Method executed by user equipment, and user equipment

Abstract

The present application provides a method executed by a user equipment, and a user equipment. The method executed by a user equipment comprises: in one resource pool, performing a transmission resource selection or reselection check on one sidelink process, wherein the sidelink process is associated with one selected sidelink grant used for transmitting one or more media access control (MAC) protocol data units (PDUs); when the transmission resource selection or reselection check triggers transmission resource selection or reselection, selecting time and frequency resources used for one or more transmission opportunities, wherein when a physical sidelink feedback channel (PSFCH) is configured for the resource pool, it is ensured that a minimum time interval is satisfied between any two selected resources, wherein for a sidelink operation with shared spectrum channel access, the minimum time interval comprises a time interval between the end of the last symbol of PSSCH transmission in the first resource and the start of the first symbol of the corresponding last PSFCH reception occasion, and the PSFCH reception occasion is determined on the basis of higher-layer configuration of the resource pool.

Description

Method performed by user equipment and user equipment Technical Field

[0001] The present disclosure relates to a method performed by a user equipment and the user equipment. Background Art

[0002] In a wireless communication system, information can be exchanged between different communication nodes. Wireless communication can be carried out on licensed spectrum and / or unlicensed spectrum. Examples of wireless communication systems may include systems (system(s)) standardized by 3GPP (3rd Generation Partnership Project), such as a 4G system or its evolved system based on LTE (Long-Term Evolution) wireless access technology, and a 5G system or its evolved system based on NR (New Radio) wireless access technology. In a communication system based on 3GPP specifications, examples of communication nodes may include UE (User Equipment) and base stations (such as eNB, also such as gNB). The radio link (radio link) from the base station to the UE can be called a downlink (DL, downlink), the radio link from the UE to the base station can be called an uplink (UL, uplink), and the radio link between UEs can be called a sidelink (SL, sidelink). The interface for wireless transmission and / or reception between a base station and a UE may be referred to as a Uu interface (e.g., an NR-Uu interface based on NR; or an LTE-Uu interface based on LTE). The interface for wireless transmission and / or reception between UEs may be referred to as a PC5 interface (e.g., an NR-PC5 interface based on NR; or an LTE-PC5 interface based on LTE). The UE may perform transmission or reception in one or more BWPs (Bandwidth Parts) in each of one or more carriers, where each carrier may be an uplink carrier, a downlink carrier, or a sidecar carrier.

[0003] Wireless communication systems, such as 4G and 5G, may support one or more positioning and / or ranging technologies. When positioning and / or ranging a UE, information such as the UE's position (e.g., absolute position; or relative position) and / or direction may be calculated and / or estimated based, at least in part, on measurements of some or all of the downlink, uplink, and sidelink signals.

[0004] To support various services in wireless communication systems, such as communication, positioning, and ranging, in part or in whole, a series of issues need to be addressed, such as operation on licensed and unlicensed spectrum; operation on paired and unpaired spectrum; shared spectrum channel access; initial access; multiple access; random access; channel coding; generation, transmission, and reception of physical layer channels and signals (e.g., determination of transmission bandwidth, transmission waveform, modulation scheme, subcarrier spacing, and cyclic prefix); transmission and reception based on unicast, groupcast, multicast, and broadcast; physical layer control information and signaling processes (e.g., synchronization processes, scheduling mechanisms, and feedback mechanisms); frame structure; timing adjustment; and timing relationships. relationship); for example, transmit power control; for example, signal measurement; for example, higher-layer control information and signaling procedures; for example, resource allocation and management; for example, multi-carrier operation, including, for example, carrier aggregation and dual connectivity; for example, multi-antenna transmission and reception; for example, beam-based operation; for example, priority-based operation; for example, multi-point coordination; for example, relaying operation; for example, mobility management; for example, in-device coexistence; for example, inter-system interoperability and coexistence.

[0005] Prior art literature

[0006] Non-patent literature

[0007] Non-Patent Document 1: RP-170379, Revision of SI: Study on New Radio Access Technology, 3GPP TSG RAN Meeting #75

[0008] Non-Patent Document 2: RP-191971, Revised WID: New Radio Access Technology, 3GPP TSG RAN Meeting #85

[0009] Non-Patent Document 3: RP-190224, Revised SID: Study on NR V2X, 3GPP TSG RAN Meeting #83

[0010] Non-Patent Document 4: RP-200129, Revised WID on 5G V2X with NR sidelink, 3GPP TSG RAN Meeting #87-e

[0011] Non-Patent Document 5: RP-202846, Revised WID on NR Sidelink Enhancement, 3GPP TSG RAN Meeting #90-e

[0012] Non-Patent Document 6: RP-222806, Revised WID: NR sidelink evolution, 3GPP TSG RAN Meeting #98-e

[0013] Non-Patent Document 7: RP-182155, Revised SID: Study on NR positioning support, 3GPP TSG RAN Meeting #81

[0014] Non-Patent Document 8: RP-200218, Revised WID: NR positioning support, 3GPP TSG RAN Meeting #87-e

[0015] Non-Patent Document 9: RP-210903, Revised WID: NR Positioning Enhancements, 3GPP TSG RAN Meeting #91-e

[0016] Non-Patent Document 10: RP-222616, Revised SID on Study on expanded and improved NR positioning, 3GPP TSG RAN Meeting #97-e

[0017] Non-Patent Document 11: RP-223549, New WID on Expanded and Improved NR Positioning, 3GPP TSG RAN Meeting #98-e Summary of the Invention

[0018] In order to solve at least part of the above problems, the present disclosure provides a method performed by a user equipment and a user equipment, wherein, when performing resource selection or reselection for a side selected license, the minimum time interval between any two resources selected for the side selected license is determined according to the last PSSCH symbol in the time slot where the earlier resource of the two resources is located, so that the determined minimum time interval is consistent in the shared SL PRS resource pool and the traditional resource pool without SL PRS configuration, thereby reducing the UE processing complexity in the shared SL PRS resource pool; in addition, in operations with shared spectrum channel access, the minimum time interval is determined according to the last PSFCH reception timing corresponding to a PSSCH transmission, so that the minimum time interval is independent of the PSFCH reception actually performed by the UE, thereby reducing the UE processing complexity in operations with shared spectrum channel access.

[0019] According to the present disclosure, a method performed by a user equipment is proposed, characterized in that it includes: creating a sideline selection grant; and selecting multiple resources for the sideline selection grant in a sideline resource pool; wherein, if PSFCH is configured in the sideline resource pool, the time interval between any two resources of the multiple resources is greater than or equal to a minimum time interval, wherein the minimum time interval at least partially includes the time interval from the end of the last PSSCH symbol of the time slot in which a PSSCH transmission in the earlier of the two resources is located to the beginning of the first symbol of the corresponding PSFCH reception.

[0020] In addition, according to the present disclosure, a user equipment is proposed, including: a processor; and a memory storing instructions, wherein the instructions execute the above method when executed by the processor.

[0021] Therefore, the present disclosure provides a method, wherein, when performing resource selection or reselection for a side selected license, the minimum time interval between any two resources selected for the side selected license is determined based on the last PSSCH symbol in the time slot where the earlier resource of the two resources is located, so that the determined minimum time interval is consistent in the shared SL PRS resource pool and the traditional resource pool without SL PRS configuration, thereby reducing the UUE processing complexity in the shared SL PRS resource pool; in addition, in operations with shared spectrum channel access, the minimum time interval is determined based on the last PSFCH reception timing corresponding to a PSSCH transmission, so that the minimum time interval is independent of the PSFCH reception actually performed by the UE, thereby reducing the UE processing complexity in operations with shared spectrum channel access. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The above and other features of the present disclosure will become more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which:

[0023] FIG1 shows a flowchart corresponding to a method executed by a UE according to a first embodiment of the present disclosure.

[0024] FIG2 shows a block diagram of a UE involved in the present disclosure. DETAILED DESCRIPTION

[0025] The present disclosure is described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that the present disclosure is not limited to the specific embodiments described below. In addition, for the sake of simplicity, detailed descriptions of known technologies that are not directly related to the present disclosure are omitted to prevent confusion in understanding the present disclosure.

[0026] The following describes various embodiments of the present disclosure using the 5G wireless communication system specifications developed by 3GPP and their subsequent evolutionary versions (e.g., 5G Advanced) as example application environments. However, it should be noted that the present disclosure is not limited to the following embodiments, but is applicable to many other wireless communication systems, such as wireless communication systems after 5G, and 4G mobile communication systems before 5G, such as LTE, LTE-Advanced, and LTE-Advanced Pro.

[0027] The terms given in this disclosure may be named differently in different wireless communication systems, but unified terms are used in this disclosure, and when applied to a specific system, they can be replaced with terms used in the corresponding system.

[0028] In all embodiments and implementations of the present disclosure, unless otherwise specified:

[0029] ●“Node” and “communication node” are interchangeable.

[0030] ● “Device” and “User Equipment” (UE) are interchangeable.

[0031] ●“Base station” may refer to a base station of a 4G or its evolved system, or may refer to a base station of a 5G or its evolved system, or may refer to a base station in other communication systems.

[0032] ●“TX” can mean transmission.

[0033] ●“RX” can mean reception.

[0034] ● Any two of “predefined”, “predetermined” and “preset” can be interchanged.

[0035] ● “Number” and “index” are interchangeable. For example, the number of a resource block (RB) can also be called the index of the RB; for example, “numbering an RB as 0” can also be expressed as “indexing an RB as 0.”

[0036] ●The elements in a set (or array, or list, or sequence, etc.) can correspond to indexes 0, 1, 2, ..., in the order in which they appear, or 1, 2, 3, ..., in the order in which they appear. For example, the set {t0, t1, ..., t N-1}, and t N-1 They may correspond to indexes 0, 1, ..., and N-1 respectively.

[0037] An element in a collection (or array, or list, or sequence, etc.) can be referred to by its index (e.g., the subscript of the element in the collection, array, list, or sequence). For example, a resource element (RE) with an index of 0 can be referred to as "RE 0."

[0038] ●The index corresponding to an object (e.g., a subcarrier, a time slot, a cyclic shift, etc.) (e.g., the index of the object in a set, an array, a list, or a sequence) can be used as the "identifier" (ID) of the object.

[0039] ●The index corresponding to an object can be used to indicate the object in signaling.

[0040] If no quantity is specified when referring to an object, the number of the object may be one or more. For example, in "perform transmission on a channel", the "transmission(s)" may correspond to one transmission or multiple transmissions.

[0041] ● A time series or a corresponding set (e.g., a set of time slots {t0, t1, ..., t N-1 The elements in}) may appear in chronological order, for example, the time corresponding to time slot t0 is earlier than (or no later than) the time corresponding to time slot t1, the time corresponding to time slot t1 is earlier than (or no later than) the time corresponding to time slot t2, and so on.

[0042] ●Δ(x1, x2) can represent the offset between x1 and x2 (offset between x1 and x2; or, “offset of x2 with respect to x1”; or, “offset from x1 to x2”), where x1 and x2 can be the values ​​of two comparable parameters (or variables), or can be two possible values ​​of a parameter (or variable). If x1 and x2 are two time parameters (or variables), then Δ(x1, x2)>0 can represent that the time corresponding to x1 is earlier than the time corresponding to x2, Δ(x1, x2)≥0 can represent that the time corresponding to x1 is earlier than or equal to the time corresponding to x2, Δ(x1, x2)<0 can represent that the time corresponding to x1 is later than the time corresponding to x2, and Δ(x1, x2)≤0 can represent that the time corresponding to x1 is later than or equal to the time corresponding to x2. For example, if x1 and x2 are two time slots in a resource pool, then Δ(x1, x2) can be defined as the difference between the time slot index corresponding to the time slot x2 and the time slot index corresponding to the time slot x1, where the time slot index can be a physical time slot index or a logical time slot index (for example, the index of the corresponding time slot in the time slot set of the resource pool).

[0043] Δf may represent the subcarrier spacing (SCS) of a carrier or a bandwidth segment, for example, Δf = 15 kHz, Δf = 30 kHz, Δf = 60 kHz, or Δf = 120 kHz.

[0044] μ can represent the SCS configuration corresponding to an SCS. For example, μ = 0 corresponds to Δf = 15 kHz; μ = 1 corresponds to Δf = 30 kHz; μ = 2 corresponds to Δf = 60 kHz; and μ = 3 corresponds to Δf = 120 kHz.

[0045] ●Constant T c It can be defined as: T c =1 / (Δf max ·N f ), where Δf max =480·10 3 Hz, N f =4096.

[0046] ●The constant K can be defined as: K = T s / T c =64, where T s =1 / (Δf ref·N f，ref ), Δf ref =15·10 3 Hz, N f，ref =2048.

[0047] In some aspects, a bit string (e.g., 'b0b1...b L-1 '), the leftmost bit (ie, b0) can correspond to the most significant bit (MSB), and accordingly, the rightmost bit (ie, b L-1 ) may correspond to the least significant bit (LSB).

[0048] In some aspects, a bit string (e.g., 'b0b1...b L-1 '), the leftmost bit (ie, b0) may correspond to the least significant bit, and accordingly, the rightmost bit (ie, b L-1 ) can correspond to the most significant bit.

[0049] In some aspects, a bit string can be referred to as a bitmap (or bit map), and vice versa.

[0050] In some aspects, a priority level may correspond to a priority value, for example, one priority level may correspond to a priority value of 1, and another priority level may correspond to a priority value of 8.

[0051] In some aspects, a relationship between a priority and its corresponding priority value can be such that as the priority value increases, the priority decreases. For example, if a first side transmission and a second side transmission are associated with priority values ​​of 1 and 2, respectively, the priority of the first side transmission is higher than the priority of the second side transmission.

[0052] In some aspects, a relationship between a priority and its corresponding priority value can be such that as the priority value increases, the priority increases. For example, if a first sideline transmission and a second sideline transmission are associated with priority values ​​of 1 and 2, respectively, the priority of the first sideline transmission is lower than the priority of the second sideline transmission.

[0053] In some aspects, an "operating band" may refer to an operating band whose duplex mode is FDD (Frequency Division Duplex), or an operating band whose duplex mode is TDD (Time Division Duplex), or an operating band defined in other ways.

[0054] In some aspects, "node" may refer to a network node (eg, a base station) or may refer to a non-network node (eg, a UE).

[0055] In some respects, "Layer 1" and "Physical Layer" are interchangeable.

[0056] In some aspects, "Layer 2" may not include any sub-layers.

[0057] In some aspects, "Layer 2" may include one or more sublayers, such as part or all of MAC (Medium Access Control), RLC (Radio Link Control), PDCP (Packet Data Convergence Protocol), and SDAP (Service Data Adaptation Protocol).

[0058] In some aspects, "higher layer(s)" (or upper layer(s)) may refer to one or more protocol layers or protocol sublayers above a reference protocol layer or reference protocol sublayer in a particular protocol stack (e.g., an access stratum protocol stack). For example, if the reference protocol layer or reference protocol sublayer is a physical layer, the "higher layer" may at least partially include a MAC layer, an RLC layer, a PDCP layer, an SDAP layer, an RRC (Radio Resource Control) layer, a PC5-RRC layer, and part or all of the PC5-S layer. In all embodiments and implementations of the present disclosure, unless otherwise specified, the reference protocol layer or reference protocol sublayer may be a physical layer. Where there is no risk of confusion, a "higher layer" may also be referred to as a "higher layer."

[0059] In some aspects, "lower layer(s)" may refer to one or more protocol layers or protocol sublayers below a reference protocol layer or reference protocol sublayer in a particular protocol stack. For example, if the reference protocol layer or reference protocol sublayer is the RRC layer, the "lower layer" may include part or all of the MAC layer and the physical layer; for another example, if the reference protocol layer or reference protocol sublayer is the MAC layer, the "lower layer" may refer to the physical layer. In all embodiments and implementations of the present disclosure, unless otherwise specified, the reference protocol layer or reference protocol sublayer may be the MAC layer. Where there is no risk of confusion, the "lower layer" may also be referred to as the "lower layer."

[0060] In some aspects, "signaling" may refer to physical layer signaling, such as DCI (Downlink Control Information), UCI (Uplink Control Information), and SCI (Sidelink Control Information).

[0061] In some aspects, "signaling" may refer to higher-layer signaling, such as MAC CE (Control Element) or RRC message.

[0062] In some aspects, a "parameter" may refer to a physical layer parameter, or may refer to a higher layer parameter.

[0063] In some aspects, a "parameter" may refer to a predefined parameter. For example, the number of subcarriers in each RB Can be a predefined constant, such as

[0064] In some aspects, a "parameter" may refer to a "configured" parameter. For example, configuration information corresponding to a "configured" parameter (e.g., including the value of the parameter) may be provided by a protocol layer (e.g., the RRC layer) in a communication node to another protocol layer (e.g., the physical layer); for another example, configuration information corresponding to a "configured" parameter (e.g., the value of the parameter) may be provided by a protocol layer (e.g., the RRC layer) in a communication node to a peer protocol layer in another communication node; for another example, configuration information corresponding to a "configured" parameter (e.g., the value of the parameter) may be pre-set in a specific storage location in a communication node or other storage location accessible to the node. In this case, the "configured" parameter may also be referred to as a "pre-configured" parameter.

[0065] In all embodiments and implementations of the present disclosure, unless otherwise specified, “parameter” may refer to a higher-level parameter.

[0066] In all embodiments and implementations of the present disclosure, unless otherwise specified, "higher layer parameters" may refer to RRC parameters.

[0067] In all embodiments and implementations of the present disclosure, unless otherwise specified, a “symbol” may refer to an OFDM (Orthogonal Frequency Division Multiplexing) symbol.

[0068] In some aspects, a resource may be identified, at least in part, by one or more parameters in the time domain. For example, the one or more parameters may include some or all of the following: a starting symbol for the resource, a starting time slot for the resource, a number of symbols occupied by the resource, and a number of time slots occupied by the resource.

[0069] In some aspects, a resource may be identified, at least in part, by one or more parameters in the frequency domain. For example, the one or more parameters may include some or all of the following: a starting subchannel for the resource, a starting RB for the resource, a starting subcarrier for the resource, a number of subchannels occupied by the resource, a number of RBs occupied by the resource, and a number of subcarriers occupied by the resource.

[0070] In some aspects, a resource may be identified at least in part by one or more parameters in the code domain. For example, the one or more parameters may include some or all of the following: a cyclic shift value or a corresponding cyclic shift index corresponding to the resource, and a cyclic shift pair value or a corresponding cyclic shift pair index corresponding to the resource.

[0071] In some aspects, a resource may be identified, at least in part, by one or more parameters in the spatial domain. For example, the one or more parameters may include a layer to which the resource corresponds, where a "layer" may refer to one of one or more layers to which a TB (Transport Block) or its corresponding codeword is mapped in spatial multiplexing.

[0072] In some aspects, "RB" may refer to a PRB (physical resource block), and accordingly, "RB index" may refer to a PRB index.

[0073] In some aspects, "RB" may refer to a VRB (virtual resource block), and accordingly, "RB index" may refer to a VRB index.

[0074] In some aspects, "RB" may refer to a CRB (common resource block), and accordingly, "RB index" may refer to a CRB index.

[0075] In some aspects, "RB" may refer to an IRB (Interlaced Resource Block), and accordingly, "RB index" may refer to an IRB index.

[0076] In some aspects, in the time domain, a "frame" (or "radio frame") may refer to a system frame (the corresponding frame number may be referred to as a system frame number, SFN).

[0077] In some aspects, in the time domain, a "frame" (or "radio frame") may refer to a direct frame (the corresponding frame number may be referred to as a direct frame number, DFN).

[0078] In some aspects, a frame number cycle (or frame cycle) may include T FNP = 1024 frames, for example, indexed as 0, 1, ..., 1023 in chronological order. The duration of each frame can be T f = 10 milliseconds, which can contain 10 subframes, where the duration of each subframe is T sf = 1 millisecond. Each subframe can contain time slots, for example, The index of a time slot in a subframe can be recorded as The index of a time slot in a frame can be recorded as in, Can be equal to 10·2 μ The index of a time slot in the frame period can be recorded as in Can be equal to (For example, 1024·(10·2 μ )=10240·2 μ ).

[0079] In some aspects, a frame number cycle may be a SFN cycle.

[0080] In some aspects, a frame number cycle may be a DFN cycle.

[0081] In some aspects, a "physical time slot" may refer to a time slot belonging to a physical time slot set, where the physical time slot set may be all time slots in a continuous period of time (e.g., a frame number period; for example, a frame; for example, a subframe); the physical time slots in the physical time slot set may be indexed in chronological order as 0, 1, ...

[0082] In some aspects, "transmission" may refer to uplink transmission, or may refer to downlink transmission, or may refer to sidelink transmission.

[0083] In some aspects, "carrier" may refer to an uplink carrier, or may refer to a downlink carrier, or may refer to a sidelink carrier.

[0084] In some aspects, a "bandwidth segment" may refer to an upstream bandwidth segment, or may refer to a downstream bandwidth segment, or may refer to a sidelink bandwidth segment.

[0085] In some aspects, an SCS may be configured (or provided) for a bandwidth segment, for example, the SCS may be provided by the parameter subcarrierSpacing. In some aspects, unless otherwise specified (or unless otherwise configured), the SCS may be used for all channels (or all physical layer channels) and all signals (or all physical layer signals) in the bandwidth segment. In some aspects, the applicable SCS may be related to the frequency range, for example, for FR1 (Frequency Range 1), the applicable SCS may at least partially include 15kHz, 30kHz, and 60kHz; for example, for FR2-1 (Frequency Range 2-1), the applicable SCS may at least partially include 60kHz and 120kHz; for example, for FR2-2 (Frequency Range 2-2), the applicable SCS may at least partially include 120kHz, 480kHz, and 960kHz.

[0086] In some aspects, the SCS of an uplink bandwidth segment may be referred to as an "uplink SCS" (or "UL SCS"), the SCS of a downlink bandwidth segment may be referred to as a "downlink SCS" (or "DL SCS"), and the SCS of a sidelink bandwidth segment may be referred to as a "sidelink SCS" (or "SL SCS").

[0087] In some aspects, "operation" may refer to an upstream operation, or may refer to a downstream operation, or may refer to a sideways operation.

[0088] In some aspects, a "transmission" may correspond to a transmission on a physical channel. For example, the physical channel may be a PDCCH (Physical Downlink Control Channel), or a PDSCH (Physical Downlink Shared Channel), or a PRACH (Physical Random-Access Channel), or a PBCH (Physical Broadcast Channel), or a PUCCH (Physical Uplink Control Channel), or a PUSCH (Physical Uplink Shared Channel), or a PSCCH (Physical Sidelink Control Channel), or a PSSCH (Physical Sidelink Shared Channel), or a PSFCH (Physical Sidelink Feedback Channel), or a PSBCH (Physical Sidelink Broadcast Channel), or other physical channels.

[0089] In some aspects, a "transmission" may correspond to the transmission of a physical signal. For example, the physical signal may be a PSS (Primary Synchronization Signal), or an SSS (Secondary Synchronization Signal), or a CSI-RS (Channel-State Information Reference Signal), or a DM-RS (or DMRS, Demodulation Reference Signal), or a PT-RS (Phase-tracking reference signals), or an SRS (Sounding Reference Signal), or a RIM-RS (Remote Interference Management Reference Signal), or an S-PSS (Sidelink primary synchronization signal), or an S-SSS (Sidelink secondary synchronization signal), or an SL PRS (Sidelink Positioning Reference Signal), or other physical signals.

[0090] In some aspects, a "transmission" may correspond to the transmission of zero or one or more physical channels and zero or one or more physical signals multiplexed in the same resource (e.g., a time-frequency in a resource pool; or, alternatively, several RBs in a time slot). For example, an "SS / PBCH block" (or "SSB" or "SS block") may consist of a PSS, an SSS, and a PBCH multiplexed in the same time slot; for example, an "S-SS / PSBCH block" (or "S-SSB" or "S-SS block" or "sidelink SSB") may consist of an S-PSS, an S-SSS, and a PSBCH multiplexed in the same time slot; for example, a "PSCCH / PSSCH" (or "PSSCH / PSCCH") may consist of a PSCCH and its associated PSSCH multiplexed in the same time slot (e.g., a time slot in a resource pool). Here, "S-SS / PSBCH" may represent Sidelink Synchronization Signal / Physical Sidelink Broadcast Channel.

[0091] In some aspects, DCI carried in a downlink transmission (e.g., PDCCH) corresponding to a specific DCI format (e.g., denoted as DCI format X) may be referred to as "a DCI format X." For example, DCI carried in a PDCCH corresponding to DCI format 0_0 may be referred to as "a DCI format 0_0."

[0092] In some aspects, when there is no risk of confusion, the name of a physical channel (or physical signal) used for transmission can be used to refer to the transmission of the physical channel (or physical signal). For example, "PSFCH" can mean "PSFCH transmission".

[0093] In some aspects, when there is no risk of confusion, the name of a physical channel (or physical signal) used for reception can be used to refer to the reception of the physical channel (or physical signal). For example, "PSFCH" can mean "PSFCH reception".

[0094] In some aspects, "sideline" may refer to NR sideline. For example, a physical sideline channel or signal (e.g., PSSCH) may refer to a physical sideline channel or signal in NR (e.g., NR PSSCH). In all embodiments and implementations of the present disclosure, "sideline" may refer to NR sideline unless otherwise specified.

[0095] In some aspects, "sidelink" may refer to LTE sidelink. For example, a physical sidelink channel or signal (eg, PSSCH) may refer to a physical sidelink channel or signal in LTE (eg, LTE PSSCH).

[0096] In some aspects, "sideline operations" may include, at least in part, some or all of sideline reception, sideline transmission, and sideline measurement.

[0097] In some aspects, "sidewalk operation" may be used, at least in part, for some or all of the sidewalk functions including sidewalk communication, sidewalk discovery, and sidewalk positioning. For example, "sidewalk reception" may include reception for sidewalk communication; for another example, "sidewalk transmission" may include transmission for sidewalk discovery; for another example, "sidewalk measurement" may include measurement for sidewalk positioning.

[0098] In some aspects, a "resource pool" (or pool of resources) may refer to a sideline resource pool.

[0099] In some aspects, a sidelink dynamic grant (or dynamic sidelink grant) may refer to a sidelink grant that is dynamically received on a PDCCH. In some aspects, a sidelink dynamic grant may apply to sidelink resource allocation mode 1 and / or sidelink resource allocation scheme 1.

[0100] In some aspects, a sidelink configured grant (or configured sidelink grant) may refer to a semi-persistent sidelink grant configured via RRC. In some aspects, a sidelink configured grant may apply to sidelink resource allocation mode 1 and / or sidelink resource allocation scheme 1.

[0101] In some aspects, a "sidelink selected grant" (or "selected sidelink grant") may refer to a sidelink grant that is autonomously selected (or "autonomously created") by a MAC entity (e.g., a MAC entity of a UE). In some aspects, a "sidelink selected grant" may apply to sidelink resource allocation mode 2 and / or sidelink resource allocation scheme 2.

[0102] In some aspects, a "sidelink identity" (sidelink ID) may refer to a layer 1 sidelink identifier, or may refer to a layer 2 sidelink identifier, or may refer to a higher layer sidelink identifier.

[0103] In some aspects, a "sidelink identifier" can be used as a "destination identifier" (destination ID). For example, a destination identifier indicated in a multicast transmission can be used to identify a group corresponding to the multicast transmission; for another example, a destination identifier indicated in a broadcast transmission can be used to identify a service corresponding to the broadcast transmission; for another example, a destination identifier indicated in a unicast transmission can be used to identify the intended receiving UE of the unicast transmission (for example, the destination identifier can be a source identifier of the intended receiving UE).

[0104] In some aspects, a “sidelink identifier” can be used as a “source identifier” (source ID). For example, a source identifier indicated in a unicast (or multicast, or broadcast) transmission can be used to identify the UE performing the transmission.

[0105] In some aspects, a "priority level" may be referred to as a "side priority level."

[0106] In some aspects, a "sidelink resource" may refer to a resource that can be used for a sidelink transmission. For example, a sidelink resource may be a time-frequency resource corresponding to a symbol or multiple consecutive symbols in a time slot in the time domain and corresponding to one or more subchannels in the frequency domain.

[0107] In some aspects, a "sidebar symbol" may refer to a symbol that is predefined for sidebar use.

[0108] In some aspects, a "sidewalk symbol" may refer to a symbol configured for sidewalking. In some aspects, "sidewalking" may not include operations such as transmission and / or reception of S-SSBs, or may include operations such as transmission and / or reception of S-SSBs.

[0109] In some aspects, a "logical time slot" may refer to a time slot belonging to a resource pool.

[0110] In some aspects, a "logical time slot" may refer to a time slot that may be configured to belong to a resource pool.

[0111] In some aspects, a "sideways time slot" may refer to a time slot belonging to a resource pool.

[0112] In some aspects, a "sidetrack timeslot" may refer to a timeslot that may be configured to belong to a resource pool.

[0113] In some aspects, a "sidetrack slot" may refer to a slot containing sidetrack symbol(s).

[0114] In some aspects, a "sideline timeslot" may refer to a timeslot that may be used for sideline transmission and / or sideline reception.

[0115] In some aspects, one "side slot" may be applicable for transmission and / or reception of part or all of the PSSCH, PSCCH, and PSFCH.

[0116] In some aspects, a "side slot" is not suitable for transmission and / or reception of S-SSBs, and accordingly, a "side slot" is a slot not used for S-SSBs.

[0117] In some aspects, the "symbol index" of a symbol may refer to the index of the symbol within the time slot in which it resides.

[0118] In some aspects, the SCI corresponding to a particular SCI format (e.g., denoted as SCI format X) carried in a sidelink transmission (e.g., a PSCCH transmission; another example, a PSSCH transmission; another example, a PSCCH / PSSCH transmission) may be referred to as "an SCI format X." For example, the SCI corresponding to SCI format 1-A carried in a PSCCH transmission may be referred to as "an SCI format 1-A," and for another example, the SCI corresponding to SCI format 2-A carried in a PSSCH transmission may be referred to as "an SCI format 2-A."

[0119] In some aspects, "SCI" ​​may refer to "single-stage SCI."

[0120] In some aspects, "SCI" ​​can refer to part or all of a "two-stage SCI". For example, "SCI" ​​can refer to a first stage SCI (1 st -stage SCI) format, or a second-stage SCI (2 nd -stage SCI) format, or a first-stage SCI format and its associated second-stage SCI format.

[0121] In some aspects, a sidelink bandwidth segment may be associated, at least in part, with one or more of the following parameters:

[0122] ● A "number of side symbols", for example, in Can be an integer greater than or equal to 1.

[0123] ●A "type 0 starting side symbol", for example, the corresponding symbol index is in Can be an integer greater than or equal to 0.

[0124] ●A "Type 1 starting side symbol", for example, the corresponding symbol index is in Can be an integer greater than or equal to 0.

[0125] ●A "Type 2 starting side symbol", for example, the corresponding symbol index is in Can be an integer greater than or equal to 0.

[0126] In some aspects, the Can be configured (or provided) by a higher layer parameter (e.g., sl-LengthSymbols), or can be determined based on one or more higher layer parameters. The value of can be an element from the set {7, 8, 9, 10, 11, 12, 13, 14}.

[0127] In some aspects, the Can be configured (or provided) by a higher layer parameter (e.g., sl-StartSymbol), or can be determined based on one or more higher layer parameters. The value of can be an element from the set {0, 1, 2, 3, 4, 5, 6, 7}.

[0128] In some aspects, the Can be configured (or provided) by a higher layer parameter (e.g., sl-StartingSymbolFirst), or can be determined based on one or more higher layer parameters. The value of can be an element from the set {0, 1, 2, 3, 4, 5, 6}.

[0129] In some aspects, the Can be configured (or provided) by a higher layer parameter (e.g., sl-StartingSymbolSecond), or can be determined based on one or more higher layer parameters. The value of can be an element from the set {3, 4, 5, 6, 7}.

[0130] In some aspects, in a time slot, the symbol Later than symbol For example, and

[0131] In some aspects, a side symbol in a time slot may be consecutive symbols, for example, the corresponding symbol indices can be as well as in, Can be an integer greater than or equal to 0.

[0132] In some aspects, the Can be equal to the

[0133] In some aspects, if the parameter sl-StartingSymbolFirst and the parameter sl-StartingSymbolSecond are not provided for the corresponding sideband bandwidth segment, the Can be equal to the

[0134] In some aspects, if the parameter sl-StartingSymbolFirst and the parameter sl-StartingSymbolSecond are provided for the corresponding sideband bandwidth segment, the Can be equal to the

[0135] In some aspects, in the time domain, a PSSCH transmission may correspond to one or more consecutive symbols in a "PSSCH symbol(s)" in the time slot in which it is located.

[0136] In some aspects, a "PSSCH symbol" in a time slot may be part or all of the symbols configured for sidewalks in the time slot. For example, the "PSSCH symbol" may consist of symbols symbol and symbols , one or more symbols that satisfy the “PSSCH symbol restriction”, wherein the “PSSCH symbol restriction” may at least partially include one or more of the following:

[0137] The "PSSCH symbols" are consecutive symbols.

[0138] ●The starting symbol of the "PSSCH symbol" (i.e., the symbol with the smallest symbol index in the "PSSCH symbol", for example, )equal

[0139] ● Equal to the

[0140] ● equal

[0141] ● Equal to the

[0142] If the parameter sl-StartingSymbolFirst and the parameter sl-StartingSymbolSecond are not provided for the corresponding sideband bandwidth segment, then the equal

[0143] If the parameter sl-StartingSymbolFirst and the parameter sl-StartingSymbolSecond are not provided for the corresponding sideband bandwidth segment, then the Equal to the

[0144] If the parameter sl-StartingSymbolFirst and the parameter sl-StartingSymbolSecond are provided for the corresponding sideband bandwidth segment, then equal

[0145] If the parameter sl-StartingSymbolFirst and the parameter sl-StartingSymbolSecond are provided for the corresponding sideband bandwidth segment, then Equal to the

[0146] If PSFCH is configured in the time slot, the "PSSCH symbol" does not include the symbol (symbol(s)) configured for PSFCH.

[0147] If PSFCH is configured in the time slot, the "PSSCH symbol" does not include the symbol immediately preceding the symbol (symbol(s)) configured for PSFCH.

[0148] The “PSSCH symbol” does not include the last symbol in the time slot that is configured for sidelink (e.g., the symbol ).

[0149] In some aspects, a PSSCH transmission and its associated PSCCH transmission are in the same time slot, wherein the PSCCH transmission can carry the "first segment SCI" in the SCI associated with the PSSCH transmission, and the "second segment SCI" in the SCI can be carried in the PSSCH.

[0150] In some aspects, for operations without shared spectrum channel access, in a resource pool configured with PSFCH, one PSSCH transmission (or, one PSSCH transmission opportunity) may correspond to one PSFCH reception (or, one PSFCH reception opportunity).

[0151] In some aspects, for operations with shared spectrum channel access (or, operations with shared spectrum channel access in FR1), in a resource pool configured with PSFCH, one PSSCH transmission (or, one PSSCH transmission opportunity) can correspond to one or more PSFCH receptions (or, one or more PSFCH reception opportunities).

[0152] In some aspects, in a resource pool configured with a PSFCH, one or more PSFCH receptions (or one or more PSFCH reception opportunities) corresponding to a PSSCH transmission (or a PSSCH transmission opportunity) may be determined at least in part based on one or more of the following:

[0153] ● A “minimum slot offset from PSSCH to PSFCH”. For example, the “minimum slot offset from PSSCH to PSFCH” may be configured (or provided) by a higher layer parameter sl-MinTimeGapPSFCH.

[0154] ● One “PSFCH resource period”: For example, the “PSFCH resource period” may be configured (or provided) by a higher layer parameter sl-PSFCH-Period.

[0155] ● A "candidate PSFCH opportunity set". For example, the "candidate PSFCH opportunity set" may be configured (or provided) by a higher-layer parameter sl-candidatePSFCH-Occasions. In some aspects, the "candidate PSFCH opportunity set" may be applicable (or, applicable and applicable only) to operation with shared spectrum channel access (or, operation with shared spectrum channel access in FR1).

[0156] In some aspects, "positioning" may include, at least in part, part or all of "absolute positioning," "relative positioning," and "ranging."

[0157] In some aspects, a “target UE” (or target device) may refer to a UE that is being positioned.

[0158] In some aspects, an “anchor UE” (anchor UE, or anchor device) may refer to a UE that provides support for positioning of a target UE.

[0159] In some aspects, a "server UE" may refer to a UE that can provide some or all of the functionality for services based on sideways positioning and / or ranging, including positioning method determination, positioning assistance information distribution, and position information calculation. A server UE can interact with other UEs via the PC5 interface. A server UE can be a target UE, an anchor UE, or another UE.

[0160] In some aspects, one sidelink resource pool may be used to transmit part or all of the PSSCH and SL PRS, or may be used to receive part or all of the PSSCH and SL PRS.

[0161] In some aspects, a "shared SL PRS resource pool" (or referred to as a "SL PRS shared resource pool") may refer to a sidelink resource pool that may be used to transmit SL PRS and PSSCH.

[0162] In some aspects, a "dedicated SL PRS resource pool" (or referred to as a "SL PRS dedicated resource pool") may refer to a sidelink resource pool that can be used to transmit SL PRS but cannot be used to transmit PSSCH.

[0163] In some aspects, an SL PRS transmission and its associated PSCCH transmission are in the same time slot.

[0164] In some aspects, in one shared SL PRS resource pool, SCI format 2-D may be used to decode PSSCH and schedule part or all of the SL PRS.

[0165] In some aspects, a UE performs only one SL PRS transmission in a time slot. For example, the UE may not transmit on more than one SL PRS resource in the time slot.

[0166] In some aspects, in a time slot of a shared SL PRS resource pool, a SL PRS transmission associated with a PSCCH transmission may occupy a portion of consecutive symbols in the "PSSCH symbols" in the time slot, and any symbol occupied by the SL PRS transmission is different from any symbol occupied by the PSSCH transmission associated with the PSCCH transmission.

[0167] In some aspects, a SL PRS resource may be associated, at least in part, with one or more of the following parameters:

[0168] ● A “SL PRS resource identifier” (or, SL PRS resource identity). In some aspects of the present disclosure, the SL PRS resource ID may be an integer greater than or equal to 0. In some aspects of the present disclosure, the SL PRS resource ID may be an integer greater than or equal to 1.

[0169] One or more parameters corresponding to a corresponding comb-like pattern, for example, including a "comb size" and a "comb offset" (or RE offset).

[0170] ● A "number of SL PRS symbols" (e.g. ). It can be used to indicate the number of symbols (eg, consecutive symbols) occupied by the SL PRS resource in a time slot.

[0171] ● A "SL PRS start symbol" (e.g. ). It can be used to indicate the index of the first symbol (or called "starting symbol") occupied by the SL PRS resource in a time slot. Accordingly, the indexes of all symbols occupied by the SL PRS resource in the time slot can be expressed in chronological order as as well as In some aspects, the May be applicable to (or, applicable to and only applicable to) one dedicated SL PRS resource pool.

[0172] In some aspects, in a time slot of a dedicated SL PRS resource pool, a SL PRS resource may be uniquely identified by its SL PRS resource ID.

[0173] In some aspects, in a time slot of a shared SL PRS resource pool, a SL PRS resource may be uniquely identified at least in part by a combination of one or more of the following:

[0174] ●The SL PRS resource ID of the SL PRS resource.

[0175] ●The “SL PRS frequency domain resource allocation” of the SL PRS resource, that is, the frequency domain resource allocated to the SL PRS resource in the time slot.

[0176] ●The SL PRS start symbol of the SL PRS resource

[0177] In some aspects, the SL PRS resources (resource(s)) in a time slot of a shared SL PRS resource pool may be configured by a higher layer parameter (e.g., sl-PRS-ResourcesSharedSL-PRS-RP), or may be determined based on one or more higher layer parameters. For example, the higher layer parameter sl-PRS-ResourcesSharedSL-PRS-RP may be used to configure (or provide) a shared SL PRS resource pool. A set of elements (e.g. in, can be an integer greater than or equal to 1, the set Each element in may correspond to a SL PRS resource (and, a corresponding SL PRS resource ID). The value of can be an element in the set {1, 2, ..., 17}.

[0178] In some aspects, the set The IE (Information Element) corresponding to each SL PRS resource in the SL PRS resource (for example, SL-PRS-ResourceSharedSL-PRS-RP) may at least partially include some or all of the following parameters associated with the SL PRS resource:

[0179] ● SL PRS Resource ID. For example, the SL PRS Resource ID may be configured (or provided) by the parameter sl-PRS-ResourceID. In some aspects, the value of the SL PRS Resource ID may be an element in the set {0, 1, ..., 16}.

[0180] SL PRS symbol number. For example, the SL PRS symbol number may be configured (or provided) by the parameter sl-NumberOfSymbols (or mNumberOfSymbols). In some aspects, the value of the SL PRS symbol number may be an element in the set {1, 2, ..., 9}.

[0181] Comb size and comb offset: For example, the comb size and comb offset may be configured (or provided) by the parameter sl-PRS-CombSizeN-AndReOffset.

[0182] In some aspects, the parameter sl-PRS-ResourcesSharedSL-PRS-RP is configured Each of the SL PRS resources can be associated with a "SL PRS resource index". SL PRS Resources The corresponding SL PRS resource index may be equal to the SL PRS resource In the collection The index in (i.e., i).

[0183] In some aspects, a second-segment SCI format (e.g., SCI format 2-D) may be used to schedule SL PRSs in a shared SL PRS resource pool. For example, an SCI format 2-D may include a "SL PRS Resource ID" field to indicate the set In some aspects, the size of the "SL PRS Resource ID" field is In some aspects, the value of the "SL PRS Resource ID" field may be indicated by a higher layer.

[0184] In some aspects, to meet some signaling design constraints (e.g., to ensure that the size of the "SL PRS Resource ID" field in an SCI format 2-D is no larger than bits), the configuration information in the parameter sl-PRS-ResourcesSharedSL-PRS-RP (and accordingly, the set ) impose one or more restrictions, including, for example, one or more of the following:

[0185] Yes The SL PRS resource ID is equal to the The "SL PRS Resource Index".

[0186] Yes The SL PRS resource ID is equal to the In the collection The index in .

[0187] Yes The SL PRS resource ID is equal to i.

[0188] Yes The SL PRS resource ID is less than or equal to

[0189] Yes The SL PRS resource ID is less than

[0190] Yes And i0≠i1, The SL PRS resource ID is not equal to SL PRS resource ID.

[0191] In some aspects, in a shared SL PRS resource pool, an SL PRS transmission may occupy one or more symbols of a "PSSCH symbol" in a time slot that meet an "SL PRS symbol restriction," where the "SL PRS symbol restriction" may include, at least in part, one or more of the following:

[0192] ●The SL PRS transmission occupies consecutive symbols.

[0193] ●The SL PRS transmission and PSSCH DMRS are not transmitted in the same symbol.

[0194] ●The SL PRS transmission and SL CSI-RS are not transmitted in the same symbol.

[0195] ●The SL PRS transmission occupied The consecutive symbols are between two adjacent PSSCH DMRS symbols, or after a DMRS symbol (for example, after the last DMRS symbol).

[0196] • The SL PRS is transmitted after the last symbol for the second segment of the SCI.

[0197] ●For a given The SL PRS transmission occupies the last symbol in the slot that meets all other "SL PRS symbol restrictions". consecutive symbols.

[0198] In some aspects, in a shared SL PRS resource pool, the last "PSSCH symbol" in a time slot may be the last symbol of a PSSCH transmission in the time slot, or may be the last symbol of a SL PRS transmission (if any) in the time slot. For example, this may be determined at least in part based on the number of "PSSCH symbols" in the time slot, the DMRS pattern indicated in the corresponding SCI, and part or all of the "number of SL PRS symbols" of the SL PRS resource corresponding to the SL PRS resource ID indicated in the SCI.

[0199] In some aspects, the term "time slot" may be replaced with "sideways time slot." For example, when referring to sideways operation, the term "time slot" may refer to a "sideways time slot."

[0200] In some aspects, a method suitable for described described and the Part or all of the time slot may be a time slot not used for S-SSB.

[0201] In some aspects, "sl-StartingSymbolFirst" can be replaced with "startingSymbolFirst" and vice versa.

[0202] In some aspects, "sl-StartingSymbolSecond" may be replaced with "startingSymbolSecond" and vice versa.

[0203] Example 1

[0204] The method executed by the UE according to the first embodiment of the present disclosure is described below with reference to FIG. 1 .

[0205] FIG1 shows a flowchart corresponding to a method executed by a UE according to a first embodiment of the present disclosure.

[0206] As shown in FIG1 , in the first embodiment of the present disclosure, the steps performed by the UE include: step S101 and step S103 .

[0207] Specifically, in step S101, a permission is selected for a side row (e.g., )Select resource pool(s).

[0208] For example, a permission is selected for the side trip Select a resource pool (e.g. ).

[0209] For example, the permission is selected for the side Select one or more resource pools (e.g., including the resource pool ).

[0210] In some aspects, the resource pool selection operation may be performed after the UE selects to create the sideline selected grant. Executed later.

[0211] In some aspects, the side row selection permission The creation of may be triggered by a higher layer of the UE, or may be triggered by signaling (eg, SCI) from other UEs.

[0212] In some aspects, the resource pool selection operation may include being triggered by one or more of the following:

[0213] ●The side selection permission It corresponds to the transmission of one or more MAC PDUs (Protocol Data Units), and there is sidelink data available for transmission in a logical channel.

[0214] • The transmission of one or more MAC CEs (eg, SL-CSI reports) is triggered.

[0215] • The transmission of one or more SL PRSs is triggered.

[0216] Furthermore, in step S103, one or more operations related to resource (re)selection are performed.

[0217] In some aspects, in order to determine whether to perform one or more operations related to resource (re)selection, it is necessary to first perform a transmission resource (transmit resource, or transmission resource, or simply referred to as TX resource) (re)selection (i.e. selection or re-selection) check process.

[0218] In some aspects, if transmission resource (re)selection is triggered in the transmission resource (re)selection checking procedure, the one or more operations related to resource (re)selection are performed.

[0219] In some aspects, if transmission resource (re)selection is not triggered in the transmission resource (re)selection checking procedure, the one or more operations related to resource (re)selection are not performed.

[0220] In some aspects, the transmission resource (re)selection check process may be performed in the resource pool is triggered.

[0221] In some aspects, the transmission resource (re)selection check process may be a process for selecting a permit for the sideline An associated sidelink process is triggered.

[0222] In some aspects, in the transmission resource (re)selection check process, when one or more conditions are met (e.g., in the resource pool When configured or reconfigured by RRC, one or more of the following operations may be performed:

[0223] ● Clear the side row selected permission

[0224] ●Trigger transmission resource (re)selection.

[0225] In some aspects, the one or more operations related to resource (re)selection may include, at least in part, one or more of the following:

[0226] ● Select a "resource reservation interval" (e.g. ). For example, the The selection may be made from a set of allowed resource reservation interval values, where the set may be configured by a higher layer parameter (eg, sl-ResourceReservePeriodList) or may be determined based on one or more higher layer parameters.

[0227] ● Select a "HARQ (Hybrid ARQ, Hybrid Automatic Repeat reQuest) retransmission count" (e.g. ). For example, the The number of HARQ retransmissions allowed may be selected from a set of values, where the set may be configured by a higher layer parameter (e.g., sl-MaxTxTransNumPSSCH) or may be determined based on one or more higher layer parameters. It may include initial transmission, and accordingly, This may correspond to a situation where there is no HARQ retransmission. The initial transmission may not be included, and accordingly, This can correspond to the situation where there is no HARQ retransmission.

[0228] ● Select an "amount of frequency resources" (e.g. sub-channels). For example, It can be selected within the range determined by a minimum number of subchannels configured by the higher-layer parameter sl-MinSubChannelNumPSSCH and a maximum number of subchannels configured by the higher-layer parameter sl-MaxSubchannelNumPSSCH.

[0229] ●Execute a Type 1 resource selection sub-process.

[0230] ●Execute a Type 2 resource selection sub-process.

[0231] In some aspects, the Type 1 Resource Selection sub-flow and / or the Type 2 Resource Selection sub-flow may be used to select a license for the side Select or reselect one or more "transmission resources" (or, without risk of confusion, simply "resources"). In some aspects, the side selects a permission Each resource selected or reselected may correspond to a certain amount of time and frequency resources, for example, a time slot in the time domain and a In some aspects, the side channel is selected to allow Each resource selected or reselected may be used for a transmission opportunity. In some aspects, the side-by-side selection of a grant Each resource that is selected or reselected can be in the resource pool middle.

[0232] In some aspects, the type 1 resource selection sub-process may at least partially include part or all of a type 1 resource selection sub-step a and a type 1 resource selection sub-step b.

[0233] In some aspects, in the type 1 resource selection sub-step a, a "first transmission resource" (e.g., denoted as For example, in a resource collection (e.g. ) that satisfies zero, one or more constraints, selects (e.g., randomly selects) a resource as the Among them, the set Each resource in the resource pool can be middle.

[0234] In some aspects, the resource It may correspond to a resource (eg, a resource used for initial transmission) selected for a MAC PDU (or, a corresponding TB).

[0235] In some aspects, in the type 1 resource selection sub-step b, using the Select one or more periodic resources (e.g., record the corresponding resource set as in,

[0236] ●In some aspects, Can be an integer greater than 1.

[0237] ●In some aspects, Can be an integer greater than or equal to 1.

[0238] ●In some aspects, This may correspond to the case where the type 1 resource selection sub-step b is not performed.

[0239] ●In some aspects, the set Each resource in the collection can be selected from the

[0240] ●In some aspects, the set Each resource in can be used for one transmission opportunity.

[0241] ●In some aspects, the set The time interval between any two temporally adjacent resources can be equal to the

[0242] ●In some aspects, the and the collection The set of elements in (for example, ), the time interval between any two temporally adjacent resources can be equal to the

[0243] In some aspects, the Type 1 resource selection sub-step b may be applicable to (or, applicable to and only applicable to) the side-by-side selected license Corresponding to multiple (for example, Among them, )MAC PDU transmission situation. For example, resource Can correspond to A resource (eg, a resource for initial transmission) selected by the j+1th MAC PDU (or, the corresponding TB) among the j+1th MAC PDUs.

[0244] In some aspects, the side selects the license In the case of one MAC PDU, the type 1 resource selection sub-step b is not performed.

[0245] In some aspects, the side selects the license In the case of a MAC PDU, the Can be equal to 1.

[0246] In some aspects, the side selects the license In the case of a MAC PDU, the set can be an empty set, and accordingly,

[0247] In some aspects, the type 2 resource selection sub-flow is performed when (or, if and only if) a type 2 resource selection condition is satisfied.

[0248] In some aspects, the type 2 resource selection condition may include, at least in part, selecting one or more HARQ retransmissions (e.g., which may correspond to For example, this can correspond to situation).

[0249] In some aspects, the type 2 resource selection sub-process may at least partially include part or all of a type 2 resource selection sub-step a and a type 2 resource selection sub-step b.

[0250] In some aspects, in the type 2 resource selection sub-step a, time and frequency resources are selected for one or more transmission opportunities, for example, transmission opportunities transmission resources, of which It can be an integer greater than or equal to 1. The set of selected transmission resources can be recorded as Among them, the set The order of the elements in may correspond to the order from earliest to latest time. Each element in can be selected from the set In some aspects, the Can be equal to the In some aspects, the Can be equal to the

[0251] In some aspects, in the type 2 resource selection sub-step b, For each i, using the set Resources in Select one or more periodic resources (for example, record them in chronological order as as well as ),in,

[0252] ●In some aspects, the resource as well as Each of the

[0253] ●In some aspects, the resource as well as Each of them can be used for one transmission opportunity.

[0254] ●In some aspects, the resource as well as The time interval between any two temporally adjacent resources can be equal to the

[0255] ●In some aspects, the resource as well as The time interval between any two temporally adjacent resources can be equal to the

[0256] In some respects, This may correspond to the case where the type 2 resource selection sub-step b is not performed.

[0257] In some respects, Can remember

[0258] In some respects, Can remember

[0259] In some aspects, the Type 2 resource selection sub-step b may be applicable to (or, applicable to and only applicable to) the side-by-side selected license Corresponding to multiple (for example, Among them, )MAC PDU transmission situation. For example, gather Can correspond to The set of all resources selected for retransmission by the j+1th MAC PDU (or the corresponding TB) in the MAC PDUs; gather Can correspond to The set consisting of all resources selected by the j+1th MAC PDU (or the corresponding TB) in the j+1th MAC PDU.

[0260] In some aspects, the side selects the license For a MAC PDU, gather Can be an empty set.

[0261] In some aspects, if the resource pool Is a shared SL PRS resource pool, then select the license for the side Each selected resource may be used for one PSSCH transmission and its associated PSCCH transmission, or may be used for one PSSCH transmission, the PSCCH transmission associated with the PSSCH transmission, and the SL PRS transmission associated with the PSCCH transmission.

[0262] In some aspects, if the resource pool No SL PRS resources are configured in the Neither a shared SL PRS resource pool nor a dedicated SL PRS resource pool), then select a license for the side row Each resource selected may be used for one PSSCH transmission and its associated PSCCH transmission.

[0263] In some aspects, in the resource pool When PSFCH is configured, it should be ensured that the selected grant for the side channel A "first selected resource" (e.g. ) and a "second selected resource" (e.g. ) satisfies a "minimum time interval" (e.g., ). For example, the resource and said resources The time interval between the For example, the resources and said resources The time interval between

[0264] In some aspects, the resource and the resources It may be possible to select a permission for the side trip Select any two resources.

[0265] In some aspects, the resource and the resources It may be possible to select a permission for the side trip Any two resources selected that meet a type 1 sidelink resource selection condition, wherein the type 1 sidelink resource selection condition may at least partially include one or more of the following items (for example, the type 1 sidelink resource selection condition may correspond to a combination of one or more of the following items in an "AND" or "OR" manner):

[0266] ●The resources Later than the resource

[0267] ●The resources No earlier than the resource

[0268] ●The resources For initial transmission.

[0269] ●The resources For initial transmission.

[0270] ●The resources Used for retransmission.

[0271] ●The resources Used for retransmission.

[0272] ●The resources Used for initial transmission or retransmission.

[0273] ●The resources Used for initial transmission or retransmission.

[0274] ●The resources and the resources Used for the same MAC PDU (or, corresponding TB).

[0275] ●The resources and the resources In the collection middle.

[0276] ●The resources and the resources In the collection (For any )middle.

[0277] ●The resources and the resources In the collection middle.

[0278] ●The resources and the resources In the collection (For any )middle.

[0279] In some aspects, the May consist, at least in part, of one or more of the following (e.g., It can be expressed as a sum of one or more summation terms, wherein the one or more summation terms may at least partially include one or more of the following:

[0280] ● a "first minimum time interval" (e.g., ).

[0281] ● a "second minimum time interval" (e.g., ).

[0282] ● a "third minimum time interval" (e.g., ).

[0283] For example, For example, For example, For example, for operations without shared spectrum channel access, For example, for operations without shared spectrum channel access, otherwise, For another example, an operation on accessing a shared spectrum channel (or an operation on accessing a shared spectrum channel in FR1) For another example, an operation on accessing a shared spectrum channel (or an operation on accessing a shared spectrum channel in FR1) otherwise,

[0284] In some aspects, the It can be defined as a type 0 reference symbol 0 (for example, ) ends with a type 0 reference symbol 1 (e.g. ) starts.

[0285] In some aspects, the symbol The resource may be The last "PSSCH symbol" in the time slot (or the time slot in which it is located).

[0286] In some aspects, the symbol The symbol may be determined at least in part based on part or all of a "Type 0 reference PSSCH transmission", a "Type 0 reference PSSCH transmission opportunity", a "Type 0 reference SL PRS transmission", and a "Type 0 reference SL PRS transmission opportunity". This can be one of the following:

[0287] • The last symbol of the "Type 0 Reference PSSCH Transmission".

[0288] ●The last symbol of the "Type 0 Reference PSSCH Transmission" or the last symbol of the "Type 0 Reference SL PRS Transmission", whichever is later.

[0289] • The last symbol of the "Type 0 Reference PSSCH Transmission" or the last symbol of the "Type 0 Reference SL PRS Transmission" (if any), whichever is later.

[0290] ●The last "PSSCH symbol" in the time slot where the "Type 0 Reference PSSCH Transmission" is located.

[0291] • The last symbol of the "Type 0 Reference PSSCH Transmission Opportunity".

[0292] ●The last symbol of the "Type 0 Reference PSSCH Transmission Opportunity" or the last symbol of the "Type 0 Reference SL PRS Transmission Opportunity", whichever is later.

[0293] ●The last symbol of the "Type 0 reference PSSCH transmission opportunity" or the last symbol of the "Type 0 reference SL PRS transmission opportunity" (if any), whichever is later.

[0294] ●The last "PSSCH symbol" in the time slot where the "Type 0 reference PSSCH transmission opportunity" is located.

[0295] In some aspects, the Type 0 reference PSSCH transmission may be the resource A PSSCH transmission in .

[0296] In some aspects, the Type 0 reference PSSCH transmission may be the resource A PSSCH transmission in the time slot.

[0297] In some aspects, the type-0 reference PSSCH transmission may be a PSSCH transmission in the type-0 reference PSSCH transmission opportunity.

[0298] In some aspects, the Type 0 reference PSSCH transmission opportunity may be the resource A PSSCH transmission opportunity in .

[0299] In some aspects, the Type 0 reference PSSCH transmission opportunity may be the resource A PSSCH transmission opportunity in the time slot.

[0300] In some aspects, the type-0 reference PSSCH transmission opportunity may be the PSSCH transmission opportunity at which the type-0 reference PSSCH is transmitted.

[0301] In some aspects, the Type 0 Reference SL PRS transmission may be the resource A SL PRS transmission in.

[0302] In some aspects, the Type 0 Reference SL PRS transmission may be the resource One SL PRS transmission in the time slot.

[0303] In some aspects, the type-0 reference SL PRS transmission may be a SL PRS transmission in the type-0 reference SL PRS transmission opportunity.

[0304] In some aspects, the Type 0 reference SL PRS transmission opportunity may be the resource One SL PRS transmission opportunity in.

[0305] In some aspects, the Type 0 reference SL PRS transmission opportunity may be the resource An SL PRS transmission opportunity in the time slot where it is located.

[0306] In some aspects, the type-0 reference SL PRS transmission opportunity may be the SL PRS transmission opportunity at which the type-0 reference SL PRS is transmitted.

[0307] Specifically, for example, the symbol The resource may be The last symbol of a PSSCH transmission (or a PSSCH transmission opportunity). The resource may be The last "PSSCH symbol" in the time slot where a PSSCH transmission (or a PSSCH transmission opportunity) is located. For example, the symbol The resource may be (or the time slot in which it is located). For example, the symbol The resource may be The last symbol of a PSSCH transmission (or a PSSCH transmission opportunity) in the resource (or the time slot in which it is located), or The last symbol of an SL PRS transmission (or an SL PRS transmission opportunity) in the time slot in which it is located (or the time slot in which it is located), whichever is later. The resource may be The last symbol of a PSSCH transmission (or a PSSCH transmission opportunity) in the resource (or the time slot in which it is located), or The last symbol of a SL PRS transmission (or a SL PRS transmission opportunity) (if any) in the resource (or the time slot in which it is located), whichever is later. If the symbol (or the time slot in which it is located) is not used for SL PRS transmission, the symbol The resource may be The last symbol of a PSSCH transmission (or a PSSCH transmission opportunity) in the resource (or the time slot in which it is located). When (or the time slot in which it is located) is used for SL PRS transmission, the symbol The resource may be The last symbol of a PSSCH transmission (or a PSSCH transmission opportunity) in (or the time slot in which it is located) and the resource The later of the last symbol of an SL PRS transmission (or, an SL PRS transmission opportunity) in the time slot in which it is located.

[0308] In some aspects, for operation with shared spectrum channel access and operation without shared spectrum channel access, the symbol The determination method of can be the same or different. For example, for the operation with shared spectrum channel access, the symbol The resource may be The last symbol of a PSSCH transmission (or a PSSCH transmission opportunity). For another example, for an operation without shared spectrum channel access, the symbol The resource may be The last symbol of a PSSCH transmission (or a PSSCH transmission opportunity) in the resource (or the time slot in which it is located), or The last symbol of an SL PRS transmission (or an SL PRS transmission opportunity) in the time slot in which it is located (or the time slot in which it is located), whichever is later. For example, for operation without shared spectrum channel access, the symbol The resource may be The last symbol of a PSSCH transmission (or a PSSCH transmission opportunity) in the resource (or the time slot in which it is located), or The last symbol of an SL PRS transmission (or an SL PRS transmission opportunity), if any, in the time slot in which it is located (or the time slot in which it is located), whichever is later.

[0309] In some aspects, the symbol The symbol may be determined at least in part based on part or all of a "Type 0 Reference PSFCH Reception" and a "Type 0 Reference PSFCH Reception Timing". This can be one of the following:

[0310] • The first symbol of the "Type 0 Reference PSFCH Reception".

[0311] ●The first symbol of the "Type 0 Reference PSFCH Reception Opportunity".

[0312] In some aspects, the Type-0 reference PSFCH reception may be a PSFCH reception in the Type-0 reference PSFCH reception opportunity.

[0313] In some aspects, the type-0 reference PSFCH reception occasion may be a PSFCH reception occasion at which the type-0 reference PSFCH is received.

[0314] In some aspects, the type-0 reference PSFCH reception may be a PSFCH reception corresponding to the type-0 reference PSSCH transmission (or, the type-0 reference PSSCH transmission opportunity). For example, this may be applicable to a situation where one PSSCH transmission (or, one PSSCH transmission opportunity) corresponds to only one PSFCH reception.

[0315] In some aspects, the type-0 reference PSFCH reception may be the last PSFCH reception corresponding to the type-0 reference PSSCH transmission (or the type-0 reference PSSCH transmission opportunity). For example, this may apply to a case where one PSSCH transmission (or one PSSCH transmission opportunity) corresponds to only one PSFCH reception, and / or a case where one PSSCH transmission (or one PSSCH transmission opportunity) corresponds to one or more PSFCH receptions.

[0316] In some aspects, for operations with shared spectrum channel access and operations without shared spectrum channel access, the manner of determining the type-0 reference PSFCH reception may be the same or different. For example, for operations without shared spectrum channel access, the type-0 reference PSFCH reception may be the PSFCH reception corresponding to the type-0 reference PSSCH transmission (or, the type-0 reference PSSCH transmission opportunity). For another example, for operations without shared spectrum channel access, the type-0 reference PSFCH reception may be the PSFCH reception corresponding to the type-0 reference PSSCH transmission (or, the type-0 reference PSSCH transmission opportunity); otherwise, the type-0 reference PSFCH reception may be the last PSFCH reception corresponding to the type-0 reference PSSCH transmission (or, the type-0 reference PSSCH transmission opportunity). For another example, for operations with shared spectrum channel access (or, operations with shared spectrum channel access in FR1), the type-0 reference PSFCH reception may be the last PSFCH reception corresponding to the type-0 reference PSSCH transmission (or, the type-0 reference PSSCH transmission opportunity). For example, for operations with shared spectrum channel access (or operations with shared spectrum channel access in FR1), the type 0 reference PSFCH reception may be the last PSFCH reception corresponding to the type 0 reference PSSCH transmission (or, the type 0 reference PSSCH transmission opportunity); otherwise, the type 0 reference PSFCH reception may be the PSFCH reception corresponding to the type 0 reference PSSCH transmission (or, the type 0 reference PSSCH transmission opportunity).

[0317] In some aspects, the type-0 reference PSFCH reception opportunity may be the PSFCH reception opportunity corresponding to the type-0 reference PSSCH transmission (or, the type-0 reference PSSCH transmission opportunity). For example, this may be applicable when one PSSCH transmission (or, one PSSCH transmission opportunity) corresponds to only one PSFCH reception opportunity.

[0318] In some aspects, the type-0 reference PSFCH reception opportunity may be the last PSFCH reception opportunity corresponding to the type-0 reference PSSCH transmission (or the type-0 reference PSSCH transmission opportunity). For example, this may apply to the case where one PSSCH transmission (or one PSSCH transmission opportunity) corresponds to only one PSFCH reception opportunity, and / or the case where one PSSCH transmission (or one PSSCH transmission opportunity) corresponds to one or more PSFCH reception opportunities.

[0319] In some aspects, the manner of determining the type-0 reference PSFCH reception timing may be the same or different for operations with shared spectrum channel access and operations without shared spectrum channel access. For example, for operations without shared spectrum channel access, the type-0 reference PSFCH reception timing may be the PSFCH reception timing corresponding to the type-0 reference PSSCH transmission (or, the type-0 reference PSSCH transmission timing). For another example, for operations without shared spectrum channel access, the type-0 reference PSFCH reception timing may be the PSFCH reception timing corresponding to the type-0 reference PSSCH transmission (or, the type-0 reference PSSCH transmission timing); otherwise, the type-0 reference PSFCH reception timing may be the last PSFCH reception timing corresponding to the type-0 reference PSSCH transmission (or, the type-0 reference PSSCH transmission timing). For another example, for an operation with shared spectrum channel access (or, an operation with shared spectrum channel access in FR1), the type-0 reference PSFCH reception timing may be the last PSFCH reception timing corresponding to the type-0 reference PSSCH transmission (or, the type-0 reference PSSCH transmission timing). For another example, for an operation with shared spectrum channel access (or, an operation with shared spectrum channel access in FR1), the type-0 reference PSFCH reception timing may be the last PSFCH reception timing corresponding to the type-0 reference PSSCH transmission (or, the type-0 reference PSSCH transmission timing); otherwise, the type-0 reference PSFCH reception timing may be the PSFCH reception timing corresponding to the type-0 reference PSSCH transmission (or, the type-0 reference PSSCH transmission timing).

[0320] In some aspects, the It may at least partially include the time required to receive and process the PSFCH plus the time required to prepare for sidelink retransmissions (e.g., including the time to multiplex the required physical channels together, the switching time from transmission to reception, and part or all of the switching time from reception to transmission).

[0321] In some aspects, the It may be applicable to (or, applicable to and only applicable to) operations with shared spectrum channel access.

[0322] In some aspects, the It may be applicable to (or, applicable to and only applicable to) operations with shared spectrum channel access in FR1.

[0323] In some aspects, the It can be defined as a type 1 reference symbol 0 (for example, ) ends with a type 1 reference symbol 1 (e.g. ) starts.

[0324] In some aspects, the symbol The resource may be The last "PSSCH symbol" in the time slot (or the time slot in which it is located).

[0325] In some aspects, the symbol The symbol may be determined at least in part based on part or all of a "Type 1 reference PSSCH transmission", a "Type 1 reference PSSCH transmission opportunity", a "Type 1 reference SL PRS transmission", and a "Type 1 reference SL PRS transmission opportunity". This can be one of the following:

[0326] • The last symbol of the "Type 1 Reference PSSCH Transmission".

[0327] ●The last symbol of the "Type 1 Reference PSSCH Transmission" or the last symbol of the "Type 1 Reference SL PRS Transmission", whichever is later.

[0328] • The last symbol of the "Type 1 Reference PSSCH Transmission" or the last symbol of the "Type 1 Reference SL PRS Transmission" (if any), whichever is later.

[0329] ●The last "PSSCH symbol" in the time slot where the "Type 1 reference PSSCH transmission" is located.

[0330] ●The last symbol of the "Type 1 Reference PSSCH Transmission Opportunity".

[0331] ●The last symbol of the "Type 1 reference PSSCH transmission opportunity" or the last symbol of the "Type 1 reference SL PRS transmission opportunity", whichever is later.

[0332] ●The last symbol of the "Type 1 reference PSSCH transmission opportunity" or the last symbol of the "Type 1 reference SL PRS transmission opportunity" (if any), whichever is later.

[0333] ●The last "PSSCH symbol" in the time slot where the "Type 1 reference PSSCH transmission opportunity" is located.

[0334] In some aspects, the Type 1 reference PSSCH transmission may be the resource A PSSCH transmission in .

[0335] In some aspects, the Type 1 reference PSSCH transmission may be the resource A PSSCH transmission in the time slot.

[0336] In some aspects, the type-1 reference PSSCH transmission may be a PSSCH transmission in the type-1 reference PSSCH transmission opportunity.

[0337] In some aspects, the Type 1 reference PSSCH transmission opportunity may be the resource A PSSCH transmission opportunity in .

[0338] In some aspects, the Type 1 reference PSSCH transmission opportunity may be the resource A PSSCH transmission opportunity in the time slot.

[0339] In some aspects, the type-1 reference PSSCH transmission opportunity may be the PSSCH transmission opportunity at which the type-1 reference PSSCH is transmitted.

[0340] In some aspects, the Type 1 reference SL PRS transmission may be the resource A SL PRS transmission in.

[0341] In some aspects, the Type 1 reference SL PRS transmission may be the resource One SL PRS transmission in the time slot.

[0342] In some aspects, the type-1 reference SL PRS transmission may be a SL PRS transmission in the type-1 reference SL PRS transmission opportunity.

[0343] In some aspects, the Type 1 reference SL PRS transmission opportunity may be the resource One SL PRS transmission opportunity in.

[0344] In some aspects, the Type 1 reference SL PRS transmission opportunity may be the resource An SL PRS transmission opportunity in the time slot where it is located.

[0345] In some aspects, the type-1 reference SL PRS transmission opportunity may be the SL PRS transmission opportunity at which the type-1 reference SL PRS is transmitted.

[0346] Specifically, for example, the symbol The resource may be The last symbol of a PSSCH transmission (or a PSSCH transmission opportunity). The resource may be The last "PSSCH symbol" in the time slot where a PSSCH transmission (or a PSSCH transmission opportunity) is located. For example, the symbol The resource may be (or the time slot in which it is located). For example, the symbol The resource may be The last symbol of a PSSCH transmission (or a PSSCH transmission opportunity) in the resource (or the time slot in which it is located), or The last symbol of an SL PRS transmission (or an SL PRS transmission opportunity) in the time slot in which it is located (or the time slot in which it is located), whichever is later. The resource may be The last symbol of a PSSCH transmission (or a PSSCH transmission opportunity) in the resource (or the time slot in which it is located), or The last symbol of a SL PRS transmission (or a SL PRS transmission opportunity) (if any) in the resource (or the time slot in which it is located), whichever is later. If the symbol (or the time slot in which it is located) is not used for SL PRS transmission, the symbol The resource may be The last symbol of a PSSCH transmission (or a PSSCH transmission opportunity) in the resource (or the time slot in which it is located). When (or the time slot in which it is located) is used for SL PRS transmission, the symbol The resource may be The last symbol of a PSSCH transmission (or a PSSCH transmission opportunity) in (or the time slot in which it is located) and the resource The later of the last symbol of an SL PRS transmission (or, an SL PRS transmission opportunity) in the time slot in which it is located.

[0347] In some aspects, for operation with shared spectrum channel access and operation without shared spectrum channel access, the symbol The determination method of can be the same or different. For example, for the operation with shared spectrum channel access, the symbol The resource may be The last symbol of a PSSCH transmission (or a PSSCH transmission opportunity). For another example, for an operation without shared spectrum channel access, the symbol The resource may be The last symbol of a PSSCH transmission (or a PSSCH transmission opportunity) in the resource (or the time slot in which it is located), or The last symbol of an SL PRS transmission (or an SL PRS transmission opportunity) in the time slot in which it is located (or the time slot in which it is located), whichever is later. For example, for operation without shared spectrum channel access, the symbol The resource may be The last symbol of a PSSCH transmission (or a PSSCH transmission opportunity) in the resource (or the time slot in which it is located), or The last symbol of an SL PRS transmission (or an SL PRS transmission opportunity), if any, in the time slot in which it is located (or the time slot in which it is located), whichever is later.

[0348] In some aspects, the symbol The symbol may be determined at least in part based on part or all of a "Type 1 Reference PSFCH Reception" and a "Type 1 Reference PSFCH Reception Opportunity". This can be one of the following:

[0349] • The first symbol of the "Type 1 Reference PSFCH Reception".

[0350] ●The first symbol of the "Type 1 Reference PSFCH Reception Opportunity".

[0351] In some aspects, the type-1 reference PSFCH reception may be a PSFCH reception in the type-1 reference PSFCH reception opportunity.

[0352] In some aspects, the type-1 reference PSFCH reception occasion may be a PSFCH reception occasion at which the type-1 reference PSFCH is received.

[0353] In some aspects, the type 1 reference PSFCH reception may be a PSFCH reception corresponding to the type 1 reference PSSCH transmission (or the type 1 reference PSSCH transmission opportunity). For example, this may be applicable to a situation where one PSSCH transmission (or one PSSCH transmission opportunity) corresponds to only one PSFCH reception.

[0354] In some aspects, the type-1 reference PSFCH reception may be the last PSFCH reception corresponding to the type-1 reference PSSCH transmission (or the type-1 reference PSSCH transmission opportunity). For example, this may apply to the case where one PSSCH transmission (or one PSSCH transmission opportunity) corresponds to only one PSFCH reception, and / or the case where one PSSCH transmission (or one PSSCH transmission opportunity) corresponds to one or more PSFCH receptions.

[0355] In some aspects, for operations with shared spectrum channel access and operations without shared spectrum channel access, the manner of determining the type-1 reference PSFCH reception may be the same or different. For example, for operations without shared spectrum channel access, the type-1 reference PSFCH reception may be the PSFCH reception corresponding to the type-1 reference PSSCH transmission (or, the type-1 reference PSSCH transmission opportunity). For another example, for operations without shared spectrum channel access, the type-1 reference PSFCH reception may be the PSFCH reception corresponding to the type-1 reference PSSCH transmission (or, the type-1 reference PSSCH transmission opportunity); otherwise, the type-1 reference PSFCH reception may be the last PSFCH reception corresponding to the type-1 reference PSSCH transmission (or, the type-1 reference PSSCH transmission opportunity). For another example, for operations with shared spectrum channel access (or, operations with shared spectrum channel access in FR1), the type-1 reference PSFCH reception may be the last PSFCH reception corresponding to the type-1 reference PSSCH transmission (or, the type-1 reference PSSCH transmission opportunity). For example, for the operation of accessing a shared spectrum channel (or, the operation of accessing a shared spectrum channel in FR1), the type 1 reference PSFCH reception may be the last PSFCH reception corresponding to the type 1 reference PSSCH transmission (or, the type 1 reference PSSCH transmission timing); otherwise, the type 1 reference PSFCH reception may be the PSFCH reception corresponding to the type 1 reference PSSCH transmission (or, the type 1 reference PSSCH transmission timing).

[0356] In some aspects, the type-1 reference PSFCH reception opportunity may be the PSFCH reception opportunity corresponding to the type-1 reference PSSCH transmission (or the type-1 reference PSSCH transmission opportunity). For example, this may be applicable when one PSSCH transmission (or one PSSCH transmission opportunity) corresponds to only one PSFCH reception opportunity.

[0357] In some aspects, the type-1 reference PSFCH reception opportunity may be the PSFCH reception opportunity corresponding to the type-1 reference PSSCH transmission (or the type-1 reference PSSCH transmission opportunity). For example, this may be applicable to the case where one PSSCH transmission (or one PSSCH transmission opportunity) corresponds to only one PSFCH reception opportunity, and / or the case where one PSSCH transmission (or one PSSCH transmission opportunity) corresponds to one or more PSFCH reception opportunities.

[0358] In some aspects, the manner of determining the type 1 reference PSFCH reception timing may be the same or different for operations with shared spectrum channel access and operations without shared spectrum channel access. For example, for operations without shared spectrum channel access, the type 1 reference PSFCH reception timing may be the PSFCH reception timing corresponding to the type 1 reference PSSCH transmission (or, the type 1 reference PSSCH transmission timing). For another example, for operations without shared spectrum channel access, the type 1 reference PSFCH reception timing may be the PSFCH reception timing corresponding to the type 1 reference PSSCH transmission (or, the type 1 reference PSSCH transmission timing); otherwise, the type 1 reference PSFCH reception timing may be the last PSFCH reception timing corresponding to the type 1 reference PSSCH transmission (or, the type 1 reference PSSCH transmission timing). For another example, for an operation with shared spectrum channel access (or, an operation with shared spectrum channel access in FR1), the type-1 reference PSFCH reception timing may be the last PSFCH reception timing corresponding to the type-1 reference PSSCH transmission (or, the type-1 reference PSSCH transmission timing). For another example, for an operation with shared spectrum channel access (or, an operation with shared spectrum channel access in FR1), the type-1 reference PSFCH reception timing may be the last PSFCH reception timing corresponding to the type-1 reference PSSCH transmission (or, the type-1 reference PSSCH transmission timing); otherwise, the type-1 reference PSFCH reception timing may be the PSFCH reception timing corresponding to the type-1 reference PSSCH transmission (or, the type-1 reference PSSCH transmission timing).

[0359] In some aspects, the first embodiment of the present disclosure may be applicable to (or applicable to and only applicable to) the resource pool It is not the case of a dedicated SL PRS resource pool.

[0360] In some aspects, embodiment 1 of the present disclosure may be applicable to (or, applicable to and only applicable to) sidelink resource allocation mode 2 and / or sidelink resource allocation scheme 2.

[0361] In some aspects, in embodiment 1 of the present disclosure, for operations without shared spectrum channel access, one PSSCH transmission (or, one PSSCH transmission opportunity) may correspond to one PSFCH reception (or, one PSFCH reception opportunity).

[0362] In some aspects, in embodiment 1 of the present disclosure, for operations with shared spectrum channel access, one PSSCH transmission (or, one PSSCH transmission opportunity) may correspond to one or more PSFCH receptions (or, one or more PSFCH reception opportunities).

[0363] In some aspects, in embodiment 1 of the present disclosure, for operations with shared spectrum channel access in FR1, one PSSCH transmission (or, one PSSCH transmission opportunity) may correspond to one or more PSFCH receptions (or, one or more PSFCH reception opportunities).

[0364] In some aspects, the first embodiment of the present disclosure may be applicable to (or, applicable to and only applicable to) operations without shared spectrum channel access and / or operations with shared spectrum channel access.

[0365] In some aspects, the first embodiment of the present disclosure may be applicable to (or applicable to and only applicable to) licensed spectrum and / or unlicensed spectrum.

[0366] In some aspects, embodiment 1 of the present disclosure may be performed by a higher layer (eg, a MAC layer) of the UE.

[0367] Thus, according to embodiment one, the present disclosure provides a method, wherein, when performing resource selection or reselection for a side selected license, the minimum time interval between any two resources selected for the side selected license is determined based on the last PSSCH symbol in the time slot where the earlier resource of the two resources is located, so that the determined minimum time interval is consistent in the shared SL PRS resource pool and the traditional resource pool without SL PRS configured, thereby reducing the UE processing complexity in the shared SL PRS resource pool; in addition, in operations with shared spectrum channel access, the minimum time interval is determined based on the last PSFCH reception timing corresponding to a PSSCH transmission, so that the minimum time interval is independent of the PSFCH reception actually performed by the UE, thereby reducing the UE processing complexity in operations with shared spectrum channel access.

[0368] Modifications

[0369] 2 is used to illustrate a user equipment as a modified example that can execute the method executed by the user equipment described in detail above in the present disclosure.

[0370] FIG2 is a block diagram showing a user equipment involved in the present disclosure.

[0371] As shown in Figure 2, the user equipment UE20 includes a processor 201 and a memory 202. The processor 201 may include, for example, a microprocessor, a microcontroller, an embedded processor, etc. The memory 202 may include, for example, a volatile memory (such as a random access memory (RAM), a hard disk drive (HDD), a non-volatile memory (such as a flash memory), or other memory. The memory 202 stores program instructions. When executed by the processor 201, the instructions may execute the above-mentioned method performed by the user equipment as described in detail in this disclosure.

[0372] The methods and devices involved in the present disclosure have been described above in conjunction with preferred embodiments. Those skilled in the art will appreciate that the methods shown above are merely exemplary and that the various embodiments described above can be combined with one another without conflict. The methods of the present disclosure are not limited to the steps and sequence shown above. The network nodes and user equipment shown above may include more modules, such as modules that can be developed or developed in the future and can be used for base stations, AMFs (Access and Mobility Management Functions), UPFs (User Plane Functions), MMEs (Mobility Management Entities), S-GWs (Serving Gateways), or UEs. The various identifiers shown above are merely exemplary and not restrictive, and the present disclosure is not limited to the specific information elements used as examples of these identifiers. Based on the teachings of the illustrated embodiments, those skilled in the art may make many changes and modifications.

[0373] Those skilled in the art should understand that any set is a subset of itself; the empty set is a subset of any set; part or all of a mathematical expression, mathematical equation, or mathematical inequality can be simplified, transformed, or rewritten to a certain extent, such as merging constant terms, exchanging two additive terms, exchanging two multiplication terms, changing the sign of a term and moving it from the left side of the equation or inequality to the right side, changing the sign of a term and moving it from the right side of the equation or inequality to the left side, etc.; the mathematical expressions, mathematical equations, or mathematical inequalities before and after simplification, transformation, or rewriting can be considered equivalent.

[0374] It should be understood that the above embodiments of the present disclosure can be implemented through software, hardware, or a combination of software and hardware. For example, the various components within the base station and user equipment in the above embodiments can be implemented through a variety of devices, including but not limited to: analog circuit devices, digital circuit devices, digital signal processing (DSP) circuits, programmable processors, application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), programmable logic devices (CPLDs), and the like.

[0375] In this disclosure, "base station" may refer to a mobile communication data and / or control switching center with a certain transmission power and coverage area, and may include functions such as resource allocation and scheduling, data reception and transmission, etc. "User equipment" may refer to a user's mobile terminal, such as a mobile phone or laptop, that can wirelessly communicate with a base station or micro base station.

[0376] In addition, the embodiments of the present disclosure disclosed herein can be implemented on a computer program product. More specifically, the computer program product is a product as follows: having a computer-readable medium, on which computer program logic is encoded, and when executed on a computing device, the computer program logic provides relevant operations to implement the above-mentioned technical solutions of the present disclosure. When executed on at least one processor of a computing system, the computer program logic causes the processor to perform the operations (methods) described in the embodiments of the present disclosure. This arrangement of the present disclosure is typically provided as software, code and / or other data structures arranged or encoded on a computer-readable medium such as an optical medium (e.g., CD-ROM), a floppy disk or a hard disk, or other media such as firmware or microcode on one or more ROM or RAM or PROM chips, or downloadable software images, shared databases, etc. in one or more modules. Software or firmware or this configuration can be installed on a computing device so that one or more processors in the computing device execute the technical solutions described in the embodiments of the present disclosure.

[0377] In addition, each functional module or each feature of the base station equipment and terminal equipment used in each of the above embodiments can be implemented or executed by a circuit, and the circuit is generally one or more integrated circuits. The circuit designed to perform the various functions described in this specification may include a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC) or a general-purpose integrated circuit, a field programmable gate array (FPGA) or other programmable logic device, a discrete gate or transistor logic, or a discrete hardware component, or any combination of the above devices. The general-purpose processor may be a microprocessor, or the processor may be an existing processor, a controller, a microcontroller or a state machine. The general-purpose processor or each circuit may be configured by a digital circuit, or may be configured by a logic circuit. In addition, when, due to advances in semiconductor technology, an advanced technology that can replace current integrated circuits emerges, the present disclosure may also use the integrated circuit obtained using the advanced technology.

[0378] Although the present disclosure has been described above with reference to the preferred embodiments thereof, it will be understood by those skilled in the art that various modifications, substitutions, and changes may be made to the present disclosure without departing from the spirit and scope of the present disclosure. Therefore, the present disclosure should not be limited by the above-described embodiments, but by the appended claims and their equivalents.

Claims

1. A method performed by a user equipment UE, characterized in that include: performing a transmission resource selection or reselection check for a sideways process in a resource pool, wherein the sideways process is associated with a selected sideways grant for transmitting one or more media access control (MAC) protocol data units (PDUs); and In case that the transmission resource selection or reselection check triggers transmission resource selection or reselection, time and frequency resources for one or more transmission opportunities are selected, wherein, in case a physical sidelink feedback channel PSFCH is configured for the resource pool, a minimum time interval is ensured between any two selected resources, wherein, for sidelink operation with shared spectrum channel access, the minimum time interval includes the time interval between the end of the last symbol of the PSSCH transmission in the first resource and the beginning of the first symbol of the corresponding last PSFCH reception opportunity, wherein the PSFCH reception opportunity is determined according to the higher layer configuration of the resource pool.

2. A user equipment, comprising: processor; as well as Memory, which stores instructions, Wherein, the instructions, when executed by the processor, perform the method according to claim 1.

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