal coverage is better. In this case, the terminal device sends feedback information to the network device, and better transmission results may be obtained.
  • the RSRP threshold may be an empirical value, historical data statistical value, or a typical value, etc. The RSRP threshold can make the terminal device and the network device more consistent with the normal communication conditions.
  • SINR may also be referred to as the signal-to-interference and noise ratio, which refers to the ratio of the strength of the useful signal received by the terminal device to the strength of the interference signal (noise and interference) received. It can be understood that the value of SINR is small, indicating that the channel condition is relatively poor, or the receiver noise is too high, or the useful transmission power level received by the receiver is low.
  • the terminal device sends feedback information to the network device, and the network device may not receive the feedback information, or even if the network device receives the feedback information from the terminal device and retransmits the service data again Since the strength of the useful signal is small, even if the terminal device receives the retransmitted service data, it is very likely that the terminal device cannot successfully decode the retransmitted service data, and therefore may not be able to obtain a better transmission effect.
  • the SINR value is large (for example, >20dB), it indicates that the strength of the useful signal is better. In this case, the terminal device sends feedback information to the network device, which may obtain a better transmission effect.
  • the threshold of the SINR may be an empirical value, a statistical value of historical data, or a typical value, etc. The threshold of the SINR can make the terminal device and the network device more consistent with the normal communication conditions.
  • the configured feedback decision parameter threshold may be different or the same, which is not limited in this application.
  • the threshold of the feedback decision parameter in this application may also be pre-configured by the terminal device, or pre-defined. Or it can be pre-defined by agreement, which is not limited in this application.
  • which feedback decision parameter the network device chooses can be selected by the network device itself, for example, the network device can select randomly; or it can also be a protocol predefined network device to choose which feedback decision parameter. This application does not limit this.
  • the indication information may include the first-type parameters and the second-type parameters.
  • first-type parameters and the second-type parameters please refer to the introduction of the above-mentioned case 1 and case 2, respectively, and will not be repeated here.
  • the indication information may include preset conditions.
  • feedback is when the current actual distance between the network device and the terminal device falls within a certain distance range, or when the distance between the network device and the terminal device is greater than a certain distance value; or when the network device and the terminal device are different Feedback when the distance between the two is less than a certain distance; or when the current SINR corresponding to the first data is greater than a certain SINR; or when the current RSRP corresponding to the first data is greater than a certain RSRP.
  • the indication information may also include the first type of parameters and preset conditions.
  • the first type of parameter represents feedback
  • the preset condition is feedback when the current actual distance between the network device and the terminal device falls within a certain distance range.
  • the first type of parameter represents feedback
  • the preset condition is that the current SINR corresponding to the first data is greater than a certain SINR value
  • the first type of parameter represents feedback
  • the preset condition is the current RSRP corresponding to the first data Feedback when it is greater than a certain RSRP value.
  • the indication information may also include the second type of parameters and preset conditions.
  • the second type of parameter is the threshold of the feedback decision distance
  • the preset condition can be feedback when it is greater than the feedback decision distance threshold, or feedback when it is less than the feedback decision distance threshold, or fall into the feedback The threshold time feedback of the judgment distance.
  • the feedback decision parameter is RSRP
  • the second type of parameter is the threshold of the feedback decision RSRP
  • the preset condition may be feedback when it is greater than the threshold of the feedback decision RSRP.
  • the feedback decision parameter is SINR
  • the second type of parameter is the threshold of the feedback decision SINR
  • the preset condition may be feedback when the SINR is greater than the feedback decision threshold.
  • the indication information may also include the first type of parameter, the second type of parameter and the preset condition.
  • the first type of parameter represents feedback
  • the feedback decision parameter is distance
  • the second type of parameter represents the threshold of the feedback decision distance
  • the preset condition is feedback when the threshold is greater than the distance of the feedback decision parameter
  • the first parameter represents feedback
  • the feedback decision parameter is SINR
  • the second type parameter represents the threshold of the feedback decision SINR
  • the preset condition can be feedback when the threshold is greater than the feedback decision SINR
  • the first type parameter represents feedback
  • the feedback decision parameter is RSRP
  • the second parameter represents The threshold of the feedback decision RSRP
  • the preset condition may be greater than the threshold of the feedback decision RSRP.
  • the first type of parameters can refer to the introduction of the above case 1
  • the second type of parameters can refer to the description of the above case 2
  • the third type of parameters can refer to the introduction of the above case 3.
  • the network equipment can choose the indication information in the above-mentioned situation, for example, the network equipment can be selected randomly, or it can be selected according to the grouping basis; or, choose the above-mentioned situation
  • the instruction information can also be pre-defined through the protocol. This application does not restrict this.
  • Step 302 The network device sends the grouping information to the terminal device.
  • the terminal device receives packet information from the network device.
  • the grouping information is used to indicate the first identifier included in one or more groups.
  • the first identifier includes but is not limited to the TMGI, G-RNTI, MCCH or SC-MCCH described above.
  • the grouping information may also include indication information corresponding to each grouping.
  • one group corresponds to one indication information.
  • the indication information may be indicated in an explicit manner or may also be indicated in an implicit manner.
  • the grouping information indicates the first identifier included in each group
  • the indication information corresponding to each grouping can be sent to the terminal device through a signaling.
  • the network device can be sent to the terminal device through RRC signaling.
  • the grouping information included in it indicates the first identifier included in each group and the indication information corresponding to each group.
  • the grouping information indicating the first identifier included in each grouping, and the indication information corresponding to each grouping may also be sent to the terminal device through two signalings.
  • the network equipment can also be sent to the terminal equipment through RRC signaling.
  • One RRC signaling includes grouping information to indicate the first identifier included in each group, and another RRC signaling includes indication information corresponding to each group.
  • RRC signaling does not affect each other. Further, when two signalings are sent to the terminal equipment, they may be sent to the terminal equipment twice, that is, one signaling is sent to the terminal equipment at a time, or both signalings are sent to the terminal equipment at a time. It is understandable that the network device may send packet information to the terminal device in the form of multicast (also called multicast), or may also send the packet information to the terminal device in the form of broadcast.
  • multicast also called multicast
  • the network device may send packet information to the terminal device through high-level signaling.
  • the grouping information can be carried in high-level signaling.
  • the service is a multimedia broadcast multicast service (MBMS)
  • each grouping information can be carried in single cell point-to-multipoint (single cell point-to-multipoint, SC-PTM) configuration information.
  • high-level signaling may also be referred to as configuration information.
  • the network device may also send packet information to the terminal device through a system message.
  • grouping information can be carried in system messages.
  • the system message may be an information block (system information block x, SIBx), such as SIB13 in MBMS or SIB20 in MBMS.
  • the network device may also dynamically notify the terminal device of the indication information corresponding to each group through downlink control information (DCI).
  • DCI downlink control information
  • Step 303 The network device sends the first data to the terminal device.
  • the terminal device receives the first data from the network device.
  • the first data may also be referred to as transport block, service data, or user data.
  • the first data may be carried on a physical multicast channel (PMCH) or on a physical downlink shared channel, PDSCH).
  • PMCH physical multicast channel
  • PDSCH physical downlink shared channel
  • the network device may send the first data to multiple terminal devices in the form of broadcast, and may also send the first data to the terminal devices in the form of multicast (multicast).
  • Step 304 The terminal device determines the first group to which the first data belongs, and determines whether it is necessary to send feedback information to the network device according to the indication information corresponding to the first group. In an embodiment, the terminal device determines the first group to which the first data belongs, and determines that it needs to send feedback information to the network device according to the indication information corresponding to the first group.
  • the first group is one of one or more groups.
  • the feedback information may be HARQ feedback information, and the HARQ feedback information includes an acknowledgement character (acknowledgement, ACK) or a negative acknowledgement character (negative acknowledgement, NACK).
  • the feedback information may also be channel state information (channel state information, CSI), and CSI includes channel quality information (channel quality information, CQI), precoding matrix information (precoding matrix information, PMI), and rank information (rank information, RI) .
  • the feedback information may also be HARQ feedback information and CSI.
  • the feedback information is HARQ feedback information or CSI or HARQ feedback information and CSI can be designated by the network device and notified to the terminal device, or pre-appointed by the network device and the terminal device, or it can be the terminal device It is default, or it can be pre-defined by agreement, which is not limited in this application.
  • what is the feedback information notified by the network device to the terminal device can be sent to the terminal device together with the packet information, or can be sent to the terminal device through separate signaling.
  • the terminal device can determine the first group to which the first data belongs in the following manner.
  • MBMS usually includes multimedia broadcast single frequency network (multimedia broadcast single frequency network, MBSFN) transmission and single cell point-to-multipoint (single cell point-to-multipoint, SC-PTM) transmission two transmission methods.
  • MBSFN multimedia broadcast single frequency network
  • SC-PTM single cell point-to-multipoint
  • the MBSFN transmission method is also called the single frequency network (SFN) transmission method.
  • SFN single frequency network
  • This MBSFN transmission mode can save frequency resources and improve spectrum utilization.
  • the diversity effect brought by this multi-cell co-frequency transmission can solve problems such as blind area coverage, enhance the reliability of reception and increase the coverage rate.
  • the terminal equipment in this application refers to the terminal equipment in the MBSFN area.
  • the MBSFN area refers to a group of cells that realize MBSFN transmission through coordination, and the entire MBSFN area will be regarded as one MBSFN cell.
  • the group of cells realizes MBSFN transmission through coordination, uses the same air interface resources, and transmits the same MBMS. Or it can be understood that several cells are pre-configured to form an MBSFN combined area. Multiple network devices in the combined area use the same radio resources to transmit MBMS, that is, send the same service data to the combined area at the same time. All terminal equipment.
  • the first group to which the first data belongs can be determined in combination with the mapping relationship between the channels shown in FIG. 4.
  • the logical channels in the MAC layer mainly include multicast control channel (multicast control channel, MCCH) and multicast transmission channel (multicast traffic channel, MTCH).
  • MCCH multicast control channel
  • MTCH multicast traffic channel
  • MCCH is used to transmit MBMS control information
  • MTCH is used to transmit MBMS service data, such as first data.
  • the logical channels MCCH and MTCH are multiplexed onto a transmission channel (multicast channel, MCH).
  • one MTCH and one MCCH can be multiplexed into one MCH media access control protocol data unit (MAC protocol data unit, MAC PDU), or only one MTCH is carried in one MCH MAC PDU.
  • MCH is mapped to PMCH.
  • the terminal device receives the PMCH carrying the first data from the physical channel, referring to FIG. 4, according to the mapping relationship between the PMCH and the MCH, the MCH corresponding to the PMCH carrying the first data can be determined, and then according to the relationship between the MCH and the MCCH The mapping relationship can determine the MCCH corresponding to the first data. Because one MCCH corresponds to one MBSFN area, that is, each MBSFN area has one MCCH. In this way, one MCCH can be used to identify a service, so it is determined that the MCCH corresponding to the first data belongs to The group is the first group.
  • MAC protocol data unit MAC protocol data unit
  • the SC-PTM transmission mode refers to MBMS broadcasting the first data to specific cells, and at least one terminal device in these specific cells must be interested in the first data broadcast. That is to say, in the SC-PTM transmission, the terminal device refers to the terminal device that is interested in the broadcasted first data.
  • the logical channels in the MAC layer mainly include SC-MCCH and single cell multicast traffic channel (SC-MTCH). Similarly, SC-MCCH is used to transmit MBMS control information, and SC-MTCH is used to transmit MBMS service data, such as first data.
  • the logical channels SC-MCCH and SC-MTCH are mapped to the downlink shared channel (DL-SCH), and the DL-SCH is mapped to the PDSCH.
  • the terminal device when the terminal device receives the PDSCH carrying the first data, referring to FIG. 5, according to the mapping relationship between the PDSCH and the DL-SCH, determine the DL-SCH corresponding to the PDSCH carrying the first data, Then, according to the mapping relationship between DL-SCH and SC-MCCH, the SC-MCCH corresponding to the first data can be determined, and because a service can only be configured with one SC-MCCH in a specific cell, the first The group to which the SC-MCCH corresponding to the data belongs is determined as the first group. Further, when the terminal device is in the RRC connected state, the network device will configure a G-RNTI for the first data.
  • the terminal device can determine that the first data corresponds to G-RNTI, and because the scrambling code for SC-MTCH is G-RNTI, that is, one G-RNTI can identify one service. Therefore, the group to which the G-RNTI corresponding to the first data belongs can be determined For the first group.
  • the G-RNTI corresponding to the first data can be determined, and then from the mapping relationship between G-RNTI and TMGI The TMGI corresponding to the G-RNTI corresponding to the first data is determined, and the group in which the TMGI corresponding to the first data is located is determined as the first group.
  • the terminal device determines whether it needs to send feedback information to the network device according to the indication information corresponding to the first group.
  • the indication information is the first type of parameter. If the terminal device determines that the first type of parameter corresponding to the first group represents feedback, the terminal device sends feedback information to the network device; if the terminal device determines the first type of parameter The first type of parameter corresponding to a group indicates no feedback, and the terminal device does not send feedback information to the network device. Specifically, when the first type of parameter is a feedback switch, if the terminal device determines that the status of the feedback switch corresponding to the first group is on, the terminal device sends feedback information to the network device; if the terminal device determines the feedback switch corresponding to the first group If the status is off, the terminal device does not send feedback information to the network device.
  • the first type of parameter is a feedback switch
  • the indication information is a second type of parameter.
  • the terminal device determines that the value of the feedback decision parameter corresponding to the first data satisfies the threshold of the feedback decision parameter, it sends the feedback information to the network device; or, the terminal When the device determines that the value of the feedback decision parameter corresponding to the first data does not meet the threshold of the feedback decision parameter, it does not send feedback information to the network device.
  • the feedback decision parameter is distance.
  • the threshold of the feedback decision parameter can be referred to as the threshold of distance.
  • the threshold of the distance corresponding to the first group is called the threshold of the first distance.
  • the threshold of the first distance can be a range or a certain distance value (such as the first distance value or the second distance value). Combining the above introduction about distance as a feedback decision parameter, here the first distance threshold is the distance
  • the range and a certain distance value are respectively described as examples.
  • the threshold of the first distance is a distance range.
  • the terminal device can determine the current actual distance between the terminal device and the network device according to the location information of the network device and its own current location information.
  • the current actual distance is the value of the feedback decision parameter corresponding to the first data; if the terminal device If the determined current actual distance is within the distance range, the terminal device sends feedback information to the network device; if the current actual distance determined by the terminal device is not within the distance range, the terminal device does not send feedback information to the network device.
  • the first distance threshold is [100m-200m] if the current actual distance determined by the terminal device is 150m, 150m is within the range of [100m-200m], so the terminal device sends feedback information to the network device; if the terminal device determines The current actual distance is 300m. If 300m is not within the range of [100m-200m], the terminal device does not need to send feedback information to the network device.
  • the threshold of the first distance is a first distance value
  • the terminal device when the current actual distance is less than the first distance value, the terminal device sends feedback information to the network device.
  • the terminal device can determine the current actual distance between the terminal device and the network device based on the location information of the network device and its own current location information. If the current actual distance determined by the terminal device is less than the first distance value, then The terminal device sends feedback information to the network device; if the current actual distance determined by the terminal device is greater than the first distance value, the terminal device does not need to send feedback information to the network device.
  • the first distance value is 200m.
  • the terminal device sends feedback information to the network device; if the terminal device determines that the current actual distance is 300m, and 300m is greater than 200m, then The terminal device does not need to send feedback information to the network device.
  • the threshold of the first distance is a second distance value
  • the terminal device when the current actual distance is greater than the second distance value, the terminal device sends feedback information to the network device.
  • the terminal device can determine the current actual distance between the terminal device and the network device according to the location information of the network device and its own current location information. If the current actual distance determined by the terminal device is greater than the second distance value, then The terminal device sends feedback information to the network device; if the current actual distance determined by the terminal device is less than the second distance value, the terminal device does not need to send feedback information to the network device.
  • the second distance value is 100m.
  • the terminal device sends feedback information to the network device; if the terminal device determines that the current actual distance is 50m, and 50m is less than 200m, then The terminal device does not need to send feedback information to the network device.
  • the terminal device determines that the current actual distance is within the distance range, and the current actual distance is not within the distance range. No feedback is given. It can be the default of the terminal device; or the network device can notify the terminal device, such as the network device in advance. To the terminal device, or send to the terminal device along with the instruction information; or it may be pre-arranged by the terminal device and the network device, or it may be predefined by the protocol, which is not limited in this application. Similarly, the terminal device determines that the current actual distance is less than the first distance value feedback, or is greater than the second distance feedback, which may be the default of the terminal device; or it may be notified by the network device to the terminal device, which may be notified in advance or randomly. The instruction information is sent to the terminal device together; or it may be agreed in advance by the terminal device and the network device, or it may be predefined by the protocol, which is not limited in this application.
  • the network device can carry the location information of the network device in the first data; or the network device can send its own location information to the terminal device in advance. For example, after the network device establishes a connection with the terminal device, the network device will The location information is notified to the terminal device; or when the terminal device determines that it needs to know the location information of the network device, it sends a request to the network device to obtain the location information of the network device, and the network device sends a response to the terminal device. The response includes the network Location information of the device.
  • the terminal device can determine its current location through its internal gyroscope and sensors.
  • the feedback decision parameter is RSRP
  • the threshold of the feedback decision parameter may be referred to as the RSRP threshold
  • the RSRP threshold corresponding to the first group may be referred to as the first RSRP threshold.
  • the terminal device may first measure the current channel according to the measurement signal (also referred to as the reference signal) to obtain a current RSRP value.
  • the current RSRP value is It is the value of the feedback decision parameter corresponding to the first data, and the current RSRP value can reflect the current channel state.
  • the terminal device receives the first data, if the terminal device determines that the current RSRP value is less than the first RSRP threshold, the terminal device does not send feedback information to the network device; if the terminal device determines that the current RSRP value is greater than or equal to the first RSRP The terminal device sends feedback information to the network device.
  • the first RSRP threshold is -80dB
  • the terminal device determines that the current RSRP value is -76dB
  • the terminal device sends feedback information to the network device; when the terminal device determines that the current RSRP value is -106dB, the terminal device does not need to The network device sends feedback information.
  • the terminal device determines that the current RSRP value is less than the threshold of the first RSRP and does not feedback.
  • the threshold feedback greater than the first RSRP may be the default of the terminal device, or the network device may notify the terminal device in advance, or it may be It is predefined by the agreement, and this application does not limit it.
  • the feedback decision parameter is SINR.
  • the threshold of the feedback decision parameter may be referred to as the SINR threshold, and the threshold of the SINR corresponding to the first group may be referred to as the first SINR threshold.
  • the terminal device may first determine the current SINR value according to the first data, that is, the terminal device determines the ratio of the power of the first data to the interference noise power as the current SINR
  • the value of the current SINR is the value of the feedback decision parameter corresponding to the first data. If the terminal device determines that the current SINR value is less than the first SINR threshold, the terminal device does not send feedback information to the network device; if the terminal device determines that the current SINR value is greater than or equal to the first SINR threshold, the terminal device sends to the network device Feedback.
  • the first SINR threshold is 0.8, and when the terminal device determines that the current SINR value is 0.9, the terminal device sends feedback information to the network device.
  • the terminal device determines that the current SINR value is 0.5, the terminal device does not need to send feedback information to the network device. It should be noted that the terminal device determines that the current SINR value is less than the first SINR threshold and does not feedback.
  • the threshold feedback greater than the first SINR may be the default of the terminal device, or the network device may notify the terminal device in advance, or it may be It is predefined by the agreement, and this application does not limit it.
  • the feedback decision parameters are distance and RSRP, where the threshold of the feedback decision parameter is the combination of the distance threshold and the RSRP threshold.
  • the threshold of the feedback decision parameter corresponding to the first group can be called the first distance The combination of the threshold and the threshold of the first RSRP.
  • the terminal device may first determine whether the current actual distance meets the first distance threshold, and when the current actual distance meets the first distance threshold, then determine whether the current RSRP value meets the first RSRP threshold. Or when it is determined that the current RSRP value meets the first RSRP threshold, then determine whether the current actual distance meets the first distance threshold, or at the same time determine whether the current RSRP value of the terminal device meets the first RSRP threshold, and whether the current actual distance Meet the threshold of the first distance.
  • the terminal device can randomly choose which decision to perform first, or it can predefine the decision sequence, or the network device can indicate the decision sequence to the terminal device, or It may also be that the terminal device determines the order of judgment based on certain factors, which is not limited in this application.
  • the feedback decision parameter can also be a combination of distance and SINR.
  • the threshold of the feedback decision parameter is a combination of the distance threshold and the SINR threshold; or the feedback decision parameter can be a combination of RSRP and SINR.
  • the threshold of the feedback decision parameter is the combination of the RSRP threshold and the SINR threshold; or the feedback decision parameter can be a combination of distance, RSRP, and SINR.
  • the threshold of the feedback decision parameter is the distance threshold, the RSRP threshold, and the SINR threshold. combination.
  • the order of the terminal equipment decision can refer to the description of the above example D, which will not be repeated here.
  • the indication information is the first type of parameter and the second type of parameter.
  • the terminal device determines that the first type parameter corresponding to the first group to which the first data belongs represents feedback, and the value of the feedback decision parameter corresponding to the first data satisfies the threshold of the feedback decision parameter, it sends feedback information to the network device; or the terminal device is in When it is determined that the first-type parameter corresponding to the first group represents feedback, and the value of the feedback decision parameter corresponding to the first data does not meet the threshold of the feedback decision parameter, there is no need to send feedback information to the network device; or the terminal device determines the first group
  • the corresponding first-type parameter indicates that no feedback is provided, and when the value of the feedback decision parameter corresponding to the first data meets the threshold of the feedback decision parameter, there is no need to send feedback information to the network device; or the terminal device determines the first packet corresponding to the first packet.
  • the class parameter means no feedback and the value of the feedback decision parameter corresponding to the first data does not meet the feedback decision parameter threshold, there is no need to send feedback information to the network device; or the terminal device is determining the first class corresponding to the first packet
  • the feedback parameter means no feedback, and the value of the second type parameter can no longer be determined.
  • the first type of parameter corresponding to the first group indicates that the feedback determination process can refer to the above-mentioned determination process based on scenario 1, and the value of the feedback decision parameter meets the threshold of the feedback decision parameter can refer to the above-mentioned scenario 2 (such as example A, example B) And the introduction of example C), I will not repeat it here.
  • the terminal device may first determine the first type of parameters, and then determine the second type of parameters when it is determined that the first type of parameters indicate feedback; or it may first determine the second type of parameters, and use the In the case of indicating feedback, the first type of parameter is determined, and this application does not limit whether the first type of parameter is determined first or the second type of parameter is determined first.
  • the instruction information is a preset condition. If the preset condition is that the current actual distance between the network device and the terminal device falls within a certain distance range, the terminal device can determine the location information of the network device and its own current location information after receiving the first data The current actual distance between the terminal device and the network device is calculated. If the current actual distance determined by the terminal device is within the distance range in the preset condition, the terminal device sends feedback information to the network device; otherwise, the terminal device does not need to The network device sends feedback information.
  • the preset condition is that the current SINR corresponding to the first data is fed back when it is greater than a certain SINR value.
  • the terminal device can determine the current SINR corresponding to the first data. If the first data determined by the terminal device is If the corresponding current SINR is greater than a certain SINR value in the preset condition, the terminal device sends feedback information to the network device; otherwise, the terminal device does not need to send feedback information to the network device.
  • the preset condition is that when the current RSRP corresponding to the first data is greater than a certain RSRP value, the terminal device can determine the current RSRP corresponding to the first data after receiving the first data. If the terminal device determines the first data If the corresponding current RSRP is greater than a certain RSRP value in the preset condition, the terminal device sends feedback information to the network device; otherwise, the terminal device does not need to send feedback information to the network device.
  • the indication information includes the first type of parameters and preset conditions. Taking the preset condition that the current actual distance between the network device and the terminal device falls within a certain distance range as an example, the terminal device determines that the first type of parameter corresponding to the first packet described in the received first data indicates feedback , It is also necessary to further determine whether the current actual distance between the terminal device and the network device falls within the distance range, if it falls, then feedback; if it does not fall, no feedback is required.
  • the terminal device determines that the first type of parameter corresponding to the first packet described in the received first data indicates feedback, and further It is determined whether the current SINR corresponding to the received first data is greater than a certain SINR value in the preset condition, if it is greater, feedback is performed; if it is not greater, no feedback is required.
  • the terminal device determines that the first type of parameter corresponding to the first packet described in the received first data indicates feedback, and further It is determined whether the current RSRP corresponding to the received first data is greater than a certain RSRP value in the preset condition, and if it is greater, feedback is performed; if it is not greater, no feedback is required.
  • the terminal device Based on the indication information of the above scenario 6, if the indication information is that the first type of parameter indicates feedback, the second type of parameter indicates the threshold of the feedback decision distance, and the preset condition is that the feedback is greater than the threshold of the feedback decision parameter distance, then the terminal device will receive After the first data, the terminal device determines that the first type of parameter corresponding to the first packet described in the received first data represents feedback, and determines that the current actual distance between the network device and the terminal device is greater than the threshold of the feedback decision parameter distance , The terminal device sends feedback information to the network device. For the terminal device to determine the current actual distance, please refer to the introduction of the above example A, which will not be repeated here.
  • the indication information is that the first parameter indicates feedback, and the second type of parameter indicates the threshold of the feedback decision SINR.
  • the preset condition is that the feedback is greater than the feedback decision SINR threshold. Then, after the terminal device receives the first data, the terminal device is determining The first type parameter corresponding to the first packet in the received first data represents feedback, and when it is determined that the current SINR corresponding to the first data is greater than the feedback decision SINR threshold, the terminal device sends feedback information to the network device.
  • the indication information is that the first type of parameter indicates feedback, and the second parameter indicates the threshold of the feedback decision RSRP.
  • the preset condition may be greater than the feedback decision RSRP threshold.
  • the terminal device receives the first data and the terminal device is It is determined that the first type parameter corresponding to the first packet in the received first data indicates feedback, and when it is determined that the current RSRP corresponding to the first data is greater than the RSRP threshold for the feedback decision, the terminal device sends feedback information to the network device.
  • the terminal device may send feedback information to the network device when it is determined that the feedback information needs to be sent to the network device, and the feedback information meets the feedback condition, the feedback condition is that the first data is not correctly parsed.
  • the terminal device can send feedback information to the network device when it is determined that it needs to send feedback information to the network device and the feedback information is NACK; if the terminal device determines that it needs to send feedback information to the network device, but the feedback information is ACK , No need to send feedback information to network devices.
  • the network device does not need to know the transmission status of each first data. For example, when the network device broadcasts the first data, it wants to send the first data to many terminal devices.
  • the network device only needs to know the Which first data in a particular service feature or a particular type of service has not been correctly parsed by the terminal device, so that the network device can retransmit. For those without feedback, the network device can consider that the first data has been correctly received by the terminal device. This can reduce the number of ACK/NACK control information sent by the terminal device to the network device, and can help reduce the overhead and loss of the system while ensuring effective feedback, thereby achieving more efficient feedback. It should be understood that the incorrect analysis of the first data includes but is not limited to failure to demodulate and decode the first data.
  • the network device can configure a common resource for each group.
  • the terminal device determines that it needs to send feedback information to the network device, it can send the feedback information on the group common resource corresponding to the group, where the group common resource refers to
  • the terminal devices in a cell can be divided into multiple groups, and each group has a corresponding group common resource.
  • the terminal devices in the group can use the group common resources of the group, and the terminal devices in other groups cannot use it.
  • the network device may also be allocated a specific resource for sending feedback information on a common resource for each terminal device, where the common resource refers to a resource that can be used by all terminal devices in the same cell.
  • the network device after the network device receives the feedback information from the terminal device, if it is determined to receive an ACK, it means that the terminal device has successfully received the first data, and the network device can continue the subsequent transmission of service data; if it is determined to receive If the NACK is received, it means that the terminal device has not successfully received the first data, and the network device can retransmit the first data.
  • Fig. 6 exemplarily shows a schematic structural diagram of a communication device provided in this application.
  • the communication device in this example may be the terminal device 600, and the solution corresponding to the terminal device in FIG. 3 may be executed.
  • the terminal device 600 may also be the terminal device 102 in FIG. 1 described above, or the terminal device 201 in FIG. 2 described above.
  • the terminal device 600 includes:
  • the transceiver unit 602 is configured to receive packet information from the network device and receive first data from the network device.
  • the grouping information indicates the first identifier included in one or more groups, and the grouping information also includes indication information corresponding to each group.
  • the processing unit 601 is configured to determine the first group to which the first data belongs, and determine whether feedback information needs to be sent to the network device according to the indication information corresponding to the first group, and the first group is one of one or more groups.
  • the indication information includes but is not limited to any one of the following three situations.
  • the indication information includes the first type of parameter, where the first type of parameter is used to indicate feedback or no feedback.
  • the indication information includes a second type of parameter, where the second type of parameter is used to indicate the threshold of the feedback decision parameter, and the processing unit 601 is used to determine that the value of the feedback decision parameter corresponding to the first data satisfies the threshold of the feedback decision parameter.
  • the processing unit 601 is used to determine that the value of the feedback decision parameter corresponding to the first data satisfies the threshold of the feedback decision parameter.
  • the indication information includes the first-type parameters and the second-type parameters.
  • first-type parameters and the second-type parameters please refer to the introduction of the above-mentioned case 1 and case 2, which will not be repeated here.
  • the indication information corresponding to the first group may include the first type parameter and the second type parameter, and the processing unit 601 is further configured to: determine the first type corresponding to the first group to which the first data belongs The parameter represents feedback and when the value of the feedback decision parameter corresponding to the first data meets the threshold of the feedback decision parameter, feedback information is sent to the network device.
  • the feedback decision parameters include any one or a combination of any of the following: distance, reference signal receiving power (reference signal receiving power, RSRP), signal to interference ratio (signal to interference) plus noise ratio, SINR). That is, the feedback decision parameter can be distance, or RSRP, or SINR, or distance and RSRP, or distance and SINR, or RSRP and SINR, or distance, RSRP and SINR.
  • the first identifier is TMGI, G-RNTI, MCCH, or SC-MCCH. It should be understood that when the terminal device is in the radio resource control (RRC) connection state, the first identifier may be G-RNTI; when the terminal device is in the IDLE state, the first identifier may be TMGI, SC-MCCH Or MCCH. Specifically, optionally, whether the first identifier is SC-MCCH or MCCH may be determined by the transmission mode of MBMS.
  • RRC radio resource control
  • the first identifier It is MCCH
  • SC-PTM single cell point-to-multipoint
  • the processing unit 601 is further configured to determine that feedback information needs to be sent to the network device, and when it is determined that the feedback information satisfies the feedback condition, send the feedback information to the network device; wherein the feedback condition is: the first data is not correctly parsed.
  • processing unit 601 in the embodiment of the present application may be implemented by a processor or a processor-related circuit component
  • transceiver unit 602 may be implemented by a transceiver or a transceiver-related circuit component.
  • the embodiment of the present application also provides a communication device, which may be a terminal device or a circuit.
  • the communication device may be used to perform actions performed by the terminal device in the method embodiment shown in FIG. 3 above.
  • Fig. 7 exemplarily shows a schematic structural diagram of a communication device provided in this application.
  • the communication device in this example may be the network device 700, which may execute the solution corresponding to the network device in FIG. 3 above.
  • the network device 700 may also be the network device 101 in FIG. 1 described above, or the network device 202, network device 203, and network device 204 in FIG. 2 described above.
  • the network device 700 includes:
  • the processing unit 701 is configured to configure indication information for each group.
  • the transceiver unit 702 is configured to send grouping information to a terminal device, the grouping information indicates the first identifier included in one or more groups, and the grouping information further includes indication information corresponding to each grouping.
  • the processing unit 701 is further configured to group multiple services.
  • the processing unit 701 is specifically configured to group multiple services according to the service characteristics and/or service types of the multiple services. That is, the network device can group multiple services according to service characteristics, group multiple services according to service types, or group multiple services according to service types and service characteristics.
  • the service characteristics include any one or a combination of any of service reliability requirements, service coverage capabilities, service delay requirements, service data volume, service mobility requirements, and service priorities; service types include eMBB, Any of URLLC, mMTC, V2X, IoT.
  • the first identifier is TMGI, G-RNTI, MCCH, or SC-MCCH.
  • the indication information may include the first type of parameters, or the indication information may include the second type of parameters, or the indication information may include the first type of parameters and the second type of parameters.
  • the first type of parameter is used to indicate feedback or no feedback
  • the second type of parameter is used to indicate the threshold of the feedback decision parameter
  • the threshold of the feedback decision parameter is used to: the terminal device determines that the value of the feedback decision parameter corresponding to the first data satisfies When the threshold of the feedback decision parameter is fed back, the feedback information is sent to the network device; or, when it is determined that the value of the feedback decision parameter corresponding to the first data does not meet the threshold of the feedback decision parameter, the feedback information is not sent to the network device.
  • the feedback decision parameter includes any one or a combination of any one of distance, RSRP, and SINR.
  • the transceiver unit 702 is specifically configured to send grouping information to the terminal device through high-level signaling; or, to send the grouping information to the terminal device through a system message.
  • processing unit 701 in the embodiment of the present application may be implemented by a processor or processor-related circuit components
  • transceiver unit 702 may be implemented by a transceiver or transceiver-related circuit components.
  • FIG. 8 shows a simplified structural diagram of the terminal device. It is easy to understand and easy to illustrate.
  • the terminal device is a mobile phone as an example.
  • the terminal device 800 includes a processor, a memory, a control circuit, and an antenna.
  • the processor is mainly used to process the communication protocol and communication data, and to control the entire terminal device, execute software programs, and process data of the software programs, for example, to support the terminal device 800 to execute any of the above-mentioned embodiments by the terminal device 800 Method of execution.
  • the memory is mainly used to store software programs and data.
  • the control circuit is mainly used for the conversion of baseband signals and radio frequency signals and the processing of radio frequency signals.
  • the control circuit and the antenna together can also be called a transceiver, which is mainly used to send and receive radio frequency signals in the form of electromagnetic waves.
  • the processor can read the software program in the storage unit, interpret and execute the instructions of the software program, and process the data of the software program.
  • the processor performs baseband processing on the data to be sent and outputs the baseband signal to the radio frequency circuit.
  • the radio frequency circuit performs radio frequency processing on the baseband signal and then sends the radio frequency signal to the outside in the form of electromagnetic waves through the antenna.
  • the radio frequency circuit receives the radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor, and the processor converts the baseband signal into data and processes the data .
  • Input and output devices such as touch screens, display screens, and keyboards, are mainly used to receive data input by users and output data to users. It should be noted that some types of terminal devices may not have input and output devices.
  • FIG. 8 only shows a memory and a processor. In actual terminal devices, there may be multiple processors and memories.
  • the memory may also be called a storage medium or a storage device, etc., which is not limited in this application.
  • the processor may include a baseband processor and a central processing unit.
  • the baseband processor is mainly used to process communication protocols and communication data
  • the central processing unit is mainly used to control the entire terminal device 800. Execute the software program and process the data of the software program.
  • the processor in FIG. 8 integrates the functions of the baseband processor and the central processing unit.
  • the baseband processor and the central processing unit may also be independent processors, which are interconnected by technologies such as buses.
  • the terminal device may include multiple baseband processors to adapt to different network standards
  • the terminal device 800 may include multiple central processors to enhance its processing capabilities, and the various components of the terminal device 800 may be connected through various buses.
  • the baseband processor can also be expressed as a baseband processing circuit or a baseband processing chip.
  • the central processing unit can also be expressed as a central processing circuit or a central processing chip.
  • the function of processing the communication protocol and communication data can be built in the processor, or can be stored in the storage unit in the form of a software program, and the processor executes the software program to realize the baseband processing function.
  • the antenna and control circuit with the transceiver function can be regarded as the transceiver unit of the terminal device
  • the processor with the processing function can be regarded as the processing unit of the terminal device.
  • the terminal device includes a transceiver unit 802 and a processing unit 801.
  • the transceiver unit may also be called a transceiver, a transceiver, a transceiver, etc.
  • a processing unit may also be called a processor, a processing board, a processing unit, a processing device, and the like.
  • the device for implementing the receiving function in the transceiver unit can be regarded as the receiving unit, and the device for implementing the transmitting function in the transceiver unit can be regarded as the transmitting unit, that is, the transceiver unit includes the receiving unit and the transmitting unit.
  • the receiving unit may also be called a receiver, a receiver, a receiving circuit, etc.
  • the sending unit may be called a transmitter, a transmitter, or a transmitting circuit, etc.
  • the antenna On the downlink, the antenna receives the downlink signal (including data and/or control information) sent by the network device, and on the uplink, the antenna sends the uplink signal (including data) to the network device or other terminal equipment. And/or control information).
  • service data and signaling messages are processed. These units are based on the radio access technology adopted by the radio access network (for example, LTE, NR, and other evolved system access technologies) To process.
  • the processor is also used to control and manage the actions of the terminal device, and is used to execute the processing performed by the terminal device in the foregoing embodiment.
  • the processor is also used to support the terminal device to execute the execution method involving the terminal device in FIG. 8.
  • FIG. 8 only shows a simplified design of the terminal device.
  • the terminal device may include any number of antennas, memories, processors, etc., and all terminal devices that can implement this application are within the protection scope of this application.
  • transceiving unit 802 is used to perform the sending and receiving operations on the terminal device side in the method embodiment shown in FIG. 3, and the processing unit 801 is used to perform the terminal device side in the method embodiment shown in FIG. Operations other than operations.
  • the transceiving unit 802 is configured to perform the transceiving steps on the terminal device side in the embodiment shown in FIG. 3, such as step 302 and step 303.
  • the processing unit 801 is configured to perform other operations on the terminal device side in the embodiment shown in FIG. 3 except for the receiving and sending operations, such as step 304.
  • the chip When the communication device is a chip, the chip includes a transceiver unit and a processing unit.
  • the transceiver unit may be an input/output circuit or a communication interface;
  • the processing unit is a processor or microprocessor or integrated circuit integrated on the chip.
  • FIG. 9 exemplarily shows a schematic structural diagram of a network device provided by the present application.
  • the network device 900 includes one or more remote radio units (remote radio units). unit (RRU) 901 and one or more baseband units (BBU) 902.
  • the RRU 901 may be called a transceiver unit, a transceiver, a transceiver circuit, or a transceiver, etc., and it may include at least one antenna 9011 and a radio frequency unit 9012.
  • the RRU901 part is mainly used for the transceiver of radio frequency signals and the conversion of radio frequency signals and baseband signals.
  • the BBU902 part can be called a processing unit, processor, etc.
  • RRU901 and BBU902 can be physically set together; they can also be physically separated, that is, distributed network equipment.
  • the BBU902 can be composed of one or more single boards, and multiple single boards can jointly support a radio access network with a single access standard (such as an LTE network), or can support wireless access with different access standards. network.
  • the BBU 902 also includes a memory 9022 and a processor 9021.
  • the memory 9022 is used to store necessary instructions and data.
  • the processor 9021 is configured to control the network device to perform necessary actions, for example, to control the network device to execute the method executed by the network device in any of the foregoing embodiments.
  • the memory 9022 and the processor 9021 may serve one or more boards. In other words, the memory and the processor can be set separately on each board. It can also be that multiple boards share the same memory and processor. In addition, there are necessary circuits on each board.
  • the antenna 9011 receives the uplink signal (including data, etc.) sent by the communication device, and on the downlink, the antenna 9011 sends the downlink signal (including data and/or control information) to the communication device
  • the processor 9021 service data and signaling messages are processed, and these units perform processing according to the radio access technology adopted by the radio access network (for example, LTE, NR, and other access technologies of evolved systems).
  • the processor 9021 is also configured to control and manage the actions of the network device, and is configured to execute the processing performed by the network device in the foregoing embodiment.
  • the processor 9021 is also configured to support the network device to execute the method executed by the network device in FIG. 3.
  • FIG. 9 only shows a simplified design of the network device.
  • the network equipment can include any number of antennas, memories, processors, radio frequency units, RRUs, BBUs, etc., and all network equipment that can implement the application are within the protection scope of the application.
  • the processor 9021 in the network device 900 can be used to read computer instructions in the memory 9022 to execute the configuration for each group Indication information, the group includes the first identifier.
  • the transceiver is used to send grouping information to the terminal device, the grouping information indicates a first identifier included in one or more groups, and the grouping information also includes indication information corresponding to each grouping.
  • the processor 9021 may also implement any detailed functions of the network device in the method embodiment shown in FIG. 3, which will not be described in detail here, and may refer to the processing steps performed by the network device in the method embodiment shown in FIG.
  • the processor may independently implement the various methods in the foregoing embodiments, where the transceiver unit or the specific transceiver may also be one or more pins of the input and output of the processor.
  • processors mentioned in the embodiments of this application may also be other general-purpose processors, digital signal processors (digital signal processors, DSP), application specific integrated circuits (ASICs), and ready-made programmable gate arrays.
  • DSP digital signal processors
  • ASICs application specific integrated circuits
  • FPGA Field programmable gate array
  • the general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like.
  • the memory mentioned in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory can be read-only memory (ROM), programmable read-only memory (programmable ROM, PROM), erasable programmable read-only memory (erasable PROM, EPROM), and electronic Erase programmable read-only memory (electrically EPROM, EEPROM) or flash memory.
  • the volatile memory may be random access memory (RAM), which is used as an external cache.
  • RAM random access memory
  • static random access memory static random access memory
  • dynamic RAM dynamic random access memory
  • synchronous dynamic random access memory synchronous DRAM, SDRAM
  • double data rate synchronous dynamic random access memory double data rate SDRAM, DDR SDRAM
  • enhanced synchronous dynamic random access memory enhanced SDRAM, ESDRAM
  • synchronous connection dynamic random access memory serial DRAM, SLDRAM
  • direct rambus RAM direct rambus RAM, DR RAM
  • the processor is a general-purpose processor, DSP, ASIC, FPGA or other programmable logic device, discrete gate or transistor logic device, or discrete hardware component
  • the memory storage unit
  • the present application provides a communication system.
  • the communication system may include the aforementioned one or more terminal devices and one or more network devices.
  • the terminal device can execute any method on the terminal device side, and the network device can execute any method on the network device side.
  • the possible implementations of network equipment and terminal equipment can be found in the above introduction, which will not be repeated here.
  • At least one (item) refers to one or more, and “multiple” refers to two or more.
  • “And/or” is used to describe the association relationship of associated objects, indicating that there can be three types of relationships, for example, “A and/or B” can mean: only A, only B, and both A and B , Where A and B can be singular or plural.
  • the character “/” generally indicates that the associated objects are in an “or” relationship.
  • the following at least one item (a)” or similar expressions refers to any combination of these items, including any combination of a single item (a) or plural items (a).
  • At least one (a) of a, b or c can mean: a, b, c, "a and b", “a and c", “b and c", or "a and b and c" ", where a, b, and c can be single or multiple.
  • the above-mentioned embodiments it may be implemented in whole or in part by software, hardware, firmware or any combination thereof.
  • a software program it may be implemented in the form of a computer program product in whole or in part.
  • the computer program product includes one or more instructions.
  • the computer program instructions When the computer program instructions are loaded and executed on the computer, the processes or functions according to the embodiments of the present application are generated in whole or in part.
  • the computer can be a general-purpose computer, a dedicated computer, a computer network, or other programmable devices. Instructions can be stored in a computer storage medium, or transmitted from one computer storage medium to another computer storage medium.
  • the instructions can be sent from a website, computer, server, or data center through wired (such as coaxial cable, optical fiber, digital user DSL) or wireless (such as infrared, wireless, microwave, etc.) to another website, computer, server or data center.
  • a computer storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or data center integrated with one or more available media.
  • Usable media can be magnetic media (for example, floppy disks, hard drives, magnetic tapes, magneto-optical disks (MO), etc.), optical media (for example, CD, DVD, BD, HVD, etc.), or semiconductor media (for example, ROM, EPROM, EEPROM, etc.)
  • Non-volatile memory NAND FLASH
  • solid state disk Solid State Disk, SSD
  • the embodiments of the present application can be provided as methods, systems, or computer program products. Therefore, the embodiments of the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the embodiments of the present application may adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program codes.
  • computer-usable storage media including but not limited to disk storage, CD-ROM, optical storage, etc.
  • These instructions can also be stored in a computer-readable memory that can guide a computer or other programmable data processing equipment to work in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture including the instruction device, and the instruction device implements A function specified in a flow or multiple flows in a flowchart and/or a block or multiple blocks in a block diagram.
  • These instructions can also be loaded on a computer or other programmable data processing equipment, so that a series of operation steps are executed on the computer or other programmable equipment to produce computer-implemented processing, so that the instructions executed on the computer or other programmable equipment provide Steps used to implement the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne un procédé et un appareil de communication, ainsi qu'un support de stockage. Le procédé comprend les étapes consistant à : recevoir des informations de groupes provenant d'un dispositif de réseau et recevoir des premières données provenant du dispositif de réseau ; puis déterminer un premier groupe dont les premières données font partie et, en fonction des informations d'indication correspondant au premier groupe, déterminer si des informations de rétroaction doivent être envoyées au dispositif de réseau, les informations de groupes indiquant un premier identifiant intégré à un ou plusieurs groupes, les informations de groupes contenant en outre des informations d'indication correspondant aux groupes et le premier groupe étant l'un desdits un ou plusieurs groupes. Après la réception de premières données faisant partie d'un groupe n'ayant pas à envoyer d'informations de rétroaction à un dispositif de réseau, que les premières données soient ou non analysées correctement, il n'est pas nécessaire d'envoyer des informations de rétroaction au dispositif de réseau, ce qui favorise la réduction du surdébit de rétroaction d'un système de communication.
PCT/CN2020/098189 2019-06-28 2020-06-24 Procédé et appareil de communication et support de stockage WO2020259611A1 (fr)

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