Sidelink communication method, apparatus, and storage medium

Abstract

The present disclosure relates to a sidelink communication method, device and storage medium. The method comprises: determining a target beam for sidelink communication; and performing sidelink communication with a second device based on the target beam. The present disclosure improves the performance of sidelink beam-based transmission by indicating the target beam used for sidelink communication and performing sidelink communication based on the target beam.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of communication, and particularly relates to a sidelink communication method and device and storage medium. BACKGROUND

[0002] In new radio technology (NR), especially when the communication frequency band is in the second frequency range (frequency range 2, FR2), due to fast high-frequency channel attenuation, in order to ensure coverage, beam-based transmission and reception need to be used. In order to realize beam-based transmission, beam measurement needs to be performed. In NR, at least one of a synchronization signal block (SSB) and a channel state information reference signal (CSI-RS) is mainly used for beam measurement.

[0003] Among them, the sidelink communication has been widely applied, and how to perform transmission based on beams in the sidelink communication is being studied. SUMMARY

[0004] In order to overcome the problems in the related art, the present disclosure provides a sidelink communication method, device and storage medium.

[0005] According to a first aspect of an embodiment of the present disclosure, a sidelink communication method is provided, the method is performed by a first device, and the method comprises: determining a target beam for sidelink communication; and performing sidelink communication with a second device based on the target beam.

[0006] In some embodiments, the target beam is used for channel transmission and / or signal transmission of the sidelink; the channel comprises at least one of the following: a physical sidelink shared channel (PSSCH); a physical sidelink control channel (PSCCH); a physical sidelink feedback channel (PSFCH); a physical sidelink broadcast channel (PSBCH); and the signal comprises at least one of the following: a sidelink synchronization signal and a physical sidelink broadcast channel block; a sidelink channel state information reference signal (CSI-RS); a sidelink demodulation reference signal (DMRS); and a sidelink phase tracking reference signal (PT-RS).

[0007] In some embodiments, the target beams for different channel or signal transmissions are the same; or the target beams for different channel or signal transmissions are different, and each target beam corresponds to one or more channels / signals.

[0008] In some embodiments, the method further comprises: receiving indication information sent by the second device and / or a network device, the indication information being used to indicate the target beam.

[0009] In some embodiments, the indication information comprises a reference signal resource identifier; a channel / signal used for the sidelink communication transmission between the first device and the second device has a quasi co-location relationship with a reference signal corresponding to the reference signal resource identifier.

[0010] In some embodiments, the indication information comprises at least one of the following: first signaling for configuring a beam list; second signaling for activating one or more sets of beams in the beam list, each set of beams comprising at least one target beam; third signaling for indicating a codepoint corresponding to a set of beams in the multiple sets of beams.

[0011] In some embodiments, in response to the number of beams configured by the first signaling being greater than a threshold, the indication information comprises the second signaling.

[0012] In some embodiments, in response to the second signaling activating a set of beams, the set of beams is used for the sidelink communication.

[0013] In some embodiments, in response to the second signaling activating multiple sets of beams, each set of beams in the multiple sets of beams corresponds to a codepoint.

[0014] In some embodiments, the set of beams activated by the second signaling comprises at least one target beam, multiple target beams in the at least one target beam correspond to multiple panels, and the multiple panels are multiple panels of the first device and / or the second device.

[0015] In some embodiments, the codepoint indicated by the third signaling is indicated by a beam indication field of sidelink control information, and the codepoint has a corresponding relationship with a beam identifier.

[0016] In some embodiments, the corresponding relationship is indicated by the first signaling or the second signaling, or the corresponding relationship is determined based on a default rule.

[0017] In some embodiments, the sidelink control information comprises at least one of the following: first-stage sidelink control information SCI 1-A; second-stage SCI 2-A; second-stage SCI 2-B; second-stage SCI 2-C; and other sidelink control information different from the first-stage SCI 1-A, the second-stage SCI 2-A, the second-stage SCI 2-B, and the second-stage SCI 2-C.

[0018] In some embodiments, the sidelink control information carrying the beam indication field further comprises a beam measurement request field.

[0019] In some embodiments, the first signaling is carried in radio resource control signaling (RRC) sent by the network device; or the first signaling is carried in radio resource control signaling (RRC) sent by the second device through the PC5 interface; or the first signaling is carried in a sidelink medium access control control element (MAC CE).

[0020] In some embodiments, the second signaling is carried in a sidelink medium access control control element (MAC CE).

[0021] In some embodiments, the third signaling is carried in sidelink control information.

[0022] In some embodiments, the method further includes determining the target beam based on a beam report indicated by the first device.

[0023] In some embodiments, the beam report includes at least one of the following: N beam identifiers, and beam qualities corresponding to the N beam identifiers, N being a positive integer.

[0024] In some embodiments, the beam identifier is a reference signal resource identifier corresponding to a beam; and the reference signal resource identifier includes at least one of the following: a sidelink channel state information reference signal (CSI-RS) resource identifier; a sidelink synchronization signal and physical broadcast channel (S-SS / PSBCH) block identifier; a time slot identifier corresponding to the reference signal resource; and a mini-slot identifier corresponding to the reference signal resource.

[0025] In some embodiments, in response to the value of N being 1, the target beam is a beam corresponding to one beam identifier in the beam report.

[0026] In some embodiments, in response to the value of N being a positive integer greater than 1, the target beam is a beam with the highest beam quality among beams corresponding to the N beam identifiers in the beam report, or the target beam is a beam corresponding to a beam identifier with the lowest bit position in the beam report.

[0027] In some embodiments, the beam report is based on an implicit indication of a physical sidelink feedback channel (PSFCH) carrying a physical hybrid automatic repeat request (HARQ) feedback of the PSSCH, and the target beam is a beam corresponding to a reference signal on a specified reference signal resource; and the specified reference signal resource has a corresponding relationship with a specified PSSCH, and the specified PSSCH is a PSSCH corresponding to the PSFCH carrying the HARQ feedback.

[0028] In some embodiments, the sidelink communication with the second device based on the target beam includes: within a first time period after the first device indicates the beam report, performing sidelink communication with the second device based on the target beam.

[0029] In some embodiments, the first time period is after the beam switching of the first device, and within a time period in which the target beam is valid, where the target beam valid means that the first device is allowed to perform sidelink communication with the second device based on the target beam.

[0030] According to a second aspect of the embodiments of the present disclosure, a sidelink communication method is provided, the method being performed by a second device, and the method comprising: sending, to a first device, indication information, the indication information being used to indicate a target beam for sidelink communication; and performing, based on the target beam, sidelink communication with the first device.

[0031] In some embodiments, the target beam is used for channel transmission and / or signal transmission of the sidelink; the channel comprises at least one of the following: a physical sidelink shared channel (PSSCH); a physical sidelink control channel (PSCCH); a physical sidelink feedback channel (PSFCH); a physical sidelink broadcast channel (PSBCH); and the signal comprises at least one of the following: a sidelink synchronization signal and a physical sidelink broadcast channel block; a sidelink channel state information reference signal (CSI-RS); a sidelink demodulation reference signal (DMRS); and a sidelink phase tracking reference signal (PT-RS).

[0032] In some embodiments, the target beams for different channel or signal transmissions are the same; or the target beams for different channel or signal transmissions are different, each target beam corresponding to one or more channels / signals.

[0033] In some embodiments, the indication information comprises a reference signal resource identifier; the channel / signal used for the sidelink communication transmission between the first device and the second device has a quasi-co-location relationship with a reference signal corresponding to the reference signal resource identifier.

[0034] In some embodiments, the indication information comprises at least one of the following: first signaling used to configure a beam list; second signaling used to activate one or more sets of beams in the beam list, each set of beams comprising at least one target beam; and third signaling used to indicate a code point corresponding to a set of beams in the multiple sets of beams.

[0035] In some embodiments, in response to the number of beams configured by the first signaling being greater than a threshold number, the indication information comprises the second signaling.

[0036] In some embodiments, in response to the second signaling activating a set of beams, the set of beams is used for the sidelink communication.

[0037] In some embodiments, in response to the second signaling activating multiple sets of beams, each set of beams in the multiple sets of beams corresponds to a code point.

[0038] In some embodiments, the set of beams activated by the second signaling includes at least one target beam, and a plurality of target beams in the at least one target beam correspond to a plurality of panels, and the plurality of panels are a plurality of panels of the first device and / or the second device.

[0039] In some embodiments, the codepoint indicated by the third signaling is indicated by a beam indication field of the sidelink control information, and there is a corresponding relationship between the codepoint and a beam identifier.

[0040] In some embodiments, the corresponding relationship is indicated by the first signaling or the second signaling, or the corresponding relationship is determined based on a default rule.

[0041] In some embodiments, the sidelink control information includes at least one of: first-stage sidelink control information SCI 1-A; second-stage SCI 2-A; second-stage SCI 2-B; second-stage SCI 2-C; and other sidelink control information different from the first-stage SCI 1-A, the second-stage SCI 2-A, the second-stage SCI 2-B, and the second-stage SCI 2-C.

[0042] In some embodiments, the sidelink control information carrying the beam indication field further includes a beam measurement request field.

[0043] In some embodiments, the first signaling is carried in radio resource control signaling RRC sent by the second device through a PC5 interface; or the first signaling is carried in a sidelink medium access control control element MAC CE.

[0044] In some embodiments, the second signaling is carried in a sidelink medium access control control element MAC CE.

[0045] In some embodiments, the third signaling is carried in sidelink control information.

[0046] In some embodiments, the method further includes: determining the target beam based on a beam report indicated by the first device.

[0047] In some embodiments, the beam report includes at least one of: N beam identifiers, and beam quality corresponding to the N beam identifiers, N being a positive integer.

[0048] In some embodiments, the beam identifier is a reference signal resource identifier corresponding to a beam; and the reference signal resource identifier includes at least one of: a sidelink channel state information reference signal CSI-RS resource identifier; a sidelink synchronization signal and physical broadcast channel S-SS / PSBCH block identifier; a time slot identifier corresponding to the reference signal resource; and a mini-slot identifier corresponding to the reference signal resource.

[0049] In some embodiments, in response to the value of N being 1, the target beam is a beam corresponding to one beam identifier in the beam report.

[0050] In some embodiments, in response to the value of N being a positive integer greater than 1, the target beam is a beam with the highest beam quality among N beams corresponding to N beam identifiers in the beam report, or the target beam is a beam corresponding to a beam identifier with the lowest bit position in the beam report.

[0051] In some embodiments, the beam report is based on an implicit indication of a PSFCH carrying a physical hybrid automatic repeat request (HARQ) feedback of a PSSCH, and the target beam is a beam corresponding to a reference signal on a specified reference signal resource; wherein the specified reference signal resource has a corresponding relationship with a specified PSSCH, and the specified PSSCH is a PSSCH corresponding to the PSFCH carrying the HARQ feedback.

[0052] In some embodiments, the sidelink communication with the first device based on the target beam includes: performing the sidelink communication with the first device based on the target beam within a first time period after the first device indicates the beam report.

[0053] In some embodiments, the first time period is within a time period in which the target beam is valid after the first device performs the beam switching, wherein the target beam being valid means that the first device is allowed to perform the sidelink communication with the second device based on the target beam.

[0054] According to a third aspect of the embodiments of the present disclosure, a sidelink communication method is provided, the method being performed by a network device, and the method comprising: sending, to a first device, indication information, the indication information being used to indicate a target beam for sidelink communication, the target beam being used for the first device to perform sidelink communication with a second device.

[0055] In some embodiments, the target beam is used for channel transmission and / or signal transmission of the sidelink; the channel includes at least one of the following: a physical sidelink shared channel (PSSCH); a physical sidelink control channel (PSCCH); a physical sidelink feedback channel (PSFCH); a physical sidelink broadcast channel (PSBCH); and the signal includes at least one of the following: a sidelink synchronization signal and a physical sidelink broadcast channel block; a sidelink channel state information reference signal (CSI-RS); a sidelink demodulation reference signal (DMRS); and a sidelink phase tracking reference signal (PT-RS).

[0056] In some embodiments, the target beams for different channel or signal transmissions are the same; or the target beams for different channel or signal transmissions are different, and each target beam corresponds to one or more channels / signals.

[0057] In some embodiments, the indication information comprises a reference signal resource identifier; a channel / signal used for the sidelink communication transmission between the first device and the second device has a quasi co-location relationship with a reference signal corresponding to the reference signal resource identifier.

[0058] In some embodiments, the indication information comprises at least one of the following: first signaling for configuring a beam list; second signaling for activating one or more sets of beams in the beam list, each set of beams comprising at least one target beam; third signaling for indicating a codepoint corresponding to a set of beams in the multiple sets of beams.

[0059] In some embodiments, in response to the number of beams configured by the first signaling being greater than the number threshold, the indication information comprises the second signaling.

[0060] In some embodiments, in response to the second signaling activating a set of beams, the set of beams is used for the sidelink communication.

[0061] In some embodiments, in response to the second signaling activating multiple sets of beams, each set of beams in the multiple sets of beams corresponds to a codepoint.

[0062] In some embodiments, the set of beams activated by the second signaling comprises at least one target beam, multiple target beams in the at least one target beam correspond to multiple panels, and the multiple panels are multiple panels of the first device and / or the second device.

[0063] In some embodiments, the third signaling indicates a corresponding relationship between the codepoint and a beam identifier.

[0064] In some embodiments, the corresponding relationship is indicated by the first signaling or the second signaling, or the corresponding relationship is determined based on a default rule.

[0065] In some embodiments, the first signaling is carried in radio resource control signaling (RRC) sent by a network device.

[0066] According to a fourth aspect of embodiments of the present disclosure, a sidelink communication device is provided, the device being configured in a first device, and the device comprising: a processing module configured to determine a target beam for sidelink communication; and a transmission module configured to perform sidelink communication with a second device based on the target beam.

[0067] In some embodiments, the target beam is used for channel transmission and / or signal transmission of the sidelink; the channel includes at least one of the following: a physical sidelink shared channel (PSSCH); a physical sidelink control channel (PSCCH); a physical sidelink feedback channel (PSFCH); a physical sidelink broadcast channel (PSBCH); the signal includes at least one of the following: a sidelink synchronization signal and a physical sidelink broadcast channel block; a sidelink channel state information reference signal (CSI-RS); a sidelink demodulation reference signal (DMRS); a sidelink phase tracking reference signal (PT-RS).

[0068] In some embodiments, the target beams for different channels or signal transmissions are the same; or the target beams for different channels or signal transmissions are different, and each target beam corresponds to one or more channels / signals.

[0069] In some embodiments, the transmission module is further configured to: receive indication information sent by the second device and / or the network device, the indication information being used to indicate the target beam.

[0070] In some embodiments, the indication information includes a reference signal resource identifier; the channels / signals used for sidelink communication transmission between the first device and the second device have a quasi-co-location relationship with a reference signal corresponding to the reference signal resource identifier.

[0071] In some embodiments, the indication information includes at least one of the following: first signaling used to configure a beam list; second signaling used to activate one or more sets of beams in the beam list, each set of beams including at least one target beam; third signaling used to indicate a code point corresponding to a set of beams in the multiple sets of beams.

[0072] In some embodiments, in response to the number of beams configured by the first signaling being greater than a threshold number, the indication information includes the second signaling.

[0073] In some embodiments, in response to the second signaling activating a set of beams, the set of beams is used for sidelink communication.

[0074] In some embodiments, in response to the second signaling activating multiple sets of beams, each set of beams in the multiple sets of beams corresponds to a code point.

[0075] In some embodiments, the set of beams activated by the second signaling includes at least one target beam, and multiple target beams in the at least one target beam correspond to multiple panels, and the multiple panels are multiple panels of the first device and / or the second device.

[0076] In some embodiments, the code point indicated by the third signaling is indicated by a beam indication field of sidelink control information, and the code point has a corresponding relationship with a beam identifier.

[0077] In some embodiments, the correspondence is indicated by the first signaling or the second signaling, or the correspondence is determined based on a default rule.

[0078] In some embodiments, the sidelink control information comprises at least one of: a first-stage sidelink control information SCI 1-A; a second-stage SCI 2-A; a second-stage SCI 2-B; a second-stage SCI 2-C; other sidelink control information different from the first-stage SCI 1-A, the second-stage SCI 2-A, the second-stage SCI 2-B, and the second-stage SCI 2-C.

[0079] In some embodiments, the sidelink control information carrying the beam indication field further comprises a beam measurement request field.

[0080] In some embodiments, the first signaling is carried in a radio resource control signaling RRC sent by the network device; or the first signaling is carried in a radio resource control signaling RRC sent by the second device through a PC5 interface; or the first signaling is carried in a sidelink medium access control control element MAC CE.

[0081] In some embodiments, the second signaling is carried in a sidelink medium access control control element MAC CE.

[0082] In some embodiments, the third signaling is carried in sidelink control information.

[0083] In some embodiments, the processing module is further configured to determine the target beam based on the beam report indicated by the first device.

[0084] In some embodiments, the beam report comprises at least one of: N beam identifications, and beam qualities corresponding to the N beam identifications, N being a positive integer.

[0085] In some embodiments, the beam identification is a reference signal resource identification corresponding to a beam; the reference signal resource identification comprises at least one of: a sidelink channel state information reference signal CSI-RS resource identification; a sidelink synchronization signal and physical broadcast channel S-SS / PSBCH block identification; a time slot identification corresponding to the reference signal resource; a mini-slot identification corresponding to the reference signal resource.

[0086] In some embodiments, in response to the value of N being 1, the target beam is a beam corresponding to one beam identification in the beam report.

[0087] In some embodiments, in response to the value of N being a positive integer greater than 1, the target beam is a beam with the largest beam quality among beams corresponding to the N beam identifications in the beam report, or the target beam is a beam corresponding to a beam identification with the lowest bit position in the beam report.

[0088] In some embodiments, the beam report is based on an implicit indication of a PSFCH carrying a physical hybrid automatic repeat request (HARQ) feedback of the PSSCH, and the target beam is a beam corresponding to a reference signal on a designated reference signal resource; wherein the designated reference signal resource has a correspondence with a designated PSSCH, and the designated PSSCH is a PSSCH corresponding to the PSFCH carrying the HARQ feedback.

[0089] In some embodiments, the transmission module is further configured to perform, within a first time period after the first device indicates the beam report, sidelink communication with the second device based on the target beam.

[0090] In some embodiments, the first time period is within a time period in which the target beam is valid after the first device performs the beam switch, and the target beam valid means that the first device is allowed to perform the sidelink communication with the second device based on the target beam.

[0091] According to a fifth aspect of the embodiments of the present disclosure, a sidelink communication device is provided, the device being configured to a second device, and the device comprising: a transmission module configured to send indication information to a first device, the indication information being used to indicate a target beam for sidelink communication; and the transmission module is further configured to perform sidelink communication with the first device based on the target beam.

[0092] In some embodiments, the target beam is used for channel transmission and / or signal transmission of the sidelink; the channel comprises at least one of the following: a physical sidelink shared channel (PSSCH); a physical sidelink control channel (PSCCH); a physical sidelink feedback channel (PSFCH); a physical sidelink broadcast channel (PSBCH); and the signal comprises at least one of the following: a sidelink synchronization signal and a physical sidelink broadcast channel block; a sidelink channel state information reference signal (CSI-RS); a sidelink demodulation reference signal (DMRS); and a sidelink phase tracking reference signal (PT-RS).

[0093] In some embodiments, the target beams for different channel or signal transmissions are the same; or the target beams for different channel or signal transmissions are different, and each target beam corresponds to one or more channels / signals.

[0094] In some embodiments, the indication information comprises a reference signal resource identifier; and the channel / signals used for the sidelink communication transmission between the first device and the second device have a quasi-co-location relationship with a reference signal corresponding to the reference signal resource identifier.

[0095] In some embodiments, the indication information comprises at least one of the following: first signaling used to configure a beam list; second signaling used to activate one or more sets of beams in the beam list, each set of beams comprising at least one target beam; and third signaling used to indicate a code point corresponding to a set of beams in the multiple sets of beams.

[0096] In some embodiments, in response to that the number of beams configured by the first signaling is greater than the number threshold, the indication information comprises the second signaling.

[0097] In some embodiments, in response to that the second signaling activates a set of beams, the set of beams are used for the sidelink communication.

[0098] In some embodiments, in response to that the second signaling activates a plurality of sets of beams, each set of beams in the plurality of sets of beams corresponds to one codepoint.

[0099] In some embodiments, the set of beams activated by the second signaling comprises at least one target beam, a plurality of target beams in the at least one target beam correspond to a plurality of panels, and the plurality of panels are a plurality of panels of the first device and / or the second device.

[0100] In some embodiments, the codepoint indicated by the third signaling is indicated by a beam indication field of the sidelink control information, and there is a corresponding relationship between the codepoint and a beam identifier.

[0101] In some embodiments, the corresponding relationship is indicated by the first signaling or the second signaling, or the corresponding relationship is determined based on a default rule.

[0102] In some embodiments, the sidelink control information comprises at least one of: a first-stage sidelink control information SCI 1-A; a second-stage SCI 2-A; a second-stage SCI 2-B; a second-stage SCI 2-C; and other sidelink control information different from the first-stage SCI 1-A, the second-stage SCI 2-A, the second-stage SCI 2-B, and the second-stage SCI 2-C.

[0103] In some embodiments, the sidelink control information carrying the beam indication field further comprises a beam measurement request field.

[0104] In some embodiments, the first signaling is carried in radio resource control signaling RRC sent by the second device through a PC5 interface; or the first signaling is carried in a sidelink medium access control control element MAC CE.

[0105] In some embodiments, the second signaling is carried in a sidelink medium access control control element MAC CE.

[0106] In some embodiments, the third signaling is carried in sidelink control information.

[0107] In some embodiments, the apparatus further comprises a processing module configured to determine a target beam based on a beam report indicated by the first device.

[0108] In some embodiments, the beam report comprises at least one of the following: N beam identifiers, and beam qualities corresponding to the N beam identifiers, N being a positive integer.

[0109] In some embodiments, the beam identifier is a reference signal resource identifier corresponding to the beam; the reference signal resource identifier comprises at least one of the following: a sidelink channel state information reference signal (CSI-RS) resource identifier; a sidelink synchronization signal and physical broadcast channel (S-SS / PSBCH) block identifier; a time slot identifier corresponding to the reference signal resource; a mini-slot identifier corresponding to the reference signal resource.

[0110] In some embodiments, in response to the value of N being 1, the target beam is a beam corresponding to one beam identifier in the beam report.

[0111] In some embodiments, in response to the value of N being a positive integer greater than 1, the target beam is a beam with the best beam quality among beams corresponding to the N beam identifiers in the beam report, or the target beam is a beam corresponding to a beam identifier with the lowest bit position in the beam report.

[0112] In some embodiments, the beam report is based on an implicit indication of a PSFCH carrying a physical hybrid automatic repeat request (HARQ) feedback of a PSSCH, and the target beam is a beam corresponding to a reference signal on a specified reference signal resource; the specified reference signal resource has a corresponding relationship with a specified PSSCH, and the specified PSSCH is a PSSCH corresponding to the PSFCH carrying the HARQ feedback.

[0113] In some embodiments, the transmission module is further configured to: perform sidelink communication with the first device based on the target beam within a first time period after the first device indicates the beam report.

[0114] In some embodiments, the first time period is within a time period in which the target beam is valid after the first device performs beam switching, and the target beam being valid means that the first device is allowed to perform sidelink communication with the second device based on the target beam.

[0115] According to a sixth aspect of the embodiments of the present disclosure, a sidelink communication apparatus is provided, the apparatus being configured in a network device, and the apparatus comprising: a transmission module configured to send indication information to a first device, the indication information being used to indicate a target beam for sidelink communication, the target beam being used for the first device to perform sidelink communication with a second device.

[0116] In some embodiments, the target beams are used for channel transmission and / or signal transmission of the sidelink; the channel includes at least one of the following: a physical sidelink shared channel (PSSCH); a physical sidelink control channel (PSCCH); a physical sidelink feedback channel (PSFCH); a physical sidelink broadcast channel (PSBCH); the signal includes at least one of the following: a sidelink synchronization signal and a physical sidelink broadcast channel block; a sidelink channel state information reference signal (CSI-RS); a sidelink demodulation reference signal (DMRS); a sidelink phase tracking reference signal (PT-RS).

[0117] In some embodiments, the target beams for different channels or signal transmissions are the same; or the target beams for different channels or signal transmissions are different, and each target beam corresponds to one or more channels / signals.

[0118] In some embodiments, the indication information includes a reference signal resource identifier; the channel / signals used for sidelink communication transmission between the first device and the second device have a quasi-co-location relationship with a reference signal corresponding to the reference signal resource identifier.

[0119] In some embodiments, the indication information includes at least one of the following: first signaling for configuring a beam list; second signaling for activating one or more sets of beams in the beam list, each set of beams including at least one target beam; third signaling for indicating a code point corresponding to a set of beams in the multiple sets of beams.

[0120] In some embodiments, in response to the number of beams configured by the first signaling being greater than a threshold number, the indication information includes the second signaling.

[0121] In some embodiments, in response to the second signaling activating a set of beams, the set of beams is used for sidelink communication.

[0122] In some embodiments, in response to the second signaling activating multiple sets of beams, each set of beams in the multiple sets of beams corresponds to a code point.

[0123] In some embodiments, the set of beams activated by the second signaling includes at least one target beam, and multiple target beams in the at least one target beam correspond to multiple panels, and the multiple panels are multiple panels of the first device and / or the second device.

[0124] In some embodiments, the third signaling indicates a corresponding relationship between the code point and a beam identifier.

[0125] In some embodiments, the corresponding relationship is indicated by the first signaling or the second signaling, or the corresponding relationship is determined based on a default rule.

[0126] In some embodiments, the first signaling is carried in radio resource control (RRC) signaling sent by a network device.

[0127] According to a seventh aspect of the embodiments of the present disclosure, a sidelink communication apparatus is provided, comprising: a processor; a memory for storing processor-executable instructions; wherein the processor is configured to perform the method of any one of the first aspect and the first aspect.

[0128] According to an eighth aspect of the embodiments of the present disclosure, a sidelink communication apparatus is provided, comprising: a processor; a memory for storing processor-executable instructions; wherein the processor is configured to perform the method of any one of the second aspect and the second aspect.

[0129] According to a ninth aspect of the embodiments of the present disclosure, a sidelink communication apparatus is provided, comprising: a processor; a memory for storing processor-executable instructions; wherein the processor is configured to perform the method of any one of the third aspect and the third aspect.

[0130] According to a tenth aspect of the embodiments of the present disclosure, a non-transitory computer-readable storage medium is provided, when the instructions in the storage medium are executed by a processor of a first device, the first device is enabled to perform the method of any one of the first aspect and the first aspect.

[0131] According to an eleventh aspect of the embodiments of the present disclosure, a non-transitory computer-readable storage medium is provided, when the instructions in the storage medium are executed by a processor of a second device, the second device is enabled to perform the method of any one of the second aspect and the second aspect.

[0132] According to a twelfth aspect of the embodiments of the present disclosure, a non-transitory computer-readable storage medium is provided, when the instructions in the storage medium are executed by a processor of a network device, the network device is enabled to perform the method of any one of the third aspect and the third aspect.

[0133] The technical solutions provided by the embodiments of the present disclosure can include the following beneficial effects: by indicating the target beam used for sidelink communication, sidelink communication is performed based on the target beam, thereby improving the performance of sidelink beam-based transmission.

[0134] It should be understood that the foregoing general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure. BRIEF DESCRIPTION OF DRAWINGS

[0135] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments consistent with the present disclosure and serve to explain the principles of the present disclosure together with the specification.

[0136] Figure 1 is a schematic diagram of a wireless communication system according to an exemplary embodiment.

[0137] Figure 2 is a sidelink communication method flow diagram according to an example embodiment.

[0138] Figure 3 is another sidelink communication method flow diagram according to an example embodiment.

[0139] Figure 4 is yet another sidelink communication method flow diagram according to an example embodiment.

[0140] Figure 5 is still another sidelink communication method flow diagram according to an example embodiment.

[0141] Figure 6 is another sidelink communication method flow diagram according to an example embodiment.

[0142] Figure 7 is yet another sidelink communication method flow diagram according to an example embodiment.

[0143] Figure 8 is still another sidelink communication method flow diagram according to an example embodiment.

[0144] Figure 9 is another sidelink communication method flow diagram according to an example embodiment.

[0145] Figure 10 is a sidelink communication system interaction diagram according to an example embodiment.

[0146] Figure 11 is a sidelink communication device diagram according to an example embodiment.

[0147] Figure 12 is another sidelink communication device diagram according to an example embodiment.

[0148] Figure 13 is yet another sidelink communication device diagram according to an example embodiment.

[0149] Figure 14 is a sidelink communication device diagram according to an example embodiment.

[0150] Figure 15 is another sidelink communication device diagram according to an example embodiment. DETAILED DESCRIPTION

[0151] The exemplary embodiments will be described in detail herein with reference to the attached drawings. The following description is made with reference to the accompanying drawings in which like reference numerals refer to like elements, unless the context of use indicates otherwise. The following description of exemplary embodiments is not representative of all possible embodiments consistent with the present disclosure.

[0152] The communication method consistent with the present disclosure can be applied to Figure 1 The wireless communication system 100 is shown. The network system can include a network device 110, a first terminal 120 and a second terminal 130. It can be understood that, Figure 1 The wireless communication system shown is only illustrative. Other network devices can also be included in the wireless communication system, such as wireless relay devices, core network devices, and wireless backhaul devices, etc., which are not shown in Figure 1 The number of network devices and the number of terminals included in the wireless communication system are not limited in the embodiments of the present disclosure.

[0153] It can be further understood that the wireless communication system of the embodiments of the present disclosure is a network that provides wireless communication functions. The wireless communication system can use different communication technologies, such as Code Division Multiple Access (CDMA), Wideband Code Division Multiple Access (WCDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency-Division Multiple Access (OFDMA), Single Carrier FDMA (SC-FDMA), Carrier Sense Multiple Access with Collision Avoidance. According to different network capacities, rates, delays, etc., the network can be divided into 2G (English: Generation) network, 3G network, 4G network or future evolution network, such as the 5th Generation Wireless Communication System (5G) network. The 5G network can also be referred to as a New Radio (NR) network. For the convenience of description, the wireless communication network is sometimes referred to as a network in the present disclosure.

[0154] Further, the network device 110 involved in the present disclosure can also include a wireless access network device. The wireless access network device can be a base station, an evolved Node B (eNB), a home base station, an access point (AP) in a Wireless Fidelity (WIFI) system, a wireless relay node, a wireless backhaul node, a transmission point (TP), or a transmission and receiving point (TRP), etc., and can also be a gNB in an NR system, or can also be a component or part of a device constituting a base station, etc. When it is a vehicle-to-everything (V2X) communication system, the network device can also be a vehicle-mounted device. It should be understood that the specific technology and specific device form adopted by the access network device in the embodiments of the present disclosure are not limited.

[0155] Further, the first terminal 120 and the second terminal 130 involved in the present disclosure can also be referred to as a terminal device, a user equipment (UE), a mobile station (MS), a mobile terminal (MT), etc., and is a device that provides voice and / or data connectivity for a user, for example, a handheld device having wireless connection function, a vehicle-mounted device, etc. At present, some examples of the terminal are: a mobile phone, a pocket personal computer (PPC), a palm computer, a personal digital assistant (PDA), a notebook computer, a tablet computer, a wearable device, or a vehicle-mounted device, etc. In addition, when it is a vehicle-to-everything (V2X) communication system, the terminal can also be a vehicle-mounted device. It should be understood that the specific technology and specific device form adopted by the terminal in the embodiments of the present disclosure are not limited.

[0156] In the embodiments of the present disclosure, the network device 110, the first terminal 120, and the second terminal 130 can adopt any feasible wireless communication technology to realize mutual transmission of data. Wherein, the transmission channel corresponding to the transmission of data or control information from the network device 110 to the first terminal 120 and the second terminal 130 is referred to as a downlink (DL) channel, and the transmission channel corresponding to the transmission of data or control information from the first terminal 120 and the second terminal 130 to the network device 110 is referred to as an uplink (UL) channel. It can be understood that the access network device involved in the embodiments of the present disclosure can be a base station. Of course, the access network device can also be any possible access network device, and the terminal can be any possible terminal, which is not limited in the present disclosure.

[0157] In NR, especially when the communication frequency band is in frequency range 2, due to the rapid attenuation of high frequency channels, in order to ensure coverage, it is necessary to use beam-based transmission and reception. It can be understood that the frequency of frequency range 2 is usually above 6GHz. In order to realize beam-based transmission, beam measurement needs to be performed. In NR, at least one of SSB and CSI-RS is mainly used for beam measurement.

[0158] Among them, the beam can also be referred to as spatial relation information, spatial setting, spatial receive parameter (spatial RX parameter), transmit spatial filter (Tx spatial filter), spatial domain receive filter, spatial domain transmission filter, transmission configuration indication (TCI) state, quasi co location (QCL) type D, etc.

[0159] At present, sidelink communication has been widely applied, but how to perform transmission based on beams in sidelink communication is being studied.

[0160] Therefore, the present disclosure provides a sidelink communication method, device and storage medium. By indicating the target beam used for sidelink communication, sidelink communication is performed based on the target beam, thereby improving the performance of sidelink transmission based on beams.

[0161] Figure 2 A sidelink communication method flowchart according to an exemplary embodiment is shown in FIG. 1. As shown in FIG. 1, the method is performed by a first device, and the method can include the following steps: Figure 2

[0162] In step S11, a target beam for sidelink communication is determined.

[0163] In step S12, sidelink communication is performed with a second device based on the target beam.

[0164] ​In some embodiments, the first device can be the first terminal 102 described above, and the second device can be the second terminal 103 described above; or the first device can be the second terminal 103 described above, and the second device can be the first terminal 102 described above.

[0165] In some embodiments, the first device can determine a target beam for sidelink communication. And based on the determined target beam, the first device can perform sidelink communication with the second device.

[0166] For example, the first device can send information to the second device based on the determined target beam for sidelink communication, or receive information sent by the second device.

[0167] The present disclosure improves the performance of sidelink beam-based transmission by indicating the target beam used for sidelink communication and performing sidelink communication based on the target beam.

[0168] In the sidelink communication method provided by the embodiments of the present disclosure, the target beam is used for channel transmission and / or signal transmission of the sidelink. The channel can include at least one of the following: a physical sidelink shared channel (PSSCH); a physical sidelink control channel (PSCCH); a physical sidelink feedback channel (PSFCH); a physical sidelink broadcast channel (PSBCH). The signal can include at least one of the following: a sidelink synchronization signal and a physical sidelink broadcast channel block (S-SS / PSBCH Block); a sidelink CSI-RS; a sidelink demodulation reference signal (DMRS); a sidelink phase-tracking reference signal (PT-RS).

[0169] In some embodiments, the target beam determined by the first device for sidelink communication can be used for channel transmission of the sidelink.

[0170] In some embodiments, the target beam determined by the first device for sidelink communication can be used for signal transmission of the sidelink.

[0171] In some embodiments, the target beam determined by the first device for the sidelink communication can be used for channel transmission and signal transmission of the sidelink.

[0172] In some embodiments, the channel can include a PSSCH.

[0173] In some embodiments, the channel can include a PSCCH.

[0174] In some embodiments, the channel can include a PSFCH.

[0175] In some embodiments, the channel can include a PSBCH.

[0176] In some embodiments, the channel can further include: a PSSCH, a PSCCH; a PSSCH, a PSFCH; a PSSCH, a PSBCH; a PSCCH, a PSFCH; a PSCCH, a PSBCH; a PSFCH, a PSBCH; a PSSCH, a PSCCH, a PSFCH; a PSSCH, a PSCCH, a PSBCH; a PSSCH, a PSFCH, a PSBCH; a PSCCH, a PSFCH, a PSBCH; a PSSCH, a PSCCH, a PSFCH, a PSBCH.

[0177] In some embodiments, the signal can include an S-SS / PSBCH Block.

[0178] In some embodiments, the signal can include a sidelink CSI-RS.

[0179] In some embodiments, the signal can include a sidelink DMRS.

[0180] In some embodiments, the signal can include a sidelink PT-RS.

[0181] In some embodiments, the signal can further include: an S-SS / PSBCH Block, a sidelink CSI-RS; an S-SS / PSBCH Block, a sidelink DMRS; an S-SS / PSBCH Block, a sidelink PT-RS; a sidelink CSI-RS, a sidelink DMRS; a sidelink CSI-RS, a sidelink PT-RS; a sidelink DMRS, a sidelink PT-RS; an S-SS / PSBCH Block, a sidelink CSI-RS, a sidelink DMRS; an S-SS / PSBCH Block, a sidelink CSI-RS, a sidelink PT-RS; an S-SS / PSBCH Block, a sidelink DMRS, a sidelink PT-RS; a sidelink CSI-RS, a sidelink DMRS, a sidelink PT-RS; an S-SS / PSBCH Block, a sidelink CSI-RS, a sidelink DMRS, a sidelink PT-RS.

[0182] The present disclosure is applicable to sidelink communication of multiple channels and / or signals, and the sidelink communication can be based on a target beam used for sidelink communication by indicating the target beam, thereby improving the performance of sidelink beam-based transmission.

[0183] In the sidelink communication method provided by the embodiments of the present disclosure, the target beams used for transmission of different channels or signals are the same; or the target beams used for transmission of different channels or signals are different, and each target beam corresponds to one or more channels / signals.

[0184] In some embodiments, the target beams used for transmission of different channels can be the same.

[0185] For example, the same target beams used for transmission of different channels can be determined based on the same default rule. For another example, the same target beams used for transmission of different channels can be indicated by signaling, such as using the same signaling to indicate the target beams used for transmission of different channels.

[0186] In some embodiments, the target beams used for transmission of different signals can be the same.

[0187] For example, the same target beams used for transmission of different signals can be determined based on the same default rule. For another example, the same target beams used for transmission of different signals can be indicated by signaling, such as using the same signaling to indicate the target beams used for transmission of different signals.

[0188] In some embodiments, the target beams used for transmission of different channels can be different. Each target beam corresponds to one or more channels.

[0189] For example, different target beams used for transmission of different channels can be determined based on different default rules. For another example, different target beams used for transmission of different channels can be indicated by multiple signaling, respectively.

[0190] In some embodiments, the target beams used for transmission of different signals can be different. Each target beam corresponds to one or more signals.

[0191] For example, different target beams used for transmission of different signals can be determined based on different default rules. For another example, different target beams used for transmission of different signals can be indicated by multiple signaling, respectively.

[0192] The disclosure is applicable to different sidelink communication scenarios by determining whether the different channels / signals used for sidelink communication are the same or different target beams. In the respective scenarios, by determining the target beams used for sidelink communication, sidelink communication is performed based on the target beams, thereby improving the performance of sidelink beam-based transmission.

[0193] The sidelink communication method provided by the embodiments of the disclosure, Figure 3 is another sidelink communication method flowchart according to an exemplary embodiment. As Figure 3 shown, the method can further include the following steps:

[0194] In step S21, the indication information sent by the second device and / or the network device is received.

[0195] In some embodiments, the network device can be the network device 101 described above.

[0196] In some embodiments, the first device can receive the indication information sent by the second device. The indication information is used to indicate the target beam.

[0197] In some embodiments, the first device can receive the indication information sent by the network device. The indication information is used to indicate the target beam.

[0198] In some embodiments, the first device can receive the indication information sent by the second device and the network device.

[0199] It can be understood that the indication information sent by the second device and the network device can be the same or different. If the indication information sent by the second device and the network device is different, the first device can determine to perform sidelink communication based on the target beam indicated by the indication information sent by the second device or the target beam indicated by the indication information sent by the network device based on a default rule. The default rule can be, for example, to preferentially use the indication information sent by the second device, or preferentially use the indication information sent by the network device, or preferentially use the indication information received first, and the disclosure does not limit.

[0200] The disclosure can indicate the target beam applicable to sidelink communication through the indication information. In order to perform sidelink communication based on the target beam, thereby improving the performance of sidelink beam-based transmission.

[0201] In the sidelink communication method provided by the embodiments of the disclosure, the indication information includes a reference signal resource identifier; the channel / signal used for sidelink communication transmission between the first device and the second device has a quasi-co-location relationship with the reference signal corresponding to the reference signal resource identifier.

[0202] In some embodiments, the indication information can comprise a reference signal resource identification.

[0203] It can be understood that the reference signal resource identification is a reference signal resource identification corresponding to the beam information.

[0204] Wherein, the identification can be an identity (ID) identification or an index. For example, the reference signal resource identification can be an S-SS / PSBCH Block resource index, a sidelink CSI-RS resource index, etc.

[0205] Wherein, the beam information can be used to indicate a target beam used by the sidelink communication. For example, the beam information can comprise at least one of the following: sidelink spatial relation information; sidelink spatial setting; sidelink spatial RX parameter; sidelink Tx spatial filter; sidelink spatial domain receive filters; sidelink spatial domain transmission filter; sidelink TCI state; sidelink QCL typeD.

[0206] In some embodiments, the beam information can comprise sidelink spatial relation information.

[0207] In some embodiments, the beam information can comprise sidelink spatial setting.

[0208] In some embodiments, the beam information can comprise sidelink spatial RX parameter.

[0209] In some embodiments, the beam information can comprise sidelink Tx spatial filter.

[0210] In some embodiments, the beam information can comprise sidelink spatial domain receive filters.

[0211] In some embodiments, the beam information can comprise sidelink spatial domain transmission filter.

[0212] In some embodiments, the beam information can comprise sidelink TCI state.

[0213] In some embodiments, the beam information can include sidelink QCL type D.

[0214] In some embodiments, the beam information can further include: sidelink spatial relation information, sidelink spatial setting; sidelink spatial RX parameter, sidelink Tx spatial filter, sidelink spatial domain receive filters; sidelink spatial relation information, sidelink spatial setting, sidelink spatial RX parameter, sidelink Tx spatial filter; sidelink spatial relation information, sidelink spatial setting, sidelink spatial RX parameter, sidelink Tx spatial filter, sidelink spatial domain receive filters; sidelink spatial relation information, sidelink spatial setting, sidelink spatial RX parameter, sidelink Tx spatial filter, sidelink spatial domain receive filters, sidelink spatial domain transmission filter; sidelink spatial relation information, sidelink spatial setting, sidelink spatial RX parameter, sidelink Tx spatial filter, sidelink spatial domain receive filters, sidelink spatial domain transmission filter, sidelink TCI state; sidelink spatial relation information, sidelink spatial setting, sidelink spatial RX parameter, sidelink Tx spatial filter, sidelink spatial domain receive filters, sidelink spatial domain transmission filter, sidelink TCI state sidelink QCL type D.

[0215] Of course, the beam information of the present disclosure can also include any two, three, four, five, six, seven or eight of the above, and the present disclosure will not be enumerated one by one.

[0216] In some embodiments, the channel / signal used for the sidelink communication transmission between the first device and the second device has a quasi-co-location relationship with the reference signal identified by the reference signal resource identifier. The reference signal corresponding to the reference signal resource identifier corresponds to the above beam information.

[0217] The present disclosure indicates the target beam applicable to sidelink communication by the reference signal resource identifier. So that the sidelink communication can be based on the target beam, thereby improving the performance of sidelink beam-based transmission.

[0218] The sidelink communication method provided by the embodiments of the present disclosure can include at least one of the following: first signaling for configuring a beam list; second signaling for activating one or more sets of beams in the beam list, each set of beams including at least one target beam; and third signaling for indicating a code point corresponding to a set of beams in the multiple sets of beams.

[0219] In some embodiments, the indication information can include first signaling. The first signaling can be used to configure the beam list.

[0220] In some embodiments, the indication information can include second signaling. The second signaling can be used to activate one or more sets of beams in the beam list.

[0221] Each set of beams can include one or more target beams.

[0222] In some embodiments, the indication information can include third signaling. The third signaling can be used to indicate a code point corresponding to a set of beams in the multiple sets of beams.

[0223] It can be understood that one beam list can include one or more sets of beams, and each set of beams can include one or more beams.

[0224] The present disclosure can indicate the target beam applicable to sidelink communication through one or more signaling. So that the sidelink communication can be based on the target beam, thereby improving the performance of sidelink beam-based transmission.

[0225] In the sidelink communication method provided by the embodiments of the present disclosure, in response to the number of beams configured by the first signaling being greater than the number threshold, the indication information includes the second signaling.

[0226] In some embodiments, the indication information should further include the second signaling in response to the number of beams configured by the first signaling being greater than the preset number threshold. That is, the indication information includes the first signaling and the second signaling.

[0227] For example, when the number of beams configured by the first signaling is large, for example, greater than the preset number threshold. In this case, the target beam for sidelink communication can be activated by the second signaling.

[0228] For example, if the codepoint in the third signaling cannot correspond to all the beams in the beam list, the second signaling is needed for activation. For example, the indication information contains 3 bits in the third signaling, which can support a maximum of 8 codepoints. If each codepoint corresponds to a set of beams, and the number of beams in the beam list configured by the first signaling is greater than 8 sets of beams, the second signaling is needed to activate a maximum of 8 sets of beams in the beam list configured by the first signaling.

[0229] The present disclosure can activate the target beam suitable for sidelink communication by the second signaling when the number of beams configured by the first signaling is large. So that the sidelink communication can be based on the target beam, thereby improving the performance of sidelink transmission based on the beam.

[0230] In the sidelink communication method provided by the embodiments of the present disclosure, a set of beams is activated by the second signaling, and the set of beams is used for sidelink communication.

[0231] In some embodiments, the activated set of beams can be used for sidelink communication in response to the second signaling activating the set of beams.

[0232] For example, the set of beams activated by the second signaling can be directly used for sidelink channel / signal transmission.

[0233] It can be understood that since the set of beams only corresponds to one codepoint in the third signaling, the third signaling can not be needed for codepoint indication.

[0234] The second signaling of the present disclosure can activate a set of target beams suitable for sidelink communication. So that the sidelink communication can be based on the target beam, thereby improving the performance of sidelink transmission based on the beam.

[0235] In the sidelink communication method provided by the embodiments of the present disclosure, multiple sets of beams are activated by the second signaling, and each set of beams in the multiple sets of beams corresponds to one codepoint.

[0236] In some embodiments, each set of beams in the multiple sets of beams can correspond to one codepoint in response to the second signaling activating the multiple sets of beams.

[0237] It can be understood that the codepoint corresponding to each set of beam pairs is the codepoint indicated by the third signaling. In this case, the indication information also needs to include the third signaling, which is used to indicate a codepoint. The third signaling can determine the set of beams corresponding to the codepoint in the multiple sets of beams in the second signaling, and perform sidelink communication based on the set of beams corresponding to the codepoint.

[0238] The second signaling of the present disclosure activates multiple sets of target beams suitable for sidelink communication, which can have a corresponding relationship with the codepoint in the third signaling. In this way, the target beam suitable for sidelink communication can be determined through the codepoint, and sidelink communication is performed based on the target beam, thereby improving the performance of sidelink transmission based on beams.

[0239] In the sidelink communication method provided by the embodiments of the present disclosure, the set of beams activated by the second signaling includes at least one target beam, and multiple target beams in the at least one target beam correspond to multiple panels, and the multiple panels are multiple panels of the first device and / or the second device.

[0240] In some embodiments, the set of beams activated by the second signaling can include at least one target beam. In the case that the at least one target beam is multiple target beams, the multiple target beams can correspond to multiple panels. The multiple panels can be multiple panels of the first device.

[0241] In some embodiments, the set of beams activated by the second signaling can include at least one target beam. In the case that the at least one target beam is multiple target beams, the multiple target beams can correspond to multiple panels. The multiple panels can be multiple panels of the second device.

[0242] In some embodiments, the set of beams activated by the second signaling can include at least one target beam. In the case that the at least one target beam is multiple target beams, the multiple target beams can correspond to multiple panels. The multiple panels can be multiple panels of the first device and the second device.

[0243] The multiple target beams included in the set of beams activated by the second signaling of the present disclosure can correspond to multiple panels, and sidelink communication can be performed based on the target beam suitable for sidelink communication using different panels. In this way, the performance of sidelink transmission based on beams is improved.

[0244] In the sidelink communication method provided by the embodiments of the present disclosure, the codepoint indicated by the third signaling is indicated by the beam indication field of the sidelink control information, and the codepoint has a corresponding relationship with the beam identifier.

[0245] In some embodiments, the codepoint indicated by the third signaling can be indicated by a beam indication field of sidelink control information (SCI). There is a corresponding relationship between the codepoint and the beam identifier.

[0246] For example, the codepoint indicated by the third signaling can be indicated by a beam indication field of SCI. The codepoint indicated by the beam indication field of SCI has a corresponding relationship with the beam ID.

[0247] For example, the third signaling is a beam indication field of SCI.

[0248] The codepoint indicated by the third signaling of the present disclosure can be indicated by the beam indication field of SCI, so as to indicate the target beam suitable for sidelink communication and perform sidelink communication based on the target beam, thereby improving the performance of sidelink beam-based transmission.

[0249] The sidelink communication method provided by the embodiments of the present disclosure indicates the corresponding relationship through the first signaling or the second signaling, or determines the corresponding relationship based on a default rule.

[0250] In some embodiments, the corresponding relationship between the codepoint indicated by the beam indication field of SCI and the beam identifier can be indicated by the first signaling.

[0251] In some embodiments, the corresponding relationship between the codepoint indicated by the beam indication field of SCI and the beam identifier can be indicated by the second signaling.

[0252] In some embodiments, the corresponding relationship between the codepoint indicated by the beam indication field of SCI and the beam identifier can be determined by a default rule.

[0253] The present disclosure provides a plurality of ways to indicate the corresponding relationship between the codepoint and the beam, so as to indicate the target beam suitable for sidelink communication and perform sidelink communication based on the target beam, thereby improving the performance of sidelink beam-based transmission.

[0254] In the sidelink communication method provided by the embodiments of the present disclosure, the SCI can include at least one of the following: first-stage SCI 1-A; second-stage SCI 2-A; second-stage SCI 2-B; second-stage SCI 2-C; and other SCI different from the first-stage SCI 1-A, the second-stage SCI 2-A, the second-stage SCI 2-B, and the second-stage SCI 2-C.

[0255] In some embodiments, the SCI containing the beam indication field can be the first-stage SCI 1-A.

[0256] In some embodiments, the SCI containing the beam indication field can be the second stage SCI 2-A.

[0257] In some embodiments, the SCI containing the beam indication field can be the second stage SCI 2-B.

[0258] In some embodiments, the SCI containing the beam indication field can be the second stage SCI 2-C.

[0259] In some embodiments, the SCI containing the beam indication field can be other SCI different from the first stage SCI 1-A, the second stage SCI 2-A, the second stage SCI 2-B, and the second stage SCI 2-C.

[0260] It can be understood that the other SCI different from the first stage SCI 1-A, the second stage SCI 2-A, the second stage SCI 2-B, and the second stage SCI 2-C can be a newly defined SCI, which can be used to include the beam indication field.

[0261] In some embodiments, the SCI containing the beam indication field can be: the first stage SCI 1-A, the second stage SCI 2-A; the second stage SCI 2-B, the second stage SCI 2-C, the other SCI; the first stage SCI 1-A, the second stage SCI 2-A, the second stage SCI 2-B, the second stage SCI 2-C; the first stage SCI 1-A, the second stage SCI 2-A, the second stage SCI 2-B, the second stage SCI 2-C, the other SCI.

[0262] It can be understood that the SCI containing the beam indication field in the present disclosure can be any two, three, four, or five of the above, which will not be listed one by one.

[0263] It can be understood that the configuration of each of the above SCIs can be as follows:

[0264] Among them, SCI 1-A refers to the SCI used for PSSCH scheduling and second stage SCI scheduling, which can also include at least one of the following serial numbers a to m:

[0265] a. Priority;

[0266] b. Time resource assignment;

[0267] c. Demodulation Reference Symbol (DMRS) pattern;

[0268] d. second-stage SCI format

[0269] e. Beta_offset indicator

[0270] f. DMRS port number

[0271] g. Modulation and coding scheme (MCS)

[0272] h. Additional MCS table indicator

[0273] i. PSFCH overhead indication

[0274] j. Reserved

[0275] k. Conflict information receiver flag

[0276] l. Higher layer parameter indication

[0277] m. Otherwise

[0278] wherein the SCI 2-A refers to a conventional SCI used for decoding the PSSCH, containing HARQ information of the PSSCH, and can further include at least one of the following sequence numbers a to h:

[0279] a. HARQ process number

[0280] b. New data indicator

[0281] c. Redundancy version (RV)

[0282] d. Source ID

[0283] e. Destination ID

[0284] f. HARQ feedback enabled / disabled indicator;

[0285] g. Cast type indicator;

[0286] h. CSI request.

[0287] Among them, SCI 2-B refers to the SCI used to decode the PSSCH when the HARQ-ACK of the HARQ operation only includes NACK or does not include HARQ-ACK information, and can also include at least one of the following sequence numbers a to sequence numbers m:

[0288] a. HARQ process number;

[0289] b. New data indicator;

[0290] c. Redundancy version (RV);

[0291] d. Source ID;

[0292] e. Destination ID;

[0293] f. HARQ feedback enabled / disabled indicator;

[0294] g. Zone ID;

[0295] h. Communication range requirement.

[0296] SCI 2-C refers to the SCI used to decode the PSSCH and provide information related to inter-UE cooperation, and can also include at least one of the following sequence numbers a to sequence numbers m:

[0297] a. HARQ process number;

[0298] b. New data indicator;

[0299] c. Redundancy version (RV);

[0300] d. Source ID;

[0301] e. Destination ID;

[0302] f. HARQ feedback enabled / disabled indicator;

[0303] g. CSI request;

[0304] h. Providing / Requesting indicator;

[0305] i. First resource location;

[0306] j. Reference slot location;

[0307] k. Resource set type;

[0308] l. Lowest subChannel indices;

[0309] m. Padding bits.

[0310] Of course, the specific configuration of each SCI can refer to the description in the related art, and the present disclosure will not be repeated.

[0311] The present disclosure is applicable to SCI of multiple different formats containing a beam indication field, so as to indicate a target beam applicable to sidelink communication and perform sidelink communication based on the target beam, thereby improving the performance of sidelink beam-based transmission.

[0312] In the sidelink communication method provided by the embodiments of the present disclosure, the sidelink control information carrying the beam indication field further includes a beam measurement request field.

[0313] In some embodiments, the SCI carrying the beam indication field can further include a beam measurement request field.

[0314] It can be understood that the beam measurement request field can carry a beam measurement request. The beam measurement request is used to request to perform beam measurement.

[0315] The SCI of the present disclosure can also contain a beam measurement request field to indicate to perform beam measurement, thereby obtaining the measurement results of each beam. So that the sidelink communication can be performed based on the beam with better measurement quality in the measurement results, thereby improving the performance of sidelink beam-based transmission.

[0316] In the sidelink communication method provided by the embodiment of the present disclosure, the first signaling is carried in radio resource control (RRC) signaling sent by the network device; or the first signaling is carried in RRC sent by the second device through the PC5 interface; or the first signaling is carried in a sidelink medium access control control element (MAC CE).

[0317] In some embodiments, the first signaling can be carried in RRC sent by the network device.

[0318] For example, the network device sends the RRC based on the Uu interface.

[0319] In some embodiments, the first signaling can be carried in RRC sent by the second device through the PC5 interface.

[0320] In some embodiments, the first signaling can be carried in a sidelink MAC CE.

[0321] For example, the second device indicates the first signaling through the sidelink MAC CE.

[0322] The present disclosure provides multiple carrying manners of the first signaling to indicate the target beam. The sidelink communication is performed based on the target beam, thereby improving the performance of sidelink beam-based transmission.

[0323] In the sidelink communication method provided by the embodiment of the present disclosure, the second signaling is carried in a sidelink MAC CE.

[0324] In some embodiments, the second signaling can be carried in a sidelink MAC CE.

[0325] The present disclosure provides a carrying manner of the second signaling to indicate the target beam. The sidelink communication is performed based on the target beam, thereby improving the performance of sidelink beam-based transmission.

[0326] In the sidelink communication method provided by the embodiment of the present disclosure, the third signaling is carried in SCI.

[0327] In some embodiments, the third signaling can be carried in SCI.

[0328] The present disclosure provides a carrying manner of the third signaling to indicate the target beam. The sidelink communication is performed based on the target beam, thereby improving the performance of sidelink beam-based transmission.

[0329] In the sidelink communication method provided by the embodiment of the present disclosure, Figure 4 is another sidelink communication method flowchart according to an exemplary embodiment. As shown in Figure 4As shown, the method can further include the following steps:

[0330] In step S31, the target beam is determined based on the beam report indicated by the first device.

[0331] In some embodiments, the first device can determine the target beam for sidelink communication based on the beam report indicated by the first device. In order to utilize the target beam to perform sidelink communication with the second device.

[0332] It can be understood that the first device can measure the beams to obtain the beam report. For example, when the first device receives a beam measurement request, the beam measurement can be determined based on the beam measurement request, and the corresponding beam report can be generated after the measurement is completed.

[0333] The present disclosure can also determine the target beam for sidelink communication based on the beam report indicated by the first device. In order to perform sidelink communication based on the target beam, thereby improving the performance of sidelink beam-based transmission.

[0334] In the sidelink communication method provided by the embodiments of the present disclosure, the beam report includes at least one of the following: N beam identifiers and beam qualities corresponding to the N beam identifiers. Wherein, N is a positive integer.

[0335] In some embodiments, the beam report can include N beam identifiers.

[0336] For example, when the beam report is an explicit report, the beam report can include N beam identifiers.

[0337] In some embodiments, the beam report can include beam qualities corresponding to the N beam identifiers.

[0338] For example, when the beam report is an explicit report, the beam report can include beam qualities corresponding to the N beam identifiers.

[0339] In the embodiments of the present disclosure, the beam quality includes at least one of the following sequence numbers a to sequence numbers e:

[0340] a. Layer 1 reference signal received power (L1-RSRP);

[0341] b. Layer 1 signal to interference plus noise ratio (L1-SINR);

[0342] c. Layer 3 reference signal received power (L3-RSRP);

[0343] d. Layer 3 reference signal receiving quality (L3-RSRQ);

[0344] e. Layer 3 signal to interference plus noise ratio (L3-SINR).

[0345] Of course, the beam quality can also include more possible parameters, which are not limited in the present disclosure.

[0346] The present disclosure can also indicate the target beam based on multiple parameters included in the explicit beam report. The sidelink communication is performed based on the target beam, thereby improving the performance of sidelink beam-based transmission.

[0347] In the sidelink communication method provided by the embodiments of the present disclosure, the beam identifier is the reference signal resource identifier corresponding to the beam. The reference signal resource identifier can include at least one of the following: sidelink CSI-RS resource identifier; sidelink synchronization signal and physical broadcast channel S-SS / PSBCH block identifier; slot identifier corresponding to the reference signal resource; and mini-slot identifier corresponding to the reference signal resource.

[0348] In some embodiments, the beam identifier can be the reference signal resource identifier corresponding to the beam.

[0349] For example, the reference signal resource identifier can be a reference signal resource ID.

[0350] In some embodiments, the reference signal resource identifier can include a sidelink CSI-RS resource identifier.

[0351] For example, the sidelink CSI-RS resource identifier can be a sidelink CSI-RS resource ID.

[0352] In some embodiments, the reference signal resource identifier can include an S-SS / PSBCH block resource identifier.

[0353] It can be understood that the sidelink S-SS / PSBCH block can also be referred to as S-SS / PSBCH Block.

[0354] For example, the S-SS / PSBCH block resource identifier can be an S-SS / PSBCH Block resource ID.

[0355] In some embodiments, the reference signal resource identification can comprise a slot identification corresponding to the reference signal resource.

[0356] For example, the slot identification corresponding to the reference signal resource can be a slot ID corresponding to the reference signal resource.

[0357] In some embodiments, the reference signal resource identification can comprise a mini-slot identification corresponding to the reference signal resource.

[0358] For example, the mini-slot identification corresponding to the reference signal resource can be a mini-slot ID corresponding to the reference signal resource.

[0359] Wherein, the mini-slot is relative to the slot as a granularity. When scheduling in the granularity of the slot, the number of occupied symbols is at least 3; the number of occupied symbols of the mini-slot can be 1 or 2. Moreover, one slot can contain a plurality of scheduling units of the mini-slot. One mini-slot can also occupy the symbols of two adjacent slots.

[0360] The present disclosure provides a plurality of forms of reference signal resource identification to indicate the target beam. The sidelink communication is performed based on the target beam, thereby improving the performance of sidelink beam-based transmission.

[0361] In the sidelink communication method provided by the embodiments of the present disclosure, in response to the value of N being 1, the target beam is the beam corresponding to the one beam identification in the beam report.

[0362] In some embodiments, in response to the value of N being 1, the target beam can be the beam corresponding to the only one beam identification in the beam report.

[0363] That is, the beam report only includes one beam identification or the beam quality corresponding to one beam identification, so the beam corresponding to the beam identification or the beam quality corresponding to the beam identification can be taken as the target beam.

[0364] The present disclosure indicates the target beam through the parameters included in the beam report. The sidelink communication is performed based on the target beam, thereby improving the performance of sidelink beam-based transmission.

[0365] In the sidelink communication method provided by the embodiments of the present disclosure, in response to the value of N being a positive integer greater than 1, the target beam is the beam with the maximum beam quality among the beams corresponding to the N beam identifications in the beam report, or the target beam is the beam corresponding to the beam identification with the lowest bit position in the beam report.

[0366] In some embodiments, in response to the value of N being a positive integer greater than 1, the target beam can be the beam with the best beam quality among the beams corresponding to the N beam identifiers.

[0367] For example, when the beam includes multiple beam identifiers corresponding to beam qualities, the beam corresponding to the beam identifier with the best beam quality is taken as the target beam.

[0368] In some embodiments, in response to the value of N being a positive integer greater than 1, the target beam can be the beam corresponding to the beam identifier with the lowest bit position in the beam report.

[0369] For example, the beam report includes multiple beam identifiers, which are recorded at different bit positions in the beam report. The beam corresponding to the beam identifier with the lowest bit position in the beam report can be taken as the target beam.

[0370] The present disclosure indicates the target beam through various parameters included in the beam report. The sidelink communication is performed based on the target beam, thereby improving the performance of sidelink beam-based transmission.

[0371] In the sidelink communication method provided by the embodiments of the present disclosure, the beam report is implicitly indicated based on the PSFCH carrying the HARQ feedback of the PSSCH, and the target beam is the beam corresponding to the reference signal on the specified reference signal resource. The specified reference signal resource has a corresponding relationship with the specified PSSCH, and the specified PSSCH is the PSSCH corresponding to the PSFCH carrying the HARQ feedback.

[0372] In some embodiments, the beam report can be implicitly indicated. The beam report can be implicitly indicated based on the PSFCH carrying the HARQ feedback of the PSSCH. The target beam indicated by the beam report can be the beam corresponding to the reference signal on the specified reference signal resource. The specified reference signal resource has a corresponding relationship with the PSSCH corresponding to the PSFCH carrying the HARQ feedback, i.e., the specified PSSCH.

[0373] For example, each sidelink CSI-RS resource for beam measurement has a corresponding relationship with a PSSCH. The PSFCH resources corresponding to each PSSCH are different. The HARQ feedback corresponding to the PSSCH, such as HARQ ACK feedback or HARQ NACK feedback, can be sent on the PSFCH of the specified PSSCH. The beam report implicitly indicates which beam is selected, i.e., the specified target beam is the beam corresponding to the sidelink CSI-RS resource corresponding to the PSSCH corresponding to the specified PSFCH.

[0374] For example, the first sidelink CSI-RS resource has a correspondence relationship with the first PSSCH, and the first PSSCH corresponds to the first PSFCH; the second sidelink CSI-RS resource has a correspondence relationship with the second PSSCH, and the second PSSCH corresponds to the second PSFCH. If the first device selects the beam corresponding to the first sidelink CSI-RS resource as the target beam through measurement, and feeds back the HARQ ACK / NACK corresponding to the first PSSCH on the first PSFCH, it indicates that the first device selects the beam corresponding to the first sidelink CSI-RS resource as the target beam.

[0375] The correspondence relationship between the specified PSSCH and the specified reference signal resource can include at least one of the following: the specified PSSCH and the specified reference signal resource are transmitted in the same time slot; the specified PSSCH and the specified reference signal resource are transmitted in frequency division multiplexing (FDM) mode; and the specified PSSCH and the specified reference signal resource are transmitted in time division multiplexing (TDM) mode.

[0376] The present disclosure implicitly indicates the target beam through the beam report, so as to improve the performance of sidelink beam-based transmission.

[0377] In the sidelink communication method provided by the embodiments of the present disclosure, Figure 5 is another sidelink communication method flowchart according to an exemplary embodiment. As Figure 5 indicated, the method can further include the following steps:

[0378] In step S41, the first device performs sidelink communication with the second device based on the target beam within a first time period after the first device indicates the beam report.

[0379] In some embodiments, the first device can perform sidelink communication with the second device based on the determined target beam within a first time period after the first device indicates the beam report.

[0380] It can be understood that the first time period can be a time period preset for the first device to perform sidelink communication with the second device based on the target beam. It can be predefined in the protocol, or it can be indicated by the indication information.

[0381] In some embodiments, the first time period can be determined in the following manner.

[0382] In some embodiments, the first device determines a first time point after the beam report. A time period after the first time point is the first time period. Wherein, the time period from after the first device determines the beam report until the first time point, can be used for the first device to prepare for beam switching.

[0383] In some embodiments, the first device determines a first time duration after the beam report. A time period after the first device determines the beam report for the first time duration is the first time period. Wherein, the time period from after the first device determines the beam report for the first time duration, can be used for the first device to prepare for beam switching.

[0384] In some embodiments, the first device determines a second time point after the beam report. A time period from after the first device determines the beam report until the second time point is the first time period. The second time point can represent a valid time point of the target beam. That is, the first device allows the target beam to be used for sidelink communication with the second device before the second time point.

[0385] In some embodiments, the first device determines a second time duration after the beam report. A time period after the first device determines the beam report for the second time duration is the first time period. The second time duration can represent a valid time period of the target beam. That is, the first device allows the target beam to be used for sidelink communication with the second device within the second time duration.

[0386] In some embodiments, the first device determines a first time point and a second time point after the beam report. A time period from after the first device determines the beam report until the second time point is the first time period.

[0387] In some embodiments, the first device determines a first time point and a second time duration after the beam report. A time period from after the first device determines the beam report until the second time duration is the first time period.

[0388] In some embodiments, the first device determines a first time duration and a second time point after the beam report. A time period from after the first device determines the beam report for the first time duration until the second time point is the first time period.

[0389] In some embodiments, the first device determines a first time duration and a second time duration after the beam report. A time period from after the first device determines the beam report for the first time duration until the second time duration is the first time period.

[0390] If the first time period is exceeded, the target beam is invalidated, and the first device cannot perform sidelink communication with the second device based on the target beam.

[0391] It can be understood that the disclosure does not limit the manner of determining the first time period.

[0392] The present disclosure also provides a first time period, during which sidelink communication can be performed based on the target beam, thereby improving the performance of sidelink beam-based transmission.

[0393] The sidelink communication method provided by the embodiments of the present disclosure is performed after the first device performs beam switching and during the time period in which the target beam is valid, wherein the target beam valid means that the first device is allowed to perform sidelink communication with the second device based on the target beam.

[0394] In some embodiments, the first time period can be after the first device performs beam switching and during the time period in which the target beam is valid.

[0395] For example, the first device determines a first time point and a second time point after determining the beam report. The first time period is the time period from after the first time point to before the second time point after the first device determines the beam report.

[0396] For another example, the first device determines a first time point and a second time period after determining the beam report. The first time period is the second time period after the first time point after the first device determines the beam report.

[0397] For another example, the first device determines a first time period and a second time point after determining the beam report. The first time period is the time period from after the first time period to before the second time point after the first device determines the beam report.

[0398] For another example, the first device determines a first time period and a second time period after determining the beam report. The first time period is the second time period after the first time period after the first device determines the beam report.

[0399] The present disclosure can perform sidelink communication based on the target beam after the first device performs beam switching and during the time period in which the target beam is valid, thereby improving the performance of sidelink beam-based transmission.

[0400] Based on the same concept, the present disclosure also provides a sidelink communication method performed by a second device.

[0401] Figure 6 Another sidelink communication method flowchart is shown according to an exemplary embodiment, as shown in Figure 6 The method is performed by the second device, and the method can include the following steps:

[0402] In step S51, indication information is sent to the first device.

[0403] In step S52, sidelink communication is performed with the first device based on the target beam.

[0404] In some embodiments, the first device can be the first terminal 102 described above, and the second device can be the second terminal 103 described above; or the first device can be the second terminal 103 described above, and the second device can be the first terminal 102 described above.

[0405] In some embodiments, the second device can send indication information to the first device. The indication information is used to indicate a target beam for sidelink communication. The second device can perform sidelink communication with the first device based on the target beam.

[0406] For example, the second device sends information to the first device based on the target beam, or receives information sent by the first device.

[0407] The present disclosure improves the performance of sidelink beam-based transmission by indicating a target beam used for sidelink communication and performing sidelink communication based on the target beam.

[0408] In the sidelink communication method provided by the embodiments of the present disclosure, the target beam is used for channel transmission and / or signal transmission of the sidelink. The channel can include at least one of the following: PSSCH; PSCCH; PSFCH; PSBCH. The signal can include at least one of the following: S-SS / PSBCH Block; sidelink CSI-RS; sidelink DMRS; sidelink PT-RS.

[0409] In some embodiments, the target beam for sidelink communication can be used for channel transmission of the sidelink.

[0410] In some embodiments, the target beam for sidelink communication can be used for signal transmission of the sidelink.

[0411] In some embodiments, the target beam for sidelink communication can be used for channel transmission and signal transmission of the sidelink.

[0412] In some embodiments, the channel can include PSSCH.

[0413] In some embodiments, the channel can include PSCCH.

[0414] In some embodiments, the channel can include PSFCH.

[0415] In some embodiments, the channel can include PSBCH.

[0416] In some embodiments, the channel can further include: PSSCH, PSCCH; PSSCH, PSFCH; PSSCH, PSBCH; PSCCH, PSFCH; PSCCH, PSBCH; PSFCH, PSBCH; PSSCH, PSCCH, PSFCH; PSSCH, PSCCH, PSBCH; PSSCH, PSFCH, PSBCH; PSCCH, PSFCH, PSBCH; PSSCH, PSCCH, PSFCH, PSBCH.

[0417] In some embodiments, the signal can include an S-SS / PSBCH Block.

[0418] In some embodiments, the signal can include a sidelink CSI-RS.

[0419] In some embodiments, the signal can include a sidelink DMRS.

[0420] In some embodiments, the signal can include a sidelink PT-RS.

[0421] In some embodiments, the signal can further include: S-SS / PSBCH Block, sidelink CSI-RS; S-SS / PSBCH Block, sidelink DMRS; S-SS / PSBCH Block, sidelink PT-RS; sidelink CSI-RS, sidelink DMRS; sidelink CSI-RS, sidelink PT-RS; sidelink DMRS, sidelink PT-RS; S-SS / PSBCH Block, sidelink CSI-RS, sidelink DMRS; S-SS / PSBCH Block, sidelink CSI-RS, sidelink PT-RS; S-SS / PSBCH Block, sidelink DMRS, sidelink PT-RS; sidelink CSI-RS, sidelink DMRS, sidelink PT-RS; S-SS / PSBCH Block, sidelink CSI-RS, sidelink DMRS, sidelink PT-RS.

[0422] The present disclosure is applicable to sidelink communication of various channels and / or signals, and the sidelink communication can be performed based on a target beam by indicating the target beam used for sidelink communication, thereby improving the performance of sidelink beam-based transmission.

[0423] In the sidelink communication method provided by the embodiments of the present disclosure, the target beams used for transmission of different channels or signals are the same; or the target beams used for transmission of different channels or signals are different, and each target beam corresponds to one or more channels / signals.

[0424] In some embodiments, the target beams used for transmission of different channels can be the same.

[0425] For example, the same default rules can be used to determine that different channels transmit the same target beam. Alternatively, signaling can be used to indicate that different channels transmit the same target beam; for instance, the same signaling can be used to indicate the target beam transmitted on different channels.

[0426] In some embodiments, the target beam used for different signal transmissions may be the same.

[0427] For example, different signals can be determined to transmit the same target beam based on the same default rules. Alternatively, different signals can be instructed to transmit the same target beam via signaling, for instance, using the same signaling to indicate the target beam for different signals.

[0428] In some embodiments, the target beams used for transmission on different channels may be different. Each target beam corresponds to one or more channels.

[0429] For example, different target beams can be determined for different channels based on different default rules. Alternatively, different target beams can be indicated for different channels using multiple signaling methods.

[0430] In some embodiments, the target beams used for different signal transmissions may be different. Each target beam corresponds to one or more signals.

[0431] For example, different target beams can be determined for different signals based on different default rules. Alternatively, different signals can be instructed to transmit different target beams using multiple signaling methods.

[0432] This disclosure determines that different channels / signals used for sidelink communication can be the same or different target beams, making it applicable to different sidelink communication scenarios. In the corresponding scenario, by determining the target beam used for sidelink communication, sidelink communication is performed based on the target beam, thereby improving the performance of beam-based transmission in sidelinks.

[0433] In the sidelink communication method provided in this embodiment, the indication information includes a reference signal resource identifier; the channel / signal used for sidelink communication transmission between the first device and the second device has a quasi-co-address relationship with the reference signal corresponding to the reference signal resource identifier.

[0434] In some embodiments, the indication information may include a reference signal resource identifier.

[0435] It can be understood that the reference signal resource identifier is the reference signal resource identifier corresponding to the beam information.

[0436] Wherein, the identifier can be an ID or an index. For example, the reference signal resource identifier can be an S-SS / PSBCH Block resource index, a sidelink CSI-RS resource index, etc.

[0437] Wherein, the beam information can be used to indicate a target beam used by the sidelink communication. For example, the beam information can comprise at least one of: a sidelink spatial relation information; a sidelink spatial setting; a sidelink spatial RX parameter; a sidelink Tx spatial filter; a sidelink spatial domain receive filters; a sidelink spatial domain transmission filter; a sidelink TCI state; a sidelink QCL type D.

[0438] In some embodiments, the beam information can comprise a sidelink spatial relation information.

[0439] In some embodiments, the beam information can comprise a sidelink spatial setting.

[0440] In some embodiments, the beam information can comprise a sidelink spatial RX parameter.

[0441] In some embodiments, the beam information can comprise a sidelink Tx spatial filter.

[0442] In some embodiments, the beam information can comprise a sidelink spatial domain receive filters.

[0443] In some embodiments, the beam information can comprise a sidelink spatial domain transmission filter.

[0444] In some embodiments, the beam information can comprise a sidelink TCI state.

[0445] In some embodiments, the beam information can comprise a sidelink QCL type D.

[0446] In some embodiments, the beam information can further include: sidelink spatial relation information, sidelink spatial setting; sidelink spatial RX parameter, sidelink Tx spatial filter, sidelink spatial domain receive filters; sidelink spatial relation information, sidelink spatial setting, sidelink spatial RX parameter, sidelink Tx spatial filter; sidelink spatial relation information, sidelink spatial setting, sidelink spatial RX parameter, sidelink Tx spatial filter, sidelink spatial domain receive filters; sidelink spatial relation information, sidelink spatial setting, sidelink spatial RX parameter, sidelink Tx spatial filter, sidelink spatial domain receive filters, sidelink spatial domain transmission filter; sidelink spatial relation information, sidelink spatial setting, sidelink spatial RX parameter, sidelink Tx spatial filter, sidelink spatial domain receive filters, sidelink spatial domain transmission filter, sidelink TCI state; sidelink spatial relation information, sidelink spatial setting, sidelink spatial RX parameter, sidelink Tx spatial filter, sidelink spatial domain receive filters, sidelink spatial domain transmission filter, sidelink TCI state sidelink QCL typeD.

[0447] Of course, the beam information of the present disclosure can further include any two, three, four, five, six, seven or eight of the above, which are not listed one by one.

[0448] In some embodiments, a channel / signal used for sidelink communication transmission between the first device and the second device has a quasi co-location relationship with a reference signal identified by the reference signal resource identification. The reference signal corresponding to the reference signal resource identification corresponds to the beam information.

[0449] The present disclosure indicates a target beam applicable to sidelink communication by reference signal resource identification. So that sidelink communication can be performed based on the target beam, thereby improving the performance of sidelink beam-based transmission.

[0450] In the sidelink communication method provided by the embodiments of the present disclosure, the indication information can include at least one of the following: first signaling for configuring a beam list; second signaling for activating one or more sets of beams in the beam list, each set of beams including at least one target beam; and third signaling for indicating a codepoint corresponding to a set of beams in the multiple sets of beams.

[0451] In some embodiments, the indication information can include first signaling. The first signaling can be used to configure a beam list.

[0452] In some embodiments, the indication information can include second signaling. The second signaling can be used to activate one or more sets of beams in the beam list.

[0453] Each set of beams can include one or more target beams.

[0454] In some embodiments, the indication information can include third signaling. The third signaling can be used to indicate a codepoint corresponding to a set of beams in the multiple sets of beams.

[0455] It can be understood that one beam list can include one or more sets of beams, and each set of beams can include one or more beams.

[0456] The present disclosure can indicate a target beam applicable to sidelink communication through one or more signaling. So that sidelink communication can be performed based on the target beam, thereby improving the performance of sidelink beam-based transmission.

[0457] In the sidelink communication method provided by the embodiments of the present disclosure, in response to the number of beams configured by the first signaling being greater than a number threshold, the indication information includes second signaling.

[0458] In some embodiments, in response to the number of beams configured by the first signaling being greater than a pre-set number threshold, the indication information should also include second signaling. That is, the indication information includes the first signaling and the second signaling.

[0459] For example, when the number of beams configured by the first signaling is large, for example, greater than a preset number threshold. In this case, the target beam for sidelink communication can be activated by the second signaling.

[0460] For example, even if the codepoint in the third signaling cannot correspond to all the beams in the beam list, the second signaling is needed for activation. For example, the indication information contains 3 bits in the third signaling, which can support a maximum of 8 codepoints. If each codepoint corresponds to a set of beams, and the number of beams in the beam list configured by the first signaling is greater than 8 sets of beams, the second signaling is needed to activate a maximum of 8 sets of beams in the beam list configured by the first signaling.

[0461] The present disclosure can activate the target beam suitable for sidelink communication by the second signaling when the number of beams configured by the first signaling is large. In this way, the sidelink communication can be performed based on the target beam, thereby improving the performance of sidelink transmission based on the beam.

[0462] In the sidelink communication method provided by the embodiments of the present disclosure, a set of beams is activated in response to the second signaling, and the set of beams is used for sidelink communication.

[0463] In some embodiments, in the case of activating a set of beams in response to the second signaling, the activated set of beams can be used for sidelink communication.

[0464] For example, the set of beams activated by the second signaling can be directly used for sidelink channel / signal transmission.

[0465] It can be understood that since the set of beams only corresponds to one codepoint in the third signaling, the third signaling can not be needed for codepoint indication.

[0466] The second signaling of the present disclosure can activate a set of target beams suitable for sidelink communication. In this way, the sidelink communication can be performed based on the target beam, thereby improving the performance of sidelink transmission based on the beam.

[0467] In the sidelink communication method provided by the embodiments of the present disclosure, a plurality of sets of beams are activated in response to the second signaling, and each set of beams in the plurality of sets of beams corresponds to one codepoint.

[0468] In some embodiments, in response to the second signaling activating a plurality of sets of beams, each set of beams in the plurality of sets of beams can correspond to one codepoint.

[0469] It can be understood that the codepoint corresponding to each set of beam pairs is the codepoint indicated by the third signaling. In this case, the indication information also needs to include the third signaling, which is used to indicate a codepoint. The third signaling can determine the set of beams corresponding to the codepoint in the multiple sets of beams in the second signaling, and perform sidelink communication based on the set of beams corresponding to the codepoint.

[0470] The second signaling of the present disclosure activates multiple sets of target beams suitable for sidelink communication, which can have a corresponding relationship with the codepoint in the third signaling. In this way, the target beam suitable for sidelink communication can be determined through the codepoint, and sidelink communication is performed based on the target beam, thereby improving the performance of sidelink beam-based transmission.

[0471] In the sidelink communication method provided by the embodiments of the present disclosure, the set of beams activated by the second signaling includes at least one target beam, and the multiple target beams in the at least one target beam correspond to multiple panels, and the multiple panels are multiple panels of the first device and / or the second device.

[0472] In some embodiments, the set of beams activated by the second signaling can include at least one target beam. In the case that the at least one target beam is multiple target beams, the multiple target beams can correspond to multiple panels. The multiple panels can be multiple panels of the first device.

[0473] In some embodiments, the set of beams activated by the second signaling can include at least one target beam. In the case that the at least one target beam is multiple target beams, the multiple target beams can correspond to multiple panels. The multiple panels can be multiple panels of the second device.

[0474] In some embodiments, the set of beams activated by the second signaling can include at least one target beam. In the case that the at least one target beam is multiple target beams, the multiple target beams can correspond to multiple panels. The multiple panels can be multiple panels of the first device and the second device.

[0475] The multiple target beams included in the set of beams activated by the second signaling of the present disclosure can correspond to multiple panels, and sidelink communication can be performed based on the target beam suitable for sidelink communication using different panels. In this way, the performance of sidelink beam-based transmission is improved.

[0476] In the sidelink communication method provided by the embodiments of the present disclosure, the codepoint indicated by the third signaling is indicated by the beam indication field of the sidelink control information, and the codepoint has a corresponding relationship with the beam identifier.

[0477] In some embodiments, the codepoint indicated by the third signaling can be indicated by a beam indication field of the SCI. Wherein, the codepoint and the beam identifier have a corresponding relationship.

[0478] For example, the codepoint indicated by the third signaling can be indicated by a beam indication field of the SCI. The codepoint indicated by the beam indication field of the SCI has a corresponding relationship with the beam ID.

[0479] For example, the third signaling is a beam indication field of the SCI.

[0480] The codepoint indicated by the third signaling in the present disclosure can be indicated by a beam indication field of the SCI, so as to indicate a target beam suitable for sidelink communication, and perform sidelink communication based on the target beam, thereby improving the performance of sidelink transmission based on beams.

[0481] The sidelink communication method provided by the embodiments of the present disclosure has the corresponding relationship indicated by the first signaling or the second signaling, or the corresponding relationship is determined based on a default rule.

[0482] In some embodiments, the corresponding relationship between the codepoint indicated by the beam indication field of the SCI and the beam identifier can be indicated by the first signaling.

[0483] In some embodiments, the corresponding relationship between the codepoint indicated by the beam indication field of the SCI and the beam identifier can be indicated by the second signaling.

[0484] In some embodiments, the corresponding relationship between the codepoint indicated by the beam indication field of the SCI and the beam identifier can be determined by a default rule.

[0485] The present disclosure provides a plurality of ways to indicate the corresponding relationship between the codepoint and the beam, so as to indicate a target beam suitable for sidelink communication, and perform sidelink communication based on the target beam, thereby improving the performance of sidelink transmission based on beams.

[0486] In the sidelink communication method provided by the embodiments of the present disclosure, the SCI can include at least one of the following: first-stage SCI 1-A; second-stage SCI 2-A; second-stage SCI 2-B; second-stage SCI 2-C; and other SCI different from the first-stage SCI 1-A, the second-stage SCI 2-A, the second-stage SCI 2-B, and the second-stage SCI 2-C.

[0487] In some embodiments, the SCI containing the beam indication field can be the first-stage SCI 1-A.

[0488] In some embodiments, the SCI containing the beam indication field can be the second stage SCI 2-A.

[0489] In some embodiments, the SCI containing the beam indication field can be the second stage SCI 2-B.

[0490] In some embodiments, the SCI containing the beam indication field can be the second stage SCI 2-C.

[0491] In some embodiments, the SCI containing the beam indication field can be other SCI different from the first stage SCI 1-A, the second stage SCI 2-A, the second stage SCI 2-B, and the second stage SCI 2-C.

[0492] It can be understood that the other SCI different from the first stage SCI 1-A, the second stage SCI 2-A, the second stage SCI 2-B, and the second stage SCI 2-C can be a newly defined SCI, which can be used to include the beam indication field.

[0493] In some embodiments, the SCI containing the beam indication field can be: the first stage SCI 1-A, the second stage SCI 2-A; the second stage SCI 2-B, the second stage SCI 2-C, the other SCI; the first stage SCI 1-A, the second stage SCI 2-A, the second stage SCI 2-B, the second stage SCI 2-C; the first stage SCI 1-A, the second stage SCI 2-A, the second stage SCI 2-B, the second stage SCI 2-C, the other SCI.

[0494] It can be understood that the SCI containing the beam indication field in the present disclosure can be any two, three, four, or five of the above, which will not be listed one by one.

[0495] It can be understood that the configuration of each of the above SCIs can refer to the description in the related art, which will not be repeated here.

[0496] The present disclosure is applicable to SCIs of various formats containing beam indication fields, so as to indicate target beams suitable for sidelink communication and perform sidelink communication based on the target beams, thereby improving the performance of sidelink beam-based transmission.

[0497] In the sidelink communication method provided by the embodiments of the present disclosure, the sidelink control information carrying the beam indication field further includes a beam measurement request field.

[0498] In some embodiments, the SCI carrying the beam indication field can further include a beam measurement request field.

[0499] It is understandable that the beam measurement request field can carry beam measurement requests. A beam measurement request is used to request a beam measurement to be performed.

[0500] This disclosed SCI may also include a beam measurement request field indicating that beam measurements are performed to obtain measurement results for each beam. This allows sidelink communication to be performed based on the beam with the best measurement quality from the measurement results, thereby improving the performance of beam-based transmission on the sidelink.

[0501] In the side-link communication method provided in this embodiment, the first signaling is carried in the RRC sent by the second device through the PC5 interface; or the first signaling is carried in the side-link MAC CE.

[0502] In some embodiments, the first signaling may be carried in an RRC sent by the second device via the PC5 interface.

[0503] In some embodiments, the first signaling may be carried in a sidelink MAC CE.

[0504] For example, the second device indicates the first signaling via the sidelink MAC CE.

[0505] This disclosure provides multiple bearer methods for first signaling to indicate a target beam. Sidelink communication based on the target beam improves the performance of beam-based transmission on the sidelink.

[0506] In the sidelink communication method provided in this embodiment, the second signaling is carried in the sidelink MAC CE.

[0507] In some embodiments, the second signaling may be carried in a sidelink MAC CE.

[0508] This disclosure provides a second signaling bearer method to indicate a target beam. Sidelink communication is performed based on the target beam, thereby improving the performance of beam-based transmission on the sidelink.

[0509] In the side-link communication method provided in this embodiment, the third signaling is carried in SCI.

[0510] In some embodiments, third signaling may be carried in SCI.

[0511] This disclosure provides a method for carrying third signaling to indicate a target beam. Sidelink communication is performed based on the target beam, thereby improving the performance of beam-based transmission on the sidelink.

[0512] In the side-link communication method provided in the embodiments of this disclosure Figure 7 This is a flowchart illustrating yet another sidelink communication method according to an exemplary embodiment. For example... Figure 7 As shown, the method may also include the following steps:

[0513] In step S61, the target beam is determined based on the beam report indicated by the first device.

[0514] In some embodiments, the second device can determine the target beam for sidelink communication based on the beam report indicated by the first device. So as to perform sidelink communication with the first device by using the target beam.

[0515] It can be understood that the first device can measure the beams to obtain the beam report. For example, when the first device receives a beam measurement request, the beam measurement can be determined based on the beam measurement request, and the corresponding beam report can be generated after the measurement is completed. The beam report can be sent by the first terminal to the second terminal; or the network device can send the beam report to the second terminal after the first terminal reports to the network device, and the specific way of obtaining the beam report indicated by the first terminal by the second terminal is not limited in the disclosure.

[0516] The disclosure can also determine the target beam for sidelink communication based on the beam report indicated by the first device. So as to perform sidelink communication based on the target beam, thereby improving the performance of sidelink beam transmission.

[0517] In the sidelink communication method provided by the embodiments of the disclosure, the beam report includes at least one of the following: N beam identifiers and beam qualities corresponding to the N beam identifiers. Wherein, N is a positive integer.

[0518] In some embodiments, the beam report can include N beam identifiers.

[0519] For example, when the beam report is an explicit report, the beam report can include N beam identifiers.

[0520] In some embodiments, the beam report can include beam qualities corresponding to the N beam identifiers.

[0521] For example, when the beam report is an explicit report, the beam report can include beam qualities corresponding to the N beam identifiers.

[0522] In the embodiments of the disclosure, the beam quality includes at least one of the following sequence numbers a to sequence numbers e:

[0523] a. L1-RSRP;

[0524] b. L1-SINR;

[0525] c. L3-RSRP;

[0526] d. L3-RSRQ;

[0527] e. L3-SINR.

[0528] Of course, the beam quality can also include more possible parameters, which are not limited by the present disclosure.

[0529] The present disclosure can also indicate the target beam based on multiple parameters included in the explicit beam report. The sidelink communication is performed based on the target beam, thereby improving the performance of sidelink beam-based transmission.

[0530] In the sidelink communication method provided by the embodiments of the present disclosure, the beam identifier is the reference signal resource identifier corresponding to the beam. The reference signal resource identifier can include at least one of the following: sidelink CSI-RS resource identifier; sidelink synchronization signal and physical broadcast channel S-SS / PSBCH block identifier; slot identifier corresponding to the reference signal resource; mini-slot identifier corresponding to the reference signal resource.

[0531] In some embodiments, the beam identifier can be the reference signal resource identifier corresponding to the beam.

[0532] For example, the reference signal resource identifier can be a reference signal resource ID.

[0533] In some embodiments, the reference signal resource identifier can include a sidelink CSI-RS resource identifier.

[0534] For example, the sidelink CSI-RS resource identifier can be a sidelink CSI-RS resource ID.

[0535] In some embodiments, the reference signal resource identifier can include an S-SS / PSBCH block resource identifier.

[0536] It can be understood that the sidelink S-SS / PSBCH block is the S-SS / PSBCH Block mentioned above.

[0537] For example, the S-SS / PSBCH block resource identifier can be an S-SS / PSBCH Block resource ID.

[0538] In some embodiments, the reference signal resource identifier can include a slot identifier corresponding to the reference signal resource.

[0539] For example, the slot identifier corresponding to the reference signal resource can be a slot ID corresponding to the reference signal resource.

[0540] In some embodiments, the reference signal resource identifier can include a mini-slot identifier corresponding to the reference signal resource.

[0541] For example, the mini-slot identifier corresponding to the reference signal resource can be a mini-slot ID corresponding to the reference signal resource.

[0542] Wherein, the mini-slot is relative to the slot granularity. When the slot granularity is used for scheduling, the occupied symbol number is minimum 3; the occupied symbol number of the mini-slot can be 1 or 2. Moreover, one slot can contain multiple scheduling units of the mini-slot. One mini-slot can also occupy the symbols of two adjacent slots.

[0543] The present disclosure provides multiple forms of reference signal resource identification to indicate the target beam. The sidelink communication is performed based on the target beam, thereby improving the performance of the sidelink beam-based transmission.

[0544] In the sidelink communication method provided by the embodiments of the present disclosure, in response to the value of N being 1, the target beam is the beam corresponding to one beam identifier in the beam report.

[0545] In some embodiments, in response to the value of N being 1, the target beam can be the beam corresponding to the only one beam identifier in the beam report.

[0546] That is, only one beam identifier or the beam quality corresponding to one beam identifier is included in the beam report, so the beam corresponding to the beam identifier or the beam quality corresponding to the beam identifier can be taken as the target beam.

[0547] The present disclosure indicates the target beam through the parameters included in the beam report. The sidelink communication is performed based on the target beam, thereby improving the performance of the sidelink beam-based transmission.

[0548] In the sidelink communication method provided by the embodiments of the present disclosure, in response to the value of N being a positive integer greater than 1, the target beam is the beam with the maximum beam quality among the N beams corresponding to the N beam identifiers in the beam report, or the target beam is the beam corresponding to the beam identifier with the lowest bit position in the beam report.

[0549] In some embodiments, in response to the value of N being a positive integer greater than 1, the target beam can be the beam with the maximum beam quality among the N beams corresponding to the N beam identifiers.

[0550] For example, when the beam includes multiple beam qualities corresponding to multiple beam identifiers, the beam corresponding to the beam identifier with the maximum beam quality is taken as the target beam.

[0551] In some embodiments, in response to the value of N being a positive integer greater than 1, the target beam can be the beam corresponding to the beam identifier with the lowest bit position in the beam report.

[0552] For example, multiple beam identifications are included in the beam report, and the multiple beam identifications are recorded at different bit positions in the beam report. The beam corresponding to the beam identification at the lowest bit position in the beam report can be taken as the target beam.

[0553] The present disclosure indicates the target beam through multiple parameters included in the beam report. The sidelink communication is performed based on the target beam, thereby improving the performance of sidelink beam-based transmission.

[0554] In the sidelink communication method provided by the embodiments of the present disclosure, the beam report is implicitly indicated based on the PSFCH carrying the HARQ feedback of the PSSCH, and the target beam is the beam corresponding to the reference signal on the specified reference signal resource. The specified reference signal resource has a corresponding relationship with the specified PSSCH, and the specified PSSCH is the PSSCH corresponding to the PSFCH carrying the HARQ feedback.

[0555] In some embodiments, the beam report can be implicitly indicated. The beam report can be implicitly indicated based on the PSFCH carrying the HARQ feedback of the PSSCH. The target beam indicated by the beam report can be the beam corresponding to the reference signal on the specified reference signal resource. The specified reference signal resource has a corresponding relationship with the PSSCH corresponding to the PSFCH carrying the HARQ feedback, i.e., the specified PSSCH.

[0556] For example, each sidelink CSI-RS resource for beam measurement has a corresponding relationship with a PSSCH. The PSFCH resources corresponding to each PSSCH are different. The HARQ feedback corresponding to the PSSCH can be sent on the PSFCH of the PSSCH corresponding to the selected beam, for example, the HARQ ACK feedback or the HARQ NACK feedback. Then, the beam report implicitly indicates which beam is selected, i.e., the specified target beam is the sidelink CSI-RS resource corresponding to the PSSCH corresponding to the specified PSFCH.

[0557] For example, the first sidelink CSI-RS resource has a corresponding relationship with the first PSSCH, and the first PSSCH corresponds to the first PSFCH; the second sidelink CSI-RS resource has a corresponding relationship with the second PSSCH, and the second PSSCH corresponds to the second PSFCH. If the first device selects the beam corresponding to the first sidelink CSI-RS resource as the target beam after measurement, the HARQ ACK / NACK corresponding to the first PSSCH is fed back on the first PSFCH, indicating that the first device selects the beam corresponding to the first sidelink CSI-RS resource as the target beam.

[0558] The correspondence between the specified PSSCH and the specified reference signal resource can include at least one of the following: the specified PSSCH and the specified reference signal resource are transmitted in the same time slot; the specified PSSCH and the specified reference signal resource are transmitted in an FDM manner; and the specified PSSCH and the specified reference signal resource are transmitted in a TDM manner.

[0559] The present disclosure implicitly indicates a target beam through a beam report to perform sidelink communication based on the target beam, thereby improving the performance of sidelink beam-based transmission.

[0560] The sidelink communication method provided by the embodiments of the present disclosure can include the following steps. Figure 8 FIG. 8 is a flowchart of another sidelink communication method according to an example embodiment. As shown in FIG. 8, the method can further include the following steps: Figure 8

[0561] In step S71, the first device performs sidelink communication with the second device based on the target beam within a first time period after the first device indicates the beam report.

[0562] In some embodiments, the second device can perform sidelink communication with the second device based on the determined target beam within a first time period after the first device indicates the beam report.

[0563] It can be understood that the first time period can be a time period preset for the first device to perform sidelink communication with the second device based on the target beam. It can be predefined in a protocol or indicated by the indication information sent by the second device.

[0564] In some embodiments, the first time period can be determined in the following manner.

[0565] In some embodiments, the second device determines a first time point after the beam report. The time period after the first time point is the first time period. The time period between the time when the second device determines the beam report and the first time point can be used for the second device to prepare for beam switching.

[0566] In some embodiments, the second device determines a first time period after the beam report. The time period after the first time period after the second device determines the beam report is the first time period. The time period within the first time period after the second device determines the beam report can be used for the second device to prepare for beam switching.

[0567] ​In some embodiments, the second device determines a second time point after the beam report. The time period from after the second device determines the beam report to before the second time point is the first time period. The second time point can represent a valid time point of the target beam. That is, the second device allows the target beam to be used for sidelink communication with the first device before the second time point.

[0568] In some embodiments, the second device determines a second time duration after the beam report. The time period from after the second device determines the beam report to the second time duration is the first time period. The second time duration can represent a valid time period of the target beam. That is, the second device allows the target beam to be used for sidelink communication with the first device within the second time duration.

[0569] In some embodiments, the second device determines a first time point and a second time point after the beam report. The time period from after the second device determines the first time point to before the second time point is the first time period.

[0570] In some embodiments, the second device determines a first time point and a second time duration after the beam report. The time period from after the second device determines the first time point to the second time duration is the first time period.

[0571] In some embodiments, the second device determines a first time duration and a second time point after the beam report. The time period from after the second device determines the first time duration to before the second time point is the first time period.

[0572] In some embodiments, the second device determines a first time duration and a second time duration after the beam report. The time period from after the second device determines the first time duration to the second time duration is the first time period.

[0573] If the first time period is exceeded, the target beam is invalidated, and the second device cannot communicate with the first device based on the target beam.

[0574] It can be understood that the disclosure does not limit the manner of determining the first time period.

[0575] The disclosure also provides the first time period for sidelink communication based on the target beam within the first time period, thereby improving the performance of sidelink beam-based transmission.

[0576] In the sidelink communication method provided by the embodiments of the disclosure, the first time period is within a time period after the second device performs beam switching and within a time period in which the target beam is valid, where the target beam being valid means that the second device is allowed to perform sidelink communication with the first device based on the target beam.

[0577] In some embodiments, the first time period can be within a time period after the second device performs beam switching and within a time period in which the target beam is valid.

[0578] For example, the second device determines a first time point and a second time point after the beam report. The first time period is the time period from after the first time point to before the second time point after the second device determines the beam report.

[0579] For another example, the second device determines a first time point and a second time period after the beam report. The first time period is the second time period after the first time point after the second device determines the beam report.

[0580] For another example, the second device determines a first time period and a second time point after the beam report. The first time period is the time period from after the first time period to before the second time point after the second device determines the beam report.

[0581] For another example, the second device determines a first time period and a second time period after the beam report. The first time period is the second time period after the first time period after the second device determines the beam report.

[0582] The present disclosure can perform sidelink communication based on the target beam after the second device performs beam switching, and within the time period during which the target beam is valid, thereby improving the performance of sidelink beam-based transmission.

[0583] Based on the same concept, the present disclosure also provides a sidelink communication method performed by a network device.

[0584] Figure 9 Another sidelink communication method flowchart according to an exemplary embodiment is shown in FIG. 8. As shown in FIG. 8, the method is performed by a network device, and the method can include the following steps: Figure 9

[0585] In step S81, the indication information is sent to the first device.

[0586] In some embodiments, the network device can send the indication information to the first device. The indication information can be used to indicate the target beam used for sidelink communication, and the target beam is used for the first device to perform sidelink communication with the second device.

[0587] In some embodiments, the first device can be the first terminal 102 described above, and the second device can be the second terminal 103 described above; or the first device can be the second terminal 103 described above, and the second device can be the first terminal 102 described above. The network device can be the network device 101 described above.

[0588] The present disclosure indicates the target beam used for sidelink communication, and performs sidelink communication based on the target beam, thereby improving the performance of sidelink beam-based transmission.

[0589] ​In the sidelink communication method provided by the embodiments of the present disclosure, the target beam is used for channel transmission and / or signal transmission of the sidelink. The channel can include at least one of the following: PSSCH; PSCCH; PSFCH; PSBCH. The signal can include at least one of the following: S-SS / PSBCH Block; sidelink CSI-RS; sidelink DMRS; sidelink PT-RS.

[0590] In some embodiments, the target beam for sidelink communication can be used for channel transmission of the sidelink.

[0591] In some embodiments, the target beam for sidelink communication can be used for signal transmission of the sidelink.

[0592] In some embodiments, the target beam for sidelink communication can be used for both channel transmission and signal transmission of the sidelink.

[0593] In some embodiments, the channel can include PSSCH.

[0594] In some embodiments, the channel can include PSCCH.

[0595] In some embodiments, the channel can include PSFCH.

[0596] In some embodiments, the channel can include PSBCH.

[0597] In some embodiments, the channel can further include: PSSCH, PSCCH; PSSCH, PSFCH; PSSCH, PSBCH; PSCCH, PSFCH; PSCCH, PSBCH; PSFCH, PSBCH; PSSCH, PSCCH, PSFCH; PSSCH, PSCCH, PSBCH; PSSCH, PSFCH, PSBCH; PSCCH, PSFCH, PSBCH; PSSCH, PSCCH, PSFCH, PSBCH.

[0598] In some embodiments, the signal can include S-SS / PSBCH Block.

[0599] In some embodiments, the signal can include sidelink CSI-RS.

[0600] In some embodiments, the signal can include sidelink DMRS.

[0601] In some embodiments, the signal can include sidelink PT-RS.

[0602] In some embodiments, the signal can further include S-SS / PSBCH Block, Sidelink CSI-RS; S-SS / PSBCH Block, Sidelink DMRS; S-SS / PSBCH Block, Sidelink PT-RS; Sidelink CSI-RS, Sidelink DMRS; Sidelink CSI-RS, Sidelink PT-RS; Sidelink DMRS, Sidelink PT-RS; S-SS / PSBCH Block, Sidelink CSI-RS, Sidelink DMRS; S-SS / PSBCH Block, Sidelink CSI-RS, Sidelink PT-RS; S-SS / PSBCH Block, Sidelink DMRS, Sidelink PT-RS; Sidelink CSI-RS, Sidelink DMRS, Sidelink PT-RS; S-SS / PSBCH Block, Sidelink CSI-RS, Sidelink DMRS, Sidelink PT-RS.

[0603] The present disclosure is applicable to sidelink communication of multiple channels and / or signals, and the sidelink communication can be performed based on a target beam used for sidelink communication by indicating the target beam, thereby improving the performance of sidelink beam-based transmission.

[0604] In the sidelink communication method provided by the embodiments of the present disclosure, the target beams used for transmission of different channels or signals are the same; or the target beams used for transmission of different channels or signals are different, and each target beam corresponds to one or more channels / signals.

[0605] In some embodiments, the target beams used for transmission of different channels can be the same.

[0606] For example, the same target beams used for transmission of different channels can be determined based on the same default rule. For another example, the same target beams used for transmission of different channels can be indicated by signaling, such as using the same signaling to indicate the target beams used for transmission of different channels.

[0607] In some embodiments, the target beams used for transmission of different signals can be the same.

[0608] For example, the same target beams used for transmission of different signals can be determined based on the same default rule. For another example, the same target beams used for transmission of different signals can be indicated by signaling, such as using the same signaling to indicate the target beams used for transmission of different signals.

[0609] In some embodiments, the target beams used for transmission of different channels can be different. Each target beam corresponds to one or more channels.

[0610] For example, different target beams can be determined for different channels based on different default rules. For another example, different target beams can be indicated for different channels respectively by means of multiple signaling indications.

[0611] In some embodiments, target beams for different signals can be different. Each target beam corresponds to one or more signals.

[0612] For example, different target beams can be determined for different signals based on different default rules. For another example, different target beams can be indicated for different signals respectively by means of multiple signaling indications.

[0613] The present disclosure is applicable to different sidelink communication scenarios by determining that different channels / signals for sidelink communication can use the same or different target beams. In the respective scenarios, by determining the target beams used for sidelink communication, sidelink communication is performed based on the target beams, thereby improving the performance of sidelink beam-based transmission.

[0614] In the sidelink communication method provided by the embodiments of the present disclosure, the indication information includes a reference signal resource identifier; and the channel / signal used for sidelink communication transmission between the first device and the second device has a quasi-co-location relationship with a reference signal corresponding to the reference signal resource identifier.

[0615] In some embodiments, the indication information can include a reference signal resource identifier.

[0616] It can be understood that the reference signal resource identifier is a reference signal resource identifier corresponding to the beam information.

[0617] The identifier can be an ID or an index. For example, the reference signal resource identifier can be an S-SS / PSBCH Block resource index, a sidelink CSI-RS resource index, etc.

[0618] The beam information can be used to indicate the target beam used for sidelink communication. For example, the beam information can include at least one of the following: sidelink spatial relation information; sidelink spatial setting; sidelink spatial RX parameter; sidelink Tx spatial filter; sidelink spatial domain receive filter; sidelink spatial domain transmission filter; sidelink TCI state; and sidelink QCL typeD.

[0619] In some embodiments, the beam information can include sidelink spatial relation information.

[0620] In some embodiments, the beam information can include sidelink spatial setting.

[0621] In some embodiments, the beam information can include sidelink spatial RX parameter.

[0622] In some embodiments, the beam information can include sidelink Tx spatial filter.

[0623] In some embodiments, the beam information can include sidelink spatial domain receive filters.

[0624] In some embodiments, the beam information can include sidelink spatial domain transmission filter.

[0625] In some embodiments, the beam information can include sidelink TCI state.

[0626] In some embodiments, the beam information can include sidelink QCL type D.

[0627] In some embodiments, the beam information can further include: sidelink spatial relation information, sidelink spatial setting; sidelink spatial RX parameter, sidelink Tx spatial filter, sidelink spatial domain receive filters; sidelink spatial relation information, sidelink spatial setting, sidelink spatial RX parameter, sidelink Tx spatial filter; sidelink spatial relation information, sidelink spatial setting, sidelink spatial RX parameter, sidelink Tx spatial filter, sidelink spatial domain receive filters; sidelink spatial relation information, sidelink spatial setting, sidelink spatial RX parameter, sidelink Tx spatial filter, sidelink spatial domain receive filters, sidelink spatial domain transmission filter; sidelink spatial relation information, sidelink spatial setting, sidelink spatial RX parameter, sidelink Tx spatial filter, sidelink spatial domain receive filters, sidelink spatial domain transmission filter, sidelink TCI state; sidelink spatial relation information, sidelink spatial setting, sidelink spatial RX parameter, sidelink Tx spatial filter, sidelink spatial domain receive filters, sidelink spatial domain transmission filter, sidelink TCI state sidelink QCL typeD.

[0628] Of course, the beam information of the present disclosure can further include any two, three, four, five, six, seven or eight of the above, which are not listed one by one.

[0629] In some embodiments, a channel / signal used for sidelink communication transmission between the first device and the second device has a quasi co-location relationship with a reference signal identified by the reference signal resource identification. The reference signal corresponding to the reference signal resource identification corresponds to the beam information.

[0630] The present disclosure indicates a target beam applicable to sidelink communication by reference signal resource identification. So that sidelink communication can be performed based on the target beam, thereby improving the performance of sidelink beam-based transmission.

[0631] In the sidelink communication method provided by the embodiments of the present disclosure, the indication information can include at least one of the following: first signaling for configuring a beam list; second signaling for activating one or more sets of beams in the beam list, each set of beams including at least one target beam; and third signaling for indicating a codepoint corresponding to a set of beams in the multiple sets of beams.

[0632] In some embodiments, the indication information can include first signaling. The first signaling can be used to configure a beam list.

[0633] In some embodiments, the indication information can include second signaling. The second signaling can be used to activate one or more sets of beams in the beam list.

[0634] Each set of beams can include one or more target beams.

[0635] In some embodiments, the indication information can include third signaling. The third signaling can be used to indicate a codepoint corresponding to a set of beams in the multiple sets of beams.

[0636] It can be understood that a beam list can include one or more sets of beams, and each set of beams can include one or more beams.

[0637] The present disclosure can indicate a target beam applicable to sidelink communication through one or more signaling. So that sidelink communication can be performed based on the target beam, thereby improving the performance of sidelink beam-based transmission.

[0638] In the sidelink communication method provided by the embodiments of the present disclosure, in response to the number of beams configured by the first signaling being greater than a number threshold, the indication information includes second signaling.

[0639] In some embodiments, in response to the number of beams configured by the first signaling being greater than a pre-set number threshold, the indication information should also include second signaling. That is, the indication information includes the first signaling and the second signaling.

[0640] For example, when the number of beams configured by the first signaling is large, for example, greater than a preset number threshold. In this case, the target beam for sidelink communication can be activated by the second signaling.

[0641] For example, even if the codepoint in the third signaling cannot correspond to all the beams in the beam list, the second signaling is needed for activation. For example, the indication information contains 3 bits in the third signaling, which can support a maximum of 8 codepoints. If each codepoint corresponds to a set of beams, and the number of beams in the beam list configured by the first signaling is greater than 8 sets of beams, the second signaling is needed to activate a maximum of 8 sets of beams in the beam list configured by the first signaling.

[0642] The present disclosure can activate the target beam suitable for sidelink communication by the second signaling when the number of beams configured by the first signaling is large. In this way, the sidelink communication can be performed based on the target beam, thereby improving the performance of sidelink transmission based on the beam.

[0643] In the sidelink communication method provided by the embodiments of the present disclosure, a set of beams is activated in response to the second signaling, and the set of beams is used for sidelink communication.

[0644] In some embodiments, in the case of activating a set of beams in response to the second signaling, the activated set of beams can be used for sidelink communication.

[0645] For example, the set of beams activated by the second signaling can be directly used for sidelink channel / signal transmission.

[0646] It can be understood that since the set of beams only corresponds to one codepoint in the third signaling, the third signaling can not be needed for codepoint indication.

[0647] The second signaling of the present disclosure can activate a set of target beams suitable for sidelink communication. In this way, the sidelink communication can be performed based on the target beam, thereby improving the performance of sidelink transmission based on the beam.

[0648] In the sidelink communication method provided by the embodiments of the present disclosure, a plurality of sets of beams are activated in response to the second signaling, and each set of beams in the plurality of sets of beams corresponds to one codepoint.

[0649] In some embodiments, in the case of activating a plurality of sets of beams in response to the second signaling, each set of beams in the plurality of sets of beams can correspond to one codepoint.

[0650] It can be understood that the codepoint corresponding to each set of beam pairs is the codepoint indicated by the third signaling. In this case, the indication information also needs to include the third signaling, which is used to indicate a codepoint. The third signaling can determine the set of beams corresponding to the codepoint in the multiple sets of beams in the second signaling, and perform sidelink communication based on the set of beams corresponding to the codepoint.

[0651] The second signaling of the present disclosure activates multiple sets of target beams suitable for sidelink communication, which can have a corresponding relationship with the codepoint in the third signaling. In this way, the target beam suitable for sidelink communication can be determined through the codepoint, and sidelink communication is performed based on the target beam, thereby improving the performance of sidelink beam-based transmission.

[0652] In the sidelink communication method provided by the embodiments of the present disclosure, the set of beams activated by the second signaling includes at least one target beam, and multiple target beams in the at least one target beam correspond to multiple panels, and the multiple panels are multiple panels of the first device and / or the second device.

[0653] In some embodiments, the set of beams activated by the second signaling can include at least one target beam. In the case that the at least one target beam is multiple target beams, the multiple target beams can correspond to multiple panels. The multiple panels can be multiple panels of the first device.

[0654] In some embodiments, the set of beams activated by the second signaling can include at least one target beam. In the case that the at least one target beam is multiple target beams, the multiple target beams can correspond to multiple panels. The multiple panels can be multiple panels of the second device.

[0655] In some embodiments, the set of beams activated by the second signaling can include at least one target beam. In the case that the at least one target beam is multiple target beams, the multiple target beams can correspond to multiple panels. The multiple panels can be multiple panels of the first device and the second device.

[0656] The multiple target beams included in the set of beams activated by the second signaling of the present disclosure can correspond to multiple panels, and sidelink communication can be performed based on the target beam suitable for sidelink communication using different panels. In this way, the performance of sidelink beam-based transmission is improved.

[0657] In the sidelink communication method provided by the embodiments of the present disclosure, the codepoint indicated by the third signaling has a corresponding relationship with the beam identifier.

[0658] In some embodiments, the codepoint indicated by the third signaling has a corresponding relationship with the beam identifier.

[0659] The codepoint of the third signaling indication has a corresponding relationship with the beam identifier, so as to indicate the beam suitable for the sidelink communication, and perform the sidelink communication based on the beam, thereby improving the performance of the sidelink transmission based on the beam.

[0660] The sidelink communication method provided in the embodiments of the present disclosure has the corresponding relationship indicated by the first signaling or the second signaling, or the corresponding relationship determined based on a default rule.

[0661] In some embodiments, the corresponding relationship between the codepoint and the beam identifier can be indicated by the first signaling.

[0662] In some embodiments, the corresponding relationship between the codepoint and the beam identifier can be indicated by the second signaling.

[0663] In some embodiments, the corresponding relationship between the codepoint and the beam identifier can be determined based on a default rule.

[0664] The present disclosure provides a plurality of ways to indicate the corresponding relationship between the codepoint and the beam, so as to indicate the target beam suitable for the sidelink communication, and perform the sidelink communication based on the target beam, thereby improving the performance of the sidelink transmission based on the beam.

[0665] In the sidelink communication method provided in the embodiments of the present disclosure, the first signaling is carried in the RRC sent by the network device.

[0666] In some embodiments, the first signaling can be carried in the RRC sent by the network device.

[0667] For example, the network device sends the RRC based on the Uu interface.

[0668] The present disclosure provides a carrying manner of the first signaling, so as to indicate the beam for beam measurement. The sidelink communication is performed based on the beam, thereby improving the performance of the sidelink transmission based on the beam.

[0669] It should be noted that those skilled in the art can understand that the various embodiments / embodiments described above in the embodiments of the present disclosure can be used in combination with the foregoing embodiments, or can be used independently. Whether it is used independently or in combination with the foregoing embodiments, the implementation principle is similar. In the embodiments of the present disclosure, some embodiments are described as embodiments used together. Of course, those skilled in the art can understand that such example description is not a limitation of the embodiments of the present disclosure.

[0670] Figure 10 is a schematic diagram of a sidelink communication system interaction according to an example embodiment.

[0671] As Figure 10As shown, the present disclosure provides a schematic flow chart of sidelink communication system interaction. The system can include a first device, a second device and a network device. The following steps can be included:

[0672] In step S91, the second device sends indication information to the first device.

[0673] In step S92, the network device sends indication information to the first device.

[0674] It can be understood that at least one of step S91 and step S92 is performed. Of course, both step S91 and step S92 can be performed. However, it is worth noting that there is no strict execution order between step S91 and step S92. That is, step S91 can be performed first and then step S92 can be performed. Alternatively, step S92 can be performed first and then step S91 can be performed. Alternatively, step S91 and step S92 can be performed simultaneously, and the present disclosure does not limit this.

[0675] In some embodiments, the indication information can be used to determine a target beam for sidelink communication.

[0676] In step S93, the first device performs sidelink communication with the second device based on the target beam.

[0677] In some embodiments, the first device can perform sidelink communication with the second device based on the target beam indicated by the indication information.

[0678] In some embodiments, the first device can also measure the beam based on the indication information to obtain a beam report. The first device can explicitly or implicitly determine the target beam through the beam report, and perform sidelink communication with the second device using the target beam.

[0679] The beam report can be sent directly by the first device to the second device, or the first device can report to the network device, and then the network device can inform the second device of the target beam. The specific way for the second device to obtain the target beam is not limited by the present disclosure.

[0680] It can be understood that Figure 10 The specific implementation process of each embodiment described above can refer to the corresponding description in the above Figures 2 to 9 , and the present disclosure will not be repeated here.

[0681] Based on the same concept, the present disclosure also provides a sidelink communication device.

[0682] It can be understood that, in order to achieve the above functions, the sidelink communication device provided by the embodiments of the present disclosure comprises the hardware structure and / or software module corresponding to the execution of each function. In combination with the units and algorithm steps of the examples disclosed in the embodiments of the present disclosure, the embodiments of the present disclosure can be realized in the form of hardware or a combination of hardware and computer software. Whether a certain function is realized by hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the technical solutions of the embodiments of the present disclosure.

[0683] Figure 11 is a schematic diagram of a sidelink communication device according to an example embodiment. Referring to Figure 11 The device 200 is configured in a first device, and the device 200 comprises: a processing module 201 configured to determine a target beam for sidelink communication; and a transmission module 202 configured to perform sidelink communication with a second device based on the target beam.

[0684] The present disclosure improves the performance of sidelink beam-based transmission by indicating the target beam used for sidelink communication and performing sidelink communication based on the target beam.

[0685] In some embodiments, the target beam is used for channel transmission and / or signal transmission of the sidelink; the channel comprises at least one of the following: a physical sidelink shared channel (PSSCH); a physical sidelink control channel (PSCCH); a physical sidelink feedback channel (PSFCH); a physical sidelink broadcast channel (PSBCH); and the signal comprises at least one of the following: a sidelink synchronization signal and a physical sidelink broadcast channel block; a sidelink channel state information reference signal (CSI-RS); a sidelink demodulation reference signal (DMRS); and a sidelink phase tracking reference signal (PT-RS).

[0686] The present disclosure is applicable to sidelink communication of various channels and / or signals, and can improve the performance of sidelink beam-based transmission by indicating the target beam used for sidelink communication and performing sidelink communication based on the target beam.

[0687] In some embodiments, the target beams for different channel or signal transmissions are the same; or the target beams for different channel or signal transmissions are different, and each target beam corresponds to one or more channels / signals.

[0688] The present disclosure is applicable to different sidelink communication scenarios by determining whether different channels / signals used for sidelink communication are the same or different target beams. In the respective scenarios, by determining the target beams used for sidelink communication, sidelink communication is performed based on the target beams, thereby improving the performance of sidelink beam-based transmission.

[0689] In some embodiments, the transmission module 202 is further configured to receive indication information sent by the second device and / or the network device, the indication information being used to indicate the target beams.

[0690] The present disclosure can indicate the target beams applicable to sidelink communication through the indication information. Therefore, sidelink communication can be performed based on the target beams, thereby improving the performance of sidelink beam-based transmission.

[0691] In some embodiments, the indication information includes a reference signal resource identifier; and the channel / signal used for sidelink communication transmission between the first device and the second device has a quasi-co-location relationship with a reference signal corresponding to the reference signal resource identifier.

[0692] The present disclosure can indicate the target beams applicable to sidelink communication through the reference signal resource identifier. Therefore, sidelink communication can be performed based on the target beams, thereby improving the performance of sidelink beam-based transmission.

[0693] In some embodiments, the indication information includes at least one of the following: first signaling used to configure a beam list; second signaling used to activate one or more sets of beams in the beam list, each set of beams including at least one target beam; and third signaling used to indicate a code point corresponding to a set of beams in the multiple sets of beams.

[0694] The present disclosure can indicate the target beams applicable to sidelink communication through one or more signals. Therefore, sidelink communication can be performed based on the target beams, thereby improving the performance of sidelink beam-based transmission.

[0695] In some embodiments, in response to the number of beams configured by the first signaling being greater than a threshold number, the indication information includes the second signaling.

[0696] The present disclosure can activate the target beams applicable to sidelink communication through the second signaling in the case where the number of beams configured by the first signaling is large. Therefore, sidelink communication can be performed based on the target beams, thereby improving the performance of sidelink beam-based transmission.

[0697] In some embodiments, in response to the activation of a set of beams by the second signaling, the set of beams is used for sidelink communication.

[0698] The second signaling of the present disclosure can activate a set of target beams suitable for sidelink communication. So that the sidelink communication can be performed based on the target beams, thereby improving the performance of sidelink beam-based transmission.

[0699] In some embodiments, in response to the second signaling activating a plurality of sets of beams, each set of beams in the plurality of sets of beams corresponds to a codepoint.

[0700] The second signaling of the present disclosure activates a plurality of sets of target beams suitable for sidelink communication, which can have a corresponding relationship with the codepoints in the third signaling. So that the target beams suitable for sidelink communication can be determined through the codepoints, and the sidelink communication can be performed based on the target beams, thereby improving the performance of sidelink beam-based transmission.

[0701] In some embodiments, the set of beams activated by the second signaling includes at least one target beam, and a plurality of target beams in the at least one target beam correspond to a plurality of panels, and the plurality of panels are a plurality of panels of the first device and / or the second device.

[0702] The plurality of target beams included in the set of beams activated by the second signaling of the present disclosure can correspond to a plurality of panels, and the sidelink communication can be performed based on the target beams suitable for sidelink communication using different panels. So that the performance of sidelink beam-based transmission is improved.

[0703] In some embodiments, the codepoint indicated by the third signaling is indicated by a beam indication field of sidelink control information, and the codepoint has a corresponding relationship with a beam identifier.

[0704] The codepoint indicated by the third signaling of the present disclosure can be indicated by a beam indication field of SCI, so as to indicate the target beams suitable for sidelink communication, and perform the sidelink communication based on the target beams, thereby improving the performance of sidelink beam-based transmission.

[0705] In some embodiments, the corresponding relationship is indicated by the first signaling or the second signaling, or the corresponding relationship is determined based on a default rule.

[0706] The present disclosure provides a variety of ways to indicate the corresponding relationship between the codepoint and the beam, so as to indicate the target beams suitable for sidelink communication, and perform the sidelink communication based on the target beams, thereby improving the performance of sidelink beam-based transmission.

[0707] In some embodiments, the sidelink control information includes at least one of the following: first-stage sidelink control information SCI 1-A; or second-stage SCI 2-A; or second-stage SCI 2-B; or second-stage SCI 2-C; or other sidelink control information different from the first-stage SCI 1-A, the second-stage SCI 2-A, the second-stage SCI 2-B, and the second-stage SCI 2-C.

[0708] The present disclosure is applicable to SCI containing a beam indication field in a plurality of different formats, so as to indicate a target beam applicable to sidelink communication, and perform sidelink communication based on the target beam, thereby improving the performance of sidelink beam-based transmission.

[0709] In some embodiments, the sidelink control information carrying the beam indication field further includes a beam measurement request field.

[0710] The SCI of the present disclosure can also contain a beam measurement request field to indicate beam measurement, thereby obtaining measurement results of each beam. So that sidelink communication can be performed based on the beam with better measurement quality in the measurement results, thereby improving the performance of sidelink beam-based transmission.

[0711] In some embodiments, the first signaling is carried in radio resource control signaling RRC sent by the network device; or the first signaling is carried in radio resource control signaling RRC sent by the second device through the PC5 interface; or the first signaling is carried in a sidelink medium access control control element MAC CE.

[0712] The present disclosure provides a plurality of carrying modes of the first signaling to indicate the target beam. Sidelink communication is performed based on the target beam, thereby improving the performance of sidelink beam-based transmission.

[0713] In some embodiments, the second signaling is carried in a sidelink medium access control control element MAC CE.

[0714] The present disclosure provides a carrying mode of the second signaling to indicate the target beam. Sidelink communication is performed based on the target beam, thereby improving the performance of sidelink beam-based transmission.

[0715] In some embodiments, the third signaling is carried in sidelink control information.

[0716] The present disclosure provides a carrying mode of the third signaling to indicate the target beam. Sidelink communication is performed based on the target beam, thereby improving the performance of sidelink beam-based transmission.

[0717] In some embodiments, the processing module 201 is further configured to determine the target beam based on the beam report indicated by the first device.

[0718] The present disclosure can also determine the target beam for sidelink communication based on the beam report indicated by the first device. Sidelink communication is performed based on the target beam, thereby improving the performance of sidelink beam-based transmission.

[0719] In some embodiments, the beam report comprises at least one of the following: N beam identifications, and beam qualities corresponding to the N beam identifications, N being a positive integer.

[0720] The present disclosure can also indicate the target beam based on multiple parameters included in the explicit beam report. The sidelink communication is performed based on the target beam, thereby improving the performance of sidelink beam-based transmission.

[0721] In some embodiments, the beam identification is a reference signal resource identification corresponding to the beam; the reference signal resource identification comprises at least one of the following: a sidelink channel state information reference signal (CSI-RS) resource identification; a sidelink synchronization signal and physical broadcast channel (S-SS / PSBCH) block identification; a time slot identification corresponding to the reference signal resource; a mini-slot identification corresponding to the reference signal resource.

[0722] The present disclosure provides multiple forms of reference signal resource identification to indicate the target beam. The sidelink communication is performed based on the target beam, thereby improving the performance of sidelink beam-based transmission.

[0723] In some embodiments, in response to the value of N being 1, the target beam is the beam corresponding to one beam identification in the beam report.

[0724] The present disclosure indicates the target beam through the parameters included in the beam report. The sidelink communication is performed based on the target beam, thereby improving the performance of sidelink beam-based transmission.

[0725] In some embodiments, in response to the value of N being a positive integer greater than 1, the target beam is the beam with the best beam quality among the N beams corresponding to the N beam identifications in the beam report, or the target beam is the beam corresponding to the beam identification with the lowest bit position in the beam report.

[0726] The present disclosure indicates the target beam through multiple parameters included in the beam report. The sidelink communication is performed based on the target beam, thereby improving the performance of sidelink beam-based transmission.

[0727] In some embodiments, the beam report is implicitly indicated based on the PSFCH carrying the physical hybrid automatic repeat request (HARQ) feedback of the PSSCH, and the target beam is the beam corresponding to the reference signal on the specified reference signal resource; wherein the specified reference signal resource has a corresponding relationship with the specified PSSCH, and the specified PSSCH is the PSSCH corresponding to the PSFCH carrying the HARQ feedback.

[0728] The present disclosure implicitly indicates the target beam through the beam report, so as to perform the sidelink communication based on the target beam, thereby improving the performance of sidelink beam-based transmission.

[0729] In some embodiments, the transmission module 202 is further configured to perform sidelink communication with the second device based on the target beam within a first time period after the first device indicates the beam report.

[0730] The present disclosure further provides the first time period, so that the sidelink communication can be performed based on the target beam within the first time period, thereby improving the performance of the sidelink beam-based transmission.

[0731] In some embodiments, the first time period is within a time period after the first device performs beam switching and within a time period during which the target beam is valid, wherein the target beam being valid means that the first device is allowed to perform sidelink communication with the second device based on the target beam.

[0732] The present disclosure can perform sidelink communication based on the target beam within a time period after the first device performs beam switching and within a time period during which the target beam is valid, thereby improving the performance of the sidelink beam-based transmission.

[0733] Figure 12 FIG. 3 is another schematic diagram of a sidelink communication device according to an example embodiment. Referring to FIG. 3, Figure 12 The device 300 is configured in the second device, and the device 300 includes a transmission module 301 configured to send indication information to the first device, the indication information being used to indicate a target beam for sidelink communication; the transmission module 301 is further configured to perform sidelink communication with the first device based on the target beam.

[0734] The present disclosure can perform sidelink communication based on the target beam by indicating the target beam used for sidelink communication, thereby improving the performance of the sidelink beam-based transmission.

[0735] In some embodiments, the target beam is used for channel transmission and / or signal transmission of the sidelink; the channel includes at least one of the following: a physical sidelink shared channel (PSSCH); a physical sidelink control channel (PSCCH); a physical sidelink feedback channel (PSFCH); a physical sidelink broadcast channel (PSBCH); the signal includes at least one of the following: a sidelink synchronization signal and a physical sidelink broadcast channel block; a sidelink channel state information reference signal (CSI-RS); a sidelink demodulation reference signal (DMRS); a sidelink phase tracking reference signal (PT-RS).

[0736] The present disclosure is applicable to sidelink communication of various channels and / or signals, and can perform sidelink communication based on the target beam by indicating the target beam used for sidelink communication, thereby improving the performance of the sidelink beam-based transmission.

[0737] In some embodiments, the target beams for different channel or signal transmissions are the same; or the target beams for different channel or signal transmissions are different, and each target beam corresponds to one or more channels / signals.

[0738] The present disclosure is applicable to different sidelink communication scenarios by determining that different channels / signals for sidelink communication can be the same or different target beams. In the respective scenarios, by determining the target beams used for sidelink communication, sidelink communication is performed based on the target beams, thereby improving the performance of sidelink beam-based transmission.

[0739] In some embodiments, the indication information includes a reference signal resource identifier; and the channel / signal used for sidelink communication transmission between the first device and the second device has a quasi-co-location relationship with a reference signal corresponding to the reference signal resource identifier.

[0740] The present disclosure indicates the target beams applicable to sidelink communication by the reference signal resource identifier. So that sidelink communication can be performed based on the target beams, thereby improving the performance of sidelink beam-based transmission.

[0741] In some embodiments, the indication information includes at least one of the following: first signaling for configuring a beam list; second signaling for activating one or more sets of beams in the beam list, each set of beams including at least one target beam; and third signaling for indicating a code point corresponding to a set of beams in the multiple sets of beams.

[0742] The present disclosure can indicate the target beams applicable to sidelink communication by one or more signaling. So that sidelink communication can be performed based on the target beams, thereby improving the performance of sidelink beam-based transmission.

[0743] In some embodiments, in response to the number of beams configured by the first signaling being greater than a threshold number, the indication information includes the second signaling.

[0744] The present disclosure can further activate the target beams applicable to sidelink communication by the second signaling in the case that the number of beams configured by the first signaling is large. So that sidelink communication can be performed based on the target beams, thereby improving the performance of sidelink beam-based transmission.

[0745] In some embodiments, in response to the second signaling activating a set of beams, the set of beams is used for sidelink communication.

[0746] The present disclosure can activate a set of target beams applicable to sidelink communication by the second signaling. So that sidelink communication can be performed based on the target beams, thereby improving the performance of sidelink beam-based transmission.

[0747] In some embodiments, in response to the second signaling activating multiple sets of beams, each set of beams in the multiple sets of beams corresponds to a code point.

[0748] The second signaling of the present disclosure activates multiple sets of target beams suitable for sidelink communication, which can have a corresponding relationship with the code points in the third signaling. In this way, the target beams suitable for sidelink communication can be determined through the code points, and sidelink communication is performed based on the target beams, thereby improving the performance of sidelink transmission based on beams.

[0749] In some embodiments, the set of beams activated by the second signaling includes at least one target beam, and multiple target beams in the at least one target beam correspond to multiple panels, and the multiple panels are multiple panels of the first device and / or the second device.

[0750] The multiple target beams included in the set of beams activated by the second signaling of the present disclosure can correspond to multiple panels, and sidelink communication can be performed based on the target beams suitable for sidelink communication using different panels. In this way, the performance of sidelink transmission based on beams is improved.

[0751] In some embodiments, the code points indicated by the third signaling are indicated by the beam indication field of the sidelink control information, and the code points have a corresponding relationship with the beam identifiers.

[0752] The code points indicated by the third signaling of the present disclosure can be indicated by the beam indication field of the SCI, so as to indicate the target beams suitable for sidelink communication, and perform sidelink communication based on the target beams, thereby improving the performance of sidelink transmission based on beams.

[0753] In some embodiments, the corresponding relationship is indicated by the first signaling or the second signaling, or the corresponding relationship is determined based on a default rule.

[0754] The present disclosure provides multiple ways to indicate the corresponding relationship between the code points and the beams, so as to indicate the target beams suitable for sidelink communication, and perform sidelink communication based on the target beams, thereby improving the performance of sidelink transmission based on beams.

[0755] In some embodiments, the sidelink control information includes at least one of the following: first-stage sidelink control information SCI 1-A; or second-stage SCI 2-A; or second-stage SCI 2-B; or second-stage SCI 2-C; or other sidelink control information different from the first-stage SCI 1-A, the second-stage SCI 2-A, the second-stage SCI 2-B, and the second-stage SCI 2-C.

[0756] The present disclosure includes a beam indication field in multiple different formats of SCI, so as to indicate the target beams suitable for sidelink communication, and perform sidelink communication based on the target beams, thereby improving the performance of sidelink transmission based on beams.

[0757] In some embodiments, the sidelink control information carrying the beam indication field further comprises a beam measurement request field.

[0758] The SCI of the present disclosure can further comprise a beam measurement request field to indicate the target beam. The sidelink communication can be based on the target beam, thereby improving the performance of sidelink beam-based transmission.

[0759] In some embodiments, the first signaling is carried in radio resource control signaling RRC sent by the second device through the PC5 interface; or the first signaling is carried in a sidelink medium access control control element MAC CE.

[0760] The present disclosure provides multiple carrying manners of the first signaling to indicate the target beam. The sidelink communication can be based on the target beam, thereby improving the performance of sidelink beam-based transmission.

[0761] In some embodiments, the second signaling is carried in a sidelink medium access control control element MAC CE.

[0762] The present disclosure provides a carrying manner of the second signaling to indicate the target beam. The sidelink communication can be based on the target beam, thereby improving the performance of sidelink beam-based transmission.

[0763] In some embodiments, the third signaling is carried in sidelink control information.

[0764] The present disclosure provides a carrying manner of the third signaling to indicate the target beam. The sidelink communication can be based on the target beam, thereby improving the performance of sidelink beam-based transmission.

[0765] In some embodiments, the apparatus 300 further comprises a processing module 302 configured to determine the target beam based on the beam report indicated by the first device.

[0766] The present disclosure can also indicate the target beam based on the beam report indicated by the first device. The sidelink communication can be based on the target beam, thereby improving the performance of sidelink beam-based transmission.

[0767] In some embodiments, the beam report comprises at least one of the following: N beam identifications, and beam qualities corresponding to the N beam identifications, N being a positive integer.

[0768] The present disclosure can also indicate the target beam based on multiple parameters included in the explicit beam report. The sidelink communication can be based on the target beam, thereby improving the performance of sidelink beam-based transmission.

[0769] In some embodiments, the beam identifier is a reference signal resource identifier corresponding to the beam; the reference signal resource identifier comprises at least one of: a sidelink channel state information reference signal (CSI-RS) resource identifier; a sidelink synchronization signal and physical broadcast channel (S-SS / PSBCH) block identifier; a time slot identifier corresponding to the reference signal resource; a mini-slot identifier corresponding to the reference signal resource.

[0770] The present disclosure provides various forms of reference signal resource identifiers to indicate the target beam. The sidelink communication is performed based on the target beam, thereby improving the performance of sidelink beam-based transmission.

[0771] In some embodiments, in response to the value of N being 1, the target beam is the beam corresponding to one of the beam identifiers in the beam report.

[0772] The present disclosure indicates the target beam through the parameters included in the beam report. The sidelink communication is performed based on the target beam, thereby improving the performance of sidelink beam-based transmission.

[0773] In some embodiments, in response to the value of N being a positive integer greater than 1, the target beam is the beam with the best beam quality among the N beams corresponding to the N beam identifiers in the beam report, or the target beam is the beam corresponding to the beam identifier with the lowest bit position in the beam report.

[0774] The present disclosure indicates the target beam through various parameters included in the beam report. The sidelink communication is performed based on the target beam, thereby improving the performance of sidelink beam-based transmission.

[0775] In some embodiments, the beam report implicitly indicates the target beam based on the PSFCH carrying the physical hybrid automatic repeat request (HARQ) feedback of the PSSCH, and the target beam is the beam corresponding to the reference signal on the specified reference signal resource; wherein the specified reference signal resource has a corresponding relationship with the specified PSSCH, and the specified PSSCH is the PSSCH corresponding to the PSFCH carrying the HARQ feedback.

[0776] The present disclosure implicitly indicates the target beam through the beam report, so as to perform the sidelink communication based on the target beam, thereby improving the performance of sidelink beam-based transmission.

[0777] In some embodiments, the transmission module 301 is further configured to perform sidelink communication with the first device based on the target beam within a first time period after the first device indicates the beam report.

[0778] The present disclosure also provides a first time period, so as to perform sidelink communication based on the target beam within the first time period, thereby improving the performance of sidelink beam-based transmission.

[0779] In some embodiments, the first time period is after the beam switching of the first device, and within a time period in which the target beam is valid, wherein the target beam valid means that the first device is allowed to perform sidelink communication with the second device based on the target beam.

[0780] The present disclosure can perform sidelink communication based on the target beam after the beam switching of the second device, and within a time period in which the target beam is valid, thereby improving the performance of sidelink beam-based transmission.

[0781] Figure 13 is another schematic diagram of a sidelink communication device according to an example embodiment. Referring to Figure 13 The device 400 is configured in a network device, and the device 400 includes a transmission module 401 configured to send indication information to a first device, the indication information being used to indicate a target beam for sidelink communication, the target beam being used for sidelink communication between the first device and a second device.

[0782] The present disclosure can perform sidelink communication based on the target beam by indicating the target beam used for sidelink communication, thereby improving the performance of sidelink beam-based transmission.

[0783] In some embodiments, the target beam is used for channel transmission and / or signal transmission of the sidelink; the channel includes at least one of the following: a physical sidelink shared channel (PSSCH); a physical sidelink control channel (PSCCH); a physical sidelink feedback channel (PSFCH); a physical sidelink broadcast channel (PSBCH); the signal includes at least one of the following: a sidelink synchronization signal and a physical sidelink broadcast channel block; a sidelink channel state information reference signal (CSI-RS); a sidelink demodulation reference signal (DMRS); a sidelink phase tracking reference signal (PT-RS).

[0784] The present disclosure is applicable to sidelink communication of various channels and / or signals, and can improve the performance of sidelink beam-based transmission by indicating the target beam used for sidelink communication based on the target beam.

[0785] In some embodiments, the target beams for different channel or signal transmission are the same; or the target beams for different channel or signal transmission are different, and each target beam corresponds to one or more channels / signals.

[0786] The present disclosure is applicable to different sidelink communication scenarios by determining that different channels / signals for sidelink communication can be the same or different target beams. In the corresponding scenarios, the performance of sidelink beam-based transmission is improved by determining the target beam used for sidelink communication based on the target beam.

[0787] In some embodiments, the indication information comprises a reference signal resource identifier; a channel / signal used for sidelink communication transmission between the first device and the second device has a quasi-co-location relationship with a reference signal corresponding to the reference signal resource identifier.

[0788] The present disclosure indicates the target beam applicable to sidelink communication by a reference signal resource identifier. So that the sidelink communication can be performed based on the target beam, thereby improving the performance of sidelink beam-based transmission.

[0789] In some embodiments, the indication information comprises at least one of the following: first signaling for configuring a beam list; second signaling for activating one or more sets of beams in the beam list, each set of beams comprising at least one target beam; and third signaling for indicating a code point corresponding to a set of beams in the multiple sets of beams.

[0790] The present disclosure can indicate the target beam applicable to sidelink communication through one or more signalings. So that the sidelink communication can be performed based on the target beam, thereby improving the performance of sidelink beam-based transmission.

[0791] In some embodiments, in response to the number of beams configured by the first signaling being greater than a threshold, the indication information comprises the second signaling.

[0792] The present disclosure can activate the target beam applicable to sidelink communication through the second signaling in the case that the number of beams configured by the first signaling is large. So that the sidelink communication can be performed based on the target beam, thereby improving the performance of sidelink beam-based transmission.

[0793] In some embodiments, in response to the activation of a set of beams by the second signaling, the set of beams is used for sidelink communication.

[0794] The present disclosure can activate a set of target beams applicable to sidelink communication through the second signaling. So that the sidelink communication can be performed based on the target beam, thereby improving the performance of sidelink beam-based transmission.

[0795] In some embodiments, in response to the activation of multiple sets of beams by the second signaling, each set of beams in the multiple sets of beams corresponds to a code point.

[0796] The present disclosure can activate multiple sets of target beams applicable to sidelink communication through the second signaling, which can have a corresponding relationship with the code points in the third signaling. So that the target beam applicable to sidelink communication can be determined through the code point, and the sidelink communication can be performed based on the target beam, thereby improving the performance of sidelink beam-based transmission.

[0797] In some embodiments, the set of beams activated by the second signaling includes at least one target beam, and a plurality of target beams in the at least one target beam correspond to a plurality of panels, and the plurality of panels are a plurality of panels of the first device and / or the second device.

[0798] The plurality of target beams included in the set of beams activated by the second signaling of the present disclosure can correspond to a plurality of panels, and the sidelink communication can be performed based on the target beam suitable for the sidelink communication by using different panels. Thus, the performance of the sidelink beam-based transmission is improved.

[0799] In some embodiments, the correspondence between the codepoint and the beam identifier indicated by the third signaling is indicated by the first signaling or the second signaling, or the correspondence is determined based on a default rule.

[0800] The correspondence between the codepoint and the beam identifier indicated by the third signaling of the present disclosure is used to indicate the target beam suitable for the sidelink communication, and the sidelink communication is performed based on the target beam, so as to improve the performance of the sidelink beam-based transmission.

[0801] In some embodiments, the correspondence is indicated by the first signaling or the second signaling, or the correspondence is determined based on a default rule.

[0802] The present disclosure provides a plurality of ways to indicate the correspondence between the codepoint and the beam, so as to indicate the target beam suitable for the sidelink communication, and the sidelink communication is performed based on the target beam, so as to improve the performance of the sidelink beam-based transmission.

[0803] In some embodiments, the first signaling is carried in the radio resource control signaling (RRC) sent by the network device.

[0804] The present disclosure provides a carrying manner of the first signaling to indicate the target beam. The sidelink communication is performed based on the target beam, so as to improve the performance of the sidelink beam-based transmission.

[0805] It should be noted that the various modules / units involved in the apparatus 400 involved in the embodiments of the present disclosure are only exemplary and are not limiting. For example, the apparatus 400 in the embodiments of the present disclosure can also include a processing module, etc. The transmission module 401 can be used to receive information and send information. The modules included in the apparatus 400 can interact with each other, and can also interact with other network element devices.

[0806] Regarding the apparatus in the above embodiments, the specific manner in which each module performs operations has been described in detail in the embodiments of the method, and will not be described in detail here.

[0807] Figure 14is a schematic diagram of a sidelink communication device according to an example embodiment. For example, device 500 can be a mobile phone, a computer, a digital broadcast terminal, a messaging equipment, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, or the like.

[0808] It is understood that the device 500 can be the first terminal and / or the second terminal mentioned above.

[0809] Referring to Figure 14 , the device 500 can include one or more of the following components: a processing component 502, a memory 504, a power supply component 506, a multimedia component 508, an audio component 510, an input / output (I / O) interface 512, a sensor component 514, and a communication component 516.

[0810] The processing component 502 usually controls overall operations of the device 500, such as operations associated with displaying, making phone calls, data communications, camera operations and recording operations. The processing component 502 can include one or more processors 520 to execute instructions to complete all or part of steps of the methods described above. In addition, the processing component 502 can include one or more modules to facilitate interaction between the processing component 502 and other components. For example, the processing component 502 can include a multimedia module to facilitate the interaction between the multimedia component 508 and the processing component 502.

[0811] The memory 504 is configured to store various types of data to support operations of the device 500. Examples of these data include instructions for any application or method operating on the device 500, contact data, phonebook data, messages, pictures, videos, and the like. The memory 504 can be implemented by any type of volatile or non-volatile storage devices or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic storage, flash memory, magnetic disk or optical disk.

[0812] The power supply component 506 provides power for various components of the device 500. The power supply component 506 can include a power supply management system, one or more power sources, and other components associated with generating, managing and distributing power for the device 500.

[0813] The multimedia component 508 includes a screen providing an output interface between the device 500 and a user. In some embodiments, the screen can include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen can be implemented as a touch screen to receive input signals from a user. The touch panel includes one or more touch sensors to sense touch, swiping, and gestures on the touch panel. The touch sensors can not only sense a boundary of a touching or swiping action, but also detect duration and pressure related to the touching or swiping action. In some embodiments, the multimedia component 508 includes a front camera and / or a rear camera. When the device 500 is in an operation mode, such as a shooting mode or a video mode, the front camera and / or the rear camera can receive external multimedia data. Each of the front and rear camera can be a fixed optical lens system or have a focal length and optical zooming capability.

[0814] The audio component 510 is configured to output and / or input audio signals. For example, the audio component 510 includes a microphone (MIC) to receive an external audio signal when the device 500 is in an operation mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signal can be further stored in the memory 504 or transmitted via the communication component 516. In some embodiments, the audio component 510 further includes a speaker for outputting audio signals.

[0815] The I / O interface 512 provides an interface between the processing component 502 and peripheral interface modules, such as a keypad, a click wheel, buttons, and so on. The buttons can include, but are not limited to, a home button, a volume button, a start button, and a lock button.

[0816] The sensor component 514 includes one or more sensors to provide various state assessments for the device 500. For example, the sensor component 514 can detect an open / closed position of the device 500, relative positioning of components, such as a display and a keypad of the device 500, a change in position of the device 500 or a component of the device 500, presence or absence of user contact with the device 500, a change in orientation of the device 500 or acceleration / deceleration of the device 500, and a temperature change of the device 500. The sensor component 514 can include a proximity sensor configured to detect presence of a nearby object without any physical touch. The sensor component 514 can further include a light sensor, such as a CMOS or CCD image sensor, for use in an imaging application. In some embodiments, the sensor component 514 can further include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

[0817] Communication component 516 is configured to facilitate wired or wireless communication between device 500 and other devices. Device 500 can access wireless networks based on communication standards, such as WiFi, 2G, or 3G, or combinations thereof. In one exemplary embodiment, communication component 516 receives broadcast signals or broadcast-related information from an external broadcast management system via a broadcast channel. In one exemplary embodiment, communication component 516 also includes a near-field communication (NFC) module to facilitate short-range communication. For example, the NFC module may be implemented based on radio frequency identification (RFID) technology, Infrared Data Association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.

[0818] In an exemplary embodiment, the apparatus 500 may be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field-programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components to perform the methods described above.

[0819] In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions is also provided, such as a memory 504 including instructions, which can be executed by a processor 520 of the device 500 to perform the above-described method. For example, the non-transitory computer-readable storage medium may be a ROM, random access memory (RAM), CD-ROM, magnetic tape, floppy disk, and optical data storage device, etc.

[0820] Figure 15 This is a schematic diagram of another sidelink communication device according to an exemplary embodiment. For example, device 600 may be provided as a server. For example, device 600 may be the network device mentioned above. (Refer to...) Figure 15 The apparatus 600 includes a processing component 622, which further includes one or more processors, and memory resources represented by memory 632 for storing instructions, such as application programs, that can be executed by the processing component 622. The application programs stored in memory 632 may include one or more modules, each corresponding to a set of instructions. Furthermore, the processing component 622 is configured to execute instructions to perform the methods described above.

[0821] The apparatus 600 can also include a power supply component 626 configured to perform power management for the apparatus 600, a wired or wireless network interface 650 configured to connect the apparatus 600 to a network, and an input output (I / O) interface 658. The apparatus 600 can operate based on an operating system stored in the memory 632, such as Windows Server™, Mac OS X™, Unix™, Linux™, FreeBSD™, or the like.

[0822] The present disclosure improves the performance of sidelink beam-based transmission by instructing a target beam used for sidelink communication and performing sidelink communication based on the target beam.

[0823] It should also be appreciated that "multiple" in the present disclosure refers to two or more, and other quantifiers are similar. "And / or" describes the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B can represent: A exists alone, A and B exist together, and B exists alone. The character " / " generally represents that the associated objects before and after it are in an "or" relationship. The singular form "a", "said" and "the" are also intended to include the plural form, unless the context clearly indicates otherwise.

[0824] It should also be appreciated that the meanings of the words "in response to", "if" and the like in the present disclosure depend on the context and the actual use scenario, such as the word "in response to" used herein can be interpreted as "when" or "when" or "if" or "if".

[0825] It should also be appreciated that the terms "first", "second", and the like are used to describe various information, but these information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other, and do not represent a specific order or importance. In fact, the expressions "first", "second", and the like can be used interchangeably. For example, the first information can also be referred to as the second information, and similarly, the second information can also be referred to as the first information without departing from the scope of the present disclosure.

[0826] It should also be appreciated that although the operations are described in a specific order in the accompanying drawings in the embodiments of the present disclosure, it should not be understood as requiring the operations to be performed in the specific order shown or in a serial order, or requiring all the operations to be performed to obtain the desired results. In a specific environment, multi-tasking and parallel processing can be advantageous.

[0827] Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the features disclosed herein. It is intended that the specification and examples be considered as exemplary only, with a true scope of the disclosure being indicated by the following claims.

[0828] It is to be understood that the disclosure is not limited to the precise construction herein described and as shown in the attached drawings, and that various modifications and changes can be made by those skilled in the art without departing from the scope thereof. The scope of the disclosure is limited only by the claims appended hereto.

Claims

1. A method of sidelink communication, the method comprising: The method is performed by a first device, and the method comprises: receiving indication information sent by a second device and / or a network device, the indication information being used to indicate a target beam; determining a target beam for sidelink communication based on the indication information; performing channel transmission and / or signal transmission with the second device in sidelink based on the target beam; wherein the target beam comprises at least one of the following: sidelink spatial relationship information, sidelink spatial setting, sidelink spatial reception parameter, sidelink transmission spatial filter, sidelink spatial domain reception filter, sidelink spatial domain transmission filter, sidelink transmission configuration indication state, sidelink quasi co-location type D; the indication information comprises reference signal resource identification; a channel / signal used for sidelink communication transmission between the first device and the second device has a quasi co-location relationship with a reference signal corresponding to the reference signal resource identification; the indication information further comprises at least one of the following: first signaling used to configure a beam list; second signaling used to activate one or more sets of beams in the beam list, each set of beams comprising at least one target beam; third signaling used to indicate a code point corresponding to a set of beams in the multiple sets of beams; the code point indicated by the third signaling is indicated by a beam indication field of sidelink control information, and the code point has a corresponding relationship with a beam identification; the corresponding relationship is indicated by the first signaling or the second signaling, or the corresponding relationship is determined based on a default rule; the sidelink control information comprises at least one of the following: first stage sidelink control information SCI 1-A; second stage SCI 2-A; second stage SCI 2-B; second stage SCI 2-C; other sidelink control information different from the first stage SCI 1-A, the second stage SCI 2-A, the second stage SCI 2-B, and the second stage SCI 2-C.

2. The method of claim 1, wherein, The channel comprises at least one of the following: physical sidelink shared channel PSSCH; physical sidelink control channel PSCCH; physical sidelink feedback channel PSFCH; physical sidelink broadcast channel PSBCH; The signal comprises at least one of the following: sidelink synchronization signal and physical sidelink broadcast channel block; sidelink channel state information reference signal CSI-RS; sidelink demodulation reference signal DMRS; sidelink phase tracking reference signal PT-RS.

3. The method according to claim 1 or 2, characterized in that, The target beams for different channels or signal transmissions are the same; or The target beams for different channels or signal transmissions are different, and each target beam corresponds to one or more channels / signals.

4. The method of claim 1, wherein, In response to the number of beams configured by the first signaling being greater than a threshold number, the indication information comprises the second signaling.

5. The method of claim 1, wherein, In response to a set of beams being activated by the second signaling, the set of beams are used for sidelink communication.

6. The method of claim 1, wherein, In response to multiple sets of beams being activated by the second signaling, each set of beams in the multiple sets of beams corresponds to a code point.

7. The method of claim 1, wherein, The second signaling activates a set of beams, including at least one target beam, and a plurality of target beams in the at least one target beam correspond to a plurality of panels, and the plurality of panels are a plurality of panels of the first device and / or the second device.

8. The method of claim 1, wherein, The sidelink control information carrying the beam indication field further includes a beam measurement request field.

9. The method of claim 1, wherein, the first signaling is carried in radio resource control (RRC) signaling transmitted by the network device; or the first signaling is carried in radio resource control (RRC) signaling transmitted by the second device through a PC5 interface; or the first signaling is carried in a sidelink medium access control (MAC) control element (CE).

10. The method of claim 1, wherein, the second signaling is carried in a sidelink medium access control (MAC) control element (CE).

11. The method of claim 1, wherein, the third signaling is carried in sidelink control information.

12. The method of claim 1, wherein, The method further includes: determining the target beam based on a beam report indicated by the first device.

13. The method of claim 12, wherein, The beam report includes at least one of the following: N beam identifiers, and beam qualities corresponding to the N beam identifiers, where N is a positive integer.

14. The method of claim 13, wherein, The beam identifier is a reference signal resource identifier corresponding to the beam; The reference signal resource identifier includes at least one of the following: a sidelink channel state information reference signal (CSI-RS) resource identifier; a sidelink synchronization signal and physical broadcast channel (S-SS / PSBCH) block identifier; a time slot identifier corresponding to the reference signal resource; a mini-slot identifier corresponding to the reference signal resource.

15. The method according to claim 13 or 14, characterized in that, In response to the value of N being 1, the target beam is a beam corresponding to one of the beam identifiers in the beam report.

16. The method according to claim 13 or 14, characterized in that, In response to the value of N being a positive integer greater than 1, the target beam is a beam with the maximum beam quality among N beams corresponding to the N beam identifiers in the beam report, or the target beam is a beam corresponding to a beam identifier with the lowest bit position in the beam report.

17. The method of claim 12, wherein, The beam report is implicitly indicated based on a physical sidelink shared channel (PSSCH) carrying physical hybrid automatic repeat request (HARQ) feedback, and the target beam is a beam corresponding to a reference signal on a specified reference signal resource; wherein the specified reference signal resource has a corresponding relationship with a specified PSSCH, and the specified PSSCH is a PSSCH corresponding to a physical sidelink feedback channel (PSFCH) carrying HARQ feedback.

18. The method of claim 1, wherein, The sidelink communication based on the target beam with the second device includes: within a first time period after the first device indicates the beam report, performing sidelink communication with the second device based on the target beam.

19. The method of claim 18, wherein, The first time period is after the first device performs beam switching and within a time period during which the target beam is valid, where the target beam being valid means that the first device is allowed to perform sidelink communication with the second device based on the target beam.

20. A method of sidelink communication, comprising: The method is performed by the second device, and the method includes: sending indication information to the first device, the indication information being used to indicate a target beam for sidelink communication; performing sidelink channel transmission and / or signal transmission with the first device based on the target beam. The target beam includes at least one of the following: sidelink spatial relationship information, sidelink spatial setting, sidelink spatial receiving parameter, sidelink transmission spatial filter, sidelink spatial domain receiving filter, sidelink spatial domain transmission filter, sidelink transmission configuration indication state, and sidelink quasi co-location type D; The indication information includes a reference signal resource identifier; A channel / signal used for sidelink communication transmission between the first device and the second device has a quasi co-location relationship with a reference signal corresponding to the reference signal resource identifier; The indication information further includes at least one of the following: First signaling for configuring a beam list; Second signaling for activating one or more sets of beams in the beam list, each set of beams including at least one target beam; Third signaling for indicating a code point corresponding to a set of beams in the multiple sets of beams; The code point indicated by the third signaling is indicated by a beam indication field of sidelink control information, and the code point has a corresponding relationship with a beam identifier; The corresponding relationship is indicated by the first signaling or the second signaling, or the corresponding relationship is determined based on a default rule; The sidelink control information includes at least one of the following: First stage sidelink control information SCI 1-A; Second stage SCI 2-A; Second stage SCI 2-B; Second stage SCI 2-C; Other sidelink control information different from the first stage SCI 1-A, the second stage SCI 2-A, the second stage SCI 2-B, and the second stage SCI 2-C.

21. The method of claim 20, wherein The channel includes at least one of the following: Physical sidelink shared channel (PSSCH); Physical sidelink control channel (PSCCH); Physical sidelink feedback channel (PSFCH); Physical sidelink broadcast channel (PSBCH); The signal includes at least one of the following: Sidelink synchronization signal and physical sidelink broadcast channel block; Sidelink channel state information reference signal (CSI-RS); Sidelink demodulation reference signal (DMRS); Sidelink phase tracking reference signal (PT-RS).

22. The method of claim 20 or 21, wherein, The target beams for different channels or signal transmissions are the same; or The target beams for different channels or signal transmissions are different, and each target beam corresponds to one or more channels / signals.

23. The method of claim 20, wherein, In response to the number of beams configured by the first signaling being greater than a threshold number, the indication information includes the second signaling.

24. The method of claim 20, wherein, In response to activating a set of beams by the second signaling, the set of beams is used for sidelink communication.

25. The method of claim 20, wherein, In response to activating multiple sets of beams by the second signaling, each set of beams in the multiple sets of beams corresponds to a code point.

26. The method of claim 20, wherein, The set of beams activated by the second signaling includes at least one target beam, and multiple target beams in the at least one target beam correspond to multiple panels, and the multiple panels are multiple panels of the first device and / or the second device.

27. The method of claim 20, wherein, The sidelink control information carrying the beam indication field further includes a beam measurement request field.

28. The method of claim 20, wherein The first signaling is carried in radio resource control signaling (RRC) sent by the second device through a PC5 interface. The first signaling is carried in a sidelink medium access control control element (MAC CE).

29. The method of claim 20, wherein, The second signaling is carried in a sidelink medium access control control element (MAC CE).

30. The method of claim 20, wherein, The third signaling is carried in sidelink control information.

31. The method of claim 20, wherein, The method further includes: Determining the target beam based on a beam report indicated by the first device.

32. The method of claim 31, wherein, The beam report includes at least one of the following: N beam identifiers, and beam qualities corresponding to the N beam identifiers, where N is a positive integer.

33. The method of claim 32, wherein, The beam identifier is a reference signal resource identifier corresponding to the beam. The reference signal resource identifier includes at least one of the following: A sidelink channel state information reference signal (CSI-RS) resource identifier; A sidelink synchronization signal and physical broadcast channel (S-SS / PSBCH) block identifier; A time slot identifier corresponding to the reference signal resource; A mini-slot identifier corresponding to the reference signal resource.

34. The method of claim 32 or 33, wherein, In response to the value of N being 1, the target beam is a beam corresponding to one of the beam identifiers in the beam report.

35. The method of claim 32 or 33, wherein, In response to the value of N being a positive integer greater than 1, the target beam is a beam with the maximum beam quality among beams corresponding to the N beam identifiers in the beam report, or the target beam is a beam corresponding to a beam identifier with the lowest bit position in the beam report.

36. The method of claim 31, wherein, The beam report is implicitly indicated based on a physical sidelink shared channel (PSSCH) carrying physical hybrid automatic repeat request (HARQ) feedback, and the target beam is a beam corresponding to a reference signal on a specified reference signal resource; The specified reference signal resource has a corresponding relationship with a specified PSSCH, and the specified PSSCH is a PSSCH corresponding to a physical sidelink feedback channel (PSFCH) carrying HARQ feedback.

37. The method of claim 20, wherein, The sidelink communication based on the target beam with the first device includes: Within a first time period after the first device indicates the beam report, performing sidelink communication with the first device based on the target beam.

38. The method of claim 37, wherein, The first time period is within a time period during which the target beam is valid after the second device performs beam switching, where the target beam being valid means that the second device is allowed to perform sidelink communication with the first device based on the target beam.

39. A method of sidelink communication, comprising: The method is performed by a network device, and the method includes: Sending indication information to a first device, the indication information being used to indicate a target beam for sidelink communication, the target beam being used for channel transmission and / or signal transmission of the first device with a second device in a sidelink; The target beam includes at least one of the following: sidelink spatial relationship information, sidelink spatial setting, sidelink spatial reception parameter, sidelink transmission spatial filter, sidelink spatial domain reception filter, sidelink spatial domain transmission filter, sidelink transmission configuration indication state, and sidelink quasi co-location type D. The indication information includes a reference signal resource identifier. A channel / signal used for sidelink communication transmission between the first device and the second device has a quasi-co-location relationship with a reference signal corresponding to the reference signal resource identifier; The indication information further includes at least one of: First signaling for configuring a beam list; Second signaling for activating one or more sets of beams in the beam list, each set of beams including at least one target beam; Third signaling for indicating a code point corresponding to a set of beams in the multiple sets of beams; The code point indicated by the third signaling is indicated by a beam indication field of sidelink control information, and the code point has a corresponding relationship with a beam identifier; The corresponding relationship is indicated by the first signaling or the second signaling, or the corresponding relationship is determined based on a default rule; The sidelink control information includes at least one of: First stage sidelink control information SCI 1-A; Second stage SCI 2-A; Second stage SCI 2-B; Second stage SCI 2-C; Other sidelink control information different from the first stage SCI 1-A, the second stage SCI 2-A, the second stage SCI 2-B, and the second stage SCI 2-C.

40. The method of claim 39, wherein The channel includes at least one of: Physical sidelink shared channel (PSSCH); Physical sidelink control channel (PSCCH); Physical sidelink feedback channel (PSFCH); Physical sidelink broadcast channel (PSBCH); The signal includes at least one of: Sidelink synchronization signal and physical sidelink broadcast channel block; Sidelink channel state information reference signal (CSI-RS); Sidelink demodulation reference signal (DMRS); Sidelink phase tracking reference signal (PT-RS).

41. The method of claim 39 or 40, wherein, The target beams for different channels or signal transmissions are the same; or The target beams for different channels or signal transmissions are different, and each target beam corresponds to one or more channels / signals.

42. The method of claim 39, wherein, In response to the number of beams configured by the first signaling being greater than a threshold number, the indication information includes the second signaling.

43. The method of claim 39, wherein, In response to activating a set of beams by the second signaling, the set of beams is used for sidelink communication.

44. The method of claim 39, wherein, In response to activating multiple sets of beams by the second signaling, each set of beams in the multiple sets of beams corresponds to a code point.

45. The method of claim 39, wherein, The set of beams activated by the second signaling includes at least one target beam, and multiple target beams in the at least one target beam correspond to multiple panels, and the multiple panels are multiple panels of the first device and / or the second device.

46. The method of claim 39, wherein, The first signaling is carried in radio resource control (RRC) signaling sent by a network device.

47. A side-link communication device, characterized in that, The apparatus is configured in a first device, and the apparatus includes: A transmission module configured to receive indication information sent by a second device and / or a network device, the indication information being used to indicate a target beam and perform channel transmission and / or signal transmission with the second device based on the target beam; A processing module configured to determine a target beam for sidelink communication based on the indication information; The target beam includes at least one of the following: sidelink spatial relation information, sidelink spatial setting, sidelink spatial receiving parameter, sidelink transmission spatial filter, sidelink spatial domain receiving filter, sidelink spatial domain transmission filter, sidelink transmission configuration indication state, and sidelink quasi co-location type D. The indication information includes a reference signal resource identifier. A channel / signal used for sidelink communication transmission between the first device and the second device has a quasi co-location relationship with a reference signal corresponding to the reference signal resource identifier. The indication information further includes at least one of the following: First signaling for configuring a beam list; Second signaling for activating one or more sets of beams in the beam list, each set of beams including at least one target beam; Third signaling for indicating a code point corresponding to a set of beams in the multiple sets of beams; The code point indicated by the third signaling is indicated by a beam indication field of sidelink control information, and the code point has a corresponding relationship with a beam identifier; The corresponding relationship is indicated by the first signaling or the second signaling, or the corresponding relationship is determined based on a default rule; The sidelink control information includes at least one of the following: First stage sidelink control information SCI 1-A; Second stage SCI 2-A; Second stage SCI 2-B; Second stage SCI 2-C; Other sidelink control information different from the first stage SCI 1-A, the second stage SCI 2-A, the second stage SCI 2-B, and the second stage SCI 2-C.

48. A side-link communication device, characterized in that, The apparatus is configured in the second device, and the apparatus includes: A transmission module configured to send indication information to a first device, the indication information being used to indicate a target beam for sidelink communication; The transmission module is further configured to perform sidelink channel transmission and / or signal transmission based on the target beam and the first device; The target beam includes at least one of the following: sidelink spatial relation information, sidelink spatial setting, sidelink spatial receiving parameter, sidelink transmission spatial filter, sidelink spatial domain receiving filter, sidelink spatial domain transmission filter, sidelink transmission configuration indication state, and sidelink quasi co-location type D. The indication information includes a reference signal resource identifier. A channel / signal used for sidelink communication transmission between the first device and the second device has a quasi co-location relationship with a reference signal corresponding to the reference signal resource identifier. The indication information further includes at least one of the following: First signaling for configuring a beam list; Second signaling for activating one or more sets of beams in the beam list, each set of beams including at least one target beam; Third signaling for indicating a code point corresponding to a set of beams in the multiple sets of beams; The code point indicated by the third signaling is indicated by a beam indication field of sidelink control information, and the code point has a corresponding relationship with a beam identifier; The corresponding relationship is indicated by the first signaling or the second signaling, or the corresponding relationship is determined based on a default rule; The sidelink control information includes at least one of the following: Phase 1 Sidelink Control Information (SCI 1-A); Second-stage SCI 2-A; Phase 2 SCI 2-B; Second-stage SCI 2-C; This is different from other sidelink control information in the first stage SCI 1-A, the second stage SCI 2-A, the second stage SCI 2-B, and the second stage SCI 2-C.

49. An apparatus for sidelink communications, the apparatus comprising: The device is configured in a network device, and the device includes: A transmission module is used to send indication information to a first device, the indication information being used to indicate a target beam for sidelink communication, the target beam being used for channel transmission and / or signal transmission between the first device and the second device in a sidelink. The target beam includes at least one of the following: side link spatial relationship information, side link spatial settings, side link spatial receiving parameters, side link transmission spatial filter, side link spatial domain receiving filter, side link spatial domain transmission filter, side link transmission configuration indication status, and side link quasi-co-address type D. The indication information includes a reference signal resource identifier; The channel / signal used for sidelink communication between the first device and the second device has a quasi-co-address relationship with the reference signal corresponding to the reference signal resource identifier; The instruction information also includes at least one of the following: The first signaling is used to configure the beam list; The second signaling is used to activate one or more sets of beams in the beam list, each set of beams including at least one target beam; The third signaling is used to indicate the code point corresponding to one of the multiple sets of beams; The code point indicated by the third signaling is indicated by the beam indication field of the side link control information, and there is a correspondence between the code point and the beam identifier; The correspondence is indicated by the first signaling or the second signaling, or the correspondence is determined based on a default rule; The sidelink control information includes at least one of the following: Phase 1 Sidelink Control Information (SCI 1-A); Second-stage SCI 2-A; Phase 2 SCI 2-B; Second-stage SCI 2-C; This is different from other sidelink control information in the first stage SCI 1-A, the second stage SCI 2-A, the second stage SCI 2-B, and the second stage SCI 2-C.

50. An apparatus for sidelink communications, the apparatus comprising: include: processor; Memory used to store processor-executable instructions; The processor is configured to perform the method according to any one of claims 1 to 19; Alternatively, the method described in any one of claims 20 to 38 may be performed; or the method described in any one of claims 39 to 46 may be performed.

51. A non-transitory computer-readable storage medium, comprising: When the instructions in the storage medium are executed by the processor of the first device, the first device is able to perform the method according to any one of claims 1 to 19; or, When the instructions in the storage medium are executed by the processor of the second device, the second device is enabled to perform the method according to any one of claims 20 to 38; or, When the instructions in the storage medium are executed by the processor of the network device, the network device is enabled to perform the method of any one of claims 39 to 46.

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