WO2021056565A1 - Procédé de transmission d'informations de commande de liaison latérale et appareil de communication - Google Patents

Procédé de transmission d'informations de commande de liaison latérale et appareil de communication Download PDF

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Publication number
WO2021056565A1
WO2021056565A1 PCT/CN2019/109187 CN2019109187W WO2021056565A1 WO 2021056565 A1 WO2021056565 A1 WO 2021056565A1 CN 2019109187 W CN2019109187 W CN 2019109187W WO 2021056565 A1 WO2021056565 A1 WO 2021056565A1
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sci
data transmission
field
rnti
configuration information
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PCT/CN2019/109187
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English (en)
Chinese (zh)
Inventor
张莉莉
黎超
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华为技术有限公司
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Priority to PCT/CN2019/109187 priority Critical patent/WO2021056565A1/fr
Priority to CN201980100526.8A priority patent/CN114424594A/zh
Publication of WO2021056565A1 publication Critical patent/WO2021056565A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/30—Services specially adapted for particular environments, situations or purposes
    • H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]

Definitions

  • the present application relates to the field of communications, and more specifically, to a method and communication device for transmission of side link control information.
  • V2X communication is an important key technology for realizing environment perception and information interaction in the Internet of Vehicles.
  • the communication links between different user terminal devices may be called sidelinks (SL).
  • the vehicle-to-everything (V2X) communication between the vehicle and other entities (entity) can be carried out using a side link.
  • the physical resource allocation in V2X communication includes two allocation methods: the first allocation method is based on the scheduling of network equipment (such as base station), and the user equipment in V2X sends V2X on the scheduled time-frequency resources according to the scheduling information of the network equipment. Communication control messages and data.
  • the second allocation method is that the V2X user equipment automatically selects the time-frequency resources used for V2X communication from the available time-frequency resources included in the pre-configured V2X communication resource pool.
  • the device that sends data can notify the device that needs to receive the data about the resource configuration of the data through the side link control information (SCI).
  • SCI side link control information
  • V2X communication there are also multicast data services, unicast data services, and broadcast transmission data services. If the data of different types of services are transmitted in a shared resource pool, the SCI content of these types of services may be different. Therefore, you can consider using two-stage SCI (two-stage SCI). Further, the two-stage SCI is divided into the first stage SCI (first stage SCI) and the first stage SCI (second stage SCI).
  • the terminal equipment for broadcast data transmission only needs to detect the first stage SCI, and only the terminal equipment for unicast and multicast data transmission needs to detect the first stage SCI and the second stage SCI. That is, the first stage SCI can be shared by the three services. But even if the first stage SCI can be shared by the three services, the difference in unicast type, multicast type, and broadcast type still determines that the design of the first stage SCI for different service types is different. How to ensure that the control overhead of the first stage SCI is minimized, and to reduce the detection complexity of the SCI corresponding to different services is a problem that needs to be solved urgently.
  • the present application provides a method and communication device for transmitting side link control information, which can reduce the complexity of SCI detection.
  • a method for transmitting side link control information includes: receiving first side uplink control information SCI, where the first SCI includes a first field; and determining whether the first SCI satisfies a first condition;
  • the first field is used to indicate the configuration information of the second SCI, where the second SCI is used to schedule unicast data transmission or multicast data transmission; or, when the first SCI When an SCI does not meet the first condition, the first field is used to indicate the configuration information of broadcast data transmission;
  • the first condition includes at least one of the following conditions:
  • the first SCI uses the wireless network temporary identification RNTI to scramble, the first SCI uses the first wireless network temporary identification RNTI or the second RNTI to scramble, the parameter of the first field is greater than or equal to the first threshold, the first SCI
  • the format identifier is a first identifier or a second identifier, the first SCI includes a target identifier and the target identifier corresponds to a terminal device that receives the first SCI, and the first SCI includes a target identifier and the target identifier corresponds to a unicast service/multicast service.
  • the side link control information transmission method provided by the first aspect shares the first SCI (SCI1) through unicast data transmission, multicast data transmission, and broadcast data transmission.
  • the first SCI can be shared by the three services, which can reduce the first SCI (SCI1).
  • One SCI detection complexity when the first SCI satisfies the first condition, that is, in the unicast transmission mode or the multicast transmission mode, the first field of the first SCI is further used to indicate the related configuration information of the second SCI, and the second SCI is reduced.
  • the detection complexity of the SCI improves the efficiency of the terminal equipment to obtain the second SCI (SCI2), saves communication resources, and improves the communication efficiency.
  • that the first SCI satisfies the first condition includes:
  • the first SCI uses RNTI to scramble, the first SCI uses the first RNTI to scramble, the first SCI uses the second RNTI to scramble, the parameter of the first field is greater than or equal to the first threshold, the format ID of the first SCI ) Is the first identifier, the first SCI includes a target ID (target ID) and the target identifier corresponds to the terminal device that receives the first SCI, the first SCI includes the target identifier, and the target identifier corresponds to the unicast service/multicast service If at least one is satisfied, the first SCI meets the first condition.
  • target ID target ID
  • target identifier corresponds to the terminal device that receives the first SCI
  • the first SCI includes the target identifier
  • the target identifier corresponds to the unicast service/multicast service If at least one is satisfied, the first SCI meets the first condition.
  • the first SCI uses RNTI to scramble
  • the first SCI uses the first RNTI or the second RNTI to scramble
  • the parameter of the first field is greater than or equal to the first threshold
  • the first SCI contains the target identifier
  • the first SCI The format ID of an SCI is a specific format ID to determine that the first SCI satisfies the first condition, which is easy to implement, and the complexity of the first condition is low. This enables the terminal device to accurately and quickly determine that the first SCI meets the first condition, and improves the efficiency and accuracy of determining that the first SCI meets the first condition.
  • the first RNTI when the first SCI uses the first RNTI to scramble, the first RNTI is used to indicate that the first SCI is used for unicast data transmission; or, when the first SCI is used for unicast data transmission;
  • the second RNTI when the SCI uses the second RNTI to scramble, the second RNTI is used to indicate that the first SCI is used for multicast data transmission.
  • the first RNTI is used to implicitly indicate that the first SCI is used for unicast data transmission
  • the second RNTI is used to implicitly indicate that the first SCI is used for multicast data transmission, which is easy to implement and can make the terminal equipment accurate Quickly determine whether the first SCI is used for unicast data transmission or multicast data transmission, and improve the efficiency of the terminal device in determining the data type scheduled by the first SCI.
  • the first field is used to indicate the configuration information of the second SCI used to schedule unicast data transmission
  • the first field is used to indicate the configuration information of the second SCI used for scheduling multicast data transmission.
  • the first RNTI is used to implicitly indicate that the second SCI includes configuration information for unicast data transmission
  • the second RNTI is used to implicitly indicate that the second SCI includes configuration information for multicast data transmission, which is easy to implement and can make The terminal device accurately and quickly determines whether the second SCI is used for unicast data transmission or multicast data transmission, which improves the efficiency of the terminal device in determining the data type scheduled by the second SCI.
  • the terminal device determines that it is the recipient of the second SCI, and detects that the second SCI SCI.
  • the terminal device determines that it is the recipient of the second SCI, and detects that the second SCI SCI.
  • the first SCI includes a target ID (target ID) and the target ID corresponds to the terminal device that receives the first SCI, to indicate that the terminal device needs to detect the second SCI, which can improve the terminal device's determination that it needs to be detected.
  • the efficiency and accuracy of the second SCI reduces the complexity of the second SCI required to determine the need for terminal equipment, and is easy to implement.
  • the first field is used to indicate that it is used to schedule unicast data transmission or multicast
  • the configuration information of the second SCI for data transmission is used to indicate that it is used to schedule unicast data transmission or multicast.
  • the first SCI contains a target identifier and the target identifier corresponds to a terminal device that receives the first SCI
  • the first field is used to indicate that it is used to schedule unicast data transmission or multicast
  • the configuration information of the second SCI for data transmission is used to include a target ID (target ID) and the target ID corresponds to the terminal device that receives the first SCI, it is implicitly indicated that the second SCI includes multicast data transmission or unicast data transmission.
  • the configuration information is easy to implement, which enables the terminal device to accurately and quickly determine whether the second SCI is used for unicast data transmission or multicast data transmission, and improves the efficiency of the terminal device in determining the data type scheduled by the second SCI.
  • the first SCI when the first SCI includes a target identifier and the target identifier corresponds to a terminal device that receives the first SCI, the first SCI is used for unicast data transmission or for multicast data transmission .
  • the first SCI contains a target ID (target ID) and the target ID corresponds to the terminal device that receives the first SCI to implicitly indicate that the first SCI is used for unicast data transmission or used for multicast Data transmission is easy to implement, which enables the terminal device to accurately and quickly determine that the first SCI is used for unicast data transmission or for multicast data transmission, and improves the efficiency of the terminal device in determining the data type scheduled by the first SCI.
  • the first field is used to indicate that it is used to schedule unicast data transmission or multicast
  • the configuration information of the second SCI for data transmission is implicitly indicated that the second SCI includes configuration information for multicast data transmission or is unicast.
  • the configuration information for data transmission is easy to implement, which enables the terminal device to accurately and quickly determine whether the second SCI is used for unicast data transmission or multicast data transmission, and improves the efficiency of the terminal device in determining the data type scheduled by the second SCI.
  • the first SCI when the first SCI contains a target identifier and the target identifier corresponds to a unicast service or a multicast service, the first SCI is used for unicast data transmission or for multicast data transmission .
  • the first SCI when the first SCI contains a target ID and the target ID corresponds to a unicast service or a multicast service, it implicitly indicates whether the first SCI is used for unicast data transmission or multicast data transmission .
  • Easy to implement can make the terminal device accurately and quickly determine whether the first SCI is used for unicast data transmission or multicast data transmission, and improve the efficiency of the terminal device in determining the data type scheduled by the first SCI.
  • the first RNTI is a cell radio network temporary identifier C-RNTI, or a unicast radio network temporary identifier U-RNTI.
  • C-RNTI cell radio network temporary identifier
  • U-RNTI unicast radio network temporary identifier
  • the second RNTI may be a group radio network temporary identification G-RNTI.
  • G-RNTI group radio network temporary identification
  • the terminal device when the parameter of the first field is greater than or equal to the first threshold, the parameter of the first field and the second SCI There is a corresponding relationship between the configuration information.
  • the terminal device because there is a correspondence between the parameters of the first field and the configuration information of the second SCI, the terminal device can quickly and accurately determine the configuration information of the second SCI according to the parameters of the first field, which improves the determination of the second SCI configuration information. 2. The efficiency of SCI.
  • the first field is used to indicate the configuration information of the second SCI used to schedule unicast data transmission; or
  • the first field is used to indicate the configuration information of the second SCI used for scheduling multicast data transmission.
  • the first identifier is used to implicitly indicate that the second SCI includes configuration information for unicast data transmission
  • the second identifier is used to implicitly indicate that the second SCI includes configuration information for multicast data transmission, which is easy to implement and can make
  • the terminal device accurately and quickly determines whether the second SCI is used for unicast data transmission or multicast data transmission, which improves the efficiency of the terminal device in determining the data type scheduled by the second SCI.
  • the failure of the first SCI to satisfy the first condition includes:
  • the first SCI is not scrambled by RNTI, the first SCI is not scrambled by the first RNTI, the first SCI is not scrambled by the second RNTI, the parameter of the first field is less than the first threshold, the format identifier of the first SCI (format ID) is not the first identification or the second identification, the first SCI contains a target ID but the target ID does not correspond to the terminal device that receives the first SCI, the first SCI contains the target ID but the target ID does not correspond to the single If at least one of the broadcast service/multicast service and the first SCI does not contain the target identifier is satisfied, the first SCI does not satisfy the first condition.
  • the parameter of the first field is less than the first threshold, and the first SCI does not contain the target identifier.
  • the first SCI does not contain a specific target identifier, and the format ID of the first SCI is not a specific format ID to determine that the first SCI does not meet the first condition, which is easy to implement, and enables the terminal device to accurately and quickly determine the first condition. If an SCI does not meet the first condition, the efficiency and accuracy of determining that the first SCI does not meet the first condition are improved.
  • the configuration information of the second SCI includes:
  • the terminal device can detect the second SCI more quickly, reducing the complexity of detecting the second SCI by the terminal device, and reducing the power consumption of the terminal device.
  • the first field (information) may be the MCS indication field (information), the hybrid automatic repeat request HARQ process digital field (information), and the new data indication NDI) field in the first SCI.
  • the terminal device can determine the first field more quickly, so as to determine the configuration information of the second SCI or the configuration information of broadcast data transmission according to the first field. The efficiency of obtaining the configuration information of the second SCI or the configuration information of the broadcast data transmission by the terminal device is improved, thereby improving the communication efficiency.
  • a method for transmitting side link control information includes: generating first side uplink control information SCI, where the first SCI includes a first field; sending the first SCI;
  • the first field is used to indicate the configuration information of the second SCI
  • the second SCI is used to schedule unicast data transmission or multicast data transmission
  • the first field is used to indicate the configuration information of the broadcast data transmission
  • the first condition includes at least one of the following conditions:
  • the first SCI uses the wireless network temporary identifier RNTI to scramble, the first SCI uses the first RNTI or the second RNTI to scramble, the parameter of the first field is greater than or equal to the first threshold, and the format identifier of the first SCI is the first An identifier or a second identifier, the first SCI includes a target identifier and the target identifier corresponds to a terminal device that receives the first SCI, the first SCI includes a target identifier and the target identifier corresponds to a unicast service/multicast service.
  • the first SCI is shared by unicast data transmission, multicast data transmission, and broadcast data transmission, and the communication device transmits the first SCI.
  • the first SCI can be shared by the three services, which can reduce the detection complexity of the first SCI.
  • the first field of the first SCI is further used to indicate the related configuration information of the second SCI, and the second SCI is reduced.
  • the detection complexity of SCI improves the efficiency of terminal equipment to obtain the second SCI, saves communication resources, and improves communication efficiency.
  • that the first SCI satisfies the first condition includes:
  • the first SCI uses RNTI to scramble, the first SCI uses the first RNTI to scramble, the first SCI uses the second RNTI to scramble, the parameter of the first field is greater than or equal to the first threshold, the format ID of the first SCI ) Is the first identifier, the first SCI includes a target ID (target ID) and the target identifier corresponds to the terminal device that receives the first SCI, the first SCI includes the target identifier, and the target identifier corresponds to the unicast service/multicast service If at least one is satisfied, the first SCI meets the first condition.
  • target ID target ID
  • target identifier corresponds to the terminal device that receives the first SCI
  • the first SCI includes the target identifier
  • the target identifier corresponds to the unicast service/multicast service If at least one is satisfied, the first SCI meets the first condition.
  • the first RNTI is used to implicitly indicate that the first SCI is used for unicast data transmission
  • the second RNTI is used to implicitly indicate that the first SCI is used for multicast data transmission, which is easy to implement and can make the terminal equipment accurate Quickly determine whether the first SCI is used for unicast data transmission or multicast data transmission, and improve the efficiency of the terminal device in determining the data type scheduled by the first SCI.
  • the first RNTI when the first SCI uses the first RNTI to scramble, the first RNTI is used to indicate that the first SCI is used for unicast data transmission; or, when the first SCI is used for unicast data transmission;
  • the second RNTI when the SCI uses the second RNTI to scramble, the second RNTI is used to indicate that the first SCI is used for multicast data transmission.
  • the first RNTI is used to implicitly indicate that the second SCI includes configuration information for unicast data transmission
  • the second RNTI is used to implicitly indicate that the second SCI includes configuration information for multicast data transmission, which is easy to implement and can make
  • the terminal device accurately and quickly determines whether the second SCI is used for unicast data transmission or multicast data transmission, which improves the efficiency of the terminal device in determining the data type scheduled by the second SCI.
  • the first field is used to indicate the configuration information of the second SCI for scheduling unicast data transmission
  • the first field is used to indicate the configuration information of the second SCI used for scheduling multicast data transmission.
  • the first RNTI is used to implicitly indicate that the second SCI includes configuration information for unicast data transmission
  • the second RNTI is used to implicitly indicate that the second SCI includes configuration information for multicast data transmission, which is easy to implement and can make The terminal device accurately and quickly determines whether the second SCI is used for unicast data transmission or multicast data transmission, which improves the efficiency of the terminal device in determining the data type scheduled by the second SCI.
  • the terminal device determines that it is the recipient of the second SCI, and detects the second SCI. SCI.
  • the terminal device determines that it is the recipient of the second SCI, and detects the second SCI.
  • the terminal device determines that it is the recipient of the second SCI, and detects the second SCI.
  • the terminal device determines that it is the recipient of the second SCI, and detects the second SCI.
  • the first SCI includes a target ID (target ID) and the target ID corresponds to the terminal device that receives the first SCI, to indicate that the terminal device needs to detect the second SCI, which can improve the terminal device's determination that it needs to be detected.
  • the efficiency and accuracy of the second SCI reduces the complexity of the second SCI required to determine the need for terminal equipment, and is easy to implement.
  • the first field is used to indicate that it is used to schedule unicast data transmission or multicast
  • the configuration information of the second SCI for data transmission is used to indicate that it is used to schedule unicast data transmission or multicast.
  • the first SCI contains a target identifier and the target identifier corresponds to a terminal device that receives the first SCI
  • the first field is used to indicate that it is used to schedule unicast data transmission or multicast
  • the configuration information of the second SCI for data transmission is used to include a target ID (target ID) and the target ID corresponds to the terminal device that receives the first SCI, it is implicitly indicated that the second SCI includes multicast data transmission or unicast data transmission.
  • the configuration information is easy to implement, which enables the terminal device to accurately and quickly determine whether the second SCI is used for unicast data transmission or multicast data transmission, and improves the efficiency of the terminal device in determining the data type scheduled by the second SCI.
  • the first SCI when the first SCI includes a target identifier and the target identifier corresponds to a terminal device that receives the first SCI, the first SCI is used for unicast data transmission or for multicast data transmission .
  • the first SCI contains a target ID (target ID) and the target ID corresponds to the terminal device that receives the first SCI to implicitly indicate that the first SCI is used for unicast data transmission or used for multicast Data transmission is easy to implement, which enables the terminal device to accurately and quickly determine that the first SCI is used for unicast data transmission or for multicast data transmission, and improves the efficiency of the terminal device in determining the data type scheduled by the first SCI.
  • the first field is used to indicate that it is used for scheduling unicast data transmission or multicast
  • the configuration information of the second SCI for data transmission is implicitly indicated that the second SCI includes configuration information for multicast data transmission or is unicast.
  • the configuration information for data transmission is easy to implement, which enables the terminal device to accurately and quickly determine whether the second SCI is used for unicast data transmission or multicast data transmission, and improves the efficiency of the terminal device in determining the data type scheduled by the second SCI.
  • the first SCI when the first SCI contains a target identifier and the target identifier corresponds to a unicast service or a multicast service, the first SCI is used for unicast data transmission or for multicast data transmission .
  • the first SCI when the first SCI contains a target ID and the target ID corresponds to a unicast service or a multicast service, it implicitly indicates whether the first SCI is used for unicast data transmission or multicast data transmission .
  • Easy to implement can make the terminal device accurately and quickly determine whether the first SCI is used for unicast data transmission or multicast data transmission, and improve the efficiency of the terminal device in determining the data type scheduled by the first SCI.
  • the first RNTI is a cell radio network temporary identifier C-RNTI, or a unicast radio network temporary identifier U-RNTI.
  • C-RNTI cell radio network temporary identifier
  • U-RNTI unicast radio network temporary identifier
  • the second RNTI may be a group radio network temporary identification G-RNTI.
  • G-RNTI group radio network temporary identification
  • the terminal device when the parameter of the first field is greater than or equal to the first threshold, the parameter of the first field and the second SCI There is a corresponding relationship between the configuration information.
  • the terminal device because there is a correspondence between the parameters of the first field and the configuration information of the second SCI, the terminal device can quickly and accurately determine the configuration information of the second SCI according to the parameters of the first field, which improves the determination of the second SCI configuration information. 2. The efficiency of SCI.
  • the first field is used to indicate the configuration information of the second SCI for scheduling unicast data transmission; or
  • the first field is used to indicate the configuration information of the second SCI used for scheduling multicast data transmission.
  • the first identifier is used to implicitly indicate that the second SCI includes configuration information for unicast data transmission
  • the second identifier is used to implicitly indicate that the second SCI includes configuration information for multicast data transmission, which is easy to implement and can make
  • the terminal device accurately and quickly determines whether the second SCI is used for unicast data transmission or multicast data transmission, which improves the efficiency of the terminal device in determining the data type scheduled by the second SCI.
  • the failure of the first SCI to satisfy the first condition includes:
  • the first SCI is not scrambled by RNTI, the first SCI is not scrambled by the first RNTI, the first SCI is not scrambled by the second RNTI, the parameter of the first field is less than the first threshold, the format identifier of the first SCI (format ID) is not the first identification or the second identification, the first SCI contains a target ID but the target ID does not correspond to the terminal device that receives the first SCI, the first SCI contains the target ID but the target ID does not correspond to the single If at least one of the broadcast service/multicast service and the first SCI does not contain the target identifier is satisfied, the first SCI does not satisfy the first condition.
  • the parameter of the first field is less than the first threshold, and the first SCI does not contain the target identifier.
  • the first SCI does not contain a specific target identifier, and the format ID of the first SCI is not a specific format ID to determine that the first SCI does not meet the first condition, which is easy to implement, and enables the terminal device to accurately and quickly determine the first condition. If an SCI does not meet the first condition, the efficiency and accuracy of determining that the first SCI does not meet the first condition are improved.
  • the configuration information of the second SCI includes:
  • the first field (information) may be the MCS indication field (information), the hybrid automatic repeat request HARQ process digital field (information), and the new data indication NDI) field in the first SCI.
  • MCS indication field information
  • hybrid automatic repeat request HARQ process digital field information
  • NDI new data indication field in the first SCI.
  • a communication device which includes a unit for executing the steps of the above first aspect or any possible implementation manner of the first aspect.
  • a communication device in a fourth aspect, includes a unit for executing each step in the above second aspect or any possible implementation manner of the second aspect.
  • a communication device in a fifth aspect, includes at least one processor and a memory, and the at least one processor is configured to execute the above first aspect or the method in any possible implementation of the first aspect.
  • a communication device in a sixth aspect, includes at least one processor and a memory, and the at least one processor is configured to execute the above second aspect or any possible implementation of the second aspect.
  • a communication device which includes at least one processor and an interface circuit, and the at least one processor is configured to execute the above first aspect or the method in any possible implementation manner of the first aspect.
  • a communication device in an eighth aspect, includes at least one processor and an interface circuit, and the at least one processor is configured to execute the above second aspect or any possible implementation of the second aspect.
  • a terminal device in a ninth aspect, includes the communication device provided in the third aspect, or the terminal device includes the communication device provided in the fifth aspect, or the terminal device includes the communication device provided in the seventh aspect. ⁇ Communication device.
  • a terminal device in a tenth aspect, includes the communication device provided in the foregoing fourth aspect, or the terminal device includes the communication device provided in the foregoing sixth aspect, or the terminal device includes the communication device provided in the foregoing eighth aspect ⁇ Communication device.
  • a computer program product includes a computer program.
  • the computer program is executed by a processor, the computer program is used to execute the first aspect to the second aspect, or the first aspect to the second aspect Any possible implementation in the method.
  • a computer-readable storage medium stores a computer program.
  • the computer program When the computer program is executed, it is used to execute the first aspect to the second aspect, or the first aspect to the The method in any possible implementation of the second aspect.
  • a chip including: a processor, configured to call and run a computer program from a memory, so that a device installed with the chip executes the above aspects or any of the possible implementations of the aspects Methods.
  • the method and communication device for side link control information transmission share the first SCI for data transmission through unicast transmission mode, multicast transmission mode, and broadcast transmission mode.
  • the SCI1 format and/or payload (payload size) corresponding to the three service types are the same, and different methods are used to distinguish the first SCI corresponding to the service type.
  • the first field in the first SCI is further used to indicate related configuration information of the second SCI.
  • the first SCI can be shared by the three services, which can reduce the detection complexity of the first SCI.
  • the detection complexity of the second SCI is reduced, the efficiency of obtaining the second SCI by the terminal device is improved, communication resources are saved, and the communication efficiency is improved.
  • Fig. 1 is a schematic diagram of an example of a communication system applicable to an embodiment of the present application.
  • Fig. 2 is a schematic diagram of another example of a communication system applicable to the method of the embodiment of the present application.
  • FIG. 3 is a schematic interaction diagram of an example of a method for transmitting side link control information according to an embodiment of the present application.
  • FIG. 4 is a schematic diagram of SCI1 corresponding to unicast data transmission, multicast data transmission, and broadcast data transmission in an embodiment of the application.
  • FIG. 5 is a schematic diagram of SCI1 corresponding to unicast data transmission, multicast data transmission, and broadcast data transmission in an embodiment of the application.
  • Fig. 6 is a schematic block diagram of a communication device provided by an embodiment of the present application.
  • FIG. 7 is a schematic block diagram of another example of a communication device provided by an embodiment of the present application.
  • FIG. 8 is a schematic block diagram of another example of a communication device provided by an embodiment of the present application.
  • FIG. 9 is a schematic block diagram of another example of a communication device according to an embodiment of the present application.
  • FIG. 10 is a schematic block diagram of a terminal device provided by an embodiment of the present application.
  • FIG. 11 is a schematic block diagram of another example of a terminal device according to an embodiment of the present application.
  • V2X or device-to-device (D2D) communication systems can be applied to various communication systems, such as: V2X or device-to-device (D2D) communication systems, global system of mobile communication (GSM) systems, code division multiple access (Code Division Multiple Access, CDMA) system, Wideband Code Division Multiple Access (WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, LTE Frequency Division Duplex (FDD) system, LTE Time Division Duplex (TDD), Universal Mobile Telecommunication System (UMTS), Worldwide Interoperability for Microwave Access , WiMAX) communication system, the future 5th Generation (5G) system or New Radio (NR), etc.
  • GSM global system of mobile communication
  • CDMA code division multiple access
  • WCDMA Wideband Code Division Multiple Access
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • FDD Frequency Division Duplex
  • TDD Time Division Duplex
  • UMTS Universal Mobile Telecommunication System
  • WiMAX Worldwide
  • the terminal equipment in the embodiments of this application may refer to user equipment, access terminals, user units, user stations, mobile stations, mobile stations, remote stations, remote terminals, mobile equipment, user terminals, terminals, wireless communication equipment, user agents, or User device. Cars, vehicle-mounted equipment, etc. in the V2X communication system.
  • the terminal device can also be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a wireless local loop (Wireless Local Loop, WLL) station, a personal digital processing (Personal Digital Assistant, PDA), and wireless communication.
  • SIP Session Initiation Protocol
  • WLL Wireless Local Loop
  • PDA Personal Digital Assistant
  • Functional handheld devices computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminal devices in the future 5G network or future evolution of the public land mobile network (Public Land Mobile Network, PLMN) Terminal equipment, etc., which are not limited in the embodiment of the present application.
  • PLMN Public Land Mobile Network
  • the network device in the embodiment of the application may be a device used to communicate with terminal devices, and the network device may be a Global System of Mobile Communication (GSM) system or Code Division Multiple Access (CDMA)
  • GSM Global System of Mobile Communication
  • CDMA Code Division Multiple Access
  • BTS Base Transceiver Station
  • BTS Base Transceiver Station
  • NodeB, NB base station
  • WCDMA Wideband Code Division Multiple Access
  • Evolutional Base Station evolved base station
  • NodeB, eNB, or eNodeB it can also be a wireless controller in a cloud radio access network (Cloud Radio Access Network, CRAN) scenario, or the network device can be a serving transmission reception point (Serving TRP), Relay stations, access points, in-vehicle devices, wearable devices, network devices in future 5G networks or network devices in future evolved PLMN networks, etc., are not limited in the embodiment of the present application.
  • CRAN Cloud Radio Access Network
  • Server TRP serving transmission reception point
  • Relay stations access points
  • in-vehicle devices wearable devices
  • network devices in future 5G networks or network devices in future evolved PLMN networks, etc. are not limited in the embodiment of the present application.
  • the terminal device or the network device includes a hardware layer, an operating system layer running on the hardware layer, and an application layer running on the operating system layer.
  • the hardware layer includes hardware such as a central processing unit (CPU), a memory management unit (MMU), and memory (also referred to as main memory).
  • the operating system may be any one or more computer operating systems that implement business processing through processes, for example, Linux operating systems, Unix operating systems, Android operating systems, iOS operating systems or windows operating systems.
  • the application layer includes applications such as browsers, address books, word processing software, and instant messaging software.
  • the embodiments of the application do not specifically limit the specific structure of the execution body of the method provided in the embodiments of the application, as long as the program that records the codes of the methods provided in the embodiments of the application can be provided in accordance with the embodiments of the application.
  • the execution subject of the method provided in the embodiments of the present application may be a terminal device or a network device, or a functional module in the terminal device or the network device that can call and execute the program.
  • various aspects or features of the present application can be implemented as methods, devices, or products using standard programming and/or engineering techniques.
  • article of manufacture used in this application encompasses a computer program accessible from any computer-readable device, carrier, or medium.
  • computer-readable media may include, but are not limited to: magnetic storage devices (for example, hard disks, floppy disks, or tapes, etc.), optical disks (for example, compact discs (CD), digital versatile discs (DVD)) Etc.), smart cards and flash memory devices (for example, erasable programmable read-only memory (EPROM), cards, sticks or key drives, etc.).
  • various storage media described herein may represent one or more devices and/or other machine-readable media for storing information.
  • machine-readable medium may include, but is not limited to, wireless channels and various other media capable of storing, containing, and/or carrying instructions and/or data.
  • V2X communication is an important key technology for realizing environment perception and information interaction in the Internet of Vehicles.
  • Other devices here can be other vehicles, other infrastructures, pedestrians, and terminal devices.
  • V2X communication can be regarded as a special case of device to device (D2D) communication.
  • the communication link between different user terminal devices can be referred to as SL.
  • the vehicle-to-vehicle communication link may be SL.
  • the physical sidelink control channel (PSCCH) is used to transmit control information in V2X communication
  • PSSCH physical sidelink shared channel
  • physical resource allocation in V2X communication includes two allocation methods.
  • the first resource allocation method is based on the scheduling of network equipment (such as base stations).
  • User equipment in V2X (such as vehicles or vehicle-mounted equipment) sends V2X communication control on the scheduled time-frequency resources according to the scheduling information of the network equipment. News and data.
  • the second resource allocation method is that the user equipment in V2X automatically selects the time-frequency resources used for V2X communication from the available time-frequency resources included in the pre-configured V2X communication resource pool (or may also be referred to as the V2X resource set).
  • the terminal device that sends data detects or senses resources in the resource pool, it needs to go to the side of other terminal devices
  • the corresponding quality of service (QOS) parameter is interpreted in the link control information (side link control information, SCI), and the QOS can represent the priority information of other terminals sending data on the resource.
  • the parameter may be the data priority (ProSe Per-Packet Priority, PPPP) in the resource pool.
  • the sending device can obtain the PPPP of other terminal devices on the resource according to the PPPP of the data it needs to send and the PPPP of the detected resource. If the corresponding threshold is met, the resource can be used. Otherwise, the resource cannot be used. Satisfying the corresponding threshold value means that the detected energy signal is less than or equal to the threshold value.
  • the network device schedules the sending device on the side link through downlink control information (DCI), and the sending device is based on the resources allocated for the side-line data transmission in the DCI (including the resources used for the side-line data transmission).
  • the sending device sends the SCI to the receiving device on the side link based on the successful detection of the channel, and notifies the receiving device of the resources and sending parameters of the side row data.
  • the current SCI can be called single-level (single-level) SCI (single-level). -stage SCI), and it is proposed to consider using two-stage (two-stage) SCI (two-stage SCI) in the future.
  • Two-stage SCI divides SCI into the first stage SCI (first stage SCI) and the second stage SCI (second stage SCI).
  • the first stage SCI can also be called SCI1
  • the second stage SCI can also be called SCI2.
  • the terminal equipment working on the side link usually needs to detect the SCI1 and obtain the indicated resource (the resource can be reserved/scheduled, or has been used to schedule data), so as not to conflict when deciding the use of its own resources .
  • Table 1 shows the contents of single-stage SCI and two-stage SCI.
  • RV redundancy version
  • Multicast transmission methods, unicast transmission methods, and broadcast transmission methods can also be understood as different types of services.
  • the multicast transmission method refers to a technology in which one terminal device that sends data sends the same data to multiple other terminal devices at the same time, that is, point-to-multipoint transmission.
  • the unicast transmission mode refers to a mode in which a terminal device that sends data only sends data to another terminal device for the same data, that is, point-to-point transmission.
  • the broadcast (broadcast) transmission mode refers to a mode in which a terminal device that sends data sends data on a broadcast channel, and all other terminal devices can receive data on the broadcast channel.
  • Table 2 shows the possible fields and the corresponding number of bits in the SCI used to schedule unicast data, multicast data, and broadcast data.
  • MCS modulation and coding scheme
  • the SCI content of these service types may be different.
  • the service type may be one or more of unicast type, multicast type, and broadcast type.
  • the SCI corresponding to broadcast data only needs to include resource occupancy information and simple scheduling information, while the SCI corresponding to unicast/multicast needs to include more complex scheduling information. Therefore, the payload size required by the SCI corresponding to the broadcast data and the SCI corresponding to the unicast/multicast may be different.
  • the load here can be understood as the length of SCI information bits.
  • SCI is also a kind of control information, which can be used for resource detection and scheduling of unicast type, multicast type, and broadcast type data in SL.
  • the terminal device that needs to receive the SCI needs to detect the SCI (or can be called blind detection), and a decoding is performed every time a blind detection is performed, and the total amount of calculation is very large. In order to minimize the amount of blind detection calculations for terminal equipment, it is necessary to keep the payload size of the SCI corresponding to different service types as the same as possible.
  • the SCI contains a lot of scheduling information, and these scheduling information may even involve the feedback information of the SL and the feedback of the channel state information of the SL.
  • the Two-stage SCI is divided into SCI1 (first stage SCI) and SCI 2 (second stage SCI).
  • SCI1 first stage SCI
  • SCI 2 second stage SCI.
  • unicast type and multicast type data transmission share SCI1, and only use SCI2 for unicast type and multicast type. That is, the terminal equipment for broadcast data transmission only needs to detect SCI1, and only the terminal equipment for unicast and multicast data transmission can detect SCI1 and SCI2.
  • the data transmission mode of any terminal device or multiple terminal devices between terminal device 1 and terminal device 2 to terminal device N includes unicast transmission mode, Multicast transmission mode, broadcast transmission mode.
  • the data transmission mode between terminal device 1 and terminal device 2 is unicast transmission mode, or suppose that the data transmission mode between terminal device 1 and terminal devices 3 to 5 is multicast transmission mode, and terminal device 1 and terminal device The data transmission mode between 6 and N is broadcast transmission mode. Then the terminal device 6 to the terminal device N need to detect SCI1, and the terminal devices 2 to 5 need to detect both SCI1 and SCI2.
  • the terminal device needs to detect two SCIs to correctly transmit the data. How to reduce the complexity of detecting the two SCIs in the terminal device has become a problem that needs to be solved urgently.
  • the difference in unicast type, multicast type, and broadcast type still determines that the design of the first stage SCI for different service types is different. In this case, how to ensure that the control overhead of the first stage SCI is minimized, and the detection complexity of the first stage SCI is also a problem that needs to be solved.
  • the present application provides a method for transmission of side link control information, and the SCI1 is shared for data transmission through a unicast transmission mode, a multicast transmission mode, and a broadcast transmission mode.
  • the SCI1 format and/or payload (payload size) corresponding to the three service types are the same, and different methods are used to distinguish the SCI1 corresponding to the service type.
  • the field of the SCI1 is further used to indicate the relevant configuration information of the SCI2.
  • SCI1 can be shared by three services, which can reduce the detection complexity of SCI1.
  • the detection complexity of SCI2 is reduced, the efficiency of obtaining SCI2 by terminal equipment is improved, communication resources are saved, and communication efficiency is improved.
  • FIG. 1 is a schematic diagram of a communication system 100 applicable to the method for transmitting side link control information according to an embodiment of the present application.
  • the communication system 100 includes four communication devices, for example, a network device 110, and terminal devices 121 to 123.
  • the network device 110 and at least one of the terminal devices 121 to 123 can be connected via a wireless connection. data communication.
  • the link formed between the two is SL.
  • the terminal device 121 can use the method for transmitting side link control information provided in this application to the terminal device 122 and the terminal device.
  • the terminal device 121 sends SCI1 for scheduling unicast type and multicast type data transmission between the terminal device 121 and the terminal device 122 and the terminal device 123.
  • the terminal device 121 may send the SCI1 to all terminal devices including the terminal device 122 and the terminal device 123 for scheduling broadcast-type data transmission between the terminal device 121 and all the terminals.
  • Fig. 2 is a schematic diagram of another communication system 120 applicable to the method for transmitting side link control information according to an embodiment of the present application.
  • the communication system 120 includes three communication devices, for example, terminal devices 121 to 123, wherein the terminal device and the terminal device can communicate data through D2D or V2X communication methods.
  • the link between the two is SL.
  • the terminal device 121 can use the side link control information transmission method provided in this application to send the SCI1 to the terminal device 122 and the terminal device 123 for scheduling unicast between the terminal device 121 and the terminal device 122 and the terminal device 123.
  • Type or multicast type of data transmission Alternatively, the terminal device 121 may send the SCI1 to all terminal devices including the terminal device 122 and the terminal device 123 for scheduling broadcast-type data transmission between the terminal device 121 and all the terminals.
  • each communication system shown in FIG. 1 and FIG. 2 may also include more network nodes, such as more terminal devices or network devices, and the network devices included in each communication system shown in FIG. 1 and FIG. 2
  • the terminal device may be a network device or terminal device in various forms mentioned above.
  • the embodiments of the present application are not shown one by one in the figure.
  • the terminal device is taken as an example of the execution subject of the execution method of each embodiment to describe the method of each embodiment.
  • the execution subject of the execution method may also be a chip applied to a terminal device.
  • the terminal device may be a vehicle, a vehicle-mounted device, a mobile phone terminal, etc. in V2X communication.
  • the method 200 shown in FIG. 3 may include step S210 to step S230. Each step in the method 200 will be described in detail below with reference to FIG. 3.
  • the first terminal device generates a first SCI, where the first SCI includes a first field.
  • the first SCI may be the aforementioned SCI1.
  • the first terminal device sends the first SCI to the second terminal device.
  • the second terminal device receives the first SCI.
  • the second terminal device determines whether the first SCI satisfies the first condition.
  • the first field is used to indicate the configuration information of the second SCI, where the second SCI is used to schedule unicast data transmission or multicast data transmission;
  • the first field is used to indicate the configuration information of broadcast data transmission.
  • the first condition includes at least one of the following conditions:
  • the first SCI uses the wireless network temporary identifier (RNTI) to scramble, the first SCI uses the first RNTI or the second RNTI to scramble, the parameter of the first field is greater than or equal to the first threshold, and the format identifier of the first SCI It is the first logo or the second logo.
  • RNTI wireless network temporary identifier
  • the first terminal device may send the first SCI to the second terminal device, and the first SCI may be SC1 (first stage SCI)) .
  • the first SCI may be SCI1 as an example for description.
  • the manner in which the first terminal device sends data to the second terminal device may be a unicast data manner, a multicast data manner, or a broadcast data manner.
  • the SCI1 includes the first field.
  • the first field may also be understood as the first information, or the first bit field, or the first information field.
  • the first field may be only one field, or may be one or more fields, or, one or more information, or, one or more bit fields, or, one or more information fields.
  • the second terminal device When the mode of sending data by the first terminal device to the second terminal device is a multicast data mode, the second terminal device may be one of a group of terminal devices, and the first terminal device sends multicast data to this group of terminal devices. All terminal devices in this group of terminal devices can receive the SCI1.
  • the second terminal device When the method of sending data by the first terminal device to the second terminal device is broadcast data transmission, the second terminal device may be any one of all terminal devices adjacent to the first terminal device. All terminal devices adjacent to the first terminal device can receive the SCI1.
  • SCI1 is used to schedule unicast data transmission, multicast data transmission, or broadcast data transmission.
  • SCI1 may include information on resource occupation and so on.
  • the first terminal device may first receive the DCI from the network device, and generate SCI1 according to the DCI.
  • the first terminal device may first perform resource sensing in the resource pool according to the data it needs to send, determine the available resources, and then send the SCI1 to the second terminal device.
  • the first terminal device sends the first SCI to the second terminal device.
  • the first terminal device may send SCI1 to the second terminal device through the PSCCH.
  • the first terminal device determines whether the SCI1 satisfies the first condition.
  • the first condition includes at least one of the following conditions:
  • SCI1 uses RNTI to scramble, SCI1 uses the first RNTI or the second RNTI to scramble, the parameter of the first field is greater than or equal to the first threshold, the format of SCI1 is the first identifier or the second identifier, and SCI1 contains the target ID (target ID ) And the target identifier corresponds to the second terminal device, the SCI1 includes the target identifier, and the target identifier corresponds to a unicast service/multicast service.
  • the second terminal device may be one or more terminal devices.
  • the target identifier can also be referred to as a destination ID, and the ID can also be referred to as an index.
  • the SCI1 includes a target ID (target ID) and the target ID corresponds to one or more terminal devices.
  • target ID may be the ID of the terminal device that needs to detect the SCI2.
  • the ID of the terminal device can be the C-RNTI of the terminal device, or the absolute or relative identification of the terminal device in the system/multicast group, or the The ID of the terminal device may also be the truncated several bits of the C-RNTI of the terminal device.
  • the SCI1 includes a target identifier and the target identifier corresponds to a unicast service/multicast service, which can be understood as: implicitly matching at least one of the unicast service/multicast service.
  • the target identifier is implicitly matching at least one of unicast services/multicast services, there is a correspondence between the target identifier and at least one of unicast services/multicast services, or there is a corresponding relationship between the target identifier and at least one of unicast services/multicast services.
  • Correspondence of at least one of the unicast service/multicast service group may be pre-defined by the protocol or configured to the terminal device through high-level signaling.
  • the target identifier can be one or more.
  • the parameter of the first field in SCI1 is greater than or equal to the first threshold, and the format identifier of SCI1 is the first identifier or the first identifier.
  • the SCI1 includes a target ID (target ID) and the target ID corresponds to the second terminal device, and the SCI1 includes a target ID and the target ID corresponds to at least one of the unicast service/multicast service satisfies, the SCI1 satisfies the first Condition, the first field in SCI1 is used to indicate the configuration information of the second SCI.
  • the second SCI may be SCI2 (second stage SCI).
  • the second SCI uses SCI2 as an example.
  • SCI2 is used to schedule unicast data transmission or multicast data transmission, that is, when the SCI1 meets the first condition, SCI1 is used to schedule unicast data transmission or multicast data transmission, which means that the second terminal device not only needs to detect SCI1, SCI2 also needs to be tested.
  • the second terminal device determines that it is the receiver of the SCI2 and detects the SCI2.
  • SCI2 when the service type is unicast, SCI2 can be scrambled by the C-RNTI of the second terminal device; when the service type is multicast, SCI2 can be scrambled by the identifier of the multicast group where the second terminal is located.
  • the identifier of the multicast group where it belongs may be the RNTI corresponding to the multicast group or the group RNTI.
  • the second SCI includes configuration information for multicast data transmission or unicast data transmission.
  • SCI1 instructs SCI1 to be used for unicast data transmission or for multicast data transmission, which improves the efficiency of terminal equipment to determine the data type scheduled by SCI1, which is easy to implement.
  • the terminal device can accurately and quickly determine whether the SCI2 is used for unicast data transmission or multicast data transmission, thereby improving the efficiency of the terminal device in determining the data type scheduled by the SCI2.
  • the SCI1 does not meet the first condition, for example, SCI1 is not scrambled by RNTI, SCI1 is not scrambled by the first RNTI or the second RNTI, the parameter of the first field is less than the first threshold, and the format identifier of SCI1 is not the first
  • the SCI1 contains a target identifier and at least one of the corresponding broadcast services of the target identifier is satisfied, the first field in the SCI1 is used to indicate the configuration information of the broadcast data transmission. That is, when SCI1 does not meet the first condition, SCI1 is used to schedule broadcast data transmission, which means that the second terminal device only needs to detect SCI1 and does not need to detect SCI2.
  • the second terminal device may detect the SCI2 according to the configuration information of the SCI2 indicated by the first field.
  • the side link control information transmission method provided in this application shares the first SCI (SCI1) through unicast data transmission, multicast data transmission, and broadcast data transmission.
  • the first SCI can be shared by three services, which can reduce the first SCI (SCI1).
  • the detection complexity of SCI when the SCI1 satisfies the first condition, that is, in the unicast transmission mode or the multicast transmission mode, the first field of the first SCI is further used to indicate the related configuration information of the second SCI, and the second SCI is reduced.
  • the detection complexity improves the efficiency of the terminal device to obtain the second SCI, saves communication resources, and improves the communication efficiency.
  • the first field (information) in the SCI1 may be a field (information) used for data scheduling.
  • the first field (information) may be the MCS indication field (information) in SCI1, the hybrid automatic repeat request (HARQ) process number field (information), and the new data indication (New data).
  • This application is not restricted here.
  • the terminal device can determine the first field more quickly, so as to determine the configuration information of the second SCI or the configuration information of broadcast data transmission according to the first field. The efficiency of obtaining the configuration information of the second SCI or the configuration information of the broadcast data transmission by the terminal device is improved, thereby improving the communication efficiency.
  • SCI1 satisfies the first condition including:
  • SCI1 uses RNTI to scramble, SCI1 uses the first RNTI to scramble, SCI1 uses the second RNTI to scramble, the parameter of the first field is greater than or equal to the first threshold, the format ID of SCI1 is the first identifier, and SCI1 contains If the target ID (target ID) corresponds to the second terminal device, the SCI1 includes the target ID, and the target ID corresponds to at least one of the unicast service/multicast service, the SCI1 satisfies the first condition.
  • target ID target ID
  • Unicast data transmission, multicast data transmission, and broadcast data transmission can share SCI1.
  • the formats of SCI1 corresponding to unicast data transmission, multicast data transmission, and broadcast data transmission may be the same.
  • the format of SCI1 can be represented by the format ID (format identify, format ID) of SCI1.
  • SCI1 that is, unicast data transmission, multicast data transmission, and broadcast data transmission correspond to one SCI1
  • the format identifiers of these three SCI1s can be the same, that is The format of the three SCI1 can be the same.
  • the three SCI1s all include the first field, which is optional.
  • the position of the first field in the three SCI1s is the same. However, the meaning/interpretation of the first field in the three SCI1 is different.
  • SCI1 scrambled by RNTI can be understood as cyclic redundancy check (cyclic redundancy check, CRC) of SCI1 scrambled by RNTI.
  • CRC cyclic redundancy check
  • the SCI1 when the SCI1 is scrambled by the RNTI, the SCI1 is used to schedule unicast data transmission or multicast data transmission. That is, there is a correspondence between using RNTI to scramble SCI1 and SCI1 for scheduling unicast data transmission or multicast data transmission, and the correspondence may be predefined or configured by signaling.
  • the second terminal device receives the SCI1 scrambled by the RNTI, that is, the SCI1 satisfies the first condition, it can determine that the received SCI1 is used for scheduling unicast data transmission or multicast data transmission.
  • the first field is used to indicate the configuration information of the SCI2, and the second terminal device needs to detect the SCI2.
  • SCI2 is used to schedule unicast data transmission or multicast data transmission.
  • the second terminal device may not determine whether the received SCI1 is used for scheduling unicast data transmission/multicast data transmission/broadcast data transmission, that is, the second terminal may directly determine whether the SCI2 needs to be detected. Therefore, in each embodiment of the present application, it can be determined whether SCI2 needs to be detected according to whether SCI1 meets the first condition. That is, the second terminal device is receiving the SCI1, and the SCI1 meets the first condition, it can be determined that the first field is used to indicate the configuration information of the SCI2, and the second terminal device needs to detect the SCI2.
  • the terminal device When the terminal device receives the SCI1 scrambled by the RNTI, it can determine that the SCI1 is used for unicast data transmission or multicast data transmission.
  • the data transmission mode between the first terminal device and the second terminal device is a unicast data transmission mode or a multicast transmission mode.
  • the second terminal device may determine the configuration information of the SCI2 according to the first field of the SCI1, and detect the SCI2 according to the configuration information of the SCI2. After obtaining the SCI1 and SCI2, the second terminal device can correctly receive the unicast data or the multicast data sent by the first terminal device.
  • the SCI1 when the SCI1 uses a specific first RNTI for scrambling, the SCI1 is used for unicast data transmission.
  • the first RNTI is used to indicate that the SCI1 is used for unicast data transmission, that is, there is a correspondence between the first RNTI and the SCI1 used for unicast data transmission, and the correspondence may be predefined or configured by signaling.
  • the first RNTI may be a universal terrestrial radio access network temporary identifier (U-RNTI), or the first RNTI may be a cell network temporary identifier (C-RNTI), or the first RNTI may be a cell network temporary identifier (C-RNTI).
  • An RNTI is a unicast radio network temporary identifier (U-RNTI).
  • U-RNTI radio network temporary identifier
  • the first RNTI is used to implicitly indicate that SCI2 includes configuration information for unicast data transmission
  • the second RNTI is used to implicitly indicate that SCI2 includes configuration information for multicast data transmission, which is easy to implement and can make the terminal equipment accurate Quickly determine whether SCI2 is used for unicast data transmission or multicast data transmission, and improve the efficiency of terminal equipment to determine the data type scheduled by SCI2.
  • the second terminal determines that it is the receiver of the SCI2 and detects the SCI2.
  • the target identifier corresponding to the second terminal device may be referred to as the first target identifier.
  • SCI2 When SCI1 uses the first RNTI to scramble, SCI2 is used to schedule unicast data transmission. That is, there may be a correspondence between the first RNTI and the SCI2 used to schedule unicast data transmission. The corresponding relationship may also be predefined or configured by signaling.
  • the terminal device When the terminal device receives the SCI1 scrambled by the first RNTI, it can determine that the SCI1 is used for unicast data transmission, and the first field of the SCI1 is used to indicate the configuration information of the SCI2 used to schedule the unicast data transmission.
  • the data transmission mode between the first terminal device and the second terminal device is a unicast data transmission mode.
  • the second terminal device may determine the configuration information of the SCI2 for scheduling unicast data transmission according to the first field of the SCI1, and detect the SCI2 according to the configuration information of the SCI2. After obtaining the SCI1 and SCI2, the second terminal device can correctly receive the unicast data sent by the first terminal device.
  • SCI1 when SCI1 uses the first RNTI to scramble, SCI1 is about unicast data transmission.
  • SCI1 contains the transmission resources for the unicast data transmission.
  • SCI1 also contains the priority information of the unicast data transmission.
  • the SCI1 when the SCI1 uses a specific second RNTI for scrambling, the SCI1 is used for multicast data transmission.
  • the second RNTI is used to indicate that the SCI1 is used for multicast data transmission, that is, there is a corresponding relationship between the second RNTI and the SCI1 used for multicast data transmission, and the corresponding relationship may be predefined or configured by signaling.
  • the second RNTI may be a group radio network temporary identifier (G-RNTI).
  • G-RNTI group radio network temporary identifier
  • SCI2 is used to schedule multicast data transmission. That is, there may be a correspondence between the second RNTI and the SCI2 used to schedule multicast data transmission. The corresponding relationship may also be predefined or configured by signaling.
  • the terminal device When receiving the SCI1 scrambled by the second RNTI, the terminal device can determine that the SCI1 is used for multicast data transmission, and the first field of the SCI1 is used to indicate the configuration information of the SCI2 used for scheduling the multicast data transmission. That is, the method for the first terminal device to send data to the second terminal device is a multicast method.
  • the second terminal device may determine the configuration information of the SCI2 for scheduling multicast data transmission according to the first field of the SCI1, and detect the SCI2 according to the configuration information of the SCI2. After obtaining the SCI1 and SCI2, the second terminal device can correctly receive the multicast data sent by the first terminal device.
  • the SCI1 when the SCI1 uses the second RNTI to scramble, the SCI1 is related to multicast data transmission.
  • the SCI1 contains the transmission resources of the multicast data transmission.
  • SCI1 also contains the priority information of the multicast data transmission.
  • the first RNTI is used to implicitly indicate that SCI1 is used for unicast data transmission
  • the second RNTI is used to implicitly indicate that SCI1 is used for multicast data transmission, which is easy to implement and can make the terminal device accurately and quickly determine Whether SCI is used for unicast data transmission or multicast data transmission, it improves the efficiency of terminal equipment to determine the data type scheduled by SCI11.
  • the second terminal device determines whether it belongs to a multicast service, and if it belongs to a multicast service, determines that it is the receiver of SCI2, and detects SCI2.
  • the second terminal device determines whether it belongs to the group of the multicast service, and if it belongs to the group, determines that it is the receiver of the SCI2, and Test SCI2.
  • SCI2 includes configuration information for multicast data transmission or is for unicast data transmission.
  • the configuration information is easy to implement, which enables the terminal device to accurately and quickly determine whether the SCI2 is used for unicast data transmission or multicast data transmission, and improves the efficiency of the terminal device in determining the data type scheduled by the SCI2.
  • the target identifier corresponding to the multicast service or the unicast service may be referred to as the second target identifier.
  • the format identifier of SCI1 is not The first identification or the second identification, SCI1 contains a target identification (target ID) but the target identification does not correspond to the second terminal device, SCI1 contains a target identification but the target identification does not correspond to a unicast service/multicast service, and SCI1 does not contain a target identification When at least one of the (target ID) is satisfied, the SCI1 received by the second terminal device does not satisfy the first condition.
  • the SCI1 is used for broadcast data transmission.
  • SCI1 does not use the first RNTI, SCI1 does not use the second RNTI to scramble, and SCI1 does not use RNTI to scramble
  • SCI1 contains the target ID but the target ID does not correspond to the second terminal device
  • SCI1 contains the target ID but the The target ID does not correspond to the unicast service/multicast service
  • the SCI1 does not include one or more of the target IDs (target ID)
  • the correspondence can be predefined or Signaling configuration.
  • the first field is used to indicate the configuration information of broadcast data transmission.
  • the first field is used to broadcast the configuration information of data transmission. That is, there may be a correspondence between SCI1 not using the first RNTI, SCI1 not using the second RNTI for scrambling, or SCI1 not using the RNTI for scrambling, and the configuration information of the first field for indicating broadcast data transmission.
  • the corresponding relationship may also be predefined or configured by signaling.
  • whether SCI1 meets the first condition is judged by using whether SCI1 is scrambled by RNTI, whether SCI1 is scrambled by first RNTI or second RNTI, or whether SCI1 contains a target identifier, which is easy to implement and can make the first Second, the terminal equipment accurately and quickly determines whether SCI1 meets the first condition, and improves the efficiency and accuracy of determining whether SCI1 meets the first condition.
  • the configuration information of the broadcast data transmission may include the resource information of the broadcast data transmission and so on.
  • the MCS indication field is used to indicate the MCS during broadcast data transmission.
  • the HARQ process number field is used to indicate the number of HARQ processes during broadcast data transmission.
  • the NDI field is used to indicate the NDI during broadcast data transmission.
  • the second terminal device When the second terminal device receives SCI1 that is not scrambled by the first RNTI, the second RNTI, or is not scrambled by the RNTI, it can determine that the SCI1 is used for broadcast data transmission, and the first field of the SCI1 is used to indicate Configuration information for scheduling broadcast data transmission. That is, the method for the first terminal device to send data to the second terminal device is a broadcast method. The second terminal device can determine the relevant configuration information for scheduling broadcast data transmission according to the SCI1, and then can correctly receive the broadcast data sent by the first terminal device.
  • the formats (format identifiers) of SCI1 corresponding to unicast data transmission, multicast data transmission, and broadcast data transmission are the same.
  • the accuracy is High, easy to implement, can reduce the payload size of SCI1, and reduce the complexity of SCI1 detection.
  • the first field is a 5-bit MCS indicator field
  • the first bit in the 5-bit MCS indicator field can be used to indicate the format identifier of SCI2
  • the remaining four-bit field No. The second to fifth bit fields
  • FIG. 4 is a schematic diagram of SCI1 corresponding to unicast data transmission, multicast data transmission, and broadcast data transmission in an embodiment of the application. It can be seen from Figure 4 that the formats of SCI1 corresponding to unicast data transmission, multicast data transmission, and broadcast data transmission are all format A (format A), and SCI1 corresponding to unicast data transmission is scrambled by U-RNTI. SCI1 corresponding to multicast data transmission is scrambled with G-RNTI, and SCI1 corresponding to broadcast data transmission is not scrambled with RNTI.
  • the three types of SCI1 all include a time-frequency resource indicator field and a QoS indicator (such as PPPP) field.
  • the MCS indication field in SCI1 is used as the first field, which is used to indicate the configuration information of scheduling unicast data transmission SCI2 (such as the format ID of SCI2) and scheduling multicast data transmission.
  • SCI2 configuration information for example, SCI2 format ID.
  • the parameter of the first field in SCI1 when the parameter of the first field in SCI1 is greater than or equal to the first threshold, SCI1 also meets the first condition.
  • the parameter of the first field may be understood as the index value (index) of the first field, the value corresponding to the first field, the parameter value corresponding to the first field, or the value of the first field. That is, when the parameter of the first field in SCI1 is greater than or equal to the first threshold, SCI1 is used to schedule unicast data transmission or multicast data transmission.
  • the first field is used to indicate the configuration information of the SCI2, and the second terminal device needs to detect the SCI2.
  • SCI2 is used to schedule unicast data transmission or multicast data transmission.
  • the first threshold may be configured by signaling or predefined.
  • the second terminal device When the parameter of the first field in SCI1 received by the second terminal device is greater than or equal to the first threshold, it can be determined that SCI1 is used for unicast data transmission or multicast data transmission, and the first field of SCI1 is used to indicate SCI2 configuration information for scheduling unicast data transmission or multicast data transmission.
  • the method for the first terminal device to send data to the second terminal device is a unicast method or a multicast method.
  • the second terminal device may determine the configuration information of the SCI2 for scheduling unicast data transmission or multicast data transmission according to the first field of the SCI1, and detect the SCI2 according to the configuration information of the SCI2. After obtaining the SCI1 and SCI2, the second terminal device can correctly receive the unicast data or the multicast data sent by the first terminal device.
  • the SCI1 received by the second terminal device does not meet the first condition, for example, when the parameter of the first field in the SCI1 is less than the first threshold, the SCI1 is used for broadcast data transmission. That is, there is a correspondence between the parameter of the first field in the SCI1 being less than the first threshold and the SCI1 being used for broadcast data transmission, and the correspondence may be predefined or configured by signaling.
  • the second terminal device receives that the parameter of the first field in the SCI1 is less than the first threshold, that is, the SCI1 does not meet the first condition, it can determine that the received SCI1 is used for broadcast data transmission. The second terminal device does not need to detect SCI2.
  • the first field is used to broadcast the configuration information of data transmission. That is, when the parameter of the first field in the SCI1 is less than the first threshold, there may be a correspondence between the configuration information used for indicating the broadcast data transmission in the first field.
  • the corresponding relationship may also be predefined or configured by signaling.
  • the terminal device can accurately and quickly determine that the SCI1 satisfies the first condition, and improve the efficiency and accuracy of determining that the SCI1 satisfies the first condition.
  • the parameter of the first field in the SCI1 received by the second terminal device is less than the first threshold, it may be determined that the SCI1 is used for broadcast data transmission, and the first field of the SCI1 is used to indicate configuration information for scheduling broadcast data transmission. That is, the method for the first terminal device to send data to the second terminal device is a broadcast method.
  • the second terminal device can determine the relevant configuration information for scheduling broadcast data transmission according to the SCI1, and then can correctly receive the broadcast data sent by the first terminal device.
  • a matching relationship table can be pre-configured or pre-defined.
  • the table contains the corresponding relationship between the parameters of the first field and the configuration information of SCI2.
  • the configuration information of SCI2 can include the format ID, aggregation level, and resource area of SCI2.
  • the distance limitation required for feedback can be understood as: in a certain distance range from the first terminal device, terminal devices in the same group within the range need to perform HARQ feedback.
  • the second terminal determines that it is the receiver of the SCI2, and detects the SCI2.
  • the terminal device can quickly and accurately determine the configuration information of the second SCI according to the parameters of the first field, which improves the efficiency of determining the second SCI.
  • reserved bits in the MCS table can be used to indicate the configuration information of SCI2 for scheduling unicast data transmission or scheduling multicast data transmission.
  • the current MCS table can be revised to Table 4, where Table 5 contains MCS, redundancy version (RV) and index when MCS is less than the first threshold.
  • Table 5 contains MCS, redundancy version (RV) and index when MCS is less than the first threshold.
  • QPSK quadrature phase shift keying
  • BPSK Binary Phase Shift Keying
  • 64QAM 64 quadrature amplitude modulation (64 quadrature amplitude modulation, 64QAM) , These types are different modulation methods.
  • the first threshold is X and the parameter of the first field is index.
  • the index of the first field is less than X, that is, SCI1 does not meet the first condition
  • the SCI1 is used for broadcast data transmission
  • the first field is used to indicate MCS and RV for broadcast data transmission.
  • the index of the first field is greater than X, that is, SCI1 meets the first condition
  • SCI1 is used to schedule unicast data transmission or multicast data transmission.
  • the first field is used to indicate the configuration information of SCI2.
  • the first field indicates the format ID and aggregation level of SCI2.
  • SCI2 is used to schedule unicast data transmission or multicast data transmission.
  • Table 4 is only exemplary, and should not impose any restrictions on the parameters of the first field, the first threshold, and the configuration information of SCI2 in this application.
  • the first bit of the first field when the parameter of the first field is greater than or the first threshold, the first bit of the first field may be used to indicate whether the SCI1 is used for scheduling unicast data transmission or not. In order to schedule multicast data transmission, it then indicates whether SCI2 is used to schedule unicast data transmission or to schedule multicast data transmission. For example, if the first bit of the first field is 0, it means that SCI1 is used to schedule unicast data transmission, and SCI2 is used to schedule unicast data transmission. The first bit of the first field is 1, indicating that SCI1 is used to schedule multicast data transmission, and SCI2 is used to schedule multicast data transmission.
  • the first bit of the first field is 1, it means that SCI1 is used to schedule unicast data transmission, and SCI2 is used to schedule unicast data transmission.
  • the first bit of the first field is 0, which means that SCI1 is used to schedule multicast data transmission, and SCI2 is used to schedule multicast data transmission.
  • the formats of SCI1 corresponding to unicast data transmission, multicast data transmission, and broadcast data transmission are the same, and the SCI1 corresponding to different service types can be distinguished by comparing the parameters of the first field in SCI1 with the first threshold.
  • High accuracy, easy to implement, can reduce the load (payload size) of SCI1, and reduce the complexity of SCI1 detection.
  • SCI1 when comparing the parameters of the first field in SCI1 with the first threshold to distinguish SCI1 corresponding to different service types, SCI1 can use the first RNTI to scramble or use the second RNTI to scramble. Disturb. Or, SCI1 may not be scrambled by RNTI, SCI1 may not be scrambled by the first RNTI, or by the second RNTI. This application is not restricted here.
  • unicast data transmission, multicast data transmission, and broadcast data transmission may share SCI1.
  • the formats of the three SCI1s corresponding to unicast data transmission, multicast data transmission, and broadcast data transmission may be different, but the payload size of the three SCI1s is the same. That is, different SCI1 formats are used to distinguish SCI1 corresponding to different business types.
  • the three types of SCI1 all include the first field, and the position of the first field in the three types of SCI1 is the same.
  • the SCI1 when the format ID of the SCI1 received by the second terminal device is the first identifier, that is, the SCI1 satisfies the first condition. Since the first identifier is an SCI format identifier corresponding to the unicast service data, the SCI1 is used for unicast data transmission. That is, there is a corresponding relationship between the format identifier of the first identifier SCI1 and the SCI1 used for unicast data transmission, and the corresponding relationship may be predefined or configured by signaling.
  • the second terminal device When the second terminal device receives the format identifier of the SCI1 as the first identifier, that is, the SCI1 satisfies the first condition, it can determine that the received SCI1 is used for unicast data transmission. In addition, it can also be determined that the first field is used to indicate the configuration information of the SCI2, and the second terminal device needs to detect the SCI2.
  • SCI2 is used to schedule unicast data transmission. That is, there may be a correspondence between the first identifier and the SCI2 used to schedule unicast data transmission. The corresponding relationship may also be predefined or configured by signaling.
  • the terminal device When the terminal device receives the SCI1 whose format identifier is the first identifier, it can determine that the SCI1 is used for unicast data transmission, and the first field of the SCI1 is used to indicate the configuration information of the SCI2 used to schedule the unicast data transmission.
  • the data transmission mode between the first terminal device and the second terminal device is a unicast data transmission mode.
  • the second terminal device may determine the configuration information of the SCI2 for scheduling unicast data transmission according to the first field of the SCI1, and detect the SCI2 according to the configuration information of the SCI2. After obtaining the SCI1 and SCI2, the second terminal device can correctly receive the unicast data sent by the first terminal device.
  • the second terminal device receives the SCI1 whose format identifier is the first identifier, that is, the SCI1 satisfies the first condition, it can be determined that the second terminal device needs to detect the SCI2.
  • the second identifier corresponds to the SCI format identifier of the multicast service data, that is, the format ID received by the second terminal device
  • the format identification of SCI1 is the second identification, and SCI1 meets the first condition. Since the second identifier corresponds to the multicast service data, the SCI1 is used for multicast data transmission. That is, there is a correspondence between the SCI1 and the SCI1 whose format identifier is the second identifier used for multicast data transmission, and the correspondence may be predefined or configured by signaling.
  • the second terminal device When the second terminal device receives the format identifier of the SCI1 as the second identifier, that is, the SCI1 satisfies the first condition, it can determine that the received SCI1 is used for multicast data transmission. In addition, it can also be determined that the first field is used to indicate the configuration information of the SCI2, and the second terminal device needs to detect the SCI2.
  • SCI2 is used to schedule multicast data transmission. That is, there may be a correspondence between the second identifier and the SCI2 used for scheduling multicast data transmission. The corresponding relationship may also be predefined or configured by signaling.
  • the terminal device When the terminal device receives the SCI1 whose format identifier is the second identifier, it can determine that the SCI1 is used for multicast data transmission, and the first field of the SCI1 is used to indicate the configuration information of the SCI2 used for scheduling the multicast data transmission.
  • the method for the first terminal device to send data to the second terminal device is a multicast method.
  • the second terminal device may determine the configuration information of the SCI2 for scheduling multicast data transmission according to the first field of the SCI1, and detect the SCI2 according to the configuration information of the SCI2. After obtaining the SCI1 and SCI2, the second terminal device can correctly receive the multicast data sent by the first terminal device.
  • the second terminal device receives the SCI1 whose format identifier is the second identifier, that is, the SCI1 satisfies the first condition, it can be determined that the second terminal device needs to detect the SCI2.
  • the first identifier and the second identifier may be different.
  • the format identifier of SCI1 when used to schedule unicast data, is format A, and when used to schedule unicast data, the format of SCI1 If the identifier is format B, the first identifier is A, and the second identifier is B.
  • the SCI1 received by the second terminal device does not meet the first condition, for example, the format ID of the SCI1 received by the second terminal device is not the above-mentioned first and second identifiers, or in other words, the second terminal
  • the SCI1 is used for broadcast data transmission. That is, there is a correspondence between SCI1 and SCI1 identified in other formats for broadcast data transmission, and the correspondence may be predefined or configured by signaling.
  • the second terminal device receives SCI1 in other formats, that is, SCI1 does not meet the first condition, it can determine that the received SCI1 is used for broadcast data transmission.
  • the second terminal device does not need to detect SCI2.
  • the second terminal device receives SCI1 in other formats, that is, SCI1 does not meet the first condition, it may be determined that the second terminal device does not need to detect SCI2.
  • the first field in the SCI1 is used to broadcast the configuration information of data transmission. That is, the first field in the SCI1 and SCI1 identified by other formats is used to indicate that there may be a correspondence between the configuration information of the broadcast data transmission.
  • the corresponding relationship may also be predefined or configured by signaling.
  • the second terminal device When the second terminal device receives SCI1 in other formats, it can determine that SCI1 is used for broadcast data transmission, and the first field of SCI1 is used to indicate configuration information for scheduling broadcast data transmission. That is, the method for the first terminal device to send data to the second terminal device is a broadcast method. The second terminal device can determine the relevant configuration information for scheduling broadcast data transmission according to the SCI1, and then can correctly receive the broadcast data sent by the first terminal device.
  • unicast data transmission, multicast data transmission, and broadcast data transmission respectively correspond to SCI1 in different formats, but the payload size of the three SCI1 is the same.
  • formats format ID
  • the accuracy is high, and it is easy to implement, which can reduce the load of SCI1 and reduce the complexity of SCI1 detection.
  • the SCI1 format corresponding to different service types is different, but the load can be the same.
  • the information bit position configuration can be notified to the first terminal device and the second terminal device by the network device through high-level signaling, and the above information bit position configuration is the same for the three formats of SCI1. That is, the information bit position configuration in the high-level signaling can be shared to indicate the interpretation of SCI1 in three formats.
  • the one used for broadcast data transmission includes a first field (take the MCS field as an example) to indicate the MCS, and the MCS field with the same bit position is in the unicast/multicast SCI1
  • the format of is used to indicate the SCI2 format ID and aggregation level.
  • FIG. 5 is a schematic diagram of SCI1 corresponding to unicast data transmission, multicast data transmission, and broadcast data transmission in an embodiment of the application. It can be seen from Figure 5 that the formats of SCI1 corresponding to unicast data transmission, multicast data transmission, and broadcast data transmission are different, but the payload size is the same.
  • the position of the first field (MCS indicator field) in the three types of SCI1 is the same.
  • the MCS indication field in SCI1 is used as the first field, which is used to indicate the configuration information of scheduling unicast data transmission SCI2 (such as the format ID of SCI2) and scheduling multicast data transmission.
  • SCI2 configuration information for example, SCI2 format ID
  • the first field is used to indicate the MCS during broadcast data transmission.
  • the configuration information of SCI2 includes:
  • the terminal device can detect the second SCI more quickly, reducing the complexity of detecting the second SCI by the terminal device, and reducing the power consumption of the terminal device.
  • the configuration information of SCI2 may also include other information used to detect SCI2.
  • the embodiments of the application are not limited here.
  • SCI1 of different formats when SCI1 of different formats is used to distinguish SCI1 corresponding to different service types, SCI1 of different formats may be added by using different RNTIs. For example, SCI1 corresponding to broadcast data is not scrambled using RNTI, SCI1 corresponding to unicast data is scrambled using the first RNTI, and SCI1 corresponding to multicast data is scrambled using the second RNTI.
  • thresholds can be configured for the first field parameters in SCI1 of different formats, and the values of SCI1 of different formats are used.
  • the relationship between the first field parameter and the corresponding threshold can also distinguish SCI1 corresponding to different service types.
  • the predefined can be understood as defined by the protocol.
  • the signaling configuration can be understood as configured by high-level or physical layer signaling.
  • the high-level signaling may include, for example, radio resource control (radio resource control, RRC), medium access control (medium access control, MAC) control element (CE), and radio link control (radio link control, RLC). Signaling etc.
  • the physical layer signaling may include, for example, DCI, SCI, and so on.
  • all the configurations configured by signaling may be configured by the network device to the terminal device through the foregoing signaling.
  • the side link control information transmission method provided in this application shares the SCI1 for data transmission through a unicast transmission mode, a multicast transmission mode, and a broadcast transmission mode.
  • the SCI1 format and/or payload (payload size) corresponding to the three service types are the same, and the parameter values of the first field in RNTI, SCI1, or the format ID of SCI1 are used to distinguish SCI1 corresponding to different service types.
  • the field of the SCI1 is further used to indicate the relevant configuration information of the SCI2.
  • SCI1 can be shared by three services, which can reduce the detection complexity of SCI1.
  • the detection complexity of SCI2 is reduced, the efficiency of obtaining SCI2 by terminal equipment is improved, communication resources are saved, and communication efficiency is improved.
  • the first, the second, etc. are only for ease of description.
  • the first RNTI entity and the second RNTI entity are only used to indicate different RNTIs. It should not have any influence on the RNTI itself and the number, and the above-mentioned first, second, etc. should not cause any limitation to the embodiments of the present application.
  • pre-set and pre-defined can be achieved by pre-saving corresponding codes, tables, or other methods that can be used to indicate related information in devices (for example, including terminals and network devices). To achieve, this application does not limit its specific implementation.
  • FIG. 6 shows a schematic block diagram of a communication device 300 according to an embodiment of the present application.
  • the device 300 may correspond to the second terminal device described in the above method 200, or may be a chip or component applied to the second terminal device, and Each module or unit in the device 300 is respectively used to execute each action or processing procedure performed by the second terminal device in the above method 200.
  • the device 300 includes a transceiver unit 310 and a processing unit 320.
  • the transceiving unit 310 is configured to perform specific signal transceiving under the driving of the processing unit 320.
  • the transceiver unit 310 is configured to receive first side link control information SCI, where the first SCI includes a first field;
  • the processing unit 320 is configured to determine whether the first SCI satisfies the first condition
  • the first field is used to indicate the configuration information of the second SCI, where the second SCI is used to schedule unicast data transmission or multicast data transmission;
  • the first field is used to indicate the configuration information of broadcast data transmission
  • the first condition includes at least one of the following conditions:
  • the first SCI uses the wireless network temporary identification RNTI to scramble, the first SCI uses the first wireless network temporary identification RNTI or the second RNTI to scramble, the parameter of the first field is greater than or equal to the first threshold, the first SCI
  • the format identifier is the first identifier or the second identifier.
  • the communication device provided by the present application shares the first SCI through unicast data transmission, multicast data transmission, and broadcast data transmission.
  • the first SCI can be shared by three types of services, which can reduce the detection complexity of the first SCI.
  • the SCI1 satisfies the first condition, that is, in the unicast transmission mode or the multicast transmission mode
  • the first field of the first SCI is further used to indicate the related configuration information of the second SCI, and the second SCI is reduced.
  • the detection complexity improves the efficiency of the terminal device to obtain the second SCI, saves communication resources, and improves the communication efficiency.
  • that the first SCI satisfies the first condition includes:
  • the first SCI uses RNTI to scramble, the first SCI uses the first RNTI to scramble, the first SCI uses the second RNTI to scramble, the parameter of the first field is greater than or equal to the first threshold, the format ID of the first SCI ) Is the first identifier, the first SCI includes a target ID (target ID) and the target identifier corresponds to the terminal device that receives the first SCI, the first SCI includes the target identifier, and the target identifier corresponds to the unicast service/multicast service If at least one is satisfied, the first SCI meets the first condition.
  • target ID target ID
  • target identifier corresponds to the terminal device that receives the first SCI
  • the first SCI includes the target identifier
  • the target identifier corresponds to the unicast service/multicast service If at least one is satisfied, the first SCI meets the first condition.
  • the first RNTI when the first SCI uses the first RNTI for scrambling, the first RNTI is used to indicate that the first SCI is used for unicast data transmission;
  • the second RNTI is used to indicate that the first SCI is used for multicast data transmission.
  • the first field is used to indicate configuration information of the second SCI used to schedule unicast data transmission
  • the first field is used to indicate the configuration information of the second SCI used for scheduling multicast data transmission.
  • the parameter of the first field when the parameter of the first field is greater than or equal to the first threshold, there is a correspondence between the parameter of the first field and the configuration information of the second SCI.
  • the first field is used to indicate the configuration information of the second SCI used to schedule unicast data transmission
  • the first field is used to indicate the configuration information of the second SCI used for scheduling multicast data transmission.
  • the failure of the first SCI to meet the first condition includes: the first SCI does not use RNTI scrambling, and the first SCI does not use the first SCI.
  • the configuration information of the second SCI includes:
  • the first field includes:
  • Modulation and coding MCS indicator field, hybrid automatic repeat request HARQ process number indicator field, new data indicator field, redundancy version indicator field or multi-antenna related indicator field at least one or a combination of multiple.
  • the device 300 may also include a storage unit, and the transceiver unit 310 may be a transceiver, an input/output interface, or an interface circuit.
  • the storage unit is used to store instructions executed by the transceiver unit 310 and the processing unit 320.
  • the transceiving unit 310, the processing unit 320, and the storage unit are coupled with each other.
  • the storage unit stores instructions, the processing unit 320 is used to execute the instructions stored in the storage unit, and the transceiving unit 310 is used to perform specific signal transceiving under the driving of the processing unit 320.
  • the transceiving unit 310 may include a receiving unit (module) and a sending unit (module), which are used to execute each embodiment of the aforementioned method 200 and the second terminal device in the embodiment shown in FIG. 3 receives information and sends information. step.
  • the transceiver unit 310 may be a transceiver, an input/output interface, or an interface circuit.
  • the storage unit may be a memory.
  • the processing unit 320 may be implemented by a processor.
  • the communication device 400 may include a processor 410, a memory 420, a transceiver 430, and a bus system 440.
  • the various components of the communication device 400 are coupled together through a bus system 440, where the bus system 440 may include a power bus, a control bus, a status signal bus, etc., in addition to a data bus.
  • various buses are marked as the bus system 440 in FIG. 7.
  • FIG. 7 is only schematically drawn.
  • the communication device 300 shown in FIG. 6 or the communication device 400 shown in FIG. 7 can implement the various embodiments of the foregoing method 200 and the steps performed by the second terminal device in the embodiment shown in FIG. 3. For similar descriptions, reference can be made to the descriptions in the aforementioned corresponding methods. To avoid repetition, I won’t repeat them here.
  • the communication device 300 shown in FIG. 6 or the communication device 400 shown in FIG. 7 may be a terminal device.
  • FIG. 8 shows a schematic block diagram of a communication device 500 according to an embodiment of the present application.
  • the device 500 may correspond to the second terminal device described in the above method 200, or may be a chip or component applied to the first terminal device, and, Each module or unit in the device 500 is respectively used to execute each action or processing procedure performed by the first terminal device in the above method 200.
  • the device 500 may include a processing unit 510 and a transceiving unit 520.
  • the transceiving unit 520 is configured to perform specific signal transceiving under the driving of the processing unit 510.
  • the processing unit 510 is configured to generate first side uplink control information SCI, where the first SCI includes a first field;
  • the transceiver unit 520 is configured to send the first SCI
  • the first field is used to indicate the configuration information of the second SCI
  • the second SCI is used to schedule unicast data transmission or multicast data transmission
  • the first field is used to indicate the configuration information of the broadcast data transmission
  • the first condition includes at least one of the following conditions:
  • the first SCI uses the wireless network temporary identifier RNTI to scramble, the first SCI uses the first RNTI or the second RNTI to scramble, the parameter of the first field is greater than or equal to the first threshold, and the format identifier of the first SCI is the first One logo or second logo.
  • the communication device provided in the present application shares the first SCI through unicast data transmission, multicast data transmission, and broadcast data transmission, and the communication device sends the first SCI.
  • the first SCI can be shared by the three services, which can reduce the detection complexity of the first SCI.
  • the SCI1 satisfies the first condition, that is, in the unicast transmission mode or the multicast transmission mode
  • the first field of the first SCI is further used to indicate the related configuration information of the second SCI, and the second SCI is reduced.
  • the detection complexity improves the efficiency of the terminal device to obtain the second SCI, saves communication resources, and improves the communication efficiency.
  • that the first SCI satisfies the first condition includes:
  • the first SCI uses RNTI to scramble, the first SCI uses the first RNTI to scramble, the first SCI uses the second RNTI to scramble, the parameter of the first field is greater than or equal to the first threshold, the format ID of the first SCI ) Is the first identifier, the first SCI includes a target ID (target ID) and the target identifier corresponds to the terminal device that receives the first SCI, the first SCI includes the target identifier, and the target identifier corresponds to the unicast service/multicast service If at least one is satisfied, the first SCI meets the first condition.
  • target ID target ID
  • target identifier corresponds to the terminal device that receives the first SCI
  • the first SCI includes the target identifier
  • the target identifier corresponds to the unicast service/multicast service If at least one is satisfied, the first SCI meets the first condition.
  • the first RNTI when the first SCI uses the first RNTI for scrambling, the first RNTI is used to indicate that the first SCI is used for unicast data transmission;
  • the second RNTI is used to indicate that the first SCI is used for multicast data transmission.
  • the first field is used to indicate configuration information of the second SCI used to schedule unicast data transmission
  • the first field is used to indicate the configuration information of the second SCI used for scheduling multicast data transmission.
  • the parameter of the first field when the parameter of the first field is greater than or equal to the first threshold, there is a correspondence between the parameter of the first field and the configuration information of the second SCI.
  • the first field is used to indicate the configuration information of the second SCI for scheduling unicast data transmission ;
  • the first field is used to indicate the configuration information of the second SCI used for scheduling multicast data transmission.
  • that the first SCI does not meet the first condition includes:
  • the first SCI is not scrambled by RNTI, the first SCI is not scrambled by the first RNTI, the first SCI is not scrambled by the second RNTI, the parameter of the first field is less than the first threshold, the format identifier of the first SCI (format ID) is not the first identification or the second identification, the first SCI contains a target ID but the target ID does not correspond to the terminal device that receives the first SCI, the first SCI contains the target ID but the target ID does not correspond to the single If at least one of the broadcast service/multicast service and the first SCI does not contain the target identifier is satisfied, the first SCI does not satisfy the first condition.
  • the configuration information of the second SCI includes:
  • the first field includes:
  • Modulation and coding MCS indicator field, hybrid automatic repeat request HARQ process number indicator field, new data indicator field, redundancy version indicator field or multi-antenna related indicator field at least one or a combination of multiple.
  • the device 500 may also include a storage unit, and the transceiving unit 520 may be a transceiver, an input/output interface, or an interface circuit.
  • the storage unit is used to store instructions executed by the transceiver unit 520 and the processing unit 510.
  • the transceiving unit 520, the processing unit 510, and the storage unit are coupled to each other, the storage unit stores instructions, the processing unit 510 is used to execute the instructions stored in the storage unit, and the transceiving unit 520 is used to perform specific signal transceiving under the driving of the processing unit 510.
  • the transceiving unit 520 may include a receiving unit (module) and a sending unit (module), which are used to execute each embodiment of the foregoing method 200 and the first terminal device in the embodiment shown in FIG. 5 to receive information and send information. step.
  • the transceiving unit 520 may be a transceiver, an input/output interface, or an interface circuit.
  • the storage unit may be a memory.
  • the processing unit 520 may be implemented by a processor.
  • the communication device 600 may include a processor 610, a memory 620, a transceiver 630, and a bus system 660.
  • the components of the communication device 600 are coupled together through a bus system 660, where the bus system 660 may include a power bus, a control bus, a status signal bus, etc., in addition to a data bus.
  • various buses are marked as the bus system 440 in FIG. 9.
  • FIG. 9 is only schematically drawn.
  • the communication device 500 shown in FIG. 8 or the communication device 600 shown in FIG. 6 can implement the various embodiments of the foregoing method 200 and the steps performed by the second terminal device in the embodiment shown in FIG. 3. For similar descriptions, reference can be made to the descriptions in the aforementioned corresponding methods. To avoid repetition, I won’t repeat them here.
  • the communication device 500 shown in FIG. 8 or the communication device 600 shown in FIG. 9 may be a terminal device.
  • each unit in the device can be all implemented in the form of software called by processing elements; they can also be all implemented in the form of hardware; part of the units can also be implemented in the form of software called by the processing elements, and some of the units can be implemented in the form of hardware.
  • each unit can be a separate processing element, or it can be integrated in a certain chip of the device for implementation.
  • it can also be stored in the memory in the form of a program, which is called and executed by a certain processing element of the device.
  • the processing element may also be called a processor, and may be an integrated circuit with signal processing capability.
  • each step of the above method or each of the above units may be implemented by an integrated logic circuit of hardware in a processor element or implemented in a form of being called by software through a processing element.
  • the unit in any of the above devices may be one or more integrated circuits configured to implement the above methods, for example: one or more application specific integrated circuits (ASIC), or, one or Multiple digital signal processors (digital signal processors, DSP), or, one or more field programmable gate arrays (FPGA), or a combination of at least two of these integrated circuits.
  • ASIC application specific integrated circuits
  • DSP digital signal processors
  • FPGA field programmable gate arrays
  • the unit in the device can be implemented in the form of a processing element scheduler
  • the processing element can be a general-purpose processor, such as a central processing unit (CPU) or other processors that can call programs.
  • CPU central processing unit
  • these units can be integrated together and implemented in the form of a system-on-a-chip (SOC).
  • FIG. 10 is a schematic structural diagram of a terminal device 700 provided by this application.
  • the foregoing apparatus 300, 400, 500, or 600 may be configured in the terminal device 700, or the apparatus 300, 400, 500, or 600 itself may be the terminal device 700.
  • the terminal device 700 may execute the actions performed by the first terminal device or the second terminal device in the above method 200.
  • FIG. 10 only shows the main components of the terminal device.
  • the terminal device 700 includes a processor, a memory, a control circuit, an antenna, and an input and output device.
  • the processor is mainly used to process the communication protocol and communication data, and to control the entire terminal device, execute the software program, and process the data of the software program. For example, it is used to support the terminal device to execute the above-mentioned transmission precoding matrix instruction method embodiment.
  • the memory is mainly used to store software programs and data, for example, to store the codebook described in the above embodiments.
  • the control circuit is mainly used for the conversion of baseband signals and radio frequency signals and the processing of radio frequency signals.
  • the control circuit and the antenna together can also be called a transceiver, which is mainly used to send and receive radio frequency signals in the form of electromagnetic waves.
  • Input and output devices such as touch screens, display screens, keyboards, etc., are mainly used to receive data input by users and output data to users.
  • the processor can read the software program in the storage unit, interpret and execute the instructions of the software program, and process the data of the software program.
  • the processor performs baseband processing on the data to be sent, and outputs the baseband signal to the radio frequency circuit.
  • the radio frequency circuit performs radio frequency processing on the baseband signal and 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. 10 only shows a memory and a processor. In an actual terminal device, there may be multiple processors and memories.
  • the memory may also be referred to as a storage medium or a storage device, etc., which is not limited in the embodiment of the present application.
  • the processor may include a baseband processor and a central processing unit.
  • the baseband processor is mainly used to process communication protocols and communication data.
  • the central processing unit is mainly used to control the entire terminal device, execute software programs, and process software programs. data.
  • the processor in FIG. 10 integrates the functions of the baseband processor and the central processing unit.
  • the baseband processor and the central processing unit may also be independent processors, and are interconnected by technologies such as a bus.
  • the terminal device may include multiple baseband processors to adapt to different network standards, the terminal device may include multiple central processors to enhance its processing capabilities, and the various components of the terminal device may be connected through various buses.
  • the baseband processor can also be expressed as a baseband processing circuit or a baseband processing chip.
  • the central processing unit can also be expressed as a central processing circuit or a central processing chip.
  • the function of processing the communication protocol and the communication data may be built in the processor, or stored in the storage unit in the form of a software program, and the processor executes the software program to realize the baseband processing function.
  • the antenna and control circuit with the transceiver function may be regarded as the transceiver unit 701 of the terminal device 700, and the processor with the processing function may be regarded as the processing unit 702 of the terminal device 700.
  • the terminal device 700 includes a transceiving unit 701 and a processing unit 702.
  • the transceiving unit may also be referred to as a transceiver, a transceiver, a transceiving device, and so on.
  • the device for implementing the receiving function in the transceiving unit 701 can be regarded as the receiving unit, and the device for implementing the sending function in the transceiving unit 701 can be regarded as the sending unit, that is, the transceiving unit 701 includes a receiving unit and a sending unit.
  • the receiving unit may also be called a receiver, a receiver, a receiving circuit, etc.
  • the sending unit may be called a transmitter, a transmitter, or a transmitting circuit, etc.
  • FIG. 11 is a schematic structural diagram of another terminal device 800 provided by this application.
  • the terminal device includes a processor 810, a data sending processor 820, and a data receiving processor 830.
  • the processing unit 320 or the processing unit 510 in the foregoing embodiment may be the processor 810 in FIG. 11 and perform corresponding functions.
  • the transceiving unit 310 in the foregoing embodiment may be the sending data processor 820 and/or the receiving data processor 830 in FIG. 11.
  • the channel encoder and the channel decoder are shown in FIG. 11, it can be understood that these modules do not constitute a restrictive description of this embodiment, and are only illustrative.
  • the processor may be a central processing unit (central processing unit, CPU), and the processor may also be other general-purpose processors, digital signal processors (digital signal processors, DSP), and 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 in the embodiments of the present application may be volatile memory or 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 electrically available 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
  • DRAM dynamic random access memory
  • DRAM synchronous dynamic random access memory
  • 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 Take memory (synchlink DRAM, SLDRAM) and direct memory bus random access memory (direct rambus RAM, DR RAM).
  • the foregoing embodiments may be implemented in whole or in part by software, hardware, firmware or any other combination.
  • the above-mentioned embodiments may be implemented in the form of a computer program product in whole or in part.
  • the computer program product includes one or more computer instructions or computer programs.
  • the computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices.
  • the computer instruction may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium.
  • the computer instruction may be transmitted from a website, a computer, a server, or a data center through a cable (For example, infrared, wireless, microwave, etc.) to transmit to another website, computer, server or data center.
  • the computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or a data center that includes one or more sets of available media.
  • the usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a DVD), or a semiconductor medium.
  • the semiconductor medium may be a solid state drive.
  • An embodiment of the present application also provides a communication system, which includes: the above-mentioned first terminal device and the above-mentioned second terminal device.
  • the communication system may also include network equipment.
  • the embodiment of the present application also provides a computer-readable medium for storing computer program code, and the computer program includes instructions for executing the method 200 for sidelink control information transmission in the embodiment of the present application.
  • the readable medium may be a read-only memory (ROM) or a random access memory (RAM), which is not limited in the embodiment of the present application.
  • the computer program product includes instructions. When the instructions are executed, the first terminal device and the second terminal device respectively execute the first terminal device and the second terminal device corresponding to the above method. Operation of terminal equipment.
  • the embodiment of the application also provides a chip, the chip includes: a processor, used to call and run a computer program from the memory, so that the first terminal device and the second terminal device installed with the chip respectively execute the method corresponding to the above The operation of the first terminal device and the second terminal device.
  • the embodiment of the present application also provides a system chip.
  • the system chip includes a processing unit and a communication unit.
  • the processing unit may be, for example, a processor, and the communication unit may be, for example, an input/output interface, a pin, or a circuit.
  • the processing unit can execute computer instructions, so that the chip in the communication device executes any of the methods for transmitting sidelink control information provided in the foregoing embodiments of the present application.
  • any communication device provided in the foregoing embodiments of the present application may include the system chip.
  • the computer instructions are stored in a storage unit.
  • the storage unit is a storage unit in the chip, such as a register, a cache, etc.
  • the storage unit can also be a storage unit in the terminal located outside the chip, such as a ROM or other storage units that can store static information and instructions.
  • static storage devices RAM, etc.
  • the processor mentioned in any of the above can be a CPU, a microprocessor, an ASIC, or one or more integrated circuits used for program execution of the method for controlling the above-mentioned main system information transmission.
  • the processing unit and the storage unit can be decoupled, respectively set on different physical devices, and connected in a wired or wireless manner to realize the respective functions of the processing unit and the storage unit, so as to support the system chip to implement the above-mentioned embodiments Various functions in.
  • the processing unit and the memory may also be coupled to the same device.
  • the memory 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 electrically available 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
  • DRAM dynamic random access memory
  • DRAM synchronous dynamic random access memory
  • 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 Take memory (synchlink DRAM, SLDRAM) and direct memory bus random access memory (direct rambus RAM, DR RAM).
  • system and "network” in this article are often used interchangeably in this article.
  • and/or in this article is only an association relationship describing the associated objects, which means that there can be three relationships, for example, A and/or B, which can mean: A alone exists, A and B exist at the same time, exist alone B these three situations.
  • the character "/" in this text generally indicates that the associated objects before and after are in an "or” relationship.
  • uplink and downlink appearing in this application are used to describe the direction of data/information transmission in a specific scenario.
  • the "uplink” direction generally refers to the direction or distribution of data/information from the terminal to the network side.
  • the “downlink” direction generally refers to the direction in which data/information is transmitted from the network side to the terminal, or the direction in which the centralized unit transmits to the distributed unit.
  • uplink and downlink “It is only used to describe the direction of data/information transmission, and the specific start and end equipment of the data/information transmission is not limited.
  • the disclosed system, device, and method may be implemented in other ways.
  • the device embodiments described above are only illustrative.
  • the division of the unit is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components may be combined or may be Integrate 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 unit described as a separate component may or may not be physically separated, and the component displayed as a unit may or may not be a physical unit, that is, it may be located in one place, or may also 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.
  • the functional units in the various embodiments 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.
  • this 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 the present 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 in each embodiment of the present application.
  • the aforementioned storage media include: U disk, mobile hard disk, read-only memory (ROM), and random access.

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  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
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Abstract

Procédé de transmission d'informations de commande de liaison latérale et appareil de communication. Le procédé peut être appliqué à des systèmes, tels que l'Internet des véhicules, V2X et V2V. Le procédé consiste à : recevoir des SCI de première étape, les SCI de première étape comprenant un premier champ ; et déterminer si les SCI de première étape satisfont ou non à une première condition, et lorsque les SCI de première étape satisfont à la première condition, utiliser le premier champ pour indiquer des informations de configuration de SCI de seconde étape, et utiliser les SCI de seconde étape pour planifier une transmission de données de monodiffusion ou une transmission de données de multidiffusion ; et lorsque les SCI de première étape ne satisfont pas à la première condition, utiliser le premier champ pour indiquer des informations de configuration de transmission de données de diffusion. Selon le procédé décrit dans la présente invention, un mode de transmission de monodiffusion, un mode de transmission de multidiffusion et un mode de transmission de diffusion partagent des SCI de première étape ; et dans le mode de transmission de monodiffusion ou de multidiffusion, un premier champ est utilisé pour indiquer des informations de configuration de SCI de seconde étape. La complexité de détection de SCI est ainsi réduite.
PCT/CN2019/109187 2019-09-29 2019-09-29 Procédé de transmission d'informations de commande de liaison latérale et appareil de communication WO2021056565A1 (fr)

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CN201980100526.8A CN114424594A (zh) 2019-09-29 2019-09-29 侧行链路控制信息传输的方法和通信装置

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Citations (3)

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CN106797635A (zh) * 2014-09-03 2017-05-31 华为技术有限公司 用于d2d资源分配的系统和方法
WO2018201384A1 (fr) * 2017-05-04 2018-11-08 Zte Corporation Appareil et procédé de communications de liaison latérale
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