WO2021088063A1 - Procédé et dispositif de communication - Google Patents

Procédé et dispositif de communication Download PDF

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Publication number
WO2021088063A1
WO2021088063A1 PCT/CN2019/116863 CN2019116863W WO2021088063A1 WO 2021088063 A1 WO2021088063 A1 WO 2021088063A1 CN 2019116863 W CN2019116863 W CN 2019116863W WO 2021088063 A1 WO2021088063 A1 WO 2021088063A1
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WIPO (PCT)
Prior art keywords
energy detection
detection threshold
corresponds
offset
threshold
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PCT/CN2019/116863
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English (en)
Chinese (zh)
Inventor
刘哲
温容慧
黎超
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华为技术有限公司
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Priority to PCT/CN2019/116863 priority Critical patent/WO2021088063A1/fr
Priority to CN201980101667.1A priority patent/CN114600525A/zh
Publication of WO2021088063A1 publication Critical patent/WO2021088063A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation

Definitions

  • This application relates to the field of mobile communication technology, and in particular to a communication method and device.
  • V2X vehicle-to-everything
  • V2X includes direct communication between vehicle-to-vehicle (V2V), vehicle-to-infrastructure (V2I), vehicle-to-pedestrian (V2P), and Vehicle-to-network (V2N) communication interaction. Except for V2N vehicles and network communication which use uplink and downlink, the other V2V/V2I/V2P data communication uses sidelink (SL) for communication.
  • V2V vehicle-to-vehicle
  • V2I vehicle-to-infrastructure
  • V2P vehicle-to-pedestrian
  • V2N Vehicle-to-network
  • SL sidelink
  • Mode1 means that a network device, such as a base station or a relay station, allocates resources to terminal devices through scheduling.
  • Mode2 means that the network device allocates a block of resources in advance (referred to as a resource pool in the following), and the terminal device autonomously selects available resources in the resource pool for data transmission. When the terminal device selects available resources, it will listen (sensing) to the resources of the resource pool and obtain the sensing result.
  • Sensing refers to listening to the occupancy of different time-frequency resources in a resource pool over a period of time, for example, energy detection is used to select transmission resources that are not currently occupied in the resource pool for transmission. If energy detection is performed on a certain resource unit in the resource pool, for example, a reference signal received power (RSRP) measurement result exceeds a certain threshold, then the resource unit can be considered to be occupied.
  • RSRP reference signal received power
  • V2X communication can have three transmission methods: broadcast, groupcast, or unicast, and the terminal devices of these three transmission methods can all be in the same resource pool. Select resources. If there are at least two transmission modes at the same time, the power of the terminal devices using different transmission modes to send data is quite different. In this way, multiple terminal devices may select the same resource to send data, causing resource interference and resource conflict.
  • the embodiments of the present application provide a communication method and device, which can reduce interference and resource conflicts between resources for sending data by multiple terminal devices.
  • a communication method includes: a first terminal device detects a transmission parameter for a second terminal device to send sideline information on a first resource, the transmission parameter includes a transmission mode or a path loss type, The transmission modes include broadcast, unicast, and multicast, and the path loss types include side link path loss and downlink path loss; the first terminal device determines according to the energy detection threshold corresponding to the transmission parameter Whether the first resource is a candidate resource, and the candidate resource is a candidate resource used for the first terminal device to send sideline information.
  • the method may be executed by a first device, and the first device may be a communication device or a communication device capable of supporting the communication device to implement the functions required by the method, such as a chip system or a communication module in the communication device.
  • the communication device may be a terminal device.
  • the method includes: a network device sends first configuration information to a terminal device, where the first configuration information is used to indicate at least one energy detection threshold, and the at least one energy detection threshold is At least one transmission mode for sending sideline information corresponds to or corresponds to at least one path loss type for sending sideline information, the transmission parameter includes a transmission mode or a path loss type, and the transmission mode includes broadcast, unicast, or For multicast, the path loss types include side link path loss and downlink path loss.
  • the method can be executed by a second device, and the second device can be a communication device or a communication device capable of supporting the communication device to implement the functions required by the method, such as a chip system or a communication module in the communication device.
  • the communication device may be a network device.
  • the network device may generate the first configuration information, that is, configure the transmission parameters, such as the energy detection threshold corresponding to the transmission mode or the path loss type.
  • the first terminal device may determine, according to the first configuration information, whether the first resource used for the second terminal device to send the sideline information is available.
  • there are at least two transmission parameters and the network device can configure different energy detection thresholds for different transmission parameters, for example, the path loss of a communication link caused by broadcasting is compared with the path loss of a path link caused by unicast. If larger, the energy detection threshold corresponding to broadcast can be lower than the energy detection threshold corresponding to unicast.
  • the first terminal device can determine whether the first resource is a candidate resource, so as to reduce the amount of Potential interference and resource conflicts when a terminal device sends data.
  • the first terminal device determining whether the first resource is a candidate resource according to an energy detection threshold corresponding to the transmission parameter includes:
  • the energy detection on the first resource is greater than or equal to the threshold corresponding to the transmission parameter, it is determined that the first resource is not a candidate resource; or,
  • the energy detection on the first resource is less than the threshold corresponding to the transmission parameter, it is determined that the first resource is a candidate resource.
  • This solution provides a specific way for the first terminal device to determine whether the first resource is a candidate resource.
  • the first terminal device detects that the transmission parameter of the side line information sent by the second terminal device on the first resource includes any one of the following:
  • the first terminal device detects first control information from the second terminal device in a listening window, and the first control information is used to indicate the transmission mode.
  • This solution uses first control information, such as sidelink control information (SCI) to indicate the transmission mode of the second terminal device, which is straightforward.
  • SCI sidelink control information
  • the above-mentioned first control information is a first-level SCI
  • the first control information includes indication information in a second-level SCI format
  • the second-level SCI format corresponds to the transmission mode.
  • This solution uses a two-level SCI to indicate the transmission mode of the second terminal device, where the second-level SCI format corresponds to the transmission mode, that is, the transmission mode is indicated in an implicit manner, which improves the practicability of the solution. Combining the above exemplary solutions, Further improve the flexibility of the program.
  • the first terminal device also receives the first configuration information from the network device.
  • the first configuration information is different for different transmission parameters. Several first configurations are listed below. How the information is implemented.
  • the transmission parameter is a transmission manner
  • the first configuration information may be any of the following:
  • the first configuration information is used to indicate at least one energy detection threshold, and the at least one energy detection threshold includes a first energy detection threshold, a second energy detection threshold, and a third energy detection threshold.
  • the first energy detection threshold corresponds to broadcasting
  • the second energy detection threshold corresponds to unicast
  • the third energy detection threshold corresponds to multicast.
  • the design scheme independently configures the corresponding energy detection threshold for each transmission mode, which is simple and clear.
  • the first configuration information is used to indicate at least one energy detection threshold, the at least one energy detection threshold includes a first energy detection threshold and a second energy detection threshold, the first energy detection threshold corresponds to unicast, so The second energy detection threshold corresponds to broadcast and multicast.
  • This design scheme configures an energy detection threshold for unicast, and shares an energy detection threshold for broadcast and multicast, which further reduces the signaling overhead for the network device to send the first configuration information.
  • the first configuration information is used to indicate at least one energy detection threshold, the at least one energy detection threshold includes a first energy detection threshold and a second energy detection threshold, the first energy detection threshold corresponds to broadcast, the The second energy detection threshold corresponds to unicast and multicast.
  • This design scheme configures an energy detection threshold for broadcasting, and shares an energy detection threshold for unicast and multicast, which further reduces the signaling overhead for the network device to send the first configuration information.
  • the first configuration information is used to indicate at least one energy detection threshold and at least one threshold offset, and the at least one energy detection threshold includes a first energy detection threshold, wherein:
  • the first energy detection threshold corresponds to unicast
  • the at least one threshold offset includes a first threshold offset
  • the first threshold offset corresponds to broadcast and multicast
  • the first energy detection threshold corresponds to unicast
  • the at least one threshold offset includes a first threshold offset and a second threshold offset
  • the first threshold offset corresponds to broadcast
  • the second threshold offset corresponds to a group Broadcast
  • the first energy detection threshold corresponds to broadcasting
  • the at least one threshold offset includes a first threshold offset
  • the first threshold offset corresponds to unicast and multicast
  • the first energy detection threshold corresponds to broadcasting
  • the at least one threshold offset includes a first threshold offset and a second threshold offset
  • the first threshold offset corresponds to unicast
  • the second threshold offset corresponds to a group broadcast.
  • This design scheme uses a certain transmission mode, for example, the first energy detection threshold corresponding to the first transmission mode as a reference, and uses the threshold offset to indicate the energy detection threshold of other transmission modes, which can further reduce the signaling of the first configuration information sent by the network device Overhead.
  • the threshold offset can be one, that is, in addition to the first transmission mode, the other transmission modes correspond to the threshold offset; or the threshold offset can also be multiple, and different threshold offsets have different effects on the other transmission modes, which enhances the solution. applicability. Further, the threshold offset may be predefined. While reducing the signaling overhead for the network device to send the first configuration information, the signaling configuration method can be simplified, and the process of selecting resources for the terminal device can be simplified.
  • the transmission parameter is a path loss type
  • the first configuration information may be any of the following:
  • the first configuration information is used to indicate at least one energy detection threshold, the at least one energy detection threshold includes a first energy detection threshold and a second energy detection threshold, and the first energy detection threshold corresponds to a side link Path loss, the second energy detection threshold corresponds to downlink path loss.
  • the path loss caused by broadcasting is large, so it can be configured as side link path loss by broadcasting.
  • unicast and multicast can be configured as downlink path loss, that is, transmission is indicated by the type of path loss. the way.
  • This design scheme configures different energy detection thresholds for different path losses, that is, independently configures energy detection thresholds for each path loss.
  • different path loss types When different path loss types are used, it can more accurately determine the resource occupancy and avoid different terminal equipment selections. Resource conflicts and interference problems caused by the same resources.
  • the first configuration information is used to indicate at least one energy detection threshold, the at least one energy detection threshold includes a first energy detection threshold, and the first configuration information is also used to indicate a threshold offset, wherein the The first energy detection threshold is the energy detection threshold corresponding to the downlink path loss, and the threshold offset is the difference between the first energy detection threshold and the energy detection threshold of the side link path loss; or, so The first energy detection threshold is an energy detection threshold corresponding to a side link path loss, and the threshold offset is a difference between the first energy detection threshold and an energy detection threshold of the downlink path loss.
  • the design scheme takes a certain path loss, such as the first energy detection threshold corresponding to the downlink path loss, as a reference, and uses threshold offset to indicate the energy detection threshold of the side link path loss, further reducing the first configuration information sent by the network device Signaling overhead.
  • the threshold offset can be pre-defined to simplify the signaling configuration mode as much as possible and simplify the process of selecting resources for the terminal device.
  • the first configuration information may be used to indicate a first energy detection threshold
  • the first terminal device is based on at least one maximum transmission power of the second terminal device and the first configuration
  • the information determines the energy detection threshold corresponding to the transmission mode.
  • the first terminal device further receives second configuration information from the network device, the second configuration information indicating the at least one maximum transmission power.
  • the maximum transmission power corresponding to different transmission parameters may be different, that is, the corresponding second configuration information is also different, and several implementation manners of the second configuration information are listed below.
  • the at least one maximum transmission power includes a first maximum transmission power, a second maximum transmission power, and a third maximum transmission power, the first maximum transmission power corresponds to broadcasting, and the second maximum transmission power corresponds to unicast, The third maximum transmit power corresponds to multicast.
  • This design scheme can configure different maximum transmission powers for different transmission parameters, and the maximum transmission power indicates the energy detection threshold corresponding to the transmission parameters, which enhances the applicability of the scheme.
  • Different transmission parameters are configured with different maximum transmission powers, for example, a smaller maximum transmission power is configured for unicast, which can avoid power waste caused by excessive power.
  • the at least one maximum transmission power includes a first maximum transmission power and a second maximum transmission power, wherein the first maximum transmission power corresponds to broadcasting, and the second maximum transmission power corresponds to unicast or multicast; or , The first maximum transmission power corresponds to unicast, and the second maximum transmission power corresponds to broadcast or multicast.
  • one transmission method such as broadcast corresponds to one maximum transmission power
  • the other two transmission methods such as unicast and multicast multiplex a maximum transmission power.
  • Network equipment only needs to configure two maximum transmission powers, which can reduce transmission second Configure the signaling overhead of the information while simplifying the signaling configuration mode.
  • the second configuration information is used to indicate the first maximum transmit power and at least one transmit power offset, where:
  • Design 9 The first maximum transmit power corresponds to unicast, the at least one transmit power offset includes a first transmit power offset, and the first transmit power offset corresponds to broadcast or multicast; or, the first The maximum transmission power corresponds to broadcasting, the at least one transmission power offset includes a first transmission power offset, and the first transmission power offset corresponds to unicast or multicast.
  • This design scheme uses the first energy detection threshold corresponding to a certain transmission method such as unicast as a reference, and uses a maximum transmission power threshold offset to indicate the energy detection threshold of other transmission methods, which can also further reduce network equipment sending second configuration information Signaling overhead.
  • the first maximum transmit power corresponds to unicast
  • the at least one transmit power offset includes a first transmit power offset and a second transmit power offset
  • the first transmit power offset corresponds to broadcast
  • the second transmission power offset corresponds to multicast
  • the first maximum transmission power corresponds to broadcasting
  • the at least one transmission power offset includes a first transmission power offset and a second transmission power offset
  • the first transmission The power offset corresponds to unicast
  • the second transmit power offset corresponds to multicast.
  • the design scheme also uses the first energy detection threshold corresponding to a certain transmission mode, such as unicast, as a reference.
  • the maximum transmission power threshold offset can be multiple, and different maximum transmission power threshold offsets enhance different other transmission modes. The applicability of the program. Since the indication information for the energy detection threshold is not added, power waste can be avoided at the same time.
  • the first terminal device determines the second energy detection threshold corresponding to the transmission mode according to the at least one maximum transmit power of the second terminal device and the first configuration information, including: The first terminal device determines a first maximum transmission power corresponding to the transmission mode from at least one maximum transmission power of the second terminal device according to the second configuration information; the first terminal device determines a transmission power threshold Offset, the transmit power threshold offset is the difference between the first maximum transmit power and the maximum transmit power corresponding to the first energy detection threshold; the first terminal device is based on the transmit power threshold offset and The first energy detection threshold determines the second energy detection threshold.
  • the first terminal device can determine the transmit power threshold offset corresponding to the second terminal device according to the configured multiple maximum transmit powers, and the transmit power threshold offset can be understood
  • the energy detection threshold of the second terminal device can be determined according to the transmit power threshold offset and the first energy detection threshold. It can be seen that this solution provides another way to indirectly indicate the energy detection threshold, which enhances the applicability of the solution.
  • the method further includes:
  • the network device configures the path loss type according to the transmission mode.
  • the at least one energy detection threshold includes a first energy detection threshold, a second energy detection threshold, and a third energy detection threshold.
  • the first energy detection threshold corresponds to broadcasting, and the The second energy detection threshold corresponds to unicast, and the third energy detection threshold corresponds to multicast; or,
  • the at least one energy detection threshold includes a first energy detection threshold and a second energy detection threshold, the first energy detection threshold corresponds to unicast, and the second energy detection threshold corresponds to broadcast and multicast; or,
  • the at least one energy detection threshold includes a first energy detection threshold and a second energy detection threshold, the first energy detection threshold corresponds to broadcasting, and the second energy detection threshold corresponds to unicast and multicast.
  • the at least one energy detection threshold includes a first energy detection threshold
  • the first configuration information is further used to indicate at least one threshold offset
  • the first energy detection threshold corresponds to unicast
  • the at least one threshold offset includes a first threshold offset
  • the first threshold offset corresponds to broadcast and multicast
  • the at least one threshold offset includes the first A threshold offset and a second threshold offset, where the first threshold offset corresponds to broadcast, and the second threshold offset corresponds to multicast; or,
  • the first energy detection threshold corresponds to broadcast, the at least one threshold offset includes a first threshold offset, and the first threshold offset corresponds to unicast and multicast; or, the at least one threshold offset includes the first The threshold offset and the second threshold offset, the first threshold offset corresponds to unicast, and the second threshold offset corresponds to multicast.
  • the at least one energy detection threshold includes a first energy detection threshold and a second energy detection threshold, the first energy detection threshold corresponds to a side link path loss, and the first energy detection threshold 2.
  • the energy detection threshold corresponds to the downlink path loss; or,
  • the at least one energy detection threshold includes a first energy detection threshold, the configuration information is also used to indicate a threshold offset, the first energy detection threshold is an energy detection threshold corresponding to the downlink path loss, and the threshold offset Is the difference between the first energy detection threshold and the energy detection threshold of the side link path loss; or,
  • the at least one energy detection threshold includes a first energy detection threshold, the configuration information is also used to indicate a threshold offset, and the first energy detection threshold is an energy detection threshold corresponding to a side-link path loss, and the threshold is offset.
  • the shift is the absolute value of the difference between the first energy detection threshold and the energy detection threshold of the downlink path loss.
  • the method further includes:
  • the network device generates second configuration information, where the second configuration information is used to indicate at least one maximum transmission power; the network device sends the second configuration information to the terminal device.
  • the at least one maximum transmission power includes a first maximum transmission power, a second maximum transmission power, and a third maximum transmission power.
  • the first maximum transmission power corresponds to broadcasting, and the The second maximum transmission power corresponds to unicast, and the third maximum transmission power corresponds to multicast; or,
  • the at least one maximum transmission power includes a first maximum transmission power and a second maximum transmission power, the first maximum transmission power corresponds to broadcasting, and the second maximum transmission power corresponds to unicast or multicast; or,
  • the at least one maximum transmission power includes a first maximum transmission power and a second maximum transmission power, the first maximum transmission power corresponds to unicast, and the second maximum transmission power corresponds to broadcast or multicast.
  • the at least one maximum transmit power includes a first maximum transmit power
  • the second configuration information is further used to indicate at least one transmit power offset, where:
  • the first maximum transmission power corresponds to unicast
  • the at least one transmission power offset includes a first transmission power offset
  • the first transmission power offset corresponds to broadcast or multicast
  • the first maximum transmit power corresponds to unicast
  • the at least one transmit power offset includes a first transmit power offset and a second transmit power offset
  • the first transmit power offset corresponds to broadcast
  • the power offset corresponds to multicast
  • the first maximum transmission power corresponds to broadcasting
  • the at least one transmission power offset includes a first transmission power offset
  • the first transmission power offset corresponds to unicast or multicast
  • the first maximum transmission power corresponds to broadcasting
  • the at least one transmission power offset includes a first transmission power offset and a second transmission power offset
  • the first transmission power offset corresponds to unicast
  • the second transmission The power offset corresponds to multicast.
  • the at least one energy detection threshold includes a first energy detection threshold.
  • a communication method includes: a terminal device receives first indication information from a network device, where the first indication information is used to indicate the first of the multiple determination modes of the modulation and coding scheme MCS. Determination method; the terminal device determines the MCS to be adopted according to the first determination method.
  • the method may be executed by a first device, and the first device may be a communication device or a communication device capable of supporting the communication device to implement the functions required by the method, such as a chip system or a communication module in the communication device.
  • the communication device may be a terminal device.
  • a communication method includes: a network device sends first indication information to a terminal device, where the first indication information is used to indicate the first determination among the multiple determination methods of the modulation and coding method MCS the way.
  • the method may be executed by a first device, and the first device may be a communication device or a communication device capable of supporting the communication device to implement the functions required by the method, such as a chip system or a communication module in the communication device.
  • the communication device may be a network device.
  • the first indication information can clearly instruct the terminal device to select the MCS determination mode.
  • the first indication information is carried in the MCS field of the downlink control information DCI, and the value of the reserved bit of the MCS field is used to indicate the first determination Way, where
  • the first determination method is that the terminal device selects the MCS within the index range of all MSCs, or the first determination method is that the terminal device selects the MCS within the first index range of the MSC, and the first index The range is a subset of the index range of all MSCs.
  • This solution adopts the value of reserved bits in the MCS field of DCI without modifying the value range of MCS in the current DCI, that is, on the premise of being compatible with the current DCI MCS field, and can support the independent selection of newly added terminal devices. Two ways to determine MCS.
  • the first indication information is further carried in radio resource control RRC signaling, and the RRC signaling is used to configure at least one index range of the MCS, and the first The index range is a subset of the at least one index range.
  • This solution uses RRC signaling to configure and select the index range of the MCS for the terminal device, which is more flexible.
  • the reserved bits of the MCS field are also used to indicate the transmission type of the transport block, and the transmission type includes initial transmission, retransmission, or configured through high-level signaling. Transmission, where
  • the reserved bit of the MCS field is used to indicate that the transmission type is initial transmission, and the first value of the reserved bit of the MCS field is used to instruct the terminal device to select the MCS within the first index range of the MCS,
  • the second value of the reserved bit of the MCS field is used to instruct the terminal device to select the MCS within the second index range of the MCS, where the first index range is a subset of the at least one index range, and the The second index range is a subset of the at least one index range; or,
  • the reserved bits of the MCS field are used to indicate that the transmission type is retransmission or transmission configured through higher layer signaling, and the reserved bits of the MCS field are used to indicate that the MCS is the previous corresponding to the same transmission block. MCS.
  • the reserved bits of the MCS domain can also be multiplexed to indicate the transmission type of the transport block, such as initial transmission, retransmission, or transmission configured through high-level signaling.
  • the reserved bit indication of the MCS domain The content of is different, and the scope of use is wider.
  • a communication device has the function of implementing the behavior in the method embodiment of the first aspect.
  • the function can be realized by hardware, or by hardware executing corresponding software.
  • the hardware or software includes one or more modules corresponding to the above-mentioned functions.
  • the communication device includes a processing module and a transceiver module, wherein the processing module is used to detect the transmission parameters received by the transceiver module for the second terminal device to send sideline information on the first resource,
  • the transmission parameter includes a transmission mode or a path loss type, the transmission mode includes broadcast, unicast, and multicast, and the path loss type includes a side link path loss and a downlink path loss; and according to the transmission parameter
  • the corresponding energy detection threshold determines whether the first resource is a candidate resource, and the candidate resource is a candidate resource used for the first terminal device to send sideline information.
  • a communication device is provided.
  • the communication device has the function of realizing the behavior in the method embodiment of the second aspect described above.
  • the function can be realized by hardware, or by hardware executing corresponding software.
  • the hardware or software includes one or more modules corresponding to the above-mentioned functions.
  • the communication device includes a processing module and a transceiver module, where:
  • the transceiver module is configured to send first configuration information determined by the processing module to a terminal device, where the first configuration information is used to indicate at least one energy detection threshold, and the at least one energy detection threshold is used for sending sideline information
  • the transmission parameter includes a transmission mode or a path loss type
  • the transmission mode includes broadcast, unicast, and multicast, so
  • the path loss types include side link path loss and downlink path loss.
  • a communication device is provided.
  • the communication device has the function of implementing the behavior in the method embodiment of the third aspect.
  • the function can be realized by hardware, or by hardware executing corresponding software.
  • the hardware or software includes one or more modules corresponding to the above-mentioned functions.
  • the communication device includes a transceiving module and a processing module, wherein the transceiving module is used to receive first indication information from a network device, and the first indication information is used to indicate the modulation and coding method MCS.
  • the first determination method among the three determination methods; the processing module is configured to determine the MCS to be adopted according to the first determination method.
  • the method may be executed by a first device, and the first device may be a communication device or a communication device capable of supporting the communication device to implement the functions required by the method, such as a chip system or a communication module in the communication device.
  • the communication device may be a terminal device.
  • a communication device is provided.
  • the communication device has the function of realizing the behavior in the method embodiment of the fourth aspect.
  • the function can be realized by hardware, or by hardware executing corresponding software.
  • the hardware or software includes one or more modules corresponding to the above-mentioned functions.
  • the communication device includes a processing module and a transceiving module, wherein the transceiving module is used to send the first indication information determined by the processing module to the terminal device, and the first indication information is used to indicate modulation The first determination method among the multiple determination methods of the encoding method MCS.
  • These modules can perform the corresponding functions in the method example of the fourth aspect. For details, please refer to the detailed description in the method example, which will not be repeated here.
  • a communication device is provided.
  • the communication device may be the communication device in the fifth aspect or the sixth aspect or the seventh aspect or the eighth aspect in the foregoing method embodiments, or may be the communication device provided in the fifth aspect or The chip in the communication device in the sixth aspect or the seventh aspect or the eighth aspect.
  • the communication device includes a communication interface, a processor, and optionally, a memory. Wherein, the memory is used to store computer programs or instructions or data, and the processor is coupled with the memory and a communication interface. When the processor reads the computer programs or instructions or data, the communication device is caused to execute the network device in the above method embodiment. Or the method executed by the terminal device.
  • the communication interface may be a transceiver in the communication device, for example, implemented by the antenna, feeder, and codec in the communication device, or if the communication device is a chip set in a network device, the communication interface It can be the input/output interface of the chip, such as input/output pins.
  • the transceiver is used for the communication device to communicate with other devices. Exemplarily, when the communication device is a terminal device, the other device is a network device; or, when the communication device is a network device, the other device is a terminal device.
  • an embodiment of the present application provides a chip system, which includes a processor and may also include a memory for implementing the communication device in the fifth or sixth aspect or the seventh or eighth aspect. Methods.
  • the chip system further includes a memory for storing program instructions and/or data.
  • the chip system can be composed of chips, or it can include chips and other discrete devices.
  • an embodiment of the present application provides a communication system.
  • the system includes the communication device described in the fifth aspect and the communication device described in the sixth aspect, or includes the communication device described in the seventh aspect and the communication device described in the seventh aspect.
  • a computer program product includes: computer program code, which when the computer program code is running, causes the methods executed by the network device in the above aspects to be executed, or causes The methods executed by the terminal device in the above aspects are executed; or the methods executed by the terminal device in the above aspects are executed.
  • this application provides a computer-readable storage medium that stores a computer program, and when the computer program is run, the method executed by the network device in the above aspects is implemented; or The method performed by the terminal device in each of the above aspects.
  • the network device can configure different energy detection thresholds for different transmission parameters. Even if there are at least two transmission parameters, since different transmission parameters correspond to different energy detection thresholds, relatively different transmission parameters correspond to the same
  • the energy detection threshold can prevent the first terminal device from determining the first resource actually used by the second terminal device as a candidate resource due to a large difference in the transmission power corresponding to different transmission parameters, that is, resource conflicts.
  • FIG. 1 is a schematic diagram of V2X provided by an embodiment of the application.
  • FIG. 2 is a schematic diagram of a possible application scenario applied by an embodiment of this application
  • Fig. 3 is a schematic diagram of a listening resource provided by an embodiment of the application.
  • FIG. 4 is a schematic diagram of a network architecture applied in an embodiment of this application.
  • FIG. 5 is a schematic flowchart of a communication method provided by an embodiment of this application.
  • FIG. 6 is a schematic flowchart of a communication method provided by an embodiment of this application.
  • FIG. 7 is a schematic diagram of a communication device provided by an embodiment of this application.
  • FIG. 8 is another schematic diagram of a communication device provided by an embodiment of this application.
  • FIG. 9 is still another schematic diagram of a communication device provided by an embodiment of this application.
  • FIG. 10 is a schematic diagram of a communication device provided by an embodiment of this application.
  • FIG. 11 is another schematic diagram of a communication device provided by an embodiment of this application.
  • FIG. 12 is still another schematic diagram of a communication device provided by an embodiment of this application.
  • Terminal devices also called terminal devices, include devices that provide users with voice and/or data connectivity, such as handheld devices with wireless connection functions, or processing devices connected to wireless modems.
  • the terminal device can communicate with the core network via a radio access network (RAN), and exchange voice and/or data with the RAN.
  • RAN radio access network
  • the terminal equipment may include user equipment (UE), wireless terminal equipment, mobile terminal equipment, device-to-device communication (device-to-device, D2D) terminal equipment, V2X terminal equipment, machine-to-machine/machine-type communication ( machine-to-machine/machine-type communications, M2M/MTC) terminal equipment, Internet of things (IoT) terminal equipment, subscriber unit (subscriber unit), subscriber station (subscriber station), mobile station (mobile station) , Remote station (remote station), access point (access point, AP), remote terminal (remote terminal), access terminal (access terminal), user terminal (user terminal), user agent (user agent), aircraft (such as UAV, hot air balloon, civil aviation passenger plane, etc.) or user device, etc.
  • IoT Internet of things
  • subscriber unit subscriber unit
  • subscriber station subscriber station
  • mobile station mobile station
  • Remote station remote station
  • access point access point
  • AP remote terminal
  • remote terminal remote terminal
  • access terminal access terminal
  • user terminal user terminal
  • it may include mobile phones (or “cellular” phones), computers with mobile terminal equipment, portable, pocket-sized, hand-held, mobile devices with built-in computers, and so on.
  • PCS personal communication service
  • PCS cordless phones
  • SIP session initiation protocol
  • WLL wireless local loop
  • PDA personal digital assistants
  • restricted devices such as devices with low power consumption, or devices with limited storage capabilities, or devices with limited computing capabilities. Examples include barcodes, radio frequency identification (RFID), sensors, global positioning system (GPS), laser scanners and other information sensing equipment.
  • RFID radio frequency identification
  • GPS global positioning system
  • laser scanners and other information sensing equipment.
  • the terminal device may also be a wearable device.
  • Wearable devices can also be called wearable smart devices or smart wearable devices, etc. It is a general term for using wearable technology to intelligently design daily wear and develop wearable devices, such as glasses, gloves, watches, clothing and shoes Wait.
  • a wearable device is a portable device that is directly worn on the body or integrated into the user's clothes or accessories. Wearable devices are not only a kind of hardware device, but also realize powerful functions through software support, data interaction, and cloud interaction.
  • wearable smart devices include full-featured, large-sized, complete or partial functions that can be achieved without relying on smart phones, such as smart watches or smart glasses, and only focus on a certain type of application function, and need to cooperate with other devices such as smart phones.
  • Use such as all kinds of smart bracelets, smart helmets, smart jewelry, etc. for physical sign monitoring.
  • the various terminal devices described above if they are located on the vehicle (for example, placed in the vehicle or installed in the vehicle), can be regarded as vehicle-mounted terminal equipment, for example, the vehicle-mounted terminal equipment is also called on-board unit (OBU). ).
  • the terminal device of the present application may also be a vehicle-mounted module, vehicle-mounted module, vehicle-mounted component, vehicle-mounted chip, or vehicle-mounted unit built into a vehicle as one or more components or units.
  • the vehicle passes through the built-in vehicle-mounted module, vehicle-mounted module, On-board components, on-board chips, or on-board units can implement the method of the present application.
  • Network equipment including, for example, access network (AN) equipment, such as a base station (e.g., access point), which may refer to equipment that communicates with wireless terminal equipment through one or more cells on the air interface in the access network
  • AN access network
  • a base station e.g., access point
  • IP Internet Protocol
  • the base station can be used to convert received air frames and Internet Protocol (IP) packets into each other, and act as a router between the terminal device and the rest of the access network, where the rest of the access network may include an IP network.
  • IP Internet Protocol
  • the RSU can be a fixed infrastructure entity that supports V2X applications, and can exchange messages with other entities that support V2X applications.
  • the network equipment can also coordinate the attribute management of the air interface.
  • the network equipment may include a long term evolution (LTE) system or an evolved base station (NodeB or eNB or e-NodeB, evolutional NodeB) in a long term evolution-advanced (LTE-A) system, Or it may include the next generation node B (gNB) in the 5G NR system, or it may include the centralized unit (CU) in the cloud radio access network (Cloud RAN) system. And distributed unit (DU), the embodiment of the present application is not limited.
  • LTE long term evolution
  • NodeB or eNB or e-NodeB, evolutional NodeB evolutional NodeB
  • LTE-A long term evolution-advanced
  • gNB next generation node B
  • CU centralized unit
  • Cloud RAN cloud radio access network
  • DU distributed unit
  • At least one of a, b, or c can mean: a, b, c, a-b, a-c, b-c or a-b-c, where a, b, and c can be single or multiple.
  • first and second are used to distinguish multiple objects, and are not used to limit the order, timing, priority, or order of multiple objects. Importance.
  • first configuration information and the second configuration information are only for distinguishing different configuration information, but do not indicate the difference in priority, sending order, or importance of the two types of messages.
  • V2X was successfully established as a major application of device-to-device (D2D) technology.
  • D2D device-to-device
  • V2X will optimize the specific application requirements of V2X on the basis of the existing D2D technology. It is necessary to further reduce the access delay of V2X devices and solve the problem of resource conflicts.
  • V2X is a schematic diagram of a V2X network architecture.
  • V2X specifically includes vehicle-to-vehicle (V2V), vehicle-to-infrastructure (V2I), vehicle-to-pedestrian (V2P) direct communication, and There are several application requirements such as vehicle-to-network (V2N) communication and interaction.
  • V2V refers to the communication between vehicles
  • V2P refers to the communication between vehicles and people (including pedestrians, cyclists, drivers, or passengers)
  • V2I refers to the communication between vehicles and network devices.
  • network equipment such as RSU, there is also a V2N that can be included in V2I.
  • V2N refers to the communication between the vehicle and the base station/network.
  • RSU includes two types: terminal type RSU, because it is located on the roadside, this terminal type RSU is in a non-mobile state, and there is no need to consider mobility; base station type RSU can provide timing synchronization for vehicles communicating with it And resource scheduling.
  • FIG. 2 is a schematic diagram of a possible application scenario applied by the embodiment of this application.
  • Figure 2 includes three terminal devices.
  • the terminal devices in FIG. 2 are user equipment (UE) 1, UE2, and UE3, respectively.
  • UE1 and UE2 communicate through a V2X link
  • UE3 and UE1 communicate through a V2X link.
  • UE1, UE2, or UE3 need to confirm available resources before sending data, so as to avoid resource conflicts selected by UE1 and UE2, which may cause interference with each other's data transmission or cause data transmission failure.
  • Mode1 means that network equipment, such as a base station or a relay station, allocates resources to terminal devices through scheduling.
  • Mode2 means that the network equipment allocates a resource pool in advance, and the terminal device autonomously selects available resources in the resource pool for data transmission. When the terminal device selects available resources, it will sense the resources of the resource pool and obtain the sensing result. Sensing refers to the occupancy of different time-frequency resources in a resource pool over a period of time.
  • Sensing includes energy detection and SCI decoding.
  • Energy detection refers to energy detection for a certain resource unit in the resource pool, such as RSRP or reference signal received quality (RSRQ) detection.
  • the terminal device selects the currently unoccupied resources in the resource pool for data transmission according to the measurement result of the energy detection. If the measurement result of energy detection performed on a certain resource unit in the resource pool exceeds a certain threshold, it can be considered that the resource unit has been occupied. On the contrary, if the measurement result of energy detection on a certain resource unit in the resource pool is lower than a certain threshold, it can be considered that the resource unit is not occupied, that is, it can be used as a candidate resource.
  • the process of SCI decoding is that a certain UE receives the SCI sent by other UEs in the resource pool and decodes the received SCI. Since the information of the resources occupied by the data to be sent by a UE in the resource pool can be indicated by the SCI, that is, the SCI contains the resource information corresponding to the sent data, so a UE can decode the SCI of other UEs. Know the resources occupied by other UEs in the resource pool. If the SCI decoding is successful and indicates that a certain resource is occupied, the resource is considered to be occupied. If the SCI decoding is unsuccessful, it is considered that other UEs do not occupy resources in the resource pool.
  • Both energy detection and SCI decoding operate in a fixed-size time window in the resource pool.
  • the UE determines in the sensing window that the available resources are, for example, resources corresponding to the selection window of n+T1 to n+T2, it selects appropriate resources for the SCI and data among the available resources to use for the transmission of the SCI and data.
  • the terminal device can be at time n after the sensing window ( Figure 3 is indicated by the dotted line between the listening window and the selection window, and the arrow indicates the selection), in the selection window (n+T1, n+T2), it is SCI Select the appropriate resource (resource corresponding to n+c) and data to select the appropriate resource (resource corresponding to n+d).
  • the abscissa of FIG. 3 represents the time domain, and the ordinate represents the frequency domain.
  • the UE uses sensing SCI decoding to eliminate all occupied resources in the resource pool, and the remaining unoccupied resources are available resources. Then the UE performs energy detection on all occupied resources. If the measurement result of a certain resource for energy detection is less than a certain threshold, then the resource is an available resource; on the contrary, if the measurement result of the energy detection for the resource is greater than a certain threshold , Then the resource is unavailable.
  • the available resources obtained by the UE using SCI decoding and the available resources obtained by using energy detection are all available resources of the UE.
  • the all available resources can be understood as the UE to use later, and all can also be considered as a set of candidate resources, that is, a set of candidate resources.
  • V2X communication has only one transmission method, namely broadcasting, that is, the resource pool is only used for broadcasting services. Therefore, in LTE V2X technology, there is only one energy detection threshold for judging available resources for broadcasting services.
  • V2X communication can have three transmission methods: broadcast, groupcast, or unicast, and these three transmission methods can select resources in the same resource pool.
  • a possible scenario, V2X communication may have at least two transmission modes at the same time. For example, in Figure 2 there is a unicast or multicast service between UE1 and UE2, and a broadcast service between UE1 and UE3.
  • the power of UE1 to send data to UE2 is much less than the power of UE3 to broadcast data to UE1, then UE3 is determining a certain When the resource, for example, whether the resource used by the UE1 to send information can be used as a candidate resource, the measurement result of the RSRP measurement performed during the listening process is less than the set RSRP threshold.
  • UE3 believes that UE1 does not occupy a certain resource, so UE3 may choose the same resource as UE1 for broadcast transmission, but in fact UE1 may occupy this certain resource, which may cause potential interference to UE1 sending data UE1, that is, interference Transmission of UE1 data.
  • the embodiment of the present application can configure different energy detection thresholds for different transmission modes.
  • the path loss of the communication link of the broadcast service is larger than the path loss of the unicast service.
  • the transmit power is larger than the unicast service, so the energy detection threshold corresponding to broadcast can be higher than the energy detection threshold corresponding to unicast.
  • the resource actually used by the second terminal device is determined as a candidate resource, that is, resource conflict is caused, thereby reducing potential interference and resource conflict when multiple terminal devices send data.
  • the technical solutions provided in the embodiments of the present application can be used in wireless communication systems, such as NR systems, and further evolution systems based on LTE or NR, as well as future wireless communication systems or other similar communication systems.
  • FIG. 4 is a network architecture applied by the embodiments of the present application.
  • Figure 4 includes a network device and two terminal devices (UE1 and UE2). These two terminal devices may be vehicle-mounted terminals and/or any other suitable devices used for communication on a wireless communication system. The type of device is not limited. Both of these two terminal devices can be connected to the network equipment, and both can communicate with the network equipment.
  • the link between the terminal device 1 and the network device can be a cellular link, and the link between the terminal device 2 and the network device can also be a cellular link (shown as a solid line in Figure 4), the terminal device 1 and the terminal device
  • the link between 2 can be a side link (shown in dashed lines in Figure 4).
  • the architecture shown in FIG. 4 is of course the number of terminal devices in FIG. 4 is only an example, and it may be less or more.
  • the network device in Figure 4 may be a base station. Among them, network devices correspond to different devices in different systems.
  • 4G fourth generation
  • the network device can correspond to the eNB
  • the 5G system it can correspond to the gNB.
  • the embodiment of the present application provides a communication method. Please refer to FIG. 5, which is a flowchart of the method.
  • the application of this method to the application scenario shown in FIG. 2 or FIG. 4 is taken as an example.
  • the method can be executed by two communication devices, for example, the first communication device and the second communication device.
  • the first communication device may be a terminal device or a communication device capable of supporting the terminal device to realize the functions required by the method
  • the second communication device may be a network device or a communication device capable of supporting the network device to realize the functions required by the method (For example, chip system). The same is true for the second communication device.
  • the second communication device may be a terminal device or a communication device capable of supporting the functions required by the terminal device to implement the method, or the second communication device may be a network device or capable of supporting a network device to implement the method.
  • Communication device with required functions such as chip system.
  • the first communication device and the second communication device are both devices, or the first communication device is a terminal device, and the second communication device is capable of supporting a network.
  • the network device is, for example, a base station.
  • FIG. 5 is a flowchart of a communication method provided by an embodiment of this application.
  • the method is executed by a network device and a terminal device as an example, that is, it is assumed that the first communication device is the terminal device, and the first communication device is The second communication device is a network device as an example.
  • the first communication device may be any one of the three terminal devices shown in FIG. 2 or the two terminal devices shown in FIG. 4 , Such as on-board equipment, or RUS, etc.
  • the second communication device may be a network device, such as a base station serving a terminal device. It should be noted that the embodiment of the present application only takes execution through network equipment and terminal devices as an example, and is not limited to this scenario.
  • FIG. 5 is a flow chart of the method. The flow of the method is described as follows.
  • the network device sends first configuration information to a terminal device, and the terminal device receives the first configuration information, where the first configuration information is used to indicate at least one energy detection threshold.
  • the network device may generate the first configuration information and send the first configuration information to the terminal device.
  • the energy detection threshold can be understood as a basis for the first terminal device to determine whether the first resource used by the second terminal device to send sideline information is a candidate resource for the first terminal device to send information. For example, if the first terminal device determines that the energy detection result of the first resource is less than the energy detection threshold, the first resource may be a candidate resource.
  • the sideline information here can be data information, such as physical sidelink shared channel (PSSCH), or control information, such as physical sidelink control channel (physical sidelink control channel). channel, PSCCH), the embodiment of this application does not limit it.
  • the energy detection threshold here can be the RSRP threshold of PSSCH, or the RSRP threshold of PSCCH, or the RSRQ threshold of PSSCH, or the RSRQ threshold of PSCCH, or the received signal strength indicator (RSSI) threshold of PSSCH, or the threshold of PSCCH.
  • the RSSI threshold is not limited in this embodiment of the application.
  • the network equipment can configure energy detection thresholds for these three transmission modes. That is, the first configuration information may be used to indicate at least one energy detection threshold, and the at least one energy detection threshold corresponds to the transmission mode for the terminal device to send sideline information on the first resource. Since the path loss of the communication link of the broadcast service is larger than the path loss of the communication link of the unicast or multicast service, from this perspective, the path loss can be used to characterize the transmission mode. For example, the downlink path loss corresponds to broadcast, and the side link path loss corresponds to unicast or multicast; or, the downlink path loss corresponds to unicast, and the side link path loss corresponds to broadcast or multicast.
  • the at least one energy detection threshold corresponds to the type of path loss for the terminal device to send side-line information on the first resource
  • the type of path loss may include downlink path loss and/or side-link path. loss.
  • the transmission mode or path loss type can be understood as the transmission parameter of the side information sent by the terminal device in the first resource.
  • the network device may send the first configuration information to the terminal device through signaling configuration.
  • the signaling configuration includes: high-level radio resource control (RRC) signaling, medium access control (MAC) signaling, and system information block (System information block (SIB) information or physical layer signaling instructions, the RRC configuration information that appears in the following can be used for any of the above signaling configurations, and the RRC configuration information is used as an example for description in the following.
  • RRC radio resource control
  • MAC medium access control
  • SIB System information block
  • the RRC configuration information may be configured by the network device according to transmission parameters, and the first configuration information is implicitly associated or bound with the RRC configuration information.
  • the first configuration information can have different design methods.
  • the specific design method of the first configuration information is introduced below by taking the specific transmission parameter as the transmission method or the path loss type as an example.
  • the transmission parameter is a transmission mode
  • the first configuration information is used to indicate at least one energy detection threshold.
  • At least one energy detection threshold includes a first energy detection threshold, a second energy detection threshold, and a third energy detection threshold.
  • the first energy detection threshold corresponds to broadcasting
  • the second energy detection threshold corresponds to unicast
  • the third energy detection threshold corresponds to Multicast.
  • energy detection thresholds can be independently configured for different transmission modes.
  • the embodiment of the present application may predefine three energy detection thresholds, and the three energy detection thresholds are energy detection threshold 1, energy detection threshold 2, and energy detection threshold 3, respectively.
  • energy detection threshold 1 represents the energy detection threshold of broadcast
  • energy detection threshold 2 represents the energy detection threshold of unicast
  • energy detection threshold 3 represents the energy detection threshold of multicast.
  • the network equipment may send RRC signaling to the terminal device to indicate the specific energy detection threshold.
  • the number and number of the above-mentioned energy detection thresholds are only for illustration and are not limited.
  • energy detection threshold 1 may indicate unicast energy detection threshold
  • energy detection threshold 2 may indicate multicast energy detection threshold
  • energy detection threshold 3 may indicate broadcast energy detection threshold, and so on.
  • the system may predefine the correspondence between at least one energy detection threshold and the transmission mode.
  • the order of the predefined at least one energy detection threshold and the transmission mode is broadcast, unicast, and multicast; or, predefined The sequence corresponding to the at least one energy detection threshold and the transmission mode is unicast, broadcast, multicast, and so on.
  • the first terminal device can determine the energy detection threshold to be used when the first resource is a candidate resource according to the first configuration information and the transmission mode used by the second terminal device to send the sideline information.
  • the pre-defined energy detection threshold of the system may be agreed in the agreement, or may be implicitly associated.
  • the energy detection threshold is also related to the priority of the sidewalk information used by the first terminal device and the second terminal device.
  • the energy detection threshold is the threshold of broadcast, multicast and unicast under the corresponding priority.
  • At least one energy detection threshold includes a first energy detection threshold and a second energy detection threshold, the first energy detection threshold corresponds to unicast, and the second energy detection threshold corresponds to broadcast and multicast; or, the first energy detection threshold corresponds to broadcast , The second energy detection threshold corresponds to unicast and multicast.
  • the embodiment of the present application can set two energy detection thresholds, and these two energy detection thresholds correspond to three transmission modes, of which two of the three transmission modes are multiplexed.
  • Energy detection threshold For example, the two energy detection thresholds are the first energy detection threshold and the second energy detection threshold.
  • the first energy detection threshold corresponds to unicast
  • the second energy detection threshold corresponds to broadcast and multicast
  • the first energy detection threshold corresponds to broadcast
  • the second energy detection threshold corresponds to unicast and multicast.
  • the network device since two of the three transmission modes multiplex an energy detection threshold, the network device can configure fewer energy detection thresholds, thereby reducing the RRC signaling overhead for the network device to send the first configuration information.
  • design methods of (1) and (2) above are design methods of direct indication of the energy detection threshold.
  • the following provides a design way to indirectly indicate the energy detection threshold.
  • At least one energy detection threshold includes a first energy detection threshold, and the first configuration information is also used to indicate at least one threshold offset; or, at least one energy detection threshold includes a first energy detection threshold, and at least one threshold offset is predefined .
  • This solution uses a certain transmission method such as the first energy detection threshold corresponding to unicast as a reference, and uses the threshold offset to indicate other transmission methods, such as the energy detection threshold of broadcast or multicast, which can also reduce network equipment sending the first configuration. Information RRC signaling overhead.
  • at least one threshold offset is pre-defined, and the pre-defined manner may be agreed in the agreement or implicitly associated.
  • at least one threshold offset is related to the priority of the sideline information used for transmission, and the energy detection threshold may be predefined according to the priority of the sideline information used for transmission by the first terminal device and the second terminal device.
  • the first energy detection threshold corresponds to unicast
  • at least one threshold offset includes a first threshold offset and a second threshold offset
  • the first threshold offset corresponds to broadcast
  • the second threshold offset corresponds to multicast
  • the first energy detection threshold corresponds to broadcasting
  • at least one threshold offset includes a first threshold offset and a second threshold offset
  • the first threshold offset corresponds to unicast
  • the second threshold offset corresponds to multicast.
  • the first terminal device can determine the data corresponding to the broadcast according to the first energy detection threshold and the first threshold offset.
  • the second energy detection threshold may be the absolute value of the difference between the first energy detection threshold and the second energy detection threshold.
  • the second energy detection threshold may be the difference between the first energy detection threshold and the offset of the first threshold, that is, the first energy detection threshold minus the first threshold offset.
  • the second energy detection threshold may be the sum of the offset of the first energy detection threshold and the first threshold, that is, the first energy detection threshold plus the offset of the first threshold.
  • the second threshold offset may be the absolute value of the difference between the first energy detection threshold and the multicast energy detection threshold, for example, the third energy detection threshold.
  • the third energy detection threshold may be the difference between the first energy detection threshold and the second threshold offset, that is, the first energy detection threshold minus the second threshold offset; or, the third energy detection threshold may be the first energy detection threshold.
  • the sum of the offset of the threshold and the second threshold that is, the first energy detection threshold plus the offset of the second threshold.
  • the first configuration information indicates two threshold offsets, which respectively correspond to two transmission modes other than the first transmission mode, and can also reduce the RRC signaling overhead for the network device to send the first configuration information.
  • the first energy detection threshold corresponds to unicast
  • the at least one threshold offset includes the first threshold offset
  • the first threshold offset corresponds to broadcast and multicast; or, for example, the first energy detection threshold corresponds to broadcast
  • the at least one threshold offset includes a first threshold offset
  • the first threshold offset corresponds to unicast and multicast.
  • the first energy detection threshold corresponds to unicast
  • the transmission mode used by the second terminal device to send sideline information is broadcast
  • the first terminal device can determine and broadcast according to the first energy detection threshold and the first threshold offset.
  • the corresponding second energy detection threshold may be the absolute value of the difference between the first energy detection threshold and the second energy detection threshold.
  • the second energy detection threshold may be the difference between the first energy detection threshold and the offset of the first threshold, that is, the first energy detection threshold minus the first threshold offset; or, the second energy detection threshold may be the first energy detection threshold.
  • the sum of the threshold and the first threshold offset that is, the first energy detection threshold plus the first threshold offset.
  • the first configuration information indicates a threshold offset, that is, two transmission modes of the three transmission modes multiplex a threshold offset, which can further reduce the RRC signaling overhead for the network device to send the first configuration information.
  • the path loss used by UE3 to send information to UE1 is the downlink path loss, that is, the path loss between the terminal device and network equipment, and the path loss used by UE1 to send information to UE2 is the side link path loss. , That is, the path loss between the terminal device and the terminal device.
  • the network device can configure corresponding energy detection thresholds for different types of path loss.
  • the first configuration information used to indicate at least one energy detection threshold can have the following different designs:
  • the at least one energy detection threshold includes a first energy detection threshold and a second energy detection threshold, the first energy detection threshold corresponds to the side link path loss, and the second energy detection threshold corresponds to the downlink path loss.
  • energy detection thresholds can be independently configured for different types of path losses.
  • the embodiment of the present application may predefine two energy detection thresholds, and the two energy detection thresholds are energy detection threshold 1 and energy detection threshold 2, respectively.
  • the energy detection threshold 1 corresponds to the side link path loss
  • the energy detection threshold 2 corresponds to the downlink path loss.
  • the network equipment may send RRC signaling to the terminal device to indicate the specific energy detection threshold.
  • the RRC signaling may be transmitted through a link used for communication between a network device and a terminal device, or may be transmitted through a link used for sideline communication.
  • the number and number of the above-mentioned energy detection thresholds are only for illustration and are not limited.
  • the energy detection threshold 1 may correspond to the downlink path loss
  • the energy detection threshold 2 may correspond to the side link path loss.
  • the system may predefine the corresponding relationship between at least one energy detection threshold and the path loss type.
  • the order of the path loss type corresponding to the at least one energy detection is predefined in the order of side link path loss and downlink path loss.
  • the order of the path loss type corresponding to the predefined at least one energy detection is downlink path loss and side link path loss.
  • the first terminal device can determine the energy detection threshold to be used when the first resource is a candidate resource according to the first configuration information and the type of path loss used by the second terminal device to send sideline information.
  • design method of (4) above is a design method of direct indication of the energy detection threshold.
  • the following provides a design way to indirectly indicate the energy detection threshold.
  • At least one energy detection threshold includes a first energy detection threshold, the first configuration information is also used to indicate a threshold offset, the first energy detection threshold is a downlink path loss threshold, and the threshold offset is a first energy detection threshold The difference between the energy detection threshold and the energy detection threshold of the side-link path loss; or, at least one energy detection threshold includes the first energy detection threshold, the first configuration information is also used to indicate the threshold offset, and the first energy detection threshold is the side-link The threshold of the path loss, the threshold offset is the difference between the first energy detection threshold and the energy detection threshold of the downlink path loss.
  • the embodiment of the present application uses a certain path loss type, for example, the first energy detection threshold corresponding to the downlink path loss as a reference, and uses the threshold offset to indicate the side link path loss.
  • the energy detection threshold can also reduce the RRC signaling overhead for the network device to send the first configuration information.
  • the threshold offset in (5) may be the absolute value of the difference between the energy detection threshold of the side link path loss and the energy detection threshold of the downlink path loss.
  • the first energy detection threshold is the downlink path loss threshold
  • the side-link path loss energy detection threshold may be the difference between the first energy detection threshold and the threshold offset; or, the side-link path loss threshold
  • the energy detection threshold may be the sum of the first energy detection threshold and the threshold offset.
  • the terminal device may use the maximum transmit power for side link transmission.
  • the network device uses the transmit power control (TPC) field in the downlink control information (DCI) to instruct the terminal device to use the maximum transmit power for sidelink transmission.
  • the network device can instruct the terminal device to use the maximum transmit power for sidelink transmission by configuring the target power and path loss compensation parameters.
  • the embodiment of the present application may configure the maximum transmission power through the transmission mode, which can be understood as using the maximum transmission power to indicate the transmission mode.
  • the second configuration information used to indicate the at least one energy detection threshold can have the following different designs:
  • At least one maximum transmission power includes the first maximum transmission power, the second maximum transmission power and the third maximum transmission power.
  • the first maximum transmission power corresponds to broadcasting
  • the second maximum transmission power corresponds to unicast
  • the third maximum transmission power corresponds to Multicast.
  • the maximum transmit power can be independently configured for different transmission modes.
  • the embodiment of the present application may predefine three maximum transmission powers, and the three maximum transmission powers are maximum transmission power 1, maximum transmission power 2, and maximum transmission power 3, respectively.
  • the maximum transmission power 1 represents the maximum transmission power of broadcasting
  • the maximum transmission power 2 represents the maximum transmission power of unicast
  • the maximum transmission power 3 represents the maximum transmission power of multicast.
  • the network device may send RRC signaling to the terminal device to indicate the specific maximum transmit power. It should be noted that the above-mentioned number and number of the maximum transmission power are only for illustration and are not limited.
  • the maximum transmission power 1 can represent the maximum transmission power of unicast
  • the maximum transmission power 2 can represent the maximum transmission power of multicast
  • the maximum transmission power 3 can represent the maximum transmission power of broadcasting, and so on.
  • the maximum transmission power predefined by the system may be agreed in the agreement or implicitly associated.
  • the maximum transmission power is also related to the priority of the sideline information used by the first terminal device and the second terminal device.
  • the maximum transmission power is the threshold of broadcast, multicast and unicast under the corresponding priority.
  • the system may predefine the correspondence between at least one maximum transmission power and the transmission mode, for example, predefine the sequence of at least one maximum transmission power and the transmission mode as broadcast, unicast, and multicast; or, predefine at least A sequence corresponding to the maximum transmission power and the transmission mode is unicast, broadcast, and multicast; and so on.
  • the first terminal device can correspond to the maximum transmission power according to the first configuration information and the transmission mode used by the second terminal device to send the sideline information.
  • At least one maximum transmission power includes a first maximum transmission power and a second maximum transmission power, the first maximum transmission power corresponds to unicast, and the second maximum transmission power corresponds to broadcast and multicast; or, the first maximum transmission power corresponds to broadcast , The second maximum transmit power corresponds to unicast and multicast.
  • the embodiment of the present application can set two maximum transmission powers, and the two maximum transmission powers correspond to three transmission modes, and two of the three transmission modes are multiplexed with one transmission mode.
  • the two maximum transmission powers are the first maximum transmission power and the second maximum transmission power.
  • the first maximum transmission power corresponds to unicast
  • the second maximum transmission power corresponds to broadcast and multicast; or, the first maximum transmission power corresponds to broadcast
  • the second maximum transmission power corresponds to unicast and multicast.
  • the network device since two of the three transmission modes multiplex a maximum transmission power, the network device configures a smaller maximum transmission power, which can reduce the RRC signaling overhead for the network device to send the first configuration information.
  • design methods of (6) and (7) above are design methods that directly indicate the maximum transmit power.
  • the following provides a design method to indirectly indicate the maximum transmit power.
  • the at least one maximum transmission power includes the first maximum transmission power, and the first configuration information is also used to indicate at least one transmission power offset; or, the at least one maximum transmission power includes the first maximum transmission power, and the system predefines at least one transmission Power offset.
  • a certain transmission method such as the first maximum transmission power corresponding to unicast, is used as a reference, and the transmission power offset is used to indicate other transmission methods, such as the maximum transmission power of broadcast or multicast, which can also reduce the first transmission power of network equipment.
  • RRC signaling overhead for configuration information.
  • at least one transmit power offset is predefined, and the predefined manner may be agreed in the protocol or implicitly associated.
  • at least one transmission power offset is related to the priority of the sideline information used for transmission, and the transmission power threshold may be predefined according to the priority of the sideline information used for transmission by the first terminal device and the second terminal device.
  • the first maximum transmission power corresponds to unicast
  • at least one transmission power offset includes a first transmission power offset and a second transmission power offset
  • the first transmission power offset corresponds to broadcasting
  • the second transmission power offset corresponds to Multicast
  • the first maximum transmit power corresponds to broadcast
  • at least one transmit power offset includes the first transmit power offset and the second transmit power offset
  • the first transmit power offset corresponds to unicast
  • the second transmit power offset Corresponds to multicast.
  • the first terminal device can determine that it corresponds to broadcast based on the first maximum transmit power and the first transmit power offset The second maximum transmit power.
  • the first transmission power offset may be the absolute value of the difference between the first maximum transmission power and the second maximum transmission power.
  • the second maximum transmission power may be the difference between the first maximum transmission power and the first transmission power offset, that is, the first maximum transmission power minus the first transmission power offset.
  • the second maximum transmit power may be the sum of the first maximum transmit power and the offset of the first transmit power, that is, the first maximum transmit power plus the offset of the first transmit power.
  • the second transmission power offset may be the absolute value of the difference between the first maximum transmission power and the multicast maximum transmission power, for example, the third maximum transmission power.
  • the third maximum transmit power may be the difference between the first maximum transmit power and the second transmit power offset, that is, the first maximum transmit power minus the second transmit power offset; or, the third maximum transmit power may be the first The sum of the maximum transmit power and the second transmit power offset, that is, the first maximum transmit power plus the second transmit power offset.
  • the first configuration information indicates two transmission power offsets, respectively corresponding to two transmission modes other than the first transmission mode, which can also reduce the RRC signaling overhead for the network device to send the first configuration information.
  • the first maximum transmit power corresponds to unicast
  • the at least one transmit power offset includes the first transmit power offset
  • the first transmit power offset corresponds to broadcast and multicast
  • the at least one transmission power offset includes a first transmission power offset
  • the first transmission power offset corresponds to unicast and multicast.
  • the first maximum transmission power corresponds to unicast, and the transmission mode used by the second terminal device to send sideline information is broadcast, then the first terminal device can determine the same value based on the first maximum transmission power and the first transmission power offset. Broadcast the corresponding second maximum transmit power.
  • the first transmission power offset may be the absolute value of the difference between the first maximum transmission power and the second maximum transmission power.
  • the second maximum transmit power may be the difference between the first maximum transmit power and the offset of the first transmit power, that is, the first maximum transmit power minus the first transmit power offset; or, the second maximum transmit power may be the first The sum of the maximum transmit power and the first transmit power offset, that is, the first maximum transmit power plus the first transmit power offset.
  • the first configuration information indicates a transmission power offset, that is, two transmission modes of the three transmission modes multiplex a transmission power offset, which can further reduce the RRC signaling overhead for the network device to send the first configuration information .
  • the first configuration information may indicate the first energy detection
  • the threshold that is, the first configuration information includes an energy detection threshold.
  • the energy detection threshold corresponding to the transmission mode adopted by the second terminal device may be determined based on at least one maximum transmit power configured by the network device and the first energy detection threshold. Specific examples of this part are introduced below.
  • the network device sends second configuration information to the terminal device, and the terminal device receives the second configuration information, where the second configuration information may be used to indicate at least one maximum transmission power.
  • either the first configuration information or the second configuration information may be carried in radio resource control (radio resource control, RRC) signaling. It can be understood that the first configuration information or the second configuration information may also be carried in other messages, which is not limited in the embodiment of the present application.
  • RRC radio resource control
  • the energy detection threshold may be a specific value.
  • the first configuration information may be a configuration table, or a table, and the table may indicate at least one energy detection threshold.
  • the first configuration information may include multiple configuration tables, and one configuration table corresponds to one type of transmission parameter or multiple types of transmission parameters.
  • the first configuration information may include three configuration tables. The three configuration tables are the first table, the second table, and the third table. The first table corresponds to unicast, the second table corresponds to broadcast, and the third table corresponds to Multicast.
  • the first configuration information may include two configuration tables, the two configuration tables are respectively a first table and a second table, the first table corresponds to unicast, and the second table corresponds to broadcast and multicast.
  • the first configuration information is a table
  • the table may indicate the priority of the sideline information sent by the first terminal device and the second terminal device respectively, and then implicitly indicate the energy detection threshold corresponding to the priority.
  • the priority of the first information there are the priority of the first information and the priority of the second information.
  • the first value of the table corresponds to the specific priority of the first information
  • the second value in the second table corresponds to the priority of the second information. level.
  • the second configuration information may also include at least one specific value of the maximum transmit power, or may include at least one configuration table.
  • the first terminal device detects a transmission parameter used for the second terminal device to send sideline information on the first resource.
  • the first terminal device determines whether the first resource is a candidate resource according to the energy detection threshold corresponding to the transmission parameter, and the candidate resource is a candidate resource used for the first terminal device to send sideline information.
  • UE3 can perform sidelink communication with UE1 or UE2, and UE1 can also perform sidelink communication with UE2.
  • the transmission mode used by UE1, UE2, and UE3 to send sideline information can be unicast, multicast or broadcast.
  • UE1 and UE2 send sideline information through unicast or multicast
  • UE3 and UE1 send sideline information through broadcast.
  • the path loss used by UE1, UE2, and UE3 to send side-line information may be downlink path loss or side-link path loss.
  • the path loss used by UE3 to send side-line information to UE1 is downlink path loss
  • the path loss used by UE1 to send information to UE2 is side-link path loss as an example.
  • any one of these multiple terminal devices may detect transmission parameters from other terminal devices, such as the second terminal device, in the sensing window before sending sideline information to determine Whether the first resource used for the second terminal device to send the sideline information is available, that is, whether the first resource is a candidate resource for the first terminal device to send the sideline information.
  • the information used to indicate the transmission parameters of the second terminal device is called, for example, the first indication information, and the first indication information may be carried in the first control information such as the SCI.
  • the first terminal device detects the SCI from the second terminal device in the listening window, and can obtain the first indication information in the SCI, so as to determine the transmission parameter of the sideline information sent by the second terminal device.
  • the first control information is a first-level SCI
  • the first indication information is a second-level SCI format, where the second-level SCI format corresponds to the transmission mode.
  • the first terminal device detects the SCI from the second terminal device in the listening window, can obtain the second-level SCI format carried in the first-level SCI, and determine the transmission parameters of the sideline information sent by the second terminal device according to the second-level SCI format .
  • the manner in which the first terminal device determines the transmission parameters of the sideline information sent by the second terminal device may have one or a combination of the following:
  • the network device configures the side link path loss and/or downlink path loss for the second terminal device through the RRC configuration information, and the first terminal device receives the RRC configuration information to determine that the second terminal device sends the side link The path loss type of the information.
  • the RRC configuration information may be configured by the network device according to the transmission mode, and the first configuration information is implicitly associated or bound with the RRC configuration information. For example, if the transmission parameter is the path loss type, and the path loss type is associated or bound with the transmission mode, the corresponding relationship can be configured through physical layer signaling, RRC signaling, or agreed in the protocol, or implicit Associated.
  • broadcast corresponds to the downlink path loss
  • unicast and multicast correspond to the side link path loss
  • broadcast and multicast correspond to the downlink path loss
  • unicast corresponds to the side link path loss
  • Broadcast corresponds to the side link path loss
  • unicast and multicast correspond to the downlink path loss
  • broadcast and multicast correspond to the side link path loss
  • unicast corresponds to the downlink path loss
  • the path loss type is associated or bound with the transmission mode, and the corresponding relationship can be configured through physical layer signaling, configured by RRC signaling, or agreed in the protocol, or implicit
  • broadcast corresponds to the downlink path loss
  • unicast and multicast correspond to the side link path loss
  • broadcast and multicast correspond to the downlink path loss
  • unicast corresponds to the side link path loss
  • broadcast and multicast correspond to the downlink path loss
  • broadcast and multicast correspond to the downlink path loss
  • broadcast and multicast correspond to the side link path loss
  • unicast corresponds to the downlink path loss
  • broadcast and multicast correspond to the side link path loss
  • unicast corresponds to the downlink path loss
  • the network device sends DCI to the first terminal device, and the information in the TPC field of the DCI can be used to instruct the second terminal device to send the transmission parameters of the sideline information, so that the first terminal device receives the DCI according to the The information in the TPC domain determines the transmission parameter of the side line information sent by the second terminal device.
  • the network device sends RRC signaling to the first terminal device.
  • the RRC signaling can indicate the target power and path loss compensation parameters.
  • the first terminal device receives the RRC signaling, and can determine the first terminal device according to the target power and path loss compensation parameters.
  • the second terminal device sends the transmission parameter of the side line information.
  • the second terminal device can report the path loss type, or RSRP, or RSRQ, or one or more combinations of RSSI information to the network equipment, or the second terminal device can broadcast the path loss type, or RSRP, or RSRQ , Or one or more combinations of RSSI information, so that the first terminal device receives the path loss type reported or broadcast by the second terminal device, or RSRP, or RSRQ, or one or more combinations of RSSI information to determine
  • the second terminal device transmits the transmission parameter of the side line information.
  • the first terminal device determines the transmission parameter of the side line information sent by the second terminal device, and may determine the energy detection threshold corresponding to the determined transmission parameter according to the first configuration information, or according to the first configuration information and the second configuration information, and then according to the determination
  • the first terminal device performs energy detection on the first resource, for example, the first terminal device performs RSRP measurement or RSRQ measurement or RSSI measurement on the first resource to obtain a measurement result. If the energy detection on the first resource is greater than or equal to the threshold corresponding to the transmission parameter, then the first resource is not a candidate resource; on the contrary, if the energy detection on the first resource is less than the threshold corresponding to the transmission parameter, then the first resource is Candidate resources. Or, if the energy detection on the first resource is greater than the threshold corresponding to the transmission parameter, then the first resource is not a candidate resource; on the contrary, if the energy detection on the first resource is less than or equal to the threshold corresponding to the transmission parameter, then the first resource is Resources are candidate resources.
  • the first terminal device determines the first terminal device.
  • a specific plan for whether a resource is a candidate resource.
  • the first terminal device can determine whether the first resource is a candidate resource for specific solutions as follows:
  • the first configuration information includes energy detection threshold 1, energy detection threshold 2, and energy detection threshold 3.
  • Energy detection threshold 1 corresponds to broadcast
  • energy detection threshold 2 corresponds to unicast
  • energy detection threshold 3 corresponds to multicast.
  • UE3 detects, for example, an SCI from UE1 in the listening window, and determines that the transmission parameter of UE1 is, for example, unicast according to the SCI.
  • UE3 can determine that the energy detection threshold corresponding to unicast is energy detection threshold 2 according to the first configuration information.
  • UE3 performs energy detection on the first resource. If the obtained measurement result is greater than or equal to the energy detection threshold 2, UE3 determines that the first resource is not a candidate resource; on the contrary, if the measurement result is less than the energy detection threshold 2, then UE3 determines the first resource Can be a candidate resource.
  • UE3 performs energy detection on the first resource, and if the obtained measurement result is greater than the energy detection threshold 2, UE3 determines that the first resource is not a candidate resource; on the contrary, if the measurement result is less than or equal to the energy detection threshold 2, Then UE3 determines that the first resource may be a candidate resource.
  • UE3 detects, for example, an SCI from UE1 in the listening window, and determines that the transmission parameter of UE1 is, for example, multicast according to the SCI.
  • the UE3 may determine that the energy detection threshold corresponding to the multicast is the energy detection threshold 3 according to the first configuration information.
  • UE3 performs energy detection on the first resource. If the obtained measurement result is greater than or equal to the energy detection threshold 3, then UE3 determines that the first resource is not a candidate resource; on the contrary, if the measurement result is less than the energy detection threshold 3, then UE3 determines the first resource Can be a candidate resource.
  • UE3 performs energy detection on the first resource, and if the obtained measurement result is greater than the energy detection threshold 3, then UE3 determines that the first resource is not a candidate resource; on the contrary, if the measurement result is less than or equal to the energy detection threshold 3, Then UE3 determines that the first resource may be a candidate resource.
  • the measurement result obtained by UE3 measuring the first resource is compared with energy detection threshold 2 or energy detection threshold 3.
  • the probability that the measurement result detected by UE3 is less than the set energy detection threshold is smaller, which can prevent UE3 from thinking that the first resource is a candidate resource, that is, avoid UE3 Use the same resource as UE1 to send sideline information.
  • the energy detection threshold 1 may also correspond to unicast, the energy detection threshold 2 may correspond to multicast, and the energy detection threshold 3 corresponds to broadcast, which is not limited in the embodiment of the present application.
  • the first configuration information includes energy detection threshold 1 and energy detection threshold 2, and energy detection threshold 1 corresponds to broadcast, and energy detection threshold 2 corresponds to unicast and multicast.
  • UE3 determines that the transmission parameter of UE1 is unicast according to the SCI, and then can determine that the energy detection threshold corresponding to unicast is energy detection threshold 2 according to the first configuration information.
  • the UE3 performs energy detection on the first resource, compares the measurement result with the energy detection threshold 2, and determines whether the first resource is a candidate resource according to the comparison result. For example, if the measurement result is greater than or equal to the energy detection threshold 2, UE3 determines that the first resource is not a candidate resource; on the contrary, if the measurement result is less than the energy detection threshold 2, UE3 determines that the first resource may be a candidate resource.
  • UE3 determines that the first resource is not a candidate resource; on the contrary, if the measurement result is less than or equal to the energy detection threshold 2, UE3 determines that the first resource may be Candidate resources.
  • the first configuration information includes energy detection threshold 1, threshold offset 1, and threshold offset 2, and energy detection threshold 1 corresponds to broadcast, threshold offset 1 corresponds to unicast, and threshold offset 2 corresponds to multicast.
  • UE3 determines that the transmission parameter of UE1 is unicast according to the SCI, and then can determine the energy detection threshold 2 corresponding to unicast according to the first configuration information.
  • the energy detection threshold 2 is the energy detection threshold 1 and the threshold deviation. Shift the difference or sum of 1.
  • the UE3 performs energy detection on the first resource, compares the measurement result with the energy detection threshold 2, and determines whether the first resource is a candidate resource according to the comparison result. It should be understood that the determination result is similar to (2), and will not be repeated here.
  • the first configuration information includes energy detection threshold 1 and threshold offset 1, and energy detection threshold 1 corresponds to broadcast, and threshold offset 1 corresponds to unicast and multicast.
  • UE3 determines that the transmission parameter of UE1 is, for example, multicast according to the SCI, and then can determine the energy detection threshold 2 corresponding to the multicast according to the first configuration information.
  • the energy detection threshold 2 is the energy detection threshold 1 and the threshold deviation. Shift the difference or sum of 1.
  • the UE3 performs energy detection on the first resource, compares the measurement result with the energy detection threshold 2, and determines whether the first resource is a candidate resource according to the comparison result. It should be understood that the determination result is similar to (2), and will not be repeated here.
  • the specific solution for the first terminal device to determine whether the first resource is a candidate resource can be There are the following:
  • the first configuration information includes energy detection threshold 1 and energy detection threshold 2.
  • Energy detection threshold 1 corresponds to downlink path loss
  • energy detection threshold 2 corresponds to side link path loss.
  • the network device sends RRC signaling to the first terminal device, the RRC signaling may indicate the target power and path loss compensation parameters, and UE3 determines the transmission parameter of UE1 according to the target power and path loss compensation parameters as, for example, the side link path loss.
  • the UE3 can determine the energy detection threshold corresponding to the side link path loss as the energy detection threshold 2 according to the first configuration information.
  • the UE3 performs energy detection on the first resource, compares the measurement result with the energy detection threshold 2, and determines whether the first resource is a candidate resource according to the comparison result. It should be understood that the determination result is similar to (2), and will not be repeated here.
  • the energy detection threshold 1 may also correspond to the side link path loss, and the energy detection threshold 2 may correspond to the downlink path loss, which is not limited in the embodiment of the present application.
  • the UE3 determines the transmission parameters of the UE1 according to the target power and path loss compensation parameters as an example.
  • the embodiment of the present application does not limit this.
  • UE3 may also use the aforementioned TPC domain information such as DIC. Determine the transmission parameters of UE1.
  • the first configuration information includes energy detection threshold 1 and threshold offset 1.
  • Energy detection threshold 1 corresponds to downlink path loss
  • threshold offset 1 corresponds to side link path loss.
  • UE3 determines the transmission parameter of UE1 according to SCI to be, for example, the side-link path loss, and then according to the first configuration information, the energy detection threshold corresponding to the side-link path loss can be determined, for example, the energy detection threshold 2 is The difference or sum of energy detection threshold 1 and threshold offset 1.
  • the UE3 performs energy detection on the first resource, compares the measurement result with the energy detection threshold 2, and determines whether the first resource is a candidate resource according to the comparison result. It should be understood that the determination result is similar to (2), and will not be repeated here.
  • the first configuration information includes energy detection threshold 1, which corresponds to broadcast, and the second configuration information includes maximum transmit power 1, maximum transmit power 2, and maximum transmit power 3, and maximum transmit power 1 corresponds to broadcast, maximum Transmission power 2 corresponds to unicast, and maximum transmission power 3 corresponds to multicast.
  • UE3 detects, for example, an SCI from UE1 in the listening window, and determines that the transmission parameter of UE1 is unicast according to the SCI.
  • UE3 can determine that the maximum transmission power corresponding to unicast is maximum transmission power 2 according to the second configuration information.
  • UE3 can determine the offset of the energy detection threshold corresponding to unicast, that is, the difference between the maximum transmission power 2 and the maximum transmission power 1.
  • UE3 determines the energy detection threshold 2 corresponding to unicast according to the energy detection threshold 1 and the offset of the energy detection threshold.
  • the energy detection threshold 2 can be the energy detection threshold 1 minus the offset of the energy detection threshold, or the energy detection threshold 2 It can also be the offset of the energy detection threshold 1 plus the energy detection threshold.
  • the UE3 performs energy detection on the first resource, compares the measurement result with the energy detection threshold 2, and determines whether the first resource is a candidate resource according to the comparison result. It should be understood that the determination result is similar to (2), and will not be repeated
  • the energy detection threshold 1 may also correspond to unicast, the energy detection threshold 2 may correspond to multicast, and the energy detection threshold 3 corresponds to broadcast, which is not limited in the embodiment of the present application.
  • the first configuration information includes energy detection threshold 1, which corresponds to broadcasting, and the second configuration information includes maximum transmission power 1 and maximum transmission power 2, and maximum transmission power 1 corresponds to broadcasting, and maximum transmission power 2 corresponds to single Broadcast and multicast.
  • UE3 detects, for example, an SCI from UE1 in the listening window, and determines that the transmission parameter of UE1 is, for example, unicast according to the SCI. UE3 can determine that the maximum transmission power corresponding to unicast is maximum transmission power 2 according to the second configuration information. UE3 can determine the offset of the energy detection threshold corresponding to unicast, that is, the difference between the maximum transmission power 2 and the maximum transmission power 1. UE3 determines the energy detection threshold 2 corresponding to unicast according to the energy detection threshold 1 and the offset of the energy detection threshold.
  • the energy detection threshold 2 can be the energy detection threshold 1 minus the offset of the energy detection threshold, or the energy detection threshold 2 It can also be the offset of the energy detection threshold 1 plus the energy detection threshold.
  • the UE3 performs energy detection on the first resource, compares the measurement result with the energy detection threshold 2, and determines whether the first resource is a candidate resource according to the comparison result. It should be understood that the determination result is similar to (2), and will not be repeated here.
  • the first configuration information includes energy detection threshold 1, which corresponds to broadcast, and the second configuration information includes maximum transmit power 1, transmit power offset 1, and transmit power offset 2, and maximum transmit power 1 corresponds to broadcast , Transmit power offset 1 corresponds to unicast, and transmit power offset 2 corresponds to multicast.
  • UE3 detects, for example, an SCI from UE1 in the listening window, and determines that the transmission parameter of UE1 is, for example, unicast according to the SCI.
  • the UE3 can determine the transmission power offset 1 corresponding to the unicast according to the second configuration information.
  • UE3 determines the energy detection threshold 2 corresponding to unicast according to the energy detection threshold 1 and the transmission power offset 1.
  • the energy detection threshold 2 can be the energy detection threshold 1 minus the transmission power offset 1, or the energy detection threshold 2 can also be It is the energy detection threshold 1 plus the transmit power offset 1.
  • the UE3 performs energy detection on the first resource, compares the measurement result with the energy detection threshold 2, and determines whether the first resource is a candidate resource according to the comparison result. It should be understood that the determination result is similar to (2), and will not be repeated here.
  • the first configuration information includes energy detection threshold 1, which corresponds to broadcast, and the second configuration information includes maximum transmit power 1 and transmit power offset 1, and maximum transmit power 1 corresponds to broadcast, and transmit power offset 1. Corresponds to unicast and multicast.
  • UE3 detects, for example, an SCI from UE1 in the listening window, and determines that the transmission parameter of UE1 is, for example, unicast according to the SCI.
  • the UE3 can determine the transmission power offset 1 corresponding to the unicast according to the second configuration information.
  • UE3 determines the energy detection threshold 2 corresponding to unicast according to the energy detection threshold 1 and the transmission power offset 1.
  • the energy detection threshold 2 can be the energy detection threshold 1 minus the transmission power offset 1, or the energy detection threshold 2 can also be It is the energy detection threshold 1 plus the transmit power offset 1.
  • the UE3 performs energy detection on the first resource, compares the measurement result with the energy detection threshold 2, and determines whether the first resource is a candidate resource according to the comparison result. It should be understood that the determination result is similar to (2), and will not be repeated here.
  • the embodiment of the present application can adjust the energy detection threshold. For example, if the total number of all available resources determined by the first terminal device is less than, for example, 20% of all resources in the resource pool, the current energy detection threshold can be increased in steps of, for example, 3dB, until the total number of all available resources is greater than Or equal to 20% of all resources.
  • the first terminal device can determine whether the first resource is a candidate resource, so as to reduce multiple terminal devices. Potential interference and resource conflicts when sending data.
  • MCS index table 1 In the NR system, three modulation and coding schemes (MCS) index tables are supported, such as the current table (table) 1 (Table 5.1.3.1-1: MCS index table 1 for PDSCH), table 2 (Table 5. 1.3.1-2: MCS index table2 for PDSCH) and table3 (Table5.1.3.1-3: MCS index table3 for PDSCH), the three tables correspond to different modulation methods. That is, each table can indicate the value of multiple MCS.
  • the network equipment configures the MCS index value, and the terminal device can determine the MCS from the table according to the MCS index.
  • the MCS index IMCS of table1 and table3 ranges from 0 to 31, IMCS ranges from 0 to 28, MCS has a certain value, and the value of IMCS ranges from 29 to 31, corresponding to the reserved state; IMCS of table2 In the range of 0-27, MCS has a certain value, and the range of IMCS is 28-31, corresponding to the reserved state.
  • the embodiments of the present application provide a communication method by which the network device can clearly instruct the terminal device to adopt one of the multiple supported MCS configuration modes.
  • the embodiment of the present application provides a communication method. Please refer to FIG. 6, which is a flowchart of the method.
  • the application of this method to the application scenario shown in FIG. 2 or FIG. 4 is taken as an example.
  • the method can be executed by two communication devices, for example, the first communication device and the second communication device.
  • the first communication device may be a terminal device or a communication device capable of supporting the terminal device to realize the functions required by the method
  • the second communication device may be a network device or a communication device capable of supporting the network device to realize the functions required by the method (For example, chip system). The same is true for the second communication device.
  • the second communication device may be a terminal device or a communication device capable of supporting the functions required by the terminal device to implement the method, or the second communication device may be a network device or capable of supporting a network device to implement the method.
  • Communication device with required functions such as chip system.
  • the first communication device and the second communication device are both devices, or the first communication device is a terminal device, and the second communication device is capable of supporting a network.
  • the network device is, for example, a base station.
  • FIG. 6 is a flowchart of the communication method provided by the embodiment of this application.
  • the method is executed by the network equipment and the terminal device as an example, that is, the first communication device is the terminal device, and the first communication device is the terminal device.
  • the second communication device is a network device as an example.
  • the first communication device may be any one of the three terminal devices shown in FIG. 2 or the two terminal devices shown in FIG. 4 , Such as on-board equipment, or RUS, etc.
  • the second communication device may be a network device, such as a base station serving a terminal device. It should be noted that the embodiment of the present application only takes execution through network equipment and terminal devices as an example, and is not limited to this scenario.
  • FIG. 6 is a flow chart of the method. The flow of the method is described as follows.
  • the network device sends first indication information to the terminal device, and the terminal device receives the first indication information, where the first indication information is used to indicate a first determination mode among multiple MCS determination modes.
  • the network device sending the first instruction information to the terminal device may be the network device generating the first instruction information and sending the first instruction information to the terminal device.
  • the first indication information may be used to indicate one of the multiple determination methods of the MCS.
  • multiple MCS configurations are supported.
  • the embodiment of the present application may indicate one of the multiple configuration modes through the first indication information. It should be understood that the determination manner can also be understood as a configuration manner.
  • the embodiment of the present application takes as an example the determination methods supporting three MCSs, and the three determination methods include, for example, determination method 1, determination method 2, and determination method 3.
  • the first determination method may be determination method 1 or determination method 2 or determination method 3.
  • Determining method 1 may, for example, be a method of configuring a certain MCS index for the terminal device.
  • the determination method 2 may be, for example, a method in which the terminal device autonomously selects the MCS within the range of all MCS indexes.
  • the determination method 3 may be, for example, an MCS index range configured by the terminal device in the network device, for example, a method of autonomously selecting an MCS within a first index range, where the first index range is a subset of the index range of all MCSs.
  • the first index range may be predefined, or may be an optional range of the MCS index configured by the network device, and the terminal device independently selects the MCS within the optional range.
  • the first indication information may be carried in the DCI.
  • the first indication information may be carried in the MCS field of the downlink control information DCI, and the value of the reserved bit in the MCS field indicates the MCS.
  • the first determination method, the first determination method is the determination method 1 or the determination method 2 or the determination method 3 described above.
  • the index of the MCS field of table1 and table3 is 0-28, MCS has a certain value, the index of the MCS field of table2 is 0-27, and the MCS has a certain value, the index of the MCS field of table1 or table3 is 29-31, you can Indicate the determination method 1 or the determination method 2 or the determination method 3.
  • the index of the MCS field of table1 or table3 is 28 to 31, and the determination method 1 or the determination method 2 or the determination method 3 can be indicated.
  • the value of the index corresponding to the reserved bits of the MCS domain is 31, indicating the above determination method 2, that is, instructing the terminal device to autonomously select the value of the MCS within the range of all MCS indexes.
  • all MCS indexes range from 0 to 28, then the value of the reserved bits of the MCS field instructs the end device to select the value of MCS from 0 to 28; for Table2, the range of all MCS indexes If the value is 0-27, the value of the reserved bit in the MCS field instructs the end device to select the value of MCS from 0-27.
  • the index value corresponding to the reserved bits of the MCS domain is 30, which may indicate the above determination method 3, that is, instruct the terminal device to select the value of MCS within the first index range configured by the network device.
  • the first index range may be configured by the network device through RRC signaling.
  • the first index range may be all MSC index ranges.
  • the first index range is predefined.
  • the predefined first index range is the entire MCS index range, or the entire index range includes the first part and the second part, and the first index range may be the first part or The second part, the first part may be a part with a smaller MCS index, and the second part may be a part with a larger MCS index.
  • the first index range may be a range composed of parts with odd indexes in all MCS index ranges, and may correspond to the first part.
  • the first index range may be a range composed of parts with an even number of indexes in all MCS index ranges, and may correspond to the second part.
  • the predefined first index range is associated with the transmission mode or service priority. For example, unicast corresponds to the first part, multicast broadcast corresponds to the second part, services with high priority correspond to the first part, and services with low priority correspond to the first part. Two parts.
  • the predefined first index range is associated with the transmission mode or service priority. For example, multicast broadcast corresponds to the first part, unicast corresponds to the second part, services with low priority correspond to the first part, and services with high priority correspond to the first part. Two parts.
  • the index value corresponding to the reserved bits of the MCS domain is 29 or 28, indicating the above determination method 1, that is, indicating that the MCS adopted by the terminal device is the MCS selected by the network device.
  • the design scheme does not need to modify the value range and index of the MCS in the DCI, and can be compatible with the current protocol regulations, and can support the newly added determination method 2 and determination method 3.
  • the correspondence between the value of the reserved bit in the MCS field and the number of the determination mode is only an illustration.
  • the value of the index corresponding to the reserved bit of the MCS domain is 28 or 29, which can indicate the above determination method 1
  • the index corresponding to the reserved bit of the MCS field is 30, which may indicate the above determination method 2.
  • the value of the index corresponding to the reserved bit of the MCS domain is 31, which may indicate the above determination method 3.
  • the embodiment of the present application does not limit the correspondence between the value of the index corresponding to the reserved bit of the MCS domain and the above determination method.
  • the meaning of the reserved bits of the MCS field is defined according to whether the current transmission is the initial transmission or retransmission. If the current transmission is the initial transmission, that is, the information or the transmission block (transmit block, TB) ) Is the first transmission, the index corresponding to the reserved bits of the MCS domain is 31, which instructs the terminal device to select the value of MCS within the index range of all MCSs, if the index corresponding to the reserved bits of the MCS is 30 or 29 , Instruct the terminal device to select the value of MCS in the first part or the second part, and the definitions of the first part and the second part are as above, and will not be repeated here.
  • the first indication information may be carried in DCI and RRC signaling, and the specific first indication information may have different designs.
  • the RRC signaling is used to configure at least one index range of the MCS, and the above-mentioned first index range is a subset of the at least one index range.
  • RRC signaling can be used to configure the first index range in the foregoing possible implementation manners.
  • the RRC may configure multiple index ranges, and the first indication information may also indicate which of the multiple index ranges the first index range is through the MCS field of the DCI.
  • RRC signaling configures three index ranges, and the value of reserved bits in the MCS field is 30, indicating the above determination method 3, that is, instructing the terminal device to select the value of MCS within the first index range configured by the network device.
  • the reserved bits of the MCS field can also be multiplexed to indicate the transmission type of the transport block.
  • the transmission type can include initial transmission, retransmission, or transmission configured through higher layer signaling, such as a configured grant (CG) activation command. That is, according to the transmission block (transport block, TB) configured for initial transmission, retransmission, or high-level signaling, the content of the reserved bit indication in the MCS field is different.
  • CG configured grant
  • the reserved bit of the MCS field is used to indicate that the transmission type is initial transmission
  • the first value of the index corresponding to the reserved bit of the MCS field is used to instruct the terminal device to select the MCS within the first index range of the MSC
  • the MCS The second value of the index corresponding to the reserved bit of the domain is used to instruct the terminal device to select the MCS within the second index range of the MSC.
  • the first index range is a subset of at least one index range
  • the second index range is at least one index. A subset of the range. Both the first index range and the second index range may be configured through RRC signaling.
  • the terminal device is instructed to autonomously select the value of MCS within the range of all MCS indexes; if the index corresponding to the reserved bit in the MCS domain is 30, it indicates that this The transmission status of the secondary TB is the initial transmission, then the first index range can be the range indicated by the first part above, for example, it can be [0,13], that is, the index value corresponding to the reserved bit of the MCS domain is 30 and can also indicate the terminal The device selects the value of MCS in [0, 13]; if the index corresponding to the reserved bit of the MCS field is 29 or 28, indicating that the transmission status of this TB is the initial transmission, then the first index range can be the above The second part indicates the range, such as [14, 28 or 27], that is, the index value corresponding to the reserved bit of the MCS field is 30, and it can also instruct the terminal device to select the value of MCS in [14, 28 or 27] .
  • the index corresponding to the reserved bit in the MCS domain may also instruct the terminal device to select the value of MCS in [0, 13].
  • the reserved bits of the MCS field are used to indicate that the transmission type is retransmission or transmission configured through higher layer signaling, and the reserved bits of the MCS field are used to indicate that the MCS is the previous corresponding MCS of the same transmission block.
  • the terminal device determines the MCS to be adopted according to the first determination manner.
  • the terminal device may determine the first determination method according to the received first indication information, and further determine the MCS to be adopted according to the first determination method.
  • the first indication information may be sent by the network device to the terminal device through DCI, or may be sent by the network device to the terminal device through DCI and RRC signaling. According to different transmission modes of the first indication information, the MCS that the terminal device determines to adopt according to the first indication information is also different.
  • the first indication information is carried in DCI.
  • the value range and index of the MCS field in the current DCI may not be modified. That is, the index of the MCS field of table1 and table3 is 0-28, and the MCS has a certain value, and the index of the MCS field of table2 is 0-27, and the MCS has a certain value. Any one of the index values 29 to 31 corresponding to the reserved bits of the MCS fields of table1 and table3 can be used to indicate any of the above three determination methods. Different index values can indicate different determination methods. It should be understood that the index corresponding to the reserved bits of the MCS field of table2, that is, any index from 28 to 31, can be used to indicate any of the above three determination methods. Different index values can indicate different determination methods.
  • the index value corresponding to the reserved bit in the MCS domain is 31, indicating the above determination method 2, that is, instructing the terminal device to autonomously select the value of the MCS within the range of all MCS indexes; relatively, the index corresponding to the reserved bit in the MCS domain
  • a value of 30 can indicate the above determination method 3, that is, instruct the terminal device to select the value of MCS within the first index range configured by the network device; on the contrary, the index corresponding to the reserved bit of the MCS domain is 29 or 28 , Indicate the above determination method 1, that is, instruct the network equipment to select the MCS for the terminal device. Take this as an example below.
  • the value of MCS can be selected from all MCS indexes of table1 or table3, namely 0-28, or Select the value of MCS in all MCS indexes of table2, namely 0-27. If it is determined that the index corresponding to the reserved bit of the MCS field corresponding to the first indication information is 30, the index of table1 or table3 may be in the first index range of 0-28, for example [0, 13], select MCS The value can also be in the first index range of table2, for example, 0-27, for example, [0, 13] to select the value of MCS.
  • the above determination method 1 is indicated, that is, the MCS selected by the network device for the terminal device is indicated. It should be understood that the first index range may be predefined, or may be notified to the terminal device by the network device through RRC signaling.
  • the first indication information is carried in DCI and RRC signaling.
  • the RRC signaling is used to configure the first index range, and the above-mentioned first indication information is carried in the DCI, and the design method of the first indication information is used.
  • the index corresponding to the reserved bits of the MCS field corresponding to the first indication information is 30, and the terminal device may determine to select the value of MCS in the index of table1 or table3, such as the first index range in 0-28, or
  • the index of table2 is, for example, the value of MCS selected in the first index range of 0-27.
  • the terminal device determines the first index range according to the RRC signaling from the network device, and may select the value of the MCS within the first index range of table1 or table2 or table3.
  • the reserved bit multiplexing of the MCS domain indicates the transmission type of the transport block.
  • the terminal device may determine to select the value of MCS within the first index range of the index of table1 or table3, such as 0-28, or the index of table2 may be, for example, Select the value of MCS in the first index range of 0-27. If the reserved bit of the MCS field also indicates that the transmission status of this TB is the initial transmission, the terminal device can determine that the first index range is [0, 13], and the terminal device selects the value of MCS in [0, 13].
  • the embodiment of the present application can clearly instruct the terminal device to select the determination mode of MCS, and adopt the reserved bit indication of the MCS domain of DCI, which can be compatible with existing protocols.
  • the methods provided in the embodiments of the present application are respectively introduced from the perspective of interaction between network equipment and terminal devices.
  • the network equipment and terminal devices may include hardware structures and/or software modules, and the above functions are realized in the form of hardware structures, software modules, or hardware structures plus software modules. . Whether a certain function of the above-mentioned functions is executed by a hardware structure, a software module, or a hardware structure plus a software module depends on the specific application and design constraint conditions of the technical solution.
  • FIG. 7 is a schematic block diagram of a communication device 700 according to an embodiment of the application.
  • the communication device 700 can correspondingly implement the functions or steps implemented by the network device or the terminal device in the foregoing method embodiments.
  • the communication device 700 may include a transceiver module 710 and a processing module 720.
  • a storage unit may also be included, and the storage unit may be used to store instructions (code or program) and/or data.
  • the transceiver module 710 and the processing module 720 may be coupled with the storage unit.
  • the processing module 720 may read instructions (codes or programs) and/or data in the storage unit to implement corresponding methods.
  • the above-mentioned units can be set independently, or partly or fully integrated.
  • the communication device 700 can correspondingly implement the behaviors and functions of the terminal device in the foregoing method embodiments.
  • the communication device 700 may be a terminal device, or a component (such as a chip or a circuit) applied to the terminal device.
  • the processing module 720 is used to perform all the operations performed by the terminal device in the embodiment shown in FIG. 5 except for the transceiving operation, and/or other processes used to support the technology described herein.
  • the transceiver module 710 can be used to perform all receiving or sending operations performed by the terminal device in the embodiment shown in FIG. 5, such as S501 and S502 in the embodiment shown in FIG. Other processes of the technology.
  • the processing module 720 is configured to detect a transmission parameter received by the transceiver module for the second terminal device to send sideline information on the first resource.
  • the transmission parameter includes a transmission mode or a path loss type, and the transmission mode includes broadcast. , Unicast and multicast, the path loss types include side link path loss and downlink path loss; and according to the energy detection threshold corresponding to the transmission parameter, it is determined whether the first resource is a candidate resource, and the candidate resource is used for the first
  • the terminal device transmits the candidate resource of the side line information.
  • processing module 720 is used to:
  • the energy detection on the first resource is greater than or equal to the threshold corresponding to the transmission parameter, it is determined that the first resource is not a candidate resource; or,
  • the energy detection on the first resource is less than the threshold corresponding to the transmission parameter, it is determined that the first resource is a candidate resource.
  • processing module 720 is used to:
  • the first control information from the second terminal device is detected in the listening window, and the first control information is used to indicate the transmission mode.
  • the first control information is the first-level side link control information SCI
  • the first control information includes the indication information of the second-level SCI format
  • the second-level SCI format corresponds to the transmission mode
  • the transceiver module 710 is further configured to receive first configuration information from the network device, where the first configuration information is used to indicate at least one energy detection threshold, where:
  • the at least one energy detection threshold includes a first energy detection threshold, a second energy detection threshold, and a third energy detection threshold.
  • the first energy detection threshold corresponds to broadcasting
  • the second energy detection threshold corresponds to unicast
  • the third energy detection threshold corresponds to multicast
  • the at least one energy detection threshold includes a first energy detection threshold and a second energy detection threshold, the first energy detection threshold corresponds to unicast, and the second energy detection threshold corresponds to broadcast and multicast; or,
  • the at least one energy detection threshold includes a first energy detection threshold and a second energy detection threshold.
  • the first energy detection threshold corresponds to broadcasting
  • the second energy detection threshold corresponds to unicast and multicast.
  • the transceiver module 710 is further configured to receive first configuration information from the network device, the first configuration information is used to indicate at least one energy detection threshold and at least one threshold offset, and the at least one energy detection threshold includes The first energy detection threshold, where,
  • the first energy detection threshold corresponds to unicast, at least one threshold offset includes the first threshold offset, and the first threshold offset corresponds to broadcast and multicast; or,
  • the first energy detection threshold corresponds to unicast
  • at least one threshold offset includes a first threshold offset and a second threshold offset
  • the first threshold offset corresponds to broadcast
  • the second threshold offset corresponds to multicast
  • the first energy detection threshold corresponds to broadcast, at least one threshold offset includes the first threshold offset, and the first threshold offset corresponds to unicast and multicast; or,
  • the first energy detection threshold corresponds to broadcasting
  • at least one threshold offset includes a first threshold offset and a second threshold offset
  • the first threshold offset corresponds to unicast
  • the second threshold offset corresponds to multicast.
  • the transceiver module 710 is further configured to receive first configuration information from the network device, where the first configuration information is used to indicate at least one energy detection threshold, where:
  • the at least one energy detection threshold includes a first energy detection threshold and a second energy detection threshold, the first energy detection threshold corresponds to the side link path loss, and the second energy detection threshold corresponds to the downlink path loss; or,
  • the at least one energy detection threshold includes a first energy detection threshold, the first configuration information is also used to indicate a threshold offset, the first energy detection threshold is the energy detection threshold corresponding to the downlink path loss, and the threshold offset is the first energy detection threshold The difference between the energy detection threshold and the side link path loss; or,
  • the at least one energy detection threshold includes a first energy detection threshold.
  • the first configuration information is also used to indicate a threshold offset.
  • the first energy detection threshold is the energy detection threshold corresponding to the side link path loss, and the threshold offset is the first energy detection. The difference between the threshold and the energy detection threshold of the downlink path loss.
  • the transceiver module 710 is further configured to receive first configuration information from the network device, where the first configuration information is used to indicate the first energy detection threshold;
  • the processing module 720 is further configured to determine a second energy detection threshold corresponding to the transmission mode according to at least one maximum transmission power of the second terminal device and the first configuration information.
  • the transceiver module 710 is further configured to receive second configuration information from the network device, and the second configuration information is used to indicate at least one maximum transmit power, where:
  • the at least one maximum transmission power includes a first maximum transmission power, a second maximum transmission power, and a third maximum transmission power, the first maximum transmission power corresponds to broadcasting, the second maximum transmission power corresponds to unicast, and the third maximum transmission power corresponds to multicast; or,
  • the at least one maximum transmission power includes a first maximum transmission power and a second maximum transmission power, the first maximum transmission power corresponds to broadcasting, and the second maximum transmission power corresponds to unicast or multicast; or,
  • the at least one maximum transmission power includes a first maximum transmission power and a second maximum transmission power, the first maximum transmission power corresponds to unicast, and the second maximum transmission power corresponds to broadcast or multicast.
  • the transceiver module 710 is further configured to receive second configuration information from the network device, and the second configuration information is used to indicate the first maximum transmission power and at least one transmission power offset, where:
  • the first maximum transmission power corresponds to unicast
  • the at least one transmission power offset includes the first transmission power offset
  • the first transmission power offset corresponds to broadcast or multicast
  • the first maximum transmission power corresponds to unicast
  • at least one transmission power offset includes a first transmission power offset and a second transmission power offset
  • the first transmission power offset corresponds to broadcasting
  • the second transmission power offset corresponds to multicast
  • the first maximum transmission power corresponds to broadcasting
  • the at least one transmission power offset includes the first transmission power offset, and the first transmission power offset corresponds to unicast or multicast; or,
  • the first maximum transmission power corresponds to broadcasting, and the at least one transmission power offset includes a first transmission power offset and a second transmission power offset.
  • the first transmission power offset corresponds to unicast, and the second transmission power offset corresponds to multicast.
  • processing module 720 is used to:
  • the transmit power threshold offset is the difference between the first maximum transmit power and the maximum transmit power corresponding to the first energy detection threshold
  • the second energy detection threshold is determined according to the transmit power threshold offset and the first energy detection threshold.
  • processing module 720 in the embodiment of the present application may be implemented by a processor or a processor-related circuit component
  • transceiver module 710 may be implemented by a transceiver or a transceiver-related circuit component.
  • the communication apparatus 700 can correspondingly implement the behaviors and functions of the network equipment in the foregoing method embodiments.
  • the communication device 700 may be a network device, or a component (such as a chip or a circuit) applied to the network device.
  • the processing module 720 is used to perform all the operations performed by the network device in the embodiment shown in FIG. 5 except for the transceiving operation, and/or other processes used to support the technology described herein.
  • the transceiver module 710 can be used to perform all the receiving or sending operations performed by the network device in the embodiment shown in FIG. 5, such as S501 and S502 in the embodiment shown in FIG. Other processes of the technology.
  • the transceiver module 710 is configured to send the first configuration information determined by the processing module 720 to the terminal device.
  • the first configuration information is used to indicate at least one energy detection threshold, and the at least one energy detection threshold is used to send sideline information.
  • At least one transmission mode corresponding to or corresponding to at least one path loss type used to send side-line information the transmission parameter includes a transmission mode or a path loss type, the transmission mode is broadcast, unicast, and multicast, and the path loss type includes side Uplink path loss and downlink path loss.
  • the processing module 720 is further configured to configure the path loss type according to the transmission mode.
  • the at least one energy detection threshold includes a first energy detection threshold, a second energy detection threshold, and a third energy detection threshold.
  • the first energy detection threshold corresponds to broadcasting, and the second energy detection threshold corresponds to unicast.
  • the third energy detection threshold corresponds to multicast; or,
  • the at least one energy detection threshold includes a first energy detection threshold and a second energy detection threshold, the first energy detection threshold corresponds to unicast, and the second energy detection threshold corresponds to broadcast and multicast; or,
  • the at least one energy detection threshold includes a first energy detection threshold and a second energy detection threshold.
  • the first energy detection threshold corresponds to broadcasting
  • the second energy detection threshold corresponds to unicast and multicast.
  • the at least one energy detection threshold includes a first energy detection threshold, and the first configuration information is also used to indicate at least one threshold offset, where:
  • the first energy detection threshold corresponds to unicast, at least one threshold offset includes the first threshold offset, and the first threshold offset corresponds to broadcast and multicast; or, at least one threshold offset includes the first threshold offset and the second threshold offset Shift, the first threshold offset corresponds to broadcast, and the second threshold offset corresponds to multicast; or,
  • the first energy detection threshold corresponds to broadcast, at least one threshold offset includes the first threshold offset, and the first threshold offset corresponds to unicast and multicast; or, at least one threshold offset includes the first threshold offset and the second threshold offset
  • the first threshold offset corresponds to unicast, and the second threshold offset corresponds to multicast.
  • the at least one energy detection threshold includes a first energy detection threshold and a second energy detection threshold.
  • the first energy detection threshold is the energy detection threshold corresponding to the side link path loss, and the second energy detection threshold Corresponding to the downlink path loss; or,
  • the at least one energy detection threshold includes a first energy detection threshold, and the configuration information is also used to indicate a threshold offset.
  • the first energy detection threshold is the energy detection threshold corresponding to the downlink path loss
  • the threshold offset is the first energy detection threshold and the side The difference in the energy detection threshold of the uplink path loss; or,
  • the at least one energy detection threshold includes a first energy detection threshold, and the configuration information is also used to indicate a threshold offset.
  • the first energy detection threshold is a threshold for the side link path loss
  • the threshold offset is the first energy detection threshold and the downlink The absolute value of the difference in the energy detection threshold of the path loss.
  • the processing module 720 is further configured to generate second configuration information, where the second configuration information is used to indicate at least one maximum transmission power; the transceiver module 710 is also configured to send second configuration information to the terminal device.
  • the at least one maximum transmission power includes a first maximum transmission power, a second maximum transmission power, and a third maximum transmission power.
  • the first maximum transmission power corresponds to broadcasting, and the second maximum transmission power corresponds to unicast.
  • the third maximum transmit power corresponds to multicast; or,
  • the at least one maximum transmission power includes a first maximum transmission power and a second maximum transmission power, the first maximum transmission power corresponds to broadcasting, and the second maximum transmission power corresponds to unicast or multicast; or,
  • the at least one maximum transmission power includes a first maximum transmission power and a second maximum transmission power, the first maximum transmission power corresponds to unicast, and the second maximum transmission power corresponds to broadcast or multicast.
  • the at least one maximum transmit power includes the first maximum transmit power
  • the second configuration information is also used to indicate at least one transmit power offset, where:
  • the first maximum transmission power corresponds to unicast
  • the at least one transmission power offset includes the first transmission power offset
  • the first transmission power offset corresponds to broadcast or multicast
  • the first maximum transmission power corresponds to unicast
  • at least one transmission power offset includes a first transmission power offset and a second transmission power offset
  • the first transmission power offset corresponds to broadcasting
  • the second transmission power offset corresponds to multicast
  • the first maximum transmission power corresponds to broadcasting
  • the at least one transmission power offset includes the first transmission power offset, and the first transmission power offset corresponds to unicast or multicast; or,
  • the first maximum transmission power corresponds to broadcasting, and the at least one transmission power offset includes a first transmission power offset and a second transmission power offset.
  • the first transmission power offset corresponds to unicast, and the second transmission power offset corresponds to multicast.
  • the at least one energy detection threshold includes a first energy detection threshold.
  • the communication device 700 can correspondingly implement the behaviors and functions of the terminal device in the foregoing method embodiments.
  • the communication device 700 may be a terminal device, or a component (such as a chip or a circuit) applied to the terminal device.
  • the processing module 720 is used to perform all the operations performed by the terminal device in the embodiment shown in FIG. 6 except for the transceiving operation, and/or other processes used to support the technology described herein, for example, FIG. S602 in the illustrated embodiment, and/or other processes used to support the technology described herein.
  • the transceiver module 710 may be used to perform all receiving or sending operations performed by the terminal device in the embodiment shown in FIG. 6, such as S601 in the embodiment shown in FIG. 6, and/or used to support the technology described herein Other processes.
  • the transceiver module 710 is configured to receive first indication information from the network device, the first indication information is used to indicate the first determination mode among the multiple determination modes of the modulation and coding mode MCS; the processing module 720 is configured to Determine the MCS to be adopted according to the first determination method.
  • the method may be executed by a first device, and the first device may be a communication device or a communication device capable of supporting the communication device to implement the functions required by the method, such as a chip system or a communication module in the communication device.
  • the communication device may be a terminal device.
  • the first indication information is carried in the MCS field of the downlink control information DCI, and the value of the reserved bit in the MCS field is used to indicate the first determination method, where:
  • the first determination method is that the terminal device selects MCS within the index range of all MSCs, or the first determination method is that the terminal device selects MCS within the first index range of the MSC, and the first index range is a subset of the index range of all MSCs. .
  • the first indication information is also carried in radio resource control RRC signaling.
  • the RRC signaling is used to configure at least one index range of the MCS, and the first index range is a subset of at least one index range.
  • the reserved bits of the MCS field are also used to indicate the transmission type of the transport block.
  • the transmission type includes initial transmission, retransmission, or transmission configured through higher layer signaling, where:
  • the reserved bits in the MCS field are used to indicate that the transmission type is initial transmission, and the first value of the reserved bits in the MCS field is used to instruct the terminal device to select MCS within the first index range of the MSC.
  • the second value is used to instruct the terminal device to select the MCS within the second index range of the MSC, the first index range is a subset of at least one index range, and the second index range is a subset of at least one index range; or,
  • the reserved bits in the MCS field are used to indicate that the transmission type is retransmission or the transmission configured through higher layer signaling, and the reserved bits in the MCS field are used to indicate that the MCS is the previous corresponding MCS of the same transmission block.
  • the communication apparatus 700 can correspondingly implement the behaviors and functions of the network equipment in the foregoing method embodiments.
  • the communication device 700 may be a network device, or a component (such as a chip or a circuit) applied to the network device.
  • the processing module 720 is used to perform all the operations performed by the network device in the embodiment shown in FIG. 6 except for the transceiving operation, and/or other processes used to support the technology described herein.
  • the transceiver module 710 can be used to perform all receiving or sending operations performed by the network device in the embodiment shown in FIG. 6, such as S601 in the embodiment shown in FIG. 6, and/or used to support the technology described herein Other processes.
  • the transceiver module 710 is configured to send the first indication information determined by the processing module 720 to the terminal device, and the first indication information is used to indicate the first determination mode among the multiple determination modes of the modulation and coding mode MCS.
  • the first indication information is carried in the MCS field of the downlink control information DCI, and the value of the reserved bit in the MCS field is used to indicate the first determination method, where:
  • the first determination method is that the terminal device selects MCS within the index range of all MSCs, or the first determination method is that the terminal device selects MCS within the first index range of the MSC, and the first index range is a subset of the index range of all MSCs. .
  • the first indication information is also carried in radio resource control RRC signaling.
  • the RRC signaling is used to configure at least one index range of the MCS, and the first index range is a subset of at least one index range.
  • the reserved bits of the MCS field are also used to indicate the transmission type of the transport block.
  • the transmission type includes initial transmission, retransmission, or transmission configured through higher layer signaling, where:
  • the reserved bits in the MCS field are used to indicate that the transmission type is initial transmission, and the first value of the reserved bits in the MCS field is used to instruct the terminal device to select MCS within the first index range of the MSC.
  • the second value is used to instruct the terminal device to select the MCS within the second index range of the MSC, the first index range is a subset of at least one index range, and the second index range is a subset of at least one index range; or,
  • the reserved bits in the MCS field are used to indicate that the transmission type is retransmission or the transmission configured through higher layer signaling, and the reserved bits in the MCS field are used to indicate that the MCS is the previous corresponding MCS of the same transmission block.
  • FIG. 8 shows a communication device 800 provided by an embodiment of this application, where the communication device 800 may be a terminal device, which can implement the function of the terminal device in the method provided in the embodiment of this application, or the communication device 800 may be a network device , Can realize the function of the network device in the method provided in the embodiment of the present application; the communication device 800 may also be a device that can support the network device to implement the corresponding function in the method provided in the embodiment of the present application.
  • the communication device 800 may be a chip system.
  • the chip system may be composed of chips, or may include chips and other discrete devices.
  • the foregoing transceiver module 710 may be a transceiver, and the transceiver is integrated in the communication device 800 to form a communication interface 810. It should be understood that the transceiver module 710 may also be a separate sending module and receiving module.
  • the communication device 800 includes at least one processor 820, which is configured to implement or support the communication device 800 to implement the functions of the first network device or the second network device or the terminal device in the method provided in the embodiments of the present application.
  • processor 820 is configured to implement or support the communication device 800 to implement the functions of the first network device or the second network device or the terminal device in the method provided in the embodiments of the present application.
  • the communication device 800 includes at least one processor 820, which is configured to implement or support the communication device 800 to implement the functions of the first network device or the second network device or the terminal device in the method provided in the embodiments of the present application.
  • the communication device 800 may further include at least one memory 830 for storing program instructions and/or data.
  • the memory 830 and the processor 820 are coupled.
  • the coupling in the embodiments of the present application is an indirect coupling or communication connection between devices, units or modules, and may be in electrical, mechanical or other forms, and is used for information exchange between devices, units or modules.
  • the processor 820 may cooperate with the memory 830 to operate.
  • the processor 820 may execute program instructions and/or data stored in the memory 830, so that the communication device 800 implements a corresponding method. At least one of the at least one memory may be included in the processor.
  • the communication device 800 may further include a communication interface 810 for communicating with other devices through a transmission medium, so that the device used in the communication device 800 can communicate with other devices.
  • a communication interface 810 for communicating with other devices through a transmission medium, so that the device used in the communication device 800 can communicate with other devices.
  • the other device is the first network device or the second network device; or, when the communication device is the first network device or the second network device, the other device is a terminal equipment.
  • the processor 820 may use the communication interface 810 to send and receive data.
  • the communication interface 810 may specifically be a transceiver.
  • the specific connection medium between the aforementioned communication interface 810, the processor 820, and the memory 830 is not limited in the embodiment of the present application.
  • the memory 830, the processor 820, and the communication interface 810 are connected by a bus 840 in FIG. 8.
  • the bus is represented by a thick line in FIG. , Is not limited.
  • the bus can be divided into an address bus, a data bus, a control bus, and so on. For ease of representation, only one thick line is used in FIG. 8, but it does not mean that there is only one bus or one type of bus.
  • the processor 820 may be a general-purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component, which can implement Or execute the methods, steps, and logical block diagrams disclosed in the embodiments of the present application.
  • the general-purpose processor may be a microprocessor or any conventional processor or the like.
  • the steps of the method disclosed in the embodiments of the present application may be directly embodied as being executed and completed by a hardware processor, or executed and completed by a combination of hardware and software modules in the processor.
  • the memory 830 may be a non-volatile memory, such as a hard disk drive (HDD) or a solid-state drive (SSD), etc., or a volatile memory (volatile memory).
  • a non-volatile memory such as a hard disk drive (HDD) or a solid-state drive (SSD), etc.
  • a volatile memory volatile memory
  • RAM random-access memory
  • the memory is any other medium that can be used to carry or store desired program codes in the form of instructions or data structures and that can be accessed by a computer, but is not limited to this.
  • the memory in the embodiments of the present application may also be a circuit or any other device capable of realizing a storage function for storing program instructions and/or data.
  • the communication device in the foregoing embodiment may be a terminal device or a circuit, and may also be a chip applied to a terminal device or other combination devices or components having the functions of the foregoing terminal device.
  • the transceiver unit may be a transceiver, which may include an antenna and a radio frequency circuit, etc.
  • the processing module may be a processor, such as a central processing unit (CPU).
  • the transceiver unit may be a radio frequency unit
  • the processing module may be a processor.
  • the transceiver unit may be an input/output interface of the chip system
  • the processing module may be a processor of the chip system.
  • Fig. 9 shows a schematic structural diagram of a simplified communication device. It is easy to understand and easy to illustrate.
  • the communication device takes the network device as a base station as an example.
  • the base station may be applied to the system shown in FIG. 4, and may be the network device in FIG. 4, which performs the functions of the network device in the foregoing method embodiment.
  • the network device 900 may include one or more radio frequency units, such as a remote radio unit (RRU) 910 and one or more baseband units (BBU) (also referred to as digital units, digital units, DU). )920.
  • RRU 910 may be called a communication module, which corresponds to the transceiver module 710 in FIG. 7.
  • the communication module may also be called a transceiver, a transceiver circuit, or a transceiver, etc., which may include at least one antenna 911 ⁇ RF unit 912.
  • the RRU 910 part is mainly used for receiving and sending of radio frequency signals and conversion of radio frequency signals and baseband signals, for example, for sending instruction information to terminal equipment.
  • the BBU 920 part is mainly used for baseband processing, control of the base station, and so on.
  • the RRU 910 and the BBU 920 may be physically set together, or may be physically separated, that is, a distributed base station.
  • the BBU 920 is the control center of the base station, and may also be called a processing module, which may correspond to the processing module 720 in FIG. 7, and is mainly used to complete baseband processing functions, such as channel coding, multiplexing, modulation, and spreading.
  • the BBU processing module
  • the BBU may be used to control the base station to execute the operation procedure of the network device in the foregoing method embodiment, for example, to generate the foregoing indication information.
  • the BBU 920 may be composed of one or more single boards, and multiple single boards may jointly support a wireless access network (such as an LTE network) of a single access standard, or can support different access standards. Wireless access network (such as LTE network, 5G network or other networks).
  • the BBU 920 further includes a memory 921 and a processor 922.
  • the memory 921 is used to store necessary instructions and data.
  • the processor 922 is configured to control the base station to perform necessary actions, for example, to control the base station to execute the operation procedure of the network device in the foregoing method embodiment.
  • the memory 921 and the processor 922 may serve one or more boards. In other words, the memory and the processor can be set separately on each board. It can also be that multiple boards share the same memory and processor. In addition, necessary circuits can be provided on each board.
  • the embodiment of the present application also provides a communication device, and the communication device may be a terminal device or a circuit.
  • the communication device may be used to perform the actions performed by the terminal device in the foregoing method embodiments.
  • FIG. 10 shows a simplified schematic diagram of the structure of the terminal device. It is easy to understand and easy to illustrate.
  • the terminal device uses a mobile phone as an example.
  • the terminal equipment includes a processor, a memory, a radio frequency circuit, an antenna, and an input and output device.
  • the processor is mainly used to process the communication protocol and communication data, control the vehicle-mounted unit, execute the software program, and process the data of the software program.
  • the memory is mainly used to store software programs and data.
  • the radio frequency circuit is mainly used for the conversion of baseband signal and radio frequency signal and the processing of radio frequency signal.
  • the antenna is mainly used to send and receive radio frequency signals in the form of electromagnetic waves.
  • Input and output devices such as touch screens, display screens, keyboards, etc., are mainly used to receive data input by users and output data to users. It should be noted that some types of equipment may not have input and output devices.
  • the processor When data needs to be sent, the processor performs baseband processing on the data to be sent, and then 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 one memory and processor are shown in FIG. 10. In an actual device product, there may be one or more processors and one or more memories.
  • the memory may also be referred to as a storage medium or storage device.
  • the memory may be set independently of the processor, or may be integrated with the processor, which is not limited in the embodiment of the present application.
  • the antenna and radio frequency circuit with the transceiver function can be regarded as the transceiver unit of the device, and the processor with the processing function can be regarded as the processing unit of the device.
  • the device includes a transceiver unit 1010 and a processing unit 1020.
  • the transceiving unit 1010 may also be referred to as a transceiver, a transceiver, a transceiving device, and so on.
  • the processing unit 1020 may also be called a processor, a processing board, a processing module, a processing device, and so on.
  • the device for implementing the receiving function in the transceiver unit 1010 can be regarded as the receiving unit, and the device for implementing the sending function in the transceiver unit 1010 as the sending unit, that is, the transceiver unit 1010 includes a receiving unit and a sending unit.
  • the transceiving unit 1010 may also be called a transceiver, a transceiver, or a transceiving circuit or the like.
  • the receiving unit may sometimes be called a receiver, a receiver, or a receiving circuit.
  • the transmitting unit may sometimes be called a transmitter, a transmitter, or a transmitting circuit.
  • transceiving unit 1010 is used to perform the sending and receiving operations on the terminal device side in the foregoing method embodiment, and the processing unit 1020 is used to perform other operations on the terminal device in the foregoing method embodiment except for the transceiving operation.
  • the transceiver unit 1010 may be used to perform S301 in the embodiment shown in FIG. 3 and/or other processes used to support the technology described herein.
  • the transceiver unit 1010 may be used to perform S401, S405, S406 in the embodiment shown in FIG. 4 and/or other processes used to support the technology described herein.
  • the transceiver unit 1010 may be used to execute S501, S502, S503, S504, S505 in the embodiment shown in FIG. 5 and/or other processes for supporting the technology described herein.
  • the device may include a transceiver unit and a processing unit.
  • the transceiving unit may be an input/output circuit and/or a communication interface;
  • the processing unit is an integrated processor or a microprocessor or an integrated circuit.
  • the device can perform functions similar to the processing module 720 in FIG. 7.
  • the device includes a processor 1110, a data sending processor 1120, and a data receiving processor 1130.
  • the processing module 720 in the foregoing embodiment may be the processor 1110 in FIG. 11, and completes corresponding functions.
  • the processing module 720 in the foregoing embodiment may be the sending data processor 1120 and/or the receiving data processor 1130 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 communication device 1200 includes modules such as a modulation subsystem, a central processing subsystem, and a peripheral subsystem.
  • the communication device in this embodiment can be used as the modulation subsystem therein.
  • the modulation subsystem may include a processor 1203 and an interface 1204.
  • the processor 1203 completes the function of the aforementioned processing module 720
  • the interface 1204 completes the function of the aforementioned transceiver module 710.
  • the modulation subsystem includes a memory 1206, a processor 1203, and a program stored in the memory 1206 and running on the processor.
  • the terminal device in the above method embodiment is implemented. method.
  • the memory 1206 can be non-volatile or volatile, and its location can be located inside the modulation subsystem or in the processing device 1200, as long as the memory 1206 can be connected to the The processor 1203 is sufficient.
  • the embodiment of the present application also provides a communication system.
  • the communication system includes the aforementioned network device and terminal device, or may also include more network devices and multiple terminal devices.
  • the network devices are respectively used to implement the functions of the relevant network parts of FIG. 5 and FIG. 6 described above.
  • the terminal device is used to implement the functions of the above-mentioned terminals related to FIG. 5 and FIG. 6. For details, please refer to the relevant descriptions in the above method embodiments, which will not be repeated here.
  • the embodiment of the present application also provides a computer-readable storage medium, including instructions, which when run on a computer, cause the computer to execute the method performed by the network device in FIG. 5 and FIG. 6; or when it runs on a computer, Make the computer execute the method executed by the terminal device in FIG. 5 and FIG. 6.
  • the embodiment of the present application also provides a computer program product, including instructions, when it runs on a computer, causes the computer to execute the method executed by the network device in FIG. 5 and FIG. 6; or when it runs on a computer, causes the computer Perform the method performed by the terminal device in FIG. 5 and FIG. 6.
  • the embodiment of the present application provides a chip system, which includes a processor and may also include a memory, which is used to implement the functions of the network device or terminal device in the foregoing method; or is used to implement the function of the network device and terminal device in the foregoing method.
  • the chip system can be composed of chips, or it can include chips and other discrete devices.
  • At least one means one or more
  • plural means two or more.
  • And/or describes the association relationship of the associated objects, indicating 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, and B exists alone, where A, B can be singular or plural.
  • the character “/” generally indicates that the associated objects before and after are in an “or” relationship.
  • the following at least one item (a)” or similar expressions refers to any combination of these items, including any combination of a single item (a) or a plurality of items (a).
  • At least one of a, b, or c can mean: a, b, c, a-b, a-c, b-c or a-b-c, where a, b, and c can be single or multiple.
  • first and second mentioned in the embodiments of this application are used to distinguish multiple objects, and are not used to limit the order, timing, priority, or order of multiple objects. Importance.
  • first configuration information and the second configuration information are only for distinguishing different messages, but do not indicate the difference in priority, sending order, or importance of the two messages.
  • processors mentioned in the embodiments of this application may be a CPU, or other general-purpose processors, digital signal processors (digital signal processors, DSP), application specific integrated circuits (ASICs), ready-made Field programmable gate array (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc.
  • the general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like.
  • the memory mentioned in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory can be read-only memory (ROM), programmable read-only memory (programmable ROM, PROM), erasable programmable read-only memory (erasable PROM, EPROM), and 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
  • dynamic RAM dynamic RAM
  • DRAM dynamic random access memory
  • synchronous dynamic random access memory synchronous DRAM, SDRAM
  • double data rate synchronous dynamic random access memory double data rate SDRAM, DDR SDRAM
  • enhanced synchronous dynamic random access memory enhanced SDRAM, ESDRAM
  • synchronous connection dynamic random access memory serial DRAM, SLDRAM
  • direct rambus RAM direct rambus RAM, DR RAM
  • the processor is a general-purpose processor, DSP, ASIC, FPGA or other programmable logic device, discrete gate or transistor logic device, or discrete hardware component
  • the memory storage module
  • the size of the sequence number of the above-mentioned processes does not mean the order of execution, and the execution order of each process should be determined by its function and internal logic, and should not correspond to the embodiments of the present application.
  • the implementation process constitutes any limitation.
  • the disclosed system, device, and method may be implemented in other ways.
  • the device embodiments described above are merely illustrative, for example, the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components may be combined or It can be integrated into another system, or some features can be ignored or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.
  • 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.
  • the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium.
  • the technical solution of 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 described in each embodiment of the present application.
  • the aforementioned storage media include: U disk, mobile hard disk, read-only memory (read-only memory, ROM), random access memory (random access memory, RAM), magnetic disk or optical disk and other media that can store program code .

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

Abstract

La présente demande divulgue un procédé et un dispositif de communication, le procédé pouvant être appliqué à l'Internet des véhicules, tel que les véhicules à tout (V2X), les véhicules d'évolution à long terme (LTE-V), les véhicules à véhicules (V2V) et analogues, ou peuvent être utilisés dans les domaines de la conduite intelligente, des véhicules connectés intelligents et analogues, le procédé fait appel aux étapes suivantes : un premier dispositif terminal détecte un paramètre de transmission utilisé pour un second dispositif terminal afin d'envoyer des informations de liaison latérale sur une première ressource, le paramètre de transmission comprenant un mode de transmission ou un type de perte de trajet, le mode de transmission comprenant la diffusion, la diffusion individuelle et la multidiffusion, et le mode de perte de trajet comprenant une perte de trajet de liaison latérale et une perte de trajet de liaison descendante ; le premier dispositif terminal détermine si la première ressource est une ressource candidate selon un seuil de détection d'énergie correspondant au paramètre de transmission, la ressource candidate étant une ressource candidate utilisée pour le premier dispositif terminal afin de transmettre des informations de liaison latérale. Le procédé peut réduire les conflits d'interférence et de ressources entre des ressources de multiples dispositifs terminaux pour la transmission de données.
PCT/CN2019/116863 2019-11-08 2019-11-08 Procédé et dispositif de communication WO2021088063A1 (fr)

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