WO2022151431A1 - Procédé et appareil de communication - Google Patents

Procédé et appareil de communication Download PDF

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Publication number
WO2022151431A1
WO2022151431A1 PCT/CN2021/072316 CN2021072316W WO2022151431A1 WO 2022151431 A1 WO2022151431 A1 WO 2022151431A1 CN 2021072316 W CN2021072316 W CN 2021072316W WO 2022151431 A1 WO2022151431 A1 WO 2022151431A1
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WIPO (PCT)
Prior art keywords
priority
service
value
transmitted
information
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PCT/CN2021/072316
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English (en)
Chinese (zh)
Inventor
黎超
杨帆
张天虹
黄海宁
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华为技术有限公司
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Priority to PCT/CN2021/072316 priority Critical patent/WO2022151431A1/fr
Publication of WO2022151431A1 publication Critical patent/WO2022151431A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/56—Allocation or scheduling criteria for wireless resources based on priority criteria
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present application relates to the field of communication, and in particular, to a communication method and device.
  • vehicles or in-vehicle terminals can communicate through vehicle-to-vehicle (V2V) communication, vehicle-to-infrastructure (V2I), vehicle-to-pedestrian communication Vehicle to pedestrian (V2P) or vehicle to network (V2N) and other communication methods to obtain road condition information or receive services in time, these communication methods can be collectively referred to as V2X communication.
  • V2V vehicle-to-vehicle
  • V2I vehicle-to-infrastructure
  • V2P vehicle-to-pedestrian communication
  • V2P vehicle to pedestrian
  • V2N vehicle to network
  • V2X communication link of V2X is called sidelink (SL), which can provide higher communication rate, shorter communication delay, and more reliable communication quality for vehicles or vehicle-mounted terminals.
  • SL sidelink
  • a fully sensing device such as user equipment (UE) defined in R16
  • UE user equipment
  • R16 user equipment
  • the above sensing operation needs to consume a lot of power, so that the power consumption of the terminal device remains high.
  • devices with limited sensing capabilities are introduced, such as partial sensing devices or non-sensing devices defined in R17.
  • some sensing devices only select resources according to the sensing results of some resources, while non-sensing devices do not perform sensing operations, but randomly select resources. That is to say, after the introduction of a device with limited perception capability, resource conflicts and interference problems may occur, which in turn lead to a substantial decrease in the performance of the entire system.
  • the embodiments of the present application provide a communication method and apparatus, which can solve the technical problem that the power saving requirement and data transmission performance of a device with limited sensing capability cannot be taken into account, and can ensure the communication efficiency and reliability of the device with limited sensing capability.
  • a communication method includes: the first device determines a value of a first priority of a service to be transmitted and a priority adjustment parameter.
  • the value of the second priority is determined according to the value of the first priority and the priority adjustment parameter.
  • Send priority indication information includes the value of the second priority.
  • the first device may notify a third device, such as a fully aware device, that the priority of the service to be transmitted has been adjusted to a higher priority, such as from the first The priority is increased to the second priority, so that the third device can avoid resources already occupied by the first device.
  • a third device such as a fully aware device
  • the first device may notify a third device, such as a device with limited sensing capability, that the priority of the service to be transmitted has been adjusted to a lower priority, such as from the first The priority is lowered to the second priority to avoid resources already occupied by the third device.
  • a third device such as a device with limited sensing capability
  • the service to be transmitted includes at least one medium access control (medium access control, MAC) control element (control element, CE) and/or at least one logical channel
  • MAC medium access control
  • CE control element
  • each MAC CE corresponds to a priority
  • each A logical channel corresponds to a priority
  • MAC CE and the first priority is the highest priority in at least one MAC CE and/or at least one logical channel.
  • the first device uses the highest priority in at least one MAC CE and/or at least one logical channel as the first priority of the service TB to be transmitted,
  • the first priority of the service TB to be transmitted can be determined quickly and uniquely, so that the physical layer can select the TB resource based on this.
  • the value of the priority is negatively related to the level of the priority, the second priority is higher than the first priority, and the value of the second priority is the value of the first priority and the priority. Adjust the difference of parameters.
  • the value of the priority is positively related to the level of the priority, the second priority is higher than the first priority, and the value of the second priority is the sum of the value of the first priority and the priority adjustment parameter.
  • the value of the priority is negatively related to the level of the priority, the second priority is lower than the first priority, and the value of the second priority is the sum of the value of the first priority and the priority adjustment parameter.
  • the value of the priority is positively related to the level of the priority, and when the second priority is lower than the first priority, the value of the second priority is the difference between the value of the first priority and the priority adjustment parameter.
  • the first device can choose a mode suitable for its own business needs between two modes of positive correlation or negative correlation to realize priority adjustment.
  • the priority adjustment parameter is configured by signaling, predefined by a protocol, or determined by the first device.
  • multiple configuration modes of the priority adjustment parameters are provided.
  • an appropriate mode can be selected from among the multiple configuration modes to configure the priority adjustment parameters according to actual requirements.
  • the priority adjustment parameter is determined by the channel quality information and/or the first priority.
  • the priority adjustment parameters are determined by channel quality information.
  • the priority adjustment parameter is determined by the channel quality information, which can improve the chance of the first device to successfully preempt resources when the channel is sufficiently idle. .
  • the priority adjustment parameter is determined by the first priority.
  • the higher the first priority the more important the service to be transmitted is, and the priority adjustment parameter is determined by the channel quality information, which can provide more protection for the important service.
  • the priority adjustment parameter is configured to be associated with the channel quality information and/or the first priority information.
  • the first device can quickly determine the priority adjustment parameter based on the configuration.
  • the second priority when the second priority is higher than the first priority, the second priority is determined according to the first priority and the priority adjustment parameter, including: if the target condition is satisfied, then according to the first priority and The priority adjustment parameter determines the second priority.
  • the target conditions include one or more of the following:
  • the priority adjustment function of the first device has been activated.
  • the priority adjustment function by deactivating or activating the priority adjustment function, it is possible to switch between the original resource selection policy of the first device and the adjusted resource selection policy, so as to be compatible with the original resource selection policy of the communication system.
  • the signal quality information detected by the first device on the resource pool is lower than the second threshold.
  • the resource occupancy rate of the resource pool corresponding to the first device is less than or equal to the occupancy rate threshold.
  • the service period of the service to be transmitted is greater than or equal to the period threshold.
  • the traffic volume of the first device is less than or equal to the quantity threshold. That is to say, when the traffic volume on the resource pool is small, there are enough idle resources to choose from, so as to avoid the resources occupied by the device with limited sensing capability, thereby ensuring the reliability and efficiency of communication between the two parties.
  • the first device operates in a power saving mode. That is, the priority adjustment function is enabled for the terminal device that needs to save power, so that another terminal avoids the resources occupied by the terminal that needs to save power, so as to ensure the communication efficiency and reliability of the terminal that needs to save power.
  • the first priority is determined as the second priority.
  • the effect reference may be made to the effect satisfying the target condition, which will not be repeated here.
  • the first threshold is determined by the resource selection mode and/or transmission mode of the first device.
  • the second threshold is determined by the resource selection method and/or the transmission mode.
  • the resource selection method includes any one of the following: a random resource selection method, a partially perceived resource selection method, and a fully perceived resource selection method.
  • the transmission mode includes any one of the following: a mode based on an intelligent transportation system ITS service, a mode based on a public safety service, and a mode based on a commercial service. In this way, more protection can be provided for the first device that has important services or needs to save power.
  • the priority indication information further includes a priority adjustment parameter.
  • the first device can inform the third device through the priority adjustment parameter whether the value of the second priority in the priority indication information is adjusted, so that the third device can prioritize its own service and the service to be transmitted by the first device. When the levels are the same, determine whether to evade.
  • the priority indication information is the sideline control information SCI sent by the first device, and the value of the second priority and/or the priority adjustment parameter are carried in the sideline control information SCI.
  • the first device sends the value of the second priority through the SCI, it can be compatible with the original communication standard, and there is no need to redefine the priority indication information, so as to realize the adjustment of the priority.
  • the communication method further includes: determining the transmission resource of the service to be transmitted according to the value of the second priority. In this way, the transmission resource determined by the first device based on the lowered priority can avoid the transmission resource of the third device, thereby ensuring the communication efficiency and reliability of the third device.
  • the first device determines better or more transmission resources based on the increased priority, thereby improving communication efficiency and reliability of the first device.
  • a communication method includes: the second device receives priority indication information of a service to be transmitted.
  • the priority indication information includes the value of the second priority.
  • the value of the first priority is determined according to the value of the second priority and the priority adjustment parameter. Whether to demodulate the service to be transmitted is determined according to the value of the first priority; or, whether to send feedback information of the service to be transmitted.
  • the second device determines whether to demodulate the to-be-transmitted service based on the first priority of the to-be-transmitted service sent by the first device, that is, the standard priority of the to-be-transmitted service; or, whether The feedback information of the service to be transmitted is sent, so as to avoid that the adjusted second priority of the first device affects the demodulation or feedback of other services by the second device, and interferes with the data transmission performance of other services.
  • the value of the priority is negatively related to the level of the priority, the first priority is higher than the second priority, and the value of the first priority is the value of the first priority and the priority. Adjust the difference of parameters.
  • the value of the priority is negatively correlated with the level of the priority, the first priority is lower than the second priority, and the value of the first priority is the sum of the value of the second priority and the priority adjustment parameter.
  • the value of the priority is positively related to the level of the priority, the first priority is higher than the second priority, and the value of the first priority is the sum of the value of the second priority and the priority adjustment parameter.
  • the value of the priority is positively related to the level of the priority, and when the first priority is lower than the second priority, the value of the first priority is the difference between the value of the second priority and the priority adjustment parameter.
  • the second device can choose a mode suitable for its own business needs between two modes of positive correlation or negative correlation to implement priority adjustment.
  • a communication method includes: the first device determines the service type of the service to be transmitted.
  • the characteristic information is determined according to the business type.
  • the first control information indicates feature information.
  • different service types correspond to different characteristic information for determining the transmission resource of the service to be transmitted.
  • the physical layer can determine the transmission resources that meet the service requirements of the service to be transmitted based on the characteristic information indicated by the first control information, so as to ensure its communication efficiency and reliability.
  • the characteristic information is determined according to the business type, including: obtaining a priority association relationship.
  • the priority association relationship includes the corresponding relationship between the priorities of each service and each channel under different service types. Based on the relationship between the service type and the priority, the priority of the channel corresponding to the service to be transmitted is determined.
  • the priority of the channel corresponding to the service to be transmitted is characteristic information.
  • each service under different service types is corresponding to different channel priorities, so that different priorities can be distinguished for different services. In this way, when the corresponding service needs to be sent, such as the service to be transmitted, by sending the first control information to indicate the corresponding feature information-priority in the physical layer, it is possible to determine the transmission suitable for its service requirements for different services resources to ensure the required communication capabilities.
  • the feature information includes: the number of bits of the first indication information included in the first control information, and/or the value of the second indication information included in the first control information.
  • different service types correspond to different bit numbers of the first indication information.
  • Different service types correspond to different values of the second indication information.
  • the channels include logical channels and/or MAC CEs.
  • two channels with configurable priority are provided.
  • an appropriate channel configuration priority can be selected according to actual needs, and an association relationship can be established with each service under different service types.
  • the priority association is predefined by a signaling configuration or a protocol.
  • multiple configuration modes of the priority association relationship are provided.
  • an appropriate mode can be selected from among the multiple configuration modes to configure the priority association relationship according to actual requirements.
  • the second indication information includes one or more of the following: extended bit information of priority field information, a cyclic redundancy check (cyclic redundancy check, CRC) scrambling sequence, and time-frequency resources in occupied time slots location, or reserved bit information.
  • CRC cyclic redundancy check
  • the first device can select a suitable type of information to indicate feature information from a variety of second indication information according to its own needs.
  • the second indication information includes reserved bit information
  • different service types correspond to different values of the second indication information, including: the first service type corresponds to the first value of the reserved bit information.
  • the second service type corresponds to the second value of the reserved bit information.
  • the second indication information includes the extended bit information of the priority field information
  • different service types correspond to different values of the second indication information, including: the first service type corresponds to the first value of the extended bit information.
  • the second service type corresponds to the second value of the extended bit information.
  • the first indication information includes priority field information.
  • the service type includes public safety service, ITS service, or commercial service.
  • the number of bits of the priority field information corresponding to the public safety service and/or the commercial service includes at least 4 bits, and the number of bits of the priority field information corresponding to the ITS service includes 3 bits.
  • the service to be transmitted includes the first service and the second service.
  • the priority of the first service is higher than the priority of the second service.
  • the first service is a service with a priority higher than the first priority threshold in the first service set, or the first service is all services in the first service set.
  • the second service is a service whose priority in the second service set is lower than the second priority threshold, or the second service is all the services in the second service set.
  • the first service set is a set of services under the first service type
  • the second service set is a set of services under the second service type.
  • the higher-priority services or all services under the first service type can be prioritized over lower-priority services under the second service type
  • the service or all services are transmitted, that is, the first service is transmitted prior to the second service, so as to avoid resource conflict between the first service and the second service.
  • the first service is a public safety service
  • the second service is an ITS service or a commercial service.
  • all or part of the higher priority public safety service can be preferentially transmitted, and resource conflict can be avoided.
  • the first service is a commercial service
  • the second service is an ITS service.
  • all or part of higher-priority commercial services can be preferentially transmitted, thereby avoiding all or part of higher-priority commercial services and all or part of lower-priority commercial services.
  • Resource conflicts arise between the ITS services.
  • the first service is an ITS service
  • the second service is a commercial service.
  • all or part of higher-priority ITS services can be preferentially transmitted, and all or part of higher-priority ITS services and all or part of lower-priority ITS services can be avoided. resource conflicts between commercial services.
  • the first service is a sideline communication SL service
  • the second service is an uplink and downlink communication service.
  • all or part of the higher priority SL service can be preferentially transmitted, thereby avoiding all or part of the higher priority SL service and all or part of the lower priority SL service.
  • a resource conflict occurs between the upstream and downstream communication services of the level.
  • services of different service types can be configured on the same or partially the same sending resource set.
  • a communication device in a fourth aspect, includes: a processing module and a transceiver module.
  • the processing module is configured to determine the value of the first priority of the service to be transmitted and the priority adjustment parameter.
  • the processing module is further configured to determine the value of the second priority according to the value of the first priority and the priority adjustment parameter.
  • the transceiver module is used to send priority indication information.
  • the priority indication information includes the value of the second priority.
  • the service to be transmitted includes at least one MAC CE and/or at least one logical channel, each MAC CE corresponds to a priority, each logical channel corresponds to a priority, and the first priority of the MAC CE is at least one MAC CE and /or the highest priority in at least one logical channel.
  • the value of the priority is negatively related to the level of the priority, the second priority is higher than the first priority, and the value of the second priority is the value of the first priority and the priority. Adjust the difference of parameters.
  • the value of the priority is positively related to the level of the priority, the second priority is higher than the first priority, and the value of the second priority is the sum of the value of the first priority and the priority adjustment parameter.
  • the value of the priority is negatively related to the level of the priority, the second priority is lower than the first priority, and the value of the second priority is the sum of the value of the first priority and the priority adjustment parameter.
  • the value of the priority is positively related to the level of the priority, and when the second priority is lower than the first priority, the value of the second priority is the difference between the value of the first priority and the priority adjustment parameter.
  • the priority adjustment parameter is determined by signaling configuration, protocol predefined, or the communication device itself. In this way, multiple configuration modes of the priority adjustment parameters are provided, and during the implementation process, an appropriate mode can be selected from among the multiple configuration modes to configure the priority adjustment parameters according to actual requirements.
  • the priority adjustment parameter is determined by the channel quality information and/or the first priority.
  • the priority adjustment parameters are determined by channel quality information.
  • the priority adjustment parameter is determined by the first priority.
  • the priority adjustment parameter is configured to be associated with the channel quality information and/or the first priority.
  • the processing module when the second priority is higher than the first priority, the processing module is further configured to determine the second priority according to the first priority and the priority adjustment parameter if the target condition is satisfied.
  • the target conditions include one or more of the following:
  • the priority adjustment function of the communication device has been activated.
  • the signal quality information detected by the communication device on the resource pool is lower than the second threshold.
  • the resource occupancy rate of the resource pool corresponding to the communication device is less than or equal to the occupancy rate threshold.
  • the service period of the service to be transmitted is greater than or equal to the period threshold.
  • the traffic volume of the communication device is less than or equal to the quantity threshold.
  • the communication device operates in a power saving mode.
  • the first priority is determined as the second priority.
  • the first threshold is determined by a resource selection manner and/or a transmission mode of the communication apparatus.
  • the second threshold is determined by the resource selection method and/or the transmission mode.
  • the resource selection method includes any one of the following: a random resource selection method, a partially perceived resource selection method, and a fully perceived resource selection method.
  • the transmission mode includes any one of the following: a mode based on ITS services, a mode based on public safety services, and a mode based on commercial services.
  • the priority indication information further includes a priority adjustment parameter.
  • the priority indication information is the sideline control information SCI sent by the communication device, and the value of the second priority and/or the priority adjustment parameter are carried in the sideline control information SCI.
  • the processing module is further configured to determine the transmission resource of the service to be transmitted according to the value of the second priority.
  • the transceiver module may include a receiving module and a sending module. Wherein, the transceiver module is used to implement the sending function and the receiving function of the communication device of the fourth aspect.
  • the communication apparatus of the fourth aspect may further include a storage module, where the storage module stores programs or instructions.
  • the processing module executes the program or the instruction, the communication apparatus can execute the communication method of the first aspect.
  • the communication device of the fourth aspect may be the first device in the first aspect, or may be a chip (system) or other components or components that can be provided in the first device, or may include the first device.
  • a device of a device which is not limited in this application.
  • a communication device in a fifth aspect, includes: a processing module and a transceiver module.
  • the transceiver module is used for receiving priority indication information of the service to be transmitted.
  • the priority indication information includes the value of the second priority.
  • the processing module is configured to determine the value of the first priority according to the value of the second priority and the priority adjustment parameter.
  • the processing module is further configured to determine, according to the value of the first priority, whether to demodulate the service to be transmitted; or, whether to send feedback information of the service to be transmitted.
  • the value of the priority is negatively related to the level of the priority, the first priority is higher than the second priority, and the value of the first priority is the value of the first priority and the priority. Adjust the difference of parameters.
  • the value of the priority is negatively correlated with the level of the priority, the first priority is lower than the second priority, and the value of the first priority is the sum of the value of the second priority and the priority adjustment parameter.
  • the value of the priority is positively related to the level of the priority, the first priority is higher than the second priority, and the value of the first priority is the sum of the value of the second priority and the priority adjustment parameter.
  • the value of the priority is positively related to the level of the priority, and when the first priority is lower than the second priority, the value of the first priority is the difference between the value of the second priority and the priority adjustment parameter.
  • the transceiver module may include a receiving module and a sending module. Wherein, the transceiver module is used to implement the sending function and the receiving function of the communication device of the fifth aspect.
  • the communication device of the fifth aspect may further include a storage module, where the storage module stores programs or instructions.
  • the processing module executes the program or the instruction
  • the communication apparatus can execute the communication method of the second aspect.
  • the communication device of the fifth aspect may be the second device in the second aspect, or may be a chip (system) or other components or components that can be provided in the second device, or may include the first device.
  • the device of the second device is not limited in this application.
  • a communication device in a sixth aspect, includes: a processing module and a transceiver module.
  • the processing module is used to determine the service type of the service to be transmitted.
  • the processing module is further configured to determine the characteristic information according to the business type.
  • the transceiver module is used for sending the first control information.
  • the first control information indicates feature information.
  • the processing module is also used to obtain the priority association relationship.
  • the priority association relationship includes the corresponding relationship between the priorities of each service and each channel under different service types. Based on the relationship between the service type and the priority, the priority of the channel corresponding to the service to be transmitted is determined. The priority of the channel corresponding to the service to be transmitted is characteristic information.
  • the feature information includes: the number of bits of the first indication information included in the first control information, and/or the value of the second indication information included in the first control information.
  • different service types correspond to different bit numbers of the first indication information.
  • Different service types correspond to different values of the second indication information.
  • the channels include logical channels and/or MAC CEs.
  • two channels with configurable priority are provided.
  • an appropriate channel configuration priority can be selected according to actual needs, and an association relationship can be established with each service under different service types.
  • the priority association is predefined by a signaling configuration or a protocol.
  • multiple configuration modes of the priority association relationship are provided.
  • an appropriate mode can be selected from among the multiple configuration modes to configure the priority association relationship according to actual requirements.
  • the second indication information includes one or more of the following: extended bit information of the priority field information, a CRC scrambling sequence, a time-frequency resource position in an occupied time slot, or reserved bit information.
  • the second indication information includes reserved bit information
  • different service types correspond to different values of the second indication information, including: the first service type corresponds to the first value of the reserved bit information.
  • the second service type corresponds to the second value of the reserved bit information.
  • the second indication information includes the extended bit information of the priority field information
  • different service types correspond to different values of the second indication information, including: the first service type corresponds to the first value of the extended bit information.
  • the second service type corresponds to the second value of the extended bit information.
  • the first indication information includes priority field information.
  • the service type includes public safety service, ITS service, or commercial service.
  • the number of bits of the priority field information corresponding to the public safety service and/or the commercial service includes at least 4 bits, and the number of bits of the priority field information corresponding to the ITS service includes 3 bits.
  • the service to be transmitted includes the first service and the second service.
  • the priority of the first service is higher than the priority of the second service.
  • the first service is a service with a priority higher than the first priority threshold in the first service set, or the first service is all services in the first service set.
  • the second service is a service whose priority in the second service set is lower than the second priority threshold, or the second service is all the services in the second service set.
  • the first service set is a set of services under the first service type
  • the second service set is a set of services under the second service type.
  • the first service is a public safety service
  • the second service is an ITS service or a commercial service.
  • the first service is a commercial service
  • the second service is an ITS service
  • the first service is an ITS service
  • the second service is a commercial service.
  • the first service is a sideline communication SL service
  • the second service is an uplink and downlink communication service.
  • services of different service types can be configured on the same or partially the same sending resource set.
  • the transceiver module may include a receiving module and a sending module. Wherein, the transceiver module is used to implement the sending function and the receiving function of the communication device of the sixth aspect.
  • the communication apparatus of the sixth aspect may further include a storage module, where the storage module stores programs or instructions.
  • the processing module executes the program or the instruction
  • the communication device can execute the communication method of the third aspect.
  • the communication device of the sixth aspect may be the first device in the third aspect, or may be a chip (system) or other components or components that can be provided in the first device, or may include the first device in the first device.
  • a device of a device which is not limited in this application.
  • a communication device configured to perform the communication method of any one of the first aspect, the second aspect, or the third aspect.
  • the communication apparatus of the seventh aspect includes corresponding modules, units, or means for implementing the communication method of any one of the first, second, or third aspects, and the modules, units, or means may be Implemented by hardware, implemented by software, or implemented by hardware executing corresponding software.
  • the hardware or software includes one or more modules or units for performing the functions involved in the above communication method.
  • a communication device in an eighth aspect, includes: a processor configured to execute the communication method of any one of the first aspect, the second aspect, or the third aspect.
  • the communication device of the eighth aspect may further include a transceiver.
  • the transceiver may be a transceiver circuit or an interface circuit.
  • the transceiver can be used for the communication device of the eighth aspect to communicate with other communication devices.
  • the communication apparatus of the eighth aspect may further include a memory.
  • the memory can be integrated with the processor, or it can be provided separately.
  • the memory may be used to store computer programs and/or data involved in the communication method of any one of the first aspect, the second aspect, or the third aspect.
  • the communication device of the eighth aspect may be the first device of the first aspect or the third aspect, or may be a chip (system) or other components or components provided in the first device, or may include the first device.
  • a device's device It can also be the second device in the second aspect, or a chip (system) or other components or components that can be provided in the second device, or an apparatus including the second device.
  • a communication device in a ninth aspect, includes a processor coupled to a memory for executing a computer program stored in the memory to cause the communication device to perform the communication of any of the first, second, or third aspects method.
  • the communication device of the ninth aspect may further include a transceiver.
  • the transceiver may be a transceiver circuit or an interface circuit.
  • the transceiver may be used for the communication device of the ninth aspect to communicate with other communication devices.
  • the communication device of the ninth aspect may be the first device of the first aspect or the third aspect, or may be a chip (system) or other components or components provided in the first device, or may include the first device.
  • a device's device It can also be the second device in the second aspect, or a chip (system) or other components or components that can be provided in the second device, or an apparatus including the second device.
  • a tenth aspect provides a processor.
  • the processor is configured to execute the communication method of any one of the first aspect, the second aspect, or the third aspect.
  • a communication system in an eleventh aspect, includes the first device and the third device of the above-mentioned first aspect, and the second device of the above-mentioned second aspect.
  • the communication system may further include network equipment.
  • a twelfth aspect provides a computer-readable storage medium, comprising: a computer program or instruction; when the computer program or instruction is run on a computer, the computer is made to execute any of the first aspect, the second aspect, or the third aspect.
  • the communication method On the one hand, the communication method.
  • a thirteenth aspect provides a computer program product comprising a computer program or instructions that, when run on a computer, cause the computer to perform any of the first, second, or third aspects communication method.
  • FIG. 1 is a schematic diagram of resource selection when a device 1 and a device 2 communicate with each other according to an embodiment of the present application;
  • FIG. 2 is a schematic diagram of the architecture of a communication system provided by an embodiment of the present application.
  • FIG. 3 is a schematic diagram of resource selection when a first device and a third device communicate with each other according to an embodiment of the present application
  • FIG. 4 is a schematic flowchart 1 of a communication method provided by an embodiment of the present application.
  • FIG. 5 is a second schematic flowchart of a communication method provided by an embodiment of the present application.
  • FIG. 6 is a third schematic flowchart of a communication device provided by an embodiment of the present application.
  • FIG. 7 is a schematic structural diagram 1 of a communication device provided by an embodiment of the present application.
  • FIG. 8 is a second schematic structural diagram of a communication apparatus according to an embodiment of the present application.
  • S2D The communication link between the terminal device and the terminal device through the device to device (device to device, D2D) mode for direct communication.
  • the D2D mode can be applied to V2X communication.
  • X can generally refer to any device with wireless reception and transmission capabilities, such as a mobile phone, a vehicle terminal, and the like. It should be understood that the embodiments of the present application are mainly applied to a V2X communication scenario, but may also be applied to other D2D communication scenarios, which are not limited in the embodiments of the present application.
  • SCI Sidelink control information
  • MCS modulation and coding scheme
  • PSCH physical sidelink control channel
  • Random resource selection is a resource selection method in mode 2 (mode 2) defined by the 3GPP (3rd generation partnership project) protocol for NR-V2X.
  • mode 2 mode 2
  • the terminal device selects resources in this way, it does not monitor any resources in the resource pool, and directly selects a resource in the resource pool as a transmission resource at random.
  • a terminal device that selects resources in this manner is hereinafter referred to as a non-sensing device.
  • a non-sensing device may be a device that has sensing capability but does not perform sensing operations under certain conditions.
  • the non-sensing device may be a non-sensing device defined in R17, such as a mobile phone, a watch, a wristband, and the like.
  • Partial sensing is another resource selection method in Mode 2 defined by 3GPP protocol for NR-V2X.
  • the terminal device selects resources in this way, it only monitors the occupancy of a part of the resources in the resource pool, and does not monitor other parts of the resources, and then selects transmission from the monitored unoccupied resources and/or the unmonitored resources. resource.
  • a terminal device that selects resources in this way is hereinafter referred to as a partial sensing device.
  • a partial sensing device may be a device that has full sensing capability but performs partial sensing operations under certain conditions.
  • the partial sensing device may be the partial sensing device defined in R17.
  • non-sensing devices and partial sensing devices are collectively referred to as devices with limited sensing capabilities.
  • Full sensing is another resource selection method under Mode 2 defined by the 3GPP protocol for NR-V2X.
  • the terminal device selects resources in this way, it monitors the occupancy status of all resources in the resource pool, and then selects transmission resources from the monitored unoccupied resources.
  • a terminal device that selects resources in this way is hereinafter referred to as a fully aware device.
  • the fully aware device may be the user equipment defined in R16.
  • a fully aware device may be a fully aware device in R17.
  • Mode 1 is that a network device (eg, a base station) allocates transmission resources to the terminal device, and the terminal device sends data on the sidelink according to the allocated resources.
  • Mode 2 is that the terminal device autonomously selects transmission resources, and the terminal device transmits data on the sidelink according to the autonomously selected resources.
  • ITS Intelligent traffic systems
  • ITS which effectively and comprehensively apply advanced information technology, data communication technology, sensor technology, electronic control technology and computer technology to the entire transportation management system, thereby establishing a large-scale transportation management system.
  • a real-time, accurate, and efficient integrated transportation and management system that works in all directions.
  • Priority refers to the priority of the business.
  • the higher the priority of the service means that the data in the data packet corresponding to the service to be transmitted is more important.
  • a higher service priority indicates that the service has higher requirements on at least one of the following quality of service (QoS) parameters: service reliability requirements, service transmission delay requirements, service transmission rate or Transmission throughput requirements.
  • QoS quality of service
  • the priority of the service may be negatively correlated with the value of the priority indicated in the SCI, or may be positively correlated. Taking negative correlation as an example, the smaller the value of the priority indicated in the SCI, the higher the priority of the service, indicating that the service is more important. Conversely, the larger the value of the priority, the lower the priority of the business, and vice versa, the lower the importance of the business.
  • the priority of the service is indicated by the value of the priority field in the SCI.
  • the priority in the SCI may be indicated by 3 bits, and the value may correspond to an integer from 1 to 8. When the SCI indication is 1, it indicates that the business priority is the highest; when the SCI indication is 8, it indicates that the business priority is the lowest.
  • the priority of the service may be the priority of the transport block TB of the service to be transmitted that is transmitted from the MAC layer to the physical layer.
  • a TB of traffic to be transmitted may include: at least one MAC CE and/or at least one logical channel.
  • each MAC CE corresponds to a priority
  • each logical channel corresponds to a priority.
  • the highest priority in at least one MAC CE and/or at least one logical channel included in the service to be transmitted may be determined as the priority of the entire TB of the service to be transmitted.
  • the signaling configuration includes the signaling sent by the base station for configuration, and these signaling can be RRC messages, DCI messages or SIB messages.
  • the signaling configuration may also be pre-configured for the terminal device.
  • the pre-configuration here is to define or configure the values of the corresponding parameters in advance by means of a protocol, and store them in the terminal device before the terminal device communicates. Preconfigured messages that can be modified or updated when the terminal device is connected to the Internet.
  • the signaling configuration may limit the value of the relevant parameter or the configuration information to the resource pool sent or received by the terminal device.
  • a resource pool is a collection of resources used for transmission on a particular carrier or portion of bandwidth.
  • the resource pool may be continuous or discontinuous in the time domain, and may also be continuous or discontinuous in the frequency domain. The present invention does not limit this.
  • the following takes a fully aware device as an example to describe the resource selection process in detail.
  • FIG. 1 is a schematic diagram of resource selection when device 1 and device 2 communicate. Among them, device 1 and device 2 are both fully aware devices.
  • FIG. 1 is a schematic diagram of resource selection when device 1 and device 2 communicate.
  • device 1 and device 2 are both fully aware devices.
  • the device 1 can indicate the service priority through a 3-bit (bit) priority field in the SCI1.
  • bit 3-bit
  • the service priority of device 1 is higher than that of the device 2 business priorities.
  • resource 1 occupied (or reserved) by device 1 overlaps with resource 2 occupied by device 2, device 2 will select a resource that does not overlap with resource 1.
  • device 1 Conversely, if the service priority of device 1 is lower than the service priority of device 2, device 1 will also select a resource that does not overlap with resource 2. That is to say, a fully aware device has the ability to actively avoid resources selected by services with a higher priority than its own. When only a fully aware device exists, the device can avoid resource conflicts and signal interference through its avoidance capability.
  • device 1 is a fully aware device
  • device 2 is a non-aware device.
  • device 2 selects resources, it randomly selects resources because it does not monitor any resources in the resource pool. Therefore, resource 1 occupied by device 1 and resource 2 occupied by device 2 may overlap.
  • device 1 is a fully aware device
  • device 2 is a partially aware device.
  • device 2 selects resources, since it does not completely monitor all resources in the resource pool, it may select resource 1 of device 1, that is, resource 1 occupied by device 1 and resource 2 occupied by device 2 may overlap.
  • device 1 When device 1 communicates with device 2, if the value of the priority field of device 1 in SCI1 is 1, and the value of the priority field of device 2 in SCI2 is 2, that is, the service priority of device 1 is higher than that of the device 2 business priorities. At this time, if resource 1 occupied by device 1 overlaps resource 2 occupied by device 2, device 1 will continue to occupy resource 1. If resource 1 is not within the monitoring range of device 2, device 2 will not be able to monitor the resource. 1 is occupied by device 1 and cannot be avoided, which leads to resource conflicts and signal interference.
  • device 1 is a partial sensing device
  • device 2 is a non-sensing device.
  • device 1 selects resources, it may select resource 2 of device 2 because it does not completely monitor all resources in the resource pool.
  • Device 2 may select resource 1 of device 1 because it does not monitor any resources in the resource pool. That is, resource 1 occupied by device 1 and resource 2 occupied by device 2 may overlap.
  • WiFi wireless fidelity
  • V2X vehicle-to-everything
  • D2D device-todevie
  • Communication systems Internet of Vehicles communication systems
  • 4th generation (4G) mobile communication systems such as long term evolution (LTE) systems
  • WiMAX worldwide interoperability for microwave access
  • 5th generation (5G) mobile communication systems such as new radio (NR) systems
  • 6G 6th generation
  • the network architecture and service scenarios described in the embodiments of the present application are for the purpose of illustrating the technical solutions of the embodiments of the present application more clearly, and do not constitute a limitation on the technical solutions provided by the embodiments of the present application.
  • the evolution of the architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.
  • FIG. 2 is a schematic structural diagram of a communication system to which the communication method provided by the embodiment of the present application is applied.
  • the communication system includes a plurality of terminal devices, for example, a terminal device 210 and a terminal device 220 .
  • Terminal device 210 and terminal device 220 may communicate via sidelinks.
  • the communication system may further include network equipment, such as network equipment 230 .
  • the network device can communicate with the terminal device 210 and/or the terminal device 220 through uplink and downlink.
  • FIG. 2 is only a simplified schematic diagram for easy understanding, and the communication system may also include other terminal devices or other network devices, which are not shown in FIG. 2 . Furthermore, the communication system may also include other network entities. The embodiments of the present application are not limited.
  • the above-mentioned terminal device is a terminal device that is connected to the above-mentioned communication system and has a wireless transceiver function, or a chip or a chip system that can be provided in the terminal device.
  • the terminal equipment may also be referred to as user equipment, access terminal, subscriber unit, subscriber station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent, or user equipment.
  • the terminal device in the embodiment of the present application may be a mobile phone (mobile phone), a tablet computer (Pad), a computer with a wireless transceiver function, a virtual reality (virtual reality, VR) terminal device, an augmented reality (augmented reality, AR) terminal equipment, wireless terminals in industrial control, wireless terminals in self driving, wireless terminals in remote medical, wireless terminals in smart grid, transportation security ( wireless terminal in transportation safety), wireless terminal in smart city, wireless terminal in smart home (smart home), vehicle-mounted terminal, roadside unit (RSU) with terminal function, vehicle-mounted electronics Labels (on board unit, OBU), etc.
  • a virtual reality (virtual reality, VR) terminal device an augmented reality (augmented reality, AR) terminal equipment
  • wireless terminals in industrial control wireless terminals in self driving
  • wireless terminals in remote medical wireless terminals in smart grid
  • transportation security wireless terminal in transportation safety
  • wireless terminal in smart city wireless terminal in smart home (smart home)
  • vehicle-mounted terminal roadside unit (RSU) with terminal function
  • the terminal device of the present application may also be an on-board module, on-board module, on-board component, on-board chip or on-board unit built into the vehicle as one or more components or units.
  • a vehicle-mounted chip or a vehicle-mounted unit may implement the communication method provided in this application.
  • the above-mentioned network equipment is located on the network side of the above-mentioned communication system, and has a wireless transceiver function or can be provided in a chip or a chip system of the equipment.
  • the network devices include but are not limited to: access points (APs) in wireless fidelity (WiFi) systems, such as home gateways, routers, servers, switches, bridges, etc., evolved Node B (evolved Node B (eNB), Radio Network Controller (RNC), Node B (Node B, NB), Base Station Controller (BSC), Base Transceiver Station (BTS), Home Base station (for example, home evolved NodeB, or home Node B, HNB), baseband unit (BBU), wireless relay node, wireless backhaul node, transmission point (transmission and reception point, TRP or transmission point, TP) etc., it can also be 5G, such as a gNB in a new radio (NR) system, or a transmission point (TRP or TP), one or a
  • the communication method provided by the embodiment of the present application can be applied to any two devices in FIG. 2 that perform autonomous resource selection in the same resource pool.
  • autonomous resource selection is performed in the same resource pool to implement SL communication.
  • the terminal device 210 and the terminal device 220 reference may be made to the following method embodiments, which will not be repeated here.
  • FIG. 4 is a first schematic flowchart of a communication method provided by an embodiment of the present application.
  • the communication method can be applied to the communication between the first device and the third device in FIG. 3 .
  • the communication method includes the following steps:
  • the first device determines a value of a first priority of a service to be transmitted and a priority adjustment parameter.
  • the first device requests the third device to avoid the transmission resources occupied (reserved) by the first device by increasing the priority of its own service.
  • the first device may be the above-mentioned device with limited sensing capability.
  • the above-mentioned term explanation part which will not be repeated here.
  • the first device may also be the above-mentioned fully sensing device, and for details, reference may be made to the above term explanation part, which will not be repeated here.
  • the first device may be any terminal device shown in FIG. 2 .
  • a terminal device that performs autonomous resource selection in the same resource pool as the first device and has the avoidance capability can all become the above-mentioned third device.
  • the third device with avoidance capability may include a complete sensing device and a partial sensing device capable of monitoring the transmission resources of the first device.
  • the above-mentioned service to be transmitted is a service to be sent by the first device or at a certain time point in the future, and the service may be a communication service between the first device and the second device.
  • the third device and the second device may be the same device or different devices, which are not specifically limited in this embodiment of the present application.
  • the above-mentioned first priority is the priority of the standard defined for the service to be transmitted, and meets its actual service requirements.
  • the manner in which the first device determines the value of the first priority of the service to be transmitted may be as follows:
  • the service to be transmitted includes at least one MAC CE and/or at least one logical channel, each MAC CE corresponds to a priority, and each logical channel corresponds to a priority, and the MAC CE includes at least one MAC CE and/or at least one of the services to be transmitted.
  • the highest priority in a logical channel is determined as the first priority.
  • the first device uses the highest priority in at least one MAC CE and/or at least one logical channel as the first priority of the service to be transmitted TB
  • the priority can quickly and uniquely determine the first priority of the service TB to be transmitted, so that the physical layer can select the TB resource based on this.
  • the above priority adjustment parameter is used to indicate the priority adjustment amount of the service to be transmitted.
  • the priority adjustment amount may be one, the priorities of all types of services can be adjusted according to the one priority adjustment amount.
  • service type A and service type B both correspond to the same priority adjustment amount.
  • a corresponding service type may be set for each priority adjustment amount, and the services of each service type are adjusted according to the correspondingly set priority adjustment amount.
  • the priority adjustment amount of service type 1 is v1
  • the priority adjustment amount of service type 2 is v2
  • the priority adjustment amount of service type 3 is v3.
  • the priority adjustment amount may be configured by signaling, or may be predefined.
  • the priority adjustment amount is v1.
  • the priority adjustment amount is v2. This embodiment of the present application does not specifically limit this.
  • the priority adjustment parameter indicates the priority adjustment amount as follows:
  • the priority adjustment parameter may be the priority adjustment amount itself.
  • the priority adjustment parameter is the priority adjustment amount v1.
  • the priority adjustment parameter is the priority adjustment amount of 0.
  • the priority adjustment parameter may take a valid value to indicate the one priority adjustment amount, and take an invalid value to indicate that the priority adjustment amount is 0.
  • a 1-bit binary number 1 represents the priority adjustment amount v1.
  • a 1-bit binary number 0 indicates a priority adjustment amount of 0.
  • the priority adjustment parameter may indicate the priority adjustment amount in the following manner:
  • the priority adjustment parameter may be the priority adjustment amount itself.
  • the priority adjustment parameter is the priority adjustment amount v1.
  • the priority adjustment parameter is the priority adjustment amount of 0.
  • the priority adjustment parameter may be an indication parameter that is associated with the priority adjustment amount. For example, use 2b'00 to indicate a priority adjustment of 0, use 2b'01 to indicate a priority adjustment of v1, use 2b'10 to indicate a priority adjustment of v2, and use 2b'11 to indicate a priority adjustment of v3. Assuming that the value of the priority adjustment parameter is 2b'01, it is equivalent to indicating that the priority adjustment amount of the service to be transmitted is v1. This example can avoid the problem of occupying a large number of bits caused by indicating the value of a specific priority adjustment amount, and reduce the overhead of the number of bits.
  • the priority adjustment parameter of the service to be transmitted is determined by the channel quality information and/or the first priority.
  • a priority adjustment parameter capable of indicating a larger priority adjustment amount is determined.
  • a priority adjustment parameter that can indicate a smaller amount of priority adjustment is determined.
  • the higher the first priority the smaller the space for the priority to be increased.
  • a priority adjustment parameter that can indicate a smaller priority adjustment amount is determined, which can prevent the second priority after the increase from exceeding the highest priority. priority.
  • the lower the first priority the greater the room for the priority to be increased.
  • the priority adjustment parameter that can indicate a larger priority adjustment amount is determined, so that the second priority after the increase can be as high as possible.
  • the transmission resources occupied by the third device can be successfully preempted.
  • determining a priority adjustment parameter that can indicate a larger priority adjustment amount can improve the chance of successfully preempting resources.
  • a priority adjustment parameter that can indicate a smaller priority adjustment amount can be determined.
  • the quality of the channel may be positively or negatively correlated with the channel quality information.
  • the level of the first priority may be positively correlated or negatively correlated with the value of the first priority. This embodiment of the present application does not specifically limit this.
  • the channel quality can be positively correlated with the channel quality information
  • the first priority level can be negatively correlated with the value of the first priority.
  • the relationship between the quality information and/or the value of the first priority That is, the function between the priority adjustment amount Detla and the channel quality information and/or the value of the first priority.
  • the value of the first priority is 7.
  • the priority adjustment amount Delta is 6; when the channel quality information is A2, the priority adjustment amount Delta is 5.
  • A1 is smaller than A2. That is, the smaller the channel quality information, the larger the priority adjustment amount; the larger the channel quality information, the smaller the priority adjustment amount.
  • the priority adjustment amount Delta is all 0; when the value of the first priority is 3, 4, 5, 6, 7, and 8,
  • the corresponding priority adjustment amounts Delta are 1, 2, 3, 4, 5, and 6, respectively. That is, the larger the first priority, the smaller the room for the priority adjustment amount to be increased; the smaller the first priority level, the lower the first priority, and the larger the room for the priority adjustment amount to be increased.
  • the channel quality information is A1, and the corresponding priority adjustment amounts Delta of the first priorities 1, 2, 3, 4, 5, 6, 7, and 8 are 0, 1, 2, 3, 4, and 5, respectively. , 6, 7; the channel quality information is A2, and the corresponding priority adjustment amounts Delta of the first priorities 1, 2, 3, 4, 5, 6, 7, and 8 are 0, 0, 1, 2, 3, and 4, respectively. , 5, 6.
  • A1 is smaller than A2. That is, the larger the channel quality information, the larger the first priority, and the smaller the priority adjustment amount; the smaller the channel quality information, the smaller the first priority, and the larger the priority adjustment amount.
  • a priority adjustment parameter capable of indicating a larger amount of priority adjustment is determined.
  • the priority adjustment parameter that can indicate a smaller amount of priority adjustment is determined.
  • the above-mentioned priority adjustment parameter may be configured by signaling, predefined by a protocol, or determined by the first device. This embodiment of the present application does not specifically limit this.
  • the priority adjustment parameter in the signaling for configuring the priority adjustment parameter, the priority adjustment parameter indicating the channel quality information and/or the value of the first priority are configured in a corresponding manner.
  • the value of the priority adjustment parameter corresponds to the parameter indicating the channel quality information and/or the value of the first priority.
  • the first device can quickly determine the priority adjustment parameter of the service to be transmitted based on the signaling for configuring the priority adjustment parameter, and The priority adjustment amount of the service to be transmitted is obtained according to the priority adjustment parameter.
  • the above-mentioned parameters indicating channel quality information may include one or more of the following: reference signal receiving power (reference signal receiving power, RSRP), received signal strength indicator (received signal strength indicator, RSSI), reference signal receiving quality (reference signal receiving quality (RSRQ), signal to noise ratio (SNR), signal to interference plus noise ratio (SINR), channel busy rate (CBR) or channel occupancy ratio cr.
  • reference signal receiving power reference signal receiving power
  • RSSI received signal strength indicator
  • RSSI received signal strength indicator
  • RSSI reference signal strength indicator
  • RSSI reference signal receiving quality
  • RSRQ reference signal receiving quality
  • SNR signal to noise ratio
  • SINR signal to interference plus noise ratio
  • CBR channel busy rate
  • the first device determines the value of the second priority according to the value of the first priority and the priority adjustment parameter.
  • the second priority is higher than the first priority.
  • the first device determines the value of the second priority based on the value of the first priority and the priority adjustment amount indicated by the priority adjustment parameter.
  • the value of the priority is negatively correlated with the level of the priority
  • the value of the second priority is the difference between the value of the first priority and the priority adjustment parameter.
  • the value of the second priority is the difference between the value of the first priority and the priority adjustment amount indicated by the priority adjustment parameter.
  • the value of the adjusted priority can be determined according to equation (1):
  • prioTX prioTX0-Delta Equation (1)
  • prioTX0 is the value of the first priority of the service to be transmitted
  • Delta is the priority adjustment amount, which is zero or a positive number
  • prioTX is the value of the adjusted priority, that is, the value of the second priority.
  • the value of the priority is positively related to the level of the priority, and the value of the second priority is the sum of the value of the first priority and the priority adjustment amount indicated by the priority adjustment parameter. Specifically, the value of the second priority is taken. The value is the difference between the value of the first priority and the priority adjustment amount indicated by the priority adjustment parameter.
  • the value of the adjusted priority can be determined according to equation (2):
  • prioTX0 is the value of the first priority of the service to be transmitted
  • Delta is the priority adjustment amount, which is zero or a positive number
  • prioTX is the value of the adjusted priority, that is, the value of the second priority.
  • step 402 is executed.
  • the target condition may include one or more of the following: the priority adjustment function of the first device has been activated.
  • the first priority is higher than the first threshold.
  • the signal quality information detected by the first device on the resource pool is lower than the second threshold.
  • the resource occupancy rate of the resource pool corresponding to the first device is lower than the occupancy rate threshold.
  • the signal quality information detected by the first device on the resource pool is lower than the second threshold.
  • the service period of the service to be transmitted is higher than the period threshold.
  • the traffic of the first device is lower than the quantity threshold.
  • the first device operates in a power saving mode.
  • the priority adjustment function of the first device has been activated.
  • the priority adjustment function of the first device may be configured on the resource pool by means of protocol pre-definition, network pre-configuration or dynamic configuration, and this function may be activated or deactivated.
  • the resource occupancy rate of the resource pool corresponding to the first device is less than or equal to the occupancy rate threshold.
  • the occupancy rate threshold may be configured through protocol pre-configuration, network pre-configuration, or dynamic configuration.
  • the occupancy rate threshold may be a real number less than 1, such as 0.1, 0.2, 0.3, etc.
  • the service period of the service to be transmitted is greater than or equal to the period threshold.
  • the period threshold can be configured by means of protocol pre-definition, network pre-configuration or dynamic configuration.
  • the period threshold can be 100ms, 200ms, 500ms, etc. Integer.
  • the traffic volume of the first device is less than or equal to a quantity threshold
  • the quantity threshold may be configured by means of protocol pre-definition, network pre-configuration, or dynamic configuration.
  • the traffic volume can be obtained by detecting any of the following: the number of services of the first device, the traffic density, the proportion of services of the first device in all terminal devices, or the ratio of services of the first device to that of the third device.
  • the quantity threshold can be adaptively adjusted according to different types of traffic. For example, when the traffic volume is characterized by the number of services, the number threshold can be the number of sending users per unit area at a given time, such as 20 users in 1 km, or 20 users in 100 meters before and after a lane.
  • the quantity threshold can be the throughput in unit time, such as the amount of data transmitted in 1 second, such as 100 Mbps, 1 Gbps, and so on.
  • the quantity threshold may be a constant greater than 0 and less than 1, such as 1%, 10%, and 30%.
  • the quantity threshold may be a constant greater than 0 and less than 1, such as 1%, 10%, and 30%.
  • the service volume on the resource pool is determined by detecting the resource occupancy rate of the resource pool, the service period of the service to be transmitted, and the service volume of the first device.
  • the service volume on the resource pool is small, there are enough idle resources. It can be selected to avoid the resources already occupied by the first device, so as to ensure the reliability and efficiency of communication between the two parties.
  • the first device operates in a power saving mode.
  • the power saving mode may be a full power saving mode, that is, the first device is a non-sensing device; it may also be a partial power saving mode, that is, the first device is a partially sensing device.
  • the power saving mode can be implicitly indicated in the SCI through resource selection, or can be indicated explicitly through the reserved bits of the SCI. There are no restrictions here.
  • the priority adjustment function is enabled for the device that needs to save power, so as to tell the third device to avoid the resources occupied by the terminal that needs to save power, so as to ensure the communication efficiency and reliability of the terminal that needs to save power. sex.
  • the first priority is higher than the first threshold.
  • the first threshold is a non-negative integer.
  • the value of the first threshold may be any integer between 1 and 7, or may be any integer between 0 and 8, which is not limited in the present invention.
  • the first priority being higher than the first threshold means that the value of the first priority is lower than the value of the first threshold.
  • the value of the first priority is a positive integer between 1 and 8.
  • the value of the first threshold is 5.
  • the values of the first priorities higher than the first threshold are positive integers between 1 and 5, respectively.
  • services to be transmitted with a sufficiently high first priority are screened for priority adjustment, so as to prevent the third device from evading resources for unimportant tasks in the first device and affecting its more important services.
  • the signal quality information detected by the first device on the resource pool is lower than a second threshold
  • the second threshold may be configured by means of protocol pre-definition, network pre-configuration, or dynamic configuration.
  • the first device may obtain the signal quality information by obtaining one or more of the following: RSRP, RSSI, RSRQ, SNR, SINR, CBR, or CR.
  • the second threshold can be adaptively adjusted according to different types of signal quality information. For example, when the signal quality information is characterized by RSRP, the second threshold can be -70dBm, -80dBm, -90dBm or -100dBm.
  • the second threshold can be -60dbm, -70dBm, -80dBm or -90dBm, etc.
  • the second threshold may be -6dB, -3dB, 0dB, 3dB, 6dB or 10dB, etc.
  • the second threshold can be -6dB, -3dB, 0dB, 3dB, 6dB or 10dB, etc.
  • the second threshold can be -6dB, -3dB, 0dB, 3dB, 6dB or 10dB, etc.
  • SINR the second threshold can be -6dB, -3dB, 0dB, 3dB, 6dB or 10dB, etc.
  • the second threshold may be a real number less than 1, such as 0.1, 0.2, 0.3, etc.
  • the second threshold may be a real number less than 1, such as 0.01, 0.02, 0.03, 0.05, 0.06, 0.1, etc.
  • the signal quality on the resource pool is good, it means that there are enough idle resources for the third device to select, so as to avoid the resources already occupied by the first device, so as to ensure the reliability and efficiency of communication between the two parties.
  • the first priority is determined as the second priority.
  • the above-mentioned first threshold and second threshold are determined by the resource selection mode and/or transmission mode of the first device.
  • the resource selection method includes any one of the following: a random resource selection method, a partially perceived resource selection method, and a fully perceived resource selection method;
  • the transmission mode includes any one of the following: a mode based on ITS services, a mode based on public safety services, and a mode based on commercial services.
  • the ITS service generally refers to a service based on the V2X system, which transmits information on traffic, travel, vehicle driving, automatic driving, pedestrians, and other aspects of traffic.
  • public safety services refer to services that provide communication guarantees and services under extreme conditions such as fires, earthquakes, wars, and floods.
  • commercial services refer to services that are used for users to perform normal communication, such as voice, file transmission, data transmission, and the like.
  • the resource selection mode with less monitoring the lower the corresponding first threshold.
  • the lower the first threshold is, the higher the value of the first threshold is. If the value of the first priority is positively correlated with the level of the first priority, the lower the first threshold is, the lower the value of the first threshold is.
  • the order of monitoring amount is: random resource selection method ⁇ partially perceived resource selection method ⁇ completely perceived device.
  • the order of the corresponding first threshold is: random resource selection mode ⁇ partially perceived resource selection mode ⁇ completely aware device.
  • the corresponding relationship between the resource selection mode and the first threshold may be configured through signaling, or may be predefined. This embodiment of the present application does not specifically limit this.
  • the resource selection mode with less monitoring the lower the corresponding first threshold.
  • the first device that adopts the resource selection method with less monitoring can have more services, and can satisfy the condition that the first priority is higher than the first threshold, so that the priority adjustment function is enabled, so that less monitoring resources are used.
  • the transmission resources of more services of the first device in the selection mode are protected.
  • the energy saving requirement is higher.
  • a lower first threshold is set so that more service transmission resources can be used. protection to improve the energy-saving effect of such equipment.
  • the value of the first priority is negatively correlated with the level of the first priority.
  • the value of the first priority is a positive integer between 1 and 8.
  • the value of the first threshold of the random resource selection mode is 6, the value of the first threshold of the partially perceived resource selection mode is 3, and the value of the first threshold of the fully perceived resource selection mode is 1.
  • the priority adjustment function can be enabled for the services whose first priority of the first device in the random resource selection mode is between 1 and 6.
  • the priority adjustment function can be enabled for the service whose first priority value of the first device is between 1 and 3 in the partially-aware resource selection manner.
  • a service whose first priority value of the first device is 1 in the fully aware resource selection mode can enable the priority adjustment function.
  • the corresponding first threshold is lower.
  • the order of reliability requirements may be: mode based on public safety service>mode based on ITS service>mode based on commercial service.
  • the order of the corresponding first threshold is: mode based on public safety service ⁇ mode based on ITS service ⁇ mode based on commercial service.
  • the correspondence between the transmission mode and the first threshold may be configured through signaling, or may be predefined. This embodiment of the present application does not specifically limit this.
  • the ordering of reliability requirements may also be in other manners, for example: mode based on public safety service>mode based on commercial service>mode based on ITS service. This embodiment of the present application does not specifically limit this.
  • the higher the reliability requirement is for the transmission mode the lower the corresponding first threshold is. In this way, it can be ensured that more services with higher reliability requirements in the first device, such as more public safety services, can satisfy the condition that the first priority is higher than the first threshold, thereby enabling the priority adjustment function.
  • the transmission resources of more services in transmission modes with higher reliability requirements are protected. In other words, this example can enable more transmission resources of services with high reliability requirements to be protected.
  • the resource selection mode with less monitoring the lower the corresponding second threshold.
  • the lower the second threshold is, the more idle the channel is.
  • the corresponding second threshold is ranked as follows: random resource selection mode ⁇ partially perceived resource selection mode ⁇ completely aware device.
  • the corresponding relationship between the resource selection mode and the second threshold may be configured through signaling, or may be predefined. This embodiment of the present application does not specifically limit this.
  • the resource selection mode with less monitoring the higher the energy saving requirement, and the lower the corresponding second threshold.
  • the first device using the resource selection method with less monitoring can enable the priority adjustment function only when the channel is more idle.
  • the first device that adopts the resource selection method with less monitoring turns on the priority adjustment function again, the channel is more idle, and there are more transmission resources available for selection.
  • the service transmission resources of the first device using the resource selection method with less monitoring can be more protected, thereby achieving the effect of better energy saving due to less monitoring.
  • the lower the reliability requirement is for the transmission mode the lower the corresponding second threshold.
  • the lower the second threshold is, the more idle the channel is required to be.
  • the order of reliability requirements may be: mode based on public safety service > mode based on ITS service > mode based on commercial service.
  • the order of the corresponding second threshold may be: mode based on public safety service ⁇ mode based on ITS service ⁇ mode based on commercial service.
  • the corresponding relationship between the resource selection mode and the second threshold may be configured through signaling, or may be predefined.
  • the ordering of reliability requirements may also be in other manners, for example: mode based on public safety service>mode based on commercial service>mode based on ITS service. This embodiment of the present application does not specifically limit this.
  • the lower the reliability requirement is for the transmission mode, the lower the corresponding second threshold. That is, for services in transmission modes with lower reliability requirements, such as commercial services, the priority adjustment function can be enabled only when the channel is more idle, which puts forward more stringent conditions for the protection of low-reliability services and reduces the use of them. scenarios, so as to better protect the transmission of higher reliability services.
  • the first device sends priority indication information.
  • the third device receives the priority indication information from the first device.
  • the second device receives the priority indication information from the first device.
  • the priority indication information includes the value of the second priority.
  • the first device determines the transmission resource of the service to be transmitted according to the value of the second priority. In this way, the first device determines better or more transmission resources based on the increased priority, thereby improving the communication efficiency and reliability of the first device.
  • the priority indication information further includes a priority adjustment parameter.
  • a priority adjustment parameter For the specific meaning of the priority adjustment parameter, refer to the content in step S401, which will not be repeated here.
  • the priority adjustment parameter is used to indicate the priority adjustment amount of the service to be transmitted, by indicating the priority adjustment parameter in the priority indication information, it can be indicated whether the priority of the service to be transmitted is adjusted, In order to enable the third device to adjust the parameter based on the priority, determine whether the value of the priority in the priority indication information is the adjusted priority or the unadjusted priority.
  • the above priority indication information is implemented by SCI.
  • the first device sends the SCI carrying the value of the second priority to the third device through the control channel PSCCH of the SL.
  • the SCI includes a priority field, and the value of the second priority is carried in the priority field.
  • Priority adjustment parameters can be indicated in the SCI by means of explicit or implicit indication.
  • different values of the priority adjustment parameter are explicitly indicated by different values of the reserved bits of the SCI.
  • the priority adjustment parameter is implicitly indicated by a field indicating a power saving mode or a resource selection manner.
  • the indication information of the priority adjustment parameter in the SCI may be 1 bit, 2 bits or more.
  • the priority adjustment parameter may be indicated by a reserved bit in the first-level SCI.
  • different values of the indication information of the priority adjustment parameter in the SCI correspond to different priority adjustment parameter values.
  • the priority adjustment parameter value may be predefined, or may be configured in advance by signaling to the sending and/or receiving device. The first value is used to indicate that the priority adjustment parameter is v1, and the second value is used to indicate that the priority adjustment parameter is v2. Where v1 and v2 are signaling configured or predefined.
  • the first device sends priority indication information so as to notify the third device, which is an assisting party of transmission resources, to learn the value of the second priority of the service to be transmitted from the priority indication information, and based on the service to be transmitted
  • the value of the second priority determines its own resource selection strategy.
  • the third device After receiving the priority indication information, the third device needs to obtain the value of the second priority of the service to be transmitted based on the priority indication information, and determine its own resource selection according to the value of the second priority of the service to be transmitted.
  • the strategy involves the following steps:
  • Step 1 The third device parses the priority indication information to obtain the value of the second priority of the service to be transmitted.
  • Step 2 After obtaining the value of the second priority of the service to be transmitted, the third device will determine its own resource selection policy according to the value of the second priority of the service to be transmitted, so as to determine whether to avoid the first device as the The resources occupied by the service to be transmitted.
  • the third device refers to a terminal device with resource avoidance capability.
  • a fully aware device a partially aware device capable of sensing the transmission resources of the first device.
  • the following is a detailed description of the resource avoidance process of the third device by taking the complete sensing device and the partial sensing device as examples respectively.
  • a fully aware device is used as an example to describe the resource avoidance process of the third device in detail.
  • the third device is a fully aware device. It is assumed that the first resource occupied by the first device overlaps with the second resource occupied by the third device. At this time, the third device can detect the transmission resource reserved by the first device for the service to be transmitted, that is, the first resource in FIG. 3 , which has the ability to actively avoid the resource selected by the service with a higher priority than its own.
  • the value of the priority field of the third device in SCI4 is 2, and the value of the priority field of the first device in SCI3 is 2, that is, the service priority of the third device and the first device transmitted
  • the value of the second priority is the same.
  • the third device may determine whether the value of the second priority of the service to be transmitted is the adjusted priority based on the priority adjustment parameter.
  • the adjusted priority of the service to be transmitted is the same as the priority of the third device. In other words, if the priority of the first device before adjustment, that is, the first priority is lower than the service priority of the third device, the third device may not avoid the service to be transmitted.
  • the third device may choose to avoid or not to avoid the service to be transmitted.
  • the third device may determine the resource avoidance policy according to the resource occupancy rate. For example, if the third device detects that the resource occupancy rate is less than or equal to the occupancy rate threshold, it avoids the service to be transmitted. If the third device detects that the resource occupancy rate is greater than the occupancy rate threshold, it does not avoid the service to be transmitted.
  • the value of the priority adjustment amount indicated by the priority adjustment parameter is 0, it indicates that the value of the second priority of the service to be transmitted has not been adjusted. On the contrary, if the value of the priority adjustment amount indicated by the priority adjustment parameter is not 0, it means that the value of the second priority of the service to be transmitted has been adjusted.
  • the priority adjustment parameter is the priority adjustment amount itself, when the priority adjustment parameter is 0, it means that the value of the second priority of the service to be transmitted has not been adjusted; when the priority adjustment parameter is not 0 , indicating that the value of the second priority of the service to be transmitted has been adjusted.
  • the priority adjustment parameter is an indication parameter associated with the priority adjustment amount
  • the priority adjustment parameter when the priority adjustment parameter is 0, it indicates that the value of the second priority of the service to be transmitted has not been adjusted; When the parameter is not 0, it indicates that the value of the second priority of the service to be transmitted has been adjusted.
  • the value of the priority adjustment parameter is a valid value, it means that the value of the second priority of the service to be transmitted has been adjusted. If the value of the priority adjustment parameter is invalid, it means that the value of the second priority of the service to be transmitted has not been adjusted.
  • the 1-bit binary number 1 indicates that the value of the second priority of the service to be transmitted is not adjusted.
  • the third device will select a resource that does not overlap with the first resource, and avoid the first resource to the first device, thereby improving the communication efficiency of the first device, for example, a device with limited sensing capability or a device with complete sensing capability and reliability.
  • the third device is a partial sensing device.
  • the third device will not be able to detect the transmission resources occupied by the first device for the service to be transmitted, and does not have the resource avoidance capability and cannot avoid targeted avoidance.
  • the third device can detect the resource and can avoid it in a targeted manner.
  • the third device is equivalent to a complete perception device, and its resource selection process refers to a fully aware device, which will not be repeated here.
  • the first device when the first device is a device with limited sensing capability, the first device can notify a third device, such as a fully aware device, that the priority of the service to be transmitted has been adjusted to a higher priority.
  • a third device such as a fully aware device
  • a high priority for example, is lowered from the first priority to the second priority, so that the third device can avoid the resources occupied by the device with limited perception capability, and can solve the power saving needs and data of the device with limited perception capability.
  • the technical problem that the transmission performance cannot be taken into account, thereby improving the communication efficiency and reliability of the device with limited sensing ability.
  • the first device when the first device is a fully aware device, the first device may notify a third device, such as a fully aware device, that the priority of the service to be transmitted has been adjusted to a higher priority, such as from the first priority. High is the second priority, so that the third device can avoid the resources occupied by the first device as the fully aware device, and can ensure the communication efficiency and reliability of the fully aware device in characteristic scenarios, such as the transmission of public safety service scenarios .
  • a third device such as a fully aware device
  • the second device determines the value of the first priority according to the value of the second priority and the priority adjustment parameter.
  • the second device determines the value of the first priority based on the value of the second priority and the priority adjustment amount indicated by the priority adjustment parameter.
  • the value of the priority and the level of the priority may be negatively correlated or may be positively correlated. This embodiment of the present application does not specifically limit this.
  • the value of the priority is negatively correlated with the level of the priority
  • the value of the first priority is the sum of the value of the second priority and the priority adjustment parameter.
  • the value of the first priority is the sum of the value of the second priority and the priority adjustment amount indicated by the priority adjustment parameter.
  • the value of the priority is positively related to the level of the priority, and the value of the first priority is the difference between the value of the second priority and the priority adjustment parameter. Specifically, the value of the first priority is the difference between the value of the second priority and the priority adjustment amount indicated by the priority adjustment parameter.
  • the above-mentioned priority adjustment parameter may be sent by the first device in the priority indication information, or may be configured or predefined through signaling. This embodiment of the present application does not specifically limit this.
  • the second device determines, according to the value of the first priority, whether to demodulate the service to be sent; or, whether to send feedback information of the service to be transmitted.
  • the second device determines whether to demodulate the to-be-transmitted service based on the first priority of the to-be-transmitted service sent by the first device, that is, the standard priority of the to-be-transmitted service; or, whether to send the to-be-transmitted service
  • the feedback information is not the adjusted virtual second priority, so as to avoid that the adjusted second priority of the first device affects the demodulation or feedback of other services by the second device, and interferes with the data transmission performance of other services.
  • FIG. 5 is a second schematic flowchart of a communication method provided by an embodiment of the present application.
  • the communication method can be applied to the communication between the first device and the third device in FIG. 3 .
  • the communication method includes the following steps:
  • the first device determines a value of a first priority of a service to be transmitted and a priority adjustment parameter.
  • the first device as an assisting party of transmission resources, lowers the priority of its own service to actively avoid the transmission resources occupied (reserved) by the third device.
  • the first device as an assister of transmission resources, refers to a terminal device with avoidance capability, and the specific implementation method is as follows:
  • the first device may be a fully aware device.
  • the first device may also be a partial sensing device capable of monitoring the transmission resources occupied by the third device.
  • the first device may be any terminal device shown in FIG. 2 .
  • a terminal device that independently selects resources in the same resource pool as the first device and has reliability requirements can all become the above-mentioned third device.
  • the third device may be various implementations of the first device in the communication method shown in FIG. 4 , which will not be repeated here.
  • the above-mentioned service to be transmitted is a service to be sent by the first device or at a certain time point in the future, and the service may be a communication service between the first device and the second device.
  • the third device and the second device may be the same device or different devices, which are not specifically limited in this embodiment of the present application.
  • the above-mentioned first priority is the priority of the standard defined for the service to be transmitted, and meets its actual service requirements.
  • the manner in which the first device determines the value of the first priority of the service to be transmitted may refer to the manner provided by the communication method shown in FIG. 4 , which will not be repeated here.
  • the above priority adjustment parameter is used to indicate the priority adjustment amount of the service to be transmitted.
  • the priority adjustment parameter indicates the priority adjustment amount, reference may be made to the manner provided by the communication method shown in FIG. 4 , and details are not described herein again.
  • the configuration manner of the above-mentioned priority adjustment parameters may be determined by signaling configuration, protocol pre-definition, or by the first device. This embodiment of the present application does not specifically limit this.
  • the priority adjustment parameter of the service to be transmitted is determined by the channel quality information and/or the first priority.
  • a priority adjustment parameter capable of indicating a larger amount of priority adjustment is determined.
  • the lower the first priority the smaller the space for the priority to be lowered.
  • a priority adjustment parameter that can indicate a smaller priority adjustment amount is determined, which can prevent the lowered second priority from exceeding the lowest Priority; the higher the first priority, the greater the space for the priority to be adjusted.
  • a priority adjustment parameter that can indicate a larger priority adjustment amount is determined, which can make the adjusted second priority as low as possible. lower, the transmission resources occupied by the third device can be avoided more successfully.
  • determining a priority adjustment parameter that can indicate a larger priority adjustment amount can improve the chance of successfully avoiding resources.
  • a priority adjustment parameter that can indicate a smaller priority adjustment amount can be determined.
  • the quality of the channel may be positively or negatively correlated with the channel quality information.
  • the level of the first priority may be positively correlated or negatively correlated with the value of the first priority. This embodiment of the present application does not specifically limit this.
  • the quality of the channel can be positively correlated with the channel quality information.
  • the level of the first priority may be negatively correlated with the value of the first priority, and a specific example is given to illustrate the relationship between the priority adjustment amount indicated by the priority adjustment parameter and the channel quality information and/or the value of the first priority.
  • the value of the first priority is 1.
  • the priority adjustment amount Delta is 6; when the channel quality information is A2, the priority adjustment amount Delta is 5.
  • A1 is smaller than A2. That is, the smaller the channel quality information, the larger the priority adjustment amount; the larger the channel quality information, the smaller the priority adjustment amount.
  • the priority adjustment amounts Delta are respectively 6, 5, 4, 3, and 2; when the values of the first priority are When it is 6, 7, and 8, the corresponding priority adjustment amount Delta is all 0. That is, the larger the first priority, the larger the room for the priority adjustment amount to be adjusted; the smaller the first priority, the lower the first priority, and the smaller the space for the priority adjustment amount to be adjusted.
  • the channel quality information is A1, and the corresponding priority adjustment amounts Delta of the first priorities 1, 2, 3, 4, 5, 6, 7, and 8 are 7, 6, 5, 4, 3, and 2, respectively. , 1, 0; the channel quality information is A2, and the corresponding priority adjustment amount Delta of the first priority 1, 2, 3, 4, 5, 6, 7, 8 is 6, 5, 4, 3, 2, 1 , 0, 0.
  • A1 is smaller than A2. That is, the larger the channel quality information, the larger the first priority, and the smaller the priority adjustment amount; the smaller the channel quality information, the smaller the first priority, and the larger the priority adjustment amount.
  • a priority adjustment parameter capable of indicating a larger amount of priority adjustment is determined.
  • the lower the first priority is, the less important the service to be transmitted is. Determining a priority adjustment parameter that can indicate a smaller priority adjustment amount can provide more protection for important services in the third device.
  • the better the channel quality, the more idle the channel on the resource pool is, and more resources are available. Determining the priority adjustment parameter that can indicate a larger priority adjustment amount can improve the chances of successfully avoiding resources when the channel is sufficiently idle.
  • the above-mentioned priority adjustment parameter may be configured by signaling, predefined by a protocol, or determined by the first device. This embodiment of the present application does not specifically limit this.
  • the priority adjustment parameter in the signaling for configuring the priority adjustment parameter, the priority adjustment parameter indicating the channel quality information and/or the value of the first priority are configured in a corresponding manner.
  • the value of the priority adjustment parameter corresponds to the parameter indicating the channel quality information and/or the value of the first priority.
  • the first device can quickly determine the priority adjustment parameter of the service to be transmitted based on the signaling for configuring the priority adjustment parameter, and The priority adjustment amount of the service to be transmitted is obtained according to the priority adjustment parameter.
  • the first device determines the value of the second priority according to the value of the first priority and the priority adjustment parameter.
  • the second priority is lower than the first priority.
  • the first device determines the value of the second priority based on the value of the first priority and the priority adjustment amount indicated by the priority adjustment parameter.
  • the value of the priority is negatively correlated with the level of the priority
  • the value of the second priority is the sum of the value of the first priority and the priority adjustment parameter.
  • the value of the second priority is the sum of the value of the first priority and the priority adjustment amount indicated by the priority adjustment parameter. More specifically, the value of the adjusted priority may be determined by referring to Equation (2) in the communication method shown in FIG. 4 , which will not be repeated here.
  • the value of the priority is positively related to the level of the priority, and the value of the second priority is the difference between the value of the first priority and the priority adjustment amount indicated by the priority adjustment parameter. Specifically, the value of the second priority is taken. The value is the difference between the value of the first priority and the priority adjustment amount indicated by the priority adjustment parameter. More specifically, the value of the adjusted priority may be determined by referring to equation (1) in the communication method shown in FIG. 4 , which will not be repeated here.
  • step 502 is executed.
  • the target condition may include one or more of the following: the priority adjustment function of the first device has been activated.
  • the first priority is lower than the first threshold.
  • the signal quality information detected by the first device on the resource pool is lower than the second threshold.
  • the resource occupancy rate of the resource pool corresponding to the first device is less than or equal to the occupancy rate threshold.
  • the signal quality detected by the first device on the resource pool is lower than the quality threshold.
  • the service period of the service to be transmitted is greater than or equal to the period threshold.
  • the traffic volume of the first device is less than or equal to the quantity threshold.
  • the first device operates in a non-power saving mode.
  • the first priority is lower than the first threshold.
  • the first priority is lower than the first threshold, that is: the value of the first priority is higher than the value of the first threshold.
  • the value of the first priority is a positive integer between 1 and 8.
  • the value of the first threshold is 5.
  • the values of the first priorities lower than the first threshold are positive integers between 6 and 8, respectively.
  • the services to be transmitted whose first priorities are sufficiently low are screened out for priority adjustment, so as to avoid affecting the more important services of the first device itself in order to avoid the second device.
  • the first device works in a non-power saving mode, that is, the first device is a fully aware device.
  • the first device works in a non-power saving mode, that is, the first device is a fully aware device.
  • enabling the priority adjustment function for devices without power-saving needs to actively avoid the resources occupied by the third device can prevent devices with power-saving needs from avoiding and increase their own power.
  • the first priority is determined as the second priority.
  • the above-mentioned first threshold and second threshold are determined by the transmission mode of the first device.
  • the transmission mode includes any one of the following: a mode based on ITS services, a mode based on public safety services, and a mode based on commercial services.
  • the corresponding first threshold is higher. At this time, it is equivalent to letting the low-priority service actively avoid the high-priority service that has been or is being transmitted. Alternatively, by lowering the priority of the service to be sent, the high-priority service being transmitted is allowed to preempt the resources selected by the low-priority service to be sent out.
  • the order of reliability requirements may be: mode based on public safety service>mode based on ITS service>mode based on commercial service.
  • the order of the corresponding first threshold is: mode based on public safety service>mode based on ITS service>mode based on commercial service.
  • the correspondence between the transmission mode and the first threshold may be configured through signaling, or may be predefined. This embodiment of the present application does not specifically limit this.
  • the ordering of reliability requirements may also be in other manners, for example: mode based on public safety service>mode based on commercial service>mode based on ITS service. This embodiment of the present application does not specifically limit this.
  • the corresponding first threshold is higher.
  • the first device actively avoids the public safety service being transmitted.
  • Corresponding commercial services with high reliability requirements are avoided accordingly (the first threshold is slightly lower); corresponding commercial services with low reliability requirements are avoided correspondingly (the first threshold is slightly higher). In this way, the purpose of adjusting the priority of commercial services for different reliability requirements can be achieved.
  • the corresponding second threshold is lower.
  • the traffic of the currently higher priority traffic type it can only be used under lower signal quality (more idle channel conditions).
  • the order of reliability requirements may be: mode based on public safety service > mode based on ITS service > mode based on commercial service.
  • the order of the corresponding second threshold may be: mode based on public safety service ⁇ mode based on ITS service ⁇ mode based on commercial service.
  • the corresponding relationship between the resource selection mode and the second threshold may be configured through signaling, or may be predefined.
  • the ordering of reliability requirements may also be in other manners, for example: mode based on public safety service>mode based on commercial service>mode based on ITS service. This embodiment of the present application does not specifically limit this.
  • the higher the reliability requirement is for the transmission mode the lower the corresponding second threshold is.
  • the lower the second threshold is, the more idle the channel is required to be.
  • the priority adjustment function can only be enabled when the channel is more idle, which puts forward more stringent conditions for the protection of high-reliability services and reduces the Therefore, try to avoid the high reliability service in the first device to avoid the service of the third device, so as to better protect the transmission of the higher reliability service of the first device itself.
  • the first device sends priority indication information.
  • the third device receives the priority indication information from the first device.
  • the second device receives the priority indication information from the first device.
  • the priority indication information includes the value of the second priority.
  • the priority indication information can be implemented through SCI, and the specific implementation can refer to the communication method shown in FIG. 4 . It will not be repeated here.
  • the first device determines the transmission resource of the service to be transmitted according to the value of the second priority. In this way, the transmission resource determined by the first device based on the lowered priority can avoid the transmission resource of the third device, thereby ensuring the communication efficiency and reliability of the third device.
  • the priority indication information further includes a priority adjustment parameter.
  • a priority adjustment parameter For the effect of this embodiment, refer to the effect of the communication method shown in FIG. 4 , which will not be repeated here.
  • the priority adjustment parameter is used to indicate the priority adjustment amount of the service to be transmitted, by indicating the priority adjustment parameter in the priority indication information, it can be indicated whether the priority of the service to be transmitted is adjusted, In order to enable the third device to adjust the parameter based on the priority, determine whether the value of the priority in the priority indication information is the adjusted priority or the unadjusted priority.
  • the indication information of the priority adjustment parameter in the SCI may be 1 bit, 2 bits or more.
  • the priority adjustment parameter may be indicated by a reserved bit in the first-level SCI.
  • different values of the indication information of the priority adjustment parameter in the SCI correspond to different priority adjustment parameter values.
  • the priority adjustment parameter value may be predefined, or may be configured in advance by signaling to the sending and/or receiving device. The first value is used to indicate that the priority adjustment parameter is v1, and the second value is used to indicate that the priority adjustment parameter is v2. Where v1 and v2 are signaling configured or predefined.
  • the first device acts as an assisting party for transmitting resources, and the first device performs an action of resource avoidance.
  • the assisted party when the third device can detect the transmission resources occupied by the first device, it can also know the second priority of the service to be transmitted according to the priority indication information sent by the first device. value to determine your own resource selection strategy.
  • the first device as an assisting party of the transmission resources, may be a fully aware device and a partial aware device capable of sensing the transmission resources of the third device.
  • the third device may be various implementations of the first device in the communication method shown in FIG. 4 .
  • the following is an example to illustrate the resource avoidance process when the resources of the first device and the third device conflict. It should be noted that, in the following examples, the value of the priority is negatively correlated with the level of the priority.
  • the first device for the first example, please refer to FIG. 3 , taking the first device as a fully aware device and the third device as a fully aware device as an example, to describe in detail the resource avoidance process when the two resources conflict.
  • the first device receives the SCI4 of the third device, and determines the service priority and the second resource of the third device.
  • the value of the priority field of the third device in SCI4 is 2, and the value of the priority field of the first device in SCI3 is 2, that is, the value of the second priority of the service to be transmitted of the first device is 2.
  • the value is the same as the priority of the service transmitted by the third device.
  • the first device may determine whether the value of the second priority of its own service to be transmitted is the adjusted priority. If the value of the second priority of the first device is the adjusted priority, the lowered priority of the service to be transmitted is the same as the service priority of the third device. In other words, if the priority of the first device before adjustment, that is, the first priority is higher than the service priority of the third device, the first device may continue to occupy the first resource without avoiding the third device. If the value of the second priority of the first device is the unadjusted priority. The first device may choose to avoid or not to avoid the third device. Alternatively, the first device may determine the resource avoidance policy according to the resource occupancy rate. For example, if the first device detects that the resource occupancy rate is less than or equal to the occupancy rate threshold, it avoids the third device. If the first device detects that the resource occupancy rate is greater than the occupancy rate threshold, it does not avoid the third device.
  • the first device will give up the first resource, select a resource that does not overlap with the first resource, and avoid the first resource to the third device, thereby ensuring that the third device is fully aware of the device-to-device communication in a specific scenario High demands for efficiency and reliability.
  • the third device receives the priority indication information sent by the first device, that is, the SCI3 of the first device, and determines the service priority and the first resource of the first device.
  • the value of the priority field of the third device in SCI4 is 2, and the value of the priority field of the first device in SCI3 is 2, that is, the value of the second priority of the service to be transmitted of the first device is 2.
  • the value is the same as the priority of the service transmitted by the third device.
  • the third device can determine whether the value of the second priority of the service to be transmitted is the adjusted priority based on the priority adjustment parameter indicated in SCI3 sent by the first device. It is not repeated here.
  • the resource avoidance process of the third device also refers to the resource avoidance process of the third device in the first example of the communication method shown in FIG. 4 , which will not be repeated here.
  • the third device continues to occupy the second resource, thereby ensuring that the fully aware device serving as the third device in a specific scenario has high requirements for communication efficiency and reliability.
  • the second example please refer to FIG. 3 , taking the first device as a full sensing device and the third device as a partial sensing device as an example, to describe in detail the resource avoidance process when the two resources conflict.
  • the first device receives the SCI4 of the third device, and determines the service priority and the second resource of the third device.
  • the specific resource avoidance process reference may be made to the resource avoidance process of the first device in the first example of the communication method shown in FIG. 5 , which will not be repeated here.
  • the third device For a part of the sensing device as the third device, if the first resource of the first device is within the detection range of the third device, the third device receives the priority indication information sent by the first device, that is, the SCI3 of the first device. , and determine the service priority and the first resource of the first device.
  • the third device is equivalent to a fully aware device, and the specific resource avoidance process may refer to the resource avoidance process of the third device in the first example of the communication method shown in FIG. 5 , which will not be repeated here.
  • This example can solve the technical problem that the power saving requirement and data transmission performance of some sensing devices cannot be taken into account, and the communication efficiency and reliability of some sensing devices can be improved.
  • the first device for a third example, please refer to FIG. 3 , taking the first device as a fully-aware device and the third device as a non-aware device as an example, to describe in detail the resource avoidance process when the two resources conflict.
  • the non-sensing device As the third device, it is a blind selection method and cannot sense the first resource of the first device. Resource avoidance cannot be performed. In this case, the resource avoidance of the first device is relied on.
  • the first device receives the SCI4 of the third device, and determines the service priority and the second resource of the third device.
  • the specific resource avoidance process reference may be made to the resource avoidance process of the first example in the communication method shown in FIG. 5 , which will not be repeated here.
  • This example can solve the technical problem that the power saving requirement of the sensorless device and the data transmission performance cannot be taken into account, and improve the communication efficiency and reliability of the sensorless device.
  • the first device For a part of the sensing device serving as the first device, if the second resource occupied by the third device is within the detection range of the first device, at this time, the first device is equivalent to a complete sensing device and has the resource avoidance capability.
  • the specific resource avoidance process reference may be made to the resource avoidance process of the first device in the first example in the communication method shown in FIG. 5 , which will not be repeated here.
  • This example can address improving the communication efficiency and reliability of a third device, eg, a fully aware device, a device with limited sensing capability.
  • the first device can lower the priority of the service to be transmitted, such as from the first priority to the second priority, so as to actively Avoid the transmission resources occupied by third devices, such as devices with limited sensing capabilities.
  • third devices such as devices with limited sensing capabilities.
  • the first device can lower the priority of the service to be transmitted, such as from the first priority to the second priority, so as to actively avoid the third device, such as a fully aware device, Occupied transmission resources. In this way, the communication efficiency and reliability of the fully aware device in characteristic scenarios, such as the transmission of public safety service scenarios, can be ensured.
  • the second device determines the value of the first priority according to the value of the second priority and the priority adjustment parameter.
  • the second device determines the value of the first priority based on the value of the second priority and the priority adjustment amount indicated by the priority adjustment parameter.
  • the value of the priority is negatively correlated with the level of the priority
  • the value of the first priority is the difference between the value of the second priority and the priority adjustment parameter.
  • the value of the first priority is the difference between the value of the second priority and the priority adjustment amount indicated by the priority adjustment parameter.
  • the value of the priority is positively related to the level of the priority, and the value of the first priority is the sum of the value of the second priority and the priority adjustment parameter. Specifically, the value of the first priority is the sum of the value of the second priority and the priority adjustment amount indicated by the priority adjustment parameter.
  • the second device determines, according to the value of the first priority, whether to demodulate the service to be sent; or, whether to send feedback information of the service to be transmitted.
  • the second device determines whether to demodulate the to-be-transmitted service based on the value of the first priority of the to-be-transmitted service sent by the first device; or, the effect of whether to send the feedback information of the to-be-transmitted service can be referred to as shown in FIG. 4 . communication method. It will not be repeated here.
  • FIG. 6 is a third schematic flowchart of a communication method provided by an embodiment of the present application.
  • This communication method can be applied to the communication between any terminal devices in FIG. 2 .
  • the communication method aims to solve the problem of ensuring the priority of services of corresponding service types when services of different service types coexist.
  • 3GPP defines new service requirements in addition to the mechanism of reusing existing service requirements.
  • PQI refers to the sideline 5G QoS identifier (PC5 5QI: 5G QoS Identifier), that is, the identifier of the QoS defined by 5G on the sidelink.
  • the requirements for reliability of newly selected #4 and newly selected #5 in Table 1 are higher than the requirements of current ITS services.
  • the requirements of newly fetching #1 and newly fetching #2 in Table 2 are shorter than the ITS delay under the same packet error rate.
  • 3GPP has added new public safety services and commercial services for SL services. New service requirements are defined for new public safety services and commercial services. Compared with a single ITS business, the service requirements of the business are more. Based on business requirements, it is necessary to solve the problem of ensuring the priority of services of corresponding business types when services of different business types coexist.
  • the communication method includes the following steps:
  • the first device determines the service type of the service to be transmitted.
  • the above-mentioned first device may be any terminal device shown in FIG. 2 that requires SL communication.
  • the service type of the service to be transmitted may be one of a public safety service, a commercial service, and an ITS service.
  • public safety services refer to services that provide communication guarantees and services under extreme conditions such as fires, earthquakes, wars, and floods.
  • commercial services refer to services other than ITS services that are used for users to perform normal communication, such as voice, file transmission, data transmission, and the like.
  • S602 Determine characteristic information according to the service type.
  • S603 Send the first control information.
  • the first control information indicates feature information.
  • the feature information is used to determine, associate or identify the service type of the service to be transmitted.
  • the characteristic information is used to determine the transmission resource of the service to be transmitted.
  • different service types correspond to different characteristic information for determining the transmission resources of the service to be transmitted.
  • the physical layer can identify the service type of the service to be transmitted based on the characteristic information indicated by the first control information, so as to determine the transmission resources for the service to be transmitted that meet its service requirements, ensuring that Its communication efficiency and reliability.
  • the characteristic information may be the priority of the channel corresponding to the service to be transmitted.
  • S602 includes:
  • the priority association relationship includes the corresponding relationship between the priorities of each service and each channel under different service types.
  • the priority of the channel corresponding to the service to be transmitted is determined.
  • the priority of the channel corresponding to the service to be transmitted is the characteristic information.
  • the priority association relationship includes the corresponding relationship between the priorities of each service and each channel under the public safety service, and/or the corresponding relationship between each service and the priority of each channel under the commercial service, and/or Correspondence between each service of ITS service and the priority of each channel.
  • the priority of the channel is a positive integer between 1 and 8, and the level of the priority is negatively correlated with the value of the priority.
  • the priority association relationship may be: priority 1 of the channel corresponding to PS1 under the public safety service, priority 2 of the corresponding channel of PS2 under the public safety service, priority 4 of the corresponding channel of PS3 under the public safety service; ITS1 corresponds to channel priority 3, ITS2 under ITS service corresponds to channel priority 5; CS1 under commercial service corresponds to channel priority 6, CS2 under commercial service corresponds to channel priority 7, and CS3 under commercial service corresponds to Channel priority 8.
  • the channels include logical channels and/or MAC CEs.
  • the embodiments of the present application are not specifically limited.
  • the above-mentioned priority association relationship may be predefined by a signaling configuration or a protocol.
  • the embodiments of the present application are not specifically limited.
  • the above-mentioned priority association relationship corresponds to the priorities of different channels for each service under different service types, so that different priorities can be distinguished for different services.
  • the corresponding service needs to be sent, such as the service to be transmitted, by sending the first control information to indicate the corresponding feature information-priority in the physical layer, it is possible to determine the transmission suitable for the service requirements for different services. resources to ensure the required communication capabilities.
  • the above-mentioned first control information is realized by SCI.
  • the determined priority of the channel corresponding to the service to be transmitted is carried in the priority field information of the SCI and sent.
  • the physical layer can determine the corresponding transmission resource for it based on the specific value of the priority field information of the SCI.
  • the feature information may be: the number of bits of the first indication information included in the first control information, and/or the value of the second indication information included in the first control information.
  • different service types correspond to different bit numbers of the first indication information, and/or different service types correspond to different values of the second indication information.
  • the second indication information includes one or more of the following:
  • the extension bit information of the priority field information, the CRC scrambling sequence, the time-frequency resource position in the occupied time slot, or the reserved bit information is not limited.
  • Example 1 when the second indication information is a CRC scrambling sequence word, different service types correspond to different values of the second indication information, including:
  • the first service type corresponds to the first CRC scrambling sequence
  • the second service type corresponds to the second CRC scrambling sequence.
  • the CRC scrambling sequence is a string of binary or multi-ary scrambled bits added to the CRC with the same length as the CRC check bit.
  • the CRC scrambling sequence is also sometimes referred to as a radio network temporary identity (RNTI).
  • RNTI radio network temporary identity
  • the RNTI is used to identify the signal transmission between the UE and the network.
  • it may also be different values or states of the scrambled bits of the control information during transmission between UEs.
  • Example 2 when the second indication information includes the time-frequency resource location in the occupied time slot, different service types correspond to different values of the second indication information, including:
  • Different service types correspond to different time-frequency resource positions in the time slot occupied by the first control information.
  • the first service type corresponds to the first control information or the control channel carrying the first control information occupies the first time-frequency resource position
  • the second service type corresponds to the first control information or the control channel carrying the first control information occupies the first time-frequency resource position.
  • Time-frequency resource location the positions of the symbols in the occupied time slots may be different, or the positions in the frequency domain in the time slots may be different, or the positions in the time slot and the frequency domain may be different.
  • Example 3 when the second indication information includes reserved bit information, different service types correspond to different values of the second indication information, including:
  • the first service type corresponds to the first value of the reserved bit information
  • the second service type corresponds to the second value of the reserved bit information
  • the first control information is implemented by the SCI
  • the reserved bit information of the SCI is 1 bit
  • the first service type corresponds to a 1-bit (bit) binary number 1.
  • the second service type corresponds to 1-bit binary number 0.
  • Example 4 when the second indication information includes extended bit information of the priority field information, different service types correspond to different values of the second indication information, including:
  • the first service type corresponds to the first value of the extended bit information
  • the second service type corresponds to the second value of the extended bit information
  • the first control information is implemented by the SCI
  • the priority field information of the SCI is originally 3 bits
  • the priority field information of the SCI is extended by 1 bit to 4 bits.
  • the first service type corresponds to the binary number 1 of the extended bit information
  • the second service type corresponds to the binary number 0 of the extended bit information.
  • the first control information is implemented by the SCI
  • the priority field information of the SCI is originally 3 bits
  • the priority field information of the SCI is extended by 1 bit to 4 bits.
  • the priority of 4 bits has 16 states in total.
  • the included states are: 8 states from 0000 to 0111, and another 8 states from 1000 to 1111.
  • the service is a PS service or a commercial service
  • the priorities corresponding to the first eight states are the same as those of the ITS
  • the last eight states are the priorities of newly introduced or defined services.
  • the priority of its corresponding service can be higher than the first 8 types, or it can be compared according to preset rules or configured information. Some of the top 8 business priorities are higher.
  • the first indication information includes priority field information.
  • Different service types correspond to different bit numbers of the first indication information, including:
  • Different service types correspond to different bit numbers of priority field information.
  • the number of bits of the priority field information corresponding to the public safety service and/or the commercial service includes at least 4 bits
  • the number of bits of the priority field information corresponding to the ITS service includes 3 bits.
  • the public safety service and/or the commercial service can be distinguished by different values of the extended bit information, referring to the above example 4, which will not be repeated here.
  • different service types correspond to different characteristic information, such as different bit numbers of the first indication information, and/or different values of the second indication information.
  • the physical layer can distinguish the service type of the service to be transmitted based on the characteristic information, and can determine the service of the service to be transmitted in combination with the priority of the service in the first control information requirements, and provide them with appropriate communication capabilities.
  • 3GPP defines different priorities for services under each service type, and the value of the same priority corresponds to different service requirements under different service types. How the priority of the traffic is indicated is known to those skilled in the art.
  • the service type is further indicated by the feature information, and the physical layer can clarify the service requirement corresponding to the currently indicated priority under the service type, thereby providing the appropriate communication capability.
  • the above-mentioned first control information is realized by SCI.
  • the determined characteristic information is carried in the SCI and sent.
  • the physical layer can determine the corresponding transmission resource for it based on the specific value and characteristic information of the priority field information in the SCI. It should be further noted that, in the communication method shown in FIG. 6, services of different service types can be configured for transmission on the exact same or partially the same resource set (such as resource pool, carrier or bandwidth part), which may cause resource conflicts. risk.
  • the service to be transmitted may include the first service and the second service.
  • the priority of the first service is higher than the priority of the second service.
  • the first service is a service with a priority higher than the first priority threshold in the first service set, or the first service is all services in the first service set.
  • the second service is a service whose priority in the second service set is lower than the second priority threshold, or the second service is all the services in the second service set.
  • the first service set is a set of services under the first service type
  • the second service set is a set of services under the second service type.
  • the higher-priority services or all services under the first service type can be prioritized over lower-priority services under the second service type
  • the service or all services are transmitted, that is, the first service is transmitted prior to the second service, so as to avoid resource conflict between the first service and the second service.
  • the first priority threshold and the second priority threshold may be predefined by signaling configurations or protocols, which are not specifically limited in this embodiment of the present application.
  • the following example illustrates the process of handling the conflict by the physical layer when there is a service conflict.
  • the physical layer determines whether it belongs to the category of the first service based on the priority indicated by the first control information of service 1, and determines whether it belongs to the category of the second service based on the priority indicated by the first control information of service 2. If service 1 belongs to the category of the first service and service 2 belongs to the category of the second service, the physical layer can determine that the priority of service 1 is higher than that of service 2 based on the feature information corresponding to service 1 and the feature information corresponding to service 2 level, priority to transmit service 1. In other cases, the physical layer determines the transmission resource based on the priority of service 1 and service 2.
  • the feature information of the first service can be used not only to indicate the service type of the first service in the physical layer, but also to indicate the service type of the first service. Used to indicate that the priority of the first service is higher than the priority of the second service.
  • the feature information of the second service can be used not only to indicate the service type of the second service in the physical layer, but also to indicate that the priority of the second service is lower than the priority of the first service. Therefore, the physical layer determines to transmit the first service preferentially based on the characteristic information of the first service and the characteristic information of the second service, and can avoid resource conflict between the first service and the second service.
  • different service types correspond to different characteristic information, such as different bit numbers of the first indication information, and/or different values of the second indication information.
  • the physical layer can distinguish the service type of the service to be transmitted based on the characteristic information, and provide it with the appropriate communication capability in combination with the priority of the service in the first control information , to meet its service requirements.
  • the above-mentioned first control information is realized by SCI.
  • the determined characteristic information is carried in the SCI and sent.
  • the physical layer can determine the corresponding transmission resource for it based on the specific value and characteristic information of the priority field information in the SCI.
  • the first service may be a public safety service
  • the second service may be an intelligent transportation system ITS service or a commercial service.
  • the first service is a commercial service
  • the second service is an ITS service
  • the first service is an ITS service
  • the second service is a commercial service.
  • the first service is a sideline communication SL service
  • the second service is an uplink and downlink communication service.
  • different service types correspond to different characteristic information, such as different bit numbers of the first indication information, and/or different values of the second indication information.
  • the physical layer can distinguish the service type of the service to be transmitted based on the characteristic information, and combine the priority of the service to be transmitted to provide it with an appropriate communication capability to meet the needs of the service. required service needs.
  • the above-mentioned first control information is realized by SCI.
  • the characteristic information is carried in the SCI and sent.
  • the physical layer Based on the specific value of the characteristic information and priority field information indicated by the SCI, the physical layer provides the required transmission resources for the service to be transmitted.
  • the first service and the second service may use different resource selection methods.
  • the optional resource selection method reference may be made to the above term explanation part, which will not be repeated here.
  • the first service and the second service may use different transmission parameters, and these transmission parameters include one or more of the following: maximum number of retransmissions, maximum transmit power, synchronization source type, maximum Transmission bandwidth value, or minimum transmission bandwidth value, etc.
  • the first device may determine different transmission parameters for the first service and the second service according to the channel quality information.
  • the communication method shown in FIG. 6 may be implemented in combination with the communication methods shown in FIG. 4 and FIG. 5 .
  • the communication method shown in FIG. 4 when the service to be transmitted is differentiated by the feature information to obtain corresponding service requirements, the communication method shown in FIG. 4 can also be used to increase the value of the service to be transmitted.
  • the priority is carried, and the adjusted priority is carried in the first control information to be sent, so as to preempt resources for the service to be transmitted of the service type to better ensure its service requirements. It is also possible to lower the priority of the service to be transmitted through the communication method shown in FIG. 5, and send the adjusted priority in the first control information, so that the service to be transmitted of the service type is the service of the third device. Avoid resources to ensure the service demand of the third device.
  • the communication method shown in FIG. 6 may further be used to determine characteristic information based on the service type of the service to be transmitted, and indicate the characteristic information in the priority indication information, so as to facilitate Based on the feature information, the physical layer can distinguish the service types of the services to be transmitted and provide corresponding service requirements, thereby solving the problem of the priority of services of corresponding service types when services of different service types coexist.
  • the communication method provided by the embodiment of the present application has been described in detail above with reference to FIG. 2 to FIG. 6 .
  • a communication apparatus for executing the communication method provided by the embodiments of the present application will be described in detail below with reference to FIGS. 7 to 8 .
  • FIG. 7 is a first structural schematic diagram of a communication apparatus provided by an embodiment of the present application.
  • the communication apparatus 700 includes: a processing module 701 and a transceiver module 702 .
  • FIG. 7 only shows the main components of the communication device.
  • the communication apparatus 700 can be applied to the communication system shown in FIG. 2 to perform the function of the first device in the communication method shown in FIG. 4 .
  • the processing module 701 is configured to determine the value of the first priority of the service to be transmitted and the priority adjustment parameter.
  • the processing module 701 is further configured to determine the value of the second priority according to the value of the first priority and the priority adjustment parameter, and the second priority is higher than the first priority.
  • the transceiver module 702 is used for sending priority indication information.
  • the priority indication information includes the value of the second priority.
  • the service to be transmitted includes at least one MAC CE and/or at least one logical channel, each MAC CE corresponds to a priority, each logical channel corresponds to a priority, and the first priority is at least one MAC CE and/or Highest priority in at least one logical channel.
  • the value of the priority is negatively related to the level of the priority, the second priority is higher than the first priority, and the value of the second priority is the value of the first priority and the priority. Adjust the difference of parameters.
  • the value of the priority is positively related to the level of the priority, the second priority is higher than the first priority, and the value of the second priority is the sum of the value of the first priority and the priority adjustment parameter.
  • the priority adjustment parameter is determined by signaling configuration, protocol pre-definition, or the communication apparatus 700 itself.
  • the priority adjustment parameter is determined by the channel quality information and/or the first priority.
  • the priority adjustment parameters are determined by channel quality information.
  • the priority adjustment parameter is determined by the first priority.
  • the priority adjustment parameter is configured to be associated with the channel quality parameter information and/or the first priority information.
  • the processing module 701 is further configured to determine the second priority according to the first priority and the priority adjustment parameter if the target condition is satisfied.
  • the target conditions include one or more of the following:
  • the priority adjustment function of the communication device 700 has been activated.
  • the first priority is higher than the first threshold.
  • the signal quality information detected by the communication apparatus 700 on the resource pool is lower than the second threshold.
  • the resource occupancy rate of the resource pool corresponding to the communication apparatus 700 is less than or equal to the occupancy rate threshold.
  • the service period of the service to be transmitted is greater than or equal to the period threshold.
  • the traffic volume of the communication device 700 is less than or equal to the quantity threshold.
  • the communication device 700 operates in a power saving mode.
  • the processing module 701 is further configured to determine the first priority as the second priority if the target condition is not met.
  • the first threshold is determined by the resource selection manner and/or the transmission mode of the communication apparatus 700 .
  • the second threshold is determined by the resource selection method and/or the transmission mode.
  • the resource selection method includes any one of the following: a random resource selection method, a partially perceived resource selection method, and a fully perceived resource selection method.
  • the transmission mode includes any one of the following: the mode based on the ITS service of the intelligent transportation system, the mode based on the public safety service, and the mode based on the commercial service.
  • the priority indication information further includes a priority adjustment parameter.
  • the priority indication information is the sideline control information SCI sent by the communication device 700, and the value of the second priority and/or the priority adjustment parameter are carried in the sideline control information SCI.
  • the processing module 701 is further configured to determine the transmission resource of the service to be transmitted according to the value of the second priority.
  • the communication apparatus 700 may be applied to the communication system shown in FIG. 2 to perform the function of the second device in the communication method shown in FIG. 4 .
  • the transceiver module 702 is configured to receive priority indication information of the service to be transmitted.
  • the priority indication information includes the value of the second priority.
  • the processing module 701 is configured to determine the value of the first priority according to the value of the second priority and the priority adjustment parameter.
  • the processing module 701 is further configured to determine, according to the value of the first priority, whether to demodulate the data to be sent; or, whether to send feedback information of the service to be transmitted.
  • the value of the priority is negatively correlated with the level of the priority
  • the value of the first priority is the sum of the value of the second priority and the priority adjustment parameter.
  • the value of the priority is positively related to the level of the priority, and the value of the first priority is the difference between the value of the second priority and the priority adjustment parameter.
  • the communication apparatus 700 can be applied to the communication system shown in FIG. 2 to perform the function of the first device in the communication method shown in FIG. 5 .
  • the processing module 701 is configured to determine the value of the first priority of the service to be transmitted and the priority adjustment parameter.
  • the processing module 701 is further configured to determine the value of the second priority according to the value of the first priority and the priority adjustment parameter, and the second priority is lower than the first priority.
  • the transceiver module 702 is used for sending priority indication information.
  • the priority indication information includes the value of the second priority.
  • the service to be transmitted includes at least one MAC CE and/or at least one logical channel, each MAC CE corresponds to a priority, each logical channel corresponds to a priority, and the first priority is at least one MAC CE and/or Highest priority in at least one logical channel.
  • the value of the priority is negatively correlated with the level of the priority
  • the value of the second priority is the sum of the value of the first priority and the priority adjustment parameter.
  • the value of the priority is positively related to the level of the priority
  • the value of the second priority is the difference between the value of the first priority and the priority adjustment amount indicated by the priority adjustment parameter.
  • the priority adjustment parameter is determined by signaling configuration, protocol pre-definition, or the communication apparatus 700 itself.
  • the priority adjustment parameter is determined by the channel quality information and/or the first priority.
  • the priority adjustment parameters are determined by channel quality information.
  • the priority adjustment parameter is determined by the first priority.
  • the priority adjustment parameter is configured to be associated with the channel quality parameter information and/or the first priority information.
  • the processing module 701 is further configured to determine the second priority according to the first priority and the priority adjustment parameter if the target condition is satisfied.
  • the target conditions include one or more of the following:
  • the priority adjustment function of the communication device 700 has been activated.
  • the first priority is lower than the first threshold.
  • the signal quality information detected by the communication apparatus 700 on the resource pool is lower than the second threshold.
  • the resource occupancy rate of the resource pool corresponding to the communication apparatus 700 is less than or equal to the occupancy rate threshold.
  • the service period of the service to be transmitted is greater than or equal to the period threshold.
  • the traffic volume of the communication device 700 is less than or equal to the quantity threshold.
  • the communication device 700 operates in a power saving mode.
  • the processing module 701 is further configured to determine the first priority as the second priority if the target condition is not met.
  • the first threshold is determined by the resource selection manner and/or the transmission mode of the communication apparatus 700 .
  • the second threshold is determined by the resource selection method and/or the transmission mode.
  • the resource selection method includes any one of the following: a random resource selection method, a partially perceived resource selection method, and a fully perceived resource selection method.
  • the transmission mode includes any one of the following: a mode based on an intelligent transportation system ITS service, a mode based on a public safety service, and a mode based on a commercial service.
  • the priority indication information further includes a priority adjustment parameter.
  • the priority indication information is the sideline control information SCI sent by the communication device 700, and the value of the second priority and/or the priority adjustment parameter are carried in the sideline control information SCI.
  • the processing module 701 is further configured to determine the transmission resource of the service to be transmitted according to the value of the second priority.
  • the communication apparatus 700 can be applied to the communication system shown in FIG. 2 to perform the function of the third device in the communication method shown in FIG. 5 .
  • the transceiver module 702 is configured to receive priority indication information of the service to be transmitted.
  • the priority indication information includes the value of the second priority.
  • the processing module 701 is configured to determine the value of the first priority according to the value of the second priority and the priority adjustment parameter.
  • the processing module 701 is further configured to determine, according to the value of the first priority, whether to demodulate the data to be sent; or, whether to send feedback information of the service to be transmitted.
  • the value of the priority is negatively correlated with the level of the priority
  • the value of the first priority is the difference between the value of the second priority and the priority adjustment parameter.
  • the value of the priority is positively related to the level of the priority, and the value of the first priority is the sum of the value of the second priority and the priority adjustment parameter.
  • the communication apparatus 700 may be applied to the communication system shown in FIG. 2 to perform the function of the first device in the communication method shown in FIG. 6 .
  • the processing module 701 is configured to determine the service type of the service to be transmitted.
  • the processing module 701 is further configured to determine characteristic information according to the service type.
  • the transceiver module 702 is configured to send the first control information.
  • the first control information indicates feature information.
  • the processing module 701 is further configured to obtain the priority association relationship.
  • the priority association relationship includes the corresponding relationship between the priorities of each service and each channel under different service types. Based on the relationship between the service type and the priority, the priority of the channel corresponding to the service to be transmitted is determined. The priority of the channel corresponding to the service to be transmitted is characteristic information.
  • the feature information includes: the number of bits of the first indication information included in the first control information, and/or the value of the second indication information included in the first control information.
  • different service types correspond to different bit numbers of the first indication information.
  • Different service types correspond to different values of the second indication information.
  • the channels include logical channels and/or MAC CEs.
  • the priority association is predefined by a signaling configuration or a protocol.
  • the second indication information includes one or more of the following: extended bit information of the priority field information, a CRC scrambling sequence, a time-frequency resource position in an occupied time slot, or reserved bit information.
  • the second indication information includes reserved bit information
  • different service types correspond to different values of the second indication information, including: the first service type corresponds to the first value of the reserved bit information.
  • the second service type corresponds to the second value of the reserved bit information.
  • the second indication information includes the extended bit information of the priority field information
  • different service types correspond to different values of the second indication information, including: the first service type corresponds to the first value of the extended bit information.
  • the second service type corresponds to the second value of the extended bit information.
  • the first indication information includes priority field information.
  • the service type includes public safety service, ITS service, or commercial service.
  • the number of bits of the priority field information corresponding to the public safety service and/or the commercial service includes at least 4 bits, and the number of bits of the priority field information corresponding to the ITS service includes 3 bits.
  • the service to be transmitted includes the first service and the second service.
  • the priority of the first service is higher than the priority of the second service.
  • the first service is a service with a priority higher than the first priority threshold in the first service set, or the first service is all services in the first service set.
  • the second service is a service whose priority in the second service set is lower than the second priority threshold, or the second service is all the services in the second service set.
  • the first service set is a set of services under the first service type
  • the second service set is a set of services under the second service type.
  • the first service is a public safety service
  • the second service is an intelligent transportation system ITS service or a commercial service.
  • the first service is a commercial service
  • the second service is an ITS service
  • the first service is an ITS service
  • the second service is a commercial service.
  • the first service is a sideline communication SL service
  • the second service is an uplink and downlink communication service.
  • services of different service types can be configured on the same or partially the same sending resource set.
  • the transceiver module 702 may include a receiving module and a transmitting module (not shown in FIG. 7 ).
  • the transceiver module 702 is used to implement the sending function and the receiving function of the communication device 700 .
  • the communication apparatus 700 may further include a storage module (not shown in FIG. 7 ), where the storage module stores programs or instructions.
  • the processing module 701 executes the program or instruction, the communication apparatus 700 can perform the functions of the first device and the third device in the communication method shown in FIG. 4 , and the first device and the third device in the communication method shown in FIG. 5 .
  • the processing module 701 involved in the communication device 700 may be implemented by a processor or a processor-related circuit component, and may be a processor or a processing unit;
  • the transceiver module 702 may be implemented by a transceiver or a transceiver-related circuit component, and may be a transceiver module Receiver or Transceiver Unit.
  • the communication device 700 may be the first device, or may be a chip (system) or other components or components that can be provided in the first device, or may include The device of the first device is not limited in this application. If the communication device 700 performs the function of the third device, the communication device 700 may be the third device, or may be a chip (system) or other components or components that can be provided in the third device, or may be a device including the first device , which is not limited in this application. In addition, for the technical effect of the communication apparatus 700, reference may be made to the technical effect of the communication method shown in FIG. 4-FIG. 6, which will not be repeated here.
  • FIG. 8 is a second schematic structural diagram of a communication apparatus provided by an embodiment of the present application.
  • the communication apparatus may be the first device, or may be a chip (system) or other components or assemblies that may be provided in the first device.
  • the communication apparatus 800 may include a processor 801 .
  • the communication apparatus 800 may further include a memory 802 and/or a transceiver 803 .
  • the processor 801 is coupled with the memory 802 and the transceiver 803, such as can be connected through a communication bus.
  • the processor 801 is the control center of the communication device 800, which may be one processor, or may be a general term for multiple processing elements.
  • the processor 801 is one or more central processing units (CPUs), may also be a specific integrated circuit (application specific integrated circuit, ASIC), or is configured to implement one or more of the embodiments of the present application
  • An integrated circuit such as: one or more microprocessors (digital signal processor, DSP), or, one or more field programmable gate array (field programmable gate array, FPGA).
  • the processor 801 may execute various functions of the communication device 800 by running or executing software programs stored in the memory 802 and calling data stored in the memory 802 .
  • the processor 801 may include one or more CPUs, such as CPU0 and CPU1 shown in FIG. 8 .
  • the communication apparatus 800 may also include multiple processors, for example, the processor 801 and the processor 804 shown in FIG. 2 .
  • processors can be a single-core processor (single-CPU) or a multi-core processor (multi-CPU).
  • a processor herein may refer to one or more devices, circuits, and/or processing cores for processing data (eg, computer program instructions).
  • the memory 802 is used for storing the software program for executing the solution of the present application, and the execution is controlled by the processor 801.
  • the processor 801. For the specific implementation, reference may be made to the above method embodiments, which will not be repeated here.
  • memory 802 may be a read-only memory (ROM) or other type of static storage device that can store static information and instructions, random access memory (RAM), or a random access memory (RAM) or other type of static storage device that can store information and instructions.
  • ROM read-only memory
  • RAM random access memory
  • RAM random access memory
  • RAM random access memory
  • RAM random access memory
  • Other types of dynamic storage devices for instructions which may also be electrically erasable programmable read-only memory (EEPROM), compact disc read-only memory (CD-ROM), or other optical disks storage, optical disc storage (including compact disc, laser disc, optical disc, digital versatile disc, blu-ray disc, etc.), magnetic disk storage medium or other magnetic storage device, or capable of carrying or storing desired program code in the form of instructions or data structures and any other medium that can be accessed by a computer, but is not limited thereto.
  • the memory 802 may be integrated with the processor 801, or may exist independently, and be coupled to the processor 801 through an interface circuit (not shown in FIG. 8)
  • the transceiver 803 is used for communication with other communication devices.
  • the communication apparatus 800 is a terminal device, and the transceiver 803 may be used to communicate with a network device or communicate with another terminal device.
  • the communication apparatus 800 is a network device, and the transceiver 803 may be used to communicate with a terminal device or communicate with another network device.
  • the transceiver 803 may include a receiver and a transmitter (not shown separately in FIG. 8). Among them, the receiver is used to realize the receiving function, and the transmitter is used to realize the sending function.
  • the transceiver 803 may be integrated with the processor 801, or may exist independently, and be coupled to the processor 801 through an interface circuit (not shown in FIG. 8 ) of the communication device 800, which is not performed in this embodiment of the present application Specific restrictions.
  • the structure of the communication device 800 shown in FIG. 8 does not constitute a limitation of the communication device, and an actual communication device may include more or less components than those shown in the figure, or combine some components, or Different component arrangements.
  • Embodiments of the present application provide a communication system.
  • the communication system includes the above-mentioned first device, second device and third device.
  • the communication system may also include network equipment.
  • processors in the embodiments of the present application may be a central processing unit (central processing unit, CPU), and the processor may also be other general-purpose processors, digital signal processors (digital signal processors, DSP), dedicated integrated Circuit (application specific integrated circuit, ASIC), off-the-shelf programmable gate array (field programmable gate array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc.
  • a general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
  • the memory in the embodiments of the present application may be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically programmable Erase programmable read-only memory (electrically EPROM, EEPROM) or flash memory.
  • Volatile memory may be random access memory (RAM), which acts as an external cache.
  • RAM random access memory
  • SRAM static random access memory
  • DRAM dynamic random access memory
  • DRAM synchronous dynamic random access memory
  • SDRAM synchronous dynamic random access memory
  • DDR SDRAM double data rate synchronous dynamic random access memory
  • enhanced SDRAM enhanced synchronous dynamic random access memory
  • SLDRAM synchronous connection dynamic random access memory Fetch memory
  • direct memory bus random access memory direct rambus RAM, DR RAM
  • the above embodiments may be implemented in whole or in part by software, hardware (eg, circuits), firmware, or any other combination.
  • the above-described embodiments may be implemented in whole or in part in the form of a computer program product.
  • the computer program product includes one or more computer instructions or computer programs. When the computer instructions or computer programs are loaded or executed on a computer, all or part of the processes or functions described in the embodiments of the present application are generated.
  • the computer may be a general purpose computer, special purpose computer, computer network, or other programmable device.
  • the computer instructions may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be downloaded from a website site, computer, server, or data center Transmission to another website site, computer, server or data center by wire (eg, infrared, wireless, microwave, etc.).
  • the computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server, a data center, or the like that contains one or more sets of available media.
  • the usable media may be magnetic media (eg, floppy disks, hard disks, magnetic tapes), optical media (eg, DVDs), or semiconductor media.
  • the semiconductor medium may be a solid state drive.
  • At least one means one or more, and “plurality” means two or more.
  • At least one item(s) below” or similar expressions thereof refer to any combination of these items, including any combination of single item(s) or plural items(s).
  • at least one item (a) of a, b, or c can represent: a, b, c, a-b, a-c, b-c, or a-b-c, where a, b, c may be single or multiple .
  • the size of the sequence numbers of the above-mentioned processes does not mean the sequence of execution, and the execution sequence of each process should be determined by its functions and internal logic, and should not be dealt with in the embodiments of the present application. implementation constitutes any limitation.
  • the disclosed system, apparatus and method may be implemented in other manners.
  • the apparatus embodiments described above are only illustrative.
  • the division of the units is only a logical function division. In actual implementation, there may be other division methods.
  • multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not implemented.
  • the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution in this embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit.
  • the functions, if implemented in the form of software functional units and sold or used as independent products, may be stored in a computer-readable storage medium.
  • the technical solution of the present application can be embodied in the form of a software product in essence, or the part that contributes to the prior art or the part of the technical solution, and the computer software product is stored in a storage medium, including Several instructions are used to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present application.
  • the aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), magnetic disk or optical disk and other media that can store program codes .

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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 concerne un procédé et un appareil de communication, qui peuvent résoudre le problème technique selon lequel des exigences d'économie d'énergie et de performance de transmission de données d'un dispositif à capacité de détection limitée ne peuvent pas être prises en compte, ce qui permet d'améliorer l'efficacité de communication et la fiabilité du dispositif à capacité de détection limitée, et d'être appliqué à des systèmes tels que V2X, 5G et 4G. Le procédé consiste : à déterminer, au moyen d'un premier dispositif, une première valeur de priorité et un paramètre de réglage de priorité d'un service à transmettre ; à déterminer une seconde valeur de priorité en fonction de la première valeur de priorité et du paramètre de réglage de priorité ; et à envoyer des informations d'indication de priorité, les informations d'indication de priorité comprenant la seconde valeur de priorité.
PCT/CN2021/072316 2021-01-15 2021-01-15 Procédé et appareil de communication WO2022151431A1 (fr)

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