WO2024067186A1 - 一种通信方法及装置 - Google Patents

一种通信方法及装置 Download PDF

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Publication number
WO2024067186A1
WO2024067186A1 PCT/CN2023/119294 CN2023119294W WO2024067186A1 WO 2024067186 A1 WO2024067186 A1 WO 2024067186A1 CN 2023119294 W CN2023119294 W CN 2023119294W WO 2024067186 A1 WO2024067186 A1 WO 2024067186A1
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WIPO (PCT)
Prior art keywords
sidelink
carrier
mac
configuration
carriers
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PCT/CN2023/119294
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English (en)
French (fr)
Inventor
邝奕如
徐海博
才宇
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华为技术有限公司
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Publication of WO2024067186A1 publication Critical patent/WO2024067186A1/zh

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
    • H04B7/0621—Feedback content
    • H04B7/0626—Channel coefficients, e.g. channel state information [CSI]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H04W72/231—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal the control data signalling from the layers above the physical layer, e.g. RRC or MAC-CE signalling

Definitions

  • the present application relates to the field of communication technology, and in particular to a communication method and device.
  • SL sidelink
  • V2X vehicle-to-everything
  • the motivation for increasing the SL data rate is to share sensor information (such as video, etc.) between vehicles with a high degree of driving automation.
  • sensor information such as video, etc.
  • one way to increase the SL data rate is to enable the user equipment (UE) to support SL carrier aggregation (CA), thereby achieving a higher data rate, but the mechanism for communication between UEs through multiple SL carriers has not yet been discussed.
  • An embodiment of the present application provides a communication method and apparatus for providing a mechanism for UEs to communicate via multiple SL carriers.
  • a first communication method is provided, which can be executed by a terminal device, or by other devices including terminal device functions, or by a chip system (or, chip) or other functional module, which can realize the functions of the terminal device, and the chip system or functional module is, for example, set in the terminal device.
  • the terminal device is, for example, a first terminal device.
  • the method includes: receiving first configuration information from an access network device, the first configuration information including an association relationship between a sidelink carrier and a scheduling request (SR) configuration; if a sidelink channel state information (CSI) reporting of a first sidelink carrier is triggered, and there is no sidelink resource for sending a first sidelink MAC CE on the first sidelink carrier, a first SR is sent to the access network device, the first SR is used to request a sidelink resource, and the first sidelink MAC CE is used to indicate a sidelink CSI report of the first sidelink carrier.
  • the first SR corresponds to the SR configuration associated with the first sidelink carrier.
  • the first configuration information configures the association relationship between the first sidelink carrier and the first SR configuration, then the first SR may correspond to the first SR configuration; or, the first SR corresponds to a pre-configured SR configuration.
  • sidelink resource allocation mode 1 is a resource allocation mode in which an access network device allocates SL resources to a UE.
  • the SR configuration may be associated with a sidelink carrier, so when the first terminal device applies for sidelink resources, it may apply for sidelink resources on the sidelink carrier through an SR corresponding to the SR configuration associated with the corresponding sidelink carrier, so that the access network device may allocate resources on a suitable sidelink carrier to the first terminal device, thereby enabling the first terminal device to apply for sidelink resources in the case of multiple sidelink carriers.
  • the first terminal device sends a sidelink MAC CE to the second terminal device on the sidelink resource of the first sidelink carrier, it can indicate that the sidelink CSI report included in the sidelink MAC CE is the sidelink CSI report of the first sidelink carrier, so that the second terminal device can clearly know which sidelink carrier's sidelink CSI report is received, without confusing sidelink CSI reports of different sidelink carriers.
  • this method does not need to add additional indication information in the sidelink MAC CE to indicate the sidelink carrier corresponding to the sidelink CSI report, which can save signaling overhead.
  • the method further includes: receiving information indicating a first sidelink resource from the access network device, the first sidelink resource being a resource on the first sidelink carrier; and sending the first sidelink MAC CE to the second terminal device via the first sidelink resource.
  • the access network device can determine, based on the SR configuration corresponding to the first SR, that the first SR is used to request SL resources on the first SL carrier (or to request SL resources on multiple SL carriers including the first SL carrier), then the access network device can allocate the first SL carrier to the first terminal device.
  • the first terminal device allocates SL resources on the access network device (or allocates SL resources on multiple SL carriers including the first SL carrier), so that the first terminal device can obtain the SL resources allocated by the access network device.
  • the sidelink carrier included in the first configuration information is all or part of the sidelink carrier configured by the first terminal device; or, the sidelink carrier included in the first configuration information is all or part of the sidelink carrier that the first terminal device can use to send sidelink CSI reports; or, the sidelink carrier included in the first configuration information is all or part of the sidelink carrier of the first terminal device that is enabled with the CSI acquisition function.
  • the first terminal device can be configured with one or more SL carriers, and the first configuration information can be the association relationship between all or part of the configurations of these SL carriers and the SR configuration.
  • some SL carriers cannot be used to send SL CSI reports for the time being, but may be configured to be able to send SL CSI reports in the future.
  • the association relationship between these SL carriers and SR configurations is uniformly configured through the first configuration information, and these association relationships can be directly applied when these SL carriers can be used to send SL CSI reports without additional configuration.
  • the first configuration information may configure the association relationship between all or part of these SL carriers and the SR configuration, while for SL carriers that cannot be used to send SL CSI reports, it is not necessary to configure their association relationship with the SR configuration, which is beneficial to saving the overhead of the first configuration information.
  • the first configuration information also includes the pre-configured SR configuration, and the pre-configured SR configuration is used to request side link resources on the side link carrier that is not associated with the SR configuration.
  • the first configuration information does not configure the association relationship between these SL carriers and the SR configuration.
  • the first configuration information may also include a pre-configured SR configuration, and the pre-configured SR configuration may be applicable to SL carriers that are not associated with the SR configuration.
  • the pre-configured SR configuration the number of association relationships can be reduced, and each SL carrier of the first UE can be allocated SL resources.
  • there are no sidelink resources on the first sidelink carrier for sending the first sidelink MAC CE including: there are no sidelink resources on the first sidelink carrier for sending the first sidelink MAC CE plus the sub-header of the first sidelink MAC CE, and the sidelink resources are sidelink resources for new transmission.
  • the association relationship between the sidelink carrier and the SR configuration includes an association relationship between the sidelink carrier and an SR configuration identifier, and the SR configuration identifier indicates the SR configuration.
  • the first configuration information can configure the association relationship between the SL carrier and the SR configuration by configuring the association relationship between the SL carrier and the SR configuration identifier, without having to include a specific SR configuration in the first configuration information (for example, the specific SR configuration can be predefined by the protocol, or the access network device and the first terminal device can both pre-store the SR configuration), which can reduce the overhead of the first configuration information.
  • the first sidelink MAC CE is a sidelink CSI report MAC CE.
  • the first SL MAC CE is used to include (or indicate) a SL CSI report, and the SL MAC CE may be a SL CSI report MAC CE, or may be other SL MAC CEs.
  • a second communication method which can be executed by an access network device, or by other devices including the functions of an access network device, or by a chip system (or, chip) or other functional module, which can realize the functions of the access network device, and the chip system or functional module is, for example, set in the access network device.
  • the method includes: sending first configuration information to a first terminal device, the first configuration information including an association relationship between a sidelink carrier and an SR configuration; receiving a first SR from the first terminal device, the first SR being used to request a sidelink resource, wherein the first SR corresponds to an SR configuration associated with a first sidelink carrier, or the first SR corresponds to a pre-configured SR configuration.
  • the method further includes: sending information indicating a first sidelink resource to the first terminal device, where the first sidelink resource is a resource on the first sidelink carrier.
  • the sidelink carrier included in the first configuration information is all or part of the sidelink carrier configured for the first terminal device; or, the sidelink carrier included in the first configuration information is all or part of the sidelink carrier that the first terminal device can use to send a sidelink CSI report; or, the sidelink carrier included in the first configuration information is all or part of the sidelink carrier of the first terminal device that is enabled with a CSI acquisition function.
  • the first configuration information further includes the pre-configured SR configuration, where the pre-configured SR configuration is used to request a sidelink resource on a sidelink carrier that is not associated with the SR configuration.
  • the association relationship between the sidelink carrier and the SR configuration includes an association relationship between the sidelink carrier and a SR configuration identifier, and the SR configuration identifier indicates the SR configuration.
  • the first sidelink MAC CE is a sidelink CSI report MAC CE.
  • a third communication method is provided, which can be executed by a terminal device, or by other devices including terminal device functions, or by a chip system (or, chip) or other functional modules, which can realize the functions of the terminal device, and the chip system or functional module is, for example, arranged in the terminal device.
  • the terminal device is, for example, a first terminal device.
  • the method includes: sending a sidelink MAC CE to a second terminal device, wherein the sidelink MAC CE is used to indicate a sidelink CSI report of a first sidelink carrier, wherein the sidelink MAC CE includes N bits, wherein the N bits are used to indicate the first sidelink carrier, or the N bits are not used to indicate any sidelink carrier, and N is a positive integer.
  • the transmission of the SL CSI report may not consider carrier constraints, for example, one SL MAC CE may indicate SL CSI reports of multiple SL carriers, thereby saving transmission overhead.
  • the N bits included in the SL MAC CE can also indicate the SL carrier corresponding to the information indicated by the SL MAC CE, so that the second terminal device can clearly identify the carrier corresponding to the information indicated by the SL MAC CE, thereby improving the accuracy of information transmission.
  • the N bits are used to indicate the first sidelink carrier, or, if the first terminal device has only one sidelink carrier configured with a sidelink CSI reference signal, the N bits are not used to indicate any sidelink carrier; or, if the first terminal device has more than one sidelink carrier enabled with a CSI acquisition function, the N bits are used to indicate the first sidelink carrier, or, if the first terminal device has only one sidelink carrier enabled with a CSI acquisition function, the N bits are not used to indicate any sidelink carrier; or, if the first terminal device is configured with more than one sidelink carrier, the N bits are used to indicate the first sidelink carrier, or, if the first terminal device is configured with one sidelink carrier, the N bits are not used to indicate any sidelink carrier.
  • the N bits included in the SL MAC CE may have different meanings, for example, they may indicate the SL carrier corresponding to the SL MAC CE, or they may be used as reserved bits (wherein, when the N bits are still used as reserved bits, they are not used to indicate any sidelink carrier).
  • the meaning of the N bits may be determined in the above manner, for example, the first terminal device and the second terminal device may be determined in the same manner, so that the first terminal device and the second terminal device may reach a consensus on the understanding of the N bits.
  • the N bits may have different meanings, which also makes the implementation of the SL MAC CE more flexible.
  • the sidelink MAC CE is a sidelink CSI report MAC CE.
  • a fourth communication method is provided, which can be executed by a terminal device, or by other devices including terminal device functions, or by a chip system (or, chip) or other functional modules, which can realize the functions of the terminal device, and the chip system or functional module is, for example, arranged in the terminal device.
  • the terminal device is, for example, a first terminal device.
  • the method comprises: when a sidelink CSI report of a first sidelink carrier is triggered, a first sidelink MAC CE is sent on a first sidelink resource of the first sidelink carrier, wherein the first sidelink MAC CE is used to indicate the sidelink CSI report of the first sidelink carrier; and the triggered sidelink CSI report of the first sidelink carrier is canceled.
  • the first terminal device can maintain the SL CSI reporting status for different SL carriers respectively, so that the SL CSI reporting status of different SL carriers will not affect each other, which helps to improve transmission efficiency and accuracy.
  • the method further includes: not canceling the sidelink CSI reports of other sidelink carriers, wherein the CSI reports of the other sidelink carriers have also been triggered. If, in addition to the SL CSI report of the first SL carrier being triggered, the SL CSI reports of other SL carriers are also triggered, then after the first SL MAC CE is sent, the first terminal device can cancel the triggered SL CSI report of the first SL carrier, but does not cancel the triggered SL CSI reports of other SL carriers, thereby not affecting the sending of the SL CSI reports of other SL carriers.
  • the method further includes: canceling the triggered SR of the first sidelink carrier, or canceling the triggered SR corresponding to the sidelink CSI report of the first sidelink carrier, or canceling the triggered SR corresponding to the first sidelink MAC CE.
  • the first terminal device can maintain SR, or maintain SR status, for different SL carriers (or, SL CSI reports of different SL carriers; or, different SL MAC CEs).
  • the first terminal device can also cancel the SR of the triggered first SL carrier.
  • the first terminal device may not cancel the SR of other sidelink carriers, wherein the SR of the other sidelink carriers has also been triggered, that is, the first UE can keep the SR of other SL carriers unchanged, so as not to affect the transmission process of other SL carriers.
  • the first UE may uniformly maintain one SR. Then, after the first SL CSI MAC CE is sent, if, in addition to the first If the SL CSI report of the SL carrier is triggered but no SL CSI report of other SL carriers is triggered, or if the first SL MAC CE indicates the SL CSI reports of all triggered SL carriers, the first terminal device may cancel the triggered SR.
  • the first terminal device may not cancel the triggered SR, so that the SL CSI reports of each SL carrier can be sent normally.
  • the method further includes: receiving an SCI, the SCI being used to schedule a sidelink CSI report of the first sidelink carrier; and triggering a sidelink CSI report of the first sidelink carrier.
  • the second terminal device may send an SCI to the first terminal device to schedule an SL CSI report of the first SL carrier.
  • the first terminal device may trigger an SL CSI report of the first SL carrier.
  • the first sidelink MAC CE is a sidelink CSI report MAC CE.
  • a fifth communication method is provided, which can be executed by a terminal device, or by other devices including terminal device functions, or by a chip system (or, chip) or other functional module, which can realize the functions of the terminal device, and the chip system or functional module is, for example, arranged in the terminal device.
  • the terminal device is, for example, a first terminal device.
  • the method includes: when a sidelink CSI report is triggered, a sidelink MAC CE is sent on a first sidelink resource, and the sidelink MAC CE is used to indicate a sidelink CSI report of at least one sidelink carrier; if the sidelink MAC CE indicates the sidelink CSI reports of all sidelink carriers to be sent, the triggered sidelink CSI report is canceled.
  • the first terminal device can uniformly maintain a SL CSI report, thereby reducing the number of SL CSI reports maintained by the first terminal device and simplifying the implementation of the first terminal device.
  • the method further includes: if the sidelink MAC CE indicates the sidelink CSI reports of all the triggered sidelink carriers, canceling the triggered SR.
  • the first terminal device can uniformly maintain one SR, thereby reducing the number of SRs maintained by the first terminal device and simplifying the implementation of the first terminal device.
  • the method further includes: if the sidelink MAC CE indicates a triggered sidelink CSI report of some sidelink carriers, not cancelling the triggered sidelink CSI report and not cancelling the triggered SR. Since the first terminal device uniformly maintains a CSI report and an SR, if there is still an SL CSI report of an SL carrier that has not been sent or has not been sent, the first terminal device may not cancel the triggered SL CSI report or the triggered SR, thereby ensuring that the SL CSI reports of each SL carrier can be sent.
  • the sidelink MAC CE is a sidelink CSI report MAC CE.
  • a sixth communication method which can be executed by a terminal device, or by other devices including terminal device functions, or by a chip system (or, chip) or other functional modules, which can realize the functions of the terminal device, and the chip system or functional module is, for example, set in the terminal device.
  • the terminal device is, for example, a first terminal device.
  • the method includes: if the sidelink resource used to send the sidelink MAC CE cannot carry the sidelink CSI reports of all the sidelink carriers to be sent, determine the sidelink CSI reports of some sidelink carriers from the sidelink CSI reports of all the sidelink carriers; send the sidelink MAC CE to the second terminal device, and the sidelink MAC CE is used to indicate the sidelink CSI reports of the part of the sidelink carriers.
  • the first UE can determine the SL CSI reports of some SL carriers in a variety of ways, so that the SL CSI reports of these part of the SL carriers can be sent to reduce the transmission delay of the SL CSI report.
  • the sidelink CSI reports of the some sidelink carriers satisfy one or more of the following conditions: the priority of the some sidelink carriers is higher than or equal to the priority of the remaining sidelink carriers in all the sidelink carriers except the some sidelink carriers; or, the channel quality change amount corresponding to the sidelink CSI reports of the some sidelink carriers is greater than or equal to the channel quality change amount corresponding to the sidelink CSI reports of the remaining sidelink carriers in the sidelink CSI reports of all the sidelink carriers except the sidelink CSI reports of the some sidelink carriers, wherein the channel quality change amount corresponding to the sidelink CSI report of a sidelink carrier is calculated based on the difference between the current sidelink CSI report of the sidelink carrier and the last sidelink CSI report.
  • the channel quality corresponding to the sidelink CSI report of the part of the sidelink carriers is better than or equal to the channel quality of the sidelink CSI reports of the remaining sidelink carriers in the sidelink CSI reports of all the sidelink carriers except the sidelink CSI report of the part of the sidelink carriers; or the channel quality information index corresponding to the sidelink CSI report of the part of the sidelink carriers is greater than or equal to the channel quality information index corresponding to the sidelink CSI report of the remaining sidelink carriers in the sidelink CSI reports of all the sidelink carriers except the sidelink CSI report of the part of the sidelink carriers; or the remaining effective duration of the reporting delay corresponding to the sidelink CSI report of the part of the sidelink carriers is less than or equal to the sidelink CSI report of the whole sidelink carriers.
  • the embodiments of the present application provide a variety of methods for selecting a partial SL CSI report, and any two or more of the above methods can also be combined for application, which is more flexible.
  • the sidelink resources used to send the sidelink MAC CE are unable to carry the sidelink CSI reports of all the sidelink carriers to be sent, including: the sidelink MAC CE of all the sidelink carriers to be sent that the sidelink resources are unable to carry plus the sub-header of the sidelink MAC CE.
  • the sidelink MAC CE is a sidelink CSI report MAC CE.
  • a communication device may be the first terminal device described in any one of the first to sixth aspects.
  • the communication device has the function of the first terminal device.
  • the communication device is, for example, a first terminal device, or a larger device including the first terminal device, or a functional module in the first terminal device, such as a baseband device or a chip system.
  • the communication device includes a baseband device and a radio frequency device.
  • the communication device includes a processing unit (sometimes also referred to as a processing module) and a transceiver unit (sometimes also referred to as a transceiver module).
  • the transceiver unit can implement a sending function and a receiving function.
  • the transceiver unit When the transceiver unit implements the sending function, it can be called a sending unit (sometimes also referred to as a sending module), and when the transceiver unit implements the receiving function, it can be called a receiving unit (sometimes also referred to as a receiving module).
  • the sending unit and the receiving unit can be the same functional module, which is called a transceiver unit, and the functional module can implement the sending function and the receiving function; or, the sending unit and the receiving unit can be different functional modules, and the transceiver unit is a general term for these functional modules.
  • the transceiver unit (or, the receiving unit) is used to receive first configuration information from an access network device, the first configuration information including an association relationship between a sidelink carrier and an SR configuration; the processing unit is used to determine that a sidelink CSI report of a first sidelink carrier is triggered and there are no sidelink resources for sending a first sidelink MAC CE on the first sidelink carrier; the transceiver unit (or, the sending unit) is used to send a first SR to the access network device, the first SR being used to request a sidelink resource, wherein the first sidelink MAC CE is used to indicate a sidelink CSI report of the first sidelink carrier, the first SR corresponding to an SR configuration associated with the first sidelink carrier, or the first SR corresponding to a pre-configured SR configuration.
  • the transceiver unit (or, the sending unit) is used to send a sidelink MAC CE to a second terminal device
  • the sidelink MAC CE is used to indicate a sidelink CSI report of a first sidelink carrier
  • the sidelink MAC CE includes N bits, the N bits are used to indicate the first sidelink carrier, or the N bits are not used to indicate any sidelink carrier, and N is a positive integer.
  • the transceiver unit (or the sending unit) is used to send a first sidelink MAC CE on a first sidelink resource of the first sidelink carrier when a sidelink CSI report of the first sidelink carrier is triggered, and the first sidelink MAC CE is used to indicate the sidelink CSI report of the first sidelink carrier; the processing unit is used to cancel the triggered sidelink CSI report of the first sidelink carrier.
  • the transceiver unit (or the sending unit) is used to send a sidelink MAC CE on a first sidelink resource when a sidelink CSI report is triggered, and the sidelink MAC CE is used to indicate a sidelink CSI report of at least one sidelink carrier; and the processing unit is used to cancel the triggered sidelink CSI report if the sidelink MAC CE indicates the sidelink CSI reports of all sidelink carriers to be sent.
  • the processing unit is used to determine the sidelink CSI reports of some sidelink carriers from the sidelink CSI reports of all the sidelink carriers if the sidelink resources used for sending the sidelink MAC CE cannot carry the sidelink CSI reports of all the sidelink carriers to be sent; the transceiver unit (or the sending unit) is used to send the sidelink MAC CE to the second terminal device, and the sidelink MAC CE is used to indicate the sidelink CSI reports of the some sidelink carriers.
  • the communication device also includes a storage unit (sometimes also referred to as a storage module), and the processing unit is used to couple with the storage unit and execute the program or instructions in the storage unit, so that the communication device can perform the function of the first terminal device described in any one of the first to sixth aspects above.
  • a storage unit sometimes also referred to as a storage module
  • a communication device may be the one described in any one of the first to sixth aspects.
  • Access network equipment The communication device has the functions of the above-mentioned access network equipment.
  • the communication device is, for example, an access network device, or a larger device including an access network device, or a functional module in the access network device, such as a baseband device or a chip system.
  • the communication device includes a baseband device and a radio frequency device.
  • the communication device includes a processing unit (sometimes also called a processing module) and a transceiver unit (sometimes also called a transceiver module).
  • a processing unit sometimes also called a processing module
  • transceiver unit sometimes also called a transceiver module
  • the transceiver unit (or, the sending unit) is used to send first configuration information to a first terminal device, the first configuration information including an association relationship between a sidelink carrier and a scheduling request SR configuration; the transceiver unit (or, the receiving unit) is used to receive a first SR from the first terminal device, the first SR being used to request a sidelink resource, wherein the first SR corresponds to an SR configuration associated with a first sidelink carrier, or the first SR corresponds to a pre-configured SR configuration.
  • the communication device also includes a storage unit (sometimes also referred to as a storage module), and the processing unit is used to couple with the storage unit and execute the program or instructions in the storage unit, so that the communication device can perform the functions of the access network device described in any one of the first to sixth aspects above.
  • a storage unit sometimes also referred to as a storage module
  • a communication system comprising a first terminal device and an access network device, wherein the first terminal device is used to execute the method performed by the first terminal device as described in any one of the first to sixth aspects, and the access network device is used to execute the method performed by the access network device as described in any one of the first to sixth aspects.
  • a computer-readable storage medium is provided, wherein the computer-readable storage medium is used to store a computer program or instruction, and when the computer-readable storage medium is executed, the method executed by the first terminal device or access network device in the above aspects is implemented.
  • a computer program product comprising instructions, which, when executed on a computer, enables the methods described in the above aspects to be implemented.
  • a chip system comprising a processor and an interface, wherein the processor is used to call and execute instructions from the interface so that the chip system implements the above-mentioned methods.
  • FIG1 is a schematic diagram of a network architecture used in an embodiment of the present application.
  • FIG2 is a flow chart of a first communication method provided in an embodiment of the present application.
  • FIG3 is a flow chart of a second communication method provided in an embodiment of the present application.
  • FIG4 is a flow chart of a third communication method provided in an embodiment of the present application.
  • FIG5A and FIG5B are schematic diagrams of two implementation methods of SL MAC CE provided in an embodiment of the present application.
  • FIG6 is a flow chart of a fourth communication method provided in an embodiment of the present application.
  • FIG7 is a flow chart of a fifth communication method provided in an embodiment of the present application.
  • FIG8 is a schematic diagram of a device provided in an embodiment of the present application.
  • FIG. 9 is a schematic diagram of another device provided in an embodiment of the present application.
  • the number of nouns means “singular noun or plural noun", that is, “one or more”.
  • At least one means one or more
  • plural means two or more.
  • “And/or” describes the association relationship of associated objects, indicating that three relationships may exist.
  • a and/or B can mean: A exists alone, A and B exist at the same time, and B exists alone, where A and B can be singular or plural.
  • the character "/” generally indicates that the previous and next associated objects are in an “or” relationship.
  • A/B means: A or B.
  • “At least one of the following" or similar expressions refers to any combination of these items, including any combination of single or plural items.
  • At least one of a, b, or c means: a, b, c, a and b, a and c, b and c, or a and b and c, where a, b, c can be single or multiple.
  • S201 may occur before S202, or may occur after S202, or may also occur at the same time as S202.
  • the terminal device is a device with wireless transceiver function, which can be a fixed device, a mobile device, a handheld device (such as a mobile phone), a wearable device, a vehicle-mounted device, or a wireless device built into the above device (for example, a communication module, a modem, or a chip system, etc.).
  • the terminal device is used to connect people, objects, machines, etc., and can be widely used in various scenarios, such as but not limited to the following scenarios: cellular communication, device-to-device communication (device-to-device, D2D), V2X, machine-to-machine/machine-type communication
  • the terminal device is a terminal device for scenarios such as machine-to-machine/machine-type communications, M2M/MTC), Internet of Things (IoT), virtual reality (VR), augmented reality (AR), industrial control (industrial control), self-driving, remote medical, smart grid, smart furniture, smart office, smart wear, smart transportation, smart city, drones, robots, etc.
  • the terminal device may sometimes be referred to as UE, terminal, access station, UE station, remote station, wireless communication equipment, or user device, etc.
  • the terminal device is described by taking UE as an example in the embodiments of the present application.
  • the network equipment in the embodiments of the present application includes access network equipment, and/or core network equipment.
  • the access network equipment is a device with wireless transceiver function, which is used to communicate with the terminal device.
  • the access network equipment includes but is not limited to base stations (base transceiver station (BTS), Node B, eNodeB/eNB, or gNodeB/gNB), transmission reception points (TRP), base stations of subsequent evolution of the third generation partnership project (3GPP), access nodes in wireless fidelity (Wi-Fi) systems, wireless relay nodes, wireless backhaul nodes, etc.
  • the base station can be: a macro base station, a micro base station, a pico base station, a small station, a relay station, etc.
  • the base station can include one or more co-station or non-co-station transmission and receiving points.
  • the access network device may also be a wireless controller, a centralized unit (CU), and/or a distributed unit (DU) in a cloud radio access network (CRAN) scenario.
  • the access network device may also be a server, etc.
  • the network device in the vehicle to everything (V2X) technology may be a road side unit (RSU).
  • the base station can communicate with a terminal device, or it can communicate with the terminal device through a relay station.
  • the terminal device can communicate with multiple base stations in different access technologies.
  • the core network device is used to implement functions such as mobility management, data processing, session management, policy and billing.
  • functions such as mobility management, data processing, session management, policy and billing.
  • the names of the devices that implement the core network functions in systems with different access technologies may be different, and the embodiments of the present application do not limit this.
  • the core network equipment includes: access and mobility management function (AMF), session management function (SMF), policy control function (PCF) or user plane function (UPF), etc.
  • AMF access and mobility management function
  • SMF session management function
  • PCF policy control function
  • UPF user plane function
  • the communication device for realizing the function of the network device may be a network device, or may be a device capable of supporting the network device to realize the function, such as a chip system, which may be installed in the network device.
  • the technical solution provided in the embodiment of the present application is described by taking the device for realizing the function of the network device as an example that the network device is used as the device.
  • SL CA means that on the SL, UEs can communicate with each other through more than one SL carrier.
  • a UE can use more than one SL carrier to send broadcast or multicast messages, or a UE can use more than one SL carrier to perform unicast communication with another UE.
  • Different data can be sent on different SL carriers, thereby increasing the data rate on the SL.
  • the data rate refers to the data transmission rate, which can also be referred to as the data rate.
  • the technical solution provided in the embodiments of the present application can be applied to the 4th generation (4G) system, such as the long term evolution (LTE) system, or can be applied to the 5G system, such as the NR system, or can also be applied to the next generation mobile communication system or other similar communication systems, such as the 6th generation (4G) system, etc., without specific limitation.
  • the technical solution provided in the embodiments of the present application can be applied to the device-to-device (D2D) scenario, such as the NR-D2D scenario, etc., or can be applied to the vehicle-to-everything (V2X) scenario, such as the NR-V2X scenario, etc.
  • D2D device-to-device
  • V2X vehicle-to-everything
  • it can be applied to the Internet of Vehicles, such as V2X, etc., or can be used in the fields of intelligent driving, assisted driving, or intelligent networked vehicles.
  • Figure 1 is a communication network architecture applicable to an embodiment of the present application.
  • Figure 1 includes a first UE and a second UE, and the first UE and the second UE can communicate through multiple SL carriers.
  • the first UE can send a SL CSI report of the SL carrier to the second UE.
  • the second UE can send an indication to the first UE to instruct the first UE to send the SL CSI report of the SL carrier.
  • Figure 1 also includes an access network device.
  • mode 1 sidelink resource allocation mode 1
  • the first UE can apply for SL resources from the access network device.
  • Sidelink resource allocation mode 1 is a resource allocation mode in which the access network device allocates SL resources to the UE.
  • Figure 1 does not show the communication situation between the second UE and the access network device.
  • the second UE and the access network device can communicate, for example, the second UE is also within the coverage of the access network device; or the second UE and the access network device may not be able to communicate, for example, the second UE is within the coverage of the access network device. Out of coverage.
  • the data of different SL carriers can be mapped to different logical channels (logical channel, LCH), and thus sent through different SL carriers.
  • LCH logical channel
  • control signaling on the SL such as the SL medium access control control element (sidelink medium access control control element, SL MAC CE), how to transmit it in a multi-SL carrier scenario, the embodiments of the present application provide the following two methods.
  • the transmission of SL MAC CE needs to consider the SL carrier constraint.
  • the SL MAC CE carries the information of which SL carrier, and the SL MAC CE is transmitted on the SL carrier.
  • the MAC CE used to include the SL CSI report is the SL-CSI reporting MAC CE (also known as the Sidelink CSI Reporting MAC CE). If a SL-CSI reporting MAC CE includes (or indicates) the SL CSI report of SL carrier X, then the SL-CSI reporting MAC CE can be sent on SL carrier X, and SL carrier X is one of the one or more SL carriers between UEs.
  • the SL-CSI-reporting MAC CE For the receiving UE, if the SL-CSI-reporting MAC CE is received on SL carrier X, it can be determined that the SL CSI report included (or indicated) by the SL-CSI reporting MAC CE is the SL CSI report of SL carrier X. Among them, if there are SL CSI reports of multiple SL carriers to be sent, they can be sent separately through multiple SL-CSI reporting MAC CEs, one of which may include (or indicate) the SL CSI report of one SL carrier.
  • SL MAC CE does not consider the SL carrier constraint.
  • SL MAC CE can be transmitted on any SL carrier.
  • SL MAC CE may include SL carrier information to indicate which SL carrier or carriers the SL MAC CE carries information about.
  • SL-CSI reporting MAC CE includes (or indicates) the SL CSI report of SL carrier X. The SL-CSI reporting MAC CE may be sent on any SL carrier.
  • the SL-CSI reporting MAC CE may include SL carrier information (e.g., including an index of the SL carrier; or including a bitmap, the bits included in the bitmap correspond one-to-one to the SL carriers between the transmitting UE and the receiving UE, and the corresponding SL carrier can be indicated by the value of the bits included in the bitmap) to indicate that the SL-CSI reporting MAC CE carries the SL CSI report of SL carrier X, and SL carrier X is one of the one or more SL carriers between UEs.
  • SL carrier information e.g., including an index of the SL carrier; or including a bitmap, the bits included in the bitmap correspond one-to-one to the SL carriers between the transmitting UE and the receiving UE, and the corresponding SL carrier can be indicated by the value of the bits included in the bitmap
  • the methods provided by the various embodiments of the present application are introduced below in conjunction with the accompanying drawings. Unless otherwise specified in the following text, the steps represented by dotted lines in the accompanying drawings corresponding to the various embodiments of the present application are all optional steps.
  • the methods provided by the various embodiments of the present application can be applied to the network architecture shown in Figure 1.
  • the first UE involved in the methods provided by the various embodiments of the present application can be the first UE in Figure 1
  • the second UE involved in the methods provided by the various embodiments of the present application can be the second UE in Figure 1
  • the access network device involved in the methods provided by the various embodiments of the present application can be the access network device in Figure 1.
  • the first communication method provided by the embodiment of the present application is introduced. Please refer to Figure 2, which is a flow chart of the method. Among them, the first communication method can be applied to the transmission mode 1 of SL MAC CE as introduced above.
  • An access network device sends first configuration information to a first UE.
  • the first UE receives the first configuration information from the access network device.
  • the first configuration information is included in a radio resource control (RRC) reconfiguration message, or the first configuration information is an RRC reconfiguration message.
  • RRC radio resource control
  • the first configuration information may include an association relationship between the SL carrier and the SR configuration.
  • the SR configuration included (or indicated) in the first configuration information may be associated with the SL MAC CE, for example, the SL resources requested by the SR corresponding to the SR configuration may be used to send the SL MAC CE; or, the SR configuration included (or indicated) in the first configuration information may be associated with the SL CSI report, for example, the SL resources requested by the SR corresponding to the SR configuration may be used to send the SL CSI report, and the SL CSI report may be sent via the SL MAC CE.
  • the SL MAC CE used to send the SL CSI report may be the SL-CSI reporting MAC CE.
  • the first configuration information may include at least one group of association relationships, wherein one group of association relationships is an association relationship between at least one SL carrier and an SR configuration, and different groups of association relationships correspond to different SL carriers.
  • each group of association relationships in at least one group of association relationships may include an association relationship between a SL carrier and an SR configuration. If the first UE sends an SR corresponding to the SR configuration included in one group of association relationships to the access network device, the access network device can determine the SL carrier uniquely corresponding to the SR, so that the access network device can schedule SL resources on the SL carrier for the first UE without scheduling SL resources on too many SL carriers, thereby reducing the waste of SL resources.
  • each group of associations in at least one group of associations may include associations between multiple SL carriers and one SR configuration, and the number of SL carriers included in different groups of associations may be the same or different.
  • multiple SL carriers may correspond to one SR configuration, thereby saving SR configurations.
  • At least one group of association relationships includes a group of association relationships A and a group of association relationships B, where association relationship A may include an association relationship between an SL carrier and an SR configuration, and association relationship B may include an association relationship between multiple SL carriers and an SR configuration.
  • association relationship A may include an association relationship between an SL carrier and an SR configuration
  • association relationship B may include an association relationship between multiple SL carriers and an SR configuration.
  • An SR configuration can indicate the time domain resources and/or frequency domain resources of the SR.
  • the SR configuration can also indicate one or more of the duration of the SR prohibition timer and the maximum number of SR transmission times. That is to say, the first UE can determine and send the SR in the time domain resources and/or frequency domain resources of the corresponding SR according to an SR configuration. Different SR configurations correspond to different SR time domain resources and/or frequency domain resources.
  • the embodiment of the present application establishes an association relationship between the SL carrier and the SR configuration. If the first UE wants to request SL resources on a certain SL carrier from the access network device, the first UE can use the SR configuration corresponding to the SL carrier to send the SR to the access network device. After receiving the SR, the access network device can allocate SL resources on the corresponding SL carrier to the first UE.
  • a set of association relationships is an association relationship between at least one SL carrier and an SR configuration. If the number of at least one SL carrier is greater than or equal to 2, then if the first UE sends the SR corresponding to the SR configuration to the access network device, the access network device can allocate SL resources on each SL carrier of at least one SL carrier for the first UE, that is, the access network device can allocate multiple SL resources to the first UE. At this time, the UE may only send an SL CSI report on one of the SL carriers, and the SL resources on other SL carriers allocated by the access network device may be ignored.
  • this method can save SR configurations and ensure that the first UE can obtain SL resources for sending SL CSI reports. Moreover, compared with the situation where the access network device allocates SL resources on all SL carriers of the first UE, this method can also save SL resources to a certain extent.
  • the first configuration information includes an association relationship between a SL carrier and an SR configuration.
  • One way is that the first configuration information includes an association relationship between a SL carrier and an SR configuration identifier, or another way is that the first configuration information includes an association relationship between a SL carrier index and an SR configuration identifier.
  • one SL carrier corresponds to one SL carrier index
  • one SL carrier index indicates one SL carrier.
  • One SR configuration corresponds to one SR configuration identifier
  • one SR configuration identifier indicates one SR configuration.
  • Table 1 is an example of multiple groups of association relationships.
  • Table 1 includes 4 groups of association relationships, of which SL carrier 1 and SL carrier 2 both correspond to SR configuration a, which is regarded as one group of association relationships, and the remaining 3 rows are 3 groups of association relationships.
  • the at least one group of association relationships configured by the first configuration information may include, for example, one or more groups of association relationships in Table 1, or may not include the association relationships in Table 1.
  • the first configuration information includes the association relationship between the SL carrier and the SR configuration.
  • the first configuration information may include the SL carrier index.
  • the SR configuration is known to the first UE, and the first UE and the access network device also know the arrangement order of multiple SR configurations, then the order of the SL carrier index in the first configuration information corresponds one-to-one to the order of the SR configuration, which is equivalent to implicitly indicating the association relationship between the SL carrier index and the SR configuration identifier according to the order of the SL carrier index.
  • the order of the SR configuration is SR configuration a, SR configuration b, SR configuration c, SR configuration d
  • the order of the SL carrier index included in the first configuration information is SL index 1, SL index 3, SL index 2, SL index 4, then the first UE can clearly understand that SL carrier 1 is associated with SR configuration a, SL carrier 2 is associated with SR configuration c, SL carrier 3 is associated with SR configuration b, and SL carrier 4 is associated with SR configuration d.
  • the first configuration information includes the SR configuration
  • the SR configuration information contains the SL carrier index, indicating the SL carrier associated with the SR configuration.
  • SR configuration a contains SL index 1
  • SR configuration b contains SL index 3
  • SR configuration c contains SL index 2
  • SR configuration d contains SL index 4.
  • the first configuration information includes the association relationship between the SL carrier and the SR configuration.
  • the first configuration information may include an SR configuration identifier, and the order of the SR configuration identifier in the first configuration information corresponds one-to-one to the order of the SL carrier index, which is equivalent to implicitly indicating the association relationship between the SL carrier index and the SR configuration identifier according to the order of the SR configuration identifier.
  • the SL carrier index is, for example, determined in advance by negotiation between the first UE and the access network device, or it may be a default order, such as the order of the index value from small to large or from large to small.
  • the order of the SL carrier index is SL carrier index 1, SL carrier index 2, SL carrier index 3, SL carrier index 4, the first The order of SR configuration identifiers included in the configuration information is SR configuration a, SR configuration c, SR configuration b, and SR configuration d, so the first UE can clearly identify that SL carrier 1 is associated with SR configuration a, SL carrier 2 is associated with SR configuration c, SL carrier 3 is associated with SR configuration b, and SL carrier 4 is associated with SR configuration d.
  • the first configuration information includes SL configuration
  • the SR configuration information includes SL carrier configuration, indicating the SR configuration associated with the SL carrier configuration.
  • SL carrier configuration 1 of SL carrier 1 contains SR configuration identifier a
  • SL carrier configuration 2 of SL carrier 2 contains SR configuration identifier c
  • SL carrier configuration 3 of SL carrier 3 contains SR configuration identifier b
  • SL carrier configuration 4 of SL carrier 4 contains SR configuration identifier d
  • the first configuration information may include (or indicate) at least one SL carrier (for example, the first configuration information may include a SL carrier index).
  • the SL carriers included in the first configuration information may be all SL carriers configured for the first UE, or some SL carriers configured for the first UE.
  • the access network device or the second UE may pre-configure SL carriers for the first UE, and the first configuration information may include all or some of these SL carriers.
  • the information used to configure the SL carrier for the first UE and the first configuration information may be the same information, or the two information may be included in the same message, for example, included in the same RRC reconfiguration message; alternatively, the information used to configure the SL carrier for the first UE and the first configuration information may be different information, or the two information may be included in different messages.
  • the SL carriers included in the first configuration information may be all SL carriers that the first UE can use to send SL CSI reports, or some SL carriers that the first UE can use to send SL CSI reports. Among the SL carriers configured for the first UE, all may be used to send SL CSI reports, or only some may be used to send SL CSI reports, while the remaining parts cannot be used to send SL CSI reports.
  • the first configuration information configures the association between the SL carrier and the SR configuration, and the SL resources requested by the SR corresponding to the SR configuration can be used to send the SL CSI report. Therefore, the SL carrier included in the first configuration information may be a SL carrier that can be used to send the SL CSI report, so that the first configuration information can take effect.
  • the SL carriers included in the first configuration information may be all SL carriers on which the CSI acquisition function is enabled for the first UE, or some SL carriers on which the CSI acquisition function is enabled for the first UE. If a SL carrier is enabled with the CSI acquisition function, it indicates that the SL carrier can be used to send SL CSI reports. Conversely, if a SL carrier is not enabled with the CSI acquisition function, it indicates that the SL carrier cannot be used to send SL CSI reports.
  • the SL carriers on which the CSI acquisition function is enabled for the first UE may be all SL carriers or some SL carriers configured for the first UE.
  • the access network device may send second configuration information to the first UE, and the second configuration information may indicate which SL carriers are enabled with the CSI acquisition function.
  • the second configuration information may include the index of the SL carrier with the CSI acquisition function enabled; or, the second configuration information may include the index of all SL carriers configured by the first UE.
  • the second configuration information may also include indication information corresponding to the SL carrier index of the SL carrier, and the indication information may indicate that the CSI acquisition function is enabled.
  • the first UE can determine that the SL carriers corresponding to these SL carrier indexes have the CSI acquisition function enabled according to which SL carrier indexes have the corresponding indication information; or, the second configuration information may include a bitmap, and the bits included in the bitmap correspond one-to-one to all SL carriers configured by the first UE.
  • the second configuration information may include SL carrier configuration information, and the SL carrier configuration information corresponding to each SL carrier includes indication information on whether the CSI acquisition function is enabled.
  • the first UE can determine which SL carriers have the CSI acquisition function enabled according to the SL configuration information corresponding to the SL carriers.
  • the second configuration information may be included in an RRC reconfiguration message, or the second configuration information may be an RRC reconfiguration message.
  • the second configuration information and the first configuration information may be the same configuration information, or may be included in the same message, for example, included in the same RRC reconfiguration message; or, the first configuration information and the second configuration information may also be different configuration information, or may be included in different messages.
  • the first configuration information may also include a pre-configured SR configuration, which may also be called a default SR configuration or a common SR configuration, etc., without any restrictions on the name.
  • the pre-configured SR configuration may also be predefined by the protocol, and the first configuration information may not necessarily include the pre-configured SR configuration.
  • the pre-configured SR configuration may be applicable to SL carriers that are not associated with SR configurations.
  • the first UE is configured with SL carriers 1 to SL carriers 4, of which SL carriers 1 to SL carriers 3 can all be used to send SL CSI reports.
  • the first configuration information configures the association relationship between SL carrier 1 and SR configuration a, and configures the association relationship between SL carrier 2 and SR configuration b, but for SL carrier 3, the first configuration information does not configure the association relationship between SL carrier 3 and the SR configuration, then it can be considered that SL carrier 3 is associated with the pre-configured SR configuration.
  • the pre-configured SR configuration may be configured by an access network device, for example, the first configuration information may include the pre-configured SR configuration; Alternatively, the pre-configured SR configuration may be pre-defined by the protocol and does not need to be configured by the access network device. If the first UE wants to apply to the access network device for SL resources on SL carrier 3, it can send the SR corresponding to the pre-configured SR configuration to the access network device, and the access network device can allocate SL resources on SL carrier 3 to the first UE based on the SR. Through the pre-configured SR configuration, the number of association relationships can be reduced, and each SL carrier of the first UE can be allocated SL resources.
  • the first UE sends a first SR to the access network device.
  • the access network device receives the first SR from the first UE.
  • the first SL MAC CE may include the SL CSI report of the first SL carrier.
  • the first SL MAC CE is, for example, a SL-CSI reporting MAC CE.
  • the first SR may be used to request SL resources.
  • there are no SL resources for sending SL MAC CE on a SL carrier which can be understood as there are no SL resources for sending the SL MAC CE plus a subheader of the SL MAC CE on the SL carrier, and the SL resources are SL resources for new transmission; or it can be understood as there are no SL resources for sending the SL MAC CE plus a subheader of the SL MAC CE on the SL carrier for new transmission.
  • SL resources for sending the first SL MAC CE on the first SL carrier which can be understood as there are no SL resources for sending the first SL MAC CE plus a subheader of the first SL MAC CE on the first SL carrier, and the SL resources are SL resources for new transmission; or it can be understood as there are no SL resources for sending the first SL MAC CE plus a subheader of the first SL MAC CE on the first SL carrier for new transmission.
  • the first UE may separately maintain SL CSI reports, or maintain SL CSI reporting status, for different SL carriers (or, SL CSI reports of different SL carriers; or, different SL MAC CEs).
  • other UEs e.g., the second UE
  • SCI sidelink control information
  • the first UE may deem that the SL CSI reporting (SL CSI reporting) of the SL carrier is triggered, or the SL CSI reporting status of the SL carrier may be set to a triggered state.
  • the first UE may send the SL CSI report of the SL carrier on the SL carrier, that is, send the SL MAC CE including the SL CSI report.
  • the first UE can cancel the triggered SL CSI report of the SL carrier, or set the SL CSI report status of the SL carrier to a cancel trigger status.
  • the first UE can use the SL resources to send the SL MAC CE; or, after the SL CSI report of a SL carrier is triggered, if there are no SL resources that can be used to send the SL MAC CE (for example, there are no SL resources on the SL carrier that can be used to send the SL MAC CE), the first UE can trigger SR.
  • the first UE can maintain SR, or maintain SR status, for different SL carriers (or, SL CSI reports of different SL carriers; or, different SL MAC CEs). If the first UE wants to request SL resources on a certain SL carrier, it can trigger the SR corresponding to the SL carrier, or set the SR status corresponding to the SL carrier to a triggered state.
  • the first UE wants to request to send the SL resources of the SL CSI report (or the SL MAC CE including the SL CSI report) of a certain SL carrier, the SR corresponding to the SL CSI report of the SL carrier may be triggered, or the SR state corresponding to the SL CSI report (or the SL MAC CE including the SL CSI report) of the SL carrier may be set to the triggered state.
  • the first UE may cancel the triggered SL CSI report of the SL carrier.
  • the first UE may also cancel the triggered SR of the SL carrier, or set the SR state of the SL carrier to the canceled trigger state, or the first UE may also cancel the triggered SR corresponding to the SL CSI report (or the SL MAC CE including the SL CSI report) of the SL carrier, or set the SR state corresponding to the SL CSI report (or the SL MAC CE including the SL CSI report) of the SL carrier to the canceled trigger state.
  • the first UE may uniformly maintain an SR, or maintain an SR state, which may correspond to all SL carriers configured by the first UE, or to all carriers on which the first UE is enabled with the CSI acquisition function, or to all carriers that the first UE can use to send SL CSI reports.
  • the first UE may maintain the triggered state of the SR, or if the SR has not been triggered (or the SR state has not been set to a triggered state, or the SR state is a canceled trigger state), the first UE may trigger the SR, or set the SR state to a triggered state.
  • the first UE can cancel the triggered SR or set the SR state to a canceled trigger state in addition to canceling the CSI report of the corresponding carrier. If the SL CSI reports of the SL carriers to be sent have not been sent, the first UE will maintain the triggered state of the SR.
  • the first UE when the SL CSI report of the first SL carrier is triggered, if there is no SL resource for sending the first SL MAC CE on the first SL carrier, the first UE can trigger the SL CSI report of the first SL carrier (or the first SL carrier; or, The first UE may send a first SR to the access network device after triggering the corresponding SR.
  • the first SR may be the SR corresponding to the SR configuration associated with the first SL carrier, and the access network device can determine that the first UE is requesting SL resources on the first SL carrier based on the first SR.
  • the first configuration information configures the association relationship between the at least one SL carrier and the SR configuration, and the first SL carrier is one of the at least one SL carrier
  • the first SR may be the SR corresponding to the SR configuration associated with the at least one SL carrier, and the access network device can determine that the first UE is requesting SL resources on the at least one SL carrier based on the first SR.
  • the first SR may be the SR corresponding to the pre-configured SR configuration, and the access network device can determine that the first UE is requesting SL resources on a SL carrier that has no association relationship with the SR configuration based on the first SL, and the first SL carrier is, for example, one of the SL carriers that has no association relationship with the SR configuration.
  • the method of the embodiment of the present application may further include S203 and S204.
  • the access network device sends information indicating a first SL resource to the first UE.
  • the first UE receives the information from the access network device.
  • the first SL resource is, for example, a SL resource on a first SL carrier.
  • the access network device can determine, based on the first SR, that the first UE is requesting SL resources on the first SL carrier, and thus the access network device can allocate the first SL resources to the first UE.
  • the first SR is the SR corresponding to the SR configuration associated with at least one SL carrier.
  • the access network device can determine based on the first SR that the first UE is requesting SL resources on the at least one SL carrier. Therefore, the access network device can allocate at least one SL resource to the first UE.
  • the at least one SL resource corresponds to the at least one SL carrier one-to-one. For example, if the at least one SL carrier includes SL carrier 1 and SL carrier 2, the access network device can allocate SL resources on SL carrier 1 to the UE, as well as SL resources on SL carrier 2. In this case, the access network device can send information indicating at least one SL resource to the first UE.
  • the first SL resource is, for example, one SL resource among the at least one SL resources.
  • the first SL resource is, for example, an SL resource on the first SL carrier.
  • the first SR is the SR corresponding to the pre-configured SR configuration
  • the access network device can determine, based on the first SL, that the first UE is requesting SL resources on a SL carrier that has no association with the SR configuration. For example, there is at least one SL carrier that has no association with the SR configuration, and the first SL carrier is one of the at least one SL carriers.
  • the access network device can then allocate at least one SL resource to the first UE, and at least one SL resource corresponds one-to-one to the at least one SL carrier.
  • at least one SL carrier includes SL carrier 3 and SL carrier 4.
  • the access network device can allocate SL resources on SL carrier 3 to the UE, as well as SL resources on SL carrier 4.
  • the access network device can send information indicating at least one SL resource to the first UE, and the first SL resource is, for example, one of the at least one SL resources, and the first SL resource is, for example, an SL resource on the first SL carrier.
  • the first UE sends a first SL MAC CE to the second UE through the first SL resource.
  • the second UE receives the first SL MAC CE from the first UE through the first SL resource.
  • the first UE can send the first SL MAC CE to the second UE through the first SL resource.
  • the access network device allocates at least one SL resource to the first UE, and the first SL resource is one of the SL resources, the first UE can use the first SL resource to send the first SL MAC CE to the second UE, and the first UE can ignore other SL resources allocated by the access network device.
  • the second UE For the second UE, if the first SL MAC CE is received on the first SL resource, since the first SL resource is the SL resource on the first SL carrier, the second UE can determine that the SL CSI report included (or indicated) by the first SL MAC CE is the SL CSI report of the first SL carrier.
  • an association relationship can be configured for the SR configuration and the SL carrier configuration. Therefore, when the first UE applies for SL resources on a certain SL carrier, it can apply for resources on the SL carrier through the SR corresponding to the SR configuration associated with the SL carrier, so that the access network device can allocate SL resources on the appropriate SL carrier to the first UE, so that the SL CSI reports on each SL carrier can be sent, which can reduce the waste of SL resources and the transmission delay of the SL CSI report.
  • the first UE sends an SL MAC CE to the second UE on the SL resources of the first SL carrier, it can indicate that the SL CSI report included in the SL MAC CE is the SL CSI report of the first SL, so that the second UE can clearly know which SL carrier's SL CSI report is received, without confusing the SL CSI reports of different SL carriers. And this method does not need to add additional indication information in the SL MAC CE to indicate the SL carrier corresponding to the SL CSI report, which can save signaling overhead.
  • the second communication method provided by the embodiment of the present application is introduced below. Please refer to Figure 3, which is a flow chart of the method. Among them, the second communication method can be applied to the transmission mode 1 of SL MAC CE as introduced above.
  • S301 SL CSI reporting of a first SL carrier is triggered, and a first UE sends a first SL MAC CE to a second UE on a first SL resource of the first SL carrier.
  • the second UE receives a first SL MAC CE from the first UE on the first SL resource.
  • SL MAC CE may include (or indicate) a SL CSI report of a first SL carrier.
  • the first SL MAC CE is, for example, a SL-CSI reporting MAC CE.
  • the first UE can maintain SL CSI reports, or maintain SL CSI report status, for different SL carriers (or, SL CSI reports of different SL carriers; or, different SL MAC CEs). If other UEs (such as the second UE) send an SCI to the first UE, and the SCI is used to trigger the SL CSI report of a certain SL carrier, or the SCL is used to instruct the first UE to send an SL CSI report of a certain SL carrier, then the first UE can consider that the SL CSI report of the SL carrier is triggered, or the SL CSI report status of the SL carrier can be set to a triggered state.
  • other UEs such as the second UE
  • the first UE can consider that the SL CSI report of the first SL carrier is triggered. After triggering the SL CSI report of a SL carrier, the first UE can send the SL CSI report of the SL carrier on the SL carrier.
  • the first UE can use the SL resources to send the first SL MAC CE, for example, the SL resources are the first SL resources.
  • the first UE can trigger SR.
  • the first UE can maintain SR, or maintain SR status, for different SL carriers (or, SL CSI reports of different SL carriers; or, different SL MAC CEs). If the first UE wants to request SL resources on a certain SL carrier, it can trigger the SR corresponding to the SL carrier, or set the SR status corresponding to the SL carrier to a triggered state.
  • the first UE wants to request SL resources on the first SL carrier, it can trigger the SR corresponding to the first SL carrier, or set the SR status corresponding to the first SL carrier to a triggered state.
  • the first UE wants to request SL resources for sending the SL CSI report of the first SL carrier, it can trigger the SR corresponding to the SL CSI report of the first SL carrier, or set the SR status corresponding to the SL CSI report of the first SL carrier to a triggered state.
  • the first UE may uniformly maintain an SR, or maintain an SR state, which may correspond to all SL carriers configured by the first UE, or to all carriers on which the CSI acquisition function is enabled for the first UE, or to all carriers that the first UE can use to send SL CSI reports. If the first UE wants to request SL resources on any one or more SL carriers, then if the SR has been triggered (or the SR state has been set to a triggered state), the first UE may maintain the triggered state of the SR, or if the SR has not been triggered (or the SR state has not been set to a triggered state), the first UE may trigger the SR, or set the SR state to a triggered state.
  • the first UE can send an SR to the access network device.
  • the first UE can send an SR corresponding to the SR configuration associated with the first SL carrier to the access network device; or, if at least one SL carrier is associated with the same SR configuration and the first SL carrier is one of the at least one SL carrier, the first UE can send an SR corresponding to the SR configuration associated with the at least one SL carrier to the access network device; or, if the first SL carrier is not associated with the SR configuration, the first UE can send an SR corresponding to the pre-configured SR configuration to the access network device.
  • the access network device can allocate to the first UE an SL resource on the SL carrier associated with the SR configuration corresponding to the SR. For example, if the SR configuration is uniquely associated with the first SL carrier, the access network device can allocate an SL resource on the first SL carrier to the first UE, for example, a first SL resource is allocated; or, if the SR configuration is associated with at least one SL carrier, the access network device can allocate at least one SL resource to the first UE, the at least one SL resource belongs to at least one SL carrier, and the first SL resource is an SL resource belonging to the first SL carrier among the at least one SL resource.
  • the introduction of the embodiment shown in FIG2 please refer to the introduction of the embodiment shown in FIG2 .
  • the first UE After the first UE obtains the first SL resource, it can use the first SL resource to send the first SL MAC CE to the second UE.
  • the first UE cancels the SL CSI report of the triggered first SL carrier.
  • the first UE can cancel the triggered SL CSI report of the first SL carrier, or set the SL CSI report status of the first SL carrier to the cancel trigger state.
  • the first UE can keep the SL CSI reports of other SL carriers unchanged, or in other words, keep the SL CSI report status of other SL carriers unchanged.
  • the first UE can cancel the triggered SL CSI report of the first SL carrier, but not cancel the triggered SL CSI reports of other SL carriers, so as not to affect the sending of SL CSI reports of other SL carriers.
  • the first UE can cancel the SR of the triggered SL carrier in addition to canceling the SL CSI report of the triggered first SL carrier, or maintain the SR status of the SL carrier.
  • the state is set to the cancel trigger state.
  • the first UE can keep the SR of other SL carriers unchanged, or in other words, keep the SR state of other SL carriers unchanged.
  • the first UE can cancel the triggered SR of the first SL carrier, but does not cancel the triggered SR of other SL carriers, so as not to affect the sending of SRs of other SL carriers.
  • the first UE can cancel the SR corresponding to the SL CSI report of the triggered first SL carrier, but does not cancel the SR corresponding to the SL CSI report of other SL carriers, so as not to affect the sending of SRs corresponding to the SL CSI reports of other SL carriers.
  • the first UE can cancel the triggered SR in addition to canceling the CSI report of the corresponding carrier, or set the SR state to a canceled trigger state. If there are SL CSI reports of SL carriers to be sent that have not yet been sent, the first UE will maintain the triggered state of the SR. For example, after the first SL MAC CE is sent, if no SL CSI reports of other SL carriers are triggered except the SL CSI report of the first SL carrier, the first UE can cancel the triggered SR.
  • the first UE does not cancel the triggered SR.
  • the first SL MAC CE includes (or indicates) SL CSI reports of all triggered SL carriers, the first UE may cancel the triggered SR after the first SL MAC CE is sent. Otherwise, if the first SL MAC CE includes (or indicates) SL CSI reports of some triggered SL carriers, and SL CSI reports of the remaining SL carriers have not been sent, the first UE does not cancel the triggered SR after the first SL MAC CE is sent.
  • the technical solution provided in the embodiment of the present application provides a way for UE to maintain SL CSI reporting status and SR status. Even in the scenario of multiple SL carriers, the UE can correctly maintain the SL CSI reporting status and SR status, so that the transmission between different SL carriers will not interfere with each other, which helps to improve transmission efficiency and accuracy.
  • the third communication method provided by the embodiment of the present application is introduced below. Please refer to Figure 4, which is a flow chart of the method. Among them, the third communication method can be applied to the transmission mode 2 of SL MAC CE as introduced above.
  • the first UE sends a SL MAC CE to the second UE.
  • the second UE receives the SL MAC CE from the first UE.
  • the SL MAC CE may include (or indicate) information of the first SL carrier, for example, the information of the first SL carrier is the SL CSI report of the first SL carrier, or may be other information of the first carrier. Taking the information of the first SL carrier as the SL CSI report of the first SL carrier as an example, optionally, the SL MAC CE is, for example, a SL-CSI reporting MAC CE.
  • the SL MAC CE is transmitted without considering the SL carrier constraint, so the SL MAC CE can be transmitted on any SL carrier.
  • the SL MAC CE may include N bits, where N is a positive integer.
  • these N bits can be implemented in different ways.
  • one implementation of these N bits is that these N bits can indicate the SL carrier corresponding to the information included in the SL MAC CE, for example, the value of these N bits can indicate the index of the SL carrier corresponding to the information included in the SL MAC CE.
  • the embodiment of the present application may not change the format of the SL MAC CE.
  • the existing SL MAC CE includes 8 bits, 3 of which are reserved bits, then N can be less than or equal to 3, which is equivalent to using the reserved bits in the SL MAC CE to indicate the SL carrier corresponding to the information included in the SL MAC CE.
  • These three bits are originally reserved bits in the SL MAC CE, which is equivalent to the format of the SL MAC CE shown in FIG. 5B .
  • the format of the SL MAC CE has not changed, but the meaning of the original reserved bits has been redefined.
  • the value of the three bits is "001", that is, these three bits indicate that the SL carrier index is "1”, indicating that the SL MAC CE includes the information of SL carrier 1.
  • N bits are reserved bits, and in this case, the N bits do not indicate any SL carrier.
  • N can be equal to 3, that is, the format of the SL MAC CE does not need to be changed.
  • FIG. 5A which is an example of an implementation of the SL MAC CE
  • the first UE may determine which implementation method is used for these N bits according to corresponding conditions.
  • the first UE may send SL CSI reports of multiple SL carriers through one SL MAC CE, so these N bits may indicate the SL carrier corresponding to the information included (or indicated) by the SL MAC CE, for example, indicating the first SL carrier.
  • the first UE may only send the SL CSI report of the SL carrier through one SL MAC CE, so the SL MAC CE may not need to indicate the SL carrier corresponding to the SL CSI report, then these N bits may not indicate any SL carrier, but serve as reserved bits.
  • the access network device may send third configuration information to the first UE, and the third configuration information may configure the SL CSI reference signal for the corresponding SL carrier of the first UE.
  • the SL carrier configured with the SL CSI reference signal may be all the SL carriers configured by the first UE, or some of the SL carriers configured by the first UE.
  • the SL carrier configured with the SL CSI reference signal may be a SL carrier for which the CSI acquisition function is enabled for the first UE, or a SL carrier that the first UE can use to send SL CSI reports.
  • the third configuration information may be included in an RRC reconfiguration message, or the third configuration information may be an RRC reconfiguration message.
  • the third configuration information may be the same configuration information as the second configuration information described in the embodiment shown in FIG. 2 .
  • the second configuration information may configure the SL CSI reference signal for the SL carrier.
  • the SL CSI reference signal configured by a SL carrier can be used to obtain the SL CSI report of the SL carrier.
  • a SL carrier of the first UE is configured with an SL CSI reference signal
  • other UEs can send SL reference signals to the first UE on the SL carrier according to the configuration, and the first UE measures the SL reference signal to obtain the SL CSI report of the SL carrier.
  • the SL reference signal includes, for example, a sidelink synchronization signal and a physical broadcast channel (PBCH) block (S-SSB), or includes other SL reference signals.
  • PBCH physical broadcast channel
  • the first UE may send SL CSI reports of multiple SL carriers through one SL MAC CE, so the N bits may indicate the SL carrier corresponding to the information included (or indicated) by the SL MAC CE, for example, indicating the first SL carrier.
  • the first UE may only send the SL CSI report of the SL carrier through one SL MAC CE, so the SL MAC CE may not need to indicate the SL carrier corresponding to the SL CSI report, then the N bits may not indicate any SL carrier, but may serve as reserved bits.
  • the first UE may send SL CSI reports of multiple SL carriers through one SL MAC CE, so the N bits may indicate the SL carrier corresponding to the information included (or indicated) by the SL MAC CE, for example, indicating the first SL carrier.
  • the first UE may only send the SL CSI report of the SL carrier through one SL MAC CE, so the SL MAC CE may not need to indicate the SL carrier corresponding to the SL CSI report, and the N bits may not indicate any SL carrier, but serve as reserved bits.
  • the first UE may also use other methods to determine the implementation of the N bits, without specific limitation.
  • the same method as the first UE may also be used to determine the implementation of the N bits, so that the first UE and the second UE have the same understanding of the N bits to achieve the effect of correct transmission.
  • the transmission of the SL CSI report may not consider the carrier constraint condition, for example, one SL MAC CE may indicate the SL CSI reports of multiple SL carriers, thereby saving transmission overhead.
  • the N bits included in the SL MAC CE may also indicate the SL carrier corresponding to the information indicated by the SL MAC CE, so that the second UE can clearly identify the carrier corresponding to the information indicated by the SL MAC CE, thereby improving the accuracy of information transmission.
  • the fourth communication method provided by the embodiment of the present application is introduced below. Please refer to Figure 6 for a flow chart of the method. Among them, the fourth communication method can be applied to the transmission mode 2 of SL MAC CE as described above.
  • the SL MAC CE may include (or indicate) a SL CSI report of at least one SL carrier.
  • the SL MAC CE is, for example, a SL-CSI reporting MAC CE.
  • the first SL resource is, for example, a SL resource on a first SL carrier.
  • the first SL carrier may be one of the at least one SL carriers, or may not belong to at least one SL carrier.
  • the first UE may also uniformly maintain a SL CSI report, or maintain a SL CSI report status, and the SL CSI report status may correspond to all SL carriers configured by the first UE, or to all carriers on which the first UE is enabled with the CSI acquisition function, or to all carriers that the first UE can use to send SL CSI reports.
  • other UEs such as the second UE
  • the first UE may trigger the SL CSI report, or may set the SL CSI report status to a triggered state; or, if the SL CSI report has been triggered, or the SL CSI report status is in a triggered state, the first UE may keep the SL CSI report status unchanged. After triggering the SL CSI report, or after determining that the SL CSI report is triggered, the first UE may send a SL CSI report of at least one SL carrier.
  • the first UE may maintain SL CSI reports, or maintain SL CSI report status, for different SL carriers (or SL CSI reports of different SL carriers; or different SL MAC CEs).
  • S601 may also be replaced by: the SL CSI report of at least one SL carrier is triggered, and the first UE sends a SL MAC CE to the second UE on the first SL resource.
  • the second UE receives the SL MAC CE from the first UE on the first SL resource.
  • the first UE may trigger the SL CSI report of the SL carrier, or the SL CSI report status of the SL carrier may be set to a triggered state.
  • the first UE may trigger an SL CSI report of at least one SL carrier, that is, the first UE may trigger at least one SL CSI report.
  • the first UE can send the SL CSI report of at least one SL carrier.
  • the first UE can use the SL resources to send all SL MAC CEs, for example, the SL resources are the first SL resources.
  • the first UE can use the SL resources to send the part of the SL MAC CE, for example, the SL resources are the first SL resources.
  • the first UE can trigger the SR.
  • the first UE can uniformly maintain an SR, or maintain an SR state
  • the SR state can correspond to all SL carriers configured by the first UE, or to all carriers on which the CSI acquisition function is enabled for the first UE, or to all carriers that the first UE can use to send SL CSI reports.
  • the first UE wants to request SL resources on any one or more SL carriers, then if the SR has been triggered (or the SR state has been set to the triggered state), the first UE can maintain the triggered state of the SR, or if the SR has not been triggered (or the SR state has not been set to the triggered state, or the SR state is the canceled trigger state), the first UE can trigger the SR, or set the SR state to the triggered state.
  • the first UE can send the SR to the access network device.
  • the access network device can allocate SL resources to the first UE, for example, allocate the first SL resource.
  • the first UE obtains the first SL resource, it can use the first SL resource to send the SL MAC CE to the second UE.
  • the SL MAC CE may include N bits, which may indicate, for example, at least one SL carrier, or may be used as reserved bits.
  • N bits may indicate, for example, at least one SL carrier, or may be used as reserved bits.
  • the first UE cancels the triggered SL CSI report.
  • the first UE uniformly maintains a SL CSI report. If the SL MAC CE includes (or indicates) SL CSI reports of all SL carriers to be sent, then if there is no SL CSI report of the SL carrier to be sent after the SL MAC CE is sent, the first UE may cancel the triggered SL CSI report, or set the SL CSI report status to a canceled trigger state.
  • the first UE may not cancel the triggered SL CSI report, or set the SL CSI report status to a canceled trigger state, but keep the SL CSI report in a triggered state.
  • the first UE may also maintain SL CSI reports for different SL carriers (or, SL CSI reports of different SL carriers; or, different SL MAC CEs), and S602 may be replaced by: the first UE cancels the SL CSI report of at least one triggered SL carrier. That is, after the SL MAC CE is sent, the first UE may cancel the SL CSI report of at least one triggered SL carrier, or may set the SL CSI report status of at least one SL carrier to a canceled triggering status.
  • the first UE may keep the SL CSI reports of other SL carriers unchanged, or in other words, keep the SL CSI report status of other SL carriers unchanged.
  • Example For example, if in addition to the SL CSI report of at least one SL carrier being triggered, the SL CSI reports of other SL carriers are also triggered, then after the SL MAC CE is sent, the first UE can cancel the SL CSI report of at least one triggered SL carrier, but not cancel the SL CSI reports of other triggered SL carriers, thereby not affecting the sending of SL CSI reports of other SL carriers.
  • the first UE can obtain the first SL resource by triggering SR
  • the first UE can obtain the first SL resource by triggering SR
  • the SL MAC CE includes (or indicates) SL CSI reports of all SL carriers to be sent
  • the first UE can cancel the triggered SR (or set the SR state to a canceled trigger state).
  • the first UE may not cancel the triggered SR, or may not set the SR state to a canceled trigger state, but may keep the SR in a triggered state.
  • the technical solution provided by the embodiment of the present application provides a method for the UE to maintain the SL CSI report status and the SR status. Even in the scenario of multiple SL carriers, the UE can correctly maintain the SL CSI report status and the SR status, so that the transmission between different SL carriers will not interfere with each other, which helps to improve the transmission efficiency and accuracy. Moreover, since the transmission of the SL CSI report can be regardless of the carrier constraint, the UE can uniformly maintain one SL CSI report and one SR, which can reduce the number of states maintained by the UE and simplify the implementation of the UE.
  • the fifth communication method provided by the embodiment of the present application is introduced below. Please refer to Figure 7 for a flow chart of the method. Among them, the fifth communication method can also be applied to the second transmission mode of SL MAC CE as described above.
  • the first UE determines the SL CSI reports of some SL carriers from the SL CSI reports of all SL carriers.
  • the SL MAC CE is, for example, a SL-CSI reporting MAC CE.
  • the number of all SL carriers corresponding to the SL CSI reports to be sent is K
  • the number of partial SL carriers determined by the first UE is F
  • the first UE determines the SL CSI reports of the F SL carriers from the SL CSI reports of all SL carriers.
  • K is a positive integer
  • F is a positive integer less than or equal to K.
  • the SL MAC CE may include N bits, which may indicate the part of the SL carriers, or may be used as reserved bits.
  • N bits may indicate the part of the SL carriers, or may be used as reserved bits.
  • the SL resource cannot carry the SL CSI reports of all SL carriers to be sent, it indicates that the SL MAC CE cannot carry the SL CSI reports of all SL carriers to be sent; or, it indicates that the SL resource cannot carry the SL MAC CE and the subheader of the MAC CE, and the SL resource is used for new transmission, wherein the SL MAC CE includes the SL CSI reports of all SL carriers; or, it indicates that the SL resource cannot carry the MAC CE corresponding to the SL CSI reports of all SL carriers and the subheader of the corresponding MAC CE, and the SL resource is used for new transmission.
  • the first UE can determine the SL CSI reports of some SL carriers from the SL CSI reports of all SL carriers, and the SL MAC CE can carry the SL CSI reports of these part of SL carriers, so that the SL resource can carry the SL MAC CE, or, so that the SL resource can carry the SL MAC CE and the subheader of the SL MAC CE.
  • the SL resource can send the SL MAC CE; but if the SL MAC CE carries the SL CSI report of any more SL carrier (i.e., the SL MAC CE carries the SL CSI reports of F+1 SL carriers), the SL resource cannot send the SL MAC CE, or the SL resource cannot send the SL MAC CE and the subheader of the SL MAC CE.
  • the first UE can determine the SL CSI reports of some SL carriers from the SL CSI reports of all SL carriers, and the SL resource can carry the MAC CE corresponding to the SL CSI reports of these SL carriers, or the SL resource can carry the MAC CE corresponding to the SL CSI reports of these SL carriers and the corresponding subheader of the SL MAC CE.
  • the SL resource can send the F SL MAC CEs, or the SL can send the F SL MAC CEs and the corresponding SL MAC CE sub-headers; but if the SL resource carries the MAC CE corresponding to the SL CSI report of any more SL carrier (that is, the SL MAC CE carries the MAC CE corresponding to the SL CSI reports of F+1 SL carriers), the SL resource cannot send the F+1 SL MAC CEs, or the SL resource cannot send the F+1 SL MAC CEs and the corresponding SL MAC CE sub-headers.
  • the first UE may request SL resources from the access network device for transmission.
  • the process of the first UE triggering SR and requesting SL resources please refer to the introduction of the embodiment shown in FIG6 .
  • the format of the SL MAC CE and other contents please refer to the introduction of the embodiment shown in FIG4 .
  • the first UE determines the SL CSI reports of some SL carriers from the SL CSI reports of all SL carriers in the following manner: Any one of the methods from method A to method H, or a combination of any multiple methods from method A to method H. These methods are introduced below.
  • Method A Priority selection method.
  • the access network device or the second UE may pre-configure (or reconfigure) the priority of one or more SL carriers to the first UE, or configure (or reconfigure) the priority of one or more SL CSI reports.
  • the above-mentioned SL carriers configured with priorities are, for example, all carriers configured for the first UE, or all SL carriers that the first UE can send SL CSI reports, or all carriers that the first UE can send SL-CSI reporting MAC CE, or some carriers for which the first UE is enabled with the CSI acquisition function.
  • the priority of the corresponding SL carrier may be configured at the same time; or, when the access network device or the second device configures the addition of an SL carrier for the first UE, the priority of the added SL carrier may be configured; or, when the access network device or the second device configures the modification or release of the SL carrier for the first UE, the priority of the SL carrier that has not been modified or released may be reconfigured.
  • the first UE may choose to give priority to sending SL CSI reports with higher priorities, or give priority to sending SL CSI reports of SL carriers with higher priorities. For example, if the priority of F SL carriers is higher than or equal to the priority of the remaining SL carriers except for the F SL carriers among the K SL carriers, the access network device may determine to send SL CSI reports of F SL carriers this time. Alternatively, if the priority of SL CSI reports of F SL carriers is higher than or equal to the priority of SL CSI reports of the remaining SL carriers except for the SL CSI reports of F SL carriers among the SL CSI reports of K SL carriers, the access network device may determine to send SL CSI reports of F SL carriers this time.
  • any one or more of the methods B to H may be used.
  • the UE may randomly select which SL CSI report of which SL carriers is to be sent with priority.
  • Method B channel quality change amount selection method.
  • the amount of change in the channel quality of an SL carrier can be determined based on the SL CSI report currently to be sent by the SL carrier and the last SL CSI report of the SL carrier.
  • An optional way is that the channel quality is measured by channel quality information (CQI), and the SL CSI report of an SL carrier can indicate the CQI of the SL carrier. Then, the amount of change in the channel quality of an SL carrier can be determined based on the CQI indicated by the SL CSI report currently to be sent by the SL carrier and the CQI indicated by the last SL CSI report of the SL carrier.
  • CQI channel quality information
  • the amount of change in the channel quality of an SL carrier can be equal to the difference between the CQI indicated by the SL CSI report currently to be sent by the SL carrier and the CQI indicated by the last SL CSI report of the SL carrier.
  • the difference between the two CQIs can be determined based on the indexes of the two CQIs.
  • the difference between the two CQIs can be the difference between the indexes of the two CQIs. The larger the difference, the greater the amount of change in the channel quality.
  • the first UE can choose to give priority to sending the SL CSI report of the SL carrier with a large channel quality change amount.
  • the last CQI index of SL carrier 1 is 5, the current CQI index is 1, and the difference between the two indexes is 4; the last CQI index of SL carrier 2 is 10, the current CQI index is 12, and the difference between the two indexes is 2, then the first UE can give priority to sending the SL CSI report of SL carrier 1.
  • the channel quality change amount corresponding to the SL CSI reports of F SL carriers is greater than or equal to the channel quality change amount corresponding to the SL CSI reports of the remaining SL carriers except the SL CSI reports of F SL carriers in the SL CSI reports of K SL carriers.
  • the first UE wants to select the SL CSI report to be sent first from the SL CSI reports of the multiple SL carriers, any one or more of the methods A to H except method B may be used.
  • the SL CSI report of which SL carrier or carriers is to be sent first may be achieved by random selection by the UE.
  • Method C channel quality selection method.
  • the channel quality of an SL carrier can be determined based on the SL CSI report currently to be sent by the SL carrier.
  • An optional way is that the channel quality is measured by CQI, and the SL CSI report of an SL carrier can indicate the CQI of the SL carrier. Then, the channel quality of an SL carrier can be determined based on the CQI indicated by the SL CSI report currently to be sent by the SL carrier, for example, the index of the CQI can reflect the channel quality of the SL carrier. For example, the larger the index of the CQI of an SL carrier, the better the channel quality of the SL carrier.
  • the first UE may choose to give priority to sending the SL CSI report of the SL carrier with good channel quality. For example, if the current CQI index of SL carrier 1 is 11 and the current CQI index of SL carrier 2 is 2, the first UE may give priority to sending the SL CSI report of SL carrier 1. For example, the channel quality corresponding to the SL CSI reports of F SL carriers is greater than or equal to the SL CSI of K SL carriers.
  • the first UE wants to select the SL CSI report to be sent first from the SL CSI reports of the multiple SL carriers, any one or more of the methods A to H except method C and method D may be used.
  • the SL CSI report of which SL carrier or carriers is to be sent first may be achieved by random selection by the UE.
  • Method D channel quality information index selection method.
  • the channel quality information is measured, for example, by CQI, and the channel quality information index may be a CQI index.
  • the channel quality information index may be a CQI index.
  • a larger CQI index of a SL carrier indicates better channel quality of the SL carrier, and thus the channel quality may be determined by the CQI index.
  • the first UE may choose to preferentially send the SL CSI report of the SL carrier with a larger channel quality information index. For example, if the current CQI index of SL carrier 1 is 11 and the current CQI index of SL carrier 2 is 2, the first UE may preferentially send the SL CSI report of SL carrier 1.
  • the channel quality information index corresponding to the SL CSI report of F SL carriers is greater than or equal to the channel quality information index corresponding to the SL CSI report of the remaining SL carriers except the SL CSI report of F SL carriers in the SL CSI report of K SL carriers.
  • the first UE wants to select the SL CSI report to be sent first from the SL CSI reports of the multiple SL carriers, any one or more of the methods A to H except for method C and method D may be used.
  • the SL CSI report of which SL carrier or carriers is to be sent first may be achieved by random selection by the UE.
  • Method E Method for determining remaining effective time.
  • the SL CSI report of a SL carrier generally has a certain feedback duration, or effective duration. If the first UE sends the SL CSI report within the effective duration, or the second UE receives the SL CSI report within the effective duration, the SL CSI report is valid; otherwise, if the first UE does not send the SL CSI report within the effective duration, or the second UE does not receive the SL CSI report within the effective duration, the SL CSI report is invalid, that is, the first UE no longer sends an invalid SL CSI report, or, even if the second UE subsequently receives the SL CSI report, it will be regarded as invalid information.
  • the SL CSI report of a SL carrier should reach the second UE within the corresponding effective duration to reduce the information transmission delay and the proportion of invalid information.
  • the SL CSI report of an SL carrier may correspond to a remaining valid duration, which is, for example, the remaining duration in the valid duration corresponding to the SL CSI report of the SL carrier, and the starting time of the remaining duration is the time when the first UE selects the SL CSI report of the SL carrier from the SL CSI reports of K SL carriers.
  • the effective duration can be controlled by a timer, such as a sidelink channel state information reporting timer (sl-CSI-ReportingTimer).
  • a timer such as a sidelink channel state information reporting timer (sl-CSI-ReportingTimer).
  • the second UE can start the sl-CSI-ReportingTimer.
  • the first UE can also start the sl-CSI-ReportingTimer when sending the SCI or after the SCI is sent, so that the first UE and the second UE can control the SL CSI report of the SL carrier according to the synchronized effective duration.
  • the remaining effective duration of the SL CSI report of a SL carrier is, for example, the remaining duration of the sl-CSI-ReportingTimer corresponding to the SL carrier (or, the sl-CSI-ReportingTimer corresponding to the SL CSI report of the SL carrier), and the starting time of the remaining duration is the time when the first UE selects the SL CSI report of the SL carrier from the SL CSI reports of the K SL carriers.
  • the first UE can choose to give priority to sending the SL CSI report of the SL carrier with a smaller remaining effective duration.
  • the remaining duration of the sl-CSI-ReportTimer corresponding to SL carrier 1 is 10 slots
  • the remaining duration of the sl-CSI-ReportTimer corresponding to SL carrier 2 is 50 slots
  • the first UE can give priority to sending the SL CSI report of SL carrier 1.
  • the remaining effective duration corresponding to the SL CSI reports of F SL carriers is less than or equal to the remaining effective duration corresponding to the SL CSI reports of the remaining SL carriers except the SL CSI reports of F SL carriers in the SL CSI reports of K SL carriers.
  • the first UE wants to select the SL CSI report to be sent first from the SL CSI reports of the multiple SL carriers, any one or more of the methods A to H except method E may be used.
  • the SL CSI report of which SL carrier or carriers is to be sent first may be achieved by random selection by the UE.
  • Method F trigger time selection method.
  • the triggering time of the SL CSI report of an SL carrier for example, the time when the first UE receives the SCI from the second UE, and the SCI can schedule the SL CSI report of the SL carrier; or, the triggering time of the SL CSI report of an SL carrier, for example, the time when the first UE internally triggers the SL CSI report of the SL carrier (or, sets the SL CSI report of the SL carrier to a triggered state).
  • the first UE may choose to give priority to sending the SL CSI report of the SL carrier with an earlier trigger time.
  • the trigger time corresponding to the SL CSI report of SL carrier 1 is T1
  • the trigger time corresponding to the SL CSI report of SL carrier 2 is T2
  • T2 is earlier than T1
  • the first UE may give priority to sending the SL CSI report of SL carrier 2.
  • the trigger time of the SL CSI report of F SL carriers is earlier than or equal to the trigger time of the SL CSI report of the remaining SL carriers except the SL CSI report of F SL carriers in the SL CSI report of K SL carriers.
  • the triggering time of SL CSI reports of multiple SL carriers is the same, for example, the triggering time of multiple SL CSI reports is triggered by one SCI
  • the first UE wants to select the SL CSI report to be sent first from the SL CSI reports of the multiple SL carriers any one or more of the methods A to H except method F may be used.
  • the UE may randomly select which SL CSI report of which SL carriers is to be sent first.
  • Method G main SL carrier selection method.
  • the first UE is configured with multiple SL carriers, and the multiple SL carriers may include a primary SL carrier, and the remaining SL carriers are secondary SL carriers. Then the first UE may choose to preferentially send the SL CSI report of the primary SL carrier.
  • the F SL carriers may include the primary SL carrier of the first UE.
  • the first UE may have one or more secondary SL carriers. If the first UE wants to select a SL CSI report to be sent preferentially from the SL CSI reports of the one or more secondary SL carriers, any one or more of the methods A to H except method G may be used. Alternatively, the UE may randomly select which secondary SL carrier or carriers to send preferentially.
  • Method H random selection method.
  • the first UE can randomly select SL CSI reports of F SL carriers from the SL CSI reports of K SL carriers.
  • the first UE sends the SL MAC CE to the second UE.
  • the second UE receives the SL MAC CE from the first UE.
  • the SL MAC CE includes (or indicates) SL CSI reports of F SL carriers.
  • the first UE can use multiple methods to determine the SL CSI reports of F SL carriers, so that the SL CSI reports of F SL carriers can be sent to reduce the transmission delay of the SL CSI reports, and the SL CSI reports of F SL carriers are relatively more important, which is more conducive to the receiving end UE to adjust the scheduling parameters according to the received SL CSI reports, thereby optimizing the transmission performance.
  • the selection method of the first UE is diverse and more flexible.
  • FIG8 is a schematic diagram of the structure of a communication device provided in an embodiment of the present application.
  • the communication device 800 may be the first terminal device or the circuit system of the first terminal device described in any one of the embodiments shown in FIG2, FIG3, FIG4, FIG6 or FIG7, and is used to implement the method corresponding to the first terminal device in the above method embodiment.
  • the communication device 800 may be the circuit system of the access network device in the embodiment shown in FIG2, and is used to implement the method corresponding to the access network device in the above method embodiment.
  • a circuit system is a chip system.
  • the communication device 800 includes at least one processor 801.
  • the processor 801 can be used for internal processing of the device to implement certain control processing functions.
  • the processor 801 includes instructions.
  • the processor 801 can store data.
  • different processors can be independent devices, can be located in different physical locations, and can be located on different integrated circuits.
  • different processors can be integrated into one or more processors, for example, integrated on one or more integrated circuits.
  • the communication device 800 includes one or more memories 803 for storing instructions.
  • data may also be stored in the memory 803.
  • the processor and the memory may be provided separately or integrated together.
  • the communication device 800 includes a communication line 802 and at least one communication interface 804. Since the memory 803, the communication line 802 and the communication interface 804 are all optional, they are all indicated by dotted lines in FIG. 8 .
  • the communication device 800 may further include a transceiver and/or an antenna.
  • the transceiver may be used to send information to other devices or receive information from other devices.
  • the transceiver may be referred to as a transceiver, a transceiver circuit, an input/output interface, etc., and is used to implement the transceiver function of the communication device 800 through an antenna.
  • the transceiver includes a transmitter and a receiver.
  • the transmitter may be used to generate a radio frequency signal from a baseband signal
  • the receiver may be used to convert the radio frequency signal into a baseband signal.
  • Processor 801 may include a general-purpose central processing unit (CPU), a microprocessor, an application specific integrated circuit (ASIC), or one or more integrated circuits for controlling the execution of the program of the present application.
  • CPU central processing unit
  • ASIC application specific integrated circuit
  • the communication link 802 may include a pathway to transmit information between the above-mentioned components.
  • the communication interface 804 uses any transceiver-like device for communicating with other devices or communication networks, such as Ethernet, radio access network (RAN), wireless local area networks (WLAN), wired access networks, etc.
  • RAN radio access network
  • WLAN wireless local area networks
  • wired access networks etc.
  • the memory 803 may be a read-only memory (ROM) or other types of static storage devices that can store static information and instructions, a random access memory (RAM) or other types of dynamic storage devices that can store information and instructions, or an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM) or other optical disc storage, optical disc storage (including compressed optical disc, laser disc, optical disc, digital versatile disc, Blu-ray disc, etc.), a magnetic disk storage medium or other magnetic storage device, or any other medium that can be used to carry or store the desired program code in the form of instructions or data structures and can be accessed by a computer, but is not limited thereto.
  • the memory 803 may exist independently and be connected to the processor 801 through the communication line 802. Alternatively, the memory 803 may also be integrated with the processor 801.
  • the memory 803 is used to store computer-executable instructions for executing the solution of the present application, and the execution is controlled by the processor 801.
  • the processor 801 is used to execute the computer-executable instructions stored in the memory 803, so as to implement the steps performed by the first terminal device in any of the embodiments shown in FIG. 2, FIG. 3, FIG. 4, FIG. 6 or FIG. 7, or to implement the steps performed by the access network device in the embodiment shown in FIG. 2.
  • the computer-executable instructions in the embodiments of the present application may also be referred to as application code, which is not specifically limited in the embodiments of the present application.
  • the processor 801 may include one or more CPUs, such as CPU0 and CPU1 in FIG. 8 .
  • the communication device 800 may include multiple processors, such as the processor 801 and the processor 805 in FIG8. Each of these processors may be a single-core (single-CPU) processor or a multi-core (multi-CPU) processor.
  • the processor here may refer to one or more devices, circuits, and/or processing cores for processing data (such as computer program instructions).
  • the chip includes a processor 801 (may also include a processor 805), a communication line 802 and a communication interface 804, and optionally, may include a memory 803.
  • the communication interface 804 may be an input interface, a pin or a circuit, etc.
  • the memory 803 may be a register, a cache, etc.
  • the processor 801 and the processor 805 may be a general-purpose CPU, a microprocessor, an ASIC, or one or more integrated circuits for controlling the execution of the program of the communication method of any of the above embodiments.
  • the embodiment of the present application may divide the functional modules of the device according to the above method example.
  • each functional module may be divided corresponding to each function, or two or more functions may be integrated into one processing module.
  • the above integrated module may be implemented in the form of hardware or in the form of software functional modules.
  • FIG9 shows a schematic diagram of a device, and the device 900 may be the first terminal device or access network device involved in the above method embodiments, or a chip in the first terminal device or a chip in the access network device.
  • the device 900 includes a sending unit 901, a processing unit 902, and a receiving unit 903.
  • the device 900 can be used to implement the steps performed by the first terminal device or the access network device in the communication method of the embodiment of the present application.
  • the relevant features can refer to any one of the embodiments shown in Figures 2, 3, 4, 6 or 7 above, and will not be repeated here.
  • the functions/implementation processes of the sending unit 901, the receiving unit 903, and the processing unit 902 in FIG9 can be implemented by the processor 801 in FIG8 calling the computer execution instructions stored in the memory 803.
  • the functions/implementation processes of the processing unit 902 in FIG9 can be implemented by the processor 801 in FIG8 calling the computer execution instructions stored in the memory 803, and the functions/implementation processes of the sending unit 901 and the receiving unit 903 in FIG9 can be implemented by the communication interface 804 in FIG8.
  • the functions/implementation processes of the sending unit 901 and the receiving unit 903 can also be implemented through pins or circuits.
  • the present application also provides a computer-readable storage medium, which stores a computer program or instruction.
  • the computer program or instruction When the computer program or instruction is executed, the method performed by the first terminal device or the access network device in the aforementioned method embodiment is implemented.
  • the functions described in the above embodiments can be implemented in the form of software functional units and sold or used as independent products.
  • the technical solution of the present application can be essentially or in other words, the part that contributes or the part of the technical solution can be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present application.
  • the storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.
  • the present application also provides a computer program product, which includes: a computer program code, when the computer program code is executed on a computer, the computer executes the method executed by the first terminal device or the access network device in any of the aforementioned method embodiments.
  • An embodiment of the present application also provides a processing device, including a processor and an interface; the processor is used to execute the method executed by the first terminal device or access network device involved in any of the above method embodiments.
  • the computer program product includes one or more computer instructions.
  • the computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device.
  • the computer instructions may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium.
  • the computer instructions may be transmitted from one website site, computer, server or data center to another website site, computer, server or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means.
  • the computer-readable storage medium may be any available medium that a computer can access or a data storage device such as a server or data center that includes one or more available media integrated.
  • the available medium may be a magnetic medium (e.g., a floppy disk, a hard disk, a tape), an optical medium (e.g., a DVD), or a semiconductor medium (e.g., a solid state drive (SSD)), etc.
  • the various illustrative logic units and circuits described in the embodiments of the present application can be implemented or operated by a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic, discrete hardware components, or any combination of the above.
  • the general-purpose processor can be a microprocessor, and optionally, the general-purpose processor can also be any conventional processor, controller, microcontroller or state machine.
  • the processor can also be implemented by a combination of computing devices, such as a digital signal processor and a microprocessor, multiple microprocessors, one or more microprocessors combined with a digital signal processor core, or any other similar configuration.
  • the steps of the method or algorithm described in the embodiments of the present application can be directly embedded in hardware, a software unit executed by a processor, or a combination of the two.
  • the software unit can be stored in RAM, flash memory, ROM, erasable programmable read-only memory (EPROM), EEPROM, register, hard disk, removable disk, CD-ROM or any other form of storage medium in the art.
  • the storage medium can be connected to the processor so that the processor can read information from the storage medium and can write information to the storage medium.
  • the storage medium can also be integrated into the processor.
  • the processor and the storage medium can be arranged in an ASIC, and the ASIC can be arranged in a terminal device.
  • the processor and the storage medium can also be arranged in different components in the terminal device.
  • These computer program instructions may also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, whereby the instructions executed on the computer or other programmable device provide steps for implementing the functions specified in one or more processes in the flowchart and/or one or more boxes in the block diagram.
  • the first terminal device or the access network device can perform some or all of the steps in the embodiment of the present application, and these steps or operations are only examples. In the embodiment of the present application, other operations or variations of various operations can also be performed. In addition, the various steps can be performed in different orders presented in the embodiment of the present application, and it is possible that not all operations in the embodiment of the present application need to be performed.

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Abstract

本申请涉及一种通信方法及装置。第一终端设备接收来自接入网设备的第一配置信息，其包括侧行链路载波与SR配置之间的关联关系。若第一侧行链路载波的侧行链路CSI报告被触发，且第一侧行链路载波上没有用于发送第一侧行链路MAC CE的侧行链路资源，则第一终端设备向接入网设备发送第一SR，以请求侧行链路资源。第一侧行链路MAC CE用于指示第一侧行链路载波的侧行链路CSI报告，第一SR对应第一侧行链路载波关联的SR配置，或对应预先配置的SR配置。第一终端设备通过与侧行链路载波关联的SR配置对应的SR就能够申请该侧行链路载波上的侧行链路资源，由此实现了多个侧行链路载波下第一终端设备能够申请侧行链路资源。

Description

一种通信方法及装置
相关申请的交叉引用
本申请要求在2022年09月29日提交中国国家知识产权局、申请号为202211205056.1、申请名称为“一种通信方法及装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及通信技术领域，尤其涉及一种通信方法及装置。
背景技术
侧行链路(sidelink，SL)标准最初是为车联网(vehicle-to-everything，V2X)应用开发的，但业界对于将SL扩展到商业用例的适用性越来越感兴趣。对于商业SL应用，确定了两个关键要求：1、增加SL数据速率；2、支持用于SL的新的载波频率。
提高SL数据速率的动机是在具有高度驾驶自动化的车辆之间能够共享传感器信息(例如视频等)。目前考虑一种提高侧SL数据速率的方式为，使得用户设备(user equipment，UE)能够支持SL载波聚合(carrier aggregation，CA)，由此可以实现更高的数据速率，但目前尚未讨论关于UE之间通过多个SL载波通信的机制如何实现。
发明内容
本申请实施例提供一种通信方法及装置，用于提供UE之间通过多个SL载波通信时的一种机制。
第一方面，提供第一种通信方法，该方法可由终端设备执行，或由包括终端设备功能的其他设备执行，或由芯片系统(或，芯片)或其他功能模块执行，该芯片系统或功能模块能够实现终端设备的功能，该芯片系统或功能模块例如设置在终端设备中。该终端设备例如为第一终端设备。该方法包括：接收来自接入网设备的第一配置信息，所述第一配置信息包括侧行链路载波与调度请求(scheduling request，SR)配置之间的关联关系；若第一侧行链路载波的侧行链路信道状态信息(channel state information，CSI)报告(reporting)被触发，且所述第一侧行链路载波上没有用于发送第一侧行链路MAC CE的侧行链路资源，则向所述接入网设备发送第一SR，所述第一SR用于请求侧行链路资源，所述第一侧行链路MAC CE用于指示所述第一侧行链路载波的侧行链路CSI报告。其中，所述第一SR对应所述第一侧行链路载波关联的SR配置，例如第一配置信息配置了第一侧行链路载波与第一SR配置之间的关联关系，则第一SR可以对应第一SR配置；或者，所述第一SR对应预先配置的SR配置。
本申请实施例中，在第一侧行链路载波的侧行链路CSI报告被触发时，对于配置了侧行链路资源分配模式1(mode 1)的第一终端设备，如果没有可用的侧行链路资源，则第一终端设备可以通过SR向接入网设备申请侧行链路资源，侧行链路资源分配模式1(mode 1)为接入网设备向UE分配SL资源的资源分配模式。而SR配置可以与侧行链路载波关联，因此第一终端设备在申请侧行链路资源时，通过与相应的侧行链路载波关联的SR配置对应的SR就能够申请该侧行链路载波上的侧行链路资源，使得接入网设备能够为第一终端设备分配合适的侧行链路载波上的资源，由此实现了多个侧行链路载波的情况下第一终端设备能够实现侧行链路资源的申请。而且如果第一终端设备在第一侧行链路载波的侧行链路资源上向第二终端设备发送侧行链路MAC CE，就能够表明该侧行链路MAC CE所包括的侧行链路CSI报告是第一侧行载波的侧行链路CSI报告，使得第二终端设备能够明确接收的究竟是哪个侧行链路载波的侧行链路CSI报告，而不会混淆不同侧行链路载波的侧行链路CSI报告。且这种方式也不必在侧行链路MAC CE中添加额外的指示信息来指示侧行链路CSI报告对应的侧行链路载波，能够节省信令开销。
在一种可选的实施方式中，所述方法还包括：接收来自所述接入网设备的用于指示第一侧行链路资源的信息，所述第一侧行链路资源为所述第一侧行链路载波上的资源；通过所述第一侧行链路资源向第二终端设备发送所述第一侧行链路MAC CE。第一终端设备向接入网设备发送第一SR后，接入网设备根据第一SR对应的SR配置，就能够确定第一SR是用于请求第一SL载波上的SL资源(或者用于请求包括第一SL载波的多个SL载波上的SL资源)，则接入网设备可以为第一终端设备分配第一SL载 波上的SL资源(或者分配包括第一SL载波的多个SL载波上的SL资源)，从而第一终端设备能够获得接入网设备所分配的SL资源。
在一种可选的实施方式中，所述第一配置信息包括的侧行链路载波为所述第一终端设备被配置的全部或部分侧行链路载波；或，所述第一配置信息包括的侧行链路载波为所述第一终端设备能够用于发送侧行链路CSI报告的全部或部分侧行链路载波；或，所述第一配置信息包括的侧行链路载波为所述第一终端设备的被使能了CSI获取功能的全部或部分侧行链路载波。第一终端设备可以被配置一个或多个SL载波，第一配置信息可以为这些SL载波中的全部或部分配置与SR配置之间的关联关系。例如第一终端设备被配置的SL载波中，有些SL载波虽然暂时不能用于发送SL CSI报告，但未来可能被配置为能够发送SL CSI报告。通过第一配置信息统一配置这些SL载波与SR配置之间的关联关系，在这些SL载波能够用于发送SL CSI报告时就可以直接应用这些关联关系，而不必再额外配置。或者，第一终端设备被配置的SL载波中，可能有些SL载波能够用于发送SL CSI报告(或者，被使能了CSI获取功能)，则第一配置信息可以配置这些SL载波中的全部或部分与SR配置之间的关联关系，而对于不能用于发送SL CSI报告的SL载波，可以不必配置其与SR配置之间的关联关系，有利于节省第一配置信息的开销。
在一种可选的实施方式中，所述第一配置信息还包括所述预先配置的SR配置，所述预先配置的SR配置用于请求未关联SR配置的侧行链路载波上的侧行链路资源。可能还有一些SL载波，第一配置信息并未配置这些SL载波与SR配置之间的关联关系。那么可选的，第一配置信息除了包括至少一组关联关系外，还可以包括预先配置的SR配置，该预先配置的SR配置可以适用于未关联SR配置的SL载波。通过预先配置的SR配置，可以减少关联关系的数量，且可以使得第一UE的各个SL载波都能够得到SL资源分配。
在一种可选的实施方式中，所述第一侧行链路载波上没有用于发送第一侧行链路MAC CE的侧行链路资源，包括：所述第一侧行链路载波上没有用于发送所述第一侧行链路MAC CE加上所述第一侧行链路MAC CE的子头的侧行链路资源，且所述侧行链路资源是用于新传的侧行链路资源。
在一种可选的实施方式中，所述侧行链路载波与SR配置之间的关联关系包括所述侧行链路载波与SR配置标识之间的关联关系，所述SR配置标识指示所述SR配置。第一配置信息通过配置SL载波与SR配置标识之间的关联关系，就能配置SL载波与SR配置之间的关联关系，而不必在第一配置信息中包括具体的SR配置(例如具体的SR配置可以由协议预定义，或者接入网设备与第一终端设备都可以预先存储SR配置)，能够减小第一配置信息的开销。
在一种可选的实施方式中，所述第一侧行链路MAC CE为侧行链路CSI报告MAC CE。第一SL MAC CE用于包括(或，指示)SL CSI报告，该SL MAC CE可以是SL CSI报告MAC CE，或者也可以是其他SL MAC CE。
第二方面，提供第二种通信方法，该方法可由接入网设备执行，或由包括接入网设备功能的其他设备执行，或由芯片系统(或，芯片)或其他功能模块执行，该芯片系统或功能模块能够实现接入网设备的功能，该芯片系统或功能模块例如设置在接入网设备中。该方法包括：向第一终端设备发送第一配置信息，所述第一配置信息包括侧行链路载波与SR配置之间的关联关系；接收来自所述第一终端设备的第一SR，所述第一SR用于请求侧行链路资源，其中，所述第一SR对应第一侧行链路载波关联的SR配置，或所述第一SR对应预先配置的SR配置。
在一种可选的实施方式中，所述方法还包括：向所述第一终端设备发送用于指示第一侧行链路资源的信息，所述第一侧行链路资源为所述第一侧行链路载波上的资源。
在一种可选的实施方式中，所述第一配置信息包括的侧行链路载波为所述第一终端设备被配置的全部或部分侧行链路载波；或，所述第一配置信息包括的侧行链路载波为所述第一终端设备能够用于发送侧行链路CSI报告的全部或部分侧行链路载波；或，所述第一配置信息包括的侧行链路载波为所述第一终端设备的被使能了CSI获取功能的全部或部分侧行链路载波。
在一种可选的实施方式中，所述第一配置信息还包括所述预先配置的SR配置，所述预先配置的SR配置用于请求未关联SR配置的侧行链路载波上的侧行链路资源。
在一种可选的实施方式中，所述侧行链路载波与SR配置之间的关联关系包括所述侧行链路载波与SR配置标识之间的关联关系，所述SR配置标识指示所述SR配置。
在一种可选的实施方式中，所述第一侧行链路MAC CE为侧行链路CSI报告MAC CE。
关于第二方面或各种可选的实施方式所带来的技术效果，可参考对于第一方面或相应实施方式的技术效果的介绍。
第三方面，提供第三种通信方法，该方法可由终端设备执行，或由包括终端设备功能的其他设备执行，或由芯片系统(或，芯片)或其他功能模块执行，该芯片系统或功能模块能够实现终端设备的功能，该芯片系统或功能模块例如设置在终端设备中。该终端设备例如为第一终端设备。该方法包括：向第二终端设备发送侧行链路MAC CE，所述侧行链路MAC CE用于指示第一侧行链路载波的侧行链路CSI报告，所述侧行链路MAC CE包括N个比特，所述N个比特用于指示所述第一侧行链路载波，或所述N个比特不用于指示任何侧行链路载波，N为正整数。本申请实施例中，在多SL载波的情况下，SL CSI报告的传输可以不考虑载波约束条件，例如一个SL MAC CE可指示多个SL载波的SL CSI报告，由此能够节省传输开销。另外，SL MAC CE包括的N个比特还可以指示该SL MAC CE指示的信息所对应的SL载波，使得第二终端设备能够明确该SL MAC CE指示的信息对应的载波，提高信息传输的准确率。
在一种可选的实施方式中，若所述第一终端设备有多于一个侧行链路载波被配置了侧行链路CSI参考信号，所述N个比特用于指示所述第一侧行链路载波，或者，若所述第一终端设备仅有一个侧行链路载波被配置了侧行链路CSI参考信号，所述N个比特不用于指示任何侧行链路载波；或，若所述第一终端设备有多于一个侧行链路载波被使能了CSI获取功能，所述N个比特用于指示所述第一侧行链路载波，或者，若所述第一终端设备仅有一个侧行链路载波被使能了CSI获取功能，所述N个比特不用于指示任何侧行链路载波；或，若所述第一终端设备被配置了多于一个侧行链路载波，所述N个比特用于指示所述第一侧行链路载波，或者，若所述第一终端设备被配置了一个侧行链路载波，所述N个比特不用于指示任何侧行链路载波。SL MAC CE包括的N个比特可以有不同的含义，例如可指示该SL MAC CE对应的SL载波，或者可以作为预留比特(其中，当N个比特依然作为预留比特时，不用于指示任何侧行链路载波)。究竟N个比特采用何种含义，可以通过如上方式确定，例如第一终端设备和第二终端设备可采用相同的方式来确定，从而第一终端设备和第二终端设备对于N个比特的理解可以达到一致。而且N个比特可以有不同的含义，也使得SL MAC CE的实现更为灵活。
在一种可选的实施方式中，所述侧行链路MAC CE为侧行链路CSI报告MAC CE。
第四方面，提供第四种通信方法，该方法可由终端设备执行，或由包括终端设备功能的其他设备执行，或由芯片系统(或，芯片)或其他功能模块执行，该芯片系统或功能模块能够实现终端设备的功能，该芯片系统或功能模块例如设置在终端设备中。该终端设备例如为第一终端设备。该方法包括：第一侧行链路载波的侧行链路CSI报告被触发，则在所述第一侧行链路载波的第一侧行链路资源上发送第一侧行链路MAC CE，所述第一侧行链路MAC CE用于指示所述第一侧行链路载波的侧行链路CSI报告；取消被触发的所述第一侧行链路载波的侧行链路CSI报告。通过本申请实施例提供的技术方案，提供了UE维护SL CSI报告状态的方式，例如第一终端设备对于不同的SL载波可以分别维护SL CSI报告状态，使得不同的SL载波的SL CSI报告状态不会互相影响，有助于提高传输效率和准确性。
在一种可选的实施方式中，所述方法还包括：不取消其他侧行链路载波的侧行链路CSI报告，其中，所述其他侧行链路载波的CSI报告也已被触发。如果除了第一SL载波的SL CSI报告被触发外，还有其他SL载波的SL CSI报告被触发，那么在第一SL MAC CE发送完毕后，第一终端设备可以取消被触发的第一SL载波的SL CSI报告，但不取消被触发的其他SL载波的SL CSI报告，从而不会影响其他SL载波的SL CSI报告的发送。
在一种可选的实施方式中，在所述第一侧行链路载波的第一侧行链路资源上发送第一侧行链路MAC CE之后，所述方法还包括：取消所述第一侧行链路载波被触发的SR，或者，取消所述第一侧行链路载波的侧行链路CSI报告对应的被触发的SR，或者，取消所述第一侧行链路MAC CE对应的被触发的SR。例如，第一终端设备对于不同的SL载波(或者，不同的SL载波的SL CSI报告；或者，不同的SL MAC CE)可以分别维护SR，或者说维护SR状态。在第一SL MAC CE发送完毕后，第一终端设备除了可以取消被触发的第一SL载波的SL CSI报告之外，还可以取消被触发的第一SL载波的SR。可选的，第一终端设备可以不取消其他侧行链路载波的SR，其中，所述其他侧行链路载波的SR也已被触发，也就是说，第一UE可以保持其他SL载波的SR不变，从而不影响其他SL载波的传输过程。
或者，第一UE可以统一维护一个SR，那么在第一SL CSI MAC CE发送完毕后，如果除了第一 SL载波的SL CSI报告被触发外没有其他SL载波的SL CSI报告被触发，或者，如果第一SL MAC CE指示了被触发的全部SL载波的SL CSI报告，则第一终端设备可以取消被触发的SR。或者，在第一SL CSI MAC CE发送完毕后，如果除了第一SL载波的SL CSI报告被触发外还有其他SL载波的SL CSI报告被触发，或者，如果第一SL MAC CE指示了被触发的部分SL载波的SL CSI报告，则第一终端设备可以不取消被触发的SR，使得各个SL载波的SL CSI报告得以正常发送。
在一种可选的实施方式中，所述方法还包括：接收SCI，所述SCI用于调度所述第一侧行链路载波的侧行链路CSI报告；触发所述第一侧行链路载波的侧行链路CSI报告。例如，第二终端设备可以向第一终端设备发送SCI，以调度第一SL载波的SL CSI报告。第一终端设备接收该SCI后，可以触发第一SL载波的SL CSI报告。
在一种可选的实施方式中，所述第一侧行链路MAC CE为侧行链路CSI报告MAC CE。
第五方面，提供第五种通信方法，该方法可由终端设备执行，或由包括终端设备功能的其他设备执行，或由芯片系统(或，芯片)或其他功能模块执行，该芯片系统或功能模块能够实现终端设备的功能，该芯片系统或功能模块例如设置在终端设备中。该终端设备例如为第一终端设备。该方法包括：侧行链路CSI报告被触发，则在第一侧行链路资源上发送侧行链路MAC CE，所述侧行链路MAC CE用于指示至少一个侧行链路载波的侧行链路CSI报告；如果所述侧行链路MAC CE指示了待发送的全部侧行链路载波的侧行链路CSI报告，则取消被触发的所述侧行链路CSI报告。第一终端设备可以统一维护一个SL CSI报告，由此能够减少第一终端设备所维护的SL CSI报告的数量，简化第一终端设备的实现。
在一种可选的实施方式中，在第一侧行链路资源上发送侧行链路MAC CE之后，所述方法还包括：如果所述侧行链路MAC CE指示了被触发的全部侧行链路载波的侧行链路CSI报告，则取消被触发的SR。第一终端设备可以统一维护一个SR，由此能够减少第一终端设备所维护的SR的数量，简化第一终端设备的实现。
在一种可选的实施方式中，在第一侧行链路资源上发送侧行链路MAC CE之后，所述方法还包括：如果所述侧行链路MAC CE指示被触发的部分侧行链路载波的侧行链路CSI报告，不取消被触发的所述侧行链路CSI报告，以及不取消被触发的SR。由于第一终端设备统一维护了一个CSI报告和一个SR，因此如果还有SL载波的SL CSI报告未发送完毕或者未发送，则第一终端设备可以不取消被触发的该SL CSI报告，也不取消被触发的该SR，从而保证各个SL载波的SL CSI报告都能够得到发送。
在一种可选的实施方式中，所述侧行链路MAC CE为侧行链路CSI报告MAC CE。
第六方面，提供第六种通信方法，该方法可由终端设备执行，或由包括终端设备功能的其他设备执行，或由芯片系统(或，芯片)或其他功能模块执行，该芯片系统或功能模块能够实现终端设备的功能，该芯片系统或功能模块例如设置在终端设备中。该终端设备例如为第一终端设备。该方法包括：如果用于发送侧行链路MAC CE的侧行链路资源无法承载待发送的全部侧行链路载波的侧行链路CSI报告，从所述全部侧行链路载波的侧行链路CSI报告中确定部分侧行链路载波的侧行链路CSI报告；向第二终端设备发送所述侧行链路MAC CE，所述侧行链路MAC CE用于指示所述部分侧行链路载波的侧行链路CSI报告。本申请实施例中，如果SL资源无法承载待发送的全部SL载波的SL CSI报告，则第一UE可以采用多种方式确定部分SL载波的SL CSI报告，使得这部分SL载波的SL CSI报告能够得以发送，以减小SL CSI报告的传输时延。
在一种可选的实施方式中，所述部分侧行链路载波的侧行链路CSI报告满足如下一项或多项条件：所述部分侧行链路载波的优先级，高于或等于所述全部侧行链路载波中除了所述部分侧行链路载波外剩余侧行链路载波的优先级；或，所述部分侧行链路载波的侧行链路CSI报告对应的信道质量变化量，大于或等于所述全部侧行链路载波的侧行链路CSI报告中除了所述部分侧行链路载波的侧行链路CSI报告外剩余侧行链路载波的侧行链路CSI报告对应的信道质量变化量，其中，一个侧行链路载波的侧行链路CSI报告对应的信道质量变化量，是根据所述侧行链路载波当前的侧行链路CSI报告与上次的侧行链路CSI报告确定的；或，所述部分侧行链路载波的侧行链路CSI报告对应的信道质量，优于或等于所述全部侧行链路载波的侧行链路CSI报告中除了所述部分侧行链路载波的侧行链路CSI报告外剩余侧行链路载波的侧行链路CSI报告的信道质量；或，所述部分侧行链路载波的侧行链路CSI报告对应的信道质量信息索引，大于或等于所述全部侧行链路载波的侧行链路CSI报告中除了所述部分侧行链路载波的侧行链路CSI报告外剩余侧行链路载波的侧行链路CSI报告的对应的信道质量信息索引；或，所述部分侧行链路载波的侧行链路CSI报告对应的报告时延的剩余有效时长，小于或等于所述全 部侧行链路载波的侧行链路CSI报告中除了所述部分侧行链路载波的侧行链路CSI报告外剩余侧行链路载波的侧行链路CSI报告对应的报告时延的剩余有效时长；或，所述部分侧行链路载波的侧行链路CSI报告的触发时间，早于或等于所述全部侧行链路载波的侧行链路CSI报告中除了所述部分侧行链路载波的侧行链路CSI报告外剩余侧行链路载波的侧行链路CSI报告的触发时间；或，所述部分侧行链路载波中包括所述第一终端设备的主侧行链路载波；或，所述部分侧行链路载波是从所述全部侧行链路载波中随机选择的。本申请实施例提供了多种用于选择部分SL CSI报告的方式，且如上多种方式中的任意两种或更多种方式还可以结合应用，较为灵活。
在一种可选的实施方式中，用于发送侧行链路MAC CE的侧行链路资源无法承载待发送的全部侧行链路载波的侧行链路CSI报告，包括：所述侧行链路资源无法承载待发送的全部侧行链路载波的侧行链路MAC CE加上所述侧行链路MAC CE的子头。
在一种可选的实施方式中，所述侧行链路MAC CE为侧行链路CSI报告MAC CE。
第七方面，提供一种通信装置。所述通信装置可以为上述第一方面至第六方面中的任一方面所述的第一终端设备。所述通信装置具备上述第一终端设备的功能。所述通信装置例如为第一终端设备，或为包括第一终端设备的较大设备，或为第一终端设备中的功能模块，例如基带装置或芯片系统等。一种可选的实现方式中，所述通信装置包括基带装置和射频装置。另一种可选的实现方式中，所述通信装置包括处理单元(有时也称为处理模块)和收发单元(有时也称为收发模块)。收发单元能够实现发送功能和接收功能，在收发单元实现发送功能时，可称为发送单元(有时也称为发送模块)，在收发单元实现接收功能时，可称为接收单元(有时也称为接收模块)。发送单元和接收单元可以是同一个功能模块，该功能模块称为收发单元，该功能模块能实现发送功能和接收功能；或者，发送单元和接收单元可以是不同的功能模块，收发单元是对这些功能模块的统称。
在一种可选的实施方式中，所述收发单元(或，所述接收单元)，用于接收来自接入网设备的第一配置信息，所述第一配置信息包括侧行链路载波与SR配置之间的关联关系；所述处理单元，用于确定第一侧行链路载波的侧行链路CSI报告被触发，且所述第一侧行链路载波上没有用于发送第一侧行链路MAC CE的侧行链路资源；所述收发单元(或，所述发送单元)，用于向所述接入网设备发送第一SR，所述第一SR用于请求侧行链路资源，其中，所述第一侧行链路MAC CE用于指示所述第一侧行链路载波的侧行链路CSI报告，所述第一SR对应所述第一侧行链路载波关联的SR配置，或所述第一SR对应预先配置的SR配置。
在一种可选的实施方式中，所述收发单元(或，所述发送单元)，用于向第二终端设备发送侧行链路MAC CE，所述侧行链路MAC CE用于指示第一侧行链路载波的侧行链路CSI报告，所述侧行链路MAC CE包括N个比特，所述N个比特用于指示所述第一侧行链路载波，或所述N个比特不用于指示任何侧行链路载波，N为正整数。
在一种可选的实施方式中，所述收发单元(或，所述发送单元)，用于第一侧行链路载波的侧行链路CSI报告被触发，则在所述第一侧行链路载波的第一侧行链路资源上发送第一侧行链路MAC CE，所述第一侧行链路MAC CE用于指示所述第一侧行链路载波的侧行链路CSI报告；所述处理单元，用于取消被触发的所述第一侧行链路载波的侧行链路CSI报告。
在一种可选的实施方式中，所述收发单元(或，所述发送单元)，用于侧行链路CSI报告被触发，则在第一侧行链路资源上发送侧行链路MAC CE，所述侧行链路MAC CE用于指示至少一个侧行链路载波的侧行链路CSI报告；所述处理单元，用于如果所述侧行链路MAC CE指示了待发送的全部侧行链路载波的侧行链路CSI报告，则取消被触发的所述侧行链路CSI报告。
在一种可选的实施方式中，所述处理单元，用于如果用于发送侧行链路MAC CE的侧行链路资源无法承载待发送的全部侧行链路载波的侧行链路CSI报告，从所述全部侧行链路载波的侧行链路CSI报告中确定部分侧行链路载波的侧行链路CSI报告；所述收发单元(或，所述发送单元)，用于向第二终端设备发送所述侧行链路MAC CE，所述侧行链路MAC CE用于指示所述部分侧行链路载波的侧行链路CSI报告。
在一种可选的实施方式中，所述通信装置还包括存储单元(有时也称为存储模块)，所述处理单元用于与所述存储单元耦合，并执行所述存储单元中的程序或指令，使能所述通信装置执行上述第一方面至第六方面中的任一方面所述的第一终端设备的功能。
第八方面，提供一种通信装置。所述通信装置可以为上述第一方面至第六方面中的任一方面所述的 接入网设备。所述通信装置具备上述接入网设备的功能。所述通信装置例如为接入网设备，或为包括接入网设备的较大设备，或为接入网设备中的功能模块，例如基带装置或芯片系统等。一种可选的实现方式中，所述通信装置包括基带装置和射频装置。另一种可选的实现方式中，所述通信装置包括处理单元(有时也称为处理模块)和收发单元(有时也称为收发模块)。关于收发单元的实现方式可参考第七方面的介绍。
在一种可选的实施方式中，所述收发单元(或，所述发送单元)，用于向第一终端设备发送第一配置信息，所述第一配置信息包括侧行链路载波与调度请求SR配置之间的关联关系；所述收发单元(或，所述接收单元)，用于接收来自所述第一终端设备的第一SR，所述第一SR用于请求侧行链路资源，其中，所述第一SR对应第一侧行链路载波关联的SR配置，或所述第一SR对应预先配置的SR配置。
在一种可选的实施方式中，所述通信装置还包括存储单元(有时也称为存储模块)，所述处理单元用于与所述存储单元耦合，并执行所述存储单元中的程序或指令，使能所述通信装置执行上述第一方面至第六方面中的任一方面所述的接入网设备的功能。
第九方面，提供一种通信系统，包括第一终端设备以及接入网设备，其中，第一终端设备用于执行如第一方面至第六方面中任一方面所述的由第一终端设备执行的方法，接入网设备用于执行如第一方面至第六方面中任一方面所述的由接入网设备执行的方法。
第十方面，提供一种计算机可读存储介质，所述计算机可读存储介质用于存储计算机程序或指令，当其被运行时，使得上述各方面中第一终端设备或接入网设备所执行的方法被实现。
第十一方面，提供一种包含指令的计算机程序产品，当其在计算机上运行时，使得上述各方面所述的方法被实现。
第十二方面，提供一种芯片系统，包括处理器和接口，所述处理器用于从所述接口调用并运行指令，以使所述芯片系统实现上述各方面的方法。
附图说明
图1为本申请实施例应用的一种网络架构示意图；
图2为本申请实施例提供的第一种通信方法的流程图；
图3为本申请实施例提供的第二种通信方法的流程图；
图4为本申请实施例提供的第三种通信方法的流程图；
图5A和图5B为本申请实施例提供的SL MAC CE的两种实现方式的示意图；
图6为本申请实施例提供的第四种通信方法的流程图；
图7为本申请实施例提供的第五种通信方法的流程图；
图8为本申请实施例提供的一种装置的示意图；
图9为本申请实施例提供的又一种装置的示意图。
具体实施方式
为了使本申请实施例的目的、技术方案和优点更加清楚，下面将结合附图对本申请实施例作进一步地详细描述。
本申请实施例中，对于名词的数目，除非特别说明，表示“单数名词或复数名词”，即"一个或多个”。“至少一个”是指一个或者多个，“多个”是指两个或两个以上。“和/或”，描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B的情况，其中A,B可以是单数或者复数。字符“/”一般表示前后关联对象是一种“或”的关系。例如，A/B，表示：A或B。“以下至少一项(个)”或其类似表达，是指的这些项中的任意组合，包括单项(个)或复数项(个)的任意组合。例如，a,b,或c中的至少一项(个)，表示：a,b,c,a和b,a和c,b和c,或a和b和c，其中a,b,c可以是单个，也可以是多个。
本申请实施例提及“第一”、“第二”等序数词是用于对多个对象进行区分，不用于限定多个对象的大小、内容、顺序、时序、优先级或者重要程度等。另外，本申请所介绍的各个实施例中对于步骤的编号，只是为了区分不同的步骤，并不用于限定步骤之间的先后顺序。例如，S201可以发生在S202之前，或者可能发生在S202之后，或者也可能与S202同时发生。
以下，对本申请实施例中的部分用语或概念进行解释说明，以便于本领域技术人员理解。
本申请实施例中，终端设备是一种具有无线收发功能的设备，可以是固定设备，移动设备、手持设备(例如手机)、穿戴设备、车载设备，或内置于上述设备中的无线装置(例如，通信模块，调制解调器，或芯片系统等)。所述终端设备用于连接人，物，机器等，可广泛用于各种场景，例如包括但不限于以下场景：蜂窝通信、设备到设备通信(device-to-device，D2D)、V2X、机器到机器/机器类通信
(machine-to-machine/machine-type communications，M2M/MTC)、物联网(internet of things，IoT)、虚拟现实(virtual reality，VR)、增强现实(augmented reality，AR)、工业控制(industrial control)、无人驾驶(self driving)、远程医疗(remote medical)、智能电网(smart grid)、智能家具、智能办公、智能穿戴、智能交通，智慧城市(smart city)、无人机、机器人等场景的终端设备。所述终端设备有时可称为UE、终端、接入站、UE站、远方站、无线通信设备、或用户装置等等。为描述方便，本申请实施例中将终端设备以UE为例进行说明。
本申请实施例中的网络设备，例如包括接入网设备，和/或核心网设备。所述接入网设备为具有无线收发功能的设备，用于与所述终端设备进行通信。所述接入网设备包括但不限于基站(基站收发站点(base transceiver station，BTS)，Node B,eNodeB/eNB，或gNodeB/gNB)、收发点(transmission reception point，TRP)，第三代合作伙伴计划(3rd generation partnership project，3GPP)后续演进的基站，无线保真(wireless fidelity，Wi-Fi)系统中的接入节点，无线中继节点，无线回传节点等。所述基站可以是：宏基站，微基站，微微基站，小站，中继站等。多个基站可以支持同一种接入技术的网络，也可以支持不同接入技术的网络。基站可以包含一个或多个共站或非共站的传输接收点。所述接入网设备还可以是云无线接入网络(cloud radio access network，CRAN)场景下的无线控制器、集中单元(centralized unit，CU)，和/或分布单元(distributed unit，DU)。所述接入网设备还可以是服务器等。例如，车到一切(vehicle to everything，V2X)技术中的网络设备可以为路侧单元(road side unit，RSU)。以下对接入网设备以基站为例进行说明。基站可以与终端设备进行通信，也可以通过中继站与终端设备进行通信。终端设备可以与不同接入技术中的多个基站进行通信。所述核心网设备用于实现移动管理，数据处理，会话管理，策略和计费等功能。不同接入技术的系统中实现核心网功能的设备名称可以不同，本申请实施例并不对此进行限定。以第五代(the 5th generation，5G)移动通信系统为例，所述核心网设备包括：访问和移动管理功能(access and mobility management function，AMF)、会话管理功能(session management function，SMF)、策略控制功能(policy control function，PCF)或用户面功能(user plane function，UPF)等。
本申请实施例中，用于实现网络设备功能的通信装置可以是网络设备，也可以是能够支持网络设备实现该功能的装置，例如芯片系统，该装置可以被安装在网络设备中。在本申请实施例提供的技术方案中，以用于实现网络设备的功能的装置是网络设备为例，描述本申请实施例提供的技术方案。
SL CA，即在SL上，UE之间可以通过多于一个SL载波进行通信。例如UE可使用多于一个SL载波发送广播或组播消息，或UE可使用多于一个SL载波与另一个UE进行单播通信。不同的SL载波上可以发送不同的数据，从而能够增大SL上的数据速率。其中，数据速率是指数据传输速率，也可简称为数据率等。
本申请实施例提供的技术方案可以应用于第四代移动通信技术(the 4th generation，4G)系统中，例如长期演进(long term evolution，LTE)系统，或可以应用于5G系统中，例如NR系统，或者还可以应用于下一代移动通信系统或其他类似的通信系统，例如第六代移动通信技术(the 6th generation，4G)系统等，具体的不做限制。本申请实施例提供的技术方案可以应用于设备到设备(device-to-device，D2D)场景，例如NR-D2D场景等，或者可以应用于车到一切(vehicle to everything，V2X)场景，例如NR-V2X场景等。例如可应用于车联网，例如V2X等，或可用于智能驾驶、辅助驾驶、或智能网联车等领域。
可参考图1，为本申请实施例适用的一种通信网络架构。图1包括第一UE和第二UE，第一UE与第二UE之间可以通过多个SL载波通信。其中，第一UE可以向第二UE发送SL载波的SL CSI报告，在此之前，第二UE可以向第一UE发送指示，以指示第一UE发送SL载波的SL CSI报告。另外，图1还包括接入网设备，对于配置了侧行链路资源分配模式1(mode 1)的第一UE，如果没有可用于第一UE向第二UE发送SL CSI报告的SL资源，则第一UE可以向接入网设备申请SL资源，侧行链路资源分配模式1(mode 1)为接入网设备向UE分配SL资源的资源分配模式。其中，图1未画出第二UE与接入网设备的通信情况，第二UE与接入网设备之间可以通信，例如第二UE也处于该接入网设备的覆盖范围内；或者，第二UE与接入网设备也可以无法通信，例如第二UE处于该接入网设备的 覆盖范围外。
不同SL载波的数据可以映射到不同的逻辑信道(logical channel，LCH)，从而通过不同的SL载波发送。而对于SL上的控制信令，例如SL介质访问控制控制元素(sidelink medium access control control element，SL MAC CE)，在多SL载波场景下如何传输，本申请实施例提供如下两种方式。
1、传输方式一。
传输SL MAC CE需要考虑SL载波约束条件。在传输方式一下，SL MAC CE携带的是哪个SL载波的信息，就在该SL载波上传输该SL MAC CE。例如，用于包括SL CSI报告的MAC CE为SL-CSI reporting MAC CE(也即Sidelink CSI Reporting MAC CE)。如果一个SL-CSI reporting MAC CE包括(或，指示)的是SL载波X的SL CSI报告，则该SL-CSI reporting MAC CE可以在SL载波X上发送，SL载波X为UE之间一个或多个SL载波中的一个SL载波。对于接收端UE来说，如果在SL载波X上接收了SL-CSI-reporting MAC CE，就可以确定该SL-CSI reporting MAC CE包括(或，指示)的SL CSI报告是SL载波X的SL CSI报告。其中，如果有多个SL载波的SL CSI报告待发送，则可以通过多个SL-CSI reporting MAC CE分别发送，其中一个SL-CSI reporting MAC CE可包括(或，指示)一个SL载波的SL CSI报告。
2、传输方式二。
传输SL MAC CE不考虑SL载波约束条件。在传输方式二下，SL MAC CE可以在任意SL载波上传输。可选的，SL MAC CE可以包括SL载波信息，以指示该SL MAC CE携带的是哪个或哪些SL载波的信息。例如，SL-CSI reporting MAC CE包括(或，指示)了SL载波X的SL CSI报告，该SL-CSI reporting MAC CE可以在任意SL载波上发送，该SL-CSI reporting MAC CE可以包括SL载波信息(例如包括SL载波的索引(index)；或包括比特地图(bitmap)，该bitmap所包括的比特与发送端UE和接收端UE之间的SL载波一一对应，通过该bitmap所包括的比特的值可指示对应的SL载波)，以指示该SL-CSI reporting MAC CE携带了SL载波X的SL CSI报告，SL载波X为UE之间一个或多个SL载波中的一个SL载波。其中，如果有多个SL载波的SL CSI报告待发送，则可以通过一个SL-CSI reporting MAC CE来包括这多个SL载波的SL CSI报告。
为了更好地介绍本申请实施例，下面结合附图介绍本申请实施例所提供的方法。后文中如无特殊说明，则本申请的各个实施例对应的附图中，虚线表示的步骤均为可选的步骤。本申请的各个实施例所提供的方法均可应用于图1所示的网络架构，例如本申请的各个实施例提供的方法所涉及的第一UE可以是图1中的第一UE，本申请的各个实施例提供的方法所涉及的第二UE可以是图1中的第二UE，本申请的各个实施例提供的方法所涉及的接入网设备可以是图1中的接入网设备。
首先介绍本申请实施例提供的第一种通信方法，请参见图2，为该方法的流程图。其中，第一种通信方法可以适用于如上所介绍的SL MAC CE的传输方式一。
S201、接入网设备向第一UE发送第一配置信息。相应的，第一UE接收来自接入网设备的第一配置信息。例如第一配置信息包括在无线资源控制(radio resource control，RRC)重配置(reconfiguration)消息中，或者第一配置信息为RRC重配置消息。
第一配置信息可包括SL载波与SR配置之间的关联关系。第一配置信息所包括(或，指示)的SR配置，可以与SL MAC CE关联，例如根据该SR配置对应的SR所请求的SL资源可用于发送SL MAC CE；或者，第一配置信息所包括(或，指示)的SR配置，可以与SL CSI报告关联，例如根据该SR配置对应的SR所请求的SL资源可用于发送SL CSI报告，而SL CSI报告可以通过SL MAC CE发送。例如用于发送SL CSI报告的SL MAC CE可以是SL-CSI reporting MAC CE。
例如，第一配置信息可以包括至少一组关联关系，其中的一组关联关系为至少一个SL载波与一个SR配置之间的关联关系，不同组关联关系所对应的SL载波不同。
可选的，至少一组关联关系中的每组关联关系可包括一个SL载波与一个SR配置之间的关联关系。如果第一UE向接入网设备发送其中一组关联关系包括的SR配置对应的SR，则接入网设备就能确定该SR所唯一对应的SL载波，从而接入网设备能够为第一UE调度该SL载波上的SL资源，而不必调度过多的SL载波上的SL资源，由此减少了SL资源浪费的情况。
或者，至少一组关联关系中的每组关联关系可包括多个SL载波与一个SR配置之间的关联关系，不同组关联关系所包括的SL载波的数量可以相同或不同。在这种情况下，多个SL载波可以对应一个SR配置，由此能够节省SR配置。
或者，至少一组关联关系中包括一组关联关系A和一组关联关系B，关联关系A可包括一个SL载波与一个SR配置之间的关联关系，关联关系B可包括多个SL载波与一个SR配置之间的关联关系。也就是说，至少一组关联关系的实现方式是较为灵活的。
一个SR配置可以指示SR的时域资源和/或频域资源，可选的，SR配置还可以指示SR禁止定时器的时长和SR最大发送次数中的一个或多个，也就是说，第一UE根据一个SR配置可以确定并在对应的SR的时域资源和/或频域资源发送SR，不同的SR配置对应的SR的时域资源和/或频域资源不同。本申请实施例为SL载波与SR配置建立了关联关系，如果第一UE要向接入网设备请求某个SL载波上的SL资源，则第一UE可以使用该SL载波对应的SR配置来向接入网设备发送SR，接入网设备接收该SR之后就可以为第一UE分配对应的SL载波上的SL资源。
其中，一组关联关系为至少一个SL载波与一个SR配置之间的关联关系，如果至少一个SL载波的数量大于或等于2，那么如果第一UE向接入网设备发送该SR配置对应的SR，则接入网设备可以为第一UE分配至少一个SL载波中的每个SL载波上的SL资源，即，接入网设备可以为第一UE分配多个SL资源。此时，UE可能只在其中一个SL载波上发送SL CSI报告，则接入网设备所分配的其他SL载波上的SL资源可能被忽略。但这种方式能够节省SR配置，以及能够保证第一UE能够获得用于发送SL CSI报告的SL资源。而且相对于接入网设备在第一UE的所有SL载波上都分配SL资源的情况来说，这种方式也能够在一定程度上节省SL资源。
可选的，第一配置信息包括SL载波与SR配置之间的关联关系，一种方式为，第一配置信息包括SL载波与SR配置标识之间的关联关系，或者，另一种方式为，第一配置信息包括SL载波索引与SR配置标识之间的关联关系。其中，一个SL载波对应一个SL载波索引，一个SL载波索引指示一个SL载波。一个SR配置对应一个SR配置标识，一个SR配置标识指示一个SR配置。例如请参考表1，为多组关联关系的一种示例。
表1
表1包括4组关联关系，其中SL载波1和SL载波2均对应SR配置a，这视为一组关联关系，剩余的3行为3组关联关系。第一配置信息所配置的至少一组关联关系例如包括表1中的一组或多组关联关系，或者也可以不包括表1中的关联关系。
或者，第一配置信息包括SL载波与SR配置之间的关联关系，又一种方式为，第一配置信息可以包括SL载波索引。例如SR配置是第一UE已知的，且第一UE和接入网设备也都知晓多个SR配置的排列顺序，那么SL载波索引在第一配置信息中的顺序就与SR配置的顺序一一对应，相当于根据SL载波索引的顺序隐式指示了SL载波索引与SR配置标识的关联关系。例如SR配置的顺序为SR配置a、SR配置b、SR配置c、SR配置d，第一配置信息包括的SL载波索引的顺序为SL索引1、SL索引3、SL索引2、SL索引4，那么第一UE能够明确，SL载波1与SR配置a关联，SL载波2与SR配置c关联，SL载波3与SR配置b关联，SL载波4与SR配置d关联。或者，又例如，第一配置信息包括SR配置，SR配置信息中包含SL载波索引，表示该SR配置关联的SL载波。例如，SR配置a中包含了SL索引1、SR配置b中包含了SL索引3、SR配置c中包含了SL索引2、SR配置d中包含了SL索引4，那么第一UE能够明确，SL载波1与SR配置a关联，SL载波2与SR配置c关联，SL载波3与SR配置b关联，SL载波4与SR配置d关联。
或者，第一配置信息包括SL载波与SR配置之间的关联关系，再一种方式为，第一配置信息可以包括SR配置标识，SR配置标识在第一配置信息中的顺序与SL载波索引的顺序一一对应，相当于根据SR配置标识的顺序隐式指示了SL载波索引与SR配置标识的关联关系。SL载波索引例如为第一UE和接入网设备预先协商确定，或者也可以是默认顺序，例如为索引的值从小到大的顺序或从大到小的顺序。例如SL载波索引的顺序为SL载波索引1、SL载波索引2、SL载波索引3、SL载波索引4，第一 配置信息包括的SR配置标识的顺序为SR配置a、SR配置c、SR配置b、SR配置d，那么第一UE能够明确，SL载波1与SR配置a关联，SL载波2与SR配置c关联，SL载波3与SR配置b关联，SL载波4与SR配置d关联。或者，又例如，第一配置信息包括SL配置，SR配置信息中包含SL载波配置，表示该SL载波配置关联的SR配置。例如，SL载波1的SL载波配置1包含了SR配置标识a、SL载波2的SL载波配置2包含了SR配置标识c、SL载波3的SL载波配置3包含了SR配置标识b、SL载波4的SL载波配置4包含了SR配置标识d，那么第一UE能够明确，SL载波1与SR配置a关联，SL载波2与SR配置c关联，SL载波3与SR配置b关联，SL载波4与SR配置d关联。
第一配置信息可以包括(或，指示)至少一个SL载波(例如第一配置信息可包括SL载波索引)，可选的，第一配置信息所包括的SL载波，可以是第一UE被配置的全部SL载波，或者是第一UE被配置的部分SL载波。例如，接入网设备或第二UE可以预先为第一UE配置SL载波，第一配置信息可以包括这其中的全部或部分SL载波。如果是由接入网设备为第一UE配置SL载波，那么可选的，用于为第一UE配置SL载波的信息与第一配置信息可以是同一条信息，或者这两个信息可以包括在同一条消息中，例如包括在同一条RRC重配置消息中；或者，用于为第一UE配置SL载波的信息与第一配置信息也可以是不同的信息，或者这两个信息可以包括在不同的消息中。
或者，第一配置信息所包括的SL载波，可以是第一UE能够用于发送SL CSI报告的全部SL载波，或者是第一UE能够用于发送SL CSI报告的部分SL载波。第一UE被配置的SL载波中，可能全部能够用于发送SL CSI报告，或者也可能只有部分能够用于发送SL CSI报告，而剩余的部分不能用于发送SL CSI报告。第一配置信息配置SL载波与SR配置之间的关联关系，根据该SR配置对应的SR请求的SL资源可用于发送SL CSI报告，因此第一配置信息包括的SL载波可以是能够用于发送SL CSI报告的SL载波，使得第一配置信息能够生效。
或者，第一配置信息所包括的SL载波，可以是第一UE被使能了CSI获取(CSI-acquisition)功能的全部SL载波，或者是第一UE被使能了CSI获取功能的部分SL载波。如果一个SL载波被使能了CSI获取功能，表明该SL载波可用于发送SL CSI报告，反之，如果一个SL载波未被使能CSI获取功能，表明该SL载波不可用于发送SL CSI报告。其中，第一UE被使能了CSI获取功能的SL载波，可以是第一UE被配置的全部SL载波或部分SL载波。
例如，接入网设备可以向第一UE发送第二配置信息，第二配置信息可以指示哪些SL载波被使能了CSI获取功能。例如第二配置信息可以包括使能了CSI获取功能的SL载波的索引；或者，第二配置信息可以包括第一UE被配置的全部SL载波的索引，对于其中被使能了CSI获取功能的SL载波，第二配置信息还可以包括与该SL载波的SL载波索引对应的指示信息，该指示信息可指示使能了CSI获取功能，第一UE根据哪些SL载波索引有对应的指示信息，就能确定这些SL载波索引对应的SL载波被使能了CSI获取功能；或者，第二配置信息可以包括bitmap，该bitmap包括的比特与第一UE被配置的全部SL载波一一对应，如果其中一个比特的值为“1”，表明该比特对应的SL载波被使能了CSI获取功能，而如果其中一个比特的值为“0”，表明该比特对应的SL载波未被使能CSI获取功能；或者，第二配置信息可以包括SL载波配置信息，每个SL载波对应的SL载波配置信息包括了是否使能了CSI获取功能的指示信息，第一UE根据SL载波对应的SL配置信息，就能确定哪些SL载波被使能了CSI获取功能。例如，第二配置信息可以包括在RRC重配置消息中，或者第二配置信息可以是RRC重配置消息。可选的，第二配置信息与第一配置信息可以是同一条配置信息，或者可以包括在同一条消息中，例如包括在同一条RRC重配置消息中；或者，第一配置信息与第二配置信息也可以是不同的配置信息，或者可以包括在不同的消息中。
可能还有一些SL载波，第一配置信息并未配置这些SL载波与SR配置之间的关联关系。那么可选的，第一配置信息除了包括至少一组关联关系外，还可以包括预先配置的SR配置，该预先配置的SR配置也可以称为默认(default)SR配置或公共(common)SR配置等，对于名称不做限制。或者，该预先配置的SR配置也可以由协议预定义，则第一配置信息可以不必包括该预先配置的SR配置。该预先配置的SR配置可以适用于未关联SR配置的SL载波。例如第一UE被配置了SL载波1～SL载波4，其中的SL载波1～SL载波3均可用于发送SL CSI报告。例如第一配置信息配置了SL载波1与SR配置a的关联关系，以及配置了SL载波2与SR配置b的关联关系，但对于SL载波3，第一配置信息并未配置SL载波3与SR配置之间的关联关系，则可以认为SL载波3与预先配置的SR配置相关联。其中，预先配置的SR配置可以由接入网设备配置，例如第一配置信息可以包括该预先配置的SR配置； 或者，预先配置的SR配置可由协议预定义，不必由接入网设备配置。第一UE如果要向接入网设备申请SL载波3上的SL资源，则可以向接入网设备发送该预先配置的SR配置对应的SR，接入网设备根据该SR就可以为第一UE分配SL载波3上的SL资源。通过预先配置的SR配置，可以减少关联关系的数量，且可以使得第一UE的各个SL载波都能够得到SL资源分配。
S202、若第一SL载波的SL CSI报告被触发，且第一SL载波上没有用于发送第一SL MAC CE的SL资源，第一UE向接入网设备发送第一SR。相应的，接入网设备接收来自第一UE的第一SR。其中，第一SL MAC CE可包括第一SL载波的SL CSI报告。可选的，第一SL MAC CE例如为SL-CSI reporting MAC CE。第一SR可用于请求SL资源。
本申请的各个实施例中，一个SL载波上没有用于发送SL MAC CE的SL资源，可理解为，该SL载波上没有用于发送该SL MAC CE加上该SL MAC CE的子头(subheader)的SL资源，且该SL资源是用于新传的SL资源；或者理解为，该SL载波上没有用于发送该SL MAC CE加上该SL MAC CE的子头的用于新传的SL资源。例如，第一SL载波上没有用于发送第一SL MAC CE的SL资源，可理解为，第一SL载波上没有用于发送第一SL MAC CE加上第一SL MAC CE的子头的SL资源，且该SL资源是用于新传的SL资源；或者理解为，第一SL载波上没有用于发送第一SL MAC CE加上第一SL MAC CE的子头的用于新传的SL资源。
可选的，第一UE对于不同的SL载波(或者，不同的SL载波的SL CSI报告；或者，不同的SL MAC CE)可以分别维护SL CSI报告，或者说维护SL CSI报告状态。如果其他UE(例如第二UE)向第一UE发送侧行控制信息(sidelink control information，SCI)，该SCI用于触发某个SL载波的SL CSI报告，或者该SCL用于指示第一UE发送某个SL载波的SL CSI报告，则第一UE可以认为该SL载波的SL CSI报告(SL CSI reporting)被触发，或者，可将该SL载波的SL CSI报告状态设置为触发状态。在触发一个SL载波的SL CSI报告后，第一UE就可以在该SL载波上发送该SL载波的SL CSI报告，也即发送包括SL CSI报告的SL MAC CE。在该SL载波的CSI报告发送完毕后，第一UE可以取消被触发的该SL载波的SL CSI报告，或者，可将该SL载波的SL CSI报告状态设置为取消触发状态。
在一个SL载波的SL CSI报告被触发后，如果有能够用于发送SL MAC CE(该SL MAC CE包括(或，指示)该SL载波的SL CSI报告)的SL资源(例如该SL载波上有能够用于发送该SL MAC CE的SL资源)，则第一UE可以使用该SL资源发送该SL MAC CE；或者，在一个SL载波的SL CSI报告被触发后，如果没有能够用于发送该SL MAC CE的SL资源(例如该SL载波上没有能够用于发送该SL MAC CE的SL资源)，则第一UE可以触发SR。例如，第一UE对于不同的SL载波(或者，不同的SL载波的SL CSI报告；或者，不同的SL MAC CE)可以分别维护SR，或者说维护SR状态。如果第一UE要请求某个SL载波上的SL资源，则可以触发该SL载波对应的SR，或者将该SL载波对应的SR状态设置为触发状态。或者，如果第一UE要请求发送某个SL载波的SL CSI报告(或包括SL CSI报告的SL MAC CE)的SL资源，则可以触发该SL载波的SL CSI报告对应的SR，或者将该SL载波的SL CSI报告(或包括SL CSI报告的SL MAC CE)对应的SR状态设置为触发状态。在该SL载波的SL CSI报告发送完毕后，第一UE可以取消被触发的该SL载波的SL CSI报告，另外，第一UE还可以取消被触发的该SL载波的SR，或者，将该SL载波的SR状态设置为取消触发状态，或者，第一UE还可以取消被触发的该SL载波的SL CSI报告(或包括SL CSI报告的SL MAC CE)对应的SR，或者，将该SL载波的SL CSI报告(或包括SL CSI报告的SL MAC CE)对应的SR状态设置为取消触发状态。
或者，第一UE可以统一维护一个SR，或者说维护一个SR状态，该SR状态可以对应于第一UE被配置的全部SL载波，或者对应于第一UE被使能了CSI获取功能的全部载波，或者对应于第一UE能够用于发送SL CSI报告的全部载波。如果第一UE要请求任一个或多个SL载波上的SL资源，那么如果该SR已被触发(或者该SR状态已被设置为触发状态)，则第一UE可以保持该SR的触发状态，或者如果该SR未被触发(或者该SR状态未被设置为触发状态，或者该SR状态为取消触发状态)，则第一UE可以触发该SR，或者将该SR状态设置为触发状态。在待发送的所有SL载波的SL CSI报告均发送完毕后，第一UE除了可以取消相应载波的CSI报告外，还可以取消被触发的该SR，或者将该SR状态设置为取消触发状态。而如果还有待发送的SL载波的SL CSI报告尚未发送，则第一UE都会保持该SR的触发状态。
根据前述介绍可知，当第一SL载波的SL CSI报告被触发时，如果第一SL载波上没有用于发送第一SL MAC CE的SL资源，则第一UE可以触发第一SL载波(或第一SL载波的SL CSI报告；或者， 第一SL MAC CE)对应的SR，或者触发SR。在触发相应的SR后，第一UE可以向接入网设备发送第一SR。
例如第一配置信息配置了第一SL载波与该SR配置之间的关联关系，则第一SR可以是第一SL载波关联的SR配置对应的SR，接入网设备根据第一SR就能够确定第一UE是要请求第一SL载波上的SL资源。或者，第一配置信息配置了该至少一个SL载波与该SR配置之间的关联关系，第一SL载波是至少一个SL载波中的一个，则第一SR可以是这至少一个SL载波关联的SR配置对应的SR，接入网设备根据第一SR能够确定第一UE是要请求这至少一个SL载波上的SL资源。或者，第一配置信息并未配置第一SL载波与任意SR配置之间的关联关系，则第一SR可以是预先配置的SR配置所对应的SR，接入网设备根据第一SL能够确定第一UE是要请求与SR配置没有关联关系的SL载波上的SL资源，第一SL载波例如为与SR配置没有关联关系的其中一个SL载波。
可选的，本申请实施例的方法还可以包括S203和S204。
S203、接入网设备向第一UE发送用于指示第一SL资源的信息。相应的，第一UE接收来自接入网设备的该信息。第一SL资源例如为第一SL载波上的SL资源。
例如第一SR是第一SL载波关联的SR配置对应的SR，则接入网设备根据第一SR就能够确定第一UE是要请求第一SL载波上的SL资源，因此接入网设备可以为第一UE分配第一SL资源。
或者，第一SR是至少一个SL载波关联的SR配置对应的SR，接入网设备根据第一SR能够确定第一UE是要请求这至少一个SL载波上的SL资源，因此接入网设备可以为第一UE分配至少一个SL资源，至少一个SL资源与至少一个SL载波一一对应，例如至少一个SL载波包括SL载波1和SL载波2，则接入网设备可以为UE分配SL载波1上的SL资源，以及分配SL载波2上的SL资源。在这种情况下，接入网设备可以向第一UE发送用于指示至少一个SL资源的信息，第一SL资源例如为至少一个SL资源中的一个SL资源，第一SL资源例如为第一SL载波上的SL资源。
或者，第一SR是预先配置的SR配置所对应的SR，接入网设备根据第一SL能够确定第一UE是要请求与SR配置没有关联关系的SL载波上的SL资源。例如与SR配置没有关联关系的SL载波有至少一个，第一SL载波是这至少一个SL载波中的一个SL载波。则接入网设备可以为第一UE分配至少一个SL资源，至少一个SL资源与这至少一个SL载波一一对应，例如至少一个SL载波包括SL载波3和SL载波4，则接入网设备可以为UE分配SL载波3上的SL资源，以及分配SL载波4上的SL资源。在这种情况下，接入网设备可以向第一UE发送用于指示至少一个SL资源的信息，第一SL资源例如为至少一个SL资源中的一个SL资源，第一SL资源例如为第一SL载波上的SL资源。
S204、第一UE通过第一SL资源向第二UE发送第一SL MAC CE。相应的，第二UE通过第一SL资源接收来自第一UE的第一SL MAC CE。
如果接入网设备只是为第一UE分配了第一SL资源，则第一UE通过第一SL资源向第二UE发送第一SL MAC CE即可。或者，如果接入网设备为第一UE分配了至少一个SL资源，第一SL资源是其中的一个SL资源，那么第一UE可以利用第一SL资源向第二UE发送第一SL MAC CE，而对于接入网设备分配的其他SL资源，第一UE可以忽略。对于第二UE来说，如果在第一SL资源上接收了第一SL MAC CE，由于第一SL资源是第一SL载波上的SL资源，因此第二UE能够确定第一SL MAC CE包括(或，指示)的SL CSI报告是第一SL载波的SL CSI报告。
本申请实施例中，可以为SR配置与SL载波配置关联关系，因此第一UE在申请某个SL载波上的SL资源时，通过与该SL载波关联的SR配置对应的SR就能够申请该SL载波上的资源，使得接入网设备能够为第一UE分配合适的SL载波上的SL资源，从而各个SL载波上的SL CSI报告都能够得到发送，能够减少SL资源的浪费，也能减小SL CSI报告的传输时延。而且如果第一UE在第一SL载波的SL资源上向第二UE发送SL MAC CE，就能够表明该SL MAC CE所包括的SL CSI报告是第一SL的SL CSI报告，使得第二UE能够明确接收的究竟是哪个SL载波的SL CSI报告，而不会混淆不同SL载波的SL CSI报告。且这种方式也不必在SL MAC CE中添加额外的指示信息来指示SL CSI报告对应的SL载波，能够节省信令开销。
下面介绍本申请实施例提供的第二种通信方法，请参见图3，为该方法的流程图。其中，第二种通信方法可以适用于如上所介绍的SL MAC CE的传输方式一。
S301、第一SL载波的SL CSI报告(SL CSI reporting)被触发，第一UE在第一SL载波的第一SL资源上向第二UE发送第一SL MAC CE。相应的，第二UE在第一SL资源上接收来自第一UE的第一 SL MAC CE。第一SL MAC CE可以包括(或，指示)第一SL载波的SL CSI报告，可选的，第一SL MAC CE例如为SL-CSI reporting MAC CE。
第一UE对于不同的SL载波(或者，不同的SL载波的SL CSI报告；或者，不同的SL MAC CE)可以分别维护SL CSI报告，或者说维护SL CSI报告状态。如果其他UE(例如第二UE)向第一UE发送SCI，该SCI用于触发某个SL载波的SL CSI报告，或者该SCL用于指示第一UE发送某个SL载波的SL CSI报告，则第一UE可以认为该SL载波的SL CSI报告被触发，或者，可将该SL载波的SL CSI报告状态设置为触发状态。例如第二UE向第一UE发送了SCI，该SCI用于触发第一SL载波的SL CSI报告，则第一UE可以认为第一SL载波的SL CSI报告被触发。在触发一个SL载波的SL CSI报告后，第一UE就可以在该SL载波上发送该SL载波的SL CSI报告。
其中，在第一SL载波的SL CSI报告被触发后，如果有能够用于发送第一SL MAC CE的SL资源(例如第一SL载波上有能够用于发送第一SL MAC CE的SL资源)，则第一UE可以使用该SL资源发送第一SL MAC CE，例如该SL资源为第一SL资源。
或者，在第一SL载波的SL CSI报告被触发后，如果没有能够用于发送第一SL MAC CE的SL资源(例如第一SL载波上没有能够用于发送第一SL MAC CE的SL资源)，则第一UE可以触发SR。例如，第一UE对于不同的SL载波(或者，不同的SL载波的SL CSI报告；或者，不同的SL MAC CE)可以分别维护SR，或者说维护SR状态。如果第一UE要请求某个SL载波上的SL资源，则可以触发该SL载波对应的SR，或者将该SL载波对应的SR状态设置为触发状态。例如第一UE要请求第一SL载波上的SL资源，则可以触发第一SL载波对应的SR，或者将第一SL载波对应的SR状态设置为触发状态。或者，例如第一UE要请求发送第一SL载波的SL CSI报告的SL资源，则可以触发第一SL载波的SL CSI报告对应的SR，或者将第一SL载波的SL CSI报告对应的SR状态设置为触发状态。又例如，第一UE可以统一维护一个SR，或者说维护一个SR状态，该SR状态可以对应于第一UE被配置的全部SL载波，或者对应于第一UE被使能了CSI获取功能的全部载波，或者对应于第一UE能够用于发送SL CSI报告的全部载波。如果第一UE要请求任一个或多个SL载波上的SL资源，那么如果SR已被触发(或者SR状态已被设置为触发状态)，则第一UE可以保持该SR的触发状态，或者如果SR未被触发(或者SR状态未被设置为触发状态)，则第一UE可以触发SR，或者将SR状态设置为触发状态。
在第一UE的SR(第一UE的各个SL载波共用的SR)被触发后或第一UE的第一SL载波的SR被触发后，第一UE可以向接入网设备发送SR。例如，第一UE可以向接入网设备发送第一SL载波关联的SR配置所对应的SR；或者，有至少一个SL载波与同一个SR配置关联，第一SL载波是这至少一个SL载波中的一个，则第一UE可以向接入网设备发送这至少一个SL载波关联的SR配置所对应的SR；或者，第一SL载波并未与SR配置关联，则第一UE可以向接入网设备发送预先配置的SR配置所对应的SR。接入网设备接收来自第一UE的SR后，可以为第一UE分配该SR对应的SR配置所关联的SL载波上的SL资源。例如该SR配置唯一关联第一SL载波，则接入网设备可以为第一UE分配第一SL载波上的SL资源，例如分配了第一SL资源；或者，该SR配置关联至少一个SL载波，则接入网设备可以为第一UE分配至少一个SL资源，至少一个SL资源属于至少一个SL载波，第一SL资源是这至少一个SL资源中属于第一SL载波的SL资源。关于这部分内容，可参考图2所示的实施例的介绍。
第一UE获得了第一SL资源后，就可以利用第一SL资源向第二UE发送第一SL MAC CE。
S302、第一UE取消被触发的第一SL载波的SL CSI报告。
在第一SL MAC CE发送完毕后，第一UE可以取消被触发的第一SL载波的SL CSI报告，或者，可将第一SL载波的SL CSI报告状态设置为取消触发状态。可选的，第一UE可以保持其他SL载波的SL CSI报告不变，或者说，保持其他SL载波的SL CSI报告状态不变。例如，如果除了第一SL载波的SL CSI报告被触发外，还有其他SL载波的SL CSI报告被触发，那么在第一SL MAC CE发送完毕后，第一UE可以取消被触发的第一SL载波的SL CSI报告，但不取消被触发的其他SL载波的SL CSI报告，从而不会影响其他SL载波的SL CSI报告的发送。
可选的，如果第一UE对于不同的SL载波(或者，不同的SL载波的SL CSI报告；或者，不同的SL MAC CE)分别维护了SR，那么在第一SL MAC CE发送完毕后，第一UE除了可以取消被触发的第一SL载波的SL CSI报告之外，还可以取消被触发的该SL载波的SR，或者，将该SL载波的SR状 态设置为取消触发状态。另外，第一UE可以保持其他SL载波的SR不变，或者说，保持其他SL载波的SR状态不变。例如，如果除了第一SL载波的SR被触发外，还有其他SL载波的SR被触发，那么在第一SL MAC CE发送完毕后，第一UE可以取消被触发的第一SL载波的SR，但不取消被触发的其他SL载波的SR，从而不会影响其他SL载波的SR的发送。或者，例如，如果除了第一SL载波的SL CSI报告对应的SR被触发外，还有其他SL载波的SL CSI报告对应的SR被触发，那么在第一SL MAC CE发送完毕后，第一UE可以取消被触发的第一SL载波的SL CSI报告对应的SR，但不取消被触发的其他SL载波的SL CSI报告对应的SR，从而不会影响其他SL载波的SL CSI报告对应的SR的发送。
或者，如果第一UE统一维护了一个SR，那么在待发送的所有SL载波的SL CSI报告均发送完毕后，第一UE除了可以取消相应载波的CSI报告外，还可以取消被触发的该SR，或者将该SR状态设置为取消触发状态。而如果还有待发送的SL载波的SL CSI报告尚未发送，则第一UE都会保持该SR的触发状态。例如，在第一SL MAC CE发送完毕后，如果除了第一SL载波的SL CSI报告被触发外没有其他SL载波的SL CSI报告被触发，则第一UE可以取消被触发的该SR，否则，如果除了第一SL载波的SL CSI报告被触发外还有其他SL载波的SL CSI报告被触发，则第一UE不取消被触发的该SR。又例如，如果第一SL MAC CE包括(或，指示)了被触发的全部SL载波的SL CSI报告，则在第一SL MAC CE发送完毕后，第一UE可以取消被触发的该SR，否则，如果第一SL MAC CE包括(或，指示)了被触发的部分SL载波的SL CSI报告，而还有剩余SL载波的SL CSI报告未发送，则在第一SL MAC CE发送完毕后，第一UE不取消被触发的该SR。
通过本申请实施例提供的技术方案，提供了UE维护SL CSI报告状态和SR状态的方式，即使在多SL载波的场景下，UE也能够正确维护SL CSI报告状态和SR状态，使得不同的SL载波之间的传输不会彼此干扰，有助于提高传输效率和准确性。
下面介绍本申请实施例提供的第三种通信方法，请参见图4，为该方法的流程图。其中，第三种通信方法可以适用于如上所介绍的SL MAC CE的传输方式二。
S401、第一UE向第二UE发送SL MAC CE。相应的，第二UE接收来自第一UE的该SL MAC CE。
该SL MAC CE可以包括(或，指示)第一SL载波的信息，例如第一SL载波的信息为第一SL载波的SL CSI报告，或者也可以是第一载波的其他信息。以第一SL载波的信息为第一SL载波的SL CSI报告为例，可选的，该SL MAC CE例如为SL-CSI reporting MAC CE。
在传输方式二下，传输SL MAC CE不考虑SL载波约束条件，因此该SL MAC CE可以在任意SL载波上传输。本申请实施例中，该SL MAC CE可以包括N个比特，N为正整数。
根据情况的不同，这N个比特可以有不同的实现方式。例如这N个比特的一种实现方式为，这N个比特可指示该SL MAC CE包括的信息所对应的SL载波，例如通过这N个比特的值可以指示该SL MAC CE包括的信息所对应的SL载波的索引。本申请实施例可以不改变该SL MAC CE的格式，例如现有的SL MAC CE包括8个比特，其中的3个比特为预留(reserved)比特，那么N可以小于或等于3，相当于可以利用SL MAC CE中的预留比特指示该SL MAC CE包括的信息所对应的SL载波。或者，本申请实施例也可以改变该SL MAC CE的格式，例如可在现有的SL MAC CE中增加新的比特，则N个比特可以包括预留比特和/或新增比特，N可以小于或等于3，也可以大于3。因为该SL MAC CE包括(或，指示)第一SL载波的信息，因此这N个比特可指示第一SL载波，使得第二UE根据该N个比特能够确定该SL MAC CE包括的是第一SL载波的信息。例如参考图5B，为该SL MAC CE的一种实现方式的示例，图5B以N＝3为例，这3个比特原本为该SL MAC CE中的预留比特，相当于图5B所示的SL MAC CE的格式相对于图5A所示的现有的SL MAC CE的格式来说并未改变，只是重新定义了原本的预留比特的含义。图5B中，3个比特的值为“001”，即，这3个比特指示SL载波索引为“1”，表明该SL MAC CE包括的是SL载波1的信息。
又例如，这N个比特的另一种实现方式为，该N个比特为预留比特，此时该N个比特并不指示任何SL载波。在这种情况下，N可以等于3，即，可以不必改变SL MAC CE的格式。例如参考图5A，为该SL MAC CE的一种实现方式的示例，图5A以N＝3为例，这3个比特为该SL MAC CE中的预留比特，相当于图5A所示的SL MAC CE的格式就是现有的SL MAC CE的格式，原本的预留比特的含义也并未改变。
究竟这N个比特采用哪种实现方式，第一UE可以根据相应的条件来确定。
作为一种可选的实施方式，如果第一UE有多于一个SL载波被配置了SL CSI参考信号，那么第一 UE可能通过一个SL MAC CE发送多个SL载波的SL CSI报告，因此这N个比特可指示该SL MAC CE包括(或，指示)的信息所对应的SL载波，例如指示第一SL载波。或者，如果第一UE仅有一个SL载波被配置了SL CSI参考信号，则第一UE通过一个SL MAC CE可能只发送该SL载波的SL CSI报告，因此该SL MAC CE可以不必指示该SL CSI报告对应的SL载波，则这N个比特可以不指示任何SL载波，而是作为预留比特。例如，接入网设备可以向第一UE发送第三配置信息，第三配置信息可以为第一UE的相应SL载波配置SL CSI参考信号。被配置SL CSI参考信号的SL载波，可以是第一UE被配置的全部SL载波，或者是第一UE被配置的部分SL载波。例如，被配置SL CSI参考信号的SL载波，可以是第一UE被使能了CSI获取功能的SL载波，或者是第一UE能够用于发送SL CSI报告的SL载波。例如，第三配置信息可以包括在RRC重配置消息中，或者第三配置信息可以是RRC重配置消息。可选的，第三配置信息与图2所示的实施例所述的第二配置信息可以是同一配置信息，例如，第二配置信息对于某个SL载波使能了CSI获取功能，则该第二配置信息可以一并为该SL载波配置SL CSI参考信号。
其中，一个SL载波被配置的SL CSI参考信号可用于得到该SL载波的SL CSI报告。例如第一UE的一个SL载波被配置了SL CSI参考信号，则其他UE可以按照该配置在该SL载波上向第一UE发送SL参考信号，第一UE对该SL参考信号进行测量，可以得到该SL载波的SL CSI报告。可选的，SL参考信号例如包括侧行链路同步信号和物理广播信道(physical broadcast channel，PBCH)块(sidelink synchronization signal and PBCH block，S-SSB)，或者包括其他的SL参考信号。
作为另一种可选的实施方式，如果第一UE有多于一个SL载波被使能了CSI获取功能，那么第一UE可能通过一个SL MAC CE发送多个SL载波的SL CSI报告，因此这N个比特可指示该SL MAC CE包括(或，指示)的信息所对应的SL载波，例如指示第一SL载波。或者，如果第一UE仅有一个SL载波被使能了CSI获取功能，则第一UE通过一个SL MAC CE可能只发送该SL载波的SL CSI报告，因此该SL MAC CE可以不必指示该SL CSI报告对应的SL载波，则这N个比特可以不指示任何SL载波，而是作为预留比特。关于SL被使能CSI获取功能的相关内容，可参考图2所示的实施例的介绍。
作为又一种可选的实施方式，如果第一UE被配置了多于一个SL载波，那么第一UE可能通过一个SL MAC CE发送多个SL载波的SL CSI报告，因此这N个比特可指示该SL MAC CE包括(或，指示)的信息所对应的SL载波，例如指示第一SL载波。或者，如果第一UE仅被配置了一个SL载波，则第一UE通过一个SL MAC CE可能只发送该SL载波的SL CSI报告，因此该SL MAC CE可以不必指示该SL CSI报告对应的SL载波，则这N个比特可以不指示任何SL载波，而是作为预留比特。
或者，第一UE还可以采用其他方式来确定N个比特的实现方式，具体不做限制。对于第二UE来说，也可以采用与第一UE相同的方式来确定N个比特的实现方式，使得第一UE与第二UE对于N个比特的理解一致，以达到正确传输的效果。
本申请实施例中，在多SL载波的情况下，SL CSI报告的传输可以不考虑载波约束条件，例如一个SL MAC CE可指示多个SL载波的SL CSI报告，由此能够节省传输开销。另外，SL MAC CE包括的N个比特还可以指示该SL MAC CE指示的信息所对应的SL载波，使得第二UE能够明确该SL MAC CE指示的信息对应的载波，提高信息传输的准确率。
下面介绍本申请实施例提供的第四种通信方法，请参见图6，为该方法的流程图。其中，第四种通信方法可以适用于如上所介绍的SL MAC CE的传输方式二。
S601、SL CSI报告被触发，第一UE在第一SL资源上向第二UE发送SL MAC CE。相应的，第二UE在第一SL资源上接收来自第一UE的该SL MAC CE。该SL MAC CE可以包括(或，指示)至少一个SL载波的SL CSI报告，可选的，该SL MAC CE例如为SL-CSI reporting MAC CE。第一SL资源例如为第一SL载波上的SL资源，第一SL载波可以是至少一个SL载波中的一个SL载波，或者也可以不属于至少一个SL载波。
因为在传输方式二下，SL CSI报告的传输可以不考虑载波约束条件，因此第一UE也可以统一维护一个SL CSI报告，或者说维护一个SL CSI报告状态，该SL CSI报告状态可以对应于第一UE被配置的全部SL载波，或者对应于第一UE被使能了CSI获取功能的全部载波，或者对应于第一UE能够用于发送SL CSI报告的全部载波。例如，其他UE(例如第二UE)向第一UE发送SCI，该SCI用于触发至少一个SL载波的SL CSI报告，或者该SCI用于指示第一UE发送至少一个SL载波的SL CSI报告，那么，如果该SL CSI报告未被触发(或者该SL CSI报告状态未被设置为触发状态，或者该SL CSI 报告状态为取消触发状态)，则第一UE可以触发该SL CSI报告，或者，可将该SL CSI报告状态设置为触发状态；或者，如果该SL CSI报告已被触发，或者，该SL CSI报告状态处于触发状态，则第一UE可以保持该SL CSI报告状态不变。在触发该SL CSI报告后，或者在确定该SL CSI报告被触发后，第一UE就可以发送至少一个SL载波的SL CSI报告。
或者，第一UE对于不同的SL载波(或者，不同的SL载波的SL CSI报告；或者，不同的SL MAC CE)可以分别维护SL CSI报告，或者说维护SL CSI报告状态。在这种情况下，S601也可以替换为：至少一个SL载波的SL CSI报告被触发，第一UE在第一SL资源上向第二UE发送SL MAC CE。相应的，第二UE在第一SL资源上接收来自第一UE的该SL MAC CE。例如，如果其他UE(例如第二UE)向第一UE发送SCI，该SCI用于触发某个SL载波的SL CSI报告，或者该SCL用于指示第一UE发送某个SL载波的SL CSI报告，则第一UE可以触发该SL载波的SL CSI报告，或者，可将该SL载波的SL CSI报告状态设置为触发状态。例如第二UE向第一UE发送了SCI，该SCI用于调度至少一个SL载波的SL CSI报告，则第一UE可以触发至少一个SL载波的SL CSI报告，即，第一UE可以触发至少一个SL CSI报告。在触发至少一个SL载波的SL CSI报告后，第一UE就可以发送至少一个SL载波的SL CSI报告。
其中，在统一维护的SL CSI报告或至少一个SL载波的SL CSI报告被触发后，如果有能够用于发送全部SL MAC CE的SL资源(例如任意SL载波上有能够用于发送全部SL MAC CE的SL资源)，则第一UE可以使用该SL资源发送全部SL MAC CE，例如该SL资源为第一SL资源。需要说明的是，如果有多个SL载波的SL CSI报告被触发，如果仅有能够用于发送其中部分SL MAC CE的SL资源(例如任意SL载波上有能够用于发送其中部分SL MAC CE的SL资源)，则第一UE可以使用该SL资源发送该部分SL MAC CE，例如该SL资源为第一SL资源。
或者，在统一维护的SL CSI报告或至少一个SL载波的SL CSI报告被触发后，如果没有能够用于发送全部SL MAC CE的SL资源(例如任意SL载波上都没有能够用于发送全部SL MAC CE的SL资源)，例如，没有SL资源或者已有的SL资源只能够用于发送其中部分SL MAC CE，则第一UE可以触发SR。例如，第一UE可以统一维护一个SR，或者说维护一个SR状态，该SR状态可以对应于第一UE被配置的全部SL载波，或者对应于第一UE被使能了CSI获取功能的全部载波，或者对应于第一UE能够用于发送SL CSI报告的全部载波。如果第一UE要请求任一个或多个SL载波上的SL资源，那么如果该SR已被触发(或者该SR状态已被设置为触发状态)，则第一UE可以保持该SR的触发状态，或者如果该SR未被触发(或者该SR状态未被设置为触发状态，或者该SR状态为取消触发状态)，则第一UE可以触发该SR，或者将该SR状态设置为触发状态。
在触发该SR后，第一UE可以向接入网设备发送SR。接入网设备接收该SR后，可以为第一UE分配SL资源，例如分配了第一SL资源。第一UE获得了第一SL资源后，就可以利用第一SL资源向第二UE发送该SL MAC CE。
可选的，该SL MAC CE可以包括N个比特，这N个比特例如指示至少一个SL载波，或者也可以作为预留比特。关于这N个比特的实现方式，以及何种情况下可以采用何种实现方式等内容，均可参考图4所示的实施例的介绍。
S602、如果该SL MAC CE包括(或，指示)了待发送的全部SL载波的SL CSI报告，第一UE取消被触发的SL CSI报告。
例如，第一UE统一维护了一个SL CSI报告，那么，如果该SL MAC CE包括(或，指示)了待发送的全部SL载波的SL CSI报告，则在该SL MAC CE发送完毕后如果没有SL载波的SL CSI报告待发送，则第一UE可以取消被触发的该SL CSI报告，或者，可将该SL CSI报告状态设置为取消触发状态。或者，如果该SL MAC CE包括(或，指示)了待发送的部分SL载波的SL CSI报告，则在该SL MAC CE发送完毕后如果还有剩余SL载波的SL CSI报告待发送，则第一UE可以不取消被触发的该SL CSI报告，或者，不将该SL CSI报告状态设置为取消触发状态，而是保持该SL CSI报告为触发状态。
或者，第一UE也可以针对不同的SL载波(或者，不同的SL载波的SL CSI报告；或者，不同的SL MAC CE)分别维护SL CSI报告，则S602可以替换为：第一UE取消被触发的至少一个SL载波的SL CSI报告。也就是说，在该SL MAC CE发送完毕后，第一UE可以取消被触发的至少一个SL载波的SL CSI报告，或者，可将至少一个SL载波的SL CSI报告状态设置为取消触发状态。可选的，第一UE可以保持其他SL载波的SL CSI报告不变，或者说，保持其他SL载波的SL CSI报告状态不变。例 如，如果除了至少一个SL载波的SL CSI报告被触发外，还有其他SL载波的SL CSI报告被触发，那么在该SL MAC CE发送完毕后，第一UE可以取消被触发的至少一个SL载波的SL CSI报告，但不取消被触发的其他SL载波的SL CSI报告，从而不会影响其他SL载波的SL CSI报告的发送。
可选的，如果第一UE还触发了SR(例如根据S601的介绍，第一UE可以通过触发SR获得第一SL资源)，那么，如果该SL MAC CE包括(或，指示)了待发送的全部SL载波的SL CSI报告，则在该SL MAC CE发送完毕后如果没有SL载波的SL CSI报告待发送，则第一UE可以取消被触发的该SR(或者，可将该SR状态设置为取消触发状态)。或者，如果该SL MAC CE包括(或，指示)了待发送的部分SL载波的SL CSI报告，则在该SL MAC CE发送完毕后如果还有剩余SL载波的SL CSI报告待发送，则第一UE可以不取消被触发的该SR，或者，不将该SR状态设置为取消触发状态，而是保持该SR为触发状态。
通过本申请实施例提供的技术方案，提供了UE维护SL CSI报告状态和SR状态的方式，即使在多SL载波的场景下，UE也能够正确维护SL CSI报告状态和SR状态，使得不同的SL载波之间的传输不会彼此干扰，有助于提高传输效率和准确性。而且由于SL CSI报告的传输可以不考虑载波约束条件，因此UE可以统一维护一个SL CSI报告和一个SR，能够减少UE维护的状态数量，简化UE的实现。
下面介绍本申请实施例提供的第五种通信方法，请参见图7，为该方法的流程图。其中，第五种通信方法也可以适用于如上所介绍的SL MAC CE的传输方式二。
S701、如果用于发送SL MAC CE的SL资源无法承载待发送的全部SL载波的SL CSI报告，第一UE从所述全部SL载波的SL CSI报告中确定部分SL载波的SL CSI报告。可选的，该SL MAC CE例如为SL-CSI reporting MAC CE。
例如，待发送的SL CSI报告对应的全部SL载波的数量为K，第一UE所确定的部分SL载波的数量为F，即，用于发送SL MAC CE的SL资源无法承载待发送的K个SL载波的SL CSI报告，第一UE从全部SL载波的SL CSI报告中确定F个SL载波的SL CSI报告。其中，K为正整数，F为小于或等于K的正整数。
可选的，该SL MAC CE可以包括N个比特，这N个比特例如指示所述部分SL载波，或者也可以作为预留比特。关于这N个比特的实现方式，以及何种情况下可以采用何种实现方式等内容，均可参考图4所示的实施例的介绍。
其中，如果SL资源无法承载待发送的全部SL载波的SL CSI报告，表明该SL MAC CE无法承载待发送的全部SL载波的SL CSI报告；或者，表明该SL资源无法承载该SL MAC CE以及该MAC CE的子头，且该SL资源用于新传，其中该SL MAC CE包括全部SL载波的SL CSI报告；或者，表明该SL资源无法承载全部SL载波的SL CSI报告对应的MAC CE以及对应的MAC CE的子头，且该SL资源用于新传。在这种情况下，第一UE可以从全部SL载波的SL CSI报告中确定部分SL载波的SL CSI报告，该SL MAC CE可承载这部分SL载波的SL CSI报告，使得该SL资源能够承载该SL MAC CE，或者，使得该SL资源能够承载该SL MAC CE以及该SL MAC CE的子头。例如，在该SL MAC CE承载F个SL载波的SL CSI报告后，该SL资源能够发送该SL MAC CE；但如果该SL MAC CE再多承载任一个SL载波的SL CSI报告(即，该SL MAC CE承载F+1个SL载波的SL CSI报告)，则该SL资源无法发送该SL MAC CE，或者该SL资源无法发送该SL MAC CE以及该SL MAC CE的子头。或者，第一UE可以从全部SL载波的SL CSI报告中确定部分SL载波的SL CSI报告，该SL资源可承载这部分SL载波的SL CSI报告对应的MAC CE，或者，该SL资源能够承载这部分SL载波的SL CSI报告对应的MAC CE以及对应的SL MAC CE的子头。例如，在该SL资源承载F个SL载波的SL CSI报告对应的MAC CE后，该SL资源能够发送该F个SL MAC CE，或者该SL能够发送该F个SL MAC CE以及对应的SL MAC CE的子头；但如果该SL资源再多承载任一个SL载波的SL CSI报告对应的MAC CE(即，该SL MAC CE承载F+1个SL载波的SL CSI报告对应的MAC CE)，则该SL资源无法发送该F+1个SL MAC CE，或者该SL资源无法发送该F+1个SL MAC CE以及对应的SL MAC CE的子头。
对于剩余的SL载波的SL CSI报告(例如K-F个SL载波的SL CSI报告)，第一UE可以再向接入网设备请求SL资源以进行发送，关于第一UE触发SR以及请求SL资源等过程，可参考图6所示的实施例的介绍。另外，关于该SL MAC CE的格式等内容，可参考图4所示的实施例的介绍。
第一UE从全部SL载波的SL CSI报告中确定部分SL载波的SL CSI报告，可以采用如下方式A 至方式H中的任意一种方式，或采用方式A至方式H中的任意多种方式的组合。下面介绍这几种方式。
方式A、优先级选择方式。
例如，接入网设备或第二UE可以预先向第一UE配置(或重配置)一个或多个SL载波的优先级，或者配置(或重配置)一个或多个SL CSI报告的优先级。上述配置了优先级的SL载波，例如为第一UE被配置的全部载波，或为第一UE能够发送SL CSI报告的全部SL载波，或为第一UE能够发送SL-CSI reporting MAC CE的全部载波，或为第一UE被使能了CSI获取功能的部分载波。例如，在接入网设备或第二UE为第一UE初始配置SL载波时，可以一并为相应的SL载波配置优先级；或者，在接入网设备或第二设备为第一UE配置添加SL载波时，可以为添加的SL载波配置优先级；或者，在接入网设备或第二设备为第一UE配置修改或释放SL载波时，可以为未被修改的或未被释放的SL载波重配置优先级。
在优先级选择方式下，第一UE可以选择优先发送优先级较高的SL CSI报告，或者优先发送优先级较高的SL载波的SL CSI报告。例如，F个SL载波的优先级，高于或等于K个SL载波中除了F个SL载波外的剩余SL载波的优先级，则接入网设备可以确定本次发送F个SL载波的SL CSI报告。或者，F个SL载波的SL CSI报告的优先级，高于或等于K个SL载波的SL CSI报告中除了F个SL载波的SL CSI报告外的剩余SL载波的SL CSI报告的优先级，则接入网设备可以确定本次发送F个SL载波的SL CSI报告。
可选的，如果有多个SL载波的SL CSI报告的优先级相同，或者多个SL载波的优先级相同，那么第一UE如果要从这多个SL载波的SL CSI报告中选择优先发送的SL CSI报告，可以采用方式B至方式H中的任意一种或多种方式。或者，优先发送哪个或哪些SL载波的SL CSI报告，可以由UE随机选择来实现。
方式B、信道质量变化量选择方式。
一个SL载波的信道质量变化量，可根据该SL载波当前待发送的SL CSI报告与该SL载波上次的SL CSI报告确定。一种可选的方式为，信道质量通过信道质量信息(channel quality information，CQI)衡量，一个SL载波的SL CSI报告可以指示该SL载波的CQI。那么，一个SL载波的信道质量变化量，可以根据该SL载波当前待发送的SL CSI报告所指示的CQI与该SL载波上次的SL CSI报告所指示的CQI确定，例如一个SL载波的信道质量变化量可以等于该SL载波当前待发送的SL CSI报告所指示的CQI与该SL载波上次的SL CSI报告所指示的CQI的差值。可选的，两个CQI的差值，可以根据这两个CQI的索引来确定，例如两个CQI的差值可以是这两个CQI的索引的差值。该差值越大，表明信道质量变化量越大。
在信道质量变化量选择方式下，第一UE可以选择优先发送信道质量变化量大的SL载波的SL CSI报告。例如，SL载波1上次的CQI索引为5，当前的CQI索引为1，这两个索引的差值为4；SL载波2上次的CQI索引为10，当前的CQI索引为12，这两个索引的差值为2，则第一UE可以优先发送SL载波1的SL CSI报告。例如，F个SL载波的SL CSI报告对应的信道质量变化量，大于或等于K个SL载波的SL CSI报告中除了F个SL载波的SL CSI报告外剩余SL载波的SL CSI报告对应的信道质量变化量。
可选的，如果有多个SL载波的SL CSI报告对应的信道质量变化量相同，那么第一UE如果要从这多个SL载波的SL CSI报告中选择优先发送的SL CSI报告，可以采用方式A至方式H中除了方式B外的任意一种或多种方式。或者，优先发送哪个或哪些SL载波的SL CSI报告可以由UE随机选择来实现。
方式C、信道质量选择方式。
一个SL载波的信道质量，可根据该SL载波当前待发送的SL CSI报告确定。一种可选的方式为，信道质量通过CQI衡量，一个SL载波的SL CSI报告可以指示该SL载波的CQI。那么，一个SL载波的信道质量，可以根据该SL载波当前待发送的SL CSI报告所指示的CQI确定，例如该CQI的索引能够反映该SL载波的信道质量。例如，一个SL载波的CQI的索引越大，表明该SL载波的信道质量越好。
在信道质量选择方式下，第一UE可以选择优先发送信道质量好的SL载波的SL CSI报告。例如，SL载波1当前的CQI索引为11，SL载波2当前的CQI索引为2，则第一UE可以优先发送SL载波1的SL CSI报告。例如，F个SL载波的SL CSI报告对应的信道质量，大于或等于K个SL载波的SL CSI 报告中除了F个SL载波的SL CSI报告外剩余SL载波的SL CSI报告对应的信道质量；或者，F个SL载波的信道质量，大于或等于K个SL载波中除了F个SL载波外剩余SL载波的信道质量。
可选的，如果有多个SL载波的SL CSI报告对应的信道质量相同，那么第一UE如果要从这多个SL载波的SL CSI报告中选择优先发送的SL CSI报告，可以采用方式A至方式H中除了方式C和方式D外的任意一种或多种方式。或者，优先发送哪个或哪些SL载波的SL CSI报告可以由UE随机选择来实现。
方式D、信道质量信息索引选择方式。
信道质量信息例如通过CQI来衡量，那么信道质量信息索引可以是CQI索引。例如，一个SL载波的CQI的索引越大，表明该SL载波的信道质量越好，因此可以通过CQI索引来确定信道质量。
在信道质量信息索引选择方式下，第一UE可以选择优先发送信道质量信息索引较大的SL载波的SL CSI报告。例如，SL载波1当前的CQI索引为11，SL载波2当前的CQI索引为2，则第一UE可以优先发送SL载波1的SL CSI报告。例如，F个SL载波的SL CSI报告对应的信道质量信息索引，大于或等于K个SL载波的SL CSI报告中除了F个SL载波的SL CSI报告外剩余SL载波的SL CSI报告对应的信道质量信息索引。
可选的，如果有多个SL载波的SL CSI报告对应的信道质量信息索引相同，那么第一UE如果要从这多个SL载波的SL CSI报告中选择优先发送的SL CSI报告，可以采用方式A至方式H中除了方式C和方式D外的任意一种或多种方式。或者，优先发送哪个或哪些SL载波的SL CSI报告可以由UE随机选择来实现。
方式E、剩余有效时长确定方式。
一个SL载波的SL CSI报告一般都会有一定的反馈时长，或者说有效时长，如果第一UE在该有效时长内发送了该SL CSI报告，或者第二UE在该有效时长内接收了该SL CSI报告，则该SL CSI报告有效；否则，如果第一UE在该有效时长内未发送该SL CSI报告，或者第二UE在该有效时长内未接收该SL CSI报告，则该SL CSI报告无效，即，第一UE不再发送无效的SL CSI报告，或者，即使第二UE后续又接收了该SL CSI报告，也会作为无效信息。因此一个SL载波的SL CSI报告应在对应的有效时长内到达第二UE，以减小信息传输时延，也减少无效信息的比例。本申请实施例中，一个SL载波的SL CSI报告可以对应一个剩余有效时长，该剩余有效时长例如为该SL载波的SL CSI报告对应的有效时长中的剩余时长，该剩余时长的起始时刻为第一UE从K个SL载波的SL CSI报告中选择SL载波的SL CSI报告的时刻。
可选的，该有效时长可以通过定时器来控制，该定时器例如为侧行链路信道状态信息报告定时器(sl-CSI-ReportingTimer)。例如，当第一UE接收来自第二UE的用于调度一个SL载波的SL CSI报告的SCI时，第二UE可以启动该sl-CSI-ReportingTimer，另外，第一UE在发送该SCI时，或者在该SCI发送完毕后，也可以启动该sl-CSI-ReportingTimer，从而第一UE和第二UE可以根据同步的有效时长来控制该SL载波的SL CSI报告。那么，一个SL载波的SL CSI报告的剩余有效时长，例如为该SL载波对应的sl-CSI-ReportingTimer(或者，该SL载波的SL CSI报告对应的sl-CSI-ReportingTimer)剩余时长，该剩余时长的起始时刻为第一UE从K个SL载波的SL CSI报告中选择SL载波的SL CSI报告的时刻。
在剩余有效时长选择方式下，第一UE可以选择优先发送剩余有效时长较小的SL载波的SL CSI报告。例如，SL载波1对应的sl-CSI-ReportTimer的剩余时长为10个时隙(slot),SL载波2对应的sl-CSI-ReportTimer的剩余时长为50个时隙，则第一UE可以优先发送SL载波1的SL CSI报告。例如，F个SL载波的SL CSI报告对应的剩余有效时长，小于或等于K个SL载波的SL CSI报告中除了F个SL载波的SL CSI报告外剩余的SL载波的SL CSI报告对应的剩余有效时长。
可选的，如果有多个SL载波的SL CSI报告对应的剩余有效时差相同，那么第一UE如果要从这多个SL载波的SL CSI报告中选择优先发送的SL CSI报告，可以采用方式A至方式H中除了方式E外的任意一种或多种方式。或者，优先发送哪个或哪些SL载波的SL CSI报告可以由UE随机选择来实现。
方式F、触发时间选择方式。
一个SL载波的SL CSI报告的触发时间，例如为第一UE接收到来自第二UE的SCI的时间，该SCI可调度该SL载波的SL CSI报告；或者，一个SL载波的SL CSI报告的触发时间，例如为第一UE在内部触发该SL载波的SL CSI报告(或者，将该SL载波的SL CSI报告设置为触发状态)的时间。
在触发时间选择方式下，第一UE可以选择优先发送触发时间较早的SL载波的SL CSI报告。例如，SL载波1的SL CSI报告对应的触发时间为T1，SL载波2的SL CSI报告对应的触发时间为T2，T2早于T1，则第一UE可以优先发送SL载波2的SL CSI报告。例如，F个SL载波的SL CSI报告的触发时间，早于或等于K个SL载波的SL CSI报告中除了F个SL载波的SL CSI报告外剩余的SL载波的SL CSI报告的触发时间。
可选的，如果有多个SL载波的SL CSI报告的触发时间相同，例如通过一个SCI触发了多个SL CSI报告的触发时间，那么第一UE如果要从这多个SL载波的SL CSI报告中选择优先发送的SL CSI报告，可以采用方式A至方式H中除了方式F外的任意一种或多种方式。或者，优先发送哪个或哪些SL载波的SL CSI报告可以由UE随机选择来实现。
方式G、主SL载波选择方式。
例如，第一UE被配置了多个SL载波，且这多个SL载波中可以包括一个主(primary)SL载波，剩余的SL载波为辅(secondary)SL载波。那么第一UE可以选择优先发送主SL载波的SL CSI报告。例如，F个SL载波中可以包括第一UE的主SL载波。
另外，第一UE可以有一个或多个辅SL载波，如果第一UE要从这一个或多个辅SL载波的SL CSI报告中选择优先发送的SL CSI报告，可以采用方式A至方式H中除了方式G外的任意一种或多种方式。或者，优先发送哪个或哪些辅SL载波的SL CSI报告可以由UE随机选择来实现。
方式H、随机选择方式。
第一UE可以从K个SL载波的SL CSI报告中随机选择F个SL载波的SL CSI报告。
S702、第一UE向第二UE发送该SL MAC CE。相应的，第二UE接收来自第一UE的该SL MAC CE。该SL MAC CE包括(或，指示)F个SL载波的SL CSI报告。
本申请实施例中，如果SL资源无法承载K个SL载波的SL CSI报告，则第一UE可以采用多种方式确定F个SL载波的SL CSI报告，使得F个SL载波的SL CSI报告能够得以发送，以减小SL CSI报告的传输时延，并且F个SL载波的SL CSI报告相对来说更加重要，更有利于接收端UE根据收到的SL CSI报告调整调度参数，从而优化传输性能。而且第一UE的选择方式多样，较为灵活。
图8给出了本申请实施例提供的一种通信装置的结构示意图。所述通信装置800可以是图2、图3、图4、图6或图7所示的实施例中的任一个实施例所述的第一终端设备或该第一终端设备的电路系统，用于实现上述方法实施例中对应于第一终端设备的方法。或者，所述通信装置800可以是图2所示的实施例中的接入网设备的电路系统，用于实现上述方法实施例中对应于接入网设备的方法。具体的功能可以参见上述方法实施例中的说明。其中，例如一种电路系统为芯片系统。
该通信装置800包括至少一个处理器801。处理器801可以用于装置的内部处理，实现一定的控制处理功能。可选地，处理器801包括指令。可选地，处理器801可以存储数据。可选地，不同的处理器可以是独立的器件，可以位于不同物理位置，可以位于不同的集成电路上。可选地，不同的处理器可以集成在一个或多个处理器中，例如，集成在一个或多个集成电路上。
可选地，通信装置800包括一个或多个存储器803，用以存储指令。可选地，所述存储器803中还可以存储有数据。所述处理器和存储器可以单独设置，也可以集成在一起。
可选地，通信装置800包括通信线路802，以及至少一个通信接口804。其中，因为存储器803、通信线路802以及通信接口804均为可选项，因此在图8中均以虚线表示。
可选地，通信装置800还可以包括收发器和/或天线。其中，收发器可以用于向其他装置发送信息或从其他装置接收信息。所述收发器可以称为收发机、收发电路、输入输出接口等，用于通过天线实现通信装置800的收发功能。可选地，收发器包括发射机(transmitter)和接收机(receiver)。示例性地，发射机可以用于将基带信号生成射频(radio frequency)信号，接收机可以用于将射频信号转换为基带信号。
处理器801可以包括一个通用中央处理器(central processing unit，CPU)，微处理器，特定应用集成电路(application specific integrated circuit，ASIC)，或一个或多个用于控制本申请方案程序执行的集成电路。
通信线路802可包括一通路，在上述组件之间传送信息。
通信接口804，使用任何收发器一类的装置，用于与其他设备或通信网络通信，如以太网，无线接入网(radio access network，RAN)，无线局域网(wireless local area networks，WLAN)，有线接入网等。
存储器803可以是只读存储器(read-only memory，ROM)或可存储静态信息和指令的其他类型的静态存储设备，随机存取存储器(random access memory，RAM)或者可存储信息和指令的其他类型的动态存储设备，也可以是电可擦可编程只读存储器(electrically erasable programmable read-only memory，EEPROM)、只读光盘(compact disc read-only memory，CD-ROM)或其他光盘存储、光碟存储(包括压缩光碟、激光碟、光碟、数字通用光碟、蓝光光碟等)、磁盘存储介质或者其他磁存储设备、或者能够用于携带或存储具有指令或数据结构形式的期望的程序代码并能够由计算机存取的任何其他介质，但不限于此。存储器803可以是独立存在，通过通信线路802与处理器801相连接。或者，存储器803也可以和处理器801集成在一起。
其中，存储器803用于存储执行本申请方案的计算机执行指令，并由处理器801来控制执行。处理器801用于执行存储器803中存储的计算机执行指令，从而实现图2、图3、图4、图6或图7所示的实施例中的任一个实施例所述的第一终端设备所执行的步骤，或，实现图2所示的实施例所述的接入网设备所执行的步骤。
可选的，本申请实施例中的计算机执行指令也可以称之为应用程序代码，本申请实施例对此不作具体限定。
在具体实现中，作为一种实施例，处理器801可以包括一个或多个CPU，例如图8中的CPU0和CPU1。
在具体实现中，作为一种实施例，通信装置800可以包括多个处理器，例如图8中的处理器801和处理器805。这些处理器中的每一个可以是一个单核(single-CPU)处理器，也可以是一个多核(multi-CPU)处理器。这里的处理器可以指一个或多个设备、电路、和/或用于处理数据(例如计算机程序指令)的处理核。
当图8所示的装置为芯片时，例如是发送设备的芯片，或第一接收设备的芯片，或第二接收设备的芯片，则该芯片包括处理器801(还可以包括处理器805)、通信线路802和通信接口804，可选的，该可包括存储器803。具体地，通信接口804可以是输入接口、管脚或电路等。存储器803可以是寄存器、缓存等。处理器801和处理器805可以是一个通用的CPU，微处理器，ASIC，或一个或多个用于控制上述任一实施例的通信方法的程序执行的集成电路。
本申请实施例可以根据上述方法示例对装置进行功能模块的划分，例如，可以对应各个功能划分各个功能模块，也可以将两个或两个以上的功能集成在一个处理模块中。上述集成的模块既可以采用硬件的形式实现，也可以采用软件功能模块的形式实现。需要说明的是，本申请实施例中对模块的划分是示意性的，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式。比如，在采用对应各个功能划分各个功能模块的情况下，图9示出了一种装置示意图，该装置900可以是上述各个方法实施例中所涉及的第一终端设备或接入网设备，或者为第一终端设备中的芯片或接入网设备中的芯片。该装置900包括发送单元901、处理单元902和接收单元903。
应理解，该装置900可以用于实现本申请实施例的通信方法中由第一终端设备或接入网设备执行的步骤，相关特征可以参照上文图2、图3、图4、图6或图7所示实施例中的任一个实施例，此处不再赘述。
可选的，图9中的发送单元901、接收单元903以及处理单元902的功能/实现过程可以通过图8中的处理器801调用存储器803中存储的计算机执行指令来实现。或者，图9中的处理单元902的功能/实现过程可以通过图8中的处理器801调用存储器803中存储的计算机执行指令来实现，图9中的发送单元901和接收单元903的功能/实现过程可以通过图8中的通信接口804来实现。
可选的，当该装置900是芯片或电路时，则发送单元901和接收单元903的功能/实现过程还可以通过管脚或电路等来实现。
本申请还提供一种计算机可读存储介质，该计算机可读存储介质存储有计算机程序或指令，当该计算机程序或指令被运行时，实现前述方法实施例中由第一终端设备或接入网设备所执行的方法。这样，上述实施例中所述功能可以软件功能单元的形式实现并作为独立的产品销售或使用。基于这样的理解，本申请的技术方案本质上或者说对做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本申请各个实施例所述方法的全部或部分步骤。存储介质包括：U盘、移动硬盘、ROM、RAM、磁碟或者光盘等各种可以存储程序代码的介质。
本申请还提供一种计算机程序产品，该计算机程序产品包括：计算机程序代码，当该计算机程序代码在计算机上运行时，使得该计算机执行前述任一方法实施例中由第一终端设备或接入网设备所执行的方法。
本申请实施例还提供了一种处理装置，包括处理器和接口；所述处理器用于执行上述任一方法实施例所涉及的第一终端设备或接入网设备所执行的方法。
在上述实施例中，可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件实现时，可以全部或部分地以计算机程序产品的形式实现。所述计算机程序产品包括一个或多个计算机指令。在计算机上加载和执行所述计算机程序指令时，全部或部分地产生按照本申请实施例所述的流程或功能。所述计算机可以是通用计算机、专用计算机、计算机网络、或者其他可编程装置。所述计算机指令可以存储在计算机可读存储介质中，或者从一个计算机可读存储介质向另一个计算机可读存储介质传输，例如，所述计算机指令可以从一个网站站点、计算机、服务器或数据中心通过有线(例如同轴电缆、光纤、数字用户线(DSL))或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。所述计算机可读存储介质可以是计算机能够存取的任何可用介质或者是包含一个或多个可用介质集成的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质，(例如，软盘、硬盘、磁带)、光介质(例如，DVD)、或者半导体介质(例如固态硬盘(solid state disk，SSD))等。
本申请实施例中所描述的各种说明性的逻辑单元和电路可以通过通用处理器，数字信号处理器(digital signal processor，DSP)，专用集成电路(application specific integrated circuit，ASIC)，现场可编程门阵列(field-programmable gate array，FPGA)，或其它可编程逻辑装置，离散门或晶体管逻辑，离散硬件部件，或上述任何组合的设计来实现或操作所描述的功能。通用处理器可以为微处理器，可选地，该通用处理器也可以为任何传统的处理器、控制器、微控制器或状态机。处理器也可以通过计算装置的组合来实现，例如数字信号处理器和微处理器，多个微处理器，一个或多个微处理器联合一个数字信号处理器核，或任何其它类似的配置来实现。
本申请实施例中所描述的方法或算法的步骤可以直接嵌入硬件、处理器执行的软件单元、或者这两者的结合。软件单元可以存储于RAM、闪存、ROM、可擦除可编程只读存储器(erasable programmable read-only memory，EPROM)、EEPROM、寄存器、硬盘、可移动磁盘、CD-ROM或本领域中其它任意形式的存储媒介中。示例性地，存储媒介可以与处理器连接，以使得处理器可以从存储媒介中读取信息，并可以向存储媒介存写信息。可选地，存储媒介还可以集成到处理器中。处理器和存储媒介可以设置于ASIC中，ASIC可以设置于终端设备中。可选地，处理器和存储媒介也可以设置于终端设备中的不同的部件中。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上，使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理，从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
本申请的各个实施例中的内容可以相互参考，如果没有特殊说明以及逻辑冲突，不同的实施例之间的术语和/或描述具有一致性、且可以相互引用，不同的实施例中的技术特征根据其内在的逻辑关系可以组合形成新的实施例。
可以理解的，本申请实施例中，第一终端设备或接入网设备可以执行本申请实施例中的部分或全部步骤，这些步骤或操作仅是示例，本申请实施例中，还可以执行其它操作或者各种操作的变形。此外，各个步骤可以按照本申请实施例呈现的不同的顺序来执行，并且有可能并非要执行本申请实施例中的全部操作。

Claims (20)

  1. 一种通信方法，其特征在于，应用于第一终端设备，所述方法包括：
    接收来自接入网设备的第一配置信息，所述第一配置信息包括侧行链路载波与调度请求SR配置之间的关联关系；
    若第一侧行链路载波的侧行链路信道状态信息CSI报告被触发，且所述第一侧行链路载波上没有用于发送第一侧行链路介质接入控制控制元素MAC CE的侧行链路资源，则向所述接入网设备发送第一SR，所述第一SR用于请求侧行链路资源，所述第一侧行链路MAC CE用于指示所述第一侧行链路载波的侧行链路CSI报告，其中，所述第一SR对应所述第一侧行链路载波关联的SR配置，或所述第一SR对应预先配置的SR配置。
  2. 根据权利要求1所述的方法，其特征在于，所述方法还包括：
    接收来自所述接入网设备的用于指示第一侧行链路资源的信息，所述第一侧行链路资源为所述第一侧行链路载波上的资源；
    通过所述第一侧行链路资源向第二终端设备发送所述第一侧行链路MAC CE。
  3. 根据权利要求1或2所述的方法，其特征在于，
    所述第一配置信息包括的侧行链路载波为所述第一终端设备被配置的全部或部分侧行链路载波；或，
    所述第一配置信息包括的侧行链路载波为所述第一终端设备能够用于发送侧行链路CSI报告的全部或部分侧行链路载波；或，
    所述第一配置信息包括的侧行链路载波为所述第一终端设备的被使能了CSI获取功能的全部或部分侧行链路载波。
  4. 根据权利要求1～3任一项所述的方法，其特征在于，所述第一配置信息还包括所述预先配置的SR配置，所述预先配置的SR配置用于请求未关联SR配置的侧行链路载波上的侧行链路资源。
  5. 根据权利要求1～4任一项所述的方法，其特征在于，所述第一侧行链路载波上没有用于发送第一侧行链路MAC CE的侧行链路资源，包括：
    所述第一侧行链路载波上没有用于发送所述第一侧行链路MAC CE加上所述第一侧行链路MAC CE的子头的侧行链路资源，且所述侧行链路资源是用于新传的侧行链路资源。
  6. 根据权利要求1～5任一项所述的方法，其特征在于，所述侧行链路载波与SR配置之间的关联关系包括所述侧行链路载波与SR配置标识之间的关联关系，所述SR配置标识指示所述SR配置。
  7. 根据权利要求1～6任一项所述的方法，其特征在于，所述第一侧行链路MAC CE为侧行链路CSI报告MAC CE。
  8. 一种通信方法，其特征在于，应用于接入网设备，所述方法包括：
    向第一终端设备发送第一配置信息，所述第一配置信息包括侧行链路载波与调度请求SR配置之间的关联关系；
    接收来自所述第一终端设备的第一SR，所述第一SR用于请求侧行链路资源，其中，所述第一SR对应第一侧行链路载波关联的SR配置，或所述第一SR对应预先配置的SR配置。
  9. 根据权利要求8所述的方法，其特征在于，所述方法还包括：
    向所述第一终端设备发送用于指示第一侧行链路资源的信息，所述第一侧行链路资源为所述第一侧行链路载波上的资源。
  10. 根据权利要求9所述的方法，其特征在于，
    所述第一配置信息包括的侧行链路载波为所述第一终端设备被配置的全部或部分侧行链路载波；或，
    所述第一配置信息包括的侧行链路载波为所述第一终端设备能够用于发送侧行链路CSI报告的全部或部分侧行链路载波；或，
    所述第一配置信息包括的侧行链路载波为所述第一终端设备的被使能了CSI获取功能的全部或部分侧行链路载波。
  11. 根据权利要求9或10所述的方法，其特征在于，所述第一配置信息还包括所述预先配置的SR配置，所述预先配置的SR配置用于请求未关联SR配置的侧行链路载波上的侧行链路资源。
  12. 根据权利要求8～11任一项所述的方法，其特征在于，所述侧行链路载波与SR配置之间的关联关系包括所述侧行链路载波与SR配置标识之间的关联关系，所述SR配置标识指示所述SR配置。
  13. 根据权利要求8～12任一项所述的方法，其特征在于，所述第一侧行链路MAC CE为侧行链路CSI报告MAC CE。
  14. 一种通信方法，其特征在于，应用于第一终端设备，所述方法包括：
    向第二终端设备发送侧行链路MAC CE，所述侧行链路MAC CE用于指示第一侧行链路载波的侧行链路CSI报告，所述侧行链路MAC CE包括N个比特，所述N个比特用于指示所述第一侧行链路载波，或所述N个比特不用于指示任何侧行链路载波，N为正整数。
  15. 根据权利要求14所述的方法，其特征在于，
    若所述第一终端设备有多于一个侧行链路载波被配置了侧行链路CSI参考信号，所述N个比特用于指示所述第一侧行链路载波，或者，若所述第一终端设备仅有一个侧行链路载波被配置了侧行链路CSI参考信号，所述N个比特不用于指示任何侧行链路载波；或，
    若所述第一终端设备有多于一个侧行链路载波被使能了CSI获取功能，所述N个比特用于指示所述第一侧行链路载波，或者，若所述第一终端设备仅有一个侧行链路载波被使能了CSI获取功能，所述N个比特不用于指示任何侧行链路载波；或，
    若所述第一终端设备被配置了多于一个侧行链路载波，所述N个比特用于指示所述第一侧行链路载波，或者，若所述第一终端设备被配置了一个侧行链路载波，所述N个比特不用于指示任何侧行链路载波。
  16. 根据权利要求14或15所述的方法，其特征在于，所述侧行链路MAC CE为侧行链路CSI报告MAC CE。
  17. 一种通信装置，其特征在于，包括处理器和存储器，所述存储器和所述处理器耦合，所述处理器用于执行如权利要求1～7任一项所述的方法，或用于执行如权利要求8～13任一项所述的方法，或用于执行如权利要求14～16任一项所述的方法。
  18. 一种计算机可读存储介质，其特征在于，所述计算机可读存储介质用于存储计算机程序，当所述计算机程序在计算机上运行时，使得所述计算机执行如权利要求1～7任一项所述的方法，或使得所述计算机执行如权利要求8～13任一项所述的方法，或使得所述计算机执行如权利要求14～16任一项所述的方法。
  19. 一种芯片系统，其特征在于，所述芯片系统包括：
    处理器和接口，所述处理器用于从所述接口调用并运行指令，当所述处理器执行所述指令时，实现如权利要求1～7任一项所述的方法，或实现如权利要求8～13任一项所述的方法，或实现如权利要求14～16任一项所述的方法。
  20. 一种计算机程序产品，其特征在于，所述计算机程序产品包括计算机程序，当所述计算机程序在计算机上运行时，使得所述计算机执行如权利要求1～7任一项所述的方法，或使得所述计算机执行如权利要求8～13任一项所述的方法，或使得所述计算机执行如权利要求14～16任一项所述的方法。
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CN113473614A (zh) * 2020-03-30 2021-10-01 华为技术有限公司 确定资源的方法和装置
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CN112566265A (zh) * 2019-09-26 2021-03-26 大唐移动通信设备有限公司 一种调度请求触发方法、信息配置方法、终端及网络设备
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