WO2022151431A1

WO2022151431A1 - Communication method and apparatus

Info

Publication number: WO2022151431A1
Application number: PCT/CN2021/072316
Authority: WO
Inventors: 黎超; 杨帆; 张天虹; 黄海宁
Original assignee: 华为技术有限公司
Priority date: 2021-01-15
Filing date: 2021-01-15
Publication date: 2022-07-21

Abstract

The present application provides a communication method and apparatus, capable of solving the technical problem that power saving requirements and data transmission performance of a sensing capability limited device cannot be taken into account, thereby improving the communication efficiency and reliability of the sensing capability limited device, and being applied to systems such as V2X, 5G, and 4G. The method comprises: a first device determining a first priority value and a priority adjustment parameter of a service to be transmitted; determining a second priority value according to the first priority value and the priority adjustment parameter; and sending priority indication information, the priority indication information comprising the second priority value.

Description

Communication method and device

technical field

The present application relates to the field of communication, and in particular, to a communication method and device.

Background technique

At present, 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. Among them, the 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.

Specifically, a fully sensing device, such as user equipment (UE) defined in R16, can sense and avoid resources occupied by other devices to reduce resource conflicts and signal interference, thereby improving communication efficiency and reliability sex. However, the above sensing operation needs to consume a lot of power, so that the power consumption of the terminal device remains high. In order to reduce power consumption, devices with limited sensing capabilities are introduced, such as partial sensing devices or non-sensing devices defined in R17. Among them, 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.

SUMMARY OF THE INVENTION

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.

To achieve the above object, the application adopts the following technical solutions:

In a first aspect, a communication method is provided. The 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. The priority indication information includes the value of the second priority.

Based on the communication method provided in the first aspect, the first device, such as a device with limited sensing capability, 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.

Based on the communication method provided in the first aspect, the first device, such as a fully aware 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. In this way, the technical problem that the power saving requirement and the data transmission performance of the device with limited perception capability cannot be taken into account can be solved, thereby improving the communication efficiency and reliability of the device with limited perception capability.

Exemplarily, 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, each MAC CE corresponds to a priority, and 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. In this way, for a transport block TB of a service to be transmitted that is transmitted from the MAC layer to the physical layer, 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.

In a possible design solution, 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. Alternatively, 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. Alternatively, 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. In this way, 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.

Optionally, the priority adjustment parameter is configured by signaling, predefined by a protocol, or determined by the first device. In this way, multiple configuration modes of the priority adjustment parameters are provided. 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.

Optionally, the priority adjustment parameter is determined by the channel quality information and/or the first priority.

As an example, the priority adjustment parameters are determined by channel quality information. In this example, the better the channel quality is, the more idle the channel in the resource pool is, and more resources are available. 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. .

As one example, the priority adjustment parameter is determined by the first priority. In this example, 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.

Optionally, the priority adjustment parameter is configured to be associated with the channel quality information and/or the first priority information. In this way, the first device can quickly determine the priority adjustment parameter based on the configuration.

In a possible design solution, 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:

Exemplarily, the priority adjustment function of the first device has been activated. In this way, 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.

Exemplarily, the signal quality information detected by the first device on the resource pool is lower than the second threshold. Or, the resource occupancy rate of the resource pool corresponding to the first device is less than or equal to the occupancy rate threshold. Or, the service period of the service to be transmitted is greater than or equal to the period threshold. Or, 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.

Exemplarily, 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.

In another possible design solution, if the target condition is not met, the first priority is determined as the second priority. For the effect, reference may be made to the effect satisfying the target condition, which will not be repeated here.

Further, 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.

In a possible design solution, the priority indication information further includes a priority adjustment parameter. In this way, 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.

In a possible design solution, 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. In this way, when 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.

In a possible design solution, 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.

In a second aspect, a communication method is provided. The 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.

Based on the communication method provided in the second aspect, 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.

In a possible design scheme, 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. Alternatively, 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. Alternatively, 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. Alternatively, 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. In this way, 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.

In a third aspect, a communication method is provided. The 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. Send first control information. The first control information indicates feature information. In this way, different service types correspond to different characteristic information for determining the transmission resource of the service to be transmitted. By sending the first control information to indicate the characteristic information, 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.

In a possible design solution, 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. In this example, 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.

In another possible design solution, 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. Wherein, 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. In this way, by sending the first control information to indicate the characteristic information in the physical layer, the physical layer can determine 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 its service needs.

Illustratively, the channels include logical channels and/or MAC CEs. In this example, two channels with configurable priority are provided. During the implementation process, 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.

Illustratively, the priority association is predefined by a signaling configuration or a protocol. In this way, multiple configuration modes of the priority association relationship are provided. During the implementation process, an appropriate mode can be selected from among the multiple configuration modes to configure the priority association relationship according to actual requirements.

Optionally, 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. In this way, 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.

Exemplarily, 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.

Exemplarily, when 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.

Optionally, the first indication information includes priority field information.

Illustratively, 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.

Further, 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, and the second service set is a set of services under the second service type. In this example, when two services under the first service type and the second service type conflict, 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.

Exemplarily, the first service is a public safety service, and the second service is an ITS service or a commercial service. In this way, when a resource conflict occurs between a public safety service and an ITS service, or a resource conflict occurs between a public safety service and a commercial service, all or part of the higher priority public safety service can be preferentially transmitted, and resource conflict can be avoided.

Exemplarily, the first service is a commercial service, and the second service is an ITS service. In this way, in the case of resource conflict between commercial services and ITS services, 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.

Exemplarily, the first service is an ITS service, and the second service is a commercial service. In this way, in the scenario of resource conflict between commercial services and ITS services, 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.

Exemplarily, the first service is a sideline communication SL service, and the second service is an uplink and downlink communication service. In this way, in the case of resource conflict between the SL service and the uplink and downlink communication services, 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.

In a possible design solution, services of different service types can be configured on the same or partially the same sending resource set.

In a fourth aspect, a communication device is provided. The communication device 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.

Exemplarily, 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.

In a possible design solution, 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. Alternatively, 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. Alternatively, 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.

Optionally, 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. Optionally, the priority adjustment parameter is determined by the channel quality information and/or the first priority.

As an example, the priority adjustment parameters are determined by channel quality information.

As one example, the priority adjustment parameter is determined by the first priority.

Optionally, the priority adjustment parameter is configured to be associated with the channel quality information and/or the first priority.

In a possible design solution, 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:

Exemplarily, the priority adjustment function of the communication device has been activated.

Exemplarily, the signal quality information detected by the communication device on the resource pool is lower than the second threshold. Or, the resource occupancy rate of the resource pool corresponding to the communication device is less than or equal to the occupancy rate threshold. Or, the service period of the service to be transmitted is greater than or equal to the period threshold. Alternatively, the traffic volume of the communication device is less than or equal to the quantity threshold.

Exemplarily, the communication device operates in a power saving mode.

In another possible design solution, if the target condition is not met, the first priority is determined as the second priority.

Further, 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.

In a possible design solution, the priority indication information further includes a priority adjustment parameter.

In a possible design solution, 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.

In a possible design solution, 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.

Optionally, 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.

Optionally, the communication apparatus of the fourth aspect may further include a storage module, where the storage module stores programs or instructions. When the processing module executes the program or the instruction, the communication apparatus can execute the communication method of the first aspect.

It should be noted that 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.

In addition, for the technical effect of the communication apparatus of the fourth aspect, reference may be made to the technical effect of the communication method of the first aspect, which will not be repeated here.

In a fifth aspect, a communication device is provided. The communication device 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.

In a possible design scheme, 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. Alternatively, 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. Alternatively, 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. Alternatively, 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.

Optionally, 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.

Optionally, the communication device of the fifth aspect may further include a storage module, where the storage module stores programs or instructions. When the processing module executes the program or the instruction, the communication apparatus can execute the communication method of the second aspect.

It should be noted that 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.

In addition, for the technical effect of the communication apparatus of the fifth aspect, reference may be made to the technical effect of the communication method of the second aspect, which will not be repeated here.

In a sixth aspect, a communication device is provided. The communication device includes: a processing module and a transceiver module. Among them, 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.

In a possible design solution, 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.

In another possible design solution, 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. Wherein, 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.

Optionally, 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.

Further, 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, and the second service set is a set of services under the second service type.

Exemplarily, the first service is a public safety service, and the second service is an ITS service or a commercial service.

Exemplarily, the first service is a commercial service, and the second service is an ITS service.

Exemplarily, the first service is an ITS service, and the second service is a commercial service.

Exemplarily, the first service is a sideline communication SL service, and the second service is an uplink and downlink communication service.

Optionally, 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.

Optionally, the communication apparatus of the sixth aspect may further include a storage module, where the storage module stores programs or instructions. When the processing module executes the program or the instruction, the communication device can execute the communication method of the third aspect.

It should be noted that 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.

In addition, for the technical effect of the communication device of the sixth aspect, reference may be made to the technical effect of the communication method of the third aspect, which will not be repeated here.

In a seventh aspect, a communication device is provided. The communication apparatus is configured to perform the communication method of any one of the first aspect, the second aspect, or the third aspect.

It should be understood that 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.

In addition, for the technical effect of the communication apparatus of the seventh aspect, reference may be made to the technical effect of the communication method of the first aspect, the second aspect, or the third aspect, which will not be repeated here.

In an eighth aspect, a communication device is provided. The communication apparatus includes: a processor configured to execute the communication method of any one of the first aspect, the second aspect, or the third aspect.

In a possible design solution, 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.

In a possible design solution, 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.

In the present application, 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.

In addition, for the technical effect of the communication apparatus in the eighth aspect, reference may be made to the technical effect of the communication method in any one of the first aspect, the second aspect, or the third aspect, which will not be repeated here.

In a ninth aspect, a communication device is provided. The communication device 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.

In a possible design solution, 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.

In this application, 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.

In addition, for the technical effect of the communication apparatus of the ninth aspect, reference may be made to the technical effect of the communication method of any one of the first aspect, the second aspect, or the third aspect, which will not be repeated here.

A tenth aspect provides a processor. Wherein, the processor is configured to execute the communication method of any one of the first aspect, the second aspect, or the third aspect.

In an eleventh aspect, a communication system is provided. The communication system includes the first device and the third device of the above-mentioned first aspect, and the second device of the above-mentioned second aspect. Optionally, 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. 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.

Description of drawings

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;

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.

Detailed ways

First, the technical terms involved in the embodiments of the present application are briefly explained.

1. Sidelink (SL): The communication link between the terminal device and the terminal device through the device to device (device to device, D2D) mode for direct communication.

It should be noted that the D2D mode can be applied to V2X communication. Among them, 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.

2. Sidelink control information (SCI): used to carry the demodulation information required to demodulate the data transmitted by the SL, such as modulation and coding scheme (MCS), time-frequency resource location, priority The terminal equipment at the receiving end obtains the time-frequency resource position by detecting the SCI, and receives data at the corresponding time-frequency resource position. Feasible, the sidelink control information is carried in a physical sidelink control channel (PSCCH).

3. Random resource selection (random selection) is a resource selection method in mode 2 (mode 2) defined by the 3GPP (3rd generation partnership project) protocol for NR-V2X. When 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. For example, a non-sensing device may be a device that has sensing capability but does not perform sensing operations under certain conditions. For another example, 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.

4. Partial sensing is another resource selection method in Mode 2 defined by 3GPP protocol for NR-V2X. When 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. For example, a partial sensing device may be a device that has full sensing capability but performs partial sensing operations under certain conditions. For another example, the partial sensing device may be the partial sensing device defined in R17.

It should be noted that non-sensing devices and partial sensing devices are collectively referred to as devices with limited sensing capabilities.

5. Full sensing is another resource selection method under Mode 2 defined by the 3GPP protocol for NR-V2X. When 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. For example, the fully aware device may be the user equipment defined in R16. A fully aware device may be a fully aware device in R17.

It should be noted that in NR-V2X, multiple transmission modes are introduced, for example, Mode 1 and Mode 2. The 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.

6. 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.

7. Priority refers to the priority of the business.

Optionally, 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. Optionally, 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.

It should be noted that 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. For example, 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.

Optionally, 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. Optionally, each MAC CE corresponds to a priority, and each logical channel corresponds to a priority. Optionally, 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.

8. Signaling configuration.

In the present invention, 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. Optionally, 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. Further optionally, 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. Optionally, 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.

Exemplarily, 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. Among them, device 1 and device 2 are both fully aware devices. Referring to FIG. 1, the device 1 can indicate the service priority through a 3-bit (bit) priority field in the SCI1. 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 3, then the service priority of device 1 is higher than that of the device 2 business priorities. In other words, if 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. 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.

However, when a device with limited perception capability is introduced, resource conflicts and interference problems may occur, resulting in a significant decrease in the performance of the entire system. The following describes in detail with examples.

Illustratively, please refer to FIG. 1 , device 1 is a fully aware device, and device 2 is a non-aware device. When 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.

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 3, 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 with resource 2 occupied by device 2, device 1 will continue to occupy resource 1, and device 2 cannot avoid resource 2 because it cannot monitor that resource 2 is occupied by device 1. lead to resource conflicts and signal interference.

Illustratively, referring to FIG. 1 , device 1 is a fully aware device, and device 2 is a partially aware device. When 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.

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.

Illustratively, please refer to FIG. 1 , device 1 is a partial sensing device, and device 2 is a non-sensing device. When 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.

When device 1 communicates with device 2, if the service priority of device 1 is higher than the service priority of device 2. At this time, if resource 1 occupied by device 1 overlaps resource 2 occupied by device 2, even if device 1 can monitor that resource 2 is occupied by device 2, device 1 will not avoid it, and device 2 cannot monitor that resource 1 is occupied by device 2. Equipment 1 is occupied, and naturally cannot be avoided, thereby causing resource conflicts and signal interference.

In addition, if the service priority of device 1 is lower than the service priority of device 2, and if resource 2 is not within the monitoring range of device 1, device 1 will not be able to monitor that resource 2 is occupied by device 2 and cannot avoid it, which will also lead to Resource conflict and signal interference.

It should be noted that in a communication scenario involving a device with limited sensing capability, there are many situations in which resource conflict and signal interference exist, which are not limited to the above examples, and will not be listed one by one here.

The technical solutions in the present application will be described below with reference to the accompanying drawings.

The technical solutions of the embodiments of the present application can be applied to various communication systems, such as a wireless fidelity (WiFi) system, a vehicle-to-everything (V2X) communication system, and a device-todevie (D2D) communication system. Communication systems, Internet of Vehicles communication systems, 4th generation (4G) mobile communication systems, such as long term evolution (LTE) systems, worldwide interoperability for microwave access (WiMAX) communication systems, 5th generation (5G) mobile communication systems, such as new radio (NR) systems, and future communication systems, such as 6th generation (6G) mobile communication systems.

This application will present various aspects, embodiments, or features around a system that may include a plurality of devices, components, modules, and the like. It is to be understood and appreciated that the various systems may include additional devices, components, modules, etc., and/or may not include all of the devices, components, modules, etc. discussed in connection with the figures. In addition, combinations of these schemes can also be used.

In addition, in the embodiments of the present application, words such as "exemplarily" and "for example" are used to represent examples, illustrations or illustrations. Any embodiment or design described in this application as "exemplary" should not be construed as preferred or advantageous over other embodiments or designs. Rather, the use of the word example is intended to present a concept in a concrete way.

In the embodiments of the present application, "information", "signal", "message", "channel", and "signaling" may sometimes be used interchangeably. It should be noted that, When not emphasizing their differences, their intended meanings are the same. "of", "corresponding, relevant" and "corresponding" can sometimes be used interchangeably. It should be pointed out that when the difference is not emphasized, the meanings they intend to express are the same.

In the embodiments of the present application, sometimes a subscript such as W1 may be mistakenly written in a non-subscript form such as W1. When the difference is not emphasized, the meaning to be expressed is the same.

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.

To facilitate understanding of the embodiments of the present application, firstly, a communication system applicable to the embodiments of the present application is described in detail by taking the communication system shown in FIG. 2 as an example. Exemplarily, 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.

As shown in FIG. 2 , 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.

Optionally, 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.

It should be understood that 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.

Wherein, 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. 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 group (including multiple antenna panels) antennas of a base station in a 5G system The panel, alternatively, can also be a network node that constitutes a gNB or a transmission point, such as a baseband unit (BBU), or a distributed unit (DU), a roadside unit (RSU) with base station functions, etc. .

It should be noted that 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. For example, autonomous resource selection is performed in the same resource pool to implement SL communication. For the specific implementation between the terminal device 210 and the terminal device 220, reference may be made to the following method embodiments, which will not be repeated here.

It should be noted that the solutions in the embodiments of the present application may also be applied to other communication systems, and the corresponding names may also be replaced by the names of corresponding functions in other communication systems.

The communication method provided by the embodiment of the present application will be described in detail below with reference to FIG. 3 to FIG. 6 .

Exemplarily, 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 . As shown in Figure 4, the communication method includes the following steps:

S401, the first device determines a value of a first priority of a service to be transmitted and a priority adjustment parameter.

In this embodiment, the first device, as the assisted party of the transmission resources, requests the third device to avoid the transmission resources occupied (reserved) by the first device by increasing the priority of its own service.

In an implementation manner, the first device may be the above-mentioned device with limited sensing capability. For details, reference may be made to the above-mentioned term explanation part, which will not be repeated here.

In another embodiment, when a fully aware device needs reliable communication capabilities and service requirements in a specific scenario, for example, a scenario in which high-priority and low-latency services are transmitted, this communication method can also ensure its own communication efficiency. and reliability. At this time, 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.

It should be understood that the first device may be any terminal device shown in FIG. 2 . 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. It should be understood that 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.

In an optional design solution, 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.

In this embodiment, for a transport block TB of a service to be transmitted that is transmitted from the MAC layer to the physical layer, 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.

Optionally, there may be one or more than one priority adjustment amount for different types of services. When the priority adjustment amount is one, the priorities of all types of services can be adjusted according to the one priority adjustment amount. For example, service type A and service type B both correspond to the same priority adjustment amount. When there are multiple priority adjustment amounts, 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. For example, the priority adjustment amount of service type 1 is v1, the priority adjustment amount of service type 2 is v2, and the priority adjustment amount of service type 3 is v3. This embodiment of the present application does not specifically limit this. Optionally, the priority adjustment amount may be configured by signaling, or may be predefined.

Optionally, there may be one or multiple priority adjustment amounts for different services under the same type. This embodiment of the present application does not specifically limit this.

Optionally, there may be only one or more than one priority adjustment amount for the same service. For example, when the channel quality information of service 1 is a1, the priority adjustment amount is v1. When the channel quality information is a2, the priority adjustment amount is v2. This embodiment of the present application does not specifically limit this.

For the case where there is only one priority adjustment amount for all services, the priority adjustment parameter indicates the priority adjustment amount as follows:

As one example, the priority adjustment parameter may be the priority adjustment amount itself. For example, the priority adjustment parameter is the priority adjustment amount v1. For another example, the priority adjustment parameter is the priority adjustment amount of 0.

As another example, 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. For example, a 1-bit binary number 1 represents the priority adjustment amount v1. For another example, a 1-bit binary number 0 indicates a priority adjustment amount of 0.

Except for the case where there is only one priority adjustment amount for all the above services, there will be multiple priority adjustment amounts, and these priority adjustment amounts need to be distinguished and indicated by priority adjustment parameters. For this situation, the priority adjustment parameter may indicate the priority adjustment amount in the following manner:

As another example, 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.

In a possible design solution, the priority adjustment parameter of the service to be transmitted is determined by the channel quality information and/or the first priority.

Optionally, the worse the channel quality and/or the lower the first priority, a priority adjustment parameter capable of indicating a larger priority adjustment amount is determined. The better the channel quality and/or the higher the first priority, a priority adjustment parameter that can indicate a smaller amount of priority adjustment is determined.

In this example, the higher the first priority, the smaller the space for the priority to be increased. At this time, 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. At this time, 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.

In this example, the worse the channel quality is, the more busy the channel on the resource pool is, and the less chance of successfully preempting resources. In this case, determining a priority adjustment parameter that can indicate a larger priority adjustment amount can improve the chance of successfully preempting resources. The better the channel quality is, the more idle the channel on the resource pool is, and the greater the chance of successfully preempting resources. In this case, a priority adjustment parameter that can indicate a smaller priority adjustment amount can be determined. In an actual implementation process, 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.

In the following, the channel quality can be positively correlated with the channel quality information, and 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.

As an example, assume the value of the first priority is 7. When the channel quality information is A1, the priority adjustment amount Delta is 6; when the channel quality information is A2, the priority adjustment amount Delta is 5. Among them, 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.

As another example, when the value of the first priority is 1-2, 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.

As another example, 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. Among them, 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.

Optionally, the better the channel quality and/or the higher the first priority, a priority adjustment parameter capable of indicating a larger amount of priority adjustment is determined. The worse the channel quality and/or the higher the first priority, the priority adjustment parameter that can indicate a smaller amount of priority adjustment is determined.

In this example, the higher the first priority, the more important the service to be transmitted is, and determining the priority adjustment parameter that can indicate a larger priority adjustment amount can provide more protection for the important service. The better the channel quality is, the more idle the channel on the resource pool is, and more resources are available. Determine the priority adjustment parameter that can indicate a larger priority adjustment amount, which can improve the success rate of the first device to preempt resources when the channel is sufficiently idle. Chance.

In a possible design solution, 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.

Optionally, in the signaling for configuring the priority adjustment parameter, the priority adjustment parameter, the parameter indicating the channel quality information and/or the value of the first priority are configured in a corresponding manner. Or, optionally, in the signaling for configuring the priority adjustment parameter, the value of the priority adjustment parameter corresponds to the parameter indicating the channel quality information and/or the value of the first priority.

In this way, after acquiring 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.

S402, 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.

Specifically, 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.

In an optional design solution, the value of the priority is negatively correlated with 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 parameter. Specifically, 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.

For example, the value of the adjusted priority can be determined according to equation (1):

prioTX=prioTX0-Delta Equation (1)

where 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, and 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.

For example, the value of the adjusted priority can be determined according to equation (2):

prioTX=prioTX0+Delta Equation (2)

In a possible design solution, if the target condition is met, 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. Alternatively, the first priority is higher than the first threshold. Or, the signal quality information detected by the first device on the resource pool is lower than the second threshold. Or, the resource occupancy rate of the resource pool corresponding to the first device is lower than the occupancy rate threshold. Or, the signal quality information detected by the first device on the resource pool is lower than the second threshold. Or, the service period of the service to be transmitted is higher than the period threshold. Or, the traffic of the first device is lower than the quantity threshold. Alternatively, the first device operates in a power saving mode.

Exemplarily, the priority adjustment function of the first device has been activated. Specifically, 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.

In this example, by selecting whether to enable 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.

Exemplarily, the resource occupancy rate of the resource pool corresponding to the first device is less than or equal to the occupancy rate threshold. Specifically, the occupancy rate threshold may be configured through protocol pre-configuration, network pre-configuration, or dynamic configuration. For example, the occupancy rate threshold may be a real number less than 1, such as 0.1, 0.2, 0.3, etc. Or, the service period of the service to be transmitted is greater than or equal to the period threshold. Specifically, the period threshold can be configured by means of protocol pre-definition, network pre-configuration or dynamic configuration. For example, the period threshold can be 100ms, 200ms, 500ms, etc. Integer. Alternatively, the traffic volume of the first device is less than or equal to a quantity threshold, and the quantity threshold may be configured by means of protocol pre-definition, network pre-configuration, or dynamic configuration. Specifically, 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. . Correspondingly, 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. When the traffic volume is characterized by the traffic density, 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. When the traffic volume is characterized by the traffic ratio of the first device in all terminal devices, the quantity threshold may be a constant greater than 0 and less than 1, such as 1%, 10%, and 30%. When the traffic volume is represented by the ratio of the traffic of the first device and the third device, the quantity threshold may be a constant greater than 0 and less than 1, such as 1%, 10%, and 30%.

In this example, 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. When 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.

Exemplarily, the first device operates in a power saving mode. Specifically, 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.

In this example, 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.

Exemplarily, the first priority is higher than the first threshold.

The first threshold is a non-negative integer. For example, 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.

Specifically, taking the negative correlation between the value of the priority and the level of the priority as an example, 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. For example, 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.

In this example, 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.

Exemplarily, the signal quality information detected by the first device on the resource pool is lower than a second threshold, and the second threshold may be configured by means of protocol pre-definition, network pre-configuration, or dynamic configuration. Specifically, 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. Correspondingly, 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. When the signal quality information is characterized by RSSI, the second threshold can be -60dbm, -70dBm, -80dBm or -90dBm, etc. When the signal quality information is characterized by RSRQ, the second threshold may be -6dB, -3dB, 0dB, 3dB, 6dB or 10dB, etc. When the signal quality information is characterized by SNR, the second threshold can be -6dB, -3dB, 0dB, 3dB, 6dB or 10dB, etc. When the signal quality information is characterized by SINR, the second threshold can be -6dB, -3dB, 0dB, 3dB, 6dB or 10dB, etc. When the signal quality information is represented by a channel busy ratio (channel busy ratio, CBR), the second threshold may be a real number less than 1, such as 0.1, 0.2, 0.3, etc. When the signal quality information is represented by a channel occupancy ratio (CR), 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.

In this example, when 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.

In a possible design solution, if the target condition is not met, in step 402, the first priority is determined as the second priority.

Optionally, 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. Optionally, 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.

It should be noted that public safety services refer to services that provide communication guarantees and services under extreme conditions such as fires, earthquakes, wars, and floods. Compared with emergency public safety services, commercial services refer to services that are used for users to perform normal communication, such as voice, file transmission, data transmission, and the like.

Specifically, the resource selection mode with less monitoring, the lower the corresponding first threshold.

It should be noted that, if the value of the first priority is negatively correlated with the level of the first priority, 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.

Among the above three resource selection methods, 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.

In this example, the resource selection mode with less monitoring, the lower the corresponding first threshold. In this way, 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. In other words, due to the resource selection method with less monitoring, the energy saving requirement is higher. In this example, for the first device with higher energy saving requirement, 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.

For example, it is assumed that 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. Then, 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.

Specifically, for a transmission mode with higher reliability requirements, the corresponding first threshold is lower.

Optionally, in the above three transmission modes, 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.

Of course, in other examples, 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.

In this example, 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.

Specifically, 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.

Among the above three resource selection modes, 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.

In this example, the resource selection mode with less monitoring, the higher the energy saving requirement, and the lower the corresponding second threshold. In this way, the first device using the resource selection method with less monitoring can enable the priority adjustment function only when the channel is more idle. In other words, when 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. In this way, 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.

Specifically, 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.

In the above three transmission modes, 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.

In this example, 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.

S403, 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. In a possible design solution, 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.

Considering that after the first priority of the service to be transmitted is adjusted to the second priority, there is a situation that the priority of the service of the third device is equal to that of the service of the third device, so that when the third device faces two services of the same priority, Unable to determine resource avoidance policy. The embodiment of the present application provides the following design solutions:

In a possible design solution, the priority indication information further includes 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.

In this example, since 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.

Further, 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.

Wherein, 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.

For example, different values of the priority adjustment parameter are explicitly indicated by different values of the reserved bits of the SCI. For another example, the priority adjustment parameter is implicitly indicated by a field indicating a power saving mode or a resource selection manner.

As an example, the indication information of the priority adjustment parameter in the SCI may be 1 bit, 2 bits or more. Optionally, the priority adjustment parameter may be indicated by a reserved bit in the first-level SCI. Optionally, different values of the indication information of the priority adjustment parameter in the SCI correspond to different priority adjustment parameter values. Optionally, 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.

In this step, 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.

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, as an assisting party of transmission resources, refers to a terminal device with resource avoidance capability. For example: 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.

In the first example, a fully aware device is used as an example to describe the resource avoidance process of the third device in detail.

Please refer to FIG. 3 , 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.

Exemplarily, if 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.

At this time, 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.

If the value of the second priority of the service to be transmitted is the adjusted priority, 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.

If the value of the second priority of the service to be transmitted has not been adjusted, the third device may choose to avoid or not to avoid the service to be transmitted. Alternatively, 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 method for the third device to determine whether the value of the second priority of the service to be transmitted is the adjusted priority based on the priority adjustment parameter is as follows:

Specifically, if 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.

As an example, if 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.

As another example, if the priority adjustment parameter is an indication parameter associated with the priority adjustment amount, 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.

As another example, if 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. For example, the 1-bit binary number 1 indicates that the value of the second priority of the service to be transmitted is not adjusted. 1-bit binary number 0, which determines that the value of the second priority of the service to be transmitted is not adjusted.

Exemplarily, if 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 1, that is, the priority of the service transmitted by the third device is higher than that of the first device. The value of the second priority of the service to be transmitted is low. At this time, 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.

For the second example, please refer to FIG. 5 , the third device is a partial sensing device.

If the first resource is not within the detection range of the third 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.

If the transmission resource of the service to be transmitted, that is, the first resource in Figure 5, is within the detection range of the third device, the third device can detect the resource and can avoid it in a targeted manner. At this time, 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.

Based on the communication method shown in FIG. 4 , on the one hand, 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 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. On the other hand, 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 .

S404, the second device determines the value of the first priority according to the value of the second priority and the priority adjustment parameter.

Specifically, 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.

It should be noted that 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.

In an optional design solution, the value of the priority is negatively correlated with 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 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.

S405, 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.

In this example, 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.

Exemplarily, 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 . As shown in Figure 5, the communication method includes the following steps:

S501: The first device determines a value of a first priority of a service to be transmitted and a priority adjustment parameter.

In this embodiment, 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:

In one embodiment, the first device may be a fully aware device.

In another implementation manner, the first device may also be a partial sensing device capable of monitoring the transmission resources occupied by the third device.

It should be understood that the first device may be any terminal device shown in FIG. 2 . 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. For example, 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.

In an optional design solution, 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. For the manner in which 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.

In a possible design solution, 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.

Optionally, the worse the channel quality and/or the higher the first priority, a priority adjustment parameter capable of indicating a larger amount of priority adjustment is determined. The better the channel quality and/or the lower the first priority, a priority adjustment parameter is determined that can indicate a smaller amount of priority adjustment.

In this example, the lower the first priority, the smaller the space for the priority to be lowered. In this case, 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. At this time, 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.

In this example, the worse the channel quality is, the more busy the channel on the resource pool is, and the less chance of successfully avoiding resources. In this case, determining a priority adjustment parameter that can indicate a larger priority adjustment amount can improve the chance of successfully avoiding resources. The better the channel quality is, the more idle the channel on the resource pool is, and the greater the chance of successfully avoiding resources. At this time, a priority adjustment parameter that can indicate a smaller priority adjustment amount can be determined.

In an actual implementation process, 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.

In the following, 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.

As an example, assume that the value of the first priority is 1. When the channel quality information is A1, the priority adjustment amount Delta is 6; when the channel quality information is A2, the priority adjustment amount Delta is 5. Among them, 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.

As another example, when the values of the first priority are 1, 2, 3, 4, and 5, 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.

As another example, 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. Among them, 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.

Optionally, the better the channel quality and/or the lower the first priority, a priority adjustment parameter capable of indicating a larger amount of priority adjustment is determined. The worse the channel quality and/or the higher the first priority, the priority adjustment parameter that can indicate a smaller amount of priority adjustment is determined.

In this example, 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 higher the first priority, the more important the service to be transmitted is, and the priority adjustment parameter that can indicate a smaller priority adjustment amount is determined to avoid affecting the transmission of important services in order to avoid the transmission resources of 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.

For the specific implementation of the above channel quality information, reference may be made to the manner provided by S401 in the communication method shown in FIG. 4 , which will not be repeated here.

S502, 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.

In an optional design solution, the value of the priority is negatively correlated with 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 parameter. Specifically, 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.

In a possible design solution, if the target condition is met, 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. Alternatively, the first priority is lower than the first threshold. Or, the signal quality information detected by the first device on the resource pool is lower than the second threshold. Or, the resource occupancy rate of the resource pool corresponding to the first device is less than or equal to the occupancy rate threshold. Or, the signal quality detected by the first device on the resource pool is lower than the quality threshold. Or, the service period of the service to be transmitted is greater than or equal to the period threshold. Or, the traffic volume of the first device is less than or equal to the quantity threshold. Alternatively, the first device operates in a non-power saving mode.

The following describes only examples of different target conditions. For other conditions, reference may be made to the content of S402 in the communication method shown in FIG. 4 , which will not be repeated here.

Illustratively, the first priority is lower than the first threshold.

Specifically, taking the negative correlation between the value of the priority and the level of the priority as an example, if 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. For example, 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.

In this example, 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. Exemplarily, the first device works in a non-power saving mode, that is, the first device is a fully aware device.

Exemplarily, the first device works in a non-power saving mode, that is, the first device is a fully aware device.

In this example, 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.

In a possible design solution, if the target condition is not met, in step 502, the first priority is determined as the second priority.

Optionally, 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.

Specifically, for a transmission mode with higher reliability requirements, 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.

Optionally, in the above three transmission modes, 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.

In this example, for a service that requires higher reliability, the corresponding first threshold is higher. For example, when a commercial service is issued, 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.

Specifically, for a transmission mode with higher reliability requirements, the corresponding second threshold is lower. The lower the second threshold is, the more idle the channel is required to be. 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 controlling the traffic of the currently higher priority traffic type, it can only be used under lower signal quality (more idle channel conditions).

In the above three transmission modes, 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.

In this example, 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. In this way, for services in transmission modes with higher reliability requirements, such as public safety services, 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.

S503, 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.

In a possible design solution, 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.

In a possible design solution, the priority indication information further includes 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.

It should be noted that the first device acts as an assisting party for transmitting resources, and the first device performs an action of resource avoidance. Of course, as 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. As the assisted party of the transmission resource, 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.

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.

For the first device, the first device receives the SCI4 of the third device, and determines the service priority and the second resource of the third device.

Exemplarily, if 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.

Exemplarily, if the value of the priority field of the first device in SCI3 is 1, and the value of the priority field of the third device in SCI4 is 2, that is, the value of the second priority of the service to be transmitted transmitted by the first device is 1. The value is lower than the priority of the service transmitted by the third device. At this time, 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.

For the fully aware device as 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 determines the service priority and the first resource of the first 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. At this time, 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.

Exemplarily, if the value of the priority field of the first device in SCI3 is 1, and the value of the priority field of the third device in SCI4 is 2, that is, the priority of the service to be transmitted transmitted by the first device is higher than that of the third device. The priority of the service transmitted by the device is low. At this time, 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.

For 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.

For the first device, the first device receives the SCI4 of the third device, and determines the service priority and the second resource of the third device. For 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.

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. At this time, 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.

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.

For 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.

For the first device, the first device receives the SCI4 of the third device, and determines the service priority and the second resource of the third device. For 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.

For a fourth example, please refer to FIG. 3 , taking the first device as a partial sensing device as an example, to describe in detail the resource avoidance process when the two resources conflict.

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. For 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.

Based on the communication method shown in FIG. 5 , on the one hand, the first device, such as a fully aware 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. In this way, the technical problem that the power saving requirement and the data transmission performance of the device with limited perception capability cannot be taken into account can be solved, thereby improving the communication efficiency and reliability of the device with limited perception capability. On the other hand, the first device, such as a fully aware 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.

S504, the second device determines the value of the first priority according to the value of the second priority and the priority adjustment parameter.

In an optional design solution, the value of the priority is negatively correlated with 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 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.

For the acquisition method of the above-mentioned priority adjustment parameters, reference may be made to the communication method shown in FIG. 4 . It will not be repeated here.

S505, 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.

In this example, 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.

Exemplarily, 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.

Specifically, when discussing the evolution of SL in R17, when discussing public safety services and commercial services other than ITS, 3GPP defines new service requirements in addition to the mechanism of reusing existing service requirements. .

For the public safety business, the following service requirements are defined:

Table 1: Newly standardized PQIs for public safety

Likewise, for commercial services, the following service requirements are newly defined:

Table 2: Newly standardized PQIs for commercial services

Among them, 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.

Among them, 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. It can be seen that 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.

For the above technical problem, as shown in Figure 6, the communication method includes the following steps:

S601, 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.

In a specific implementation process, the service type of the service to be transmitted may be one of a public safety service, a commercial service, and an ITS service.

It should be noted that public safety services refer to services that provide communication guarantees and services under extreme conditions such as fires, earthquakes, wars, and floods. Compared with emergency public safety services, 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.

Optionally, the feature information is used to determine, associate or identify the service type of the service to be transmitted.

Optionally, the characteristic information is used to determine the transmission resource of the service to be transmitted.

In this embodiment, different service types correspond to different characteristic information for determining the transmission resources of the service to be transmitted. By sending the first control information to indicate the characteristic information, 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.

In the first possible design solution, the characteristic information may be the priority of the channel corresponding to the service to be transmitted. At this time, S602 includes:

Get the priority association. 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 the characteristic information.

Exemplarily, 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.

For example, 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.

Optionally, the channels include logical channels and/or MAC CEs. The embodiments of the present application are not specifically limited.

Optionally, 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.

In this design solution, 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. 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 the service requirements for different services. resources to ensure the required communication capabilities.

In a specific implementation process, 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.

In a second possible design solution, 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. Wherein, 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.

Exemplarily, 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.

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:

Different CRC scrambling sequences corresponding to different service types.

Specifically, the first service type corresponds to the first CRC scrambling sequence, and 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. Optionally, the CRC scrambling sequence is also sometimes referred to as a radio network temporary identity (RNTI). In the cellular link, the RNTI is used to identify the signal transmission between the UE and the network. Here, 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.

Specifically, 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, and 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. 2. Time-frequency resource location. Optionally, 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:

Different service types correspond to different values of reserved bit information.

Specifically, the first service type corresponds to the first value of the reserved bit information, and the second service type corresponds to the second value of the reserved bit information.

For example, the first control information is implemented by the SCI, the reserved bit information of the SCI is 1 bit, and 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:

Different service types correspond to different values of the extended bit information.

Specifically, the first service type corresponds to the first value of the extended bit information, and the second service type corresponds to the second value of the extended bit information.

For example, the first control information is implemented by the SCI, the priority field information of the SCI is originally 3 bits, and 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, and the second service type corresponds to the binary number 0 of the extended bit information.

For example, the first control information is implemented by the SCI, the priority field information of the SCI is originally 3 bits, and the priority field information of the SCI is extended by 1 bit to 4 bits. Then the priority of 4 bits has 16 states in total. For example, the included states are: 8 states from 0000 to 0111, and another 8 states from 1000 to 1111. For example, if 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, and the last eight states are the priorities of newly introduced or defined services. Optionally, when its value is one or more of the last 8 types, 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.

Exemplarily, 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.

Specifically, 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.

Further, 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.

In the above-mentioned second possible design solution, 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. By sending the first control information indicating the characteristic 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.

It should be noted that 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. In this example, on the basis of indicating the priority of the service, 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.

In a specific implementation process, 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.

In order to solve the above conflict problem, the embodiments of the present application also provide the following embodiments:

Optionally, in the above-mentioned second possible design solution, 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, and the second service set is a set of services under the second service type.

In this example, when two services under the first service type and the second service type conflict, 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.

Optionally, 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.

Exemplarily, if the service 1 in the first service set conflicts with the service 2 in the second service set. 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.

In other words, when two services conflict, if the two services belong to the first service and the second service respectively, then 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.

In the above-mentioned second possible design solution, 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. By sending the first control information indicating the characteristic 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.

In a specific implementation process, 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.

Exemplarily, the first service may be a public safety service, and the second service may be an intelligent transportation system ITS service or a commercial service.

In this way, when there is a resource conflict between the public safety service and the ITS service, or the resource conflict between the public safety service and the commercial service, all or part of the higher priority public safety service can be preferentially transmitted, and the resource conflict can be avoided.

In this way, in the case of resource conflict between commercial services and ITS services, 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.

In this way, in the scenario of resource conflict between commercial services and ITS services, 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.

In this way, in the case of resource conflict between the SL service and the uplink and downlink communication services, 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.

In this example, 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. By sending the first control information indicating the characteristic 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.

In a specific implementation process, the above-mentioned first control information is realized by SCI. The characteristic information is carried in the SCI and sent. 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.

In a possible design solution, the first service and the second service may use different resource selection methods. For the optional resource selection method, reference may be made to the above term explanation part, which will not be repeated here.

In a possible design solution, 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. Specifically, the first device may determine different transmission parameters for the first service and the second service according to the channel quality information.

It should be noted that, the communication method shown in FIG. 6 may be implemented in combination with the communication methods shown in FIG. 4 and FIG. 5 .

Specifically, in the communication method shown in FIG. 6 , 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.

Alternatively, in the communication method shown in FIG. 4 or FIG. 5 , 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 .

Exemplarily, FIG. 7 is a first structural schematic diagram of a communication apparatus provided by an embodiment of the present application. As shown in FIG. 7 , the communication apparatus 700 includes: a processing module 701 and a transceiver module 702 . For convenience of description, FIG. 7 only shows the main components of the communication device.

In some embodiments, 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.

Exemplarily, 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.

In a possible design solution, 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. Alternatively, 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.

Optionally, the priority adjustment parameter is determined by signaling configuration, protocol pre-definition, or the communication apparatus 700 itself.

Optionally, the priority adjustment parameter is configured to be associated with the channel quality parameter information and/or the first priority information.

In a possible design solution, when the second priority is higher than the first priority, 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:

Illustratively, the priority adjustment function of the communication device 700 has been activated.

Exemplarily, the first priority is higher than the first threshold. Exemplarily, the signal quality information detected by the communication apparatus 700 on the resource pool is lower than the second threshold. Alternatively, the resource occupancy rate of the resource pool corresponding to the communication apparatus 700 is less than or equal to the occupancy rate threshold. Or, the service period of the service to be transmitted is greater than or equal to the period threshold. Alternatively, the traffic volume of the communication device 700 is less than or equal to the quantity threshold.

Exemplarily, the communication device 700 operates in a power saving mode.

In another possible design solution, the processing module 701 is further configured to determine the first priority as the second priority if the target condition is not met.

Further, 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.

In a possible design solution, 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.

In a possible design solution, 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.

In other embodiments, 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.

In a possible design solution, the value of the priority is negatively correlated with 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 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.

In some embodiments, 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 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.

In a possible design solution, the value of the priority is negatively correlated with 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 parameter. 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.

In a possible design solution, when the second priority is higher than the first priority, 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. Among them, the target conditions include one or more of the following:

Illustratively, the first priority is lower than the first threshold.

Exemplarily, the signal quality information detected by the communication apparatus 700 on the resource pool is lower than the second threshold. Alternatively, the resource occupancy rate of the resource pool corresponding to the communication apparatus 700 is less than or equal to the occupancy rate threshold. Or, the service period of the service to be transmitted is greater than or equal to the period threshold. Alternatively, the traffic volume of the communication device 700 is less than or equal to the quantity threshold.

Exemplarily, the communication device 700 operates in a power saving mode.

Further, 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.

In other embodiments, 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 .

In a possible design solution, the value of the priority is negatively correlated with 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 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.

In still other embodiments, 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.

In a possible design solution, 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.

Illustratively, the channels include logical channels and/or MAC CEs.

Illustratively, the priority association is predefined by a signaling configuration or a protocol.

Exemplarily, the first service is a public safety service, and the second service is an intelligent transportation system ITS service or a commercial service.

Optionally, 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 .

Optionally, the communication apparatus 700 may further include a storage module (not shown in FIG. 7 ), where the storage module stores programs or instructions. When 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 functions of the three devices and the functions of the first device in the communication method shown in FIG. 6 .

It should be understood that 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.

It should be noted that, if the communication device 700 performs the function of the first device, 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.

Exemplarily, 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. As shown in FIG. 8 , the communication apparatus 800 may include a processor 801 . Optionally, the communication apparatus 800 may further include a memory 802 and/or a transceiver 803 . Wherein, the processor 801 is coupled with the memory 802 and the transceiver 803, such as can be connected through a communication bus.

Each component of the communication device 800 will be described in detail below with reference to FIG. 8 :

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. For example, 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).

Alternatively, 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 .

In a specific implementation, as an embodiment, the processor 801 may include one or more CPUs, such as CPU0 and CPU1 shown in FIG. 8 .

In a specific implementation, as an embodiment, the communication apparatus 800 may also include multiple processors, for example, the processor 801 and the processor 804 shown in FIG. 2 . Each of these 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. For the specific implementation, reference may be made to the above method embodiments, which will not be repeated here.

Alternatively, 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. 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) of the communication device 800, which is not specifically limited in this embodiment of the present application.

The transceiver 803 is used for communication with other communication devices. For example, 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. For another example, 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.

Optionally, 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.

Optionally, 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.

It should be noted that 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.

In addition, for the technical effect of the communication apparatus 800, reference may be made to the technical effect of the communication method described in the above method embodiments, which will not be repeated here.

Embodiments of the present application provide a communication system. The communication system includes the above-mentioned first device, second device and third device. Optionally, the communication system may also include network equipment.

It should be understood that the processor 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.

It should also be understood that 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. By way of example and not limitation, many forms of random access memory (RAM) are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (DRAM) Access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous connection dynamic random access memory Fetch memory (synchlink DRAM, SLDRAM) and 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. When implemented in software, 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.

It should be understood that the term "and/or" in this document is only an association relationship to describe associated objects, indicating that there can be three kinds of relationships, for example, A and/or B, which can mean that A exists alone, and A and B exist at the same time , there are three cases of B alone, where A and B can be singular or plural. In addition, the character "/" in this document generally indicates that the related objects before and after are an "or" relationship, but may also indicate an "and/or" relationship, which can be understood with reference to the context.

In this application, "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). For example, 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 .

It should be understood that, in various embodiments of the present application, 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.

Those of ordinary skill in the art can realize that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Skilled artisans may implement the described functionality using different methods for each particular application, but such implementations should not be considered beyond the scope of this application.

Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the above-described systems, devices and units may refer to the corresponding processes in the foregoing method embodiments, which will not be repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the apparatus embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not implemented. On the other hand, 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.

In addition, 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. Based on this understanding, 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 .

The above are only specific embodiments of the present application, but the protection scope of the present application is not limited to this. should be covered within the scope of protection of this application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

A communication method, characterized in that the method comprises:

The first device determines the value of the first priority of the service to be transmitted and the priority adjustment parameter;

Determine the value of the second priority according to the value of the first priority and the priority adjustment parameter;

Send priority indication information, where the priority indication information includes the value of the second priority.
The communication method according to claim 1, wherein,

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 value of the first priority. the difference in the priority adjustment parameter; or,

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 value of the first priority and the value of the first priority. the sum of the priority adjustment parameters; or,

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 value of the first priority and the value of the first priority. the sum of the priority adjustment parameters; or,

The value of the priority is positively 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 value of the first priority and the value of the first priority. The difference in priority adjustment parameters.
The communication method according to claim 1 or 2, wherein the priority adjustment parameter is determined by channel quality information and/or the first priority.
The communication method according to claim 3, wherein the priority adjustment parameter is configured to be associated with the channel quality information and/or the first priority.
The communication method according to claim 1 or 2, wherein when the second priority is higher than the first priority, determining the first priority according to the first priority and the priority adjustment parameter Second priority, including:

If the target condition is met, determining the second priority according to the first priority and the priority adjustment parameter;

Wherein, the target condition includes one or more of the following:

The priority adjustment function of the first device has been activated; or,

The first priority is higher than the first threshold; or,

The signal quality information detected by the first device on the resource pool is lower than the second threshold; or,

The resource occupancy rate of the resource pool corresponding to the first device is lower than an occupancy rate threshold; or,

The service period of the service to be transmitted is higher than the period threshold; or,

The traffic volume of the first device is lower than the quantity threshold; or,

The first device operates in a power saving mode.
The communication method according to claim 5, wherein the first threshold is determined by a resource selection method and/or a transmission mode of the first device; the second threshold is determined by the resource selection method and/or the transmission mode is determined;

Wherein, 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 communication method according to claim 1 or 2, wherein the priority indication information further includes the priority adjustment parameter.
The communication method according to claim 1 or 2, wherein the communication method further comprises:

The transmission resource of the service to be transmitted is determined according to the value of the second priority.
A communication method, characterized in that the method comprises:

The second device receives priority indication information of the service to be transmitted, where the priority indication information includes the value of the second priority;

Determine the value of the first priority 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.
A communication method, characterized in that the method comprises:

The first device determines the service type of the service to be transmitted;

Determine characteristic information according to the service type;

Send first control information, where the first control information indicates the feature information.
The communication method according to claim 10, wherein the determining the characteristic information according to the service type comprises:

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, and the priority of the channel corresponding to the service to be transmitted is the feature information.
The communication method according to claim 10, wherein the characteristic information comprises: the number of bits of the first indication information included in the first control information, and/or the second indication included in the first control information the value of information;

Wherein, 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 communication method according to claim 12, wherein the second indication information comprises 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.
The communication method according to claim 12 or 13, wherein the service to be transmitted includes a first service and a second service;

The priority of the first service is higher than the priority of the second service;

Wherein, the first service is a service with a priority higher than a 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 with a priority lower than a second priority threshold in the second service set, or the second service is all services in the second service set;

The first service set is a set of services under the first service type, and the second service set is a set of services under the second service type.
A communication device, comprising: a processing module and a transceiver module; wherein,

The processing module is used to determine the value of the first priority of the service to be transmitted and the priority adjustment parameter; and is also used to determine the second priority according to the value of the first priority and the priority adjustment parameter level value;

The transceiver module is configured to send priority indication information, where the priority indication information includes a value of the second priority.
The communication device according to claim 15, wherein:

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 value of the first priority. the difference in the priority adjustment parameter; or,

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 value of the first priority and the value of the first priority. the sum of the priority adjustment parameters; or,

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 value of the first priority and the value of the first priority. the sum of the priority adjustment parameters; or,

The value of the priority is positively 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 value of the first priority and the value of the first priority. The difference in priority adjustment parameters.
The communication device according to claim 15 or 16, wherein the priority adjustment parameter is determined by channel quality information and/or the first priority.
18. The communication apparatus of claim 17, wherein the priority adjustment parameter is configured to be associated with the channel quality information and/or the first priority.
The communication device according to claim 15 or 16, wherein when the second priority is higher than the first priority, the processing module is further configured to: a priority and the priority adjustment parameter to determine the second priority;

Wherein, the target condition includes one or more of the following:

The priority adjustment function of the communication device has been activated; or,

The first priority is higher than the first threshold; or,

The signal quality information detected by the communication device on the resource pool is lower than the second threshold; or,

The resource occupancy rate of the resource pool corresponding to the communication device is lower than the occupancy rate threshold; or,

The service period of the service to be transmitted is higher than the period threshold; or,

The traffic volume of the communication device is lower than the quantity threshold; or,

The communication device operates in a power saving mode.
The communication device according to claim 19, wherein the first threshold is determined by a resource selection mode and/or a transmission mode of the communication device; the second threshold is determined by the resource selection mode and/or the transmission mode. The transmission mode is determined;

Wherein, 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: an ITS service-based mode, a public safety service-based mode, and a commercial service-based mode.
The communication device according to claim 15 or 16, wherein the priority indication information further includes the priority adjustment parameter.
The communication device according to claim 15 or 16, wherein 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.
A communication device, comprising: a processing module and a transceiver module; wherein,

The transceiver module is configured to receive priority indication information of the service to be transmitted, where the priority indication information includes the value of the second priority;

the processing module, 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.
A communication device, comprising: a processing module and a transceiver module; wherein,

The processing module is used to determine the service type of the service to be transmitted;

The processing module is further configured to determine feature information according to the service type;

The transceiver module is configured to send first control information, where the first control information indicates the feature information.
The communication device according to claim 24, wherein the processing module is further configured to obtain a priority association relationship; the priority association relationship includes a relationship between the priorities of each service and each channel under different service types Correspondence;

The processing module is further configured to determine the priority of the channel corresponding to the service to be transmitted based on the service type and the priority association, where the priority of the channel corresponding to the service to be transmitted is the feature information .
The communication device according to claim 24, wherein the characteristic information comprises: the number of bits of the first indication information included in the first control information, and/or the second indication included in the first control information the value of information;

Wherein, 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 communication device according to claim 26, wherein the second indication information comprises 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.
The communication device according to claim 26 or 27, wherein the service to be transmitted includes a first service and a second service;

The priority of the first service is higher than the priority of the second service;

Wherein, the first service is a service with a priority higher than a 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 with a priority lower than a second priority threshold in the second service set, or the second service is all services in the second service set;

The first service set is a set of services under the first service type, and the second service set is a set of services under the second service type.
A communication device, comprising: a processor coupled to a memory;

The processor is configured to execute the computer program stored in the memory, so that the communication apparatus executes the communication method according to any one of claims 1-14.
A computer-readable storage medium, characterized in that the computer-readable storage medium comprises a computer program or instruction, which, when the computer program or instruction is executed on a computer, causes the computer to perform the operations as in claims 1-14 The communication method of any one.