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WO2021031026A1 - 一种下行控制信息dci的传输方法及装置 - Google Patents

一种下行控制信息dci的传输方法及装置 Download PDF

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Publication number
WO2021031026A1
WO2021031026A1 PCT/CN2019/101202 CN2019101202W WO2021031026A1 WO 2021031026 A1 WO2021031026 A1 WO 2021031026A1 CN 2019101202 W CN2019101202 W CN 2019101202W WO 2021031026 A1 WO2021031026 A1 WO 2021031026A1
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WIPO (PCT)
Prior art keywords
dci
information
dci format
terminal device
activation period
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Application number
PCT/CN2019/101202
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English (en)
French (fr)
Inventor
侯海龙
李超君
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to CN201980098446.3A priority Critical patent/CN114128373A/zh
Priority to PCT/CN2019/101202 priority patent/WO2021031026A1/zh
Publication of WO2021031026A1 publication Critical patent/WO2021031026A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • This application relates to the field of wireless communication technologies, and in particular to a method and device for transmitting downlink control information DCI.
  • a wake-up signal (WUS) or energy-saving signal/channel may be introduced in the new radio (NR) system of the 5th generation (5G) mobile communication technology (5G).
  • power saving signal/channel WUS can be combined with the discontinuous reception (DRX) mechanism in the radio resource control (radio resource control, RRC) connection state.
  • DRX discontinuous reception
  • RRC radio resource control
  • WUS can also be designed as a PDCCH for a group of terminal devices (UE group).
  • the network device can configure a group of terminal devices to detect the same Group PDCCH, and the Group PDCCH carries the Group DCI, which is used to indicate the corresponding energy saving information of each terminal device in the group (for example, whether to "wake up").
  • IoT Internet of Things
  • different types of terminal devices such as video surveillance cameras, industrial sensors, and so on.
  • These different types of terminals have different services and power characteristics, and can be configured with different power saving functions.
  • Different power saving functions mean that different length bits in the DCI are needed to indicate.
  • multiple power saving functions can be indicated in WUS, and the lengths of group DCI sent by network equipment to mMTC terminal equipment are all the same. If a certain type of terminal equipment is only configured with partial power saving functions, the DCI will be There will be more waste of resources.
  • the embodiments of the present application provide a method and device for transmitting downlink control information DCI, which are used to provide different DCI formats for different types of terminal devices, thereby enhancing the flexibility of energy-saving signal transmission and reducing resource loss.
  • an embodiment of the present application provides a DCI transmission method, which can be applied to a network device, and the method includes: the network device sends first DCI format information to a first terminal device, and the first DCI format information is included in The first DCI format set includes N pieces of DCI format information, and the N pieces of DCI format information respectively correspond to the data transmission functions of N different terminal devices, and N is a positive integer; the network device according to the first The DCI format information sends the first DCI to the first terminal device.
  • the network device can send the first DCI to the first terminal device according to the first DCI format information in the first DCI format set. Since the first DCI set may include one or more DCI format information, each DCI format information corresponds to a data transmission function of a terminal device. Therefore, when the network device sends the first DCI, it can be based on the data transmission function of the terminal device. For the data transmission function supported, the appropriate DCI format is selected for transmission, thereby effectively reducing the resource overhead in the DCI transmission process and improving the flexibility of energy-saving signal transmission.
  • the data transmission function includes one or more of the following: whether to wake up during the discontinuous reception DRX active period, and whether to configure the channel state before the DRX active period Information CSI measurement and reporting function, bandwidth part BWP switching scheme, configuration scheme of the number of receiving antennas in the DRX active period, cross-subframe scheduling scheme in the DRX active period, and physical downlink control channel skipping PDCCH skipping scheme in the DRX active period.
  • the first DCI includes M information blocks, and M is a positive integer;
  • the first DCI format information includes information indicating one or more of the following Indication information: the index of the information block corresponding to the first terminal device in the M information blocks; or, the length of the first DCI; or, the length of the information block.
  • the network device may also send to the first terminal device information indicating the first wireless network temporary identifier RNTI, where the first RNTI is used for the first terminal device Receive the first DCI, where the first RNTI corresponds to the first DCI format information. That is, different DCI formats can correspond to different RNTIs.
  • the time domain position at which the network device sends the first DCI is in the inactive period of the DRX, and the network device may also send to the first terminal device Information used to indicate the timing advance of the time domain position of the first DCI relative to the next DRX active period.
  • the network device may send one or more of the following information through a radio resource control RRC message: first DCI format information, information used to indicate the first RNTI , Information used to indicate the timing advance of the time domain position of the first DCI relative to the next DRX activation period. This facilitates the terminal device to receive the first DCI.
  • an embodiment of the present application provides a DCI transmission method, which can be applied to a terminal device.
  • the method includes: a first terminal device receives first DCI format information from a network device, and the first DCI format information is included in A first DCI format set, the first DCI format set includes N pieces of DCI format information, and the N pieces of DCI format information respectively correspond to the data transmission functions of N different terminal devices, where N is a positive integer; the first terminal device is based on The first DCI format information receives the first DCI from the network device.
  • the first terminal device may receive the first DCI sent by the network device according to the first DCI format information in the first DCI format set. Since the first DCI set may include one or more DCI format information, each DCI format information corresponds to a data transmission function of a terminal device. Therefore, when the network device sends the first DCI, it can be based on the data transmission function of the terminal device. For the data transmission function supported, the appropriate DCI format is selected for transmission, thereby effectively reducing the resource overhead in the DCI transmission process and improving the flexibility of energy-saving signal transmission.
  • the data transmission function includes one or more of the following: whether to wake up during the discontinuous reception DRX activation period, and whether to configure channel state information before the activation period CSI measurement and reporting function, bandwidth part BWP switching scheme, configuration scheme of the number of receiving antennas in the DRX active period, cross-subframe scheduling scheme in the DRX active period, and physical downlink control channel skipping PDCCH skipping scheme in the DRX active period.
  • the first DCI includes M information blocks, where M is a positive integer; the first DCI format information includes indication information for indicating one or more of the following : Index of the information block corresponding to the first terminal device in the M information blocks; or, the length of the first DCI; or, the length of the information block.
  • the second terminal device can determine its own corresponding information block from the M information blocks included in the first DCI according to the content indicated in the first DCI format information, thereby obtaining energy saving information.
  • the first terminal device may also receive from the network device information for indicating the first wireless network temporary identification RNTI, where the first RNTI and the first DCI format information Corresponding, that is, different DCI formats can correspond to different RNTIs; the first terminal device receives the first DCI according to the first RNTI.
  • the time domain position at which the first terminal device receives the first DCI is in the inactive period of DRX, and the first terminal device may also receive instructions from the network device for the first DCI The time-domain position of a DCI relative to the time advance information of the next DRX active period.
  • the first terminal device may also receive one or more of the following information through a radio resource control RRC message: first DCI format information, used to indicate the first RNTI information, information used to indicate the timing advance of the time domain position of the first DCI relative to the next DRX activation period. This facilitates the terminal device to receive the first DCI.
  • an embodiment of the present application provides a communication device that has the function of implementing the terminal device in the first aspect or any one of the possible designs of the first aspect.
  • the communication device may be a terminal device, such as a handheld device. Terminal equipment, vehicle-mounted terminal equipment, etc., may also be a device included in the terminal device, such as a chip, or a device including the terminal device.
  • the functions of the above-mentioned terminal device may be realized by hardware, or may be realized by hardware executing corresponding software.
  • the hardware or software includes one or more modules corresponding to the above-mentioned functions.
  • the communication device may also have the function of realizing the second aspect or the network device in any possible design of the second aspect.
  • the communication device may be a network device, such as a base station, or a device included in the network device, such as a chip.
  • the functions of the above-mentioned network equipment may be realized by hardware, or may be realized by hardware executing corresponding software.
  • the hardware or software includes one or more modules corresponding to the above-mentioned functions.
  • the structure of the communication device includes a processing module and a transceiver module, wherein the processing module is configured to support the communication device to perform the corresponding function in the first aspect or any one of the first aspects. , Or perform the corresponding function in the second aspect or any one of the second aspects mentioned above.
  • the transceiver module is used to support communication between the communication device and other communication devices. For example, when the communication device is a network device, it can send the first DCI format information to the first terminal device.
  • the communication device may also include a storage module, which is coupled with the processing module, which stores program instructions and data necessary for the communication device.
  • the processing module may be a processor
  • the communication module may be a transceiver
  • the storage module may be a memory.
  • the memory may be integrated with the processor or may be provided separately from the processor, which is not limited in this application.
  • the structure of the communication device includes a processor, and may also include a memory.
  • the processor is coupled with the memory and can be used to execute computer program instructions stored in the memory, so that the communication device executes the first aspect described above. Or any one of the possible design methods of the first aspect, or implement any one of the foregoing second aspect or the second aspect of the possible design methods.
  • the communication device further includes a communication interface, and the processor is coupled with the communication interface.
  • the communication interface may be a transceiver or an input/output interface; when the communication device is a chip included in the terminal device, the communication interface may be an input/output interface of the chip.
  • the transceiver may be a transceiver circuit, and the input/output interface may be an input/output circuit.
  • an embodiment of the present application provides a chip system, including: a processor, the processor is coupled with a memory, the memory is used to store a program or an instruction, when the program or an instruction is executed by the processor , So that the chip system implements any possible design method of the foregoing first aspect, or implements any possible design method of the foregoing second aspect.
  • the chip system further includes an interface circuit.
  • the interface circuit is used to receive code instructions and transmit them to the processor.
  • processors in the chip system there may be one or more processors in the chip system.
  • the processor can be implemented by hardware or software.
  • the processor may be a logic circuit, an integrated circuit, or the like.
  • the processor can be a general-purpose processor, implemented by reading software codes stored in the memory.
  • the memory may be integrated with the processor, or may be provided separately from the processor, which is not limited in this application.
  • the memory may be a non-transitory processor, such as a read-only memory ROM, which may be integrated with the processor on the same chip, or may be set on different chips.
  • the setting method of the processor is not specifically limited.
  • an embodiment of the present application provides a computer-readable storage medium, which stores computer-readable instructions.
  • the computer reads and executes the computer-readable instructions, the computer is caused to execute the first
  • the method in any possible design of the aspect, or the method in any possible design of the second aspect described above.
  • the embodiments of the present application provide a computer program product.
  • the computer reads and executes the computer program product, the computer executes any of the possible design methods in the first aspect, or executes the first Any of the two possible design methods.
  • an embodiment of the present application provides a communication system, which includes the network device and at least one terminal device described in the foregoing aspects.
  • FIG. 1 is a schematic diagram of a network architecture of a communication system to which an embodiment of this application is applicable;
  • FIG. 2 is a schematic flowchart of a DCI transmission method provided by an embodiment of the application
  • FIG. 3 is a schematic diagram of a DCI format provided by an embodiment of this application.
  • FIG. 4 is a schematic diagram of another process of a DCI transmission method provided by an embodiment of the application.
  • FIG. 5 is a schematic diagram of multiple DCI formats in the first DCI format set provided by an embodiment of the application
  • FIG. 6 is a schematic structural diagram of a communication device provided by an embodiment of this application.
  • FIG. 7 is another schematic structural diagram of a communication device provided by an embodiment of the application.
  • FIG. 8 is a schematic structural diagram of another communication device provided by an embodiment of this application.
  • FIG. 9 is a schematic diagram of another structure of another communication device provided by an embodiment of this application.
  • GSM global system for mobile communications
  • CDMA code division multiple access
  • WCDMA broadband code division multiple access
  • GPRS general packet radio service
  • LTE long term evolution
  • LTE frequency division duplex FDD
  • TDD LTE Time division duplex
  • UMTS universal mobile telecommunication system
  • WIMAX worldwide interoperability for microwave access
  • 5G fifth generation
  • NR new radio
  • FIG. 1 is a schematic diagram of a network architecture of a communication system to which an embodiment of this application is applicable.
  • the communication system includes a network device 110, a terminal device 101, a terminal device 102, a terminal device 103, a terminal device 104, a terminal device 105, and a terminal device 106.
  • the network device can communicate with at least one terminal device (such as the terminal device 101) through uplink (UL) and downlink (DL).
  • UL uplink
  • DL downlink
  • the network device in FIG. 1 may be an access network device, such as a base station.
  • the access network device in different systems corresponding to different devices for example, in the fourth generation mobile communication technology (the 4 th generation, 4G) system, the eNB may correspond, a corresponding access network device 5G 5G in the system, For example, gNB.
  • the technical solutions provided by the embodiments of the present application can also be applied to future mobile communication systems, so the network equipment in FIG. 1 can also correspond to the access network equipment in the future mobile communication system.
  • each network device may provide services for multiple terminal devices.
  • the embodiment of the present application does not limit the number of network devices and terminal devices in the communication system.
  • the network device in FIG. 1 and each of the terminal devices or all of the terminal devices among multiple terminal devices can implement the technical solutions provided in the embodiments of the present application.
  • the terminal devices in FIG. 1 may be different types of terminal devices, for example, they may include mMTC terminal devices such as mobile phones, smart water meters in the Internet of Things, and electricity meters.
  • mMTC terminal devices such as mobile phones, smart water meters in the Internet of Things, and electricity meters.
  • the various types of terminal devices shown in FIG. are some examples, and it should be understood that the terminal device in the embodiment of the present application is not limited to this.
  • Terminal equipment also known as user equipment (UE), mobile station (MS), mobile terminal (MT), etc.
  • UE user equipment
  • MS mobile station
  • MT mobile terminal
  • the terminal device may 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 device may be a handheld device with a wireless connection function, a vehicle-mounted device, a vehicle user device, and so on.
  • terminal devices are: mobile phones (mobile phones), tablets, laptops, palmtop computers, mobile internet devices (MID), wearable devices, virtual reality (VR) devices, augmented Augmented reality (AR) equipment, wireless terminals in industrial control (industrial control), wireless terminals in self-driving (self-driving), wireless terminals in remote medical surgery, and smart grid (smart grid)
  • 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.
  • the terminal device in the embodiments of the present application may also be a vehicle-mounted module, vehicle-mounted module, vehicle-mounted component, vehicle-mounted chip, or vehicle-mounted unit that is built into a vehicle as one or more components or units.
  • Modules, on-board components, on-board chips or on-board units can implement the method of the present application.
  • Network equipment is the equipment used in the network to connect terminal equipment to the wireless network.
  • the network device may be a node in a radio access network, may also be called a base station, or may also be called a radio access network (RAN) node (or device).
  • the network device can be used to convert received air frames and Internet Protocol (IP) packets into each other, and act 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 network equipment can also coordinate the attribute management of the air interface.
  • the network equipment may include an evolved base station (NodeB or eNB or e-NodeB, evolutional Node B) in a long term evolution (LTE) system or an evolved LTE system (LTE-Advanced, LTE-A), such as
  • LTE long term evolution
  • LTE-A evolved LTE system
  • the traditional macro base station eNB and the micro base station eNB in the heterogeneous network scenario may also include the next generation node B (next generation) in the fifth generation mobile communication technology (5th generation, 5G) new radio (NR) system.
  • 5th generation, 5G fifth generation mobile communication technology
  • NR new radio
  • node B node B, gNB
  • TRP transmission reception point
  • home base station for example, home evolved NodeB, or home Node B, HNB
  • baseband unit BBU
  • baseband pool BBU pool or WiFi access point (access point, AP), etc.
  • CU centralized unit
  • CU distributed unit
  • DU cloud radio access network
  • a network device in a V2X technology is a roadside unit (RSU).
  • the RSU may be a fixed infrastructure entity that supports V2X applications, and can exchange messages with other entities that support V2X applications.
  • Downlink control channel such as PDCCH, or enhanced physical downlink control channel (EPDCCH), or may also include other downlink control channels. There are no specific restrictions.
  • the terms “system” and “network” in the embodiments of this application can be used interchangeably.
  • “Multiple” refers to two or more. In view of this, “multiple” may also be understood as “at least two” in the embodiments of the present application.
  • “At least one” can be understood as one or more, for example, one, two or more. For example, including at least one means including one, two or more, and it does not limit which ones are included. For example, if at least one of A, B, and C is included, then A, B, C, A and B, A and C, B and C, or A and B and C are included. In the same way, the understanding of "at least one" and other descriptions is similar.
  • FIG. 2 is a schematic flowchart of a method for transmitting downlink control information DCI according to an embodiment of this application.
  • the method specifically includes the following steps S201 to S204.
  • Step S201 The network device sends first DCI format information to the first terminal device, where the first DCI format information is used to indicate the first DCI format.
  • a DCI may include multiple information blocks with the same length, and each information block contains energy saving information of a corresponding terminal device.
  • the last information block in the information block stores a radio network temporary indication (RNTI) that scrambles the DCI.
  • RNTI can be used to indicate the PDCCH group where the terminal device is located, so that the terminal device can recognize and receive the DCI.
  • the RNTI may be, for example, power saving (PS)-RNTI.
  • PS power saving
  • the terminal devices corresponding to multiple information blocks in a DCI can be different. In this way, multiple terminal devices can multiplex the same DCI to obtain energy-saving information, thereby helping to reduce resource consumption on the network side and improve energy-saving signals. s efficiency. Further, for each information block in the multiple information blocks, the terminal device corresponding to the information block may also be one or more, that is, multiple terminal devices may also multiplex one information block in the DCI to indicate These terminal devices have the same energy saving information.
  • Step S202 The first terminal device receives the first DCI format information from the network device.
  • Step S203 The network device sends the first DCI to the first terminal device according to the first DCI format information.
  • the network device sending the first DCI to the first terminal device according to the first DCI format information may be that the network device sends the first DCI to the first terminal device in the first DCI format indicated by the first DCI format information. Since the first DCI sent by the network device adopts the first DCI format, in step S201, the network device needs to send first DCI format information indicating the first DCI format to the first terminal device so that the terminal device can follow the The first DCI format acquires energy saving information. It can be understood that the network device may send the first DCI format information to the first terminal device before sending the first DCI.
  • the first DCI format information may include information used to indicate that the information blocks corresponding to the first terminal device are in M information blocks. Information about one or more of the index in the information block, the length of the first DCI, and the length of each information block in the M information blocks.
  • the DCI may be a group DCI. Therefore, the network device sending the first DCI to the first terminal device according to the first DCI format information may also be that the network device may send the first DCI to a group of terminal devices, and the first terminal device is one of the group of terminal devices.
  • Step S204 The first terminal device receives the first DCI from the network device according to the first DCI format information.
  • the first terminal device may use the length of the first DCI indicated in the first DCI indication information, the length of each information block in the first DCI, and the number of information blocks included in the first DCI M , The index in the M information blocks of the information block corresponding to the first terminal device determines the information block corresponding to the first terminal device, and then obtains energy saving information from the information block.
  • the network device may also send information for indicating the first RNTI to the first terminal device.
  • the network device When the network device sends the first DCI, it will use the first RNTI to scramble the first DCI.
  • the first RNTI corresponds to the first DCI format adopted by the first DCI, and can be used by the first terminal device to identify the PDCCH group in which it is located. That is, the first terminal device may detect the DCI according to the first RNTI, and determine whether there is an information block containing its own energy saving information in a certain DCI according to whether the first RNTI can descramble the DCI.
  • the first RNTI may be PS-RNTI.
  • the network device can specifically send the first DCI through the PDCCH channel, and the time domain position for the network device to send the first DCI can be in the active period of DRX or in the inactive period of DRX. If the time domain position of sending the first DCI is in During the inactive period of DRX, the network device may further send to the first terminal device information indicating the timing advance of the time domain position of the first DCI relative to the next DRX active period.
  • the network device may send the above information including the first DCI format information, the information used to indicate the first RNTI, and the time domain position of the first DCI relative to the next DRX activation to the first terminal device through an RRC message.
  • the information may be included in the same RRC message and sent to the first terminal device, or may be included in different RRC messages and sent to the first terminal device, which is not limited in this application.
  • the network device may send an RRC message to the first terminal device.
  • the RRC message includes the first DCI format information and is used to indicate the first DCI format.
  • the first DCI format information is included in the first DCI format set.
  • the first DCI format set includes N pieces of DCI format information.
  • the N pieces of DCI format information are different from each other. They are used to indicate different DCI formats and correspond to the data transmission functions of N different terminal devices. N is a positive integer.
  • the first DCI format information refers to one of the N DCI format information.
  • the DCI format information is used to indicate the DCI format, the N pieces of DCI format information are different from each other, which means that the DCI formats indicated by the N pieces of DCI format information are different.
  • Each DCI format can be used to support a data transmission function of a terminal device, and different DCI formats support different data transmission functions of the terminal device.
  • the different DCI formats may include, the length of the DCI, the length of each information block in the DCI, the type of energy saving information included in each information block in the DCI, the RNTI used to scramble the DCI, and the supported data transmission function One or more of the items are different. In other words, if the two DCI formats are in the length of DCI, the length of each information block in DCI, the type of energy saving information included in each information block in DCI, the RNTI used to scramble the DCI, and the supported data If there is at least one difference in transmission function, etc., it can be considered that the two DCI formats are different DCI formats.
  • CSI channel state information
  • BWP bandwidth part
  • the data transmission function of the terminal device can also be understood as a combination of power saving solutions adopted by the terminal device.
  • whether to wake up during the non-continuous reception DRX activation period can be understood as a wake-up function of the terminal device.
  • wake up is the basic function of WUS, and all types of terminals should support it.
  • WUS is generally sent at a certain moment before the DRX activation period, that is, WUS is sent during the DRX inactive period, and is used to indicate whether the terminal device wakes up in the subsequent DRX activation period to monitor PDCCH and other service behaviors.
  • the wake-up function can displayly indicate whether the terminal device activates and monitors the PDCCH during the activation period or enters the sleep state through the 1-bit information in the DCI. For example, when the value of this bit is "1", it indicates that PDCCH monitoring is activated, and the value of this bit is "0", which indicates that it enters the sleep state.
  • the channel state information CSI measurement and reporting function is configured before the DRX activation period can be understood as the CSI measurement and reporting of the terminal device. Since the terminal device sleeps for a long time before entering the active period, the terminal device does not perform CSI measurement during the sleep period. CSI measurement uses include channel quality measurement, beam management, channel phase tracking, etc. For some mobile terminal devices, after a long period of sleep, network devices and terminal devices may have inaccurate estimates of the current channel quality and beam mismatch. Therefore, they can instruct such terminal devices when waking up. Perform CSI measurement and report. The terminal device can be notified through the 1-bit information display in the DCI.
  • the CSI measurement and reporting function is an optional configuration for the terminal equipment. The CSI measurement and reporting function can be configured for some terminal equipment, and only the terminal equipment configured with this function has the indication information of the function in the DCI.
  • BWP switch is the BWP switch function.
  • BWP is the bandwidth resource for the terminal device to work.
  • Each terminal device can be configured with up to 4 BWPs. Only one BWP is activated at a time. The terminal device performs service transmission and RRM measurement on the activated BWP, and selects the appropriate size according to the data to be transmitted The BWP is used to reduce power consumption. For different business models, the arrival time and size of data packets are different, so for a certain activation moment, the current amount of data to be transmitted is different, so when the terminal device is instructed to wake up, the currently activated BWP can be adjusted at the same time, and the BWP switch can be performed . This function is more effective for burst service models.
  • the 2-bit information in the DCI can be used to indicate switching among the configured 4 BWPs. For terminal equipment with a relatively stable service cycle, the BWP switching function may not be included.
  • BWP The switching function is an optional configuration for the terminal device.
  • FIG. 5 exemplarily shows multiple pieces of DCI format information in the first DCI format set provided by an embodiment of the present application.
  • the first DCI format set includes 4 pieces of DCI format information, where DCI format 1 Supported data transmission functions include wake-up, DCI format 2 supports data transmission functions including wake-up and CSI measurement and reporting, DCI format 3 supports data transmission functions including wake-up and BWP switching, and DCI format 4 supports data transmission functions including wake-up and BWP Handover and CSI measurement and reporting.
  • DCI format 1 Supported data transmission functions include wake-up
  • DCI format 2 supports data transmission functions including wake-up and CSI measurement and reporting
  • DCI format 3 supports data transmission functions including wake-up and BWP switching
  • DCI format 4 supports data transmission functions including wake-up and BWP Handover and CSI measurement and reporting.
  • the amount of DCI format information shown in FIG. 5 is only an example, and this application does not specifically limit the amount of DCI format information in the first DCI format set, and can be set by
  • DCI formats shown in FIG. 4 in 5 DCI having different lengths, i.e. L max1, L max2, L max3 and L max4 5 shown in FIG.
  • the length of the information block in different DCI formats is also different.
  • the more power saving schemes included in the data transmission function the larger the length of the information block.
  • the four DCI formats can also be scrambled using dedicated RNTI corresponding to the DCI format.
  • the length of the DCI indicated by the N pieces of DCI format information in the first DCI format set may be the same, or the DCI length indicated by each type of DCI format information may also be configured separately, and the configured DCI length may be the same or different . Since the length of the information block is different in different DCI formats, if the length of the DCI of the N DCI formats is the same, it means that the number of terminal devices that can be accommodated in different DCI is different. The smaller the length of the information block, then More terminal equipment can be reused. However, it should also be understood that this application does not limit the length of information blocks of different DCI formats to be different. In scenarios where the data transmission functions supported by them are different, the length of information blocks in different DCI formats may also be the same.
  • the length of the DCI of the four DCI formats is 24 bits. If there are 50 terminal devices, namely terminal device ⁇ terminal device 49, divided into four groups according to the service and power characteristics of the terminal device.
  • the first group adopts DCI format 1, including terminal device 0 to terminal device 23, PS-RNTI (power saving-RNTI) is configured as OXAAAA; the second group adopts DCI format 2, including terminal equipment 24 to terminal equipment 35, and PS-RNTI is configured as OXBBBB; the third group adopts DCI format 3, including terminal equipment 36 to terminal equipment 43 , PS-RNTI is configured as OXCCCC; the fourth group adopts DCI format 4, including terminal equipment 44 to terminal equipment 49, and PS-RNTI is configured as OXDDDD.
  • PS-RNTI power saving-RNTI
  • the DCI format used by the four terminal equipment groups can be shown in Table 1. Taking the group of UE0 to UE23 as an example, the network equipment can be configured for UE0 to UE23 through RRC signaling:
  • DCI pattern pattern1-wake up
  • Block index Value range [0, 23];
  • DCI length 24bit
  • PS-RANTI OXAAAA;
  • the network device indicates whether the corresponding terminal device is to wake up in the corresponding block index in the DCI according to the high-level configuration, and scrambles the CRC check bit of the DCI with PS-RANTI OXAAAA.
  • the terminal device monitors the PDCCH scrambled with PS-RNTI OXAAAA. If it successfully detects the PDCCH grouped by the terminal device, it reads the wake-up indication in the block index according to the configuration. If it is instructed to wake up, it wakes up in the subsequent DRX activation period and monitor PDCCH; if it is instructed not to wake up, it will not wake up in the subsequent DRX activation period and continue to enter the DRX off state.
  • FIG. 6 is a schematic structural diagram of a communication device provided by an embodiment of the application.
  • the communication device 600 includes a transceiver module 610 and a processing module 620.
  • the communication device can be used to implement the functions related to network equipment in any of the foregoing method embodiments.
  • the communication device may be a network device or a chip included in the network device.
  • the transceiver module 610 is configured to send first DCI format information to the first terminal device, and the first DCI format information is included in the first DCI format
  • the first DCI format set includes N pieces of DCI format information, and the N pieces of DCI format information respectively correspond to the data transmission functions of N different terminal devices, and the N is a positive integer;
  • the processing module 620 is configured to A piece of DCI format information sends the first DCI to the first terminal device through the transceiver module 610.
  • the data transmission function includes one or more of the following:
  • the physical downlink control channel in the DRX activation period skips the PDCCH skipping solution.
  • the first DCI includes M information blocks, where M is a positive integer; the first DCI format information includes indication information used to indicate one or more of the following: The index of the information block in the M information blocks; or, the length of the first DCI; or, the length of the information block.
  • the transceiver module 610 is further configured to send information indicating the first wireless network temporary identifier RNTI to the first terminal device.
  • the first RNTI is used by the first terminal device to receive the first DCI.
  • An RNTI corresponds to the first DCI format information.
  • the time domain position at which the transceiver module 610 sends the first DCI is in the inactive period of DRX, and the transceiver module 610 is further configured to: send to the first terminal device the time domain indicating the first DCI Information about the timing advance of the position relative to the next DRX activation period.
  • the transceiver module 610 is further configured to send one or more of the following information through a radio resource control RRC message: first DCI format information, information used to indicate the first RNTI, The time-domain position of the DCI relative to the time advance information of the next DRX active period.
  • processing module 620 involved in the communication device may be implemented by a processor or processor-related circuit components
  • transceiver module 610 may be implemented by a transceiver or transceiver-related circuit components.
  • the operation and/or function of each module in the communication device is to realize the corresponding process of the method shown in Fig. 3 or Fig. 4, and is not repeated here for brevity.
  • FIG. 7 is a schematic diagram of another structure of a communication device provided in an embodiment of this application.
  • the communication device may specifically be a type of network equipment, such as a base station, for implementing the functions of the network equipment in any of the foregoing method embodiments.
  • the network equipment includes: one or more radio frequency units, such as remote radio unit (RRU) 701 and one or more baseband units (BBU) (also called digital unit, digital unit, DU) )702.
  • the RRU 701 may be called a transceiver unit, a transceiver, a transceiver circuit, or a transceiver, etc., and it may include at least one antenna 7011 and a radio frequency unit 7012.
  • the RRU 701 part is mainly used for receiving and sending radio frequency signals and converting radio frequency signals and baseband signals.
  • the part 702 of the BBU is mainly used to perform baseband processing and control the base station.
  • the RRU 701 and the BBU 702 may be physically set together, or may be physically separated, that is, a distributed base station.
  • the BBU 702 is the control center of the base station, which may also be called a processing unit, and is mainly used to complete baseband processing functions, such as channel coding, multiplexing, modulation, and spreading.
  • the BBU (processing unit) 702 may be used to control the base station to execute the operation procedure of the network device in the foregoing method embodiment.
  • the BBU 702 may be composed of one or more single boards, and multiple single boards may jointly support a radio access network with a single access indication (such as an LTE network), or support different access standards. Wireless access network (such as LTE network, 5G network or other networks).
  • the BBU 702 may also include a memory 7021 and a processor 7022, and the memory 7021 is used to store necessary instructions and data.
  • the processor 7022 is used to control the base station to perform necessary actions, for example, to control the base station to perform the sending operation in the foregoing method embodiment.
  • the memory 7021 and the processor 7022 may serve one or more single 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, necessary circuits can be provided on each board.
  • the embodiment of the present application also provides another communication device.
  • FIG. 8 is a schematic structural diagram of another communication device provided by an embodiment of the present application.
  • the communication device 800 includes a transceiver module 810 and a processing module 820.
  • the communication device can be used to implement the functions related to terminal equipment in any of the foregoing method embodiments.
  • the communication device may be a terminal device, such as a handheld terminal device or a vehicle-mounted terminal device; the communication device may also be a chip included in the terminal device, or a device including the terminal device, such as various types of vehicles.
  • the transceiver module 810 is configured to receive first DCI format information from a network device, and the first DCI format information is included in the first DCI format set.
  • the first DCI format set includes N pieces of DCI format information, and the N pieces of DCI format information respectively correspond to the data transmission functions of N different terminal devices, and the N is a positive integer;
  • the processing module 820 is configured to follow the first DCI format The information receives the first DCI from the network device.
  • the data transmission function includes one or more of the following:
  • the first DCI includes M information blocks, where M is a positive integer; the first DCI format information includes indication information used to indicate one or more of the following: The index of the information block in the M information blocks; or, the length of the first DCI; or, the length of the information block.
  • the transceiver module 810 is further configured to receive information indicating the first wireless network temporary identifier RNTI from the network device, where the first RNTI corresponds to the first DCI format information; and according to the first RNTI, receive The first DCI.
  • the time domain position for receiving the first DCI is in the inactive period of the DRX, and the transceiver module 810 is further configured to receive from the network device indicating that the time domain position of the first DCI is relative to the next DRX. Time advance information of the activation period.
  • the transceiver module 810 is further configured to receive one or more of the following information through a radio resource control RRC message: first DCI format information, information used to indicate the first RNTI, The time-domain position of the DCI relative to the time advance information of the next DRX active period.
  • the processing module 820 involved in the communication device may be implemented by a processor or processor-related circuit components, and the transceiver module 810 may be implemented by a transceiver or transceiver-related circuit components.
  • the operations and/or functions of each module in the communication device are used to implement the corresponding process of the method shown in FIG. 3 or FIG. 4, and are not repeated here for brevity.
  • FIG. 9 is a schematic diagram of another structure of a communication device provided in an embodiment of the application.
  • the communication device may specifically be a terminal device. It is easy to understand and easy to illustrate.
  • the terminal device uses a mobile phone as an example.
  • the terminal device includes a processor, and may also include a memory. Of course, it may also include a radio frequency circuit, an antenna, and an input/output device.
  • the processor is mainly used to process the communication protocol and communication data, and to control the terminal device, execute the software program, and process the data of the software program.
  • the memory is mainly used to store software programs and data.
  • the radio frequency circuit is mainly used for the conversion of baseband signal and radio frequency signal and the processing of radio frequency signal.
  • the antenna is mainly used to send and receive radio frequency signals in the form of electromagnetic waves.
  • 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.
  • the processor When data needs to be sent, 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 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.
  • only one memory and processor are shown in FIG. 9. In actual terminal equipment products, there may be one or more processors and one or more memories.
  • the memory may also be referred to as a storage medium or storage device.
  • the memory may be set independently of the processor, or may be integrated with the processor, which is not limited in the embodiment of the present application.
  • the antenna and radio frequency circuit with the transceiving function can be regarded as the transceiving 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 910 and a processing unit 920.
  • the transceiver unit may also be referred to as a transceiver, a transceiver, a transceiver, and so on.
  • the processing unit may also be called a processor, a processing board, a processing module, a processing device, and so on.
  • the device for implementing the receiving function in the transceiver unit 910 can be regarded as the receiving unit, and the device for implementing the sending function in the transceiver unit 910 can be regarded as the sending unit, that is, the transceiver unit 910 includes a receiving unit and a sending unit.
  • the transceiver unit may sometimes be called a transceiver, a transceiver, or a transceiver circuit.
  • the receiving unit may sometimes be called a receiver, receiver, or receiving circuit.
  • the transmitting unit may sometimes be called a transmitter, a transmitter, or a transmitting circuit.
  • transceiving unit 910 is configured to perform sending and receiving operations on the terminal device side in the foregoing method embodiment
  • processing unit 920 is configured to perform other operations on the terminal device in the foregoing method embodiment except for the transceiving operation.
  • An embodiment of the present application also provides a chip system, including: a processor, the processor is coupled with a memory, the memory is used to store a program or instruction, when the program or instruction is executed by the processor, the The chip system implements the method in any of the foregoing method embodiments.
  • processors in the chip system there may be one or more processors in the chip system.
  • the processor can be implemented by hardware or software.
  • the processor may be a logic circuit, an integrated circuit, or the like.
  • the processor may be a general-purpose processor, which is implemented by reading software codes stored in the memory.
  • the memory may be integrated with the processor, or may be provided separately from the processor, which is not limited in this application.
  • the memory may be a non-transitory processor, such as a read-only memory ROM, which may be integrated with the processor on the same chip, or may be set on different chips.
  • the setting method of the processor is not specifically limited.
  • the chip system may be a field programmable gate array (FPGA), an application specific integrated circuit (ASIC), or a system on chip (SoC). It can also be a central processor unit (CPU), a network processor (NP), a digital signal processing circuit (digital signal processor, DSP), or a microcontroller (microcontroller).
  • the controller unit, MCU may also be a programmable controller (programmable logic device, PLD) or other integrated chips.
  • each step in the foregoing method embodiments may be completed by an integrated logic circuit of hardware in a processor or instructions in the form of software.
  • the steps of the method disclosed in the embodiments of the present application may be directly embodied as being executed by a hardware processor, or executed by a combination of hardware and software modules in the processor.
  • the embodiment of the present application also provides a computer-readable storage medium, which stores computer-readable instructions, and when the computer reads and executes the computer-readable instructions, the computer is caused to execute any of the foregoing method embodiments Method in.
  • the embodiments of the present application also provide a computer program product.
  • the computer reads and executes the computer program product, the computer is caused to execute the method in any of the foregoing method embodiments.
  • the embodiments of the present application also provide a communication system, which includes a network device and at least one terminal device described in each of the foregoing method embodiments.
  • processors mentioned in the embodiments of this application may be a central processing unit (CPU), or may be other general-purpose processors, digital signal processors (DSP), or application specific integrated circuits ( application specific integrated circuit (ASIC), ready-made programmable gate array (field programmable gate array, FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc.
  • 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 module
  • the size of the sequence numbers of the above-mentioned processes does not mean the order of execution.
  • the execution order of the processes should be determined by their functions and internal logic, and should not be used in the embodiments of the present invention.
  • the implementation process constitutes any limitation.
  • the disclosed system, device, and method may be implemented in other ways.
  • the device embodiments described above are only illustrative.
  • the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components can be combined or It can be integrated into another system, or some features can be ignored or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.
  • each unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.
  • the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium.
  • the technical solution of this application essentially or the part that contributes to the existing technology or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the method described in each embodiment of the present application.
  • the aforementioned storage media include: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk and other media that can store program code .

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Abstract

一种下行控制信息DCI的传输方法及装置，其中方法包括：网络设备可根据第一DCI格式集合中的第一DCI格式信息，向第一终端设备发送第一DCI，该第一DCI格式集合包括N个DCI格式信息，该N个DCI格式信息分别对应N个不同的终端设备的数据传输功能。由于第一DCI集合中可包括一个或多个DCI格式信息，每个DCI格式信息又与一种终端设备的数据传输功能相对应，因此，网络设备在发送第一DCI时，可根据终端设备所支持的数据传输功能，选择合适的DCI格式进行发送，从而有效减小DCI发送过程中的资源开销，提高节能信号发送的灵活性。

Description

一种下行控制信息DCI的传输方法及装置 技术领域
本申请涉及无线通信技术领域，特别涉及一种下行控制信息DCI的传输方法及装置。
背景技术
为了减小终端设备的功耗，在第五代移动通信技术(5th generation，5G)新空口(new radio，NR)系统中可能会引入唤醒信号(wake up signal，WUS)或节能信号/信道(power saving signal/channel)，WUS可以与无线资源控制(radio resource control，RRC)连接态下的非连续接收(discontinuous reception，DRX)机制相结合。对于支持WUS的终端设备，在每一个DRX周期，网络设备可以在终端设备的非激活时间内或激活时间以外发送WUS。
对于WUS的设计，一种可能的方案是复用现有的NR中物理下行控制信道(physical downlink control channel，PDCCH)的设计，即，将WUS设计成下行控制信道，例如PDCCH，终端设备通过检测相应的PDCCH就可以确定是否“唤醒”。考虑到网络侧的资源消耗，WUS也可以被设计为针对一组终端设备(UE group)的PDCCH。网络设备可以为一组终端设备配置检测同一个Group PDCCH，该Group PDCCH上承载了Group DCI，用于指示该组中每个终端设备的相应的节能信息(例如是否“唤醒”)。
在物联网(internet of things，IoT)场景中，存在不同类型的定制终端设备，例如视频监控的摄像头、工业传感器等。这些不同类型的终端有不同的业务和功率特征，可以被配置不同的功率节省功能。不同的功率节省功能意味着需要DCI中不同长度的比特来指示。现有技术中，WUS中可指示多种功率节省功能，并且网络设备向mMTC类的终端设备发送的group DCI的长度均相同，如果某类终端设备仅配置部分功率节省功能，则会使得DCI中会存在较多资源浪费。
发明内容
本申请实施例提供一种下行控制信息DCI的传输方法及装置，用以针对不同类型的终端设备提供不同的DCI格式，从而增强节能信号发送的灵活性，减小资源损耗。
第一方面，本申请实施例提供一种DCI的传输方法，该方法可应用于网络设备，该方法包括：网络设备向第一终端设备发送第一DCI格式信息，该第一DCI格式信息包含于第一DCI格式集合，该第一DCI格式集合包括N个DCI格式信息，所述N个DCI格式信息分别对应N个不同的终端设备的数据传输功能，N为正整数；网络设备根据该第一DCI格式信息向所述第一终端设备发送第一DCI。
采用本申请提供的技术方案，网络设备可根据第一DCI格式集合中的第一DCI格式信息，向第一终端设备发送第一DCI。由于第一DCI集合中可包括一个或多个DCI格式信息，每个DCI格式信息又与一种终端设备的数据传输功能相对应，因此，网络设备在发送第一DCI时，可根据终端设备所支持的数据传输功能，选择合适的DCI格式进行发送，从而有效减小DCI发送过程中的资源开销，提高节能信号发送的灵活性。
结合第一方面，在第一方面的一种可能的设计中，所述数据传输功能包括以下的一项或多项：是否在非连续接收DRX激活期唤醒、在DRX激活期之前是否配置信道状态信息 CSI测量和上报功能、带宽部分BWP切换方案、DRX激活期中接收天线数量的配置方案、DRX激活期中的跨子帧调度方案、DRX激活期中的物理下行控制信道跳过PDCCH skipping方案。
结合第一方面，在第一方面的一种可能的设计中，第一DCI包括M个信息块，M为正整数；所述第一DCI格式信息中包括用于指示以下一项或多项的指示信息：第一终端设备对应的信息块在M个信息块中的索引；或者，第一DCI的长度；或者，信息块的长度。如此，可使第二终端设备在接收到第一DCI后，根据该第一DCI格式信息中指示的内容，从第一DCI包括的M个信息块中，确定自己对应的信息块，进而获得节能信息。
结合第一方面，在第一方面的一种可能的设计中，网络设备还可向第一终端设备发送用于指示第一无线网络临时标识RNTI的信息，该第一RNTI用于第一终端设备接收第一DCI，该第一RNTI与第一DCI格式信息对应。即，不同的DCI格式可对应不同的RNTI。
结合第一方面，在第一方面的一种可能的设计中，所述网络设备发送所述第一DCI的时域位置位于所述DRX的非激活期，网络设备还可向第一终端设备发送用于指示第一DCI的时域位置相对于下一个DRX激活期的时间提前量的信息。
结合第一方面，在第一方面的一种可能的设计中，网络设备可通过无线资源控制RRC消息发送以下的一项或多项信息：第一DCI格式信息、用于指示第一RNTI的信息、用于指示第一DCI的时域位置相对于下一个DRX激活期的时间提前量的信息。从而便于终端设备接收第一DCI。
第二方面，本申请实施例提供一种DCI的传输方法，该方法可应用于终端设备，该方法包括：第一终端设备从网络设备接收第一DCI格式信息，该第一DCI格式信息包含于第一DCI格式集合，该第一DCI格式集合包括N个DCI格式信息，该N个DCI格式信息分别对应N个不同的终端设备的数据传输功能，所述N为正整数；第一终端设备根据第一DCI格式信息从网络设备接收第一DCI。
采用本申请提供的技术方案，第一终端设备可接收网络设备根据第一DCI格式集合中的第一DCI格式信息发送的第一DCI。由于第一DCI集合中可包括一个或多个DCI格式信息，每个DCI格式信息又与一种终端设备的数据传输功能相对应，因此，网络设备在发送第一DCI时，可根据终端设备所支持的数据传输功能，选择合适的DCI格式进行发送，从而有效减小DCI发送过程中的资源开销，提高节能信号发送的灵活性。
结合第二方面，在第二方面的一种可能的设计中，所述数据传输功能包括以下的一项或多项：是否在非连续接收DRX激活期唤醒、在激活期之前是否配置信道状态信息CSI测量和上报功能、带宽部分BWP切换方案、DRX激活期中接收天线数量的配置方案、DRX激活期中的跨子帧调度方案、DRX激活期中的物理下行控制信道跳过PDCCH skipping方案。
结合第二方面，在第二方面的一种可能的设计中，第一DCI包括M个信息块，M为正整数；第一DCI格式信息中包括用于指示以下一项或多项的指示信息：第一终端设备对应的信息块在M个信息块中的索引；或者，第一DCI的长度；或者，信息块的长度。如此，可使第二终端设备在接收到第一DCI后，根据该第一DCI格式信息中指示的内容，从第一DCI包括的M个信息块中，确定自己对应的信息块，进而获得节能信息。
结合第二方面，在第二方面的一种可能的设计中，第一终端设备还可从网络设备接收用于指示第一无线网络临时标识RNTI的信息，该第一RNTI与第一DCI格式信息对应， 即不同的DCI格式可对应不同的RNTI；第一终端设备根据第一RNTI，接收第一DCI。
结合第二方面，在第二方面的一种可能的设计中，第一终端设备接收第一DCI的时域位置位于DRX的非激活期，第一终端设备还可从网络设备接收用于指示第一DCI的时域位置相对于下一个DRX激活期的时间提前量的信息。
结合第二方面，在第二方面的一种可能的设计中，第一终端设备还可通过无线资源控制RRC消息接收以下的一项或多项信息：第一DCI格式信息、用于指示第一RNTI的信息、用于指示第一DCI的时域位置相对于下一个DRX激活期的时间提前量的信息。从而便于终端设备接收第一DCI。
第三方面，本申请实施例提供一种通信装置，该通信装置具有实现上述第一方面或第一方面的任一种可能的设计中终端设备的功能，该通信装置可以为终端设备，例如手持终端设备、车载终端设备等，也可以为终端设备中包含的装置，例如芯片，也可以为包含终端设备的装置。上述终端设备的功能可以通过硬件实现，也可以通过硬件执行相应的软件实现，所述硬件或软件包括一个或多个与上述功能相对应的模块。
该通信装置也可以具有实现上述第二方面或第二方面的任一种可能的设计中网络设备的功能。该通信装置可以为网络设备，例如基站，也可以为网络设备中包含的装置，例如芯片。上述网络设备的功能可以通过硬件实现，也可以通过硬件执行相应的软件实现，所述硬件或软件包括一个或多个与上述功能相对应的模块。
在一种可能的设计中，该通信装置的结构中包括处理模块和收发模块，其中，处理模块被配置为支持该通信装置执行上述第一方面或第一方面的任一种设计中相应的功能、或执行上述第二方面或第二方面的任一种设计中相应的功能。收发模块用于支持该通信装置与其他通信设备之间的通信，例如该通信装置为网络设备时，可向第一终端设备发送第一DCI格式信息。该通信装置还可以包括存储模块，存储模块与处理模块耦合，其保存有通信装置必要的程序指令和数据。作为一种示例，处理模块可以为处理器，通信模块可以为收发器，存储模块可以为存储器，存储器可以和处理器集成在一起，也可以和处理器分离设置，本申请并不限定。
在另一种可能的设计中，该通信装置的结构中包括处理器，还可以包括存储器，处理器与存储器耦合，可用于执行存储器中存储的计算机程序指令，以使通信装置执行上述第一方面或第一方面的任一种可能的设计中的方法，或者执行上述第二方面或第二方面的任一种可能的设计中的方法。可选地，该通信装置还包括通信接口，处理器与通信接口耦合。当通信装置为终端设备时，该通信接口可以是收发器或输入/输出接口；当该通信装置为终端设备中包含的芯片时，该通信接口可以是芯片的输入/输出接口。可选地，收发器可以为收发电路，输入/输出接口可以是输入/输出电路。
第四方面，本申请实施例提供一种芯片系统，包括：处理器，所述处理器与存储器耦合，所述存储器用于存储程序或指令，当所述程序或指令被所述处理器执行时，使得该芯片系统实现上述第一方面的任一种可能的设计中的方法、或实现上述第二方面的任一种可能的设计中的方法。
可选地，该芯片系统还包括接口电路。该接口电路用于接收代码指令并传输至所述处理器。
可选地，该芯片系统中的处理器可以为一个或多个。该处理器可以通过硬件实现也可以通过软件实现。当通过硬件实现时，该处理器可以是逻辑电路、集成电路等。当通过软 件实现时，该处理器可以是一个通用处理器，通过读取存储器中存储的软件代码来实现。
可选地，该芯片系统中的存储器也可以为一个或多个。该存储器可以与处理器集成在一起，也可以和处理器分离设置，本申请并不限定。示例性的，存储器可以是非瞬时性处理器，例如只读存储器ROM，其可以与处理器集成在同一块芯片上，也可以分别设置在不同的芯片上，本申请对存储器的类型，以及存储器与处理器的设置方式不作具体限定。
第五方面，本申请实施例提供一种计算机可读存储介质，所述计算机存储介质中存储有计算机可读指令，当计算机读取并执行所述计算机可读指令时，使得计算机执行上述第一方面的任一种可能的设计中的方法、或执行上述第二方面的任一种可能的设计中的方法。
第六方面，本申请实施例提供一种计算机程序产品，当计算机读取并执行所述计算机程序产品时，使得计算机执行上述第一方面的任一种可能的设计中的方法、或执行上述第二方面的任一种可能的设计中的方法。
第七方面，本申请实施例提供一种通信系统，该通信系统包括上述各方面中所述的网络设备和至少一个终端设备。
附图说明
图1为本申请实施例适用的一种通信系统的网络架构示意图；
图2为本申请实施例提供的一种DCI的传输方法的流程示意图；
图3为本申请实施例提供的一种DCI格式的示意图；
图4为本申请实施例提供的一种DCI的传输方法的另一流程示意图；
图5为本申请实施例提供的第一DCI格式集合中的多种DCI格式的示意图；
图6为本申请实施例提供的一种通信装置的结构示意图；
图7为本申请实施例提供的一种通信装置的另一结构示意图；
图8为本申请实施例提供的另一种通信装置的结构示意图；
图9为本申请实施例提供的另一种通信装置的另一结构示意图。
具体实施方式
为了使本申请实施例的目的、技术方案和优点更加清楚，下面将结合附图对本申请实施例作进一步地详细描述。
本申请实施例的技术方案可以应用于各种通信系统，例如：全球移动通信(global system for mobile communications，GSM)系统、码分多址(code division multiple access，CDMA)系统、宽带码分多址(wideband code division multiple access，WCDMA)系统、通用分组无线业务(general packet radio service，GPRS)、长期演进(long term evolution，LTE)系统、LTE频分双工(frequency division duplex，FDD)系统、LTE时分双工(time division duplex，TDD)、通用移动通信系统(universal mobile telecommunication system，UMTS)、全球互联微波接入(worldwide interoperability for microwave access，WIMAX)通信系统、第五代(5th generation，5G)系统或新无线(new radio，NR)，或者应用于未来的通信系统或其它类似的通信系统等。
请参考图1，为本申请实施例适用的一种通信系统的网络架构示意图。该通信系统包括网络设备110、终端设备101、终端设备102、终端设备103、终端设备104、终端设备 105和终端设备106。网络设备可通过上行链路(uplink，UL)和下行链路(downlink，DL)与至少一个终端设备(如终端设备101)进行通信。
图1中的网络设备可以为接入网设备，例如基站。其中，接入网设备在不同的系统对应不同的设备，例如在第四代移动通信技术(the 4 th generation，4G)系统中可以对应eNB，在5G系统中对应5G中的接入网设备，例如gNB。然本申请实施例所提供的技术方案也可以应用于未来的移动通信系统中，因此图1中的网络设备也可以对应未来的移动通信系统中的接入网设备。
应理解，该通信系统中也可以存在多个网络设备，每个网络设备可以为多个终端设备提供服务，本申请实施例对通信系统中网络设备和终端设备的数量不作限定。图1中的网络设备，以及多个终端设备中的部分终端设备或全部终端设备中的每个终端设备都可以实施本申请实施例所提供的技术方案。另外，图1中的终端设备可以是不同类型的终端设备，例如可包括手机、物联网中的智能水表、电表等mMTC类终端设备，图1中所示出的终端设备的各种类型也仅是其中的部分示例，也应理解，本申请实施例中的终端设备不限于此。
以下，对本申请实施例中的部分用语进行解释说明，以便于本领域技术人员理解。
1)终端设备，又可称之为用户设备(user equipment，UE)、移动台(mobile station，MS)、移动终端(mobile terminal，MT)等，是一种向用户提供语音和/或数据连通性的设备。所述终端设备可以经无线接入网(radio access network，RAN)与核心网进行通信，与RAN交换语音和/或数据。例如，终端设备可以是具有无线连接功能的手持式设备、车载设备、车辆用户设备等。目前，一些终端设备的示例为：手机(mobile phone)、平板电脑、笔记本电脑、掌上电脑、移动互联网设备(mobile internet device，MID)、可穿戴设备、虚拟现实(virtual reality，VR)设备、增强现实(augmented reality，AR)设备、工业控制(industrial control)中的无线终端、无人驾驶(self driving)中的无线终端、远程手术(remote medical surgery)中的无线终端、智能电网(smart grid)中的无线终端、运输安全(transportation safety)中的无线终端、智慧城市(smart city)中的无线终端、智慧家庭(smart home)中的无线终端等。
作为示例而非限定，在本申请实施例中，该终端设备还可以是可穿戴设备。可穿戴设备也可以称为穿戴式智能设备或智能穿戴式设备等，是应用穿戴式技术对日常穿戴进行智能化设计、开发出可以穿戴的设备的总称，如眼镜、手套、手表、服饰及鞋等。可穿戴设备即直接穿在身上，或是整合到用户的衣服或配件的一种便携式设备。可穿戴设备不仅仅是一种硬件设备，更是通过软件支持以及数据交互、云端交互来实现强大的功能。广义穿戴式智能设备包括功能全、尺寸大、可不依赖智能手机实现完整或者部分的功能，例如：智能手表或智能眼镜等，以及只专注于某一类应用功能，需要和其它设备如智能手机配合使用，如各类进行体征监测的智能手环、智能头盔、智能首饰等。
本申请实施例中的终端设备还可以是作为一个或多个部件或者单元而内置于车辆的车载模块、车载模组、车载部件、车载芯片或者车载单元，车辆通过内置的所述车载模块、车载模组、车载部件、车载芯片或者车载单元可以实施本申请的方法。
2)网络设备，是网络中用于将终端设备接入到无线网络的设备。所述网络设备可以为无线接入网中的节点，又可以称为基站，还可以称为无线接入网(radio access network，RAN)节点(或设备)。网络设备可用于将收到的空中帧与网际协议(IP)分组进行相互转换，作为终端设备与接入网的其余部分之间的路由器，其中接入网的其余部分可包括IP 网络。网络设备还可协调对空口的属性管理。例如，网络设备可以包括长期演进(long term evolution，LTE)系统或演进的LTE系统(LTE-Advanced，LTE-A)中的演进型基站(NodeB或eNB或e-NodeB，evolutional Node B)，如传统的宏基站eNB和异构网络场景下的微基站eNB，或者也可以包括第五代移动通信技术(5th generation，5G)新无线(new radio，NR)系统中的下一代节点B(next generation node B，gNB)，或者还可以包括传输接收点(transmission reception point，TRP)、家庭基站(例如，home evolved NodeB，或home Node B，HNB)、基带单元(base band unit，BBU)、基带池BBU pool，或WiFi接入点(access point，AP)等，再或者还可以包括云接入网(cloud radio access network，CloudRAN)系统中的集中式单元(centralized unit，CU)和分布式单元(distributed unit，DU)，本申请实施例并不限定。再例如，一种V2X技术中的网络设备为路侧单元(road side unit，RSU)，RSU可以是支持V2X应用的固定基础设施实体，可以与支持V2X应用的其它实体交换消息。
3)下行控制信道，例如PDCCH，或者增强的物理下行控制信道(enhanced physical downlink control channel，EPDCCH)，或者也可能包括其他的下行控制信道。具体的不做限制。
4)本申请实施例中的术语“系统”和“网络”可被互换使用。“多个”是指两个或两个以上，鉴于此，本申请实施例中也可以将“多个”理解为“至少两个”。“至少一个”，可理解为一个或多个，例如理解为一个、两个或更多个。例如，包括至少一个，是指包括一个、两个或更多个，而且不限制包括的是哪几个。例如，包括A、B和C中的至少一个，那么包括的可以是A、B、C，A和B，A和C，B和C，或A和B和C。同理，对于“至少一种”等描述的理解，也是类似的。“和/或”，描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。另外，字符“/”，如无特殊说明，一般表示前后关联对象是一种“或”的关系。
除非有相反的说明，本申请实施例提及“第一”、“第二”等序数词用于对多个对象进行区分，不用于限定多个对象的顺序、时序、优先级或者重要程度，并且“第一”、“第二”的描述也并不限定对象一定不同。
请参考图2，为本申请实施例提供的一种下行控制信息DCI的传输方法的流程示意图，该方法具体包括如下的步骤S201至步骤S204。
步骤S201、网络设备向第一终端设备发送第一DCI格式信息，该第一DCI格式信息用于指示第一DCI格式。
本申请实施例中所述的DCI格式信息用于指示一种DCI格式。图3为本申请实施例提供的一种DCI格式的示意图，如图3所示，一个DCI中可包括长度相同的多个信息块，每个信息块中包含对应终端设备的节能信息，多个信息块中的最后一个信息块存储有对DCI进行加扰的无线网络临时标识(radio network temporary indication，RNTI)，该RNTI可用于指示终端设备所在的PDCCH分组，以便终端设备识别并接收DCI。在一种可能的设计中，该RNTI例如可以是功率节省(power saving，PS)-RNTI。所述信息块的长度相同是指，各个信息块中所能包含的信息的比特数相同。
应理解，一个DCI中的多个信息块对应的终端设备可以不同，如此，多个终端设备可以复用同一个DCI来获取节能信息，从而有助于减小网络侧的资源消耗，提高节能信号的 效率。进一步地，针对多个信息块中的每个信息块，该信息块对应的终端设备也可以为一个或多个，也就是说，多个终端设备也可以复用DCI中的一个信息块，表示这些终端设备具有相同的节能信息。
步骤S202、第一终端设备从网络设备接收第一DCI格式信息。
步骤S203、网络设备根据该第一DCI格式信息向第一终端设备发送第一DCI。
所述网络设备根据第一DCI格式信息向第一终端设备发送第一DCI可以为，网络设备采用第一DCI格式信息所指示的第一DCI格式向第一终端设备发送第一DCI。由于网络设备发送的第一DCI采用了第一DCI格式，因此，在步骤S201中网络设备需要向第一终端设备发送用于指示第一DCI格式的第一DCI格式信息，以便终端设备能够根据该第一DCI格式获取节能信息。可以理解，网络设备向第一终端设备发送第一DCI格式信息可以在发送第一DCI之前。
结合图3中所示的DCI格式可知，若第一DCI中包括M个信息块，M为正整数，那么第一DCI格式信息中可以包括用于指示第一终端设备对应的信息块在M个信息块中的索引、第一DCI的长度、M个信息块中每个信息块的长度中的一项或多项的信息。
需要说明的是，所述DCI可以为group DCI。因此，网络设备根据第一DCI格式信息向第一终端设备发送第一DCI还可以为，网络设备可以向一组终端设备发送该第一DCI，第一终端设备是一组终端设备中的一个。
步骤S204、第一终端设备根据第一DCI格式信息从网络设备接收第一DCI。
第一终端设备接收到第一DCI后，可根据第一DCI指示信息中指示的第一DCI的长度，第一DCI中的每个信息块的长度，第一DCI中包括的信息块的数量M，第一终端设备对应的信息块在M个信息块中的索引，确定出第一终端设备对应的信息块，进而从该信息块中获取节能信息。
本申请实施例中，网络设备还可以向第一终端设备发送用于指示第一RNTI的信息。网络设备在发送第一DCI时，会采用该第一RNTI对第一DCI进行加扰。该第一RNTI与第一DCI采用的第一DCI格式相对应，可用于第一终端设备识别自己所在的PDCCH分组。也就是说，第一终端设备可根据第一RNTI来检测DCI，根据该第一RNTI是否能够解扰DCI来判断某个DCI中有没有包含自己节能信息的信息块。可选地，该第一RNTI可以为PS-RNTI。
网络设备可具体通过PDCCH信道来发送第一DCI，网络设备向发送第一DCI的时域位置可以位于DRX的激活期，也可以位于DRX的非激活期，若发送第一DCI的时域位置位于DRX的非激活期，那么网络设备还可进一步向第一终端设备发送用于指示第一DCI的时域位置相对于下一个DRX激活期的时间提前量的信息。
需要说明的是，网络设备可以通过RRC消息向第一终端设备发送上述包括第一DCI格式信息、用于指示第一RNTI的信息、用于指示第一DCI的时域位置相对于下一个DRX激活期的时间提前量的信息中的一项或多项信息。这些信息可以包括在同一条RRC消息中发送给第一终端设备，也可以包括在不同的RRC消息中发送给第一终端设备，本申请对此并不限定。例如，如图4中的步骤S401至步骤S406所示，网络设备在发送第一DCI之前，可向第一终端设备发送RRC消息，该RRC消息中包括第一DCI格式信息、用于指示第一RNTI的信息和用于指示第一DCI的时域位置相对于下一个DRX激活期的时间提前量的信息。
本申请实施例中，第一DCI格式信息包含于第一DCI格式集合。该第一DCI格式集合包括N个DCI格式信息，这N个DCI格式信息互不相同，分别用于指示不同的DCI格式，并且分别对应N个不同的终端设备的数据传输功能，N为正整数。第一DCI格式信息是指该N个DCI格式信息中的其中一个DCI格式信息。
由于DCI格式信息用于指示DCI格式，N个DCI格式信息互不相同，则表示这N个DCI格式信息所指示的DCI格式不同。每种DCI格式可用于支持一种终端设备的数据传输功能，且不同的DCI格式支持的终端设备的数据传输功能不同。
所述DCI格式不同可包括，DCI的长度、DCI中每个信息块的长度、DCI中每个信息块中包括的节能信息的类型、采用的对DCI进行加扰的RNTI、支持的数据传输功能等中的一项或多项不同。也就是说，若两个DCI格式在DCI的长度、DCI中每个信息块的长度、DCI中每个信息块中包括的节能信息的类型、采用的对DCI进行加扰的RNTI、支持的数据传输功能等方面存在至少一项不同，就可以认为这两个DCI格式是不同的DCI格式。
本申请实施例中提及的数据传输功能可包括以下的一项或多项：
是否在非连续接收DRX激活期唤醒、在DRX激活期之前是否配置信道状态信息(channel state information，CSI)测量和上报、带宽部分(bandwidth part，BWP)切换方案、DRX激活期中接收天线数量的配置方案、DRX激活期中的跨子帧调度方案、DRX激活期中的物理下行控制信道跳过PDCCH skipping方案。
可选地，在一些实施例中可以包含其他类型的用于功率节省功能的数据传输功能。
终端设备的数据传输功能也可以理解为终端设备采用的功率节省方案的组合。具体的，是否在非连续接收DRX激活期唤醒可以理解为，终端设备的唤醒(wake up)功能。通常wake up是WUS的基本功能，所有类型的终端均应支持。WUS一般位于DRX激活期前某一时刻发送，也就是说WUS在DRX非激活期发送，用于指示终端设备在随后的DRX激活期是否唤醒以进行监听PDCCH以及其他业务行为。唤醒功能可通过DCI中的1比特信息来显示地指示终端设备在激活期激活监听PDCCH，还是进入睡眠状态sleep。例如，当该比特的值为“1”指示激活监听PDCCH，比特的值为“0”指示进入睡眠状态。
在DRX激活期之前是否配置信道状态信息CSI测量和上报功能可以理解为，终端设备的CSI测量和上报。由于终端设备在进入激活期之前会进行长时间的睡眠，在睡眠期终端设备不进行CSI测量，CSI测量用途包括信道质量测量、波束管理、信道相位跟踪等。对于某些位置移动的终端设备，在经过长时间睡眠状态后，会出现网络设备和终端设备对当前信道质量估计不准确、波束不匹配的情况，因此在进行唤醒时，可指示这类终端设备进行CSI测量和上报。可通过DCI中的1比特信息显示通知终端设备。CSI测量和上报功能是终端设备可选的配置，可以针对部分终端设备配置CSI测量和上报功能，且只有配置了这种功能的终端设备，在DCI中有该功能的指示信息。
BWP切换(switch)即BWP切换功能。BWP是终端设备工作的带宽资源，每个终端设备最多可配置4个BWP，每次仅有一个BWP被激活，终端设备在激活的BWP上进行业务传输和RRM测量，根据待传输数据选择合适大小的BWP有利用降低功耗。对于不同的业务模型，数据包到达的时间和大小不一样，因此对于某次激活时刻，当前待传输的数据量是不同，因此在指示终端设备唤醒时可同时调整当前激活的BWP，进行BWP切换。该功能对突发性的业务模型更有效，可通过DCI中的2比特信息指示在配置的4个BWP中切换，而对于业务达到周期比较稳定的终端设备，可以不包含BWP切换的功能，BWP 切换功能是终端设备可选的配置。
图5示例性示出了本申请实施例提供的第一DCI格式集合中的多个DCI格式信息，如图5所示，该第一DCI格式集合中包括4个DCI格式信息，其中DCI格式1支持的数据传输功能包括唤醒，DCI格式2支持的数据传输功能包括唤醒以及CSI测量和上报，DCI格式3支持的数据传输功能包括唤醒和BWP切换，DCI格式4支持的数据传输功能包括唤醒、BWP切换以及CSI测量和上报。应理解，图5中所示出的DCI格式信息的数量仅为一种示例，本申请对第一DCI格式集合中的DCI格式信息数量不作具体限定，可以由本领域技术人员根据实际需要进行设置。
图5中所示的4种DCI格式具有不同的DCI长度，即图5中所示L max1、L max2、L max3和L max4。并且不同的DCI格式中的信息块的长度也不同。一般来说，数据传输功能中包含的功率节省方案越多，信息块的长度也就越大。此外，4种DCI格式还分别可采用专用的与该DCI格式对应的RNTI进行加扰。
需要说明的是，第一DCI格式集合中的N个DCI格式信息所指示的DCI的长度可以相同，或者每种DCI格式信息指示的DCI长度也可以单独进行配置，且配置DCI长度可以相同或者不同。由于不同的DCI格式中，信息块的长度是不同的，若N种DCI格式的DCI的长度相同，则意味着不同的DCI中可容纳的终端设备的数量不同，信息块的长度越小，则可以复用更多的终端设备。但是也应理解，本申请中并不限定不同的DCI格式的信息块的长度一定不同，在其支持的数据传输功能不同的场景下，不同的DCI格式中信息块的长度也有可能相同。
举例来说，结合图3中所示的DCI格式，假设4种DCI格式的DCI长度均为24比特。如果有50个终端设备，分别为终端设备～终端设备49，根据终端设备的业务和功率特征分成四组，其中，第一组采用DCI格式1，包括终端设备0～终端设备23，PS-RNTI(power saving-RNTI)配置为OXAAAA；第二组采用DCI格式2，包括终端设备24～终端设备35，PS-RNTI配置为OXBBBB；第三组采用DCI格式3，包括终端设备36～终端设备43，PS-RNTI配置为OXCCCC；第四组采用DCI格式4，包括终端设备44～终端设备49，PS-RNTI配置为OXDDDD。
表1终端设备分组及采用的DCI格式
Figure PCTCN2019101202-appb-000001
四个终端设备组采用的DCI格式可如表1所示，以UE0～UE23这组为例，网络设备可以通过RRC信令给UE0～UE23分别配置：
DCI pattern：pattern1-wake up；
Block index：取值范围[0，23]；
DCI长度：24bit；
PS-RANTI:OXAAAA；
网络设备根据高层配置在DCI中相应的block index中指示相应的终端设备是否进行唤醒，并且以PS-RANTI OXAAAA加扰该DCI的CRC检验比特。终端设备监听以PS-RNTI OXAAAA加扰的PDCCH，如果成功检测到该终端设备分组的PDCCH，则根据配置在block index中读取唤醒指示，如果指示唤醒则在后面的DRX激活期中进行唤醒，监听PDCCH；如果指示不唤醒，则在后面的DRX激活期不进行唤醒，继续进入DRX off状态。
由表1可以看出，当所有DCI格式的长度均为24比特时，分别支持的最小用户数为24、12、8、6，不同的DCI格式的每个信息块的长度越小，支持的用户数越多，通过对不同数据传输功能引入不同的DCI格式，提高了DCI的使用效率。
本申请实施例提供一种通信装置，请参阅图6，为本申请实施例提供的一种通信装置的结构示意图，该通信装置600包括：收发模块610和处理模块620。该通信装置可用于实现上述任一方法实施例中涉及网络设备的功能。例如，该通信装置可以是网络设备或网络设备中包括的芯片。
当该通信装置作为网络设备，执行图3中所示的方法实施例时，收发模块610，用于向第一终端设备发送第一DCI格式信息，该第一DCI格式信息包含于第一DCI格式集合，该第一DCI格式集合包括N个DCI格式信息，所述N个DCI格式信息分别对应N个不同的终端设备的数据传输功能，所述N为正整数；处理模块620，用于根据第一DCI格式信息通过收发模块610向第一终端设备发送第一DCI。
在一种可能的设计中，所述数据传输功能包括以下的一项或多项：
是否在非连续接收DRX激活期唤醒、在DRX激活期之前是否配置信道状态信息CSI测量和上报功能、带宽部分BWP切换方案、DRX激活期中接收天线数量的配置方案、DRX激活期中的跨子帧调度方案、DRX激活期中的物理下行控制信道跳过PDCCH skipping方案。
在一种可能的设计中，第一DCI包括M个信息块，所述M为正整数；第一DCI格式信息中包括用于指示以下一项或多项的指示信息：第一终端设备对应的信息块在M个信息块中的索引；或者，第一DCI的长度；或者，信息块的长度。
在一种可能的设计中，收发模块610还用于向第一终端设备发送用于指示第一无线网络临时标识RNTI的信息，该第一RNTI用于第一终端设备接收第一DCI，该第一RNTI与第一DCI格式信息对应。
在一种可能的设计中，所述收发模块610发送第一DCI的时域位置位于DRX的非激活期，收发模块610还用于：向第一终端设备发送用于指示第一DCI的时域位置相对于下一个DRX激活期的时间提前量的信息。
在一种可能的设计中，收发模块610还用于通过无线资源控制RRC消息发送以下的一项或多项信息：第一DCI格式信息、用于指示第一RNTI的信息、用于指示第一DCI的时域位置相对于下一个DRX激活期的时间提前量的信息。
应理解，该通信装置中涉及的处理模块620可以由处理器或处理器相关电路组件实现，收发模块610可以由收发器或收发器相关电路组件实现。该通信装置中的各个模块的操作 和/或功能分别为了实现图3或图4中所示方法的相应流程，为了简洁，在此不再赘述。
请参阅图7，为本申请实施例中提供的一种通信装置的另一结构示意图。该通信装置可具体为一种网络设备，例如基站，用于实现上述任一方法实施例中涉及网络设备的功能。
该网络设备包括：一个或多个射频单元，如远端射频单元(remote radio unit，RRU)701和一个或多个基带单元(baseband unit，BBU)(也可称为数字单元，digital unit，DU)702。所述RRU 701可以称为收发单元、收发机、收发电路、或者收发器等等，其可以包括至少一个天线7011和射频单元7012。所述RRU 701部分主要用于射频信号的收发以及射频信号与基带信号的转换。所述BBU 702部分主要用于进行基带处理，对基站进行控制等。所述RRU 701与BBU 702可以是物理上设置在一起，也可以物理上分离设置的，即分布式基站。
所述BBU 702为基站的控制中心，也可以称为处理单元，主要用于完成基带处理功能，如信道编码，复用，调制，扩频等等。例如所述BBU(处理单元)702可以用于控制基站执行上述方法实施例中关于网络设备的操作流程。
在一个示例中，所述BBU 702可以由一个或多个单板构成，多个单板可以共同支持单一接入指示的无线接入网(如LTE网)，也可以分别支持不同接入制式的无线接入网(如LTE网，5G网或其他网)。所述BBU 702还可以包括存储器7021和处理器7022，所述存储器7021用于存储必要的指令和数据。所述处理器7022用于控制基站进行必要的动作，例如用于控制基站执行上述方法实施例中发送操作。所述存储器7021和处理器7022可以服务于一个或多个单板。也就是说，可以每个单板上单独设置存储器和处理器。也可以是多个单板共用相同的存储器和处理器。此外每个单板上还可以设置有必要的电路。
本申请实施例还提供另一种通信装置，请参阅图8，为本申请实施例提供的另一种通信装置的结构示意图，该通信装置800包括：收发模块810和处理模块820。该通信装置可用于实现上述任一方法实施例中涉及终端设备的功能。例如，该通信装置可以是终端设备，例如手持终端设备或车载终端设备；该通信装置还可以是终端设备中包括的芯片，或者包括终端设备的装置，如各种类型的车辆等。
当该通信装置作为终端设备，执行图3中所示的方法实施例时，收发模块810用于从网络设备接收第一DCI格式信息，该第一DCI格式信息包含于第一DCI格式集合，该第一DCI格式集合包括N个DCI格式信息，所述N个DCI格式信息分别对应N个不同的终端设备的数据传输功能，所述N为正整数；处理模块820，用于根据第一DCI格式信息从网络设备接收第一DCI。
在一种可能的设计中，所述数据传输功能包括以下的一项或多项：
是否在非连续接收DRX激活期唤醒、在激活期之前是否配置信道状态信息CSI测量和上报功能、带宽部分BWP切换方案、DRX激活期中接收天线数量的配置方案、DRX激活期中的跨子帧调度方案、DRX激活期中的物理下行控制信道跳过PDCCH skipping方案。
在一种可能的设计中，第一DCI包括M个信息块，所述M为正整数；第一DCI格式信息中包括用于指示以下一项或多项的指示信息：第一终端设备对应的信息块在M个信息块中的索引；或者，第一DCI的长度；或者，信息块的长度。
在一种可能的设计中，收发模块810还用于从网络设备接收用于指示第一无线网络临时标识RNTI的信息，该第一RNTI与第一DCI格式信息对应；以及根据第一RNTI，接收第一DCI。
在一种可能的设计中，接收第一DCI的时域位置位于所述DRX的非激活期，收发模块810还用于从网络设备接收用于指示第一DCI的时域位置相对于下一个DRX激活期的时间提前量的信息。
在一种可能的设计中，收发模块810还用于通过无线资源控制RRC消息接收以下的一项或多项信息：第一DCI格式信息、用于指示第一RNTI的信息、用于指示第一DCI的时域位置相对于下一个DRX激活期的时间提前量的信息。
该通信装置中涉及的处理模块820可以由处理器或处理器相关电路组件实现，收发模块810可以由收发器或收发器相关电路组件实现。该通信装置中的各个模块的操作和/或功能分别为了实现图3或图4中所示方法的相应流程，为了简洁，在此不再赘述。
请参阅图9，为本申请实施例中提供的一种通信装置的另一结构示意图。该通信装置具体可为一种终端设备。便于理解和图示方便，在图9中，终端设备以手机作为例子。如图9所示，终端设备包括处理器，还可以包括存储器，当然，也还可以包括射频电路、天线以及输入输出装置等。处理器主要用于对通信协议以及通信数据进行处理，以及对终端设备进行控制，执行软件程序，处理软件程序的数据等。存储器主要用于存储软件程序和数据。射频电路主要用于基带信号与射频信号的转换以及对射频信号的处理。天线主要用于收发电磁波形式的射频信号。输入输出装置，例如触摸屏、显示屏，键盘等主要用于接收用户输入的数据以及对用户输出数据。需要说明的是，有些种类的终端设备可以不具有输入输出装置。
当需要发送数据时，处理器对待发送的数据进行基带处理后，输出基带信号至射频电路，射频电路将基带信号进行射频处理后将射频信号通过天线以电磁波的形式向外发送。当有数据发送到终端设备时，射频电路通过天线接收到射频信号，将射频信号转换为基带信号，并将基带信号输出至处理器，处理器将基带信号转换为数据并对该数据进行处理。为便于说明，图9中仅示出了一个存储器和处理器。在实际的终端设备产品中，可以存在一个或多个处理器和一个或多个存储器。存储器也可以称为存储介质或者存储设备等。存储器可以是独立于处理器设置，也可以是与处理器集成在一起，本申请实施例对此不做限制。
在本申请实施例中，可以将具有收发功能的天线和射频电路视为终端设备的收发单元，将具有处理功能的处理器视为终端设备的处理单元。如图9所示，终端设备包括收发单元910和处理单元920。收发单元也可以称为收发器、收发机、收发装置等。处理单元也可以称为处理器，处理单板，处理模块、处理装置等。可选的，可以将收发单元910中用于实现接收功能的器件视为接收单元，将收发单元910中用于实现发送功能的器件视为发送单元，即收发单元910包括接收单元和发送单元。收发单元有时也可以称为收发机、收发器、或收发电路等。接收单元有时也可以称为接收机、接收器、或接收电路等。发送单元有时也可以称为发射机、发射器或者发射电路等。应理解，收发单元910用于执行上述方法实施例中终端设备侧的发送操作和接收操作，处理单元920用于执行上述方法实施例中终端设备上除了收发操作之外的其他操作。
本申请实施例还提供一种芯片系统，包括：处理器，所述处理器与存储器耦合，所述存储器用于存储程序或指令，当所述程序或指令被所述处理器执行时，使得该芯片系统实现上述任一方法实施例中的方法。
可选地，该芯片系统中的处理器可以为一个或多个。该处理器可以通过硬件实现也可 以通过软件实现。当通过硬件实现时，该处理器可以是逻辑电路、集成电路等。当通过软件实现时，该处理器可以是一个通用处理器，通过读取存储器中存储的软件代码来实现。
可选地，该芯片系统中的存储器也可以为一个或多个。该存储器可以与处理器集成在一起，也可以和处理器分离设置，本申请并不限定。示例性的，存储器可以是非瞬时性处理器，例如只读存储器ROM，其可以与处理器集成在同一块芯片上，也可以分别设置在不同的芯片上，本申请对存储器的类型，以及存储器与处理器的设置方式不作具体限定。
示例性的，该芯片系统可以是现场可编程门阵列(field programmable gate array，FPGA)，可以是专用集成芯片(application specific integrated circuit，ASIC)，还可以是系统芯片(system on chip，SoC)，还可以是中央处理器(central processor unit，CPU)，还可以是网络处理器(network processor，NP)，还可以是数字信号处理电路(digital signal processor，DSP)，还可以是微控制器(micro controller unit，MCU)，还可以是可编程控制器(programmable logic device，PLD)或其他集成芯片。
应理解，上述方法实施例中的各步骤可以通过处理器中的硬件的集成逻辑电路或者软件形式的指令完成。结合本申请实施例所公开的方法步骤可以直接体现为硬件处理器执行完成，或者用处理器中的硬件及软件模块组合执行完成。
本申请实施例还提供一种计算机可读存储介质，所述计算机存储介质中存储有计算机可读指令，当计算机读取并执行所述计算机可读指令时，使得计算机执行上述任一方法实施例中的方法。
本申请实施例还提供一种计算机程序产品，当计算机读取并执行所述计算机程序产品时，使得计算机执行上述任一方法实施例中的方法。
本申请实施例还提供一种通信系统，该通信系统包括网络设备和至少一个上述各方法实施例中所述的终端设备。
应理解，本申请实施例中提及的处理器可以是中央处理单元(central processing unit，CPU)，还可以是其他通用处理器、数字信号处理器(digital signal processor，DSP)、专用集成电路(application specific integrated circuit，ASIC)、现成可编程门阵列(field programmable gate array，FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件等。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。
还应理解，本申请实施例中提及的存储器可以是易失性存储器或非易失性存储器，或可包括易失性和非易失性存储器两者。其中，非易失性存储器可以是只读存储器(read-only memory，ROM)、可编程只读存储器(programmable ROM，PROM)、可擦除可编程只读存储器(erasable PROM，EPROM)、电可擦除可编程只读存储器(electrically EPROM，EEPROM)或闪存。易失性存储器可以是随机存取存储器(random access memory，RAM)，其用作外部高速缓存。通过示例性但不是限制性说明，许多形式的RAM可用，例如静态随机存取存储器(static RAM，SRAM)、动态随机存取存储器(dynamic RAM，DRAM)、同步动态随机存取存储器(synchronous DRAM，SDRAM)、双倍数据速率同步动态随机存取存储器(double data rate SDRAM，DDR SDRAM)、增强型同步动态随机存取存储器(enhanced SDRAM，ESDRAM)、同步连接动态随机存取存储器(synchlink DRAM，SLDRAM)和直接内存总线随机存取存储器(direct rambus RAM，DR RAM)。
需要说明的是，当处理器为通用处理器、DSP、ASIC、FPGA或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件时，存储器(存储模块)集成在处理器中。
应注意，本文描述的存储器旨在包括但不限于这些和任意其它适合类型的存储器。
应理解，在本申请的各种实施例中，上述各过程的序号的大小并不意味着执行顺序的先后，各过程的执行顺序应以其功能和内在逻辑确定，而不应对本发明实施例的实施过程构成任何限定。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统、装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(Read-Only Memory，ROM)、随机存取存储器(Random Access Memory，RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应所述以权利要求的保护范围为准。

Claims (27)

  1. 一种下行控制信息DCI的传输方法，其特征在于，所述方法包括：
    网络设备向第一终端设备发送第一DCI格式信息，所述第一DCI格式信息包含于第一DCI格式集合，所述第一DCI格式集合包括N个DCI格式信息，所述N个DCI格式信息分别对应N个不同的终端设备的数据传输功能，所述N为正整数；
    所述网络设备根据所述第一DCI格式信息向所述第一终端设备发送第一DCI。
  2. 根据权利要求1所述的方法，其特征在于，所述数据传输功能包括以下的一项或多项：
    是否在非连续接收DRX激活期唤醒、在DRX激活期之前是否配置信道状态信息CSI测量和上报功能、带宽部分BWP切换方案、DRX激活期中接收天线数量的配置方案、DRX激活期中的跨子帧调度方案、DRX激活期中的物理下行控制信道跳过PDCCH skipping方案。
  3. 根据权利要求1或2所述的方法，其特征在于，所述第一DCI包括M个信息块，所述M为正整数；所述第一DCI格式信息中包括用于指示以下一项或多项的指示信息：
    所述第一终端设备对应的信息块在所述M个信息块中的索引；或者，
    所述第一DCI的长度；或者，
    所述信息块的长度。
  4. 根据权利要求1至3中任一项所述的方法，其特征在于，所述方法还包括：
    所述网络设备向所述第一终端设备发送用于指示第一无线网络临时标识RNTI的信息，所述第一RNTI用于所述第一终端设备接收所述第一DCI，所述第一RNTI与所述第一DCI格式信息对应。
  5. 根据权利要求1至4中任一项所述的方法，其特征在于，所述网络设备发送所述第一DCI的时域位置位于所述DRX的非激活期，所述方法还包括：
    所述网络设备向所述第一终端设备发送用于指示所述第一DCI的时域位置相对于下一个DRX激活期的时间提前量的信息。
  6. 根据权利要求1至5中任一项所述的方法，其特征在于，所述方法还包括：
    所述网络设备通过无线资源控制RRC消息发送以下的一项或多项信息：
    所述第一DCI格式信息、用于指示所述第一RNTI的信息、用于指示所述第一DCI的时域位置相对于下一个DRX激活期的时间提前量的信息。
  7. 一种DCI的传输方法，其特征在于，所述方法包括：
    第一终端设备从网络设备接收第一DCI格式信息，所述第一DCI格式信息包含于第一DCI格式集合，所述第一DCI格式集合包括N个DCI格式信息，所述N个DCI格式信息分别对应N个不同的终端设备的数据传输功能，所述N为正整数；
    所述第一终端设备根据所述第一DCI格式信息从所述网络设备接收第一DCI。
  8. 根据权利要求7所述的方法，其特征在于，所述数据传输功能包括以下的一项或多项：
    是否在非连续接收DRX激活期唤醒、在激活期之前是否配置信道状态信息CSI测量和上报功能、带宽部分BWP切换方案、DRX激活期中接收天线数量的配置方案、DRX激活期中的跨子帧调度方案、DRX激活期中的物理下行控制信道跳过PDCCH skipping方案。
  9. 根据权利要求7或8所述的方法，其特征在于，所述第一DCI包括M个信息块，所述M为正整数；所述第一DCI格式信息中包括用于指示以下一项或多项的指示信息：
    所述第一终端设备对应的信息块在所述M个信息块中的索引；或者，
    所述第一DCI的长度；或者，
    所述信息块的长度。
  10. 根据权利要求7至9中任一项所述的方法，其特征在于，所述方法还包括：
    所述第一终端设备从所述网络设备接收用于指示第一无线网络临时标识RNTI的信息，所述第一RNTI与所述第一DCI格式信息对应；
    所述第一终端设备根据所述第一RNTI，接收所述第一DCI。
  11. 根据权利要求7至10中任一项所述的方法，其特征在于，所述第一终端设备接收所述第一DCI的时域位置位于所述DRX的非激活期，所述方法还包括：
    所述第一终端设备从所述网络设备接收用于指示所述第一DCI的时域位置相对于下一个DRX激活期的时间提前量的信息。
  12. 根据权利要求7至11中任一项所述的方法，其特征在于，所述方法还包括：
    所述第一终端设备通过无线资源控制RRC消息接收以下的一项或多项信息：
    所述第一DCI格式信息、用于指示所述第一RNTI的信息、用于指示所述第一DCI的时域位置相对于下一个DRX激活期的时间提前量的信息。
  13. 一种通信装置，其特征在于，所述装置包括：
    收发模块，用于向第一终端设备发送第一DCI格式信息，所述第一DCI格式信息包含于第一DCI格式集合，所述第一DCI格式集合包括N个DCI格式信息，所述N个DCI格式信息分别对应N个不同的终端设备的数据传输功能，所述N为正整数；
    处理模块，用于根据所述第一DCI格式信息通过所述收发模块向所述第一终端设备发送第一DCI。
  14. 根据权利要求13所述的装置，其特征在于，所述数据传输功能包括以下的一项或多项：
    是否在非连续接收DRX激活期唤醒、在DRX激活期之前是否配置信道状态信息CSI测量和上报功能、带宽部分BWP切换方案、DRX激活期中接收天线数量的配置方案、DRX激活期中的跨子帧调度方案、DRX激活期中的物理下行控制信道跳过PDCCH skipping方案。
  15. 根据权利要求13或14所述的装置，其特征在于，所述第一DCI包括M个信息块，所述M为正整数；所述第一DCI格式信息中包括用于指示以下一项或多项的指示信息：
    所述第一终端设备对应的信息块在所述M个信息块中的索引；或者，
    所述第一DCI的长度；或者，
    所述信息块的长度。
  16. 根据权利要求13至15中任一项所述的装置，其特征在于，所述收发模块还用于：
    向所述第一终端设备发送用于指示第一无线网络临时标识RNTI的信息，所述第一RNTI用于所述第一终端设备接收所述第一DCI，所述第一RNTI与所述第一DCI格式信息对应。
  17. 根据权利要求13至16中任一项所述的装置，其特征在于，所述收发模块发送所 述第一DCI的时域位置位于所述DRX的非激活期，所述收发模块还用于：
    向所述第一终端设备发送用于指示所述第一DCI的时域位置相对于下一个DRX激活期的时间提前量的信息。
  18. 根据权利要求13至17中任一项所述的装置，其特征在于，所述收发模块还用于通过无线资源控制RRC消息发送以下的一项或多项信息：
    所述第一DCI格式信息、用于指示所述第一RNTI的信息、用于指示所述第一DCI的时域位置相对于下一个DRX激活期的时间提前量的信息。
  19. 一种通信装置，其特征在于，所述装置包括：
    收发模块，用于从网络设备接收第一DCI格式信息，所述第一DCI格式信息包含于第一DCI格式集合，所述第一DCI格式集合包括N个DCI格式信息，所述N个DCI格式信息分别对应N个不同的终端设备的数据传输功能，所述N为正整数；
    处理模块，用于根据所述第一DCI格式信息从所述网络设备接收第一DCI。
  20. 根据权利要求19所述的装置，其特征在于，所述数据传输功能包括以下的一项或多项：
    是否在非连续接收DRX激活期唤醒、在激活期之前是否配置信道状态信息CSI测量和上报功能、带宽部分BWP切换方案、DRX激活期中接收天线数量的配置方案、DRX激活期中的跨子帧调度方案、DRX激活期中的物理下行控制信道跳过PDCCH skipping方案。
  21. 根据权利要求19或20所述的装置，其特征在于，所述第一DCI包括M个信息块，所述M为正整数；所述第一DCI格式信息中包括用于指示以下一项或多项的指示信息：
    所述第一终端设备对应的信息块在所述M个信息块中的索引；或者，
    所述第一DCI的长度；或者，
    所述信息块的长度。
  22. 根据权利要求19至21中任一项所述的装置，其特征在于，所述收发模块还用于：
    从所述网络设备接收用于指示第一无线网络临时标识RNTI的信息，所述第一RNTI与所述第一DCI格式信息对应；
    根据所述第一RNTI，接收所述第一DCI。
  23. 根据权利要求19至22中任一项所述的装置，其特征在于，接收所述第一DCI的时域位置位于所述DRX的非激活期，所述收发模块还用于：
    从所述网络设备接收用于指示所述第一DCI的时域位置相对于下一个DRX激活期的时间提前量的信息。
  24. 根据权利要求19至23中任一项所述的装置，其特征在于，所述收发模块还用于通过无线资源控制RRC消息接收以下的一项或多项信息：
    所述第一DCI格式信息、用于指示所述第一RNTI的信息、用于指示所述第一DCI的时域位置相对于下一个DRX激活期的时间提前量的信息。
  25. 一种通信装置，其特征在于，所述装置包括至少一个处理器，所述至少一个处理器与至少一个存储器耦合：
    所述至少一个处理器，用于执行所述至少一个存储器中存储的计算机程序或指令，以使得所述装置执行如权利要求1至6中任一项所述的方法，或者使得所述装置执行如权利要求7至12中任一项所述的方法。
  26. 一种可读存储介质，其特征在于，用于存储指令，当所述指令被执行时，使如权利要求1至6中任一项所述的方法被实现，或者使如权利要求7至12中任一项所述的方法被实现。
  27. 一种通信装置，其特征在于，包括处理器和接口电路；
    所述接口电路，用于接收代码指令并传输至所述处理器；
    所述处理器用于运行所述代码指令以执行如权利要求1至6中任一项所述的方法，或者所述处理器用于运行所述代码指令以执行如权利要求7至12中任一项所述的方法。
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