WO2021000680A1 - Procédé de transmission de coopération et appareil de communication - Google Patents

Procédé de transmission de coopération et appareil de communication Download PDF

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Publication number
WO2021000680A1
WO2021000680A1 PCT/CN2020/093412 CN2020093412W WO2021000680A1 WO 2021000680 A1 WO2021000680 A1 WO 2021000680A1 CN 2020093412 W CN2020093412 W CN 2020093412W WO 2021000680 A1 WO2021000680 A1 WO 2021000680A1
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WIPO (PCT)
Prior art keywords
reference signal
terminal device
channel quality
quality parameter
configuration information
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PCT/CN2020/093412
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English (en)
Chinese (zh)
Inventor
向铮铮
张鹏
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华为技术有限公司
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Publication of WO2021000680A1 publication Critical patent/WO2021000680A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/309—Measuring or estimating channel quality parameters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/309—Measuring or estimating channel quality parameters
    • H04B17/318—Received signal strength
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/309—Measuring or estimating channel quality parameters
    • H04B17/318—Received signal strength
    • H04B17/327—Received signal code power [RSCP]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/309—Measuring or estimating channel quality parameters
    • H04B17/336—Signal-to-interference ratio [SIR] or carrier-to-interference ratio [CIR]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/382—Monitoring; Testing of propagation channels for resource allocation, admission control or handover
    • 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
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
    • H04W72/542—Allocation or scheduling criteria for wireless resources based on quality criteria using measured or perceived quality

Definitions

  • This application relates to the field of communication technology, and in particular to a cooperative transmission method and communication device.
  • terminal equipment and network equipment can communicate through a Uu interface, and the communication links used include uplink and downlink.
  • terminal devices can communicate directly through the PC5 interface, and the communication link used is called the side-link. With the help of the side link between the terminal devices, user-cooperative communication can be carried out.
  • TUE target terminal equipment
  • the TUE can form a user cooperation group with at least one cooperation user equipment (CUE).
  • the base station can send data to the TUE and related CUE, and then the CUE forwards the correctly received data to the TUE through the side link.
  • the TUE performs joint decoding based on the data directly received from the base station and the data received from the CUE, thereby improving Receiving performance.
  • the TUE may not receive data from the base station, but only receive data from the CUE and decode it.
  • the embodiments of the present application provide a cooperative transmission method and a communication device, which are used to determine a CUE for user cooperation and improve the transmission performance of the TUE.
  • an embodiment of the present application provides a cooperative transmission method, which can be applied to a first terminal device, and the method includes: the first terminal device receives a first reference signal from a network device to obtain a measurement value of the first reference signal ; The first terminal device receives the second reference signal from the second terminal device to obtain the measured value of the second reference signal; the first terminal device determines the integrated value according to the measured value of the first reference signal and/or the measured value of the second reference signal A channel quality parameter, where the comprehensive channel quality parameter is used to determine at least one terminal device that performs cooperative transmission with the second terminal device; the first terminal device sends the comprehensive channel quality parameter to the network device or the second terminal device.
  • the first terminal device can send a comprehensive channel quality parameter to the network device or the second terminal device, and the network device or the second terminal device determines to communicate with the second terminal device according to the comprehensive channel quality parameter.
  • At least one terminal device for cooperative transmission Since the comprehensive channel quality parameter is determined according to the measured value of the first reference signal sent by the network device and the measured value of the second reference signal sent by the second terminal device, when determining the cooperative terminal device of the second terminal device, It can comprehensively consider the channel quality between the first terminal device and the network device, and the channel quality between the first terminal device and the second terminal device, so as to improve the effectiveness of cooperative terminal device selection and enhance the second terminal device’s performance. Transmission performance and reliability.
  • the second reference signal is the side link channel state information reference signal SL CSI-RS; the method further includes: the first terminal device receives the first configuration information or the first configuration from the second terminal device Information indicating information, the first configuration information indicating the parameters used to transmit SL CSI-RS; the first terminal device receiving the second reference signal from the second terminal device includes: the first terminal device receiving the SL CSI according to the first configuration information -RS.
  • the second reference signal is a sounding reference signal SRS, which is sent by the second terminal device to the network device; the method further includes: the first terminal device receives the second configuration information or the first configuration information from the network device 2. Indication information of configuration information, where the second configuration information indicates parameters for transmitting SRS; the first terminal device receiving the second reference signal from the second terminal device includes: the first terminal device receives the SRS according to the second configuration information.
  • the second configuration information includes the identifier of the second terminal device.
  • the first reference signal is the channel state information reference signal CSI-RS; the method further includes: the first terminal device receives the third configuration information or the indication information of the third configuration information from the network device, the second The third configuration information indicates the parameters used to transmit the CSI-RS; the first terminal device receiving the first reference signal from the network device includes: the first terminal device receives the CSI-RS according to the third configuration information.
  • the first reference signal and the second reference signal may have multiple possible implementation modes.
  • the first reference signal may be the CSI-RS sent by the network device via the downlink
  • the second reference signal may be the SL CSI-RS sent by the second terminal device via the side link.
  • the first terminal device may The received CSI-RS and SL CSI-RS respectively determine the channel quality on the downlink and side link, thereby helping to decide whether the first terminal device can act as a cooperative terminal device of the second terminal device.
  • the first reference signal may be a CSI-RS sent by the network device through the downlink
  • the second reference signal may be multiplexed with the SRS sent by the second terminal device to the network device through the uplink.
  • the second terminal device There is no need to send the SL CSI-RS to the first terminal device on the side link, or even the additional configuration of the SL CSI-RS, thereby further reducing the signaling overhead of the side link.
  • the first terminal device since the first terminal device needs to listen to the SRS sent by the second terminal device to the network device, when the network device notifies the first terminal device of the SRS configuration of the second terminal device, it can also configure The information carries the identifier of the second terminal device, so that the first terminal device can listen to the SRS sent by the second terminal device instead of the SRS of other terminal devices, thereby improving cooperative transmission efficiency.
  • the method before the first terminal device sends the comprehensive channel quality parameter to the network device or the second terminal device, the method further includes: the first terminal device determines that the measured value of the first reference signal is greater than or equal to the first threshold, and Or the measured value of the second reference signal is greater than or equal to the second threshold; and/or, the first terminal device determines that the integrated channel quality parameter is greater than or equal to the third threshold.
  • the measured value of the first reference signal, the measured value of the second reference signal, and the integrated channel quality parameter can all have corresponding thresholds, and the first terminal device can determine the measured value of the first reference signal. Or when the measured value of the second reference signal is less than the corresponding threshold, or when the determined integrated channel quality parameter is less than the corresponding threshold, the integrated channel quality parameter is not sent.
  • the first terminal device sends a comprehensive channel quality parameter to the network device or the second terminal device, it means that the channel quality between the first terminal device and the network device and the second terminal device is better, which can make the first terminal device have better channel quality.
  • the comprehensive channel quality parameters sent by the terminal equipment have more reference value. This improves the effectiveness of determining cooperative terminal devices.
  • the method further includes: the first terminal device receives first indication information from the network device, the first indication information indicating the difference between the transmission power of the first reference signal and the transmission power of the second reference signal Difference; thus, the first terminal device determines the comprehensive channel quality parameter according to the measured value of the first reference signal and/or the measured value of the second reference signal, which may include: the first terminal device according to the measured value of the first reference signal, The measured value of the second reference signal and the difference value determine the integrated channel quality parameter.
  • the first terminal device may also consider the transmission power of the network device to send the first reference signal when determining the comprehensive channel quality parameter, and the transmission power of the second terminal device to send the second reference signal. Therefore, the comprehensive channel quality parameter determined by the first terminal device is more accurate, thereby determining a more suitable cooperative terminal device for the second terminal device, and improving the cooperative transmission performance.
  • the network device can indicate the difference of the transmit power to the first terminal device, which can also make the embodiments of this application applicable to scenarios where the transmit powers of the first reference signal and the second reference signal are different, so that this application can be implemented Cases are more adaptable.
  • the method further includes: the first terminal device receives second indication information from the network device, the second indication information instructing the first terminal device to send a comprehensive channel quality parameter to the network device or the second terminal device.
  • the network device can decide whether the first terminal device can be a cooperative terminal device of the second terminal device, or the second terminal device can decide whether the first terminal device can be the second terminal device itself. Cooperative terminal equipment of the device. Therefore, the network device can indicate to the first terminal device to whom the comprehensive channel quality parameter needs to be sent. In other words, when the network device is responsible for the decision-making cooperation terminal device, the first terminal device can send the comprehensive channel quality parameter to the network device, and when the second terminal device is responsible for the decision-making cooperation terminal device, the first terminal device can send the comprehensive channel quality The parameters are sent to the second terminal device.
  • the integrated channel quality parameter is a function of the measured value of the first reference signal and/or the measured value of the second reference signal; in this way, the first terminal device determines the integrated channel quality parameter, which may include: The terminal device determines the integrated channel quality parameter according to the measured value of the first reference signal and/or the measured value of the second reference signal and the function.
  • ⁇ i is a comprehensive channel quality parameter
  • ⁇ i is a measurement value of the first reference signal
  • S_ ⁇ i is a measurement value of the second reference signal
  • ⁇ i is a weight value and 0 ⁇ i ⁇ 1.
  • the measured value is any one of reference signal received power RSRP, received signal strength indicator RSSI, reference signal received quality RSSQ, and channel noise to interference ratio SINR, thereby improving the applicability of the embodiments of the present application.
  • the first terminal device may also send the measured value of the first reference signal and/or the measured value of the second reference channel directly to the network device or the second terminal device, and the network device or the second terminal device According to the measured value of the first reference signal and/or the measured value of the second reference channel, the device uses the above method to determine the integrated channel quality parameter by itself, and then determines the terminal device for cooperative transmission with the second terminal device.
  • the embodiments of the present application provide another cooperative transmission method, which can be applied to a network device, and the method includes: the network device sends a first reference signal to a first terminal device; the network device receives integrated transmission from the first terminal device The channel quality parameter, the comprehensive channel quality parameter is determined by the first terminal device according to the measured value of the first reference signal and/or the measured value of the second reference signal, the second reference signal being received by the first terminal device from the second terminal device A reference signal; the network device determines at least one terminal device for cooperative transmission with the second terminal device according to the comprehensive channel quality parameter.
  • the comprehensive channel quality parameter is determined by the first terminal device according to the measured value of the first reference signal sent by the network device and the measured value of the second reference signal sent by the second terminal device. Therefore, when the network device determines at least one terminal device for cooperative transmission with the second terminal device according to the comprehensive channel quality parameter, it can comprehensively consider the channel quality between the first terminal device and the network device, the first terminal device and the second terminal device. There are two factors of channel quality between terminal devices, thereby improving the effectiveness of cooperative terminal device selection and enhancing the transmission performance and reliability of the second terminal device.
  • the second reference signal is the side link channel state information reference signal SL CSI-RS; the method further includes: the network device sends the first configuration information or the first configuration information to the second terminal device Indication information, the first configuration information indicates parameters used to transmit SL CSI-RS.
  • the second reference signal is a sounding reference signal SRS; the method further includes: the network device sends the second configuration information or the second configuration information indication information to the first terminal device and the second terminal device, and The second configuration information indicates the parameters used to transmit SRS.
  • the second configuration information includes the identifier of the second terminal device.
  • the first reference signal is a channel state information reference signal CSI-RS; the method further includes: the network device sends third configuration information or indication information of the third configuration information to the first terminal device, the second Third, the configuration information indicates the parameters used to transmit CSI-RS.
  • the first reference signal and the second reference signal may have multiple possible implementation modes.
  • the first reference signal may be the CSI-RS sent by the network device via the downlink
  • the second reference signal may be the SL CSI-RS sent by the second terminal device via the side link.
  • the first terminal device may The received CSI-RS and SL CSI-RS respectively determine the channel quality on the downlink and side link, thereby helping to decide whether the first terminal device can act as a cooperative terminal device of the second terminal device.
  • the first reference signal may be a CSI-RS sent by the network device through the downlink
  • the second reference signal may be multiplexed with the SRS sent by the second terminal device to the network device through the uplink.
  • the second terminal device There is no need to send the SL CSI-RS to the first terminal device on the side link, or even the additional configuration of the SL CSI-RS, thereby further reducing the signaling overhead of the side link.
  • the first terminal device since the first terminal device needs to listen to the SRS sent by the second terminal device to the network device, when the network device notifies the second terminal device of the SRS configuration, it may also carry the first terminal device in the configuration information.
  • the identification of the terminal device so that the first terminal device can listen to the SRS sent by the second terminal device instead of the SRS of other terminal devices, thereby improving the efficiency of cooperative transmission.
  • the method further includes: the network device sends first indication information to the first terminal device, where the first indication information is used to indicate the difference between the transmission power of the first reference signal and the transmission power of the second reference signal. The deviation between.
  • the first terminal device may also consider the transmission power of the network device to send the first reference signal when determining the comprehensive channel quality parameter, and the transmission power of the second terminal device to send the second reference signal. Therefore, the comprehensive channel quality parameter determined by the first terminal device is more accurate, thereby determining a more suitable cooperative terminal device for the second terminal device, and improving the cooperative transmission performance.
  • the network device can indicate the difference of the transmit power to the first terminal device, which can also make the embodiments of this application applicable to scenarios where the transmit powers of the first reference signal and the second reference signal are different, so that this application can be implemented Cases are more adaptable.
  • the method further includes: the network device sends second indication information to the first terminal device, the second indication information instructing the first terminal device to send the comprehensive channel quality parameter to the network device or the second terminal device.
  • the network device can decide whether the first terminal device can be a cooperative terminal device of the second terminal device, or the second terminal device can decide whether the first terminal device can be the second terminal device itself. Cooperative terminal equipment of the device. Therefore, the network device can indicate to the first terminal device to whom the comprehensive channel quality parameter needs to be sent. In other words, when the network device is responsible for the decision-making cooperation terminal device, the first terminal device can send the comprehensive channel quality parameter to the network device, and when the second terminal device is responsible for the decision-making cooperation terminal device, the first terminal device can send the comprehensive channel quality The parameters are sent to the second terminal device.
  • the integrated channel quality parameter is a function of the measured value of the first reference signal and the measured value of the second reference signal.
  • ⁇ i is a comprehensive channel quality parameter
  • ⁇ i is a measurement value of the first reference signal
  • S_ ⁇ i is a measurement value of the second reference signal
  • ⁇ i is a weight value and 0 ⁇ i ⁇ 1.
  • the measured value is any one of reference signal received power RSRP, received signal strength indicator RSSI, reference signal received quality RSSQ, and channel noise to interference ratio SINR, thereby improving the applicability of the embodiments of the present application.
  • the network device may also receive the measured value of the first reference signal and/or the measured value of the second reference channel directly sent by the first terminal device, and then according to the measured value of the first reference signal and/or For the measurement value of the second reference channel, the comprehensive channel quality parameter is determined by the above method, and then the terminal device that performs cooperative transmission with the second terminal device is determined.
  • the embodiments of the present application provide yet another cooperative transmission method, which can be applied to a second terminal device.
  • the method includes: the second terminal device sends a second reference signal to the first terminal device;
  • the first terminal device receives the comprehensive channel quality parameter, which is determined by the first terminal device according to the measured value of the first reference signal and/or the measured value of the second reference signal, the first reference signal being the first terminal device A reference signal received from a network device;
  • the second terminal device determines at least one terminal device for cooperative transmission with the second terminal device according to the comprehensive channel quality parameter.
  • the comprehensive channel quality parameter is determined by the first terminal device according to the measured value of the first reference signal sent by the network device and the measured value of the second reference signal sent by the second terminal device, Therefore, when the second terminal device determines at least one terminal device for cooperative transmission with the second terminal device according to the comprehensive channel quality parameter, it can comprehensively consider the channel quality between the first terminal device and the network device, and the first terminal device and There are two factors of channel quality between the second terminal devices, thereby improving the effectiveness of cooperative terminal device selection and enhancing the transmission performance and reliability of the second terminal device.
  • the second reference signal is a side link channel state information reference signal SL CSI-RS; the method further includes: the second terminal device receives the first configuration information or the first configuration information from the network device Indication information, the first configuration information indicates parameters used to transmit SL CSI-RS.
  • the second reference signal is an uplink sounding reference signal SRS; the method further includes: the network device sends the second configuration information or the indication information of the second configuration information to the second terminal device, the second configuration information Indicates the parameters used to transmit SRS.
  • the second configuration information includes the identifier of the second terminal device.
  • the first reference signal is a channel state information reference signal CSI-RS.
  • the first reference signal and the second reference signal may have multiple possible implementation modes.
  • the first reference signal may be the CSI-RS sent by the network device via the downlink
  • the second reference signal may be the SL CSI-RS sent by the second terminal device via the side link.
  • the first terminal device may The received CSI-RS and SL CSI-RS respectively determine the channel quality on the downlink and side link, thereby helping to decide whether the first terminal device can act as a cooperative terminal device of the second terminal device.
  • the first reference signal may be a CSI-RS sent by the network device through the downlink
  • the second reference signal may be multiplexed with the SRS sent by the second terminal device to the network device through the uplink.
  • the second terminal device There is no need to send the SL CSI-RS to the first terminal device on the side link, or even the additional configuration of the SL CSI-RS, thereby further reducing the signaling overhead of the side link.
  • the first terminal device since the first terminal device needs to listen to the SRS sent by the second terminal device to the network device, when the network device notifies the second terminal device of the SRS configuration, it may also carry the first terminal device in the configuration information.
  • the identification of the terminal device so that the first terminal device can listen to the SRS sent by the second terminal device instead of the SRS of other terminal devices, thereby improving the efficiency of cooperative transmission.
  • the integrated channel quality parameter is a function of the measured value of the first reference signal and the measured value of the second reference signal.
  • ⁇ i is a comprehensive channel quality parameter
  • ⁇ i is a measurement value of the first reference signal
  • S_ ⁇ i is a measurement value of the second reference signal
  • ⁇ i is a weight value and 0 ⁇ i ⁇ 1.
  • the measured value is any one of reference signal received power RSRP, received signal strength indicator RSSI, reference signal received quality RSSQ, and channel noise to interference ratio SINR, thereby improving the applicability of the embodiments of the present application.
  • the second terminal device may also receive the measured value of the first reference signal and/or the measured value of the second reference channel directly sent by the first terminal device, and then according to the measured value of the first reference signal and /Or the measured value of the second reference channel, the comprehensive channel quality parameter is determined by the above method, and then the terminal device for cooperative transmission with the second terminal device is determined.
  • an embodiment of the present application provides a communication device that has the function of the first terminal device in any possible design of the first aspect or the first aspect, or has the function of the third aspect or The function of the second terminal device in any possible design of the third aspect.
  • the communication device may be a terminal device, such as a handheld terminal device, a vehicle-mounted terminal device, etc., or a device included in the terminal device, such as a chip, or a device including a 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 above-mentioned second aspect or any design of the second aspect, or perform the corresponding function in the above-mentioned third aspect or any design of the third aspect.
  • the transceiver module is used to support communication between the communication device and other communication devices. For example, when the communication device is a first terminal device, it can receive a first reference signal from a network device and a second reference signal from a second 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 the computer program instructions stored in the memory, so that the communication device executes the method in any possible design of the first aspect or the first aspect, or executes the second aspect or the second aspect.
  • 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 instruction, when the program or instruction is executed by the processor , So that the chip system implements any possible design method in the first aspect, or implements any possible design method in the second aspect, or implements any possible design in the third aspect. Method in design.
  • 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.
  • embodiments of the present application provide a computer-readable storage medium that 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 foregoing second aspect, or the method in any possible design of the foregoing third aspect.
  • 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 The method in any possible design of the second aspect, or the method in any possible design of the foregoing third aspect.
  • an embodiment of the present application provides a communication system, which includes the network device, the first terminal device, and the second terminal device.
  • Figures 1a and 1b are schematic diagrams 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 cooperative transmission method provided by an embodiment of the application
  • FIG. 3 is a schematic diagram of a cooperative transmission process when the first reference signal is CSI-RS and the second reference signal is SL CSI-RS in an embodiment of this application;
  • FIG. 4 is a schematic diagram of a cooperative transmission process when the first reference signal is CSI-RS and the second reference signal is SRS in an embodiment of this application;
  • Fig. 5 is a plurality of potential CUEs in a user cooperation group provided in 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 the 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
  • the embodiments of this application can also be applied to the evolved universal mobile telecommunications system terrestrial radio access network (E-UTRAN) system, or the next generation (NG)-RAN
  • E-UTRAN evolved universal mobile telecommunications system terrestrial radio access network
  • NG next generation
  • the system can also be applied to next-generation communication systems or similar communication systems.
  • FIG. 1a and FIG. 1b are schematic diagrams 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 120, a terminal device 130, and a terminal device 140.
  • the terminal device 120, the terminal device 130, and the terminal device 140 belong to a user cooperation group, the terminal device 120 is a TUE in the user cooperation group, and the terminal device 130 and the terminal device 140 are CUEs in the user cooperation group.
  • cooperative transmission includes two stages.
  • the network device 110 sends data to the terminal device 120, the terminal device 130, and the terminal device 140, for example, in the form of multicast.
  • the terminal device 130 and the terminal device 140 respectively send the received data to the terminal device 120 via the side link.
  • the terminal device 130 and the terminal device 140 may also perform processing such as amplifying, decoding, and compressing the data, which is not limited in this application. In this way, the terminal device 120 can jointly decode the data received from the network device 110 in the first stage and the data received from the terminal device 130 and the terminal device 140 in the second stage, thereby improving reception performance.
  • cooperative transmission also includes two stages.
  • the network device 110 sends data to the terminal device 130 and the terminal device 140. Because the terminal device 120 is outside the cell coverage or the channel quality of the terminal device 120 is too poor, the terminal device 120 does not receive data from the network device 110 in the first stage. Only in the second stage, the forwarded data is received from the terminal device 130 and the terminal device 140 for joint decoding.
  • the network devices in Figure 1a and Figure 1b may be access network devices, such as base stations.
  • the access network device corresponding to the different devices in different systems for example, in the fourth generation mobile communication technology (the 4 th generation, 4G) systems may correspond evolved base station (Evolutional Node B, eNB), in a system 5G It can correspond to 5G access network equipment, such as gNB.
  • eNB evolved base station
  • 5G access network equipment such as gNB.
  • the user cooperation group in FIGS. 1a and 1b may include the terminal device 120, the terminal device 130, and the terminal device 140, or may only include the terminal device 120 and the terminal device 130.
  • a TUE in a user cooperation group, can have one or more CUEs serving it.
  • a terminal device it can be a TUE of a user cooperative group centered on itself, or a CUE of one or more other user cooperative groups.
  • the terminal device 120, the terminal device 130, and the terminal device 140 shown in FIG. 1a and FIG. 1b are only an example.
  • the network device may provide services for multiple terminal devices. The number is not specifically limited.
  • the terminal devices in FIG. 1a and FIG. 1b are shown by taking a mobile phone as an example, but the application is not limited to this, and the terminal device may also be other types of terminal devices, such as vehicle-mounted terminal devices or vehicles.
  • the embodiments of the present application are not limited to 4G or 5G systems, and are also applicable to subsequent evolved communication systems.
  • 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, etc.
  • 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 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 methods provided in the embodiments 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 to 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), or It can also include the next generation node B (gNB) in the new radio (NR) system of the fifth generation mobile communication technology (5G), or it can also include the transmission reception point.
  • 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), or It can also include the next generation node B (gNB) in the new radio (NR) system of the fifth generation mobile communication technology (5G), or it can also include the transmission reception point.
  • LTE long term evolution
  • LTE-A evolved LTE system
  • gNB next generation node B
  • NR new radio
  • TRP home base station
  • BBU baseband unit
  • WiFi access point access point, AP
  • CU home evolved NodeB
  • DU distributed unit
  • 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.
  • “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. "And/or" describes the association relationship of the associated objects.
  • a and/or B can mean: A alone exists, A and B exist at the same time, and B exists alone.
  • the character "/”, unless otherwise specified, generally indicates that the associated objects before and after are in an "or" relationship.
  • FIG. 2 is a schematic flowchart of a cooperative transmission method provided by an embodiment of this application.
  • the method includes the following steps S201 to S206:
  • Step S201 The network device sends a first reference signal to the first terminal device.
  • the first terminal device is a potential cooperative terminal device CUE.
  • the network device may send the first reference signal to the first terminal device, so that the first terminal device reports the channel quality between itself and the network device.
  • the channel quality between the first terminal device and the network device can be used to determine whether the first terminal device can be used as a cooperative terminal device of the second terminal device.
  • the first reference signal may be a channel state information reference signal (channel state information reference signal, CSI-RS).
  • the network device may configure the first reference signal for the first terminal device. For example, the network device may send first configuration information or indication information of the first configuration information to the first terminal device, where the first configuration information indicates the parameters used to transmit the CSI-RS, so that the first terminal device can follow the first
  • the configuration information receives CSI-RS from the network device.
  • the parameters for transmitting CSI-RS may include, for example, time-frequency resources occupied by the CSI-RS.
  • Step S202 The first terminal device receives the first reference signal from the network device, and obtains a measurement value of the first reference signal.
  • the first terminal device may receive and measure the first reference signal from the network device, and the measurement value of the first reference signal may reflect the channel quality between the first terminal device and the network device.
  • the measured value can be reference signal received power (RSRP), received signal strength indicator (RSSI), reference signal received quality (RSSQ), channel noise to interference ratio (signal) -to-noise and interference ratio, SINR), any one of path loss.
  • RSRP reference signal received power
  • RSSI received signal strength indicator
  • RSSQ reference signal received quality
  • SINR channel noise to interference ratio
  • SINR channel noise to interference ratio
  • Step S203 The second terminal device sends a second reference signal to the first terminal device.
  • the second terminal device is the target terminal device TUE, that is, a terminal device that requires other terminal devices to cooperate in data transmission.
  • the second terminal device may send the second reference signal to the first terminal device, so that the first terminal device reports the channel quality between itself and the second terminal device.
  • the channel quality between the first terminal device and the second terminal device can be used to determine whether the first terminal device can serve as a cooperative terminal device of the second terminal device.
  • the second reference signal may be a sidelink channel state information reference signal (SL CSI-RS).
  • the network device may configure the SL CSI-RS for the second terminal device. For example, the network device may send the first configuration information or the indication information of the first configuration information to the second terminal device, and the first configuration information is used to indicate the parameters of the SL CSI-RS transmission, so that the second terminal device can send the second reference signal. Subsequently, the second terminal device may forward the first configuration information or the first configuration information to the first terminal device, so that the first terminal device receives the second reference signal sent by the second terminal device.
  • the parameters for transmitting the SL CSI-RS may include, for example, time-frequency resources occupied by the SL CSI-RS.
  • the second reference signal may be a sounding reference signal (sounding reference signal, SRS).
  • SRS sounding reference signal
  • the SRS is a reference signal sent by the second terminal device to the network device for the network device to measure the uplink channel, and the network device can configure the SRS for the second terminal device.
  • the network device may also notify the first terminal device of the SRS configured for the second terminal device.
  • the network device may send the second configuration information or the indication information of the second configuration information to the first terminal device and the second terminal device, where the second configuration information indicates the parameters used to transmit the SRS.
  • the parameters for transmitting the SRS may include, for example, time-frequency resources occupied by the SRS.
  • the second configuration information may also include an identifier of the second terminal device, and the identifier of the second terminal device may be a cell radio network temporary identifier (C-RNTI) of the second terminal device, Used for the first terminal device to identify that the SRS received according to the foregoing second configuration information is from the second terminal device.
  • C-RNTI cell radio network temporary identifier
  • Step S204 The first terminal device receives the second reference signal from the second terminal device, and obtains the measured value of the second reference signal.
  • the first terminal device may receive and measure the second reference signal from the second terminal device, and the measurement value of the second reference signal may reflect the channel quality between the first terminal device and the second terminal device.
  • the measurement value can be any of RSRP, RSSI, RSSQ, and SINR.
  • the RSSI, RSSQ, and SINR are similar.
  • Step S205 The first terminal device determines an integrated channel quality parameter according to the measured value of the first reference signal and/or the measured value of the second reference signal, and the integrated channel quality parameter is used to determine at least the amount of coordinated transmission with the second terminal device.
  • a terminal device determines an integrated channel quality parameter according to the measured value of the first reference signal and/or the measured value of the second reference signal, and the integrated channel quality parameter is used to determine at least the amount of coordinated transmission with the second terminal device.
  • the integrated channel quality parameter is a function of the measured value of the first reference signal and/or the measured value of the second reference signal, so it can reflect the relationship between the first terminal device and the network device, and between the first terminal device and the second terminal device.
  • the overall channel quality between devices. Determining the cooperative terminal device of the second terminal device according to the comprehensive channel quality parameter can ensure that the cooperative terminal device and the network device and the second terminal device have good channel quality, thereby effectively improving the transmission performance of user cooperation.
  • the network device may configure the functional relationship between the integrated channel quality parameter and the measured value of the first reference signal and the measured value of the second reference signal, so that the first terminal device can calculate the integrated channel quality according to the functional relationship. parameter.
  • the network device may send fourth configuration information to the first terminal device, where the fourth configuration information is used to indicate the functional relationship between the integrated channel quality parameter and the measured value of the first reference signal and the measured value of the second reference signal.
  • the fourth configuration information may be physical layer configuration signaling or medium access control (MAC) signaling, or radio resource control (RRC) control signaling.
  • MAC medium access control
  • RRC radio resource control
  • the integrated channel quality parameter is positively correlated with the measured value of the first reference signal and the measured value of the second reference signal, the larger the integrated channel quality parameter determined by the first terminal device is, the more suitable the first terminal device is 2.
  • Cooperative terminal equipment of terminal equipment Conversely, if the integrated channel quality parameter is negatively correlated with the measured value of the first reference signal and the measured value of the second reference signal, the smaller the integrated channel quality parameter determined by the first terminal device is, the more suitable the first terminal device is A cooperative terminal device as a second terminal device.
  • the network device may notify the first terminal device of the above-mentioned first reference signal The difference between the transmit power of and the transmit power of the second reference signal.
  • the network device may send first indication information to the first terminal device, where the first indication information indicates the difference between the transmission power of the first reference signal and the transmission power of the second reference signal.
  • the network device may also notify the first terminal device of the transmission power of the first reference signal, and the second terminal device notifies the first terminal device of the transmission power of the second reference signal, and the first terminal device determines the first reference signal by itself. The difference between the transmission power of the signal and the transmission power of the second reference signal.
  • the first terminal device may correct the measured value of the first reference signal and the measured value of the second reference signal according to the difference between the transmit power of the first reference signal and the transmit power of the second reference signal, and then correct The corrected measurement value of the first reference signal and the measurement value of the second reference signal determine the integrated channel quality parameter. If the measured value of the first reference signal is ⁇ and the measured value of the second reference signal is ⁇ s , the difference between the transmission power of the first reference signal and the transmission power of the second reference signal is A, which means the second reference The transmission power of the signal is smaller than the transmission power of the first reference signal by A, then after correction, the measured value of the first reference signal is ⁇ , and the measured value of the second reference signal is ⁇ s +A.
  • the first terminal device can substitute ⁇ and ⁇ s +A into the above-mentioned functional relationship, thereby obtaining a comprehensive channel quality parameter.
  • the network device can configure corresponding thresholds for the measured value of the first reference signal, the measured value of the second reference signal, and the integrated channel quality parameter, where the measured value of the first reference signal corresponds to The threshold is the first threshold, the threshold corresponding to the measured value of the second reference signal is the second threshold, and the threshold corresponding to the comprehensive channel quality parameter is the third threshold.
  • the first terminal device is sending the comprehensive channel quality parameter to the network device or the second terminal device Before, it can also be determined that the measured value of the first reference signal is greater than or equal to the first threshold, and/or the measured value of the second reference signal is greater than or equal to the second threshold; and/or, the first terminal device determines that the integrated channel quality parameter is greater than or equal to the first threshold.
  • the first terminal device may send the integrated signal to the network device or the second terminal device when the measured value of the first reference signal is greater than or equal to the first threshold, and the measured value of the second reference signal is greater than or equal to the second threshold.
  • Channel quality parameters may be sent.
  • the first terminal device may send the comprehensive channel quality parameter to the network device or the second terminal device when the determined comprehensive channel quality parameter is greater than or equal to the third threshold.
  • the first terminal device may be in the case where the measured value of the first reference signal is greater than or equal to the first threshold, the measured value of the second reference signal is greater than or equal to the second threshold, and the determined integrated channel quality parameter is greater than or equal to the third threshold
  • the first terminal device may only determine the integrated channel quality parameter according to the above functional relationship when the measured value of the first reference signal is greater than or equal to the first threshold, and the measured value of the second reference signal is greater than or equal to the second threshold, Otherwise, the comprehensive channel quality parameter is not calculated, and the comprehensive channel quality parameter is not sent to the network device or the second terminal device.
  • the measurement value may also be the path loss, but the path loss is negatively correlated with the channel quality. That is, the smaller the path loss of the CSI-RS, the better the channel quality between the first terminal device and the network device.
  • the first terminal device is sending the comprehensive channel quality parameter to the network device or the second terminal device Before, it can also be determined that the measured value of the first reference signal is less than or equal to the first threshold, and/or the measured value of the second reference signal is less than or equal to the second threshold; and/or, the first terminal device determines that the integrated channel quality parameter is greater than or equal to the first threshold.
  • Step S206 The first terminal device sends the comprehensive channel quality parameter to the network device or the second terminal device.
  • the first terminal device may send the integrated channel quality parameter through physical layer signaling, and may also send the integrated channel quality parameter through MAC layer signaling or RRC layer signaling, which is not limited in this application. Moreover, any indication information or any configuration process involved in the embodiments of the present application can be sent or configured through physical layer signaling, MAC layer signaling, or RRC layer signaling, which will not be described in detail below.
  • the second terminal device is a TUE
  • the first terminal device is a potential CUE of the second terminal device.
  • Each potential CUE can be used as the first terminal device.
  • it receives CSI-RS from the network device and SL CSI-RS from the TUE, and then according to the measured RSRP and SL of the CSI-RS
  • the RSRP of the CSI-RS calculates the integrated channel quality parameter, and sends the integrated channel quality parameter to the network device or the second terminal device.
  • the network equipment can select the final CUE from one or more potential CUEs for the TUE, and the TUE itself can also select the final CUE from the potential one or more CUEs. Therefore, in step S206, the comprehensive channel quality parameter determined by the first terminal device may be sent to the network device, or may be sent to the second terminal device.
  • the network device can decide whether the first terminal device can serve as the CUE of the TUE, or the TUE can decide whether the first terminal device can serve as its own CUE. Therefore, the network device may send the second indication information to each potential CUE, in which the second indication information indicates whether to send the comprehensive channel quality parameter to the network device or the TUE.
  • each potential CUE can send comprehensive channel quality parameters to the network equipment, and the network equipment can then send comprehensive channel quality parameters to the network equipment according to the comprehensive channel quality parameters of each potential CUE. And the number of CUEs that needs to be determined, and one or more CUEs are selected from each potential CUE. If the larger the value of the comprehensive channel quality parameter, the better the channel quality between the potential CUE and the network equipment and TUE, and the network equipment needs to select n final CUEs, then the network equipment can select a comprehensive one from each potential CUE The first n UEs with larger channel quality parameters serve as the final CUE.
  • the network device may configure the CSI-RS resource for the first terminal device, and the first terminal device calculates the functional relationship of the integrated channel quality parameter.
  • the network device may also configure resources for sending SL CSI-RS for the second terminal device.
  • the network device sends the CSI-RS to the first terminal device, the second terminal device sends the SL CSI-RS to the first terminal device, and the first terminal device determines and sends the comprehensive channel quality to the network device according to the functional relationship configured by the network device parameter.
  • the network device may configure SRS for the second terminal device
  • the network device may configure CSI-RS for the first terminal device, configure the function of the comprehensive channel quality parameter for the first terminal device, and send the first terminal device to the first terminal device.
  • the configuration of SRS of terminal equipment can detect the SRS sent by the second terminal device to the network device, and determine the channel quality between the first terminal device and the second terminal device according to the detected SRS sent by the second terminal device.
  • the network device sends a CSI-RS to the first terminal device
  • the second terminal device sends an SRS to the network device
  • the first terminal device listens to the SRS configuration of the second terminal device sent by the network device. SRS, thereby determining and sending comprehensive channel quality parameters to network equipment.
  • the embodiment of the present application does not specifically limit the order in which the first terminal device receives the first reference signal from the network device and the first terminal device receives the second reference signal from the second terminal device.
  • the first terminal device may first receive and measure the first reference signal to obtain the measured value of the first reference signal, or may first receive and measure the second reference signal to obtain the measured value of the second reference signal.
  • the first terminal device may also directly send the measured value of the first reference signal and/or the measured value of the second reference signal obtained from step S202 and step S204 to the network device or the second
  • the network device or the second terminal device determines the comprehensive channel quality parameters by itself in the above-mentioned manner, and then determines the cooperative terminal device of the second terminal device.
  • the second indication information may also be used to indicate whether the first terminal device sends the measured value of the first reference signal and/or the measured value of the second reference signal to the network device or to the second terminal device, so that Reduce the processing load of the first terminal device and improve the efficiency of cooperative transmission.
  • the first terminal device can send a comprehensive channel quality parameter to the network device or the second terminal device, and the network device or the second terminal device determines to communicate with the second terminal device according to the comprehensive channel quality parameter.
  • At least one terminal device for cooperative transmission Since the comprehensive channel quality parameter is determined according to the measured value of the first reference signal sent by the network device and the measured value of the second reference signal sent by the second terminal device, it can consider the relationship between the first terminal device and the network device.
  • the channel quality and the channel quality between the first terminal device and the second terminal device are two factors that determine the cooperative terminal device of the second terminal device, thereby improving the effectiveness of cooperative terminal device selection and enhancing the transmission performance of the second terminal device And reliability.
  • FIG. 6 is a schematic structural diagram of a communication device provided in an embodiment of this 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 the first terminal device or the second terminal device 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 be a chip included in the terminal device, or a device including terminal devices, such as various types of vehicles; the communication device may also It may be other combination devices, components, etc., having the above-mentioned terminal device functions.
  • the transceiver module may be a transceiver, which may include an antenna and a radio frequency circuit, etc., and the processing module may be a processor, such as a central processing unit (CPU).
  • the transceiver module may be a radio frequency unit, and the processing module may be a processor.
  • the transceiver module may be an input/output interface of the chip system, and the processing module may be a processor of the chip system.
  • the transceiver module 610 is configured to receive the first reference signal from the network device, obtain the measurement value of the first reference signal, and obtain the measurement value of the first reference signal from the network device.
  • the terminal device receives the second reference signal to obtain the measurement value of the second reference signal;
  • the processing module 620 is configured to perform the operation of determining the integrated channel quality parameter according to the measurement value of the first reference signal and/or the measurement value of the second reference signal operating.
  • the transceiver module 610 is configured to send the second reference signal to the first terminal device and receive the integrated channel quality sent by the first terminal device.
  • Parameter operation; the processing module 620 is configured to perform an operation of determining whether the first terminal device can be a cooperative terminal device of the second terminal device according to the received comprehensive channel quality parameter.
  • the processing module 620 involved in the communication device may be implemented by a processor or processor-related circuit components, and the 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 implement the corresponding processes of the methods shown in FIG. 2, FIG. 3, and FIG. 4, respectively.
  • the transceiver module 610 can be used to perform step S202, step S203, and step S206, and the processing module 610 can be used to perform step S205.
  • the processing module 610 can be used to perform step S205.
  • I will not list them all here.
  • 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 terminal device. It is easy to understand and easy to illustrate.
  • the terminal device uses a mobile phone as an example.
  • the terminal equipment 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.
  • FIG. 7 only one memory and processor are shown in FIG. 7. 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 710 and a processing unit 720.
  • 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 710 can be regarded as the receiving unit, and the device for implementing the sending function in the transceiver unit 710 as the sending unit, that is, the transceiver unit 710 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 710 is configured to perform the sending and receiving operations on the terminal device side in the foregoing method embodiment
  • processing unit 720 is configured to perform other operations on the terminal device in the foregoing method embodiment except for the transceiving operation.
  • the embodiment of the present application also provides another communication device.
  • FIG. 8 is a schematic structural diagram of another communication device provided in 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 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, and the communication device may also be other combination devices or components having the functions of the above-mentioned network device.
  • the transceiver module may be a transceiver, which may include an antenna and a radio frequency circuit, etc., and the processing module may be a processor, such as a central processing unit (CPU).
  • the transceiver module may be a radio frequency unit, and the processing module may be a processor.
  • the transceiver module may be an input/output interface of the chip system, and the processing module may be a processor of the chip system.
  • the transceiver module 810 is configured to send the second reference signal to the first terminal device and receive the comprehensive channel quality parameter sent by the first terminal device
  • the processing module 820 is used to determine whether the first terminal device can be a cooperative terminal device of the second terminal device according to the received comprehensive channel quality parameters.
  • 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 operation and/or function of each module in the communication device is to implement the corresponding processes of the methods shown in FIG. 2, FIG. 3, and FIG. 4, respectively.
  • the communication device is used as a network device, and the transceiver module 810 can be used to perform step S201 and step S206.
  • the transceiver module 810 can be used to perform step S201 and step S206.
  • 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 device 900 includes: one or more radio frequency units, such as a remote radio unit (RRU) 901 and one or more baseband units (BBU) (also referred to as digital units, digital units, DU)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 RRU 901 part is mainly used for receiving and sending radio frequency signals and converting radio frequency signals and baseband signals.
  • the part 902 of the BBU is mainly used to perform baseband processing and control the base station.
  • the RRU 901 and the BBU 902 may be physically set together, or may be physically separated, that is, a distributed base station.
  • the BBU 902 is the control center of the base station, and may also be called a processing unit, which is mainly used to complete baseband processing functions, such as channel coding, multiplexing, modulation, and spreading.
  • the BBU (processing unit) 902 may be used to control the base station to execute the operation procedure of the network device in the foregoing method embodiment.
  • the BBU 902 may be composed of one or more single boards, and multiple single boards may jointly support a radio access network (such as an LTE network) with a single access indication, or may respectively support different access standards. Wireless access network (such as LTE network, 5G network or other networks).
  • the BBU 902 may also include a memory 9021 and a processor 9022, and the memory 9021 is used to store necessary instructions and data.
  • the processor 9022 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 9021 and the processor 9022 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.
  • 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.
  • An embodiment of the present application also provides a communication system, which includes a network device and at least one terminal device.
  • 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 through some interfaces, indirect coupling or communication connection of 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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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Quality & Reliability (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente invention concerne un procédé de transmission de coopération et un appareil de communication, pouvant s'appliquer à l'Internet des véhicules, notamment V2X, LTE-V et V2V. Ledit procédé consiste : à recevoir, par un premier dispositif terminal, un premier signal de référence provenant d'un dispositif de réseau, pour obtenir une valeur de mesure du premier signal de référence et à recevoir un second signal de référence provenant d'un second dispositif terminal, pour obtenir une valeur de mesure du second signal de référence ; à déterminer un paramètre de qualité de canal complet, selon la valeur de mesure du premier signal de référence et/ou la valeur de mesure du second signal de référence ; et à envoyer le paramètre de qualité de canal complet au dispositif de réseau ou au second dispositif terminal, le paramètre de qualité de canal complet servant à déterminer au moins un dispositif terminal qui réalise une transmission de coopération avec le second dispositif terminal. Comme le paramètre de qualité de canal complet peut refléter complètement la qualité de canal complet entre le premier dispositif terminal et le dispositif de réseau d'une part et le second dispositif terminal d'autre part, un dispositif terminal de coopération relativement approprié peut être sélectionné, ce qui permet d'améliorer efficacement les performances de transmission de coopération.
PCT/CN2020/093412 2019-07-03 2020-05-29 Procédé de transmission de coopération et appareil de communication WO2021000680A1 (fr)

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