Communication method and device

Abstract

The invention provides a communication method and device. The method may comprise: a first communication device determining a first candidate resource and a first service for sidelink transmission; the first communication device determines a first resource from the first candidate resources; the first resource and the first activation period have an intersection in the time domain, and the first activation period is determined according to the DRX activation period corresponding to the first service. In the present application, a first communication device selects a resource having an intersection with a DRX activation period corresponding to a first service as a reserved resource, and uses the reserved resource to perform side link transmission, so that it can be ensured that the first communication device can receive transmission from a second communication device (such as TX UE) within the activation period, the power consumption of the RX UE is saved, and the transmission efficiency is improved. And side link transmission between the first communication equipment and the second communication equipment is ensured.

Description

[0001] This application is a divisional application. The application number of the original application is 202011141177.5, and the original application date is October 22, 2020. The entire contents of the original application are incorporated into this application by reference. Technical Field

[0002] The present application relates to the field of communications, and in particular to a communication method and device. Background Art

[0003] The new radio (NR) system is the current mainstream wireless communication technology. It is aimed at the business characteristics of vehicle to everything (V2X) and new business transmission requirements, and aims to support V2X communication with lower latency and higher reliability. However, in the sidelink, the receiving terminal device (RX UE) will always monitor the sidelink control information (SCI) to see if there is any information from the transmitting terminal device (TX UE).

[0004] However, in the scenario where the UE autonomously selects resources, the RX UE does not always exchange effective information with the TX UE. Therefore, when there is no data exchange between the transmitting and receiving UEs, if the RX UE continues to monitor the SCI, the power consumption of the RX UE will increase. Summary of the invention

[0005] The present application provides a communication method and device to save power consumption of RX UE.

[0006] In a first aspect, the present application provides a communication method that can be applied to a communication system, and the communication system can be applied to a sidelink communication system, such as a vehicle networking system. The method may include: a first communication device determines a first candidate resource and a first service for sidelink transmission; the first communication device determines a first resource from the first candidate resource; the first resource and the first activation period have an intersection in the time domain, and the first activation period is determined according to the DRX activation period corresponding to the first service.

[0007] In the present application, the first communication device selects resources that overlap with the DRX activation period corresponding to the first service as reserved resources, and uses the reserved resources for side link transmission. This ensures that the first communication device can receive transmissions from the second communication device (such as TX UE) during the activation period, saves power consumption of the RX UE, and ensures side link transmission between the first communication device and the second communication device.

[0008] Based on the first aspect, in some possible implementations, the first communication device determines the first resource from the first candidate resources, including: the first communication device determines the resources in the first candidate resources that intersect with the first activation period in the time domain as the second candidate resources; the first communication device determines the first resource from the second candidate resources.

[0009] Based on the first aspect, in some possible implementations, the first communication device determines the resources in the first candidate resources that intersect with the first activation period in the time domain as second candidate resources, including: the first communication device determines the resources in the first candidate resources that are included in the first activation period in the time domain as second candidate resources.

[0010] Based on the first aspect, in some possible implementations, in order to improve the matching degree between the reserved resources and the DRX activation period of the first service, in the scenario of multiple destination IDs, the first communication device may also select the second service from the first service before using the first resource to start side link transmission. At this time, the first communication device may select a destinationID whose corresponding DRX activation period overlaps with the first resource in the time domain from the above-mentioned multiple destination IDs.

[0011] Based on the first aspect, in some possible implementations, in order to improve the matching degree between the reserved resources and the DRX activation period of the first service, the above method may also include: the first communication device determines the first activation period; the first communication device monitors the SCI during the first activation period; here, the SCI is used to indicate the resources used by other UEs for sidelink transmission.

[0012] In the present application, after determining the first activation period, the MAC layer of the first communication device indicates the first activation period to the physical layer of the first communication device. The physical layer listens to the SCI sent by other UEs during the first activation period, and then the physical layer performs measurements during the first activation period.

[0013] Based on the first aspect, in some possible implementations, the first communication device determines a union of DRX activation periods in the time domain in at least one DRX configuration, that is, a first activation period, where the at least one DRX configuration may be part or all of the DRX configurations that can be determined by the first communication device. It is understandable that the at least one DRX configuration may include a DRX configuration for the first service.

[0014] Further, the first communications device performs measurement during the first activation period.

[0015] In the present application, the above measurement may include measuring PSCCH-RSRP or PSSCH-RSRP; or measuring S-RSSI, wherein PSCCH-RSRP is obtained by measuring DMRS associated with PSCCH, and PSSCH-RSRP is obtained by measuring DMRS associated with PSSCH.

[0016] It can be understood that the first communication device monitors the SCI sent by other UEs during the first activation period. Then, the resources indicated by the SCI are located within the first activation period. Therefore, the first communication device measures the resources indicated by the SCI, which can also be considered as measurement within the first activation period.

[0017] Based on the first aspect, in some possible implementations, in order to improve the matching degree between the reserved resources and the DRX activation period of the first service, the first communication device may also perform resource exclusion. When performing resource exclusion within the selection window, the MAC layer of the first communication device first indicates to the physical layer the union of the DRX activation periods corresponding to the first service and / or the union of the DRX activation periods corresponding to the current service in the first service and the non-periodic service in the historical service, that is, the first activation period. Then, the physical layer excludes resources from the second resources and determines the resources that have an intersection with the above union as the first candidate resources. It can be understood that the first candidate resource needs to meet at least one of the following conditions: there is an intersection with the union of the DRX activation periods corresponding to the first service in the time domain; there is an intersection with the union of the DRX activation periods corresponding to the current service in the first service and the non-periodic service in the historical service in the time domain.

[0018] In the present application, the second resource may be a resource corresponding to a resource determined by the physical layer through sensing in the selection window, or may be a resource corresponding to a resource in the selection window after the physical layer excludes resources determined by sensing.

[0019] In some optional implementations, the physical layer may further exclude resources from the first candidate resources.

[0020] In a second aspect, the present application provides a communication method that can be applied to a communication system, and the communication system can be applied to a side link communication system, such as a vehicle networking system. The method may include: in a scenario where the first service includes multiple destination IDs, before the first communication device uses the first resource to start the side link transmission, it can also select the second service from the first service. At this time, the first communication device can select the destination ID whose corresponding DRX activation period and the first resource have an intersection in the time domain from the above multiple destination IDs.

[0021] In a third aspect, an embodiment of the present application provides a communication method, which can be applied to a communication system, and the communication system can be applied to a side link communication system, such as a vehicle networking system. The method may include: a first communication device determines a second activation period; the first communication device monitors SCI during the second activation period;

[0022] Here, SCI is used to indicate resources used by other UEs for sidelink transmission.

[0023] In the present application, after determining the second activation period, the MAC layer of the first communication device indicates the second activation period to the physical layer of the first communication device. The physical layer monitors the SCI sent by other UEs during the second activation period, and then the physical layer performs measurements during the second activation period.

[0024] Based on the third aspect, in some possible implementations, the first communication device determines a union of DRX activation periods in the time domain in at least one DRX configuration, that is, a second activation period, where the at least one DRX configuration may be part or all of the DRX configurations that can be determined by the first communication device. It is understandable that the at least one DRX configuration may include a DRX configuration for the first service.

[0025] Furthermore, the first communication device performs sensing during the second activation period and demodulates the SCI of other UEs to obtain resource occupancy status of other UEs.

[0026] In the present application, the first communication device selects resources that have an intersection with the DRX activation period corresponding to the first service (i.e., the second activation period) as reserved resources, and uses the reserved resources for side link transmission. This ensures that the first communication device can receive transmissions from the second communication device (such as TX UE) during the activation period, saves power consumption of the RX UE, and ensures side link transmission between the first communication device and the second communication device.

[0027] Based on the third aspect, in some possible implementations, the first communications device may perform measurements according to the SCI during the second activation period, that is, measure the resources indicated by the SCI.

[0028] In the present application, the above-mentioned "measurement" may include measuring PSCCH-RSRP or PSSCH-RSRP; or measuring S-RSSI. PSCCH-RSRP is determined by measuring DMRS associated with PSCCH, and PSSCH-RSRP is determined by measuring DMRS associated with PSSCH.

[0029] It can be understood that if the first communication device monitors the SCI during the second activation period, then the resources indicated by the SCI are located within the second activation period. Therefore, if the first communication device measures the resources indicated by the SCI, it can also be considered as measuring within the second activation period.

[0030] Based on the third aspect, in some possible implementations, in order to improve the matching degree between the reserved resources and the DRX activation period of the first service, the first communication device can also determine the first candidate resources and the first service for side link transmission; the first communication device determines the first resource from the first candidate resources.

[0031] Based on the third aspect, in some possible implementations, the first communication device determines the first resource from the first candidate resources, including: the first communication device determines the resources in the first candidate resources that have an intersection with the second activation period in the time domain as the second candidate resources; the first communication device determines the first resource from the second candidate resources.

[0032] Based on the third aspect, in some possible implementations, the first communication device determines the resources in the first candidate resources that intersect with the second activation period in the time domain as second candidate resources, including: the first communication device determines the resources in the first candidate resources that are included in the second activation period in the time domain as second candidate resources.

[0033] Based on the third aspect, in some possible implementations, in order to improve the matching degree between the reserved resources and the DRX activation period of the first service, in the scenario of multiple destination IDs, before the first communication device uses the first resource to start side link transmission, it can also select the first service, that is, the destination ID. At this time, the first communication device can select the corresponding DRX activation period from the above-mentioned multiple destination IDs and the destination ID (used to identify the second service) whose first resource has an intersection in the time domain, that is, the activation period corresponding to the last selected destination ID has an intersection with the reserved resources in the time domain.

[0034] Based on the third aspect, in some possible implementations, in order to improve the matching degree between the reserved resources and the DRX activation period of the first service, the first communication device may also perform resource exclusion. When performing resource exclusion within the selection window, the MAC layer of the first communication device first indicates to the physical layer the union of the DRX activation periods corresponding to the first service and / or the union of the DRX activation periods corresponding to the current service in the first service and the non-periodic service in the historical service, that is, the second activation period. Then, the physical layer performs resource exclusion from the second resources and determines the resources that have an intersection with the above-mentioned union as the third candidate resource. That is to say, the third candidate resource needs to meet at least one of the following conditions: there is an intersection with the union of the DRX activation periods corresponding to the first service in the time domain; there is an intersection with the union of the DRX activation periods corresponding to the current service in the first service and the non-periodic service in the historical service in the time domain. It can be understood that the third candidate resource can be used as the above-mentioned first candidate resource. Of course, the physical layer can also further perform the method described in S803 from the third candidate resource to determine the first candidate resource, which is not specifically limited in the embodiment of the present application.

[0035] In the present application, the second resource may be a resource corresponding to a resource determined by the physical layer through sensing in the selection window, or may be a resource corresponding to a resource in the selection window after the physical layer excludes resources determined by sensing.

[0036] In a fourth aspect, the present application provides a communication method that can be applied to a communication system, and the communication system can be applied to a side link communication system, such as a vehicle networking system. The method may include: a first communication device determines a fourth resource; the first communication device determines a third candidate resource from the fourth resource; here, the third candidate resource needs to meet at least one of the following conditions: there is an intersection with the union of the DRX activation periods corresponding to the first service in the time domain; there is an intersection with the union of the DRX activation periods corresponding to the current service in the first service and the non-periodic service in the historical service in the time domain.

[0037] Based on the fourth aspect, in some possible implementations, when the first communication device performs resource exclusion within the selection window, the MAC layer of the first communication device first indicates to the physical layer the union of the DRX activation periods corresponding to the first service and / or the union of the DRX activation periods corresponding to the current service in the first service and the non-periodic service in the historical service, that is, the first activation period. Then, the physical layer excludes resources from the fourth resource and determines the resource that intersects with the above union as the third candidate resource. That is, the third candidate resource needs to meet at least one of the following conditions: intersect with the union of the DRX activation periods corresponding to the first service in the time domain; intersect with the union of the DRX activation periods corresponding to the current service in the first service and the non-periodic service in the historical service in the time domain.

[0038] In the present application, the physical layer may further exclude resources from the third candidate resources, which is not specifically limited in the embodiments of the present application.

[0039] In the present application, the fourth resource may be a resource in the selection window, or may be a resource remaining after excluding resources in the selection window.

[0040] In the present application, the first communication device selects resources that overlap with the DRX activation period corresponding to the first service as reserved resources, and uses the reserved resources for side link transmission. This ensures that the first communication device can receive transmissions from the second communication device (such as TX UE) during the activation period, saves power consumption of the RX UE, and ensures side link transmission between the first communication device and the second communication device.

[0041] Based on the fourth aspect, in some possible implementations, in order to improve the matching degree between the reserved resources and the DRX activation period of the first service, the above method also includes: the first communication device determines the first activation period; the first communication device monitors the SCI during the first activation period.

[0042] Here, SCI is used to indicate resources used by other UEs for sidelink transmission.

[0043] In the present application, after determining the second activation period, the MAC layer of the first communication device indicates the second activation period to the physical layer of the first communication device. The physical layer monitors the SCI sent by other UEs during the second activation period, and then the physical layer performs measurements during the first activation period.

[0044] Based on the fourth aspect, in some possible implementations, the first communication device determines a union of DRX activation periods in the time domain in at least one DRX configuration, that is, a first activation period, where the at least one DRX configuration may be part or all of the DRX configurations that can be determined by the first communication device. It is understandable that the at least one DRX configuration may include a DRX configuration for the first service.

[0045] Based on the fourth aspect, in some possible implementations, in order to improve the matching degree between the reserved resources and the DRX activation period of the first service, the first communication device can also determine a third candidate resource and the first service for side link transmission; the first communication device determines a fifth resource from the third candidate resource.

[0046] Based on the fourth aspect, in some possible implementations, the first communication device determines the first resource from the third candidate resources, including: the first communication device determines the resource in the third candidate resources that intersects with the first activation period in the time domain as the fourth candidate resource; the first communication device determines the first resource from the fourth candidate resources.

[0047] Based on the fourth aspect, in some possible implementations, the first communication device determines the resources among the third candidate resources that intersect with the first activation period in the time domain as fourth candidate resources, including: the first communication device determines the resources among the third candidate resources that are included in the first activation period in the time domain as fourth candidate resources.

[0048] Based on the fourth aspect, in some possible implementations, in order to improve the matching degree between the reserved resources and the DRX activation period of the first service, in the scenario of multiple destination IDs, the first communication device may further select the first service, that is, the communication target, before using the fifth resource to start side link transmission. At this time, the first communication device may select a destination ID whose corresponding DRX activation period overlaps with the fifth resource in the time domain from multiple destination IDs, and the communication target identified by the selected destination ID is the selected second service, that is, the DRX activation period corresponding to the last selected destination ID overlaps with the reserved resources in the time domain.

[0049] In a fifth aspect, the present application provides a communication method that can be applied to a communication system, and the communication system can be applied to a sidelink communication system, such as a vehicle networking system. The method may include: a first communication device determines a second activation period, the second activation period being the union of DRX activation periods in at least one discontinuous reception DRX configuration in the time domain; the first communication device monitors sidelink control information SCI during the second activation period, the SCI being used to indicate resources used by other communication devices for sidelink transmission;

[0050] Further, the first communications device performs measurement during the second activation period according to the SCI.

[0051] Based on the fifth aspect, in some possible implementations, at least one DRX configuration includes a DRX configuration for the first service.

[0052] In the sixth aspect, an embodiment of the present application provides a communication method that can be applied to a communication system, and the communication system can be applied to a side link communication system, such as a vehicle networking system. The method may include: a first communication device determines a fourth resource for side link transmission; the first communication device determines a third candidate resource from the fourth resource, and the third candidate resource satisfies at least one of the following conditions: there is an intersection in the time domain with the union of the discontinuous reception DRX activation period corresponding to the first service, and the first service includes the current service and / or the historical service; there is an intersection in the time domain with the union of the DRX activation period corresponding to the non-periodic service in the current service and the historical service; wherein the third candidate resource is used to determine the fifth resource for side link transmission.

[0053] Based on the sixth aspect, in some possible implementations, the DRX activation period corresponding to the first service includes at least one of the following: a DRX activation period corresponding to the communication target, a DRX activation period corresponding to the side link connection, a DRX activation period corresponding to the logical channel, a DRX activation period corresponding to the resource pool, a DRX activation period corresponding to the side link service, a DRX activation period corresponding to the media access control layer protocol data unit MAC PDU, and a DRX activation period corresponding to the transport block TB.

[0054] In a seventh aspect, an embodiment of the present application provides a communication method that can be applied to a communication system, and the communication system can be applied to a side link communication system, such as a vehicle networking system. The method may include: a first communication device determines a third resource for side link transmission; if the third resource does not have an intersection with the discontinuous reception DRX activation period corresponding to the fourth service of the first communication device, the first communication device triggers resource reselection.

[0055] Based on the seventh aspect, in some possible implementations, the DRX activation periods corresponding to the third resource and the fourth service do not have an intersection, including: the union of the third resource and multiple DRX activation periods corresponding to the fourth service does not have an intersection; or, the third resource and at least one of the multiple DRX activation periods corresponding to the first service do not have an intersection; or, the third resource and the DRX activation periods that meet a preset number of DRX activation periods do not have an intersection.

[0056] Based on the seventh aspect, in some possible implementations, the DRX activation period corresponding to the first service includes at least one of the following: a DRX activation period corresponding to the communication target, a DRX activation period corresponding to the side link connection, a DRX activation period corresponding to the source and target pair, a DRX activation period corresponding to the side link link, a DRX activation period corresponding to the logical channel, a DRX activation period corresponding to the resource pool, a DRX activation period corresponding to the side link service, a DRX activation period corresponding to the media access control layer protocol data unit MAC PDU, and a DRX activation period corresponding to the transport block TB.

[0057] Based on the seventh aspect, in some possible implementations, the first communication device can also configure a period for the third resource. Then, the first communication device can configure the DRX cycle (ie, DRX cycle) that meets the second condition in the DRX configuration corresponding to the fourth service as the period corresponding to the third resource.

[0058] Here, the second condition may include: the minimum value of the DRX cycle in the DRX configuration corresponding to the fourth service, the DRX cycle in the DRX configuration corresponding to the first service is less than a preset threshold, the DRX cycle in the DRX configuration corresponding to the fourth service is less than 20%, etc. The second condition can also be other conditions, which are not specifically limited in the embodiments of the present application.

[0059] In an embodiment of the present application, by selecting the period of the first resource as the minimum period of all DRX configurations corresponding to the fourth service, so that the period of the first communication device waking up to listen to SCI matches the period sent by the fourth service, the probability of side link resources being effectively utilized is improved.

[0060] In the present application, in the first to sixth aspects and any possible implementation manners thereof, the first communication device may perform the method described in the seventh aspect and any possible implementation manners thereof when evaluating the selected third resource. The first communication device may evaluate the third resource (i.e., the reserved resource selected by the first communication device), and if the first communication device determines that the third resource does not have an intersection with the DRX activation period corresponding to the fourth service of the first communication device, the first communication device triggers resource reselection to reselect a resource that has an intersection with the DRX activation period of the first service.

[0061] In an eighth aspect, an embodiment of the present application provides a communication method that can be applied to a communication system, and the communication system can be applied to a side link communication system, such as a vehicle networking system. The method may include: a first communication device can configure a cycle for a resource, then the first communication device can configure a DRX cycle (i.e., a DRX cycle) that satisfies a second condition in a DRX configuration corresponding to a fifth service of the first communication device as a cycle corresponding to the resource.

[0062] Here, the second condition may include: the minimum value of the DRX cycle in the DRX configuration corresponding to the fifth service, the DRX cycle in the DRX configuration corresponding to the first service is less than a preset threshold, the DRX cycle in the DRX configuration corresponding to the first service is less than 20%, etc. The second condition can also be other conditions, and the embodiments of the present application do not make specific limitations.

[0063] In the present application, the first communication device selects the period for selecting resources as the minimum period of all DRX configurations corresponding to the fifth service, so that the period for the first communication device to wake up and listen to SCI matches the period for sending the fifth service, thereby improving the probability of side link resources being effectively utilized.

[0064] In the present application, in the first to seventh aspects and any possible implementation manners thereof, the first communication device may execute the method described in the eighth aspect and any possible implementation manner thereof during a resource configuration period.

[0065] In a ninth aspect, an embodiment of the present application provides a communication method that can be applied to a communication system, and the communication system can be applied to a side link communication system, such as a vehicle networking system. The method may include: a first communication device determines that a first resource pool or a resource in the first resource pool satisfies a third condition; the first communication device performs DRX configuration, and / or the first communication device instructs the second communication device to perform DRX configuration, so that the first communication device selects a resource pool that can be used for side link transmission.

[0066] Here, the first resource pool is a resource pool currently selected by the first communication device;

[0067] Based on the ninth aspect, in some possible implementations, the third condition includes: the channel busy ratio (CBR) of the current resource pool satisfies the fourth condition, such as the fourth condition may be that the CBR is greater than a preset value (which may be an empirical value) or the CBR is within a preset range, the first communication device triggers resource pool reselection and / or the packet loss rate satisfies the fifth condition, such as the fifth condition may be that the packet loss rate is greater than a preset value (which may be an empirical value) or the packet loss rate is within a preset range, etc.

[0068] In some possible implementations, the third condition may further include one or a combination of the following conditions: the CBR satisfies the fourth condition and reaches the first threshold, the number of times the first communication device triggers resource pool reselection reaches the second threshold, and the number of times the packet loss rate of the second communication device satisfies the fifth condition reaches the third threshold. The first threshold, the second threshold, and the third threshold may be empirical values.

[0069] In the present application, after the first communication device determines that the first resource pool or the resources in the first resource pool meet the third condition, DRX configuration is performed so that the first communication device selects a resource pool that can be used for side link transmission.

[0070] It should be noted that the "DRX configuration" mentioned here can be understood as DRX configuration based on reserved resources. For example, DRX reconfiguration is performed based on the reserved resources so that the reserved resources intersect with the reconfigured DRX activation period in the time domain; or, DRX initial configuration is performed based on the reserved resources so that the reserved resources intersect with the configured DRX activation period in the time domain.

[0071] In the present application, after the first communication device determines that the first resource pool or the resources in the first resource pool meet the third condition, it instructs the second communication device to select a resource pool that can be used for sidelink transmission.

[0072] Based on the ninth aspect, in some possible implementations, the first communication device sends a first indication message to the second communication device, and the first indication message is used to notify the second communication device that the current resource pool of the first communication device or the resources in the current resource pool meet the third condition; or, the first communication device sends a second indication message to the second communication device, and the second indication message is used to instruct the second communication device to perform DRX configuration; and / or, the first communication device sends a third indication message to the second communication device, and the third indication message is used to indicate DRX configuration information.

[0073] Based on the ninth aspect, in some possible implementations, if the first communication device is a TX UE, the first communication device may also receive a fourth indication message from the second communication device (RX UE), and the fourth indication message is used to indicate the packet loss rate or the packet loss rate satisfies the fifth condition. For example, the fifth condition may be that the packet loss rate is greater than a preset value (which may be an empirical value), or the packet loss rate is within a preset range, etc.

[0074] In a tenth aspect, the present application provides a communication method that can be applied to a communication system, and the communication system can be applied to a side link communication system, such as a vehicle networking system. The method may include: if the first discontinuous reception DRX configuration information does not match the first resource configuration information, the first communication device sends the first information to the second communication device, and / or sends the second information to the third communication device; wherein the first DRX configuration information is used for the first side link corresponding to the first communication device, the first resource configuration information is used for the second side link corresponding to the first communication device, the first information is used to instruct the second communication device to perform DRX configuration for the first side link, and the second information is used to instruct the third communication device to perform resource configuration for the second side link.

[0075] In some possible implementations, the first side link may be one or more side links, and the second side link may also be one or more side links. It should be noted that when the first side link is one side link, the second side link and the first side link may be the same side link, or the second side link and the first side link may be different side links, and when the first side link is multiple side links, the second side link may be one or more of the first side links, that is, the second side link is part of the side links or all of the side links in the first side link.

[0076] In some possible implementations, since the DRX configuration information and the resource configuration information are configured by different entities, the DRX activation period indicated by the first DRX configuration information and the time area indicated by the first resource configuration information may conflict within one or more time periods. At this time, it can be said that the first DRX configuration information does not match the first resource configuration information.

[0077] Optionally, the above-mentioned “a time period” may refer to a time slot corresponding to a time domain interval that has occurred, or may refer to a time slot corresponding to a time domain interval that has not occurred.

[0078] Further, the DRX activation period indicated by the first DRX configuration information and the time domain interval indicated by the first resource configuration information conflict within a time period, including: the number of time slots overlapped by n DRX activation periods and the time domain interval is less than a preset threshold, where n is a positive integer. For example, the number of time slots overlapped by n DRX activation periods and the time domain interval is less than a preset threshold, including: the number of overlapping time slots divided by n times the number of time slots of the DRX activation period is less than a preset threshold.

[0079] In the present application, when the first communication device determines that the SL resources do not match the SL DRX, it sends first information to the second communication device and / or sends second information to the third communication device so that the SL resources configured by the second communication device and / or the third communication device match the SL DRX.

[0080] Based on the tenth aspect, in some possible implementations, the first resource configuration information is the current resource configuration information of the first communication device; the above method also includes: the first communication device receives first DRX configuration information from the second communication device; the first communication device determines that the first DRX configuration information does not match the first resource configuration information.

[0081] Based on the tenth aspect, in some possible implementations, the first communication device is a sending terminal device, the second communication device is a receiving terminal device, and the third communication device is a network device to which the sending terminal device belongs; wherein the first resource configuration information can be used to indicate the resources configured by the base station for the sending terminal device in mode1, and can also be used to indicate the resource pool corresponding to the sending terminal device in mode2.

[0082] Based on the tenth aspect, in some possible implementations, the first communication device is a receiving terminal device, the second communication device is a sending terminal device, and the third communication device is a network device to which the receiving terminal device belongs; wherein the first resource configuration information is used to indicate the receiving resources corresponding to the receiving terminal device in mode2, and the receiving resources are used for the first side link.

[0083] Based on the tenth aspect, in some possible implementations, the first communication device is a receiving terminal device, the third communication device is a sending terminal device, and the second communication device is a network device to which the receiving terminal device belongs; wherein the first resource configuration information includes resource configuration information for instructing the receiving terminal device to perform perception.

[0084] Furthermore, the first communication device may be an auxiliary user device, the second communication device may be a network device to which the auxiliary user device belongs, and the third communication device may be an assisted user device; wherein the first resource configuration information includes resource configuration information for instructing the first communication device to perform perception.

[0085] Based on the tenth aspect, in some possible implementations, the first communication device is a receiving terminal device, the second communication device is a sending terminal device, and the third communication device is a network device to which the receiving terminal device belongs; the first resource configuration information is used for the receiving terminal device as a second side link between the sending terminal device and other terminal devices (i.e., the fourth communication device), and the first resource configuration information is used to instruct the receiving terminal device to send side link data on the second side link. It can also be understood that the first resource configuration information is used to instruct the receiving terminal device to send side link data to other terminal devices.

[0086] Based on the tenth aspect, in some possible implementations, the first communication device is a receiving terminal device, the second communication device is a network device to which the receiving terminal device belongs, and the third communication device is a sending terminal device; wherein the first resource configuration information is used to indicate one or more resource sets corresponding to the receiving terminal device.

[0087] Furthermore, the first communication device may be an assisted user device, the second communication device may be a network device to which the assisted user device belongs, and the third communication device may be an assisting user device; wherein the first resource configuration information is used to indicate one or more resource sets corresponding to the assisted user device.

[0088] Based on the tenth aspect, in some possible implementations, the first communication device sends second information to the third communication device, including: the first communication device sends mode switching request information to the third communication device, the mode switching request information is used to request the third communication device to switch the resource allocation mode of the first communication device from the first mode to the second mode; or, the first communication device sends resource configuration request information to the third communication device; wherein the resource configuration request information includes at least one of the following: a request reason indicating that the DRX configuration information does not match the resource configuration information, the first DRX configuration information, identification information corresponding to the first DRX configuration information, expected resource configuration information or resource adjustment amount.

[0089] Optionally, the resource allocation mode of the first communication device includes mode1 and mode2. If the first mode is mode1, the second mode is mode2; or, if the first mode is mode2, the second resource is mode1.

[0090] Among them, in mode 1, the base station allocates SL transmission resources to the sending terminal device through scheduling; in mode 2, the terminal device independently selects transmission resources from the pre-configured or base station configured resource pool as needed, and no scheduling by the base station is required.

[0091] In some possible implementations, the first communication device sending the first information to the second communication device may include: the first communication device sending DRX configuration failure information to the second communication device.

[0092] Exemplarily, the DRX configuration failure information includes at least one of the following: third information for indicating DRX configuration failure, identification information corresponding to the DRX configuration information, a configuration failure type for indicating that the DRX configuration information does not match the resource configuration information, an effective duration for not allowing the second communication device to configure DRX for the first communication device, the first resource configuration information, the expected DRX configuration information, the DRX adjustment amount and the corresponding identification information.

[0093] Based on the tenth aspect, in some possible implementations, the first communication device sends DRX configuration failure information to the second communication device, including: the first communication device receives DRX configuration failure information sent by the third communication device; the first communication device sends DRX configuration failure information to the second communication device; or, the first communication device starts a timer after sending resource configuration request information to the third communication device; when the timer times out and the first communication device has not received the resource configuration information sent by the third communication device, the first communication device sends DRX configuration failure information to the second communication device.

[0094] In some possible implementations, the DRX configuration failure information is further used to trigger the second communication device to send fourth information to the network device to which the second communication device belongs, where the fourth information is used to indicate that the DRX configuration corresponding to the first side link has failed.

[0095] It can be understood that the fourth information can be the above-mentioned DRX configuration failure information, that is, the receiving terminal device forwards the DRX configuration failure information to the base station to which it belongs, or the fourth information can also include indication information generated by the receiving terminal device based on the DRX configuration failure information to indicate that the DRX configuration corresponding to the first side link has failed.

[0096] The above-mentioned identification information may include at least one of the following: target identifier, source identifier, side link connection identifier, source and target identifier pair, side link link identifier, logical channel identifier, resource pool identifier, side link service identifier, media access control layer protocol data unit MAC PDU identifier, and transmission block TB identifier.

[0097] Based on the tenth aspect, in some possible implementations, the first communication device sends first information to the second communication device, and sends second information to the third communication device, including: the first communication device sends resource configuration request information to the third communication device, and sends DRX configuration failure information to the second communication device.

[0098] Based on the tenth aspect, in some possible implementations, the first DRX configuration information is the current DRX configuration information of the first communication device; the above method also includes: the first communication device receives first resource configuration information from a third communication device; the first communication device determines that the first DRX configuration information does not match the first resource configuration information.

[0099] Based on the tenth aspect, in some possible implementations, the first communication device is a sending terminal device, the second communication device is a receiving terminal device, and the third communication device is a network device to which the sending terminal device belongs; wherein the first resource configuration information can be used to indicate the resources configured by the base station for the sending terminal device in mode1, and can also be used to indicate the resource pool corresponding to the sending terminal device in mode2.

[0100] Based on the tenth aspect, in some possible implementations, the first communication device is a receiving terminal device, the second communication device is a network device to which the receiving terminal device belongs, and the third communication device is a receiving terminal device. The first resource configuration information is used to indicate the receiving resources corresponding to the sending terminal device in mode2.

[0101] Based on the tenth aspect, in some possible implementations, the first communication device is a receiving terminal device, the second communication device is a network device of the receiving terminal device, and the third communication device is a sending terminal device; wherein the first resource configuration information includes resource configuration information for instructing the receiving terminal device to perform perception.

[0102] Furthermore, the first communication device may be an assisted user device, the second communication device may be a network device to which the assisted user device belongs, and the third communication device may be an assisting user device; wherein the first resource configuration information includes resource configuration information for instructing the first communication device to perform perception.

[0103] Based on the tenth aspect, in some possible implementations, the first communication device is a receiving terminal device, the second communication device is a sending terminal device, and the third communication device is a network device to which the receiving terminal device belongs; wherein the first resource configuration information is used for the receiving terminal device to send side link data on the second side link between the receiving terminal device and other terminal devices (i.e., the fourth communication device). It can also be understood that the first resource configuration information is used for the receiving terminal device to send side link data to other terminal devices.

[0104] Based on the tenth aspect, in some possible implementations, the first communication device is a receiving terminal device, the second communication device is a network device to which the receiving terminal device belongs, and the third communication device is a sending terminal device; wherein the first resource configuration information is used to indicate one or more resource sets corresponding to the receiving terminal device.

[0105] Further, the first communication device is an assisted user equipment, the second communication device is a network device to which the assisted user equipment belongs, and the third communication device is an assisting user equipment.

[0106] Based on the tenth aspect, in some possible implementations, the first communication device sends second information to the third communication device, including: the first communication device sends mode switching request information to the third communication device, the mode switching request information is used to request the third communication device to switch the resource allocation mode of the first communication device from the first mode to the second mode and configure resources for the first communication device according to the second mode; or, the first communication device sends resource configuration failure information to the third communication device, wherein the resource configuration failure information includes at least one of the following: fifth information for indicating resource configuration failure, a configuration failure type for indicating that the resource configuration information does not match the DRX configuration information, the first DRX configuration information, identification information corresponding to the first DRX configuration information, expected resource configuration information, or resource adjustment amount.

[0107] Optionally, the resource allocation mode of the first communication device includes mode1 and mode2. If the first mode is mode1, the second mode is mode2; or, if the first mode is mode2, the second resource is mode1.

[0108] Among them, in mode 1, the base station allocates SL transmission resources to the sending terminal device through scheduling; in mode 2, the terminal device independently selects transmission resources from the pre-configured or base station configured resource pool as needed, and no scheduling by the base station is required.

[0109] Based on the tenth aspect, in some possible implementations, the first communication device sends first information to the second communication device, including: the first communication device sends DRX configuration request information to the third communication device; wherein the DRX configuration request information includes at least one of the following: a request reason indicating that the DRX configuration information does not match the resource configuration information, the first resource configuration information, the expected DRX configuration or the DRX adjustment amount.

[0110] Based on the tenth aspect, in some possible implementations, the first communication device sends first information to the second communication device, and sends second information to the third communication device, including: the first communication device sends resource configuration failure information to the second communication device, and sends DRX configuration request information to the third communication device.

[0111] In an eleventh aspect, the present application provides a communication device, which is used to execute the communication method as described in the first to tenth aspects and any possible implementation manner thereof.

[0112] In the twelfth aspect, the present application provides a communication device, comprising: a processor and a memory; the processor is coupled to the memory, and the processor is configured to read and execute instructions in the memory to implement the communication method as described in the first to tenth aspects and any possible implementation methods thereof.

[0113] In a thirteenth aspect, the present application provides a communication system, comprising: a communication device as described in the twelfth aspect and any possible implementation manner thereof.

[0114] In a fourteenth aspect, the present application provides a computer-readable storage medium having a computer program or instructions stored thereon. When the computer program or instructions are executed, the computer executes the communication method as described in aspects one to ten and any possible implementation manner thereof.

[0115] It should be understood that the eleventh to fourteenth aspects of the present application are consistent with the technical solutions of the first to tenth aspects of the present application, and the beneficial effects achieved by each aspect and the corresponding feasible implementation methods are similar and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0116] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the background technology, the drawings required for use in the embodiments of the present application or the background technology will be described below.

[0117] Figure 1 A schematic diagram of the architecture of a communication system in an embodiment of the present application;

[0118] Figure 2 Another schematic diagram of the architecture of the communication system in the embodiment of the present application;

[0119] Figure 3 A flow chart of a communication method in a scenario where a UE autonomously selects resources in an embodiment of the present application;

[0120] Figure 4 This is a first schematic diagram of resources and DRX activation period in an embodiment of the present application;

[0121] Figure 5 This is a second schematic diagram of resources and DRX activation period in an embodiment of the present application;

[0122] Figure 6 This is a third schematic diagram of resources and DRX activation period in an embodiment of the present application;

[0123] Figure 7A first flow chart of a first communication device side communication method in an embodiment of the present application;

[0124] Figure 8 A second flow chart of the communication method on the first communication device side in an embodiment of the present application;

[0125] Fig. 9 A third flow chart of the communication method on the first communication device side in an embodiment of the present application;

[0126] Fig.10 A schematic diagram of the DRX activation period corresponding to the resources and the current service in an embodiment of the present application;

[0127] Fig.11 A flow chart of a communication method in an embodiment of the present application;

[0128] Fig.12 A schematic diagram of the structure of a communication device in an embodiment of the present application;

[0129] Fig.13 Another structural diagram of a communication device in an embodiment of the present application;

[0130] Fig.14 It is another schematic diagram of the architecture of the communication system in the embodiment of the present application;

[0131] Fig.15 A fourth flow chart of the communication method on the first communication device side in an embodiment of the present application;

[0132] Fig.16 This is a schematic diagram of a first scenario of resource configuration and DRX configuration in an embodiment of the present application;

[0133] Fig.17 A schematic diagram of a second scenario of resource configuration and DRX configuration in an embodiment of the present application;

[0134] Fig.18 A schematic diagram of a third scenario of resource configuration and DRX configuration in an embodiment of the present application;

[0135] Fig.19 This is a schematic diagram of a fourth scenario of resource configuration and DRX configuration in an embodiment of the present application;

[0136] Fig. 20 A fifth scenario schematic diagram of resource configuration and DRX configuration in an embodiment of the present application;

[0137] Fig.21 A fifth flow chart of the communication method on the first communication device side in an embodiment of the present application;

[0138] Fig. 22A sixth scenario schematic diagram of resource configuration and DRX configuration in an embodiment of the present application;

[0139] Fig.23 A seventh scenario schematic diagram of resource configuration and DRX configuration in an embodiment of the present application;

[0140] Fig.24 This is a schematic diagram of an eighth scenario of resource configuration and DRX configuration in an embodiment of the present application;

[0141] Fig.25 A ninth scenario schematic diagram of resource configuration and DRX configuration in an embodiment of the present application;

[0142] Fig.26 A schematic diagram of the tenth scenario of resource configuration and DRX configuration in an embodiment of the present application;

[0143] Fig. 27 This is another structural diagram of a communication device in an embodiment of the present application. DETAILED DESCRIPTION

[0144] The embodiments of the present application are described below in conjunction with the drawings in the embodiments of the present application. In the following description, reference is made to the drawings that form a part of the present application and show specific aspects of the embodiments of the present application or specific aspects of the embodiments of the present application in an illustrative manner. It should be understood that the embodiments of the present application can be used in other aspects and may include structural or logical changes not depicted in the drawings. For example, it should be understood that the disclosure of the described method in conjunction with the disclosed content can also be applied to the corresponding device or system for performing the method, and vice versa. For example, if one or more specific method steps are described, the corresponding device may include one or more units such as functional units to perform the one or more method steps described (for example, one unit performs one or more steps, or multiple units, each of which performs one or more of the multiple steps), even if such one or more units are not explicitly described or illustrated in the drawings. On the other hand, for example, if a specific device is described based on one or more units such as functional units, the corresponding method may include a step to perform the functionality of one or more units (for example, one step performs the functionality of one or more units, or multiple steps, each of which performs the functionality of one or more units in multiple units), even if such one or more steps are not explicitly described or illustrated in the drawings. Further, it should be understood that, unless explicitly stated otherwise, features of the various exemplary embodiments and / or aspects described herein may be combined with each other.

[0145] The new radio (NR) system is the current mainstream wireless communication technology. It targets the vehicle to everything (V2X) service characteristics and new service transmission requirements, and aims to support V2X communication with lower latency and higher reliability. However, in the sidelink (SL), the receiving user equipment (RX UE) will always listen to the SCI to see if there is any information from the transmitting user equipment (TX UE). However, in the sidelink, there is not always service transmission between the RX UE and the TX UE. So, when there is no data exchange between the transmitting and receiving UEs, if the RX UE continues to listen to the SCI, the power consumption of the RX UE will increase.

[0146] Then, in order to solve the problem of high power consumption caused by UE continuously monitoring SCI in the side link, an embodiment of the present application provides a communication method, which can be applied to a communication system, which can be a side link communication system, and the side link communication system can be adapted to the fields of vehicle to everything (V2X), intelligent connected vehicles and self-driving vehicles. The above communication system may include at least one communication device. In one scenario, Figure 1 This is a schematic diagram of the architecture of the communication system in the embodiment of the present application, see Figure 1 As shown, the communication system 10 may include: a network device 11 and a terminal device 12. In another scenario, Figure 2 Another schematic diagram of the architecture of the communication system in the embodiment of the present application is shown in FIG. Figure 2 As shown, the communication system 10 may also include a plurality of terminal devices 12. Of course, in the embodiment of the present application, the type and quantity of network elements included in the communication system, and the connection relationship between the network elements are not limited thereto.

[0147] In the embodiment of the present application, the terminal device can communicate with other terminal devices while communicating with the network device. The network device can configure, schedule, coordinate, etc. the resources of the sidelink for communication between terminal devices to assist the direct communication between terminal devices. The terminal device can also configure, schedule, coordinate, etc. the resources of the sidelink for communication between other terminal devices by itself, which is not specifically limited in the embodiment of the present application.

[0148] In some possible implementations, the above-mentioned network device may be a device on the access network side used to support the terminal to access the wireless communication system, for example, it may be a next generation base station (next generation NodeB, gNB), a transmission reception point (transmission reception point, TRP), a relay node (relay node), an access point (access point, AP), a roadside unit (road site unit, RSU), etc. in a 5G access technology communication system.

[0149] The terminal device may be a device that provides voice or data connectivity to a user, for example, it may also be called user equipment (UE), mobile station, subscriber unit, station or terminal equipment (TE), etc. The communication device may be a cellular phone, a personal digital assistant (PDA), a wireless modem, a handheld V2P device (handheld vehicle to passenger destination), a laptop computer, a cordless phone, a wireless local loop (WLL) station or a tablet computer (pad), a relay node, an AP, etc. With the development of wireless communication technology, devices that can access a wireless communication system, communicate with the network side of a wireless communication system, or communicate with other devices through a wireless communication system can all be terminal devices in the embodiments of the present application, for example, terminals, cars or RSUs in intelligent transportation, household devices in smart homes, power meter reading instruments, voltage monitoring instruments, environmental monitoring instruments in smart grids, video monitoring instruments in intelligent security networks, cash registers, etc. Communication equipment can be static or mobile.

[0150] Furthermore, in the side link transmission scenario, the above communication devices (which may include terminal devices and / or network devices) can be divided into transmitting devices and receiving devices according to the data transmission direction. The transmitting devices may include transmitting network devices, transmitting terminal devices, transmitting user devices, etc.; the receiving devices may include receiving network devices, receiving terminal devices, receiving user devices, etc.

[0151] It should be noted that the above-mentioned transmitting end device (or transmitting end network device, transmitting terminal device, transmitting end user device, etc.) and receiving end device (or receiving end network device, receiving terminal device, receiving end user device, etc.) are for a certain side link connection (sidelink connection). For example, a communication device (or network device, terminal device, user device, etc.) can be a transmitting end device (or transmitting end network device, transmitting terminal device, transmitting end user device, etc.) for side link connection A; and for side link connection B, the communication device (or network device, terminal device, user device, etc.) can be a receiving end device (or receiving end network device, receiving terminal device, receiving end user device, etc.).

[0152] The communication method provided in the embodiment of the present application is described below in conjunction with the above-mentioned communication system.

[0153] In NR SL, network equipment, such as a base station, configures a resource pool for the SL communication of the UE. A resource pool is a collection of time-frequency resources. The resources for the UE to communicate on the SL link are determined from the resource pool pre-configured or configured on the base station side. Specifically, there are two modes for the TX UE to obtain transmission resources for communication on the SL link from the network equipment, namely mode 1 and mode 2. Among them, the above-mentioned pre-configured resources can be obtained from the network elements of the core network, or they can be preset in the UE.

[0154] In mode1, the base station allocates SL transmission resources to the TX UE through scheduling. In this mode, when the TX UE has SL data to be transmitted, it reports the SL buffer status report (BSR) MAC CE to the base station through the Uu port to inform the base station of the current amount of data to be transmitted by the TX UE at the PC5 port. The base station can dynamically allocate transmission resources for the TX UE.

[0155] In mode 2, the UE autonomously selects transmission resources from a pre-configured or base station-configured resource pool as needed, without the need for scheduling by the base station. The SL resources determined by the UE are configured by the base station (such as through RRC signaling configuration or system information block (SIB) configuration) or pre-configured. The pre-configuration mentioned here can be obtained from the network element of the core network or preset in the UE.

[0156] In the scenario where UE autonomously selects resources (i.e., mode 2), the TX UE performs a resource selection and selects at least one resource (usually including 1 to 3 resources for one transmission opportunity and their corresponding periodic resources) for a service, such as a communication target (indicated by a destination ID, such as a destination L1 ID or a destination L2 ID), a side link connection (such as a radio resource control (RRC) connection), an SL link, a source and target pair (such as {source L2 / L1 ID, destination L2 / L1 ID}), a side link service, a logical channel, a resource pool, a transmission block (transformblock, TB), one or more medium access control layer packet data units (medium access control packet data unit, MAC PDU), etc. At least one resource is used for new transmission or retransmission of the service, and this at least one resource can also be called a reserved resource.

[0157] Figure 3 This is a flow chart of a communication method in a scenario where a UE autonomously selects resources in an embodiment of the present application, see Figure 3 As shown, the method may include:

[0158] S301: TX UE performs sensing;

[0159] The TX UE continuously monitors the SCI sent by other UEs, and performs measurements according to the instructions of the SCI to obtain measurement results. Here, after the TX UE monitors the SCI of other UEs, it demodulates the SCI, and the demodulated SCI can at least reflect the usage of resources on the sidelink.

[0160] In an embodiment of the present application, the above-mentioned "measurement" may include measurement of sidelink RSRP based on a sidelink demodulation reference signal (DMRS), for example, measurement of reference signal receiving power (RSRP) (i.e., PSCCH-RSRP) or PSSCH-RSRP of PSCCH; or, measurement of sidelink received signal strength indicator (S-RSSI) etc. PSCCH-RSRP is determined by measurement of DMRS associated with PSCCH, and PSSCH-RSRP is determined by measurement of DMRS associated with PSSCH. Of course, the UE may also measure other parameters of the resources indicated by the SCI, which is not specifically limited in the embodiment of the present application.

[0161] S302: The TX UE excludes resources indicated by the SCI according to the obtained measurement results, and determines a candidate resource set.

[0162] The TX UE excludes the resources whose measurement results meet a certain condition from the resources indicated by the SCI, thereby obtaining the candidate resource set of the TX UE. Then, the TX UE can select resources from the candidate resource set for transmission when transmitting services. For example, through S301, the TX UE measures the reference signal received power of the SCI to obtain the PSCCH-RSRP or PSSCH-RSRP, and then the TX UE can exclude the resources whose PSCCH-RSRP or PSSCH-RSRP meets the preset condition, or the TX UE can exclude the resources occupied by other UEs according to the indication of the SCI, and further, the TX UE can exclude the resources occupied by other UEs and whose RSRP is higher than the preset threshold value.

[0163] In practical applications, the above-mentioned preset condition may be that the RSRP value is within a preset range, for example, the RSRP value is in the top 20% of all measured RSRP values ​​after being sorted from large to small or from small to large, or the RSRP value is higher than 70% of all RSRP values. Of course, the above-mentioned preset condition may also be other conditions, such as being set according to the transmission priority of the TX UE and the transmission priority indicated in the SCI of other UEs, which is not specifically limited in the embodiments of the present application.

[0164] In some possible implementations, the TX UE may also demodulate the SCI through S301 to obtain the subcarrier spacing configuration of the resources, and the RX UE may also screen the resources according to the subcarrier spacing configuration of the resources so that the selected subcarrier spacing can meet the transmission requirements of the resources for subsequent side link transmission.

[0165] Of course, the TX UE may exclude resources based on other conditions, which are not specifically limited in this application.

[0166] S303: The TX UE selects resources for sidelink transmission from the candidate resource set;

[0167] Among them, the resources selected by the TX UE can be understood as reserved resources.

[0168] After the service arrives, the TX UE first performs a check for resource selection or resource reselection to determine whether to trigger resource selection or reselection; if resource selection or reselection is triggered, the TX UE determines the resource reservation period, the selected number of hybrid automatic repeat request (HARQ) retransmissions, etc.; then, the TX UE selects the time-frequency resources for one transmission opportunity from the candidate resource set based on the selected number of frequency domain resources and the remaining packet delay budget (PDB) of the available sidelink data of the logical channel allowed on the carrier. Further, the TX UE can also use the selected time domain resources to determine a good resource reservation period and then select the corresponding periodic resource set. If the TX UE determines that there is no retransmission, the time domain resources selected by the TX UE and its corresponding periodic resource set can be regarded as the "selected SL grant (authorization)".

[0169] Optionally, the TX UE determines that there are one or more retransmissions based on the number of HARQ retransmissions, and there are available resources in the resources indicated by the physical layer for multiple transmission opportunities, then selects time-frequency resources for one or more transmission opportunities from the available resources based on the selected number of frequency domain resources, the selected number of HARQ retransmissions, and the remaining PDB of the available SL data of the logical channel allowed on the carrier. Then, the corresponding periodic resource set is selected using the time-frequency resources and the resource reservation period, and the selected resources and their corresponding periodic resource set are regarded as the "selected SL grant" (resource)

[0170] In the embodiment of the present application, the service in the above S303 may include: a communication target, a sidelink connection (such as a source and target pair, a sidelink link, etc.), a logical channel, a resource pool (resourcepool), a sidelink service, a MAC PDU, a TB, etc., one or more of which are not specifically limited in the embodiment of the present application. When the service is a MAC PDU, the MAC PDU may be one or more. It should be noted that the above communication target can be identified by a destination ID (communication target identifier), which is not specifically limited in the present application.

[0171] S304: The TX UE re-evaluates the reserved resources;

[0172] Before performing service transmission, the TX UE will also re-evaluate the reserved resources to see whether the reserved resources selected in S303 can be used for side link transmission, so as to ensure that the resources finally selected can be used for side link transmission.

[0173] S305: If the evaluation result indicates that the reserved resources cannot be used for sidelink transmission, the TX UE triggers resource reselection and returns to S302;

[0174] S306: If the evaluation result indicates that the reserved resources can be used for side link transmission, the TX UE starts side link transmission using the reserved resources;

[0175] S307: During transmission using the reserved resources, the TX UE determines whether to trigger resource reselection;

[0176] In S305 and S307, the reserved resources may not be used for sidelink transmission due to some reasons. Therefore, the TX UE also needs to evaluate the first resource to determine whether to trigger resource reselection. For example, the above reasons may include: the upper layer configures or reconfigures the resource pool; or, there is no configured sidelink grant; or, in the past second, the MAC entity has neither new transmission nor retransmission on any resource indicated by the configured sidelink grant; or, sl-ReselectAfter is configured, and the number of consecutive unused transmission opportunities indicated by the configured sidelink grant reaches sl-ReselectAfter; or, the transmission resources indicated by the configured sidelink grant cannot meet the delay requirement of the data on a certain logical channel determined according to the priority of the corresponding logical channel, and the MAC entity chooses not to transmit the corresponding single MAC PDU; or, the priority of the logical channel indicated by the SCI received by the UE is higher than the priority of the logical channel of the data to be transmitted, and a certain sl transmission scheduled by the SCI is expected to overlap with a certain resource currently reserved, and the SL-RSRP measurement result of the sl transmission indicated by the SCI is higher than the threshold. When the first resource meets any of the above conditions, the reserved resources associated with the SL process (if any) are cleared, and TX resource selection / reselection is triggered.

[0177] S308: If resource reselection is triggered, the TX UE returns to S302;

[0178] S309: If resource reselection is not triggered, the TX UE continues to use the reserved resources for side link transmission.

[0179] Through the above process, the TX UE autonomously selects the resources for sidelink transmission. In order to save the power consumption of the RX UE, the DRX function can be configured for the RX UE. A DRX cycle (DRX cycle) can be divided into an activation period (on duration) and a sleep period (opportunity for DRX). The "on duration" period is the time when the UE monitors the downlink PSCCH and / or PSSCH subframes. During this period, the UE is in an awake state and can receive transmissions from the TX UE; the "opportunity for DRX" period is the DRX sleep time, that is, the UE enters the sleep state in order to save power, turns off its own receiver, and does not monitor the PSCCH and / or PSSCH subframes. This may result in the RX UE entering the sleep period if it does not monitor the SCI during the activation period, resulting in the RX UE being unable to receive the sidelink transmission on the resources selected by the TX UE.

[0180] In practical applications, the activation period in the DRX configuration may be periodic.

[0181] Then, in order to solve this problem, an embodiment of the present application provides a communication method, which can be applied to a first communication device in the above communication system, such as a TX UE.

[0182] First, it should be noted that the "resources and DRX activation period have an intersection in the time domain" in the embodiment of the present application can be understood as: the resources are completely or partially located within the time range of the DRX activation period in the time domain. Conversely, "the resources and DRX activation period do not have an intersection in the time domain" can be understood as: the resources are located outside the time range of the DRX activation period in the time domain, and the resources and the DRX activation period are separated in the time domain. For example, Figure 4 This is a first schematic diagram of resources and DRX activation period in the embodiment of the present application, see Figure 4 As shown, in the time domain, the resource is within the time range of the DRX activation period, that is, the resource is included in the DRX activation period; or, Figure 5 This is a second schematic diagram of resources and DRX activation period in the embodiment of the present application, see Figure 5 As shown, in the time domain, a portion of the resources, such as at least one symbol, is located in the DRX activation period; Figure 6 This is a third schematic diagram of resources and DRX activation period in the embodiment of the present application, see Figure 6 As shown, in the time domain, none of the resource symbols is located in the DRX activation period. In other embodiments of the present application, the relationship between the resource and the DRX activation period in the time domain can be seen in Figures 4 to 6 The description is not repeated below.

[0183] In the embodiments of the present application, "when" is only used to indicate the execution condition of the step, and does not limit the execution timing of the step. It can also be understood as "if" or "if".

[0184] In some possible implementations, the DRX configuration may be configured per service, and the DRX configuration information may include a DRX activation period. Here, "service" may be as described above, and may include: a communication target, a sidelink connection, a source and target pair, a sidelink link, a logical channel, a resource pool, a sidelink service, a MAC PDU, a TB, etc., one or more of which are not specifically limited in the embodiments of the present application.

[0185] Assume that the first service is a communication target identified by a destination ID as an example, and DRX configuration information can be configured for each destination ID. It can be understood that the DRX configuration can be configured by the base station for the UE, or can be determined by the TX UE or the RX UE itself, or can be negotiated and configured between the transmitting and receiving UEs, or can be pre-set in the UE, and the embodiments of the present application do not make specific limitations.

[0186] Figure 7 This is a first flow chart of the first communication method on the communication device side in the embodiment of the present application, see Figure 7 As shown, the method comprises:

[0187] S701: The first communication device performs sensing;

[0188] The first communication device continuously monitors the SCI sent by other UEs, and performs measurements according to the instructions of the SCI to obtain measurement results. Here, after the first communication device monitors the SCI of other UEs, it demodulates the SCI, and the demodulated SCI can at least reflect the usage of resources on the sidelink.

[0189] In the embodiment of the present application, the above-mentioned "measurement" may include the measurement of L1 sidelink RSRP based on sidelink DMRS, for example, measuring the RSRP of PSCCH (i.e., PSCCH-RSRP) or PSSCH-RSRP; or, S-RSSI, etc. may also be measured. PSCCH-RSRP is obtained by measuring the DMRS associated with PSCCH, and PSSCH-RSRP is obtained by measuring the DMRS associated with PSSCH. Of course, the first communication device may also measure other parameters of SCI, which is not specifically limited in the embodiment of the present application.

[0190] S702: The first communication device excludes resources indicated by the SCI according to the obtained measurement result.

[0191] The first communication device excludes the resources whose measurement results meet a certain condition from the resources indicated by the SCI, thereby obtaining the candidate resource set of the first communication device, and then, the first communication device can select resources from the candidate resource set for transmission when transmitting services. For example, through S701, the first communication device measures the reference signal received power of the SCI to obtain the PSCCH-RSRP or PSSCH-RSRP, and then, the first communication device can exclude the resources whose PSCCH-RSRP or PSSCH-RSRP meets the preset conditions, or, the first communication device can exclude the resources occupied by other UEs according to the indication of the SCI, and further, the first communication device can exclude the resources occupied by other UEs and whose corresponding RSRP is higher than the preset threshold value.

[0192] In practical applications, the above-mentioned preset condition may be that the RSRP value is within a preset range, for example, the RSRP value is in the top 20% of all measured RSRP values ​​after being sorted from large to small or from small to large, or, the RSRP value is higher than 70% of all RSRP values. Of course, the above-mentioned preset condition may also be other conditions, such as being set according to the transmission priority of the first communication device and the transmission priority indicated in the SCI of other UEs, and the embodiments of the present application do not make specific limitations.

[0193] In some possible implementations, the first communication device may also demodulate SCI through S701 to obtain the subcarrier spacing configuration of the resource. The first communication device may also screen the resources according to the subcarrier spacing configuration of the resource so that the selected subcarrier spacing satisfies the transmission requirements of the resource for use in subsequent side link transmission.

[0194] Of course, the first communication device may exclude resources according to other conditions, which is not specifically limited in this application.

[0195] S703: The first communication device determines a first candidate resource and a first service for side link transmission;

[0196] The first communication device determines the first candidate resource through S702, and obtains the first service that can be currently determined by itself, and the first service may include the current service and / or the historical service. Here, the "first service" may be as described above, assuming that, taking the first service as the communication target identified by the destination ID as an example, the first communication device may determine at least one destination ID as a candidate destination ID set, and the candidate destination ID set may include the currently selectable destination ID of the first communication device, and / or the historically selectable destination ID.

[0197] S704: The first communication device determines a first resource from the first candidate resources;

[0198] Since the DRX configuration is configured for the first service, the first communication device can select a resource that has an intersection with the first activation period from the first candidate resources as the second candidate resource, and then determine the first resource from the second selected resources. At this time, the first resource can be understood as a reserved resource.

[0199] In the embodiment of the present application, the first communication device may determine the first resource from the second candidate resources by using the method as described in S303.

[0200] In an embodiment of the present application, in order to achieve matching of resources with the DRX activation period of the first service, the above-mentioned first activation period may include at least one DRX activation period corresponding to the first service. For example, the first activation period may be a DRX activation period corresponding to one destination ID or a DRX activation period corresponding to multiple destination IDs.

[0201] It can be understood that if there are multiple destination IDs, the first activation period can be the union of multiple DRX activation periods in the DRX configurations corresponding to the multiple destinationIDs; then, the first communication device can select resources that intersect with the union from the first candidate resources as second candidate resources, and then, the first communication device can also select the first resource from the second candidate resources. For example, the first communication device selects some or all of the resources located in the union composed of the above-mentioned multiple DRX activation periods from the first candidate resources as the second candidate resources, and then selects the time-frequency resources for one transmission opportunity from the second candidate resources according to the selected number of frequency domain resources and the remaining PDB of the available side link data of the logical channel allowed on the carrier. The selected time domain resources can be further used to determine a good resource reservation period and then select the corresponding periodic resources.

[0202] Alternatively, if there is a destination ID, the first activation period may be multiple DRX activation periods in the DRX configuration corresponding to the destination ID, then the first communication device may select a resource whose intersection with the DRX activation period corresponding to the first service in the time domain satisfies the first condition as the second candidate resource.

[0203] In practical applications, the first condition may include: the intersection of the DRX activation periods corresponding to the first service in the time domain is the largest, the intersection of the DRX activation periods corresponding to the first service in the time domain is within a preset range (which may be an empirical value), the intersection of the DRX activation periods corresponding to the first service in the time domain is greater than a preset threshold, etc. For example, if the DRX activation period corresponding to a destination ID is subframe 0, then the first communication device determines the resource with the largest number of symbols in the intersection with subframe 0 in the first candidate resource as the second candidate resource, or the first communication device determines the resource with the largest number of symbols in the intersection with subframe 0 in the first candidate resource as the second candidate resource, or the first communication device determines the resource with the largest number of symbols in the intersection with subframe 0 in the first candidate resource as the second candidate resource, or the first communication device determines the resource with the largest number of symbols in the intersection with subframe 0 in the first candidate resource as the second candidate resource, or the first communication device determines the resource within symbol 1 to symbol 12 of subframe 0 in the first candidate resource as the second candidate resource. Similarly, if the DRX activation period corresponding to a destination ID is subframe 0, subframe 3, and subframe 6, then the first communication device determines multiple resources in the first candidate resources that have the largest intersection with subframe 0, subframe 3, and subframe 6 as second candidate resources, that is, select resource a with the largest intersection with subframe 0, resource b with the largest intersection with subframe 3, and resource c with the largest intersection with subframe 6 in the first candidate resources, and determine resources a, b, and c as second candidate resources; or, the first communication device determines multiple resources in the first candidate resources whose number of symbols in the intersection with subframe 0, subframe 3, and subframe 6 is greater than 80% as second candidate resources, or, the first communication device determines multiple resources in the first candidate resources that are located in symbols 1 to 12 of subframe 0, subframe 3, and subframe 6 as second candidate resources. Of course, the first condition can also be other conditions, which are not specifically limited in the embodiments of the present application.

[0204] At this point, the first communication device completes resource selection.

[0205] S705: The first communication device re-evaluates the first resource;

[0206] Before performing service transmission, the first communication device will also re-evaluate the first resource to see whether the first resource selected in S703 can be used for side link transmission. For example, due to the arrival of new services, the first resource being occupied by other UEs, etc., the previously selected first resource may not be used for side link transmission, so the first communication device needs to re-evaluate the selected first resource.

[0207] S706: If the evaluation result indicates that the first resource cannot be used for sidelink transmission, the first communication device triggers resource reselection and returns to S702;

[0208] S707: If the evaluation result indicates that the first resource can be used for sidelink transmission, the first communication device starts sidelink transmission by using the first resource;

[0209] S708: During the process of using the first resource for transmission, the first communication device determines whether to trigger resource reselection;

[0210] During the sidelink transmission process of the first communication device, due to some reasons, the first resource may not be used for sidelink transmission. Therefore, the first communication device also needs to evaluate the first resource to determine whether to trigger resource reselection. For example, the above reasons may include: upper layer configuration or reconfiguration of resource pool; or, no configured sidelink grant; or, in the past second, the MAC entity has neither new transmission nor retransmission on any resource indicated by the configured sidelink grant; or, sl-ReselectAfter is configured, and the number of consecutive unused transmission opportunities indicated by the configured sidelink grant reaches sl-ReselectAfter; or, the transmission resources indicated by the configured sidelink grant cannot meet the delay requirement of data on a certain logical channel determined according to the priority of the corresponding logical channel, and the MAC entity chooses not to transmit the corresponding single MAC PDU; or, the priority of the logical channel indicated by the SCI received by the UE is higher than the priority of the logical channel of the data to be transmitted, and a certain sl transmission scheduled by the SCI is expected to overlap with a certain resource currently reserved, and the SL-RSRP measurement result of the sl transmission indicated by the SCI is higher than the threshold. When the first resource meets any of the above conditions, the reserved resources associated with the SLprocess (if any) are cleared, and TX resource selection / reselection is triggered.

[0211] S709: If resource reselection is triggered, the first communication device returns to S702;

[0212] S710: If resource reselection is not triggered, the first communication device continues to use the first resource for side link transmission.

[0213] In some possible implementations, the first resource selected by the first communication device in executing S703 to S704 may also be used as a candidate resource, so that the first communication device can select a reserved resource from the candidate resources and then execute S705 to S710.

[0214] In an embodiment of the present application, through the methods described in S701 to S710 above, the first communication device selects resources that have an intersection with the DRX activation period corresponding to the first service as reserved resources, and uses the reserved resources for side link transmission. In this way, it can be ensured that the first communication device can receive transmissions from the second communication device (such as TX UE) during the activation period, saving power consumption of the RX UE and ensuring side link transmission between the first communication device and the second communication device.

[0215] In some possible implementations, in order to improve the degree of matching between the reserved resources and the DRX activation period of the first service, if there are multiple destination IDs, the first communication device may further select the first service, that is, the destination ID, before executing S707 to start side link transmission using the first resource. At this time, the first communication device may select a destination ID (used to identify the second service) whose corresponding DRX activation period intersects with the first resource in the time domain from the above-mentioned multiple destination IDs. That is to say, the DRX activation period corresponding to the last selected destination ID intersects with the reserved resources in the time domain.

[0216] In some possible implementations, the first communication device may also select a destination ID using the above method before executing S706, so that the selected destination ID has an intersection with the reserved resources in the time domain.

[0217] In some possible implementations, in order to improve the matching degree between the reserved resources and the DRX activation period of the first service, when the first communication device executes S701, first, the MAC layer of the first communication device can determine the union of the DRX activation periods in the time domain in at least one DRX configuration, that is, the first activation period, and indicate it to the physical layer. Here, at least one DRX configuration can be part or all of the DRX configurations that the first communication device can determine. For example, at least one DRX configuration can include the DRX configuration of the first service. Then, the physical layer performs sensing in the first activation period, demodulates the SCI of other UEs, and performs measurements. For example, measure PSCCH-RSRP or PSSCH-RSRP; or measure S-RSSI. Among them, PSCCH-RSRP is determined by measuring the DMRS associated with PSCCH, and PSSCH-RSRP is determined by measuring the DMRS associated with PSSCH. Of course, the first communication device can also measure other parameters of the resources indicated by SCI, which is not specifically limited in the embodiments of the present application.

[0218] It can be understood that if the first communication device monitors the SCI during the first activation period, then the SCI is within the first activation period, and if the first communication device measures the SCI, it can also be considered as measuring within the first activation period.

[0219] In some possible implementations, in order to improve the degree of matching between the reserved resources and the DRX activation period of the first service, when the first communication device performs S702 to exclude candidate resources, the MAC layer of the first communication device first indicates to the physical layer the union of the DRX activation periods corresponding to the first service and / or the union of the DRX activation periods corresponding to the current service in the first service and the non-periodic service in the historical service. Then, the physical layer excludes resources from the second resources and determines the resources that have an intersection with the above union as the first candidate resources. It can be understood that the first candidate resource needs to meet at least one of the following conditions: there is an intersection with the union of the DRX activation periods corresponding to the first service in the time domain; there is an intersection with the union of the DRX activation periods corresponding to the current service in the first service and the non-periodic service in the historical service in the time domain.

[0220] In some possible embodiments, the physical layer may further execute the method described in S702 above from the first candidate resources to further exclude resources to determine candidate resources and then determine the first resource, which is not specifically limited in the embodiments of the present application.

[0221] It should be noted that the second resource may be a resource corresponding to a resource in a selection window determined by the physical layer through sensing, or may be a resource remaining after the physical layer performs S702 to exclude resources from resource selection determined by sensing.

[0222] In other embodiments of the present application, Figure 8 This is a second flow chart of the communication method on the first communication device side in the embodiment of the present application, see Figure 8 As shown, the method comprises:

[0223] S801: The first communication device determines a second activation period;

[0224] S802: The first communication device monitors the SCI sent by other UEs during the second activation period;

[0225] Here, SCI is used to indicate resources used by other UEs for sidelink transmission.

[0226] In the present application, after determining the second activation period, the MAC layer of the first communication device indicates the second activation period to the physical layer of the first communication device. The physical layer monitors the SCI sent by other UEs during the second activation period, and then the physical layer performs measurements during the second activation period.

[0227] In some possible implementations, first, the first communication device determines the union of the DRX activation periods in at least one DRX configuration in the time domain, that is, the second activation period. Here, at least one DRX configuration may be part or all of the DRX configurations that can be determined by the first communication device. For example, at least one DRX configuration may include the DRX configuration of the first service.

[0228] Further, after S802, the first communication device can perform measurements according to the SCI during the second activation period, that is, measure the SCI. For example, measure PSCCH-RSRP or PSSCH-RSRP; or, measure S-RSSI. PSCCH-RSRP is determined by measuring the DMRS associated with the PSCCH, and PSSCH-RSRP is determined by measuring the DMRS associated with the PSSCH. Of course, the first communication device can also measure other parameters of the SCI, which is not specifically limited in the embodiments of the present application.

[0229] It can be understood that if the first communication device monitors the SCI during the second activation period, then the SCI is within the second activation period, and if the first communication device measures the SCI, it can also be considered as measuring within the second activation period.

[0230] At this point, the first communication device completes sensing in the second activation period.

[0231] S803: The first communication device excludes the resources indicated by the SCI according to the obtained measurement result, and determines a first candidate resource.

[0232] The first communication device excludes the resources whose measurement results meet a certain condition from the resources indicated by the SCI, thereby obtaining the candidate resource set of the first communication device. Then, the first communication device can select resources from the candidate resource set for transmission when transmitting services. For example, through S801, the first communication device measures the reference signal received power of the SCI to determine the PSCCH-RSRP or PSSCH-RSRP, and then the first communication device can exclude the resources whose PSCCH-RSRP or PSSCH-RSRP meets the preset conditions, or the first communication device can exclude the resources occupied by other UEs according to the indication of the SCI, and further, the first communication device can exclude the resources occupied by other UEs and the resources whose RSRP is higher than the preset threshold value.

[0233] In practical applications, the above-mentioned preset condition may be that the RSRP value is within a preset range, for example, the RSRP value is in the top 20% after all measured RSRP values ​​are sorted from large to small or from small to large, or, the RSRP value is higher than less than 70% of all RSRP values. Of course, the above-mentioned preset condition may also be other conditions, which may be set according to the transmission priority of the first communication device and the transmission priority indicated in the SCI of other UEs, and the embodiments of the present application do not make specific limitations.

[0234] In some possible implementations, the first communication device may also demodulate SCI through S801 to determine the subcarrier spacing configuration of the resources. The first communication device may also screen the resources according to the subcarrier spacing configuration of the resources so that the selected subcarrier spacing meets the transmission requirements of the resources for subsequent side link transmission.

[0235] Of course, the first communication device may exclude resources according to other conditions, which is not specifically limited in this application.

[0236] S804: The first communication device selects a first resource for sidelink transmission from the first candidate resources;

[0237] After the first service arrives, the first communication device may select a reserved resource for the first service from the first candidate resources, that is, the first resource.

[0238] In an embodiment of the present application, the above-mentioned first service may include: a communication target, a side link connection, a source and target pair, a sidelink link, a logical channel, a resource pool, a side link service, a MAC PDU, a TB, etc., or a combination of one or more thereof, and the embodiment of the present application does not make any specific limitation on this.

[0239] S805: The first communication device re-evaluates the first resource;

[0240] Before performing service transmission, the first communication device will also re-evaluate the first resource to see whether the first resource selected in S803 can be used for side link transmission. For example, due to the arrival of new services, the first resource being occupied by other UEs, etc., the previously selected first resource may not be used for side link transmission, so the first communication device needs to re-evaluate the selected first resource.

[0241] S806: If the evaluation result indicates that the first resource cannot be used for sidelink transmission, the first communication device triggers resource reselection and returns to S802;

[0242] S807: If the evaluation result indicates that the first resource can be used for sidelink transmission, the first communication device starts sidelink transmission by using the first resource;

[0243] S808: During transmission using the first resource, the first communication device determines whether to trigger resource reselection;

[0244] During the sidelink transmission process of the first communication device, due to some reasons, the first resource may not be used for sidelink transmission. Therefore, the first communication device also needs to evaluate the first resource to determine whether to trigger resource reselection. For example, the above reasons may include: upper layer configuration or reconfiguration of resource pool; or, no configured sidelink grant; or, in the past second, the MAC entity has neither new transmission nor retransmission on any resource indicated by the configured sidelink grant; or, sl-ReselectAfter is configured, and the number of consecutive unused transmission opportunities indicated by the configured sidelink grant reaches sl-ReselectAfter; or, the transmission resources indicated by the configured sidelink grant cannot meet the delay requirement of data on a certain logical channel determined according to the priority of the corresponding logical channel, and the MAC entity chooses not to transmit the corresponding single MAC PDU; or, the priority of the logical channel indicated by the SCI received by the UE is higher than the priority of the logical channel of the data to be transmitted, and a certain sl transmission scheduled by the SCI is expected to overlap with a certain resource currently reserved, and the SL-RSRP measurement result of the sl transmission indicated by the SCI is higher than the threshold. When the first resource meets any of the above conditions, the reserved resources associated with the SLprocess (if any) are cleared, and resource selection / reselection of the first communication device is triggered.

[0245] S809: If resource reselection is triggered, the first communication device returns to S802;

[0246] S810: If resource reselection is not triggered, the first communication device continues to use the first resource for side link transmission.

[0247] In an embodiment of the present application, through the method shown in S801 to S810 above, the first communication device selects resources that have an intersection with the DRX activation period corresponding to the first service (i.e., the second activation period) as reserved resources, and uses the reserved resources for side link transmission. In this way, it can be ensured that the first communication device can receive transmissions from the second communication device (such as TX UE) during the activation period, saving power consumption of the RX UE and ensuring side link transmission between the first communication device and the second communication device.

[0248] In some possible implementations, in order to improve the matching degree between the reserved resources and the DRX activation period of the first service, after S803, the first communication device may also determine the first candidate resources and the first service for side link transmission; the first communication device determines the first resource from the first candidate resources.

[0249] After the first communication device determines the first candidate resource through S803, it can also obtain its currently determinable first service. Since the DRX configuration is configured for the first service, the first communication device can select resources that have an intersection with the second activation period from the first candidate resources as the second candidate resources, and then determine the first resource from the second selected resources. At this time, the first resource can be understood as a reserved resource. Here, the first service may include current services and / or historical services. As described above, the "first service" is assumed to be a communication target identified by a destination ID as an example. The first communication device can determine at least one destination ID as a candidate destination ID set. The candidate destination ID set may include the currently selectable destination ID of the first communication device, and / or the historically selectable destination ID.

[0250] In the embodiment of the present application, in order to achieve matching of resources with the DRX activation period of the first service, the second activation period may be an activation period corresponding to one destination ID or an activation period corresponding to multiple destination IDs.

[0251] Then, if there are multiple destination IDs, the second activation period can be the union of multiple DRX activation periods in the DRX configurations corresponding to the multiple destination IDs; then, the first communication device can select resources that have an intersection with the union from the first candidate resources as the second candidate resources, and then, the first communication device can also select the first resource from the second candidate resources. For example, the first communication device selects resources that are partially or entirely located in the union of the above-mentioned multiple DRX activation periods from the first candidate resources as the second candidate resources, and then from the second candidate resources, according to the selected number of frequency domain resources and the remaining PDB of the available side link data of the logical channel allowed on the carrier, select the time-frequency resources for one transmission opportunity, and further use the selected time domain resources to determine a good resource reservation period and then select the corresponding periodic resources.

[0252] Alternatively, if there is a destination ID, the second activation period may be multiple DRX activation periods in the DRX configuration corresponding to the destination ID, then the first communication device may select a resource whose intersection in the time domain with the DRX activation period corresponding to the first service satisfies the first condition as the second candidate resource.

[0253] In practical applications, the first condition may include: the intersection of the DRX activation periods corresponding to the first service in the time domain is the largest, the intersection of the DRX activation periods corresponding to the first service in the time domain is within a preset range, the intersection of the DRX activation periods corresponding to the first service in the time domain is greater than a preset threshold, etc. For example, if the DRX activation period corresponding to a destination ID is subframe 0, then the first communication device determines the resource with the largest number of symbols in the intersection with subframe 0 in the first candidate resource as the second candidate resource, or the first communication device determines the resource with the largest number of symbols in the intersection with subframe 0 in the first candidate resource as the second candidate resource, and further, the first communication device determines the resource with the largest number of symbols in the intersection with subframe 0 in the first candidate resource as the second candidate resource, and further, the first communication device determines the resource within symbol 1 to symbol 12 of subframe 0 in the first candidate resource as the second candidate resource. Similarly, if the DRX activation period corresponding to a destinationID is subframe 0, subframe 3, and subframe 6, then the first communication device determines multiple resources in the first candidate resources whose intersections with subframe 0, subframe 3, and subframe 6 are the largest as second candidate resources, or the first communication device determines multiple resources in the first candidate resources whose number of symbols in the intersections with subframe 0, subframe 3, and subframe 6 is greater than 80% (i.e., 11 symbols) as second candidate resources, and further, the first communication device determines multiple resources in the first candidate resources that are located in symbols 1 to 12 of subframe 0, subframe 3, and subframe 6 as second candidate resources. Of course, the first condition can also be other conditions, which are not specifically limited in the embodiments of the present application.

[0254] In some possible implementations, the first resource selected by the first communication device in S804 may also be used as a candidate resource, so that the first communication device can select a reserved resource from the candidate resources and then execute S805 to S810.

[0255] In some possible implementations, in order to improve the degree of matching between the reserved resources and the DRX activation period of the first service, in a scenario where there are multiple destination IDs, the first communication device may further select the first service, that is, the destination ID, before executing S807 to start side link transmission using the first resource. At this time, the first communication device may select a destination ID (used to identify the second service) whose corresponding DRX activation period intersects with the first resource in the time domain from the above-mentioned multiple destination IDs. In other words, the DRX activation period corresponding to the last selected destination ID intersects with the reserved resources in the time domain.

[0256] In some possible implementations, in order to improve the matching degree between the reserved resources and the DRX activation period of the first service, when the first communication device performs S803 to exclude the candidate resources, the MAC layer of the first communication device first indicates to the physical layer the union of the DRX activation periods corresponding to the first service and / or the union of the DRX activation periods corresponding to the current service in the first service and the non-periodic service in the historical service, and then the physical layer excludes resources from the second resources and determines the resources that have an intersection with the above-mentioned union as the third candidate resources, that is, the third candidate resources need to meet at least one of the following conditions: there is an intersection with the union of the DRX activation periods corresponding to the first service in the time domain; there is an intersection with the union of the DRX activation periods corresponding to the current service in the first service and the non-periodic service in the historical service in the time domain. The third candidate resource can be used as the above-mentioned first candidate resource. Of course, the physical layer can also further perform the method as described in S803 from the third candidate resource to determine the first candidate resource, which is not specifically limited in the embodiments of the present application.

[0257] In the present application, the second resource may be a resource corresponding to a resource in a selection window determined by the physical layer through sensing, or may be a resource remaining after the physical layer performs S702 to exclude resources from the resource selection determined by sensing.

[0258] In other embodiments of the present application, Fig. 9 This is a schematic diagram of a third flow chart of the communication method on the first communication device side in the embodiment of the present application, see Fig. 9 As shown, the method comprises:

[0259] S901: The first communication device performs sensing;

[0260] The first communication device continuously monitors the SCI sent by other UEs, and measures the resources indicated by the SCI according to the instructions of the SCI to determine the measurement results. Here, after the first communication device monitors the SCI of other UEs, it demodulates the SCI, and the demodulated SCI can at least reflect the usage of resources on the sidelink.

[0261] In the embodiment of the present application, the above-mentioned "measurement" may include the measurement of the sidelink RSRP based on the sidelink DMRS, for example, measuring the RSRP of the PSCCH (i.e., PSCCH-RSRP) or PSSCH-RSRP; or, S-RSSI, etc. may also be measured. PSCCH-RSRP is determined by measuring the DMRS associated with the PSCCH, and PSSCH-RSRP is determined by measuring the DMRS associated with the PSSCH. Of course, the first communication device may also measure other parameters of the resources indicated by the SCI, which is not specifically limited in the embodiment of the present application.

[0262] S902: The first communication device determines a fourth resource;

[0263] In the embodiment of the present application, the fourth resource may be a resource in the selection window, or may be a resource remaining after excluding resources in the selection window.

[0264] S903: The first communication device determines a third candidate resource from the fourth resource;

[0265] Here, the third candidate resource needs to meet at least one of the following conditions: there is an intersection with the union of the DRX activation periods corresponding to the first service in the time domain; there is an intersection with the union of the DRX activation periods corresponding to the current service in the first service and the non-periodic service in the historical service in the time domain;

[0266] After the first communication device performs S901, the MAC layer of the first communication device first indicates to the physical layer the union of the DRX activation periods corresponding to the first service and / or the union of the DRX activation periods corresponding to the current service in the first service and the non-periodic service in the historical service, that is, the first activation period. Then, the physical layer excludes resources from the fourth resource and determines the resources that have an intersection with the above union as the third candidate resource. That is to say, the third candidate resource needs to meet at least one of the following conditions: there is an intersection with the union of the DRX activation periods corresponding to the first service in the time domain; there is an intersection with the union of the DRX activation periods corresponding to the current service in the first service and the non-periodic service in the historical service in the time domain. Then, the third candidate resource can be used to determine the fifth resource.

[0267] Of course, the physical layer can further exclude resources from the third candidate resources. For example, the first communication device excludes resources whose measurement results meet a certain condition from the third candidate resources, and determines the remaining resources as candidate resources of the first communication device. Then, the first communication device can also determine the fifth resource from the candidate resources for transmission when transmitting the first service. For example, through S902, the first communication device measures the reference signal received power of the SCI to determine the PSCCH-RSRP or PSSCH-RSRP. Then, the first communication device can exclude resources whose PSCCH-RSRP or PSSCH-RSRP meets the preset conditions, or the first communication device can exclude resources occupied by other UEs according to the indication of the SCI. Furthermore, the first communication device can also exclude resources occupied by other UEs and whose corresponding RSRP is higher than the preset threshold value.

[0268] In practical applications, the above-mentioned preset condition may be that the RSRP value is within a preset range, for example, the RSRP value is in the top 20% of all measured RSRP values ​​after being sorted from large to small or from small to large, or, the RSRP value is higher than 70% of all RSRP values. Of course, the above-mentioned preset condition may also be other conditions, which may be set according to the transmission priority of the first communication device and the transmission priority indicated in the SCI of other UEs, and the embodiments of the present application do not make specific limitations.

[0269] In some possible implementations, the first communication device may also demodulate SCI through S901 to determine the subcarrier spacing configuration of the resources. The first communication device may also screen the resources according to the subcarrier spacing configuration of the resources so that the selected subcarrier spacing meets the transmission requirements of the resources for subsequent side link transmission.

[0270] Of course, the first communication device may exclude resources according to other conditions, which is not specifically limited in this application.

[0271] S904: The first communication device selects a fifth resource for sidelink transmission from the third candidate resources;

[0272] After the first service arrives, the first communication device may select a reserved resource for the first service from the third candidate resource set, which is the fifth resource.

[0273] In an embodiment of the present application, the above-mentioned first service may include: a communication target, a side link connection, a source and target pair, a sidelink link, an LCH, a resource pool, a side link service, a MAC PDU, a TB, etc., or a combination of one or more thereof, and the embodiment of the present application does not make any specific limitation on this.

[0274] S905: The first communication device re-evaluates the fifth resource;

[0275] Before performing service transmission, the first communication device will also re-evaluate the fifth resource to see whether the fifth resource selected through S903 can be used for side link transmission, so as to ensure that the resource finally selected can be used for side link transmission.

[0276] S906: If the evaluation result indicates that the fifth resource cannot be used for sidelink transmission, the first communication device triggers resource reselection and returns to S902;

[0277] S907: If the evaluation result indicates that the fifth resource can be used for side link transmission, the first communication device starts side link transmission by using the fifth resource;

[0278] S908: During the process of using the fifth resource for transmission, the first communication device continuously determines whether to trigger resource reselection;

[0279] In S905 and S908, during the side link transmission process, the first communication device may not be able to use the first resource for side link transmission due to some reasons. Therefore, the first communication device also needs to evaluate the first resource to determine whether to trigger resource reselection. For example, the above reasons may include: upper layer configuration or reconfiguration of resource pool; or, no configured sidelink grant; or, in the past second, the MAC entity has neither new transmission nor retransmission on any resource indicated by the configured sidelink grant; or, sl-ReselectAfter is configured, and the number of consecutive unused transmission opportunities indicated by the configured sidelink grant reaches sl-ReselectAfter; or, the transmission resources indicated by the configured sidelink grant cannot meet the delay requirement of data on a certain logical channel determined according to the priority of the corresponding logical channel, and the MAC entity chooses not to transmit the corresponding single MAC PDU; or, the priority of the logical channel indicated by the SCI received by the UE is higher than the priority of the logical channel of the data to be transmitted, and a certain SL transmission scheduled by the SCI is expected to overlap with a certain currently reserved resource, and the SL-RSRP measurement result of the SL transmission indicated by the SCI is higher than the threshold. When the first resource meets any of the above conditions, the reserved resources associated with the SL process (if any) are cleared, and the resource selection / reselection of the first communication device is triggered.

[0280] S909: If resource reselection is triggered, the first communication device returns to S902;

[0281] S910: If resource reselection is not triggered, the first communication device continues to use the fifth resource for side link transmission.

[0282] In an embodiment of the present application, through the method shown in S901 to S910 above, the first communication device selects resources that have an intersection with the DRX activation period corresponding to the first service as reserved resources, and uses the reserved resources for side link transmission. In this way, it can be ensured that the first communication device can receive transmissions from the second communication device (such as TX UE) during the activation period, saving power consumption of the RX UE and ensuring side link transmission between the first communication device and the second communication device.

[0283] In some possible implementations, in order to improve the matching degree between the reserved resources and the DRX activation period of the first service, when executing S901, the first communication device first determines the union of the DRX activation periods in the time domain in at least one DRX configuration, that is, the first activation period. Here, at least one DRX configuration can be part or all of the DRX configurations that the first communication device can determine. For example, at least one DRX configuration may include the DRX configuration of the first service. Then, the first communication device performs sensing in the first activation period, demodulates the SCI of other UEs, and measures the SCI. For example, measure PSCCH-RSRP or PSSCH-RSRP; or, measure S-RSSI. Among them, PSCCH-RSRP is determined by measuring the DMRS associated with PSCCH, and PSSCH-RSRP is determined by measuring the DMRS associated with PSSCH. Of course, the first communication device can also measure other parameters of the resources indicated by SCI, which is not specifically limited in the embodiments of the present application.

[0284] In an embodiment of the present application, after determining the first activation period, the MAC layer of the first communication device indicates the first activation period to the physical layer of the first communication device. The physical layer listens to the SCI sent by other UEs during the first activation period, and then the physical layer performs measurements during the first activation period.

[0285] In some possible implementations, in order to improve the matching degree between the reserved resources and the DRX activation period of the first service, after S903, the first communication device may also determine a third candidate resource and the first service for side link transmission; the first communication device determines a fifth resource from the third candidate resource.

[0286] After the first communication device determines the third candidate resource through S903, it can also obtain its currently determinable first service. Since the DRX configuration is configured for the first service, the first communication device can select a resource that has an intersection with the first activation period from the third candidate resource as the fifth resource. At this time, the fifth resource can be a reserved resource. Here, the first service may include current services and / or historical services. As described above, the "first service" is assumed to be a communication target identified by a destination ID as the first service. The first communication device can determine at least one destination ID as a candidate destination ID set. The candidate destination ID set may include the currently selectable destination ID of the first communication device, and / or a historically selectable destination ID.

[0287] In the embodiment of the present application, in order to achieve matching of resources with the DRX activation period of the first service, the first activation period may be an activation period corresponding to one destination ID or a union of activation periods corresponding to multiple destination IDs.

[0288] Then, if there are multiple destination IDs, the first activation period can be the union of multiple DRX activation periods in the DRX configurations corresponding to the multiple destination IDs; then, the first communication device can select a resource that has an intersection with the union from the third candidate resources as the fourth candidate resource, and then, the first communication device can also select a fifth resource from the fourth candidate resources. For example, the first communication device selects a resource that is partially or entirely located in the union of the above-mentioned multiple DRX activation periods from the third candidate resources as the fourth candidate resource, and then from the fourth candidate resources, according to the selected number of frequency domain resources and the remaining PDB of the available side link data of the logical channel allowed on the carrier, select the time-frequency resources for a transmission opportunity, and further use the selected time domain resources to determine a good resource reservation period and then select the corresponding periodic resources.

[0289] Alternatively, if there is a destination ID, the first activation period may be multiple DRX activation periods in the DRX configuration corresponding to the destination ID, then the first communication device may select a resource whose intersection with the DRX activation period corresponding to the first service in the time domain satisfies the first condition as the fourth candidate resource.

[0290] In actual applications, the above-mentioned first condition may include one or more of the following: the intersection of the DRX activation period corresponding to the first service in the time domain is the largest, the intersection of the DRX activation period corresponding to the first service in the time domain is within a preset range, the intersection of the DRX activation period corresponding to the first service in the time domain is greater than a preset threshold, etc.

[0291] In some possible implementations, the fifth resource selected by the first communication device in S904 may also be used as a candidate resource, so that the first communication device can select a reserved resource from the candidate resources and then execute S905 to S910.

[0292] In some possible implementations, in order to improve the degree of matching between the reserved resources and the DRX activation period of the first service, in the scenario of multiple destination IDs, the first communication device may further select a destination ID before executing S907 to start side link transmission using the fifth resource. At this time, the first communication device may select a destination ID (used to identify the second service) from the above-mentioned multiple destination IDs, the corresponding DRX activation period of which intersects with the fifth resource in the time domain. That is, the DRX activation period corresponding to the last selected destination ID intersects with the reserved resources in the time domain.

[0293] In an embodiment of the present application, in one or more of the above embodiments, the first communication device may continuously evaluate the third resource (i.e., the reserved resource selected by the first communication device). If the first communication device determines that the third resource and the DRX activation period corresponding to the current service (the third service or the fourth service) of the first communication device do not have an intersection, that is, the third resource is located outside the DRX activation period corresponding to the current service in the time domain, then the first communication device triggers resource reselection to reselect a resource that has an intersection with the DRX activation period of the current service.

[0294] It should be noted that the current service is the service when the first communication device evaluates the third resource, which may be the same as the first service or different from the first service. For example, the third service may include: a communication target, a side link connection, a source and target pair, a sidelink link, a logical channel, a resource pool, a side link service, a MAC PDU, a TB, etc., one or more of which are not specifically limited in this embodiment of the present application. The fourth service may include: may include: a communication target, a side link connection, a source and target pair, a sidelink link, a logical channel, a resource pool, a side link service, a MAC PDU, a TB, etc., one or more of which are not specifically limited in this embodiment of the present application.

[0295] During the sidelink transmission process, the first communication device may trigger resource reselection due to changes in services, such as the arrival of new services, changes in the current resource pool, and reconfiguration of current resources. For example, the third resource does not meet the latency requirement of the first service. Furthermore, the first communication device may also consider the relationship between the third resource and the DRX activation period of the current service to decide whether to trigger resource reselection.

[0296] For example, Fig.10 This is a schematic diagram of the DRX activation period corresponding to the resources and the current service in the embodiment of the present application, see Fig.10 As shown, the current service arrives at time t1, and the time difference between the start time t2 of the third resource and t1 meets the delay requirement of the current service. However, since the third resource is outside the DRX activation period corresponding to the current service, that is, there is no intersection between the third resource and the DRX activation period corresponding to the current service, at this time, the first communication device triggers resource reselection.

[0297] In some possible implementations, the third resource does not have an intersection with the DRX activation period corresponding to the current service of the first communication device, which may include: the third resource does not have an intersection with the union of multiple DRX activation periods corresponding to the current service; or the third resource does not have an intersection with at least one DRX activation period among the multiple DRX activation periods corresponding to the current service; or the third resource does not have an intersection with a preset number of DRX activation periods among the multiple DRX activation periods corresponding to the current service. It can be understood that when the DRX activation periods among the multiple DRX activation periods corresponding to the current service that do not have an intersection with the third resource reach a preset number (which may be an empirical value), or are within a preset number range (which may be an empirical value), the first communication device determines that the third resource does not have an intersection with the DRX activation periods among the multiple DRX activation periods corresponding to the current service that meet the preset number.

[0298] In some possible implementations, the first communication device may further configure a period for the first resource. Then, the first communication device may configure a DRX period (ie, a DRX cycle) that satisfies the second condition in the DRX configuration corresponding to the first service as the period corresponding to the first resource.

[0299] Here, the second condition may include: the minimum value of the DRX cycle in the DRX configuration corresponding to the first service, the DRX cycle in the DRX configuration corresponding to the first service is less than a preset threshold, the DRX cycle in the DRX configuration corresponding to the first service is less than 20%, etc. The second condition can also be other conditions, which are not specifically limited in the embodiments of the present application.

[0300] It should be noted that there is no order of execution for the first communication device to configure the first resource cycle and the first communication device to select the first resource, and the two can be executed one after the other or at the same time. When the two are executed one after the other, the first communication device can first configure the first resource cycle and then select the first resource, or can first select the first resource and then configure the first resource cycle. The embodiments of the present application do not specifically limit the execution timing of the first communication device to configure the first resource cycle and the first communication device to select the first resource.

[0301] In an embodiment of the present application, by selecting the period of the first resource as the minimum period of all DRX configurations corresponding to the first service, so that the period of the first communication device waking up to listen to the SCI matches the period sent by the first service, the probability of the side link resources being effectively utilized is improved.

[0302] An embodiment of the present application further provides a communication method, which can be applied to the above-mentioned communication system, wherein the first communication device can be a TX UE or a RX UE, and correspondingly, the second communication device can be a RX UE or a TX UE.

[0303] Fig.11 This is a flow chart of the communication method in the embodiment of the present application, see Fig.11 As shown, the method may include:

[0304] S1101: The first communication device determines that the first resource pool or resources in the first resource pool meet a third condition;

[0305] Here, the first resource pool is a resource pool currently selected by the first communication device;

[0306] In some possible implementations, the third condition includes: the channel busy ratio (CBR) of the current resource pool satisfies the fourth condition, such as the fourth condition may be that the CBR is greater than a preset value (which may be an empirical value) or the CBR is within a preset range, the first communication device triggers resource pool reselection and / or the packet loss rate satisfies the fifth condition, such as the fifth condition may be that the packet loss rate is greater than a preset value (which may be an empirical value) or the packet loss rate is within a preset range, etc.

[0307] In some possible implementations, the third condition may further include one or a combination of the following conditions: the CBR satisfies the fourth condition and reaches the first threshold, the number of times the first communication device triggers resource pool reselection reaches the second threshold, and the number of times the packet loss rate of the second communication device satisfies the fifth condition reaches the third threshold. The first threshold, the second threshold, and the third threshold may be empirical values, such as 3 times, 5 times, and 8 times.

[0308] In the embodiments of the present application, the third condition is not limited to the above-mentioned cases and no specific limitation is made thereto.

[0309] S1102: The first communication device performs DRX configuration;

[0310] After executing S1101, the first communication device executes S1102, so that the first communication device selects a resource pool that can be used for side link transmission.

[0311] S1103: The first communication device instructs the second communication device to perform DRX configuration.

[0312] It should be noted that the "DRX configuration" mentioned here can be understood as DRX configuration based on reserved resources. For example, DRX reconfiguration is performed based on the reserved resources so that the reserved resources intersect with the reconfigured DRX activation period in the time domain; or, DRX initial configuration is performed based on the reserved resources so that the reserved resources intersect with the configured DRX activation period in the time domain.

[0313] In some possible implementations, the above-mentioned "DRX configuration" can also be understood as enabling or disabling the DRX function, that is, the first communication device can instruct the second communication device to configure the DRX function or cancel the DRX function. Further, if the first communication device instructs the second communication device to configure the DRX function, then the first communication device can send DRX configuration information to the second communication device at the same time, or the second communication device configures the DRX configuration information by itself. Of course, the second communication device can also determine the DRX configuration information by other means, and this is not specifically limited in the embodiments of the present application.

[0314] In other embodiments of the present application, after executing S1101, the first communication device may further execute S1103 to instruct the second communication device to select a resource pool that can be used for side link transmission.

[0315] In some possible implementations, S1103 may include: a first indication message is used to notify the second communication device that the current resource pool of the first communication device or the resources in the current resource pool meet a third condition; or, the first communication device sends a second indication message to the second communication device, and the second indication message is used to instruct the second communication device to perform DRX configuration; and / or, the first communication device sends a third indication message to the second communication device, and the third indication message is used to indicate DRX configuration information.

[0316] In practical applications, the DRX configuration information may include some or all of the sidelink DRX parameters. Optionally, the DRX parameters may include one or more of the following parameters: SL DRX duration timer (drx-onDurationTimerSL), SL DRX slot offset (drx-SlotOffsetSL), SL DRX inactivity timer (drx-InactivityTimerSL), SL DRX retransmission timer (drx-RetransmissionTimerSL), SL DRX long cycle start offset (drx-LongCycleStartOffsetSL), SL DRX long cycle (drx-LongCycleSL), SL DRX short cycle (drx-ShortCycleSL), SL DRX short cycle timer

[0317] (drx-ShortCycleTimerSL) or SL DRXHARQ round trip time (RTT) timer (drx-HARQ-RTT-TimerSL). Here, it can be understood that the "timer" mentioned in the above parameters actually refers to the length of the timer.

[0318] In other embodiments of the present application, if the first communication device is a TX UE, then, before S1101, the first communication device may also receive a fourth indication message from the second communication device (RX UE), and the fourth indication message is used to indicate the packet loss rate of the second communication device or that the packet loss rate satisfies the fifth condition, for example, the fifth condition may be that the packet loss rate is greater than a preset value (which may be an empirical value), or that the packet loss rate is within a preset range. Of course, the fifth condition may also be other conditions, which are not specifically limited in the embodiments of the present application.

[0319] In some possible implementations, the second communication device may also send fourth indication information to the first communication device when the packet loss rate satisfies the fifth condition and reaches the fourth threshold, such as when the packet loss rate satisfies the fifth condition for 3 times, 5 times, or 10 times. At this time, the fourth indication information may be used to indicate the most recent packet loss rate or the most recent packet loss rate satisfies the fifth condition. In practical applications, the triggering condition for the second communication device to send the fourth indication information may also be other conditions, which are not specifically limited in the embodiments of the present application.

[0320] Based on the same inventive concept, an embodiment of the present application provides a communication device, which may be a chip or a system on chip in a first communication device, or a functional module in the first communication device for implementing the method described in any of the above embodiments. The chip or the system on chip includes a memory, and the memory stores instructions, and when the instructions are called by the system on chip or the chip, the above method is executed. Fig.12 This is a schematic diagram of the structure of the communication device in the embodiment of the present application, see Fig.12 As shown, the communication device 1200 may include: a determination module 1201; and may also include one or more of a trigger module 1202, a monitoring module 1203, a configuration module 1204 or an indication module 1205.

[0321] In some possible implementations, the determination module 1201 is used to determine a first candidate resource and a first service for side link transmission; determine the first resource from the first candidate resources, the first resource and the first activation period have an intersection in the time domain, and the first activation period is determined according to the DRX activation period corresponding to the first service.

[0322] In some possible implementations, the determination module 1201 is configured to determine resources in the first candidate resources that have an intersection with the first activation period in the time domain as second candidate resources; and determine the first resource from the second candidate resources.

[0323] In some possible implementations, the determination module 1201 is further configured to determine, among the first candidate resources, resources that are included in the first activation period in the time domain as second candidate resources.

[0324] In some possible implementations, the above-mentioned device may further include: a selection module, configured to select a second service, wherein a DRX activation period corresponding to the second service overlaps with the first resource in the time domain.

[0325] In some possible implementations, the trigger module 1202 is configured to trigger resource reselection if there is no intersection between the first resource and the DRX activation period corresponding to the third service of the first communication device.

[0326] In some possible implementations, the determination module 1201 is further configured to determine a DRX cycle that satisfies the second condition in the DRX configuration corresponding to the first service as a first cycle, where the first cycle is a cycle corresponding to the first resource.

[0327] In some possible implementations, the determination module 1201 is further used to determine a first activation period before determining a first candidate resource for side link transmission; the monitoring module 1203 is used to monitor SCI during the first activation period, and the SCI is used to indicate resources used by other communication devices for side link transmission.

[0328] Optionally, the above device may further include: a measurement module, configured to perform measurement according to the SCI during the first activation period.

[0329] In some possible implementations, determination module 1202 is specifically used to determine a second resource for side link transmission; determine a first candidate resource from the second resource, and the first candidate resource satisfies at least one of the following conditions: there is an intersection in the time domain with the union of DRX activation periods corresponding to the first service, and the first service includes the current service and / or the historical service; there is an intersection in the time domain with the union of DRX activation periods corresponding to the current service and the non-periodic service in the historical service.

[0330] Based on the same inventive concept, an embodiment of the present application provides a communication device, which can be a chip or a system on chip in a first communication device, or a functional module in the first communication device for implementing the method described in any of the above embodiments. The chip or system on chip includes a memory, and the memory stores instructions. When the instructions are called by the system on chip or the chip, the above method is executed. Fig.12 As shown, the determination module 1201 is also used to determine the third resource for side link transmission; the trigger module 1202 is used to trigger resource reselection if there is no intersection between the third resource and the DRX activation period corresponding to the fourth service of the first communication device.

[0331] In some possible embodiments, the DRX activation periods corresponding to the third resource and the first service do not have an intersection, including: the multiple unions of the third resource and the DRX activation periods corresponding to the fourth service do not have an intersection; or, the third resource and at least one of the multiple DRX activation periods corresponding to the fourth service do not have an intersection; or, the third resource and the DRX activation periods that meet a preset number of DRX activation periods do not have an intersection.

[0332] In some possible embodiments, the DRX activation period corresponding to the first service includes at least one of the following: a DRX activation period corresponding to the communication target, a DRX activation period corresponding to the side link connection, a DRX activation period corresponding to the source and target pair, a DRX activation period corresponding to the side link link, a DRX activation period corresponding to the logical channel, a DRX activation period corresponding to the resource pool, a DRX activation period corresponding to the side link service, a DRX activation period corresponding to the media access control layer protocol data unit MAC PDU, and a DRX activation period corresponding to the transport block TB.

[0333] Based on the same inventive concept, an embodiment of the present application provides a communication device, which may be a chip or a system on chip in a first communication device, or a functional module in the first communication device for implementing the method described in any of the above embodiments. The chip or the system on chip includes a memory, in which instructions are stored, and when the instructions are called by the system on chip or the chip, the above method is executed. Still referring to 12, the determination module 1201 is also used to determine a second activation period, and the second activation period is the union of the DRX activation periods in at least one DRX configuration in the time domain; the monitoring module 1203 is also used to monitor the side link control information SCI during the second activation period, and the SCI is used to indicate the resources used by other communication devices for side link transmission;

[0334] Furthermore, the above-mentioned device may also include: a measurement module, configured to perform measurement in the second activation period according to the SCI.

[0335] In some possible implementations, the at least one DRX configuration includes a DRX configuration for the first service.

[0336] Based on the same inventive concept, an embodiment of the present application provides a communication device, which can be a chip or a system on chip in a first communication device, or a functional module in the first communication device for implementing the method described in any of the above embodiments. The chip or system on chip includes a memory, and the memory stores instructions. When the instructions are called by the system on chip or the chip, the above method is executed. Fig.12 As shown, the determination module 1201 is used to determine the fourth resource for side link transmission; determine the third candidate resource from the fourth resource, and the third candidate resource satisfies at least one of the following conditions: there is an intersection in the time domain with the union of the DRX activation periods corresponding to the first service, and the first service includes the current service and / or the historical service; there is an intersection in the time domain with the union of the DRX activation periods corresponding to the non-periodic service in the current service and the historical service; wherein the third candidate resource is used to determine the fifth resource for side link transmission.

[0337] In some possible embodiments, the DRX activation period corresponding to the first service includes at least one of the following: a DRX activation period corresponding to the communication target, a DRX activation period corresponding to the side link connection, a DRX activation period corresponding to the source and target pair, a DRX activation period corresponding to the side link link, a DRX activation period corresponding to the logical channel, a DRX activation period corresponding to the resource pool, a DRX activation period corresponding to the side link service, a DRX activation period corresponding to the media access control layer protocol data unit MAC PDU, and a DRX activation period corresponding to the transport block TB.

[0338] Based on the same inventive concept, an embodiment of the present application provides a communication device, which can be a chip or a system on chip in a first communication device, or a functional module in the first communication device for implementing the method described in any of the above embodiments. The chip or system on chip includes a memory, and the memory stores instructions. When the instructions are called by the system on chip or the chip, the above method is executed. Fig.12 As shown, a determination module 1201 is used to determine whether the first resource pool or the resources in the first resource pool satisfy the third condition, and the first resource pool is the resource pool for which the first communication device currently performs resource selection; a configuration module 1204 is used to perform discontinuous reception DRX configuration, and / or an indication module 1205 is used to instruct the second communication device to perform DRX configuration, and side link communication is performed between the first communication device and the second communication device.

[0339] In some possible implementations, the third condition includes at least one of the following: the channel congestion rate CBR of the current resource pool satisfies the fourth condition; the number of times CRB satisfies the fourth condition reaches a first threshold; the first communication device triggers resource pool reselection; the number of times the first communication device triggers resource pool reselection reaches a second threshold; the packet loss rate of the second communication device satisfies the fifth condition or the number of times the packet loss rate of the second communication device satisfies the fifth condition reaches a third threshold.

[0340] In some possible implementations, the fourth condition includes: the CBR is greater than the first preset value, or the CBR is within the first preset interval; and / or the fifth condition includes: the packet loss rate is greater than the second preset value, or the packet loss rate is within the second preset interval.

[0341] In some possible implementations, the indication module 1205 is used to send a first indication message to a second communication device, where the first indication message is used to notify the second communication device that a current resource pool of the first communication device or resources in a current resource pool satisfy a third condition; or, to send a second indication message to the second communication device, where the second indication message is used to instruct the second communication device to perform DRX configuration; and / or, to send a third indication message to the second communication device, where the third indication message is used to indicate DRX configuration information.

[0342] In some possible implementations, the apparatus may further include: a receiving module, configured to receive a fourth indication message from the second communication device, where the fourth indication message is used to indicate a packet loss rate or that the packet loss rate satisfies a fifth condition.

[0343] Based on the same inventive concept, an embodiment of the present application provides a communication device that can be applied to the above communication system. The communication device can be consistent with the first communication device described in one or more of the above embodiments. Fig.13 Another structural diagram of the communication device in the embodiment of the present application is shown in FIG. Fig.13As shown, the communication device 1300 may include: a processor 1301 , a memory 1302 , a bus 1303 , an input device 1304 , and an output device 1305 .

[0344] Specifically, the memory 1302 may include computer storage media in the form of volatile and / or non-volatile memory, such as read-only memory and / or random access memory. The memory 1302 may store an operating system, application programs, other program modules, executable code, program data, user account opening data, user subscription data, etc.

[0345] The input device 1304 can be used to input commands and information to the first communication device, and the input device 1304 can be a keyboard or a pointing device, such as a mouse, a trackball, a touch pad, a microphone, a joystick, a game pad, a satellite TV antenna, a scanner or a similar device. These input devices can be connected to the processor 1301 via the bus 1303.

[0346] The output device 1305 can be used to output information to the first communication device. In addition to the monitor, the output device 1305 can also be other peripheral output devices, such as speakers and / or printing devices. These output devices can also be connected to the processor 1301 through the bus 1303.

[0347] The first communication device may be connected to a network, such as a local area network (LAN), through the network interface 1306. In a networked environment, the computer-executable instructions stored in the first communication device may be stored in a remote storage device, rather than being limited to local storage.

[0348] When the processor 1301 in the first communication device executes the executable code or application stored in the memory 1302, the method steps on the first communication device side in the above embodiment can be executed. The specific execution process refers to the above embodiment and will not be repeated here.

[0349] In addition, the memory 1302 stores computer-executable instructions for implementing the functions of the determination module, trigger module, monitoring module, configuration module, indication module, and measurement module. The functions / implementation processes of the determination module, trigger module, monitoring module, configuration module, indication module, and measurement module can be implemented by Fig.13 The processor 1301 in the memory 1302 calls the computer execution instructions stored in the memory 1302 to implement it. For specific implementation processes and functions, please refer to the above-mentioned related embodiments.

[0350] Based on the same inventive concept, an embodiment of the present application further provides a communication method, which can be applied to a communication system. Fig.14 This is another schematic diagram of the architecture of the communication system in the embodiment of the present application, see Fig.14 As shown, the communication system 10 may include: a first communication device 141, a second communication device 142 and a third communication device 143, wherein, for different application scenarios, the first communication device may be a transmitting terminal device (denoted as TX UE) or a receiving terminal device (denoted as RXUE), the second communication device may be a TX UE, an RX UE, a network device to which the TX UE belongs (such as a base station) or a network device to which the RX UE belongs (such as a base station), and the third communication device may also be a TX UE, an RX UE, a network device to which the TX UE belongs (such as a base station) or a network device to which the RX UE belongs (such as a base station).

[0351] During the side link transmission process, the first communication device may receive the first DRX configuration information of the first side link configuration corresponding to the first communication device from the second communication device, and may also receive the first resource configuration information of the second side link configuration corresponding to the first communication device from the third communication device. Among them, the first DRX configuration information may include some or all of the side link DRX parameters. Further, the first DRX configuration information is used to indicate the DRX activation period of the first side link. For example, the DRX activation period may include: DRX activation period (onduration) or active time (activetime). Here, the active time may include the duration of the activation timer (onduration timer), the duration of the retransmission timer (retransmissiontimer), the duration of the inactivity timer (inactivitytimer), etc. Of course, the active time also includes other time periods, which are not specifically limited in the embodiments of the present application.

[0352] In some possible implementations, the first side link may be a side link between the first communication device and the second communication device, or a side link between the first communication device and other terminal devices (which may be recorded as other UEs). Then, the first DRX configuration information may be used for the first side link between the first communication device and the second communication device, or for the first side link between the first communication device and other UEs.

[0353] In some possible implementations, the first side link may be one or more side links, and the second side link may also be one or more side links. It should be noted that when the first side link is one side link, the second side link and the first side link may be the same side link, or the second side link and the first side link may be different side links, for example, the first side link is a side link between a TX UE and a RX UE, and the second side link may be a side link between a RX UE and a TX UE, or a side link between a RX UE as a TX UE and other RX UEs. The first side link may also be a side link between a TX UE or an RX UE and other UEs, and the second side link may be a side link between a RX UE and a TX UE, or a side link between a TX UE or an RX UE and other UEs. Further, when the first side link is multiple side links, the second side link may be one or more of the first side links, that is, the second side link is part of the side links or all of the side links in the first side link.

[0354] In an embodiment of the present application, the first communication device may configure the first DRX configuration information for itself, and the third communication device may configure the first resource configuration information for the first communication device; or, the second communication device may configure the first DRX configuration information for the first communication device, and the first communication device may configure the first resource configuration information for itself; or, the second communication device may configure the first DRX configuration information for the first communication device, and the third communication device may configure the first resource configuration information for the first communication device. It can be seen that since the DRX configuration information and the resource configuration information are configured by different entities, the DRX activation period indicated by the DRX configuration information and the time zone indicated by the resource configuration information may conflict in one or more time periods, for example, see Figure 6 As shown, the DRX activation period has no intersection with the time domain interval, or, see Figure 5 As shown, the intersection of the DRX activation period and the time interval is less than a certain threshold value. At this time, it can be said that the DRX configuration information does not match the resource configuration information. In the embodiment of the present application, the above-mentioned "a time period" can refer to the time slot corresponding to the time domain interval that has occurred, and can also refer to the time slot corresponding to the time domain interval that has not occurred.

[0355] Furthermore, for mode1, the time domain interval may be a time domain interval corresponding to the resources configured by the base station for the UE; for mode2, the time domain interval may be a time domain interval in a resource pool configured by the base station for the UE, a resource pool configured by the opposite UE for the UE, or a resource pool selected by the UE itself. In practical applications, the time domain interval may be represented by a symbol, a slot, a subframe, a system frame, a superframe, etc.

[0356] Specifically, if the number of time slots overlapped by n DRX activation periods (indicated by DRX configuration information) and the time domain interval (indicated by resource configuration information) is less than a preset threshold (such as the total number of time slots overlapped by n onduration and the time domain interval < b), it can be considered that the DRX activation period and the time domain interval conflict within a time period; or, if the number of time slots overlapped by n DRX activation periods and the time domain interval divided by n times the number of time slots of the DRX activation period is less than a preset threshold (such as the total number of time slots overlapped by n onduration and the time domain interval / (n×onduration number of time slots) < a), it can be considered that the DRX activation period and the time domain interval conflict within a time period. The above parameters n, a, and b can be determined by the network according to factors such as the CBR of the resource pool and service characteristics, and can be configured or pre-configured through system information, RRC message or MAC CE / SCI; or, the value of n can also be defined as (the least common multiple of the number of time slots of onduration and the length of the bitmap of the time domain interval) / the number of time slots of onduration. Of course, the above parameters n, a, and b may also have other values, which are not specifically limited in the embodiments of the present application.

[0357] In conjunction with the above communication system, the present application provides a communication method. In the communication method, if the first DRX configuration information does not match the first resource configuration information, the first communication device sends the first information to the second communication device, and / or sends the second information to the third communication device. That is to say, if the activation period indicated by the first DRX configuration information conflicts with the time domain interval indicated by the first resource configuration information within at least one time period, the first communication device sends the first information to the second communication device (the subject that configures the DRX configuration information for the first communication device) to request the second communication device to configure (either for the first time or for reconfiguration) the DRX configuration information for the first side link of the first communication device (at this time, the first resource configuration information may be configured by the first communication device itself, or may be configured by the third communication device for the first communication device); or, if the activation period indicated by the first DRX configuration information conflicts with the time domain interval indicated by the first resource configuration information within at least one time period, the first communication device sends the second information to the third communication device (the subject that configures the resource configuration information for the first communication device) to request the third communication device to configure (either for the first time or for reconfiguration) the resource configuration information for the second side link of the first communication device (at this time, the first DRX configuration information may be configured by the second communication device for the first communication device, or may be configured by the first communication device itself). In some possible implementations, the first resource configuration information may be current resource configuration information, and the first DRX configuration information may be DRX configuration information received by the first communication device. Fig.15This is a schematic diagram of a fourth process of the communication method on the first communication device side in an embodiment of the present application, see Fig.15 As shown in the solid line, the method includes:

[0358] S1501: A first communication device receives first DRX configuration information from a second communication device;

[0359] Here, the first communication device receives first DRX configuration information configured by the second communication device for the first side link.

[0360] S1502: The first communication device determines whether the first DRX configuration information matches the first resource configuration information; if so, the process ends; if not, executing S1504;

[0361] The first resource configuration information may be current resource configuration information of the first communication device.

[0362] Here, after receiving the first DRX configuration information through S1501, the first communication device determines whether the first DRX configuration information matches the current resource configuration information of the first communication device (ie, the first resource configuration information).

[0363] For example, see Fig.15 As shown by the middle dotted line, before S1501, the above method may further include: S1503: the first communication device receives first resource configuration information from the third communication device.

[0364] Here, the first communication device receives the first resource configuration information configured by the third communication device for the second side link, and then the first communication device can determine the time domain interval corresponding to the second side link according to the first resource configuration information. Next, the first communication device can perform the second side link transmission in the time domain interval. At this time, the first resource configuration information can be understood as the current resource configuration information of the first communication device.

[0365] S1504: The first communication device sends first information to the second communication device, and / or the first communication device sends second information to the third communication device.

[0366] In an embodiment of the present application, when the first communication device determines that the DRX configuration information does not match the current resource configuration information, it can request the second communication device to perform DRX configuration, and / or request the third communication device to perform resource configuration, so that the DRX configuration information matches the resource configuration information.

[0367] The above communication method is described below by taking a specific scenario as an example.

[0368] In the first case, the first communication device is a TX UE, the second communication device is a RX UE, and the third communication device is a network device (such as a base station) to which the TXUE belongs. Fig.16 This is a schematic diagram of the first scenario of resource configuration and DRX configuration in the embodiment of the present application, see Fig.16 As shown, the RX UE or the base station to which the RX UE belongs configures the first DRX configuration information for the TX UE, and the TX UE or the base station to which the TX UE belongs configures the first resource configuration information for the TX UE. The first DRX configuration information can be used for the first side link between the RX UE and the TX UE, and can also be used for the first side link between the RX UE and other UEs, and the first resource configuration information can be used to indicate the resources configured by the base station for the TX UE in mode1, and can also be used to indicate the resource pool corresponding to the TX UE in mode2.

[0369] It can be understood that in the first case, the TX UE can determine the first resource configuration information by itself, then the TX UE executes S1502 after receiving the first DRX configuration information from the RX UE through S1501, and then executes S1504 when the first DRX configuration information does not match the first resource configuration information. At this time, exemplarily, the TX UE can send the first information to the RX UE or redetermine the resource configuration information by itself. Alternatively, the base station to which the TX UE belongs can configure the first resource configuration information for the TX UE, then the TX UE executes S1502 after receiving the first DRX configuration information from the RX UE through S1501, and then executes S1504 when the first DRX configuration information does not match the first resource configuration information. At this time, exemplarily, the TX UE can send the first information to the RX UE and / or send the second information to the base station to which the TX UE itself belongs.

[0370] In some possible implementations, the above S1504 may include but is not limited to the following specific implementations:

[0371] The first type: the TX UE sends the first information to the RX UE.

[0372] Specific implementation method 1: When the RX UE configures the first DRX configuration information for the TX UE, the TX UE sends DRX configuration failure information (such as the first information) to the RX UE to request to configure or reconfigure the DRX configuration information for the TX UE.

[0373] Specific implementation method two: When the base station to which the RX UE belongs configures the first DRX configuration information for the TX UE, the TXUE sends DRX configuration failure information (such as the first information) to the RX UE, and then the RX UE sends the fourth information to the base station to which it belongs, so as to indicate to the base station to which the RX UE belongs that the DRX configuration corresponding to the first side link has failed, so that after receiving the DRX configuration failure information, the base station can configure the first side link or reconfigure the DRX configuration information according to the identification information corresponding to the first DRX configuration information carried in the fourth information.

[0374] Here, the fourth information may be the above-mentioned DRX configuration failure information, that is, the RX UE forwards the DRX configuration failure information to the base station to which it belongs, or the fourth information may also include indication information generated by the RX UE based on the DRX configuration failure information to indicate that the DRX configuration corresponding to the first side link fails.

[0375] The above-mentioned DRX configuration failure information or fourth information may include at least one of the following: third information indicating DRX configuration failure (such as information indicating that the failure reason is SL DRX configuration conflict), identification information corresponding to the first DRX configuration information, a configuration failure type indicating that the DRX configuration information does not match the resource configuration information, an effective duration for not allowing the RX UE to configure DRX for the TX UE, the first resource configuration information (which can be understood as conflicting resource configuration information), expected DRX configuration information (which can be understood as recommended DRX configuration information, and the expected DRX configuration information may include some DRX parameters such as the DRX activation period or include all DRX parameters), a DRX adjustment amount, and corresponding identification information. Of course, the DRX configuration failure information may also include other information, which is not specifically limited in the embodiments of the present application.

[0376] In an embodiment of the present application, the above-mentioned DRX configuration failure information can be a PC5 RRC reconfiguration failure message, wherein the DRX configuration failure information can be carried in a PC5 RRC message, a PC5 MAC CE, an SCI bearer, etc.; the above-mentioned fourth information can be a sidelink UE information message, a SL failure information message or a SL DRX configuration failure indication information; wherein the fourth information can be carried in an RRC message, a MAC CE, a PUCCH bearer, etc.

[0377] The second method is that the TX UE sends the second information to the base station to which it belongs;

[0378] Specific implementation method three: The TX UE sends a mode switching request message (i.e., the second message) to the base station to which it belongs, so as to request the base station to switch the resource allocation mode of the TX UE from the first mode to the second mode, and configure or reconfigure resources for the first communication device according to the second mode. Here, the first mode can be mode1 or mode2. Correspondingly, when the first mode is mode1, the second mode is mode2; or, when the first mode is mode2, the second mode is mode1.

[0379] For example, if the TX UE is currently in mode 1, then the TX UE sends a mode switching request message to the base station to which it belongs, and the base station responds to the mode switching request message and switches the resource allocation mode of the TX UE from mode 1 to mode 2, and then reallocates resources to the TX UE according to mode 2, and the TX UE can receive the new resource configuration information sent by the base station. Alternatively, if the TX UE is currently in mode 2, then the TX UE sends a mode switching request message to the base station to which it belongs, and the base station responds to the mode switching request message and switches the resource allocation mode of the TX UE from mode 2 to mode 1, and then reallocates resources to the TX UE according to mode 1, and the TX UE can receive the new resource configuration information sent by the base station.

[0380] Specific implementation method 4: The TX UE sends resource configuration request information to the base station to which it belongs, so as to request the base station to configure or reconfigure resources for the TX UE;

[0381] Among them, the above-mentioned resource configuration request information includes at least one of the following: a request reason for indicating that the DRX configuration information and the resource configuration information do not match, the first DRX configuration information, identification information corresponding to the first DRX configuration information, expected resource configuration information (which can be understood as recommended resource configuration information) or a resource adjustment amount.

[0382] In the third case, the TX UE sends the first information to the RX UE and also sends the second information to the base station to which it belongs;

[0383] Specific implementation method five: The TX UE may first send resource configuration request information to the base station to which it belongs. After receiving the resource configuration request information, the base station attempts to reconfigure matching resources for the TX UE according to the first DRX configuration information carried in the resource configuration request information. If the base station can provide matching resources, the base station may send new resource configuration information to the TX UE to indicate the reconfigured resources; otherwise, the base station sends DRX configuration failure information to the TX UE, and the TX UE then sends DRX configuration failure information to the RX UE.

[0384] Specific implementation method six: The TX UE may first send resource configuration request information to the base station to which it belongs, and start a timer when sending the resource configuration request information to the base station. If the TX UE has not received the resource configuration information reconfigured by the base station for the second side link when the timer times out, the TX UE sends DRX configuration failure information to the RX UE.

[0385] Furthermore, in the case that the base station to which the RX UE belongs configures the first DRX configuration information for the TX UE, the RX UE may also send fourth information to the base station to which it belongs to indicate to the base station to which the RX UE belongs that the DRX configuration corresponding to the first side link has failed, so that after receiving the DRX configuration failure information, the base station can configure the first side link or reconfigure the DRX configuration information according to the identification information corresponding to the first DRX configuration information carried in the fourth information.

[0386] Specific implementation method seven: TX UE sends resource configuration request information to its base station, and sends DRX configuration failure information to RX UE. Optional. The resource configuration request information carries the expected resource configuration information and / or resource adjustment amount; the DRX configuration failure information carries the expected DRX configuration information and / or DRX adjustment amount.

[0387] It should be noted that the identification information corresponding to the DRX configuration information in the above specific implementation manner may include at least one of the following: target identifier, source identifier, side link connection identifier, source and target identifier pair, side link link identifier, logical channel identifier, resource pool identifier, side link service identifier, MAC PDU identifier, and TB identifier.

[0388] Exemplarily, the source identifier may be a source layer 1 identifier (source L1 ID) or a source layer 2 identifier (source L2 ID), and the target identifier may be a target layer 1 identifier (source L1 ID) or a target layer 2 identifier (source L2 ID).

[0389] In some possible embodiments, if the TX UE has a greater energy saving requirement, specific implementation modes three to six are preferred.

[0390] In the second case, the first communication device is a RX UE, the second communication device is a TX UE, and the third communication device is a network device (such as a base station) to which the RXUE belongs. Fig.17 This is a schematic diagram of a second scenario of resource configuration and DRX configuration in an embodiment of the present application, see Fig.17As shown, the TX UE or the base station to which the TX UE belongs configures the first DRX configuration information for the RX UE, and the RX UE or the base station to which the RX UE belongs configures the first resource configuration information for the RX UE. The first DRX configuration information is used for the first side link between the RX UE and the TX UE, and the first resource configuration information is used to indicate the receiving resources corresponding to the RX UE in mode2, and the receiving resources are used for the first side link.

[0391] It can be understood that in the second case, the RX UE can determine the first resource configuration information by itself, then the RX UE executes S1502 after receiving the first DRX configuration information from the TX UE through S1501, and then executes S1504 when the first DRX configuration information does not match the first resource configuration information. At this time, exemplarily, the RX UE can send the first information to the TX UE or redetermine the resource configuration information by itself. Alternatively, the base station to which the RX UE belongs can configure the first resource configuration information for the RX UE, then the RX UE executes S1502 after receiving the first DRX configuration information from the TX UE through S1501, and then executes S1504 when the first DRX configuration information does not match the first resource configuration information. At this time, exemplarily, the RX UE can send the first information to the TX UE and / or send the second information to the base station to which the RX UE itself belongs.

[0392] In some possible implementations, the above S1504 may include but is not limited to the following specific implementations:

[0393] The first type: the RX UE sends the first information to the TX UE.

[0394] Specific implementation method 1: When the TX UE configures the first DRX configuration information for the RX UE, the RX UE sends DRX configuration failure information (such as the first information) to the TX UE to request the TX UE to configure or reconfigure the DRX configuration information.

[0395] Specific implementation method two: When the base station to which the TX UE belongs configures the first DRX configuration information for the RX UE, the RX UE sends DRX configuration failure information (such as the first information) to the TX UE, and then the TX UE sends the fourth information to the base station to which it belongs to indicate to the base station to which the TX UE belongs that the DRX configuration corresponding to the first side link has failed, so that after receiving the DRX configuration failure information, the base station can configure the first side link or reconfigure the DRX configuration information according to the identification information corresponding to the first DRX configuration information carried in the fourth information.

[0396] The above-mentioned DRX configuration failure information or fourth information may include at least one of the following: third information indicating DRX configuration failure (such as information indicating that the failure reason is SL DRX configuration conflict), identification information corresponding to the first DRX configuration information, a configuration failure type indicating that the DRX configuration information does not match the resource configuration information, an effective duration for not allowing the TX UE to configure DRX for the RX UE, the first resource configuration information (which can be understood as conflicting resource configuration information), expected DRX configuration information (which can be understood as recommended DRX configuration information, and the expected DRX configuration information may include some DRX parameters such as the DRX activation period or include all DRX parameters), a DRX adjustment amount, and corresponding identification information. Of course, the DRX configuration failure information may also include other information, which is not specifically limited in the embodiments of the present application.

[0397] The second method is that the RX UE sends the second information to the base station to which it belongs;

[0398] Specific implementation method three: The RX UE sends a mode switching request message (i.e., the second message) to the base station to which it belongs, so as to request the base station to switch the resource allocation mode of the RX UE from the first mode to the second mode, and configure or reconfigure resources for the first communication device according to the second mode. For example, if the RX UE is currently in mode2, then the RX UE sends a mode switching request message to the base station to which it belongs, and the base station responds to the mode switching request message, switches the resource allocation mode of the RX UE from mode2 to mode1, and then reallocates resources for the RX UE according to mode1, and the RX UE can receive the new resource configuration information sent by the base station.

[0399] Specific implementation method 4: The RX UE sends resource configuration request information to the base station to which it belongs, so as to request the base station to configure or reconfigure resources for the RX UE;

[0400] Among them, the above-mentioned resource configuration request information includes at least one of the following: a request reason for indicating that the DRX configuration information and the resource configuration information do not match, the first DRX configuration information, identification information corresponding to the first DRX configuration information, expected resource configuration information (which can be understood as recommended resource configuration information) or a resource adjustment amount.

[0401] In the third case, the RX UE sends the first information to the TX UE and also sends the second information to the base station to which it belongs;

[0402] Specific implementation method five: The RX UE may first send resource configuration request information to the base station to which it belongs. After receiving the resource configuration request information, the base station attempts to reconfigure matching resources for the RX UE according to the first DRX configuration information carried in the resource configuration request information. If the base station can provide matching resources, the base station may send new resource configuration information to the RX UE to indicate the reconfigured resources; otherwise, the base station sends DRX configuration failure information to the RX UE, and the RX UE then sends DRX configuration failure information to the TX UE.

[0403] Specific implementation method six: The RX UE may first send resource configuration request information to the base station to which it belongs, and start a timer when sending the resource configuration request information to the base station. If the RX UE has not received the resource configuration information reconfigured by the base station for the second side link when the timer times out, the RX UE sends DRX configuration failure information to the TXUE.

[0404] Furthermore, in the case that the base station to which the TX UE belongs configures the first DRX configuration information for the RX UE, the TX UE may also send fourth information to the base station to which it belongs to indicate to the base station to which the TX UE belongs that the DRX configuration corresponding to the first side link has failed, so that after receiving the DRX configuration failure information, the base station can configure the first side link or reconfigure the DRX configuration information according to the identification information corresponding to the first DRX configuration information carried in the fourth information.

[0405] Specific implementation method seven: RX UE sends resource configuration request information to its base station, and sends DRX configuration failure information to TX UE. Optional. The resource configuration request information carries the expected resource configuration information and / or resource adjustment amount; the DRX configuration failure information carries the expected DRX configuration information and / or DRX adjustment amount.

[0406] It should be noted that the identification information corresponding to the DRX configuration information in the above specific implementation manner may include at least one of the following: a target identification, a source identification, a side link connection identification, a source and target identification pair, a side link link identification, a logical channel identification, a resource pool identification, a side link service identification, a MAC PDU identification, and a TB identification. Exemplarily, the above source identification may be a source layer 1 identification (source L1 ID) or a source layer 2 identification (source L2 ID), and the above target identification may be a target layer 1 identification (source L1 ID) or a target layer 2 identification (source L2 ID).

[0407] In a third case, the first communication device is a RX UE, the second communication device is a RX UE or a network device (such as a base station) to which the RX UE belongs, and the third communication device is a TX UE. Fig.18This is a schematic diagram of a third scenario of resource configuration and DRX configuration in an embodiment of the present application, see Fig.18 As shown, the RX UE or the base station to which the RX UE belongs configures first DRX configuration information for the RX UE, and the TX UE or the base station to which the TX UE belongs configures first resource configuration information for the RX UE. The first resource configuration information may include resource configuration information for instructing the first communication device to sense.

[0408] In some possible implementations, the RX UE may be replaced by an "assisting UE" and the TX UE may be replaced by an "assisted UE". Then, the first resource configuration information may be auxiliary configuration information (such as resource configuration information including information for instructing the RX UE to perform sensing). The assisted UE sends the auxiliary configuration information to the assisting UE, and the assisting UE may send the auxiliary information (such as one or more resource sets) to the assisted UE according to the auxiliary configuration information.

[0409] It can be understood that the assisting UE can be used to assist the assisted UE in determining resource configuration information, and the resource configuration information determined by the assisted UE can be used for the side link corresponding to the assisted UE.

[0410] In some possible implementations, in a relay scenario, the assisting UE may be understood as a relay (delay) UE, and the assisted UE may be understood as a remote (remote) UE. The relay UE may assist the remote UE in determining resource configuration information.

[0411] Furthermore, the resource allocation mode of the RX UE may be that the UE autonomously selects resources, such as mode 2 in the aforementioned embodiment or enhanced mode 2. Exemplarily, the enhanced mode 2 may include mode 2 based on (inter) UE assistance, mode 2 based on (inter) UE collaboration, mode 2b, etc.

[0412] It should be noted that the sensing described in the embodiments of the present application may include sensing when UE autonomous resource allocation (such as mode 2, mode 4 and related enhancement methods) is adopted, or it may only refer to some behaviors in sensing (such as monitoring SCI).

[0413] In some possible implementations, the above S1504 may include but is not limited to the following specific implementations:

[0414] The first type: the RX UE sends the first information to the base station to which it belongs.

[0415] Specific implementation method 1: When the base station to which the RXUE belongs configures the first DRX configuration information for the RX UE, the RXUE sends DRX configuration failure information (such as the first information) to the base station to which it belongs to request the base station to configure or reconfigure DRX configuration information for the first side link after receiving the DRX configuration failure information.

[0416] The above-mentioned DRX configuration failure information may be a sidelink UE information message, a SL failure information message or a SL DRX configuration failure indication information; wherein, the DRX configuration failure information may be carried in an RRC message, a MAC CE, a PUCCH bearer, and the like.

[0417] The above-mentioned DRX configuration failure information may include at least one of the following: third information indicating DRX configuration failure (such as information indicating that the reason for failure is SL DRX configuration conflict), identification information corresponding to the first DRX configuration information, a configuration failure type indicating that the DRX configuration information does not match the resource configuration information, an effective duration for not allowing TX UE to configure DRX for RX UE, first resource configuration information (which can be understood as conflicting resource configuration information), expected DRX configuration information (which can be understood as recommended DRX configuration information, and the expected DRX configuration information may include some DRX parameters such as DRX activation period or all DRX parameters), DRX adjustment amount and corresponding identification information. Of course, the DRX configuration failure information may also include other information, which is not specifically limited in the embodiments of the present application.

[0418] In the second method, the RX UE sends the second information to the TX UE;

[0419] Specific implementation method 2: RX UE sends mode switching request information (i.e., second information) to TX UE to request TXUE to switch the resource allocation mode of RX UE from the first mode to the second mode, and configure or reconfigure resources for the first communication device according to the second mode. For example, if RX UE is currently in mode2, then RX UE sends mode switching request information to TX UE, TX UE responds to the mode switching request information, switches the resource allocation mode of RX UE from mode2 to mode1, and then, reallocates resources for RX UE according to mode1, and RX UE can receive the new resource configuration information sent by TX UE.

[0420] Specific implementation method three: The RX UE sends resource configuration request information to the TX UE to request the TX UE to configure or reconfigure resources for the RX UE;

[0421] Among them, the above-mentioned resource configuration request information includes at least one of the following: a request reason for indicating that the DRX configuration information and the resource configuration information do not match, the first DRX configuration information, identification information corresponding to the first DRX configuration information, expected resource configuration information (which can be understood as recommended resource configuration information) or a resource adjustment amount.

[0422] In the third case, the RX UE sends the first information to the base station to which it belongs, and also sends the second information to the TX UE;

[0423] Specific implementation method four: RX UE may first send resource configuration request information to TX UE. After receiving the resource configuration request information, TX UE attempts to reconfigure matching resources for RX UE according to the first DRX configuration information carried in the resource configuration request information. Then, if TX UE can provide matching resources, TX UE may send new resource configuration information to RX UE to indicate the reconfigured resources; otherwise, TX UE sends DRX configuration failure information to RX UE, and RX UE then sends DRX configuration failure information to the base station to which it belongs.

[0424] Specific implementation method five: The RX UE may first send resource configuration request information to the TX UE, and start a timer when sending the resource configuration request information to the TX UE. If the RX UE has not received the resource configuration information reconfigured by the TX UE for the second side link when the timer times out, the RX UE sends DRX configuration failure information to the base station to which it belongs.

[0425] Further, in a case where the base station to which the TX UE belongs configures the first resource configuration information for the RX UE, the TX UE may also send resource configuration request information (such as the fourth information) to the base station to which it belongs, so as to instruct the base station to which the TX UE belongs to reconfigure resources for the first side link, so that the base station configures or reconfigures the resource configuration information for the first side link after receiving the resource configuration request information.

[0426] Specific implementation method 6: RX UE sends resource configuration request information to TX UE, and sends DRX configuration failure information to its own base station. Optional. The resource configuration request information carries the expected DRX configuration information and / or DRX adjustment amount; the DRX configuration failure information carries the expected resource configuration information and / or resource adjustment amount.

[0427] It should be noted that the identification information corresponding to the DRX configuration information in the above specific implementation manner may include at least one of the following: target identifier, source identifier, side link connection identifier, source and target identifier pair, side link link identifier, logical channel identifier, resource pool identifier, side link service identifier, MAC PDU identifier, and TB identifier.

[0428] Exemplarily, the source identifier may be a source layer 1 identifier (source L1 ID) or a source layer 2 identifier (source L2 ID), and the target identifier may be a target layer 1 identifier (source L1 ID) or a target layer 2 identifier (source L2 ID).

[0429] In a fourth case, the first communication device is a RX UE, the second communication device is a TX UE, and the third communication device is a network device (such as a base station) to which the RXUE belongs. Fig.19 FIG. 4 is a schematic diagram of a fourth scenario of resource configuration and DRX configuration in an embodiment of the present application, see Fig.19 As shown, the TX UE or the base station to which the TX UE belongs configures the first DRX configuration information for the RX UE, and the RX UE or the base station to which the RX UE belongs configures the first resource configuration information for the RX UE. Among them, the first DRX configuration resource is used for the first side link between the RX UE and the TX UE, the first resource configuration information is used for the second side link between the RX UE as the TX UE and other UEs (i.e., the fourth communication device), and the first resource configuration information is used to instruct the RX UE to send side link data on the second side link, which can also be understood as the first resource configuration information is used for the RX UE (as the TX UE) to send side link data to other UEs (i.e., the fourth communication device).

[0430] It can be understood that in the fourth case, the RX UE can determine the first resource configuration information by itself, then the RX UE executes S1502 after receiving the first DRX configuration information from the TX UE through S1501, and then executes S1504 when the first DRX configuration information does not match the first resource configuration information. At this time, exemplarily, the RX UE can send the first information to the TX UE or redetermine the resource configuration information by itself. Alternatively, the base station to which the RX UE belongs can configure the first resource configuration information for the RX UE, then the RX UE executes S1502 after receiving the first DRX configuration information from the TX UE through S1501, and then executes S1504 when the first DRX configuration information does not match the first resource configuration information. At this time, exemplarily, the RX UE can send the first information to the TX UE and / or send the second information to the base station to which the RX UE itself belongs.

[0431] In some possible implementations, the above S1504 may include but is not limited to the following specific implementations:

[0432] The first type: the RX UE sends the first information to the TX UE.

[0433] Specific implementation method 1: When the TX UE configures the first DRX configuration information for the RX UE, the RX UE sends DRX configuration failure information (such as the first information) to the TX UE to request to configure or reconfigure the DRX configuration information for the TX UE.

[0434] Specific implementation method two: When the base station to which the TX UE belongs configures the first DRX configuration information for the RX UE, the RX UE sends DRX configuration failure information (such as the first information) to the TX UE, and then the TX UE sends the fourth information to the base station to which it belongs to indicate to the base station to which the TX UE belongs that the DRX configuration corresponding to the first side link has failed, so that after receiving the DRX configuration failure information, the base station can configure the first side link or reconfigure the DRX configuration information according to the identification information corresponding to the first DRX configuration information carried in the fourth information.

[0435] The above-mentioned DRX configuration failure information may include at least one of the following: third information indicating DRX configuration failure (such as information indicating that the reason for failure is SL DRX configuration conflict), identification information corresponding to the first DRX configuration information, a configuration failure type indicating that the DRX configuration information does not match the resource configuration information, an effective duration for not allowing TX UE to configure DRX for RX UE, first resource configuration information (which can be understood as conflicting resource configuration information), expected DRX configuration information (which can be understood as recommended DRX configuration information, and the expected DRX configuration information may include some DRX parameters such as DRX activation period or all DRX parameters), DRX adjustment amount and corresponding identification information. Of course, the DRX configuration failure information may also include other information, which is not specifically limited in the embodiments of the present application.

[0436] The second method is that the RX UE sends the second information to the base station to which it belongs;

[0437] Specific implementation method three: The RX UE sends a mode switching request message (i.e., the second message) to the base station to which it belongs, so as to request the base station to switch the resource allocation mode of the RX UE from the first mode to the second mode, and configure or reconfigure resources for the first communication device according to the second mode. For example, if the RX UE is currently in mode2, then the RX UE sends a mode switching request message to the base station to which it belongs, and the base station responds to the mode switching request message, switches the resource allocation mode of the RX UE from mode2 to mode1, and then reallocates resources for the RX UE according to mode1, and the RX UE can receive the new resource configuration information sent by the base station.

[0438] Specific implementation method 4: The RX UE sends resource configuration request information to the base station to which it belongs, so as to request the base station to configure or reconfigure resources for the RX UE;

[0439] Among them, the above-mentioned resource configuration request information includes at least one of the following: a request reason for indicating that the DRX configuration information and the resource configuration information do not match, the first DRX configuration information, identification information corresponding to the first DRX configuration information, expected resource configuration information (which can be understood as recommended resource configuration information) or a resource adjustment amount.

[0440] In the third case, the RX UE sends the first information to the TX UE and also sends the second information to the base station to which it belongs;

[0441] Specific implementation method five: The RX UE may first send resource configuration request information to the base station to which it belongs. After receiving the resource configuration request information, the base station attempts to reconfigure matching resources for the RX UE according to the first DRX configuration information carried in the resource configuration request information. If the base station can provide matching resources, the base station may send new resource configuration information to the RX UE to indicate the reconfigured resources; otherwise, the base station sends DRX configuration failure information to the RX UE, and the RX UE then sends DRX configuration failure information to the TX UE.

[0442] Specific implementation method six: The RX UE may first send resource configuration request information to the base station to which it belongs, and start a timer when sending the resource configuration request information to the base station. If the RX UE has not received the resource configuration information reconfigured by the base station for the second side link when the timer times out, the RX UE sends DRX configuration failure information to the TXUE.

[0443] Furthermore, in the case that the base station to which the TX UE belongs configures the first DRX configuration information for the RX UE, the TX UE may also send fourth information to the base station to which it belongs to indicate to the base station to which the TX UE belongs that the DRX configuration corresponding to the first side link has failed, so that after receiving the DRX configuration failure information, the base station can configure the first side link or reconfigure the DRX configuration information according to the identification information corresponding to the first DRX configuration information carried in the fourth information.

[0444] Specific implementation method seven: RX UE sends resource configuration request information to its base station, and sends DRX configuration failure information to TX UE. Optional. The resource configuration request information carries the expected resource configuration information and / or resource adjustment amount; the DRX configuration failure information carries the expected DRX configuration information and / or DRX adjustment amount.

[0445] It should be noted that the identification information corresponding to the DRX configuration information in the above specific implementation manner may include at least one of the following: a target identification, a source identification, a side link connection identification, a source and target identification pair, a side link link identification, a logical channel identification, a resource pool identification, a side link service identification, a MAC PDU identification, and a TB identification. Exemplarily, the above source identification may be a source layer 1 identification (source L1 ID) or a source layer 2 identification (source L2 ID), and the above target identification may be a target layer 1 identification (source L1 ID) or a target layer 2 identification (source L2 ID).

[0446] In a fifth case, the first communication device is a RX UE, the second communication device is a RX UE or a network device (such as a base station) to which the RX UE belongs, and the third communication device is a TX UE. Fig. 20 This is a schematic diagram of the fifth scenario of resource configuration and DRX configuration in the embodiment of the present application, see Fig. 20 As shown, the RX UE or the base station to which the RX UE belongs configures first DRX configuration information for the RX UE, and the TX UE or the base station to which the TX UE belongs configures first resource configuration information for the RX UE; wherein the first resource configuration information is used to indicate one or more resource sets corresponding to the RX UE.

[0447] In some possible implementations, the RX UE may be replaced by "assisted UE", "scheduled UE" or "member UE"; the TX UE may be replaced by "assisted UE", "scheduled UE" or "head UE". Then, the first resource configuration information may be auxiliary information, which is used to indicate one or more resource sets. The assisted UE sends the auxiliary configuration information to the assisting UE, and the assisting UE may send the auxiliary information to the assisted UE according to the auxiliary configuration information.

[0448] Further, the resource allocation mode of the RX UE may be for the UE to autonomously select resources, such as mode 2 described in the above embodiment or enhanced mode 2. Exemplarily, the enhanced mode 2 may include mode 2 based on (inter) UE assistance, mode 2 based on (inter) UE collaboration, mode 2d, etc.

[0449] It can be understood that the assisting UE can be used to assist the assisted UE in determining resource configuration information, and the resource configuration information determined by the assisted UE can be used for the side link corresponding to the assisted UE.

[0450] In some possible implementations, in a relay scenario, the assisting UE may be understood as a relay (delay) UE, and the assisted UE may be understood as a remote (remote) UE. The relay UE may assist the remote UE in determining resource configuration information, for example, the relay UE sends the first resource configuration information configured by the base station to the remote UE.

[0451] In some possible implementations, the above S1504 may include but is not limited to the following specific implementations:

[0452] The first type: the RX UE sends the first information to the base station to which it belongs.

[0453] Specific implementation method 1: When the base station to which the RX UE belongs configures the first DRX configuration information for the RX UE, the RX UE sends DRX configuration failure information (such as the first information) to the base station to which it belongs to request the base station to configure or reconfigure the DRX configuration information for the first side link after receiving the DRX configuration failure information.

[0454] In actual applications, the above-mentioned DRX configuration failure information can be a sidelink UE information message, a SLfailure information message or a SL DRX configuration failure indication information, wherein the SL DRX configuration failure indication information can be carried in an RRC message, MACCE, SCI, etc.

[0455] The above-mentioned DRX configuration failure information may include at least one of the following: third information indicating DRX configuration failure (such as information indicating that the reason for failure is SL DRX configuration conflict), identification information corresponding to the first DRX configuration information, a configuration failure type indicating that the DRX configuration information does not match the resource configuration information, an effective duration for not allowing TX UE to configure DRX for RX UE, first resource configuration information (which can be understood as conflicting resource configuration information), expected DRX configuration information (which can be understood as recommended DRX configuration information, and the expected DRX configuration information may include some DRX parameters such as DRX activation period or all DRX parameters), DRX adjustment amount and corresponding identification information. Of course, the DRX configuration failure information may also include other information, which is not specifically limited in the embodiments of the present application.

[0456] In the second method, the RX UE sends the second information to the TX UE;

[0457] Specific implementation method 2: RX UE sends mode switching request information (i.e., second information) to TX UE to request TXUE to switch the resource allocation mode of RX UE from the first mode to the second mode, and configure or reconfigure resources for the first communication device according to the second mode. For example, if RX UE is currently in mode2, then RX UE sends mode switching request information to TX UE, TX UE responds to the mode switching request information, switches the resource allocation mode of RX UE from mode2 to mode1, and then, reallocates resources for RX UE according to mode1, and RX UE can receive the new resource configuration information sent by TX UE.

[0458] Specific implementation method three: The RX UE sends resource configuration request information to the TX UE to request the TX UE to configure or reconfigure resources for the RX UE;

[0459] Among them, the above-mentioned resource configuration request information includes at least one of the following: a request reason for indicating that the DRX configuration information and the resource configuration information do not match, the first DRX configuration information, identification information corresponding to the first DRX configuration information, expected resource configuration information (which can be understood as recommended resource configuration information) or a resource adjustment amount.

[0460] In the third case, the RX UE sends the first information to the base station to which it belongs, and also sends the second information to the TX UE;

[0461] Specific implementation method four: RX UE may first send resource configuration request information to TX UE. After receiving the resource configuration request information, TX UE attempts to reconfigure matching resources for RX UE according to the first DRX configuration information carried in the resource configuration request information. Then, if TX UE can provide matching resources, TX UE may send new resource configuration information to RX UE to indicate the reconfigured resources; otherwise, TX UE sends DRX configuration failure information to RX UE, and RX UE then sends DRX configuration failure information to the base station to which it belongs.

[0462] Specific implementation method five: The RX UE may first send resource configuration request information to the TX UE, and start a timer when sending the resource configuration request information to the TX UE. If the RX UE has not received the resource configuration information reconfigured by the TX UE for the second side link when the timer times out, the RX UE sends DRX configuration failure information to the base station to which it belongs.

[0463] Furthermore, when the base station to which the TX UE belongs configures the first resource configuration information for the RX UE, the TX UE may also send resource configuration request information to the base station to which it belongs, so as to instruct the base station to which the TX UE belongs to reconfigure resources for the first side link, so that the base station configures or reconfigures the resource configuration information for the first side link after receiving the resource configuration request information.

[0464] Specific implementation method six: RX UE sends resource configuration request information to TX UE, and sends DRX configuration failure information to its own base station. Optional. The resource configuration request information carries the expected resource configuration information and / or resource adjustment amount; the DRX configuration failure information carries the expected DRX configuration information and / or DRX adjustment amount.

[0465] It should be noted that the identification information corresponding to the DRX configuration information in the above specific implementation manner may include at least one of the following: a target identification, a source identification, a side link connection identification, a source and target identification pair, a side link link identification, a logical channel identification, a resource pool identification, a side link service identification, a MAC PDU identification, and a TB identification. Exemplarily, the above source identification may be a source layer 1 identification (source L1 ID) or a source layer 2 identification (source L2 ID), and the above target identification may be a target layer 1 identification (source L1 ID) or a target layer 2 identification (source L2 ID).

[0466] In some possible implementations, the first resource configuration information may be resource configuration information received by the first communication device, and the first DRX configuration information may be current DRX configuration information of the first communication device. Then, Fig.21 This is a fifth flow chart of the communication method on the first communication device side in the embodiment of the present application, see Fig.21 As shown in the solid line, the method includes:

[0467] S2101: The first communication device receives first resource configuration information from a third communication device;

[0468] Here, the first communication device receives first resource configuration information configured by the third communication device for the second side link.

[0469] S2102: The first communication device determines whether the first resource configuration information matches the first DRX configuration information; if so, the process ends; if not, executing S2104;

[0470] The first DRX configuration information may be current DRX configuration information of the first communication device.

[0471] Here, after receiving the first resource configuration information through S2101, the first communication device determines whether the first resource configuration information matches the current DRX configuration information of the first communication device (ie, the first DRX configuration information).

[0472] For example, see Fig.21 As shown by the middle dotted line, before S2101, the above method may further include: S2103: the first communication device receives first DRX configuration information from the second communication device.

[0473] Here, the first communication device receives the first DRX configuration information configured by the second communication device for the first side link, and then the first communication device can perform discontinuous reception according to the first DRX configuration information. At this time, the first DRX configuration information can be understood as the current DRX configuration information of the first communication device.

[0474] S2104: The first communication device sends first information to the second communication device, and / or the first communication device sends second information to the third communication device.

[0475] In an embodiment of the present application, when the first communication device determines that the resource configuration information does not match the current DRX configuration information, it can request the second communication device to perform DRX configuration, and / or request the third communication device to perform resource configuration, so that the DRX configuration information matches the resource configuration information.

[0476] The above communication method is described below by taking a specific scenario as an example.

[0477] In a sixth case, the first communication device is a TX UE, the second communication device is a RX UE, and the third communication device is a network device (such as a base station) to which the TXUE belongs. Fig. 22 This is a schematic diagram of the sixth scenario of resource configuration and DRX configuration in the embodiment of the present application, see Fig. 22 As shown, the TX UE, RX UE or the base station to which the RX UE belongs configures the first DRX configuration information for the TX UE, and the base station to which the TX UE belongs configures the first resource configuration information for the TX UE. The first resource configuration information can be used to indicate the resources configured by the base station for the TX UE in mode1, and can also be used to indicate the resource pool corresponding to the TX UE in mode2.

[0478] It can be understood that in the sixth case, the TX UE can determine the first DRX configuration information by itself, then, after receiving the first resource configuration information from the base station to which the TX UE belongs through S2101, the TX UE executes S2102, and then executes S2104 when the first DRX configuration information does not match the first resource configuration information. At this time, exemplarily, the TX UE can send the second information to the base station to which the TX UE belongs or redetermine the DRX configuration information by itself. Alternatively, the RX UE or the base station to which the RX UE belongs can configure the first DRX configuration information for the TX UE, then, after receiving the first resource configuration information from the base station to which the TX UE belongs through S2101, the TX UE executes S2102, and then executes S2104 when the first DRX configuration information does not match the first resource configuration information. At this time, exemplarily, the TX UE can send the first information to the RX UE and / or send the second information to the base station to which the TX UE itself belongs.

[0479] In some possible implementations, the above S2104 may include but is not limited to the following specific implementations:

[0480] The first type: the TX UE sends the first information to the RX UE.

[0481] Specific implementation method 1: When the RX UE or the base station to which the RX UE belongs configures the first DRX configuration information for the TX UE, the TX UE sends DRX configuration request information (such as the first information) to the RX UE to request to configure or reconfigure the DRX configuration information for the TX UE.

[0482] Among them, the above-mentioned DRX configuration request information includes at least one of the following: a request reason for indicating that the DRX configuration information does not match the resource configuration information, the first resource configuration information, identification information corresponding to the first resource configuration information, the first DRX configuration information, and identification information corresponding to the first DRX configuration information.

[0483] In practical applications, the above-mentioned DRX configuration request information may be a PC5 RRC reconfiguration failure message, wherein the DRX configuration request information may be carried in a PC5 RRC message, a PC5 MAC CE, an SCI bearer, and the like.

[0484] The second method is that the TX UE sends the second information to the base station to which it belongs;

[0485] Specific implementation method 2: TX UE sends mode switching request information (i.e., second information) to the base station to which it belongs, so as to request the base station to switch the resource allocation mode of TX UE from the first mode to the second mode, and configure or reconfigure resources for the first communication device according to the second mode. For example, if TX UE is currently in mode2, then TX UE sends mode switching request information to the base station to which it belongs, and the base station responds to the mode switching request information, switches the resource allocation mode of TX UE from mode2 to mode1, and then reallocates resources for TX UE according to mode1, and TX UE can receive the new resource configuration information sent by the base station. Alternatively, if TX UE is currently in mode1, then TX UE sends mode switching request information to the base station to which it belongs, and the base station responds to the mode switching request information, switches the resource allocation mode of TX UE from mode1 to mode2, and then reallocates resources for TX UE according to mode2, and TX UE can receive the new resource configuration information sent by the base station.

[0486] Specific implementation method three: The TX UE sends resource configuration failure information to the base station to which it belongs, so as to request the base station to configure or reconfigure resources for the TX UE;

[0487] Among them, the above-mentioned resource configuration failure information may include at least one of the following: fourth information used to indicate resource configuration failure, a configuration failure type used to indicate that the resource configuration information does not match the DRX configuration information, the first DRX configuration information (the first DRX configuration information may include partial DRX parameters such as the DRX activation period or all DRX parameters), identification information corresponding to the first DRX configuration information, expected resource configuration information (which can be understood as recommended resource configuration information) or resource adjustment amount.

[0488] In the third case, the TX UE sends the first information to the RX UE and also sends the second information to the base station to which it belongs;

[0489] Specific implementation method four: The TX UE may first send resource configuration failure information to the base station to which it belongs. After receiving the resource configuration failure information, the base station attempts to reconfigure matching resources for the TX UE according to the first DRX configuration information carried in the resource configuration failure information. If the base station can provide matching resources, the base station may send new resource configuration information to the TX UE to indicate the reconfigured resources; otherwise, the base station sends resource configuration failure information to the TX UE, and the TX UE then sends DRX configuration request information to the RX UE.

[0490] Specific implementation method five: TX UE sends resource configuration failure information to its base station, and sends DRX configuration request information to RX UE. Optionally, the resource configuration failure information carries the expected resource configuration information and / or resource adjustment amount; the DRX configuration request information carries the expected DRX configuration information and / or DRX adjustment amount.

[0491] It should be noted that the identification information corresponding to the DRX configuration information in the above specific implementation manner may include at least one of the following: target identifier, source identifier, side link connection identifier, source and target identifier pair, side link link identifier, logical channel identifier, resource pool identifier, side link service identifier, MAC PDU identifier, and TB identifier.

[0492] Exemplarily, the source identifier may be a source layer 1 identifier (source L1 ID) or a source layer 2 identifier (source L2 ID), and the target identifier may be a target layer 1 identifier (source L1 ID) or a target layer 2 identifier (source L2 ID).

[0493] In a seventh case, the first communication device is an RX UE, the second communication device is a network device (such as a base station) to which the RX UE belongs, and the third communication device is a TX UE. Fig.23 This is a schematic diagram of the seventh scenario of resource configuration and DRX configuration in the embodiment of the present application, see Fig.23 As shown, the RX UE, the TX UE or the base station to which the TX UE belongs configures the first DRX configuration information for the RX UE, and the base station to which the RX UE belongs configures the first resource configuration information for the RX UE. The first resource configuration information is used to indicate the receiving resources corresponding to the RX UE in mode2.

[0494] It can be understood that in the seventh case, the RX UE can determine the first DRX configuration information by itself, then, after receiving the first resource configuration information from the base station to which the RX UE belongs through S2101, the RX UE executes S2102, and then executes S2104 when the first DRX configuration information does not match the first resource configuration information. At this time, exemplarily, the RX UE can send the second information to the base station to which the RX UE belongs or redetermine the DRX configuration information by itself. Alternatively, the TX UE or the base station to which the TX UE belongs can configure the first DRX configuration information for the RX UE, then, after receiving the first resource configuration information from the base station to which the RX UE belongs through S2101, the RX UE executes S2102, and then executes S2104 when the first DRX configuration information does not match the first resource configuration information. At this time, exemplarily, the RX UE can send the first information to the TX UE and / or send the second information to the base station to which the RX UE itself belongs.

[0495] In some possible implementations, the above S2104 may include but is not limited to the following specific implementations:

[0496] The first type: the RX UE sends the first information to the TX UE.

[0497] Specific implementation method 1: When the TX UE or the base station to which the TX UE belongs configures the first DRX configuration information for the RX UE, the RX UE sends DRX configuration request information (such as the first information) to the TX UE to request to configure or reconfigure the DRX configuration information for the TX UE.

[0498] The DRX configuration request information includes at least one of the following: a request reason indicating that the DRX configuration information does not match the resource configuration information, the first resource configuration information, identification information corresponding to the first resource configuration information, the expected DRX configuration information, and the DRX adjustment amount.

[0499] The second method is that the RX UE sends the second information to the base station to which it belongs;

[0500] Specific implementation method 2: The RX UE sends resource configuration failure information to the base station to which it belongs, so as to request the base station to configure or reconfigure resources for the TX UE;

[0501] Among them, the above-mentioned resource configuration failure information may include at least one of the following: fifth information used to indicate resource configuration failure, a configuration failure type used to indicate that the resource configuration information does not match the DRX configuration information, the first DRX configuration information (the first DRX configuration information may include partial DRX parameters such as the DRX activation period or include all DRX parameters), identification information corresponding to the first DRX configuration information, expected resource configuration information (which can be understood as recommended resource configuration information) or resource adjustment amount.

[0502] In the third case, the RX UE sends the first information to the TX UE and also sends the second information to the base station to which it belongs;

[0503] Specific implementation method three: RX UE sends resource configuration failure information to its base station, and sends DRX configuration request information to TX UE. Optionally, the resource configuration failure information carries the expected resource configuration information and / or resource adjustment amount; the DRX configuration request information carries the expected DRX configuration information and / or DRX adjustment amount.

[0504] It should be noted that the identification information corresponding to the DRX configuration information in the above specific implementation manner may include at least one of the following:

[0505] Target identifier, source identifier, side link connection identifier, source and target identifier pair, side link link identifier, logical channel identifier, resource pool identifier, side link service identifier, MAC PDU identifier, TB identifier. Exemplarily, the source identifier may be a source layer 1 identifier (source L1 ID) or a source layer 2 identifier (source L2 ID), and the target identifier may be a target layer 1 identifier (source L1 ID) or a target layer 2 identifier (source L2 ID).

[0506] In the eighth case, similar to the scenario of the third case above, the first communication device is an RX UE, the second communication device is a network device (such as a base station) to which the RX UE belongs, and the third communication device is a TX UE. Fig.24 This is a schematic diagram of the eighth scenario of resource configuration and DRX configuration in the embodiment of the present application, see Fig.24 As shown, the RX UE or the base station to which the RX UE belongs configures the first DRX configuration information for the RX UE, and the TX UE or the base station to which the TX UE belongs configures the first resource configuration information for the RX UE. The first resource configuration information may include resource configuration information for instructing the RX UE to sense.

[0507] It can be understood that in the eighth case, the RX UE can determine the first DRX configuration information by itself, then, after receiving the first resource configuration information (including the resource configuration information for instructing the RX UE to perceive) from the TX UE through S2101, the RX UE executes S2102, and then executes S2104 when the first DRX configuration information does not match the first resource configuration information. At this time, exemplarily, the RX UE can send the second information to the TX UE or redetermine the DRX configuration information by itself. Alternatively, the base station to which the RX UE belongs can configure the first DRX configuration information for the RX UE, then, after receiving the first resource configuration information from the TX UE through S2101, the RX UE executes S2102, and then executes S2104 when the first DRX configuration information does not match the first resource configuration information. At this time, exemplarily, the RX UE can send the first information to the base station to which the RX UE belongs and / or send the second information to the TX UE.

[0508] In some possible implementations, the above S2104 may include but is not limited to the following specific implementations:

[0509] The first type: the TX UE sends the first information to the RX UE.

[0510] Specific implementation method 1: When the base station to which the RX UE belongs configures first DRX configuration information for the RX UE, the RX UE sends DRX configuration request information (such as first information) to the base station to which the RX UE belongs to request to configure or reconfigure DRX configuration information for the base station.

[0511] The DRX configuration request information includes at least one of the following: a request reason indicating that the DRX configuration information does not match the resource configuration information, the first resource configuration information, identification information corresponding to the first resource configuration information, the expected DRX configuration information, and the DRX adjustment amount.

[0512] In the second method, the RX UE sends the second information to the TX UE;

[0513] Specific implementation method 2: RX UE sends mode switching request information (i.e., second information) to TX UE to request TXUE to switch the resource allocation mode of RX UE from the first mode to the second mode, and configure or reconfigure resources for the first communication device according to the second mode. For example, if RX UE is currently in mode2, then RX UE sends mode switching request information to TX UE, and TX UE responds to the mode switching request information, switches the resource allocation mode of RX UE from mode2 to mode1, and then, reallocates resources for RX UE according to mode1, and RX UE can receive the new resource configuration information sent by the base station.

[0514] Specific implementation method three: The RX UE sends resource configuration failure information to the TX UE to request the TX UE to configure or reconfigure resources for the RX UE;

[0515] Among them, the above-mentioned resource configuration failure information may include at least one of the following: fifth information used to indicate resource configuration failure, a configuration failure type used to indicate that the resource configuration information does not match the DRX configuration information, the first DRX configuration information (the first DRX configuration information may include partial DRX parameters such as the DRX activation period or include all DRX parameters), identification information corresponding to the first DRX configuration information, expected resource configuration information (which can be understood as recommended resource configuration information) or resource adjustment amount.

[0516] In the third case, the RX UE sends the first information to the base station to which it belongs, and also sends the second information to the TX UE;

[0517] Specific implementation method 4: RX UE sends resource configuration failure information to TXUE, and sends DRX configuration request information to the base station to which RX UE belongs. Optionally, the resource configuration failure information carries the expected resource configuration information and / or resource adjustment amount; the DRX configuration request information carries the expected DRX configuration information and / or DRX adjustment amount.

[0518] It should be noted that the identification information corresponding to the DRX configuration information in the above specific implementation manner may include at least one of the following: a target identification, a source identification, a side link connection identification, a source and target pair identification, a side link link identification, a logical channel identification, a resource pool identification, a side link service identification, a MAC PDU identification, and a TB identification. Exemplarily, the above source identification may be a source layer 1 identification (source L1 ID) or a source layer 2 identification (source L2 ID), and the above target identification may be a target layer 1 identification (source L1 ID) or a target layer 2 identification (source L2 ID).

[0519] In a ninth situation, the first communication device is an RX UE, the second communication device is a TX UE, and the third communication device is a network device (such as a base station) to which the RXUE belongs. Fig.25 This is a schematic diagram of the first scenario of resource configuration and DRX configuration in the embodiment of the present application, see Fig.25 As shown, the RX UE, TX UE or the base station to which the TX UE belongs configures the first DRX configuration information for the RX UE, and the base station to which the RX UE belongs configures the first resource configuration information for the RX UE. Among them, the first DRX configuration resource is used for the first side link between the RX UE and the TX UE, the first resource configuration information is used for the second side link between the RX UE as the TX UE and other UEs (i.e., the fourth communication device), and the first resource configuration information is used to instruct the RX UE to send side link data on the second side link, which can also be understood as the first resource configuration information is used for the RX UE (as the TX UE) to send side link data to other UEs (i.e., the fourth communication device).

[0520] It can be understood that in the ninth case, the RX UE can determine the first DRX configuration information by itself, then, after receiving the first resource configuration information from the base station to which the RX UE belongs through S2101, the RX UE executes S2102, and then executes S2104 when the first DRX configuration information does not match the first resource configuration information. At this time, exemplarily, the RX UE can send the second information to the base station to which the RX UE belongs or redetermine the DRX configuration information by itself. Alternatively, the TX UE or the base station to which the TX UE belongs can configure the first DRX configuration information for the RX UE, then, after receiving the first resource configuration information from the base station to which the RX UE belongs through S2101, the RX UE executes S2102, and then executes S2104 when the first DRX configuration information does not match the first resource configuration information. At this time, exemplarily, the RX UE can send the first information to the TX UE and / or send the second information to the base station to which the RX UE belongs.

[0521] In some possible implementations, the above S2104 may include but is not limited to the following specific implementations:

[0522] The first type: the RX UE sends the first information to the TX UE.

[0523] Specific implementation method 1: When the TX UE or the base station to which the TX UE belongs configures the first DRX configuration information for the RX UE, the RX UE sends DRX configuration request information (such as the first information) to the TX UE to request to configure or reconfigure the DRX configuration information for the TX UE or the base station to which the TX belongs.

[0524] Among them, the above-mentioned DRX configuration request information includes at least one of the following: a request reason for indicating that the DRX configuration information does not match the resource configuration information, the first resource configuration information, identification information corresponding to the first resource configuration information, the first DRX configuration information, and identification information corresponding to the first DRX configuration information.

[0525] The second method is that the RX UE sends the second information to the base station to which it belongs;

[0526] Specific implementation method 2: The RX UE sends resource configuration failure information (such as second information) to the base station to which it belongs, so as to request the base station to configure or reconfigure resources for the RX UE;

[0527] Among them, the above-mentioned resource configuration failure information may include at least one of the following: fifth information used to indicate resource configuration failure, a configuration failure type used to indicate that the resource configuration information does not match the DRX configuration information, the first DRX configuration information (the first DRX configuration information may include partial DRX parameters such as the DRX activation period or include all DRX parameters), identification information corresponding to the first DRX configuration information, expected resource configuration information (which can be understood as recommended resource configuration information) or resource adjustment amount.

[0528] In the third case, the RX UE sends the first information to the TX UE and also sends the second information to the base station to which it belongs;

[0529] Specific implementation method three: RX UE sends resource configuration failure information to its base station, and sends DRX configuration request information to TX UE. Optionally, the resource configuration failure information carries the expected resource configuration information and / or resource adjustment amount; the DRX configuration request information carries the expected DRX configuration information and / or DRX adjustment amount.

[0530] It should be noted that the identification information corresponding to the DRX configuration information in the above specific implementation manner may include at least one of the following: a target identification, a source identification, a side link connection identification, a source and target identification pair, a side link link identification, a logical channel identification, a resource pool identification, a side link service identification, a MAC PDU identification, and a TB identification. Exemplarily, the above source identification may be a source layer 1 identification (source L1 ID) or a source layer 2 identification (source L2 ID), and the above target identification may be a target layer 1 identification (source L1 ID) or a target layer 2 identification (source L2 ID).

[0531] The tenth situation is similar to the fifth situation above. The first communication device is a TX UE, the second communication device is a network device (such as a base station) to which the TXUE belongs, and the third communication device is a TX UE or a RX UE. Fig.26 This is a schematic diagram of the tenth scenario of resource configuration and DRX configuration in the embodiment of the present application, see Fig.26 As shown, the RX UE or the base station to which the RX UE belongs configures the first DRX configuration information for the RX UE, and the TX UE or the base station to which the TX UE belongs configures the first resource configuration information for the RX UE. The first resource configuration information is used to indicate one or more resource sets corresponding to the RX UE.

[0532] It can be understood that in the tenth case, the RX UE can determine the first DRX configuration information by itself, then the RX UE executes S2102 after receiving the first resource configuration information from the TX UE through S2101, and then executes S2104 when the first DRX configuration information does not match the first resource configuration information. At this time, exemplarily, the RX UE can send the second information to the TX UE or redetermine the DRX configuration information by itself. Alternatively, the base station to which the RX UE belongs can configure the first DRX configuration information for the RX UE, then the RX UE executes S2102 after receiving the first resource configuration information from the TX UE through S2101, and then executes S2104 when the first DRX configuration information does not match the first resource configuration information. At this time, exemplarily, the RX UE can send the first information to the base station to which the RX UE belongs and / or send the second information to the TX UE.

[0533] In some possible implementations, the above S2104 may include but is not limited to the following specific implementations:

[0534] The first type: the RX UE sends the first information to the base station to which it belongs.

[0535] Specific implementation method 1: When the base station to which the RX UE belongs configures the first DRX configuration information for the RX UE, the RX UE sends DRX configuration request information (such as first information) to the base station to request to configure or reconfigure the DRX configuration information for the RX UE.

[0536] Among them, the above-mentioned DRX configuration request information includes at least one of the following: a request reason for indicating that the DRX configuration information does not match the resource configuration information, the first resource configuration information, identification information corresponding to the first resource configuration information, the first DRX configuration information (the first DRX configuration information may include partial DRX parameters such as the DRX activation period or all DRX parameters) and identification information corresponding to the first DRX configuration information.

[0537] In the second method, the RX UE sends the second information to the TX UE;

[0538] Specific implementation method 2: RX UE sends mode switching request information (such as second information) to TX UE to request TXUE to switch the resource allocation mode of RX UE from the first mode to the second mode, and configure or reconfigure resources for the first communication device according to the second mode. For example, if RX UE is currently in mode2, then RX UE sends mode switching request information to TX UE, and TX UE responds to the mode switching request information, switches the resource allocation mode of RX UE from mode2 to mode1, and then reallocates resources for RX UE according to mode1, and RX UE can receive the new resource configuration information sent by the base station.

[0539] Specific implementation method three: The RX UE sends resource configuration failure information to the TX UE to request the TX UE to configure or reconfigure resources for the RX UE;

[0540] Among them, the above-mentioned resource configuration failure information may include at least one of the following: fourth information used to indicate resource configuration failure, a configuration failure type used to indicate that the resource configuration information does not match the DRX configuration information, the first DRX configuration information (the first DRX configuration information may include partial DRX parameters such as the DRX activation period or all DRX parameters), identification information corresponding to the first DRX configuration information, expected resource configuration information (which can be understood as recommended resource configuration information) or resource adjustment amount.

[0541] In the third case, the RX UE sends the first information to the base station to which it belongs, and also sends the second information to the TX UE;

[0542] Specific implementation method 4: RX UE sends resource configuration failure information to TX UE, and sends DRX configuration request information to its base station. Optionally, the resource configuration failure information carries the expected resource configuration information and / or resource adjustment amount; the DRX configuration request information carries the expected DRX configuration information and / or DRX adjustment amount.

[0543] It should be noted that the identification information corresponding to the DRX configuration information in the above specific implementation manner may include at least one of the following: a target identification, a source identification, a side link connection identification, a source and target identification pair, a side link link identification, a logical channel identification, a resource pool identification, a side link service identification, a MAC PDU identification, and a TB identification. Exemplarily, the above source identification may be a source layer 1 identification (source L1 ID) or a source layer 2 identification (source L2 ID), and the above target identification may be a target layer 1 identification (source L1 ID) or a target layer 2 identification (source L2 ID).

[0544] It can be seen from the above that when the first communication device determines that the first resource configuration information does not match the first DRX configuration information (i.e., SL resources and SL DRX), it sends the first information to the second communication device and / or sends the second information to the third communication device, so that the SL resources configured by the second communication device and / or the third communication device match the SL DRX.

[0545] Furthermore, when the first communication device determines that the SL resources do not match the SL DRX, the first communication device only needs to send the SL DRX configuration to the SL resource configuration subject (base station or UE), which can save the signaling overhead of the first communication device sending its related SL DRX to the SL resource configuration subject; when the first communication device determines that the SL resources do not match the SL DRX, the first communication device only needs to send the SL resource configuration to the SL DRX configuration subject (base station or UE), which can save the signaling overhead of the first communication device sending its related SL resource configuration to the SLDRX configuration subject.

[0546] Furthermore, when the UE determines that the SL resources do not match the SL DRX, it indicates the mismatched SL resource configuration / recommended SL DRX configuration to the SL DRX configuration body, or indicates the mismatched SL DRX configuration / recommended SL resource configuration to the SL resource configuration body, or indicates the recommended SL DRX configuration to the SL DRX configuration body and at the same time indicates the recommended SL resource configuration to the SL resource configuration body, so that the subsequently reconfigured SL resources match the SL DRX.

[0547] Based on the same inventive concept, an embodiment of the present application provides a communication device, which may be a chip or a system on chip in a first communication device, or a functional module in the first communication device for implementing the method described in any of the above embodiments. The chip or the system on chip includes a memory, and the memory stores instructions, and when the instructions are called by the system on chip or the chip, the above method is executed. Fig. 27 FIG. 1 is another structural diagram of a communication device in an embodiment of the present application, see Fig. 27 As shown, the communication device 2700 may include: a sending module 2701; and may also include a receiving module 2702 and / or a matching module 2703.

[0548] In some possible implementations, the sending module 2701 is configured to send first information to the second communication device and / or send second information to the third communication device if the first discontinuous reception DRX configuration information does not match the first resource configuration information.

[0549] Among them, the first DRX configuration information is used for the first side link corresponding to the first communication device, the first resource configuration information is used for the second side link corresponding to the first communication device, the first information is used to instruct the second communication device to perform DRX configuration for the first side link, and the second information is used to instruct the third communication device to perform resource configuration for the second side link.

[0550] In some possible implementations, the first side link may be one or more side links, and the second side link may also be one or more side links. It should be noted that when the first side link is one side link, the second side link and the first side link may be the same side link, or the second side link and the first side link may be different side links, and when the first side link is multiple side links, the second side link may be one or more of the first side links, that is, the second side link is part of the side links or all of the side links in the first side link.

[0551] In some possible implementations, since the DRX configuration information and the resource configuration information are configured by different entities, the DRX activation period indicated by the first DRX configuration information and the time area indicated by the first resource configuration information may conflict within one or more time periods. At this time, it can be said that the first DRX configuration information does not match the first resource configuration information.

[0552] Optionally, the above-mentioned “a time period” may refer to a time slot corresponding to a time domain interval that has occurred, or may refer to a time slot corresponding to a time domain interval that has not occurred.

[0553] Further, the DRX activation period indicated by the first DRX configuration information and the time domain interval indicated by the first resource configuration information conflict within a time period, including: the number of time slots overlapped by n DRX activation periods and the time domain interval is less than a preset threshold, where n is a positive integer. For example, the number of time slots overlapped by n DRX activation periods and the time domain interval is less than a preset threshold, including: the number of overlapping time slots divided by n times the number of time slots of the DRX activation period is less than a preset threshold.

[0554] In some possible implementations, the first resource configuration information is the current resource configuration information of the first communication device; the receiving module 2702 is used to receive the first DRX configuration information from the second communication device; the matching module 2703 is used to determine that the first DRX configuration information does not match the first resource configuration information.

[0555] In some possible implementations, the first communication device is a TX UE, the second communication device is a RX UE, and the third communication device is a network device to which the TX UE belongs; wherein the first resource configuration information can be used to indicate the resources configured by the base station for the TXUE in mode1, and can also be used to indicate the resource pool corresponding to the TX UE in mode2.

[0556] In some possible implementations, the first communication device is an RX UE, the second communication device is a TX UE, and the third communication device is a network device to which the RX UE belongs; wherein the first DRX configuration information is used for a first side link between the RX UE and the TX UE, and the first resource configuration information is used to indicate a receiving resource corresponding to the RX UE in mode2, and the receiving resource is used for the first side link.

[0557] In some possible implementations, the first communication device is a RX UE, the third communication device is a TX UE, and the second communication device is a network device to which the RX UE belongs; wherein the first resource configuration information includes resource configuration information for instructing the RX UE to perform perception.

[0558] Furthermore, the first communication device may be an auxiliary user device, the second communication device may be a network device to which the auxiliary user device belongs, and the third communication device may be an assisted user device; wherein the first resource configuration information includes resource configuration information for instructing the first communication device to perform perception.

[0559] In some possible implementations, the first communication device is an RX UE, the second communication device is a TX UE, and the third communication device is a network device to which the RX UE belongs; wherein, the first DRX configuration resource is used for a first side link between the RX UE and the TX UE, the first resource configuration information is used for a second side link between the RX UE as a TX UE and other RX UEs, and the first resource configuration information is used to instruct the RX UE to send side link data on the second side link. It can also be understood that the first resource configuration information is used for the RX UE (as a TX UE) to send side link data to other UEs.

[0560] In some possible implementations, the first communication device is an RX UE, the second communication device is a network device to which the RX UE belongs, and the third communication device is a TX UE; wherein the first DRX configuration resource is used for a first side link between the RX UE and the TX UE, and the first resource configuration information is used to indicate one or more resource sets corresponding to the RX UE.

[0561] Furthermore, the first communication device may be an assisted user device, the second communication device may be a network device to which the assisted user device belongs, and the third communication device may be an assisting user device; wherein, the first DRX configuration resource is used for the first side link between the RX UE and the TX UE, and the first resource configuration information is used to indicate one or more resource sets corresponding to the RX UE.

[0562] In some possible implementations, the sending module 2701 is specifically used to send mode switching request information to a third communication device, where the mode switching request information is used to request the third communication device to switch the resource allocation mode of the first communication device from the first mode to the second mode; or, to send resource configuration request information to the third communication device.

[0563] The resource configuration request information includes at least one of the following: a request reason indicating that the DRX configuration information does not match the resource configuration information, the first DRX configuration information, identification information corresponding to the first DRX configuration information, expected resource configuration information or resource adjustment amount.

[0564] In some possible implementations, the sending module 2701 is specifically configured to send DRX configuration failure information to the second communication device.

[0565] Among them, the DRX configuration failure information includes at least one of the following: third information used to indicate DRX configuration failure, identification information corresponding to the DRX configuration information, a configuration failure type used to indicate that the DRX configuration information does not match the resource configuration information, the effective duration of not allowing the second communication device to configure DRX for the first communication device, the first resource configuration information, the expected DRX configuration information, the DRX adjustment amount and the corresponding identification information.

[0566] In some possible implementations, the receiving module 2702 is further used to receive DRX configuration failure information sent by a third communication device; and the sending module 2701 is further used to send the DRX configuration failure information to the second communication device.

[0567] In some possible implementations, the above-mentioned device 2700 also includes a timer, which is used to start after the sending module 2701 sends resource configuration request information to the third communication device; the sending module 2701 is also used to send DRX configuration failure information to the second communication device when the timer times out and the receiving module 2702 does not receive the resource configuration information sent by the third communication device.

[0568] In some possible implementations, the DRX configuration failure information is further used to trigger the second communication device to send fourth information to the network device to which the second communication device belongs, where the fourth information is used to indicate that the DRX configuration corresponding to the first side link has failed.

[0569] It can be understood that the fourth information can be the above-mentioned DRX configuration failure information, that is, the RX UE forwards the DRX configuration failure information to the base station to which it belongs, or the fourth information can also include indication information generated by the RX UE based on the DRX configuration failure information to indicate that the DRX configuration corresponding to the first side link has failed.

[0570] Among them, the above-mentioned identification information may include at least one of the following: target identifier, source identifier, side link connection identifier, source and target identifier pair, side link link identifier, logical channel identifier, resource pool identifier, side link service identifier, media access control layer protocol data unit MAC PDU identifier, and transmission block TB identifier.

[0571] In some possible implementations, the sending module 2701 is further configured to send resource configuration request information to the third communication device, and send DRX configuration failure information to the second communication device.

[0572] In some possible implementations, the first DRX configuration information is the current DRX configuration information of the first communication device; the receiving module 2702 is also used to receive the first resource configuration information from the third communication device; the matching module 2703 is used to determine that the first DRX configuration information does not match the first resource configuration information.

[0573] In some possible implementations, the first communication device is a TX UE, the second communication device is a RX UE, and the third communication device is a network device to which the TX UE belongs; wherein the first resource configuration information can be used to indicate the resources configured by the base station for the TXUE in mode1, and can also be used to indicate the resource pool corresponding to the TX UE in mode2.

[0574] In some possible implementations, the first communication device is a RX UE, the second communication device is a network device to which the RX UE belongs, and the third communication device is a RX UE. The first resource configuration information is used to indicate the receiving resources corresponding to the TX UE in mode2.

[0575] In some possible implementations, the first communication device is a RX UE, the second communication device is a network device of the RX UE, and the third communication device is a TX UE; wherein the first resource configuration information includes resource configuration information for instructing the RX UE to perform perception.

[0576] Furthermore, the first communication device may be an assisted user device, the second communication device may be a network device to which the assisted user device belongs, and the third communication device may be an assisting user device; wherein the first resource configuration information includes resource configuration information for instructing the first communication device to perform perception.

[0577] In some possible implementations, the first communication device is an RX UE, the second communication device is a TX UE, and the third communication device is a network device to which the RX UE belongs; wherein the first resource configuration information is used for the RX UE to send side link data on the second side link between other UEs, and it can also be understood that the first resource configuration information is used for the RX UE (as a TX UE) to send side link data to other UEs.

[0578] In some possible implementations, the first communication device is an RX UE, the second communication device is a network device to which the RX UE belongs, and the third communication device is a TX UE; wherein the first resource configuration information is used to indicate one or more resource sets corresponding to the RX UE.

[0579] Further, the first communication device is an assisted user equipment, the second communication device is a network device to which the assisted user equipment belongs, and the third communication device is an assisting user equipment.

[0580] In some possible implementations, the sending module 2701 is further used to send a mode switching request message to a third communication device, where the mode switching request message is used to request the third communication device to switch the resource allocation mode of the first communication device from the first mode to the second mode and configure resources for the first communication device according to the second mode; or, to send resource configuration failure information to the third communication device, where the resource configuration failure information includes at least one of the following: fifth information for indicating a resource configuration failure, a configuration failure type for indicating that the resource configuration information does not match the DRX configuration information, the first DRX configuration information, identification information corresponding to the first DRX configuration information, expected resource configuration information, or a resource adjustment amount.

[0581] In some possible implementations, the sending module 2701 is further configured to send DRX configuration request information to the third communication device, wherein the DRX configuration request information includes at least one of the following: a request reason indicating that the DRX configuration information does not match the resource configuration information, the first resource configuration information, the desired DRX configuration, or the DRX adjustment amount.

[0582] In some possible implementations, the sending module 2701 is further configured for the first communication device to send resource configuration failure information to the second communication device, and to send DRX configuration request information to the third communication device.

[0583] Based on the same inventive concept, still refer to Fig.13 As shown, when the processor 1301 in the first communication device executes the executable code or application stored in the memory 1302, the method steps on the first communication device side in the above embodiment can be executed. The specific execution process refers to the above embodiment and will not be repeated here.

[0584] In addition, the memory 1302 stores computer-executable instructions for implementing the functions of the sending module, receiving module, and matching module. The functions / implementation processes of the sending module, receiving module, and matching module can be realized by Fig.13The processor 1301 in the memory 1302 calls the computer execution instructions stored in the memory 1302 to implement it. For specific implementation processes and functions, please refer to the above-mentioned related embodiments.

[0585] Based on the same inventive concept, an embodiment of the present application provides a computer-readable storage medium, which stores instructions. When the instructions are executed on a computer, they are used to execute the communication method described in one or more embodiments.

[0586] Based on the same inventive concept, an embodiment of the present application provides a computer program or a computer program product. When the computer program or the computer program product is executed on a computer, the computer implements the communication method described in one or more embodiments.

[0587] Those skilled in the art will appreciate that the functions described in conjunction with the various illustrative logic blocks, modules, and algorithm steps disclosed herein can be implemented in hardware, software, firmware, or any combination thereof. If implemented in software, the functions described in the various illustrative logic blocks, modules, and steps can be stored or transmitted as one or more instructions or codes on a computer-readable medium and executed by a hardware-based processing unit. Computer-readable media may include computer-readable storage media, which corresponds to tangible media, such as data storage media, or includes any communication media that facilitates the transfer of computer programs from one place to another (e.g., according to a communication protocol). In this manner, computer-readable media may generally correspond to (1) non-temporary tangible computer-readable storage media, or (2) communication media, such as signals or carrier waves. Data storage media may be any available media that can be accessed by one or more computers or one or more processors to retrieve instructions, codes, and / or data structures for implementing the techniques described in this application. A computer program product may include computer-readable media.

[0588] As an example and not limitation, such computer-readable storage media may include RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage, flash memory, or any other medium that can be used to store the desired program code in the form of instructions or data structures and can be accessed by a computer. Also, any connection is properly referred to as a computer-readable medium. For example, if instructions are transmitted from a website, server or other remote source using a coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technologies such as infrared, radio and microwave, then the coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio and microwave are included in the definition of media. However, it should be understood that the computer-readable storage media and data storage media do not include connections, carrier waves, signals or other temporary media, but are actually directed to non-temporary tangible storage media. As used herein, disks and optical disks include compact disks (CDs), laser optical disks, optical optical disks, digital versatile disks (DVDs), and Blu-ray disks, where disks typically reproduce data magnetically, while optical disks reproduce data optically using lasers. Combinations of the above should also be included within the scope of computer-readable media.

[0589] Instructions may be executed by one or more processors, such as one or more digital signal processors (DSPs), general purpose microprocessors, application specific integrated circuits (ASICs), field programmable logic arrays (FPGAs), or other equivalent integrated or discrete logic circuits. Thus, the term "processor" as used herein may refer to any of the aforementioned structures or any other structures suitable for implementing the techniques described herein. Additionally, in some aspects, the functions described by the various illustrative logic blocks, modules, and steps described herein may be provided within dedicated hardware and / or software modules configured for encoding and decoding, or incorporated in a combined codec. Moreover, the techniques may be fully implemented in one or more circuits or logic elements.

[0590] The techniques of the present application may be implemented in a variety of devices or apparatuses, including a wireless handset, an integrated circuit (IC), or a set of ICs (e.g., a chipset). Various components, modules, or units are described in this application to emphasize functional aspects of devices for performing the disclosed techniques, but do not necessarily need to be implemented by different hardware units. In fact, as described above, the various units may be combined in a codec hardware unit in conjunction with appropriate software and / or firmware, or provided by interoperating hardware units (including one or more processors as described above).

[0591] In the above embodiments, the description of each embodiment has different emphases. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0592] The above is only an exemplary embodiment of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A communication method, characterized in that: include: The communication device determines a fourth resource; The communication device excludes resources from the fourth resource and determines a third candidate resource, where the third candidate resource satisfies: There is an intersection in the time domain with the first activation period corresponding to the communication target; The third candidate resource is used to determine a fifth resource, the fifth resource is used for side link transmission of the communication device, and the fifth resource is a resource included in the first activation period in the time domain.

2. The method according to claim 1, characterized in that The existence of an intersection with the first activation period corresponding to the communication target in the time domain includes: being entirely or partially within the time range of the first activation period in the time domain.

3. The method according to claim 1 or 2, characterized in that: The communication device includes a transmitting end user equipment TXUE or a chip in the transmitting end user equipment TX UE, and the communication target includes a receiving end user equipment RX UE or a chip in the receiving end user equipment RX UE.

4. The method according to any one of claims 1 to 3, characterized in that: The first activation period corresponding to the communication target includes a discontinuous reception DRX activation period corresponding to the communication target.

5. The method according to claim 1, characterized in that The method further comprises: If there is no intersection between the third candidate resource and the first activation period corresponding to the communication target, the communication device triggers resource reselection.

6. The method according to any one of claims 1 to 5, characterized in that: The fourth resource includes a resource of a selection window.

7. The method according to claim 1, characterized in that The method also includes: before the communication device starts side link transmission using the fifth resource, selecting a communication target identifier from multiple communication target identifiers whose corresponding DRX activation period intersects with the fifth resource in the time domain.

8. The method according to claim 1 or 7, characterized in that: The method further comprises: If the fifth resource does not have an intersection with the discontinuous reception DRX activation period corresponding to the fourth service of the communication device, the communication device triggers resource reselection.

9. The method according to claim 8, characterized in that The DRX activation periods corresponding to the fifth resource and the fourth service do not have an intersection, including: The fifth resource and the union of multiple DRX activation periods corresponding to the fourth service do not have an intersection; or, The fifth resource has no intersection with at least one of the multiple DRX activation periods corresponding to the fourth service; or, There is no intersection between the DRX activation periods that meet a preset number among the multiple DRX activation periods corresponding to the fifth resource and the fourth service.

10. The method according to claim 8 or 9, characterized in that: The DRX activation period corresponding to the fourth service includes at least one of the following: the DRX activation period corresponding to the communication target, the DRX activation period corresponding to the side link connection, the DRX activation period corresponding to the source and target pair, the DRX activation period corresponding to the side link link, the DRX activation period corresponding to the logical channel, the DRX activation period corresponding to the resource pool, the DRX activation period corresponding to the side link service, the DRX activation period corresponding to the media access control layer protocol data unit MAC PDU, and the DRX activation period corresponding to the transport block TB.

11. The method according to any one of claims 8 to 10, characterized in that: The communication device determines the fifth resource from the third candidate resource, comprising: The communication device configures a period corresponding to the fifth resource, where the period corresponding to the fifth resource includes a DRX period that satisfies a second condition in the DRX configuration corresponding to the fourth service; The second condition includes at least one of the following: a minimum value of a DRX cycle in the DRX configuration corresponding to the fourth service, a DRX cycle in the DRX configuration corresponding to the fourth service is less than a preset threshold, or a DRX cycle in the DRX configuration corresponding to the fourth service is less than 20%.

12. The method according to any one of claims 8 to 11, characterized in that The fourth service includes at least one communication object.

13. The method according to any one of claims 1 to 12, characterized in that: in, The method further comprises: The media access control MAC layer of the communication device indicates a first activation period corresponding to the communication target to the physical layer.

14. A communication device, characterized in that: include: Processor and memory; The processor is coupled to the memory, and is configured to read and execute instructions in the memory to implement the communication method according to any one of claims 1 to 13.

15. A communication system, characterized in that: include: The communication device as claimed in claim 14.

16. A computer-readable storage medium having a computer program or instruction stored thereon, characterized in that: When the computer program or instructions are executed, the computer is caused to perform the communication method according to any one of claims 1 to 13.

17. A computer program product, comprising instructions, characterized in that: When the instructions are executed, the computer is caused to execute the communication method according to any one of claims 1 to 13.

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