Method executed by user equipment, and user equipment

Abstract

Provided in the present disclosure is a method executed by a user equipment. The method comprises: initializing an SL PRS resource subset SA, P to a set formed by SL PRS resources, which belong to a dedicated positioning resource pool (a), are within a resource selection window and have corresponding SL PRS resource identifiers in an SL PRS resource identifier set (b) provided by a higher layer; excluding zero, one or more SL PRS resources from the set SA, P, wherein for each slot (c) in a sensing window without monitoring, each resource reservation period configured in the resource pool (a), each SL PRS resource identifier in the set (b), and an assumed SCI format 1-B which is received in the slot (c) and indicates the resource reservation period and the SL PRS resource identifier, an SL PRS resource, which overlaps an SL PRS resource indicated by SCI, is excluded from the set SA, P; and reporting the set SA, P to the higher layer.

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. An example of a wireless communication system is a system 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, or 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), the radio link from the UE to the base station can be called an uplink (UL), and the radio link between UEs can be called a sidelink (SL). The interface for wireless transmission and / or reception between the base station and the UE can be called a Uu interface (such as the NR-Uu interface based on NR; such as the 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).

[0003] One or more positioning and / or ranging technologies may be supported in a wireless communication system. 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 or estimated based on measurements of downlink signals, and / or uplink signals, and / or sidelink signals. In order to support communications on licensed and / or unlicensed spectrum, and / or positioning of UEs on licensed and / or unlicensed spectrum, a series of issues need to be addressed, such as channel access mechanisms, structures of physical layer channels and / or signals, physical layer control information and / or signaling processes (e.g., synchronization processes, or feedback and / or determination mechanisms), higher layer control information and / or signaling processes, resource allocation and / or management, and coexistence between different systems.

[0004] Prior art literature

[0005] Non-patent literature

[0006] Non-Patent Document 1: RP-170379, Revision of SI: Study on New Radio Access Technology, 3GPP TSG RAN Meeting #75

[0007] Non-Patent Document 2: RP-191971, Revised WID: New Radio Access Technology, 3GPP TSG RAN Meeting #85

[0008] Non-Patent Document 3: RP-190224, Revised SID: Study on NR V2X, 3GPP TSG RAN Meeting #83

[0009] Non-Patent Document 4: RP-200129, Revised WID on 5G V2X with NR sidelink, 3GPP TSG RAN Meeting #87-e

[0010] Non-Patent Document 5: RP-202846, Revised WID on NR Sidelink Enhancement, 3GPP TSG RAN Meeting #90-e

[0011] Non-Patent Document 6: RP-222806, Revised WID: NR sidelink evolution, 3GPP TSG RAN Meeting #98-e

[0012] Non-Patent Document 7: RP-182155, Revised SID: Study on NR positioning support, 3GPP TSG RAN Meeting #81

[0013] Non-Patent Document 8: RP-200218, Revised WID: NR positioning support, 3GPP TSG RAN Meeting #87-e

[0014] Non-Patent Document 9: RP-210903, Revised WID: NR Positioning Enhancements, 3GPP TSG RAN Meeting #91-e

[0015] Non-Patent Document 10: RP-222616, Revised SID on Study on expanded and improved NR positioning, 3GPP TSG RAN Meeting #97-e

[0016] Non-Patent Document 11: RP-223549, New WID on Expanded and Improved NR Positioning, 3GPP TSG RAN Meeting #98-e

[0017] 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, in determining a dedicated positioning resource pool In the SL PRS resource identifier comes from the set When the SL PRS resource subset is set, for a time slot that is not monitored For the resource pool Each resource reservation period (pre) configured in Each SL PRS resource identifier in the time slot The combination of the corresponding SL PRS resources in the time slot determines a hypothetical The SCI received in the UE is selected and all periodic and non-periodic resources indicated by the SCI are excluded. This greatly reduces the probability of conflict with SL PRS resources reserved by other UEs in the resources finally selected for SL PRS transmission, thereby improving the performance of SL PRS resource selection.

[0019] According to the present disclosure, a method performed by a user equipment is proposed, characterized by comprising: A，P Initialize as a dedicated positioning resource pool The corresponding SL PRS resource identifier in a resource selection window is in a set of SL PRS resource identifiers provided by a higher layer. The set of SL PRS resources in the set S A，P Exclude zero, one or more SL PRS resources, where for each time slot that is not monitored in a sensing window, Each in the resource pool The resource reservation period configured in SL PRS resource identifier in the time slot and a hypothetical The SCI format 1-B received in the resource reservation period and the SL PRS resource identifier is selected from the set S A，P Excluding SL PRS resources that overlap with the SL PRS resources indicated by the SCI, and reporting the set S to a higher layer A，P .

[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 for determining a dedicated positioning resource pool. In the SL PRS resource identifier comes from the set When the SL PRS resource subset is set, for a time slot that is not monitored For the resource pool Each resource reservation period (pre) configured in Each SL PRS resource identifier in the time slot The combination of the corresponding SL PRS resources in the time slot determines a hypothetical The SCI received in the UE is selected and all periodic and non-periodic resources indicated by the SCI are excluded. This greatly reduces the probability of conflict with SL PRS resources reserved by other UEs in the resources finally selected for SL PRS transmission, thereby improving the performance of SL PRS resource selection. 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 user equipment according to the first embodiment of the present disclosure.

[0024] FIG2 shows a block diagram of a user equipment 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 multiple implementations of the present disclosure using the 5G (or NR, or 5G NR) 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 implementations, 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 (Long Term Evolution), 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] ● “Node” may refer to a UE, or a network node (such as a base station), or a communication node in another form.

[0031] ●“Base station” may refer to a 4G base station, such as an eNB (E-UTRAN Node B, where E-UTRAN stands for Evolved Universal Terrestrial Radio Access Network); or a 5G base station, such as a gNB (a node that provides NR user plane and control plane protocol termination to the UE and is connected to the 5G core network through the NG interface), or an ng-eNB (a node that provides E-UTRA user plane and control plane protocol termination to the UE and is connected to the 5G core network through the NG interface, where E-UTRA stands for Evolved Universal Terrestrial Radio Access); or a base station of other forms.

[0032] ●“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 specific protocol stack (e.g., access stratum protocol stack). For example, if the reference protocol layer or reference protocol sublayer is the physical layer (or referred to as “Layer 1”), the “higher layer” may refer to the MAC (Medium Access Control) layer, and / or the RLC (Radio Link Control) layer, and / or the PDCP (Packet Data Convergence Protocol) layer, and / or the PC5-RRC (Radio Resource Control) layer, and / or the PC5-S layer, and / or the RRC layer, and / or other protocol layers or protocol sublayers. Unless otherwise specified, the reference protocol layer or reference protocol sublayer is the physical layer. Where there is no ambiguity, the “higher layer” may also be referred to as the “upper layer”.

[0033] ● "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 specific protocol stack. For example, if the reference protocol layer or reference protocol sublayer is the RRC layer, the "lower layer" may refer to the MAC layer and / or 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. Unless otherwise specified, the reference protocol layer or reference protocol sublayer is the MAC layer. Where there is no ambiguity, the "lower layer" may also be referred to as the "lower layer."

[0034] ● “Signaling” can refer to signaling at the physical layer or signaling at higher layers.

[0035] ● “Configure” may refer to a protocol layer (eg, RRC layer) entity providing configuration information to another protocol layer (eg, physical layer) entity in a communication node (eg, UE).

[0036] ●“Configuration” may refer to a protocol layer (e.g., RRC layer) entity of a communication node (e.g., a base station) providing configuration information to a peer protocol layer entity of another communication node (e.g., a UE) (e.g., transmitting RRC signaling from a base station to a UE, which includes the configuration information; or transmitting PC5-RRC signaling from one UE to another UE, which includes the configuration information).

[0037] ● “Pre-configure” may refer to pre-setting corresponding configuration information in a specific storage location in a communication node (eg, UE), or pre-setting corresponding configuration information in a specific storage location accessible to the UE.

[0038] ● "(Pre)configuration" can mean configuration or pre-configuration.

[0039] • “Parameter” may refer to a physical layer parameter, or a higher layer parameter, e.g. a parameter (pre-)configured at the RRC layer.

[0040] ● “Number” may refer to “total number”. For example, “the number of subchannels in a resource pool” may refer to the total number of subchannels in the resource pool.

[0041] ● The elements in a set (or a sequence) can be indexed 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.

[0042] ●A time series (e.g., t0, t1, ..., t N-1 ) or a corresponding set (e.g. {t0, t1, ..., t N-1 The elements in t0 may appear in chronological order, for example, the time corresponding to t0 is earlier than (or no later than) the time corresponding to t1, the time corresponding to t1 is earlier than (or no later than) the time corresponding to t2, and so on.

[0043] Δf may represent the subcarrier spacing (SCS) of a carrier (e.g., a DL carrier; another example, a UL carrier; another example, a SL carrier) or a BWP (Bandwidth part; e.g., a DL BWP; another example, a UL BWP; another example, a SL BWP). For example, Δf = 15 kHz; another example, Δf = 30 kHz; another example, Δf = 60 kHz; another example, Δf = 120 kHz.

[0044] μ can represent the subcarrier spacing configuration (SCS configuration) corresponding to an SCS. For example, μ = 0 can correspond to Δf = 15 kHz; for example, μ = 1 can correspond to Δf = 30 kHz; for example, μ = 2 can correspond to Δf = 60 kHz; for example, μ = 3 can correspond to Δf = 120 kHz.

[0045] ●“Symbol” may refer to an OFDM (Orthogonal Frequency Division Multiplexing) symbol.

[0046] A resource can correspond to one or more of the following:

[0047] ■ One or more parameters in the time domain, such as the starting symbol of the resource, the starting time slot of the resource, the number of symbols occupied by the resource, or the number of time slots occupied by the resource.

[0048] ■ One or more parameters in the frequency domain. For example, the starting subchannel of the resource; another example, the starting RB (resource block) of the resource; another example, the starting subcarrier of the resource; another example, the number of subchannels occupied by the resource; another example, the number of RBs occupied by the resource; another example, the number of subcarriers occupied by the resource.

[0049] ■ One or more parameters in the code domain, for example, a cyclic shift value or a corresponding cyclic shift index corresponding to the resource; or a cyclic shift pair value or a corresponding cyclic shift pair index corresponding to the resource.

[0050] ■ One or more parameters in the spatial domain. For example, the layer corresponding to the resource, where a "layer" may refer to a MIMO (Multiple Input Multiple Output) layer.

[0051] A "layer" may refer to one of one or more layers to which a TB (Transport Block) is mapped in spatial multiplexing. The mapping may also be considered as mapping the codeword corresponding to the TB to the one or more layers.

[0052] ●“RB” can refer to PRB (physical resource block), or VRB (virtual resource block), or CRB (common resource block), or IRB (Interlaced Resource Block); accordingly, “RB index” can refer to PRB index, or VRB index, or CRB index, or IRB index.

[0053] ● “Number” and “index” are interchangeable. For example, the number of an RB can also be called the index of the RB. For another example, “numbering an RB to 0” can also be expressed as “indexing an RB to 0”.

[0054] ● An element in a sequence (or array, or list, or set, etc.) can be represented by its index. For example, an RB with index 0 can be called "RB 0".

[0055] ●The index of an object (e.g., a subcarrier, a time slot, a cyclic shift, etc.) (e.g., the index of the object in a sequence, an array, a list, or a set) can be used as the "identifier" (ID) of the object.

[0056] ● In signaling, the object can be indicated by an object index.

[0057] 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.

[0058] ●Δ(x1, x2) can represent the 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). For example, if x1 and x2 are two time slots in a resource pool, 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).

[0059] • The offset between two subcarriers may refer to the offset between the center frequencies of the two subcarriers.

[0060] Modulo Operation can be defined as r≡a mod N, where

[0061] ■r is the remainder.

[0062] ■a=N×q+r,where q can be called the integer quotient of a and N.

[0063] ■0≤r<|N|.

[0064] ● Rounding operation can be expressed as b=round(a), where b can be defined as the integer closest to a. If there are two integers closest to a, b can be defined as the larger of the two integers, or as the smaller of the two integers.

[0065] ●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 (for example, a frame period with a duration of 1024 frames); the physical time slots in the physical time slot set may be indexed in chronological order as 0, 1, ...

[0066] ●In the time domain, a "frame" (or "radio frame") can refer to a system frame (the corresponding frame number can be called a system frame number, SFN) or a direct frame (the corresponding frame number can be called a direct frame number, DFN). A frame period (for example, denoted as T FNP ) may correspond to a predefined or (pre)configured parameter, or may be determined based on one or more predefined or (pre)configured parameters, for example, T FNP = 1024 frames. Accordingly, the 1024 frames in the frame period can be indexed as 0, 1, ..., 1023 in chronological order. The frame period based on the system frame can be called an "SFN cycle" (SFN cycle), and the frame period based on the direct frame can be called a "DFN cycle" (DFN cycle). 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 time slot index in a frame period can be recorded as in Can be equal to (For example, 1024·(10·2 μ )).

[0067] The rounding operation can be expressed as b=round(a), where b can be defined as the integer closest to a. If there are two integers closest to a, b can be defined as the larger of the two integers, or as the smaller of the two integers.

[0068] ● A bit string (e.g., 'b0b1...b L-1 '), the leftmost bit (ie, b0) can correspond to the most significant bit, and accordingly, the rightmost bit (ie, b L-1 ) may correspond to the least significant bit.

[0069] ● A bit string of size (or "length") L bits (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.

[0070] ●“Sidewalk” can refer to NR sidewalk or LTE sidewalk.

[0071] ●“Carrier” can refer to a sidecarrier, an uplink carrier, or a downlink carrier.

[0072] ● "Bandwidth segment" can refer to a sidelink bandwidth segment, an upstream bandwidth segment, or a downstream bandwidth segment.

[0073] ●“Resource pool” may refer to the sideline resource pool.

[0074] ●A "sidelink resource" may refer to a resource that can be used for sidelink transmission, for example, a time-frequency resource, wherein the time-frequency resource may correspond to one or more symbols (or, one or more time slots) in the time domain and may correspond to one or more subchannels (or, one or more resource blocks; or, one or more subcarriers) in the frequency domain.

[0075] A "sidelink timeslot" may refer to a timeslot configured with sidelink resources (e.g., a timeslot in a resource pool). The "sidelink resources" may or may not include resources for specific purposes, where the "resources for specific purposes" may be resources used for synchronization procedures, such as resources used to transmit S-SS / PSBCH (S-SS / Physical Sidelink Broadcast CHannel, or Sidelink-Synchronization Signal / Physical Sidelink Broadcast CHannel) blocks.

[0076] ●A "logical time slot" may refer to a time slot in a time slot set belonging to a resource pool, wherein the time slot set may be all time slots belonging to the resource pool in a continuous period of time (for example, a frame period with a duration of 1024 frames); the logical time slots in the time slot set may be indexed in chronological order as 0, 1, ...

[0077] ●A "logical time slot" may refer to a time slot that can be configured as a set of time slots belonging to a resource pool.

[0078] ●A "sideways time slot" may refer to a time slot in a set of time slots belonging to a resource pool.

[0079] A "sideways timeslot" may refer to a timeslot that may be configured as a set of timeslots belonging to a resource pool.

[0080] ●A "sidelink transmission" may correspond to the transmission of a physical channel used for sidelink, for example, the physical channel may be PSCCH (Physical Sidelink Control Channel), or PSSCH (Physical Sidelink Shared Channel), or PSFCH (Physical Sidelink Feedback Channel), or PSBCH (Physical Sidelink Broadcast Channel), or other physical channels.

[0081] ●A "sidelink transmission" may correspond to the transmission of a physical signal for sidelink, for example, the physical signal may be S-PSS (Sidelink primary synchronization signal), or S-SSS (Sidelink secondary synchronization signal), or DMRS (or "DM-RS", Demodulation reference signals), or CSI RS (or "CSI-RS", Channel-state information reference signal), or PT RS (or "PT-RS", Phase-tracking reference signals), or other physical signals.

[0082] ●A "sideline transmission" may correspond to the transmission of more than one physical channel or physical signal multiplexed (eg, time division multiplexing; or frequency division multiplexing; or multiplexed in other ways) in the same sideline resource (eg, the same time slot). For example, an "S-SS / PSBCH block transmission" (or called an "S-SSB transmission") can correspond to the transmission of an S-PSS, an S-SSS, and a PSBCH multiplexed in the same time slot, and the corresponding resource multiplexing pattern can be recorded as "S-PSS / S-SSS / PSBCH"; a "PSCCH / PSSCH transmission" (or called a "PSSCH / PSCCH transmission") can correspond to the transmission of a PSCCH and an associated PSSCH multiplexed in the same time slot, and the corresponding resource multiplexing pattern can be recorded as "PSCCH / PSSCH" (or called "PSSCH / PSCCH"); a "PSCCH / SL PRS transmission" (or called a "SL PRS / PSCCH transmission") can correspond to the transmission of a PSCCH and an associated SL PRS multiplexed in the same time slot, and the corresponding resource multiplexing pattern can be recorded as "PSCCH / SL PRS"; a "PSCCH / PSSCH / SL "PRS transmission" (or called a "PSSCH / PSCCH / SL PRS transmission") can correspond to the transmission of a PSCCH, a PSSCH associated with the PSCCH, and a SL PRS associated with the PSCCH multiplexed in the same time slot. The corresponding resource multiplexing mode can be recorded as "PSCCH / PSSCH / SL PRS" (or called "PSSCH / PSCCH / SLPRS").

[0083] ● Sidelink Control Information (SCI) carried in a sidelink transmission (e.g., PSCCH; or PSSCH; or PSCCH / PSSCH) may correspond to “one SCI”, where the SCI may refer to the first-stage SCI (1 st -stage SCI), or second-stage SCI (2 nd -stage SCI), or the first-stage SCI and its associated second-stage SCI.

[0084] ● An SCI with a corresponding SCI format X carried in a sidelink transmission (eg, PSCCH; or PSSCH; or PSCCH / PSSCH) may be referred to as "an SCI format X." For example, a UE may receive an SCI format 1-A in a time slot.

[0085] ●A sidelink grant can be a sidelink dynamic grant, a sidelink configured grant, or any other form of sidelink grant.

[0086] ●A "sidelink configured grant" can be a "type 1 sidelink configured grant", or a "type 2 sidelink configured grant", or any other form of sidelink configured grant.

[0087] ●The “release” operation on a side travel configuration permission may also be referred to as the “deactivation” operation on the side travel configuration permission.

[0088] ●“Dynamic sidelink grant” and “dynamic sidelink grant” are interchangeable.

[0089] ●“Sidelink configuration grant” and “configured sidelink grant” are interchangeable.

[0090] ●“Type 1 sidelink configuration grant” and “sidelink configured grant type 1” are interchangeable.

[0091] ● “Type 2 sidelink configuration grant” and “sidelink configured grant type 2” are interchangeable.

[0092] ●A "sidelink identity" (sidelink ID) can refer to a layer 1 sidelink identifier or a layer 2 sidelink identifier.

[0093] A "destination ID" may refer to a sidelink identifier. For example, a destination ID indicated in a multicast transmission may be used to identify a group corresponding to the multicast transmission; another example, a destination ID indicated in a broadcast transmission may be used to identify a service corresponding to the broadcast transmission; another example, a destination ID indicated in a unicast transmission may be used to identify the intended receiving UE of the unicast transmission (e.g., the destination ID may be a source identifier of the intended receiving UE).

[0094] A source ID may be a sidelink identifier. For example, a source ID indicated in a unicast (or multicast, or broadcast) transmission may be used to identify the UE that performs the transmission.

[0095] A priority level can be associated with a priority value. For example, one priority level can be associated with a priority value of 0, while another priority level can be associated with a priority value of 1.

[0096] A priority level may correspond to a priority value in one or more protocol layers (or protocol sublayers), wherein the corresponding priority values ​​in different protocol layers (or protocol sublayers) may be equal or different. For example, one priority level may correspond to a priority value of 0 at the physical layer and a priority value of 1 at a higher layer; another priority level may correspond to a priority value of 1 at the physical layer and a priority value of 2 at a higher layer.

[0097] The relationship between the priority order and the corresponding priority value may be such that as the priority value increases, the priority (or "priority order") decreases. For example, if the priority values ​​corresponding to the priorities associated with a first side transmission and a second side transmission are 0 and 1, respectively, the priority of the first side transmission is higher than the priority of the second side transmission.

[0098] The relationship between the priority order and the corresponding priority value may be such that as the priority value increases, the priority (or "priority order") increases. For example, if the priority values ​​corresponding to the priorities associated with the first side transmission and the second side transmission are 0 and 1, respectively, the priority of the first side transmission is lower than the priority of the second side transmission.

[0099] ● "Positioning" may refer to one or more functions for obtaining information including the location of a UE, for example, determining the location information of a UE; or determining the distance between two UEs. "Positioning" may include "ranging".

[0100] ●A “positioning resource pool” can refer to a “side positioning resource pool”.

[0101] ●A “target UE” may refer to a UE that is being positioned and / or ranging (or referred to as a “device that is being positioned and / or ranging”).

[0102] ● An “anchor UE” may refer to a UE that provides support for positioning and / or ranging of a target UE (or referred to as a “device that provides support for positioning and / or ranging of a target UE”).

[0103] A "server UE" refers to a UE that provides some or all of the functions for services based on sidewalk positioning and / or ranging, including positioning method determination, positioning assistance information distribution, and position information calculation. A server UE can interact with other UEs through the PC5 interface. A server UE can be a target UE, an anchor UE, or another UE.

[0104] A positioning-related reference signal transmitted and / or received on a sidelink may be referred to as an SL PRS (or "SL-PRS", Sidelink Positioning Reference Signal).

[0105] The resources corresponding to an SL PRS transmission (for example, time-frequency resources) can be called an SL PRS resource (SL PRS resource, or called "SL PRS transmission resource", SL PRS transmission resource, or called "SL PRS transmission occasion resource", SL PRS transmission occasion resource). An SL PRS resource can correspond to a continuous frequency domain resource (for example, one or more continuous RBs; for example, one or more continuous subchannels) and a continuous time domain resource (for example, one or more continuous symbols in a time slot), wherein the SL PRS resource can occupy the same or different subcarrier subsets in the one or more continuous RBs (or, the one or more continuous subchannels) in different symbols. For example, an SL PRS resource may correspond to 4 consecutive symbols in the time domain and 50 consecutive RBs in the frequency domain, wherein the SL PRS resource may occupy the subcarrier sets {0, 4, 8}, {2, 6, 10}, {1, 5, 9}, and {3, 7, 11} in each of the 50 RBs in the first, second, third and fourth symbols of the 4 symbols, respectively; such a RE (resource element) pattern that occupies 1 subcarrier in every 4 consecutive subcarriers may be called a comb-like pattern with a "comb size" of 4, for example, the comb-like pattern may be called a Comb-4 pattern. In addition, one or more other SL PRS resources can be multiplexed in the four symbols and the 50 RBs. For example, the second SL PRS resource can occupy the subcarrier sets {1, 5, 9}, {3, 7, 11}, {2, 6, 10}, and {0, 4, 8} in each of the 50 RBs in the first, second, third and fourth symbols of the four symbols, respectively; for another example, the third SL PRS resource can occupy the subcarrier sets {2, 6, 10}, {0, 4, 8}, {3, 7, 11}, and {1, 5, 9} in each of the 50 RBs in the first, second, third and fourth symbols of the four symbols, respectively; the fourth SL PRS resource can occupy the subcarrier sets {3, 7, 11}, {1, 5, 9}, {0, 4, 8}, and {2, 6, 10} in each of the 50 RBs in the first, second, third and fourth symbols of the four symbols, respectively.

[0106] A SL PRS resource can belong to a resource pool. A resource pool can be (pre-)configured with one or more SL PRS resources. A resource pool (pre-)configured with SL PRS resources can be called a "positioning resource pool".

[0107] A positioning resource pool may be a dedicated positioning resource pool (also called a dedicated SL PRS resource pool, or a dedicated resource pool). A dedicated positioning resource pool may have one or more of the following characteristics:

[0108] The resource pool may be used for one or more operations on the SL PRS, such as part or all of transmission, reception, and measurement.

[0109] The resource pool may be used for one or more operations on the PSCCH (and, optionally, a reference signal associated with the PSCCH, such as a DMRS), such as part or all of transmission, reception, and measurement.

[0110] The resource pool cannot be used for one or more operations on the PSSCH (and, optionally, a reference signal associated with the PSSCH, such as DMRS), such as part or all of transmission, reception, and measurement.

[0111] ● The resource pool cannot be used for any operation on the PSSCH (and, optionally, a reference signal associated with the PSSCH, such as a DMRS), such as transmission, reception, or measurement.

[0112] A positioning resource pool may be a shared positioning resource pool (also called a shared SL PRS resource pool, or a shared resource pool). A shared positioning resource pool may have one or more of the following characteristics:

[0113] The resource pool may be used for one or more operations on the SL PRS, such as part or all of transmission, reception, and measurement.

[0114] The resource pool may be used for one or more operations on the PSCCH (and, optionally, a reference signal associated with the PSCCH, such as a DMRS), such as part or all of transmission, reception, and measurement.

[0115] The resource pool may be used for one or more operations on the PSSCH (and, optionally, a reference signal associated with the PSSCH, such as DMRS), such as part or all of transmission, reception, and measurement.

[0116] The resource pool may be used for one or more operations on the PSFCH (eg, when PSFCH resources are (pre-)configured in the resource pool), such as part or all of transmission, reception, and measurement.

[0117] A resource pool without (pre-)configured SL PRS resources may be referred to as a “non-located resource pool.” For example, a non-located resource pool may be a resource pool that is neither a dedicated located resource pool nor a shared located resource pool.

[0118] An SL PRS resource may be associated with one or more parameters, such as one or more of the following:

[0119] ● Time domain resource allocation corresponding to the SL PRS resource. For example, the time domain resource allocation may include the time domain position of the SL PRS resource (for example, represented by a starting symbol index within a time slot; for example, represented by a starting sideline symbol index within a time slot); for example, the time domain resource allocation may include the number of time domain resources occupied by the SL PRS resource (for example, represented by the number of symbols).

[0120] ● Frequency domain resource allocation corresponding to the SL PRS resource. For example, the frequency domain resource allocation may include the frequency domain position of the SL PRS resource (for example, expressed as a starting RB index; for example, expressed as a starting subchannel index); for example, the frequency domain resource allocation may include the number of frequency domain resources occupied by the SL PRS resource (for example, expressed as the number of RBs; for example, expressed as the number of subchannels). In some aspects of the present disclosure, the frequency domain resource allocation (for example, when it is used as a feature to characterize the SL PRS resource; for example, when it is used as a parameter to identify the SL PRS resource) may be applicable to a shared positioning resource pool (for example, only applicable to a shared positioning resource pool). In some aspects of the present disclosure, for a dedicated positioning resource pool, the frequency domain resource allocation may be the same as the frequency domain resources of the resource pool. In some aspects of the present disclosure, for a shared positioning resource pool, the frequency domain resource allocation may be the same as the frequency domain resource allocation of the PSSCH in the same time slot (for example, the PSSCH transmitted by the same UE and associated with the same PSCCH). ● An SL PRS resource identifier (or SL PRS resource ID). In some aspects of the present disclosure, in a time slot of a dedicated positioning resource pool, an SL PRS resource may be uniquely identified by an SL PRS resource identifier. In some aspects of the present disclosure, in a time slot of a shared positioning resource pool, an SL PRS resource may be uniquely identified by a combination of an SL PRS resource identifier and an SL PRS frequency domain resource allocation. In some aspects of the present disclosure, an SL PRS resource identifier may be an integer greater than or equal to 0, or may be an integer greater than or equal to 1.

[0121] One or more parameters corresponding to a corresponding comb pattern, for example, one or more of the following:

[0122] ■ "Comb size" (e.g. ). For a comb size of The comb pattern, in one symbol, the SL PRS resource can be Specifically, for example, if Then in one symbol, the first SL PRS resource multiplexed in the comb pattern can occupy subcarriers 0, 4 and 8 in an RB, the second SL PRS resource multiplexed in the comb pattern can occupy subcarriers 1, 5 and 9 in an RB, the third SL PRS resource multiplexed in the comb pattern can occupy subcarriers 2, 6 and 10 in an RB, and the fourth SL PRS resource multiplexed in the comb pattern can occupy subcarriers 3, 7 and 11 in an RB.

[0123] ■ "Comb offset" (e.g. ). The “comb offset” may correspond to the index of the lowest subcarrier of the SL PRS resource in the first symbol it occupies (for example, represented by the index of the subcarrier in the RB). Specifically, for example, if the SL PRS resource occupies subcarriers 0, 4, and 8 in an RB in the first symbol it occupies, the comb offset corresponding to the SL PRS resource is In some aspects of the present disclosure, the "comb offsets" corresponding to different SL PRS resources multiplexed in the same comb pattern may be different. Accordingly, the "comb offset" can be used to uniquely identify an SL PRS resource multiplexed therein in a comb pattern. The "comb offset" can also be called "RE offset".

[0124] In some aspects of the present disclosure, if one SL PRS resource (e.g., denoted as SL PRS resource A) and another SL PRS resource (e.g., denoted as SL PRS resource B) satisfy a type 1 SL PRS resource comparison condition, then the SL PRS resource A and the SL PRS resource B may be considered to be the same SL PRS resource, wherein the type 1 SL PRS resource comparison condition may include one or more of the following (e.g., in any combination of "AND" or "OR"):

[0125] The SL PRS resource A and the SL PRS resource B correspond to the same time domain resource allocation. For example, the SL PRS resource A and the SL PRS resource B are in the same time slot in the same resource pool. For another example, the SL PRS resource A and the SL PRS resource B correspond to the same starting symbol in the same time slot in the same resource pool. For another example, the SL PRS resource A and the SL PRS resource B correspond to the same number of symbols.

[0126] The SL PRS resource A and the SL PRS resource B correspond to the same frequency domain resource allocation. For example, the SL PRS resource A and the SL PRS resource B correspond to the same starting RB (or the same starting subchannel) in the same resource pool. For another example, the SL PRS resource A and the SL PRS resource B correspond to the same number of RBs (or the same number of subchannels).

[0127] ●The SL PRS resource A and the SL PRS resource B have the same SL PRS resource identifier.

[0128] ●The comb sizes of the SL PRS resource A and the SL PRS resource B are the same.

[0129] ● The comb offsets of the SL PRS resource A and the SL PRS resource B are the same.

[0130] In some aspects of the present disclosure, a SL PRS transmission (or a corresponding SL PRS resource) in a time slot may be associated with a PSCCH transmission (or a corresponding PSCCH resource) in the same time slot, wherein the PSCCH transmission may carry part or all of the information in the SCI associated with the SL PRS transmission (or the corresponding SL PRS resource), wherein:

[0131] The SCI may indicate information related to the SL PRS transmission (or the corresponding SL PRS resource) (e.g., frequency domain resource allocation; or time domain resource allocation; or an SL PRS resource identifier). In addition, in some aspects of the present disclosure, the SCI may additionally indicate (or be "associated with"; or "reserved"; or "used for determining") information of SL PRS resources in one or more time slots later than the time slot (e.g., frequency domain resource allocation; or time domain resource allocation; or an SL PRS resource identifier).

[0132] ●For the dedicated positioning resource pool, the SCI may correspond to a first-stage SCI format (for example, SCI format 1-B); the SCI may be carried in the PSCCH; the combination of the SL PRS transmission and the PSCCH transmission may be referred to as a PSCCH / SL PRS (or, SL PRS / PSCCH) transmission.

[0133] ●For the shared positioning resource pool, the SCI may correspond to a first-stage SCI format (for example, SCI format 1-A) and a corresponding second-stage SCI format (for example, SCI format 2-D), wherein the first-stage SCI format may be carried in the PSCCH, and the second-stage SCI may be carried in resources allocated to a PSSCH associated with the PSCCH (for example, referred to as "PSSCH resources"); the combination of the SL PRS transmission, the PSCCH transmission, and the PSSCH transmission may be referred to as a PSCCH / PSSCH / SL PRS (or, PSSCH / PSCCH / SL PRS; or, PSCCH / PSSCH; or, PSSCH / PSCCH) transmission.

[0134] In some aspects of the present disclosure, a UE performs only one SL PRS transmission in a time slot, ie, the UE does not transmit on more than one SL PRS resource in the time slot.

[0135] In some aspects of the present disclosure, a UE performs only one of "sideline transmission" (e.g., SL PRS transmission) and "sideline reception" (e.g., SL PRS reception; for example, SL PRS measurement) in a time slot. For example, if the UE performs SL PRS transmission (and its associated PSCCH transmission) in a time slot, the UE cannot monitor (or "detect") SL PRS (and its associated PSCCH) transmitted by other UEs in the time slot.

[0136] In some aspects of the present disclosure, the SL PRS sequence r(m) corresponding to an SL PRS transmission may be a sequence based on a pseudo-random sequence c(n), for example

[0137] Among them, c(n) can be defined as

[0138] c(n)=(x1(n+N c )+x2(n+N c ))mod 2

[0139] in,

[0140] x1(n+31)=(x1(n+3)+x1(n))mod 2

[0141] x2(n+31)=(x2(n+3)+x2(n+2)+x2(n+1)+x2(n))mod 2

[0142] in,

[0143] N cCan be a predefined integer, for example, N c =1600.

[0144] ●x1(n) can be initialized to x1(0)=0, x1(1)=x1(2)=…=x1(30)=0.

[0145] ●x2(n) can be initialized by an initial value c init Completed, where c init It can be recorded as

[0146] The c init Can be defined as

[0147] in,

[0148] ● It can indicate the number of symbols in each time slot.

[0149] ● It may represent the time slot number in a frame (for example, the time slot number of the time slot to which the SL PRS sequence is mapped in the corresponding frame).

[0150] ● Can represent a "SL PRS sequence identifier" (SL PRS sequence ID). In some aspects of the present disclosure, the It may be provided by a higher layer (e.g., a higher layer of the UE that performs the SL PRS transmission). In some aspects of the present disclosure, if the higher layer does not provide the Then It can be determined according to predefined rules, for example, It may be determined at least in part based on a decimal representation of the CRC of the SCI carried (or referred to as "mapped") by the PSCCH transmission associated with the SL PRS transmission.

[0151] ●l may represent the symbol number in a time slot (for example, the symbol number in a corresponding time slot to which the SL PRS sequence is mapped).

[0152] The SL PRS sequence can be mapped to the RE corresponding to the subcarrier number k and the symbol number l (for example, denoted as (k, l)) as follows: p，μ , where p may represent the antenna port and μ may represent the subcarrier spacing configuration):

[0153] in,

[0154] ●m=0,1,….

[0155] ●

[0156] ●The reference point of k (eg, the subcarrier corresponding to k=0) may be subcarrier 0 of CRB 0.

[0157] ●

[0158] The RE(k, l) p，μ In the frequency domain resources occupied by the corresponding SL PRS resources (eg, one or more RBs; or one or more subchannels).

[0159] β SL-PRS Can represent an amplitude scaling factor.

[0160] ● It can represent the comb size corresponding to the SL PRS resource. May be provided by higher layers.

[0161] ● It can represent the RE offset (or "comb offset") corresponding to the SL PRS resource. The value can be a set An element in .

[0162] ●L SL-PRS It can represent the number of symbols occupied by the SL PRS resource. SL-PRS May be provided by a higher layer. In some aspects of the present disclosure, the available (or "effective") L SL-PRS and Combinations of (e.g. ) may be related to the type of resource pool where the SL PRS resource is located.

[0163] ● It can indicate the starting symbol of SL PRS resource. The determination method may be related to the type of resource pool where the SL PRS resource is located. For example, in some aspects of the present disclosure, for a dedicated positioning resource pool, It can be provided by a higher layer; for example, in some aspects of the present disclosure, for a shared positioning resource pool, the symbol set occupied by the SL PRS resource Can be mapped to the last L in the corresponding time slot SL-PRSconsecutive symbols that can be used for SL PRS, where the conditions that a "symbol that can be used for SL PRS" should meet may include: the symbol is not a symbol used for PSCCH, the symbol is not a symbol used for PSSCH DMRS, and so on.

[0164] ● k' may represent a frequency offset. k' may be based at least in part on l and Accordingly, an SL PRS resource may correspond to different subcarrier sets in different symbols it occupies; in addition, in the same symbol, different subcarrier sets may be defined for comb patterns of different comb sizes.

[0165] ■If Then k′=0.

[0166] ■If Then k′=2.

[0167] ■If Then k′=1.

[0168] ■If Then k′=3.

[0169] ■……

[0170] The allocation of sidetrack resources may include one or more of the following:

[0171] Sidelink resource allocation based on network scheduling (e.g., a UE determines the resources it uses for sidelink transmission based on the base station's scheduling). This may be referred to as "sidelink resource allocation mode 1" or "sidelink resource allocation scheme 1."

[0172] Sidelink resource allocation based on UE autonomous resource selection (e.g., a UE autonomously determines its resources for sidelink transmission). This may be referred to as "sidelink resource allocation mode 2" or "sidelink resource allocation scheme 2."

[0173] Example 1

[0174] The method executed by the UE according to the first embodiment of the present disclosure is described below with reference to FIG. 1 .

[0175] Embodiment 1 of the present disclosure may correspond to a resource subset determination process, or may be part of the resource subset determination process. The resource subset determination process may be used for SL PRS resource selection, for example, SL PRS resource selection performed in a dedicated positioning resource pool in sidelink resource allocation mode 2.

[0176] FIG1 shows a flowchart corresponding to a method executed by the UE according to the first embodiment of the present disclosure.

[0177] As shown in FIG1 , in the first embodiment of the present disclosure, the steps performed by the UE include: step S101 and step S103 .

[0178] Specifically, in step S101, a resource subset (e.g., S A，P ).

[0179] For example, the resource subset S is determined according to a request (or "indication") triggered by a higher layer (such as a MAC layer) at time slot n. A，P , wherein the resource subset S A，P Each element in can correspond to one of the following:

[0180] ●A SL PRS resource.

[0181] ● A resource containing a SL PRS resource (for example, the element may correspond to a SL PRS resource and its associated PSCCH resource). In the first embodiment of the present disclosure, for convenience, in this case, when describing the resource subset S A，P When referring to a resource in a , only the SL PRS resource in the resource is mentioned.

[0182] Higher layers can select from the resource subset S A，P Select resources for sidelink transmission (e.g., SL PRS transmission; another example, PSCCH / SL PRS transmission). For example, each selected resource can be used for one SL PRS transmission; another example, each selected resource can be used for one PSCCH / SL PRS transmission; another example, each selected resource can be used for one SL PRS transmission, and the PSCCH resource associated with the resource can be used for one PSCCH transmission.

[0183] To trigger step S101 (or to trigger the resource subset determination process), a higher layer may provide one or more parameters, for example, including one or more of the following:

[0184] ●A resource pool, for example, The resource pool It can be a dedicated positioning resource pool.

[0185] ●A set of SL PRS resource identifiers, for example in, is the set In some aspects of the present disclosure, Can be an integer greater than or equal to 1. In some aspects of the present disclosure, Can be an integer greater than or equal to 0, for example, Can correspond to the set is the case of an empty set.

[0186] ●A priority value, such as prio TX The prio TX Can be a Layer 1 priority value.

[0187] ● A resource reservation period (or resource reservation interval), for example, P rsvp_TX The P rsvp_TX It can be expressed in milliseconds, or in the number of physical time slots, or in the number of logical time slots. rsvp_TX The corresponding number of logical time slots can be recorded as P' rsvp_TX .

[0188] A remaining positioning delay budget, denoted as described It can be expressed in milliseconds, or in the number of physical time slots, or in the number of logical time slots.

[0189] The resource subset S A，P Each resource in the resource pool can be A SL PRS resource in .

[0190] The resource pool A set of time slots (for example, a set of time slots in a frame period belonging to the resource pool) The set of all time slots of in is the set The number of elements in .

[0191] The collection It can be in the resource pool The set of all SL PRS resource identifiers used in ). In some aspects of the present disclosure, the set Can be a (pre)configured collection.

[0192] In some aspects of the present disclosure, if the higher layer does not provide the set Then the set can be Set equal to the set In some aspects of the present disclosure, if the set provided by the higher layer is an empty set, then the set Set equal to the set

[0193] In some aspects of the present disclosure, if the higher layer does not provide the P rsvp_TX , then the P rsvp_TX Set to 0.

[0194] In some aspects of the present disclosure, if the higher layer does not provide the P rsvp_TX , then the P′ can be rsvp_TX Set to 0.

[0195] right In the resource pool Time slots in The SL PRS resource identifier is The SL PRS resource can be recorded as Among them, the time slot It may be a time slot within the first time interval.

[0196] The first time interval may be defined as [n+T1, n+T2], where

[0197] ● T1 may correspond to a predefined or (pre)configured parameter, or a value determined by the UE itself that meets certain conditions.

[0198] ●T1 can represent a time slot offset.

[0199] ●T1 can meet in, May correspond to a predefined or (pre)configured parameter; It may be determined at least in part based on the subcarrier spacing configuration μ of the corresponding SL BWP.

[0200] ● T2 may correspond to a predefined or (pre)configured parameter, or a value determined by the UE itself that meets certain conditions.

[0201] ●T2 can represent a time slot offset.

[0202] ● T2 can be based at least in part on T 2min Determine, where T 2min Can correspond to a predefined or (pre)configured parameter; T 2min can be based at least in part on the prio TX OK. For example, if Then T2 can be a value determined by the UE itself that satisfies For example, if but

[0203] The first time interval may be referred to as a "resource selection window" (or "selection window").

[0204] The SL PRS Resources It may be referred to as a type 1 candidate resource (or, "type 1 candidate SL PRS resource", or, "type 1 candidate single-slot resource", or, "type 1 candidate single-slot SL PRS resource").

[0205] gather Can be a collection A subset of is in the resource pool Time slot The set consists of all SL PRS resources in the It can be recorded as in, is the set The number of elements in .

[0206] In some aspects of the present disclosure, the time slot The collection It can be the set The set of SL PRS resource identifiers corresponding to all SL PRS resources in

[0207] combine.

[0208] In some aspects of the present disclosure, the set It can be independent of y, that is, in the resource pool In different time slots, the set same.

[0209] In some aspects of the present disclosure, the set It can be independent of y, that is, in the resource pool In different time slots, the set same.

[0210] In some aspects of the present disclosure, the set The index of each element in can be called a type 1 SL PRS resource identifier index.

[0211] In some aspects of the present disclosure, the set The index of each element in can be called a type 2 SL PRS resource identifier index.

[0212] In some aspects of the present disclosure, the order of Type 2 SL PRS resource identifier indices from smallest to largest may be the same as one or more of the following:

[0213] ●The collection The SL PRS resource identifiers are in ascending order.

[0214] ●The collection The order in which the (pre-)configuration information of the SL PRS resources appears in the corresponding (pre-)configuration parameters (e.g., NR-SL-PRS-Resource-List).

[0215] ●The collection The order in which the (pre-)configuration information of the SL PRS resource identifiers corresponding to the SL PRS resources in the NR-SL-PRS-Resource-ID-List appears in the corresponding (pre-)configuration parameters (e.g., NR-SL-PRS-Resource-ID-List).

[0216] In some aspects of the present disclosure, the set The index of each element in can be called a type 1 SL PRS resource index.

[0217] In some aspects of the present disclosure, the set The index of each element in can be called a type 2 SL PRS resource index.

[0218] In some aspects of the present disclosure, the order of Type 2 SL PRS resource indices from smallest to largest may be the same as one or more of the following:

[0219] ●The collection The SL PRS resource identifiers corresponding to the SL PRS resources in the table are in ascending order.

[0220] ●The collection The order in which the (pre-)configuration information of the SL PRS resources appears in the corresponding (pre-)configuration parameters (e.g., NR-SL-PRS-Resource-List).

[0221] ●The collection The order in which the (pre-)configuration information of the SL PRS resource identifiers corresponding to the SL PRS resources in the NR-SL-PRS-Resource-ID-List appears in the corresponding (pre-)configuration parameters (e.g., NR-SL-PRS-Resource-ID-List).

[0222] In some aspects of the present disclosure, a Type 1 SL PRS resource index may be referred to as a Type 3 SL PRS resource identifier index.

[0223] In some aspects of the present disclosure, a Type 2 SL PRS resource index may be referred to as a Type 4 SL PRS resource identifier index.

[0224] In some aspects of the present disclosure, a Type 1 SL PRS resource identifier index may be referred to as a Type 3 SL PRS resource index.

[0225] In some aspects of the present disclosure, a Type 2 SL PRS resource identifier index may be referred to as a Type 4 SL PRS resource index.

[0226] In the resource pool Can be (pre)configured resource reservation period (or resource reservation interval), where Can be an integer greater than or equal to 0, or, It can be an integer greater than or equal to 1; a resource reservation period can be expressed in milliseconds, or in the number of physical time slots, or in the number of logical time slots.

[0227] described The set of resource reservation periods can be recorded as The collection It may correspond to a (pre)configured parameter (e.g., reservationPeriodAllowed-Dedicated-SL-PRS-RP). The order of the elements in may correspond to the order in which the corresponding (pre)configuration information appears in the parameter reservationPeriodAllowed-Dedicated-SL-PRS-RP.

[0228] In the resource pool A time slot of in, The SCI carried by a PSCCH transmission in ) may indicate (or, "associated with"; or, "used to determine") SL PRS resources, for example, are recorded in chronological order as as well as in,

[0229] ● The corresponding SCI format may be SCI format 1-B.

[0230] ● Can be an integer greater than or equal to 1.

[0231] ● Can be less than or equal to Integer, where May correspond to a predefined or (pre)configured parameter (e.g., sl-MaxNumPerReserve); Can be an integer greater than or equal to 1, for example, For example,

[0232] ● as well as can be respectively referred to as The first SL PRS resource indicated, the second SL PRS resource, ..., and the SL PRS resources.

[0233] ● as well as The time slots (for example, as well as ) can be different, for example, Accordingly, Can represent the Indicates the number of time slots.

[0234] Yes Can be a collection An element in .

[0235] Time slots It can be the time slot Right now

[0236] Time slots as well as It can be said One or more fields in the A "time resource assignment" field in the time resource allocation field indicates that the time slot can be indicated in the form of TRIV (time resource indicator value, time RIV) as well as Respectively relative to time slot The offset, that is as well as ).

[0237] ● It can be indicated by the TRIV.

[0238] ● as well as Each corresponding SL PRS resource index in may be a type 1 SL PRS resource index, or a type 2 SL PRS resource index, or a type 3 SL PRS resource index, or a type 4 SL PRS resource index.

[0239] ● The corresponding SL PRS resource index may be determined at least in part according to the index of the subchannel where the PSCCH transmission is located. For example, the SL PRS resource index may be equal to the index of the subchannel where the PSCCH transmission is located.

[0240] ● as well as Each corresponding SL PRS resource identifier index in may be a type 1 SL PRS resource identifier index, or a type 2 SL PRS resource identifier index, or a type 3 SL PRS resource identifier index, or a type 4 SL PRS resource identifier index.

[0241] ● The corresponding SL PRS resource identifier index may be determined at least in part according to the index of the subchannel where the PSCCH transmission is located. For example, the SL PRS resource identifier index may be equal to the index of the subchannel where the PSCCH transmission is located.

[0242] ● The corresponding SL PRS resource identifier may be determined at least in part based on the index of the subchannel where the PSCCH transmission is located. For example, the SL PRS resource identifier may be equal to the index of the subchannel where the PSCCH transmission is located.

[0243] ● as well as The SL PRS resource index (or SL PRS resource identifier index; or SL PRS resource identifier) ​​corresponding to each of the two SL PRS resources can be represented by the One or more fields in the A "Resource ID indication" field (or called "resource indication" field) indicates.

[0244] ● In some aspects of the present disclosure, if Do not use the The last of SL PRS resources SL PRS resources.

[0245] ● The "resource reservation period" field in the _resource_reservation_period field can be used to indicate a resource reservation period (e.g., ), wherein said It can be the set In some aspects of the present disclosure, if the "resource reservation period" field does not exist, then

[0246] ● The "Priority" field in the CAN bus can be used to indicate a priority value (e.g. ).

[0247] In some aspects of the present disclosure, the Indicates that the number of SL PRS resources can be greater than

[0248] In some aspects of the present disclosure, Each of some or all of k2, the The resource pool may be indicated Time slots in More than one SL PRS resource in The resource pool may be indicated Time slots in All SL PRS resources in, for example, , or by carrying the The PSCCH transmission is implicitly indicated by a predefined or (pre) configured subchannel. The resource pool may be indicated Time slots in as well as All SL PRS resources in, for example, , or by carrying the The PSCCH transmission is implicitly indicated by a predefined or (pre)configured subchannel.

[0249] The step S101 may include N S101 Sub-steps, for example, are recorded in chronological order as sub-steps Substeps Substeps Among them, N S101 Can be an integer greater than or equal to 1.

[0250] In some aspects of the present disclosure, in sub-step (in It is a satisfying Integer, for example ), a candidate resource set (e.g., ). The collection The number of elements in can be written as

[0251] The collection It can be a set of all type 1 candidate resources.

[0252] In executing the sub-steps Afterwards, execute the following sub-steps Before the subsequent sub-step, The value can be recorded as M total，0 .

[0253] In some aspects of the present disclosure, in sub-step (in It is a satisfying Integer, for example ), you can select from the set Exclude (or "remove") zero or one or more type 1 candidate resources.

[0254] In executing the sub-steps Afterwards, execute the following sub-steps Before the subsequent sub-step, The value can be recorded as M total，1 .

[0255] In some aspects of the present disclosure, in sub-step (in It is a satisfying Integer, for example ), a second time interval can be determined, for example, in,

[0256] ●T0 may correspond to a predefined or (pre)configured parameter (eg, sl-SensingWindow).

[0257] ●T0 can represent a time slot offset.

[0258] ● May correspond to a predefined or (pre)configured parameter.

[0259] ● Can represent a time slot offset.

[0260] ● It may be determined at least in part based on the subcarrier spacing configuration μ of the corresponding SL BWP.

[0261] The second time interval may be referred to as a "sensing window". The time slots may include zero or one or more "monitored-slots" and zero or one or more "not-monitored-slots", where a "monitored-slot" may be a time slot in which SCI detection (or "monitoring") is performed, and a "not-monitored-slot" may be a time slot in which SCI cannot be detected due to performing other operations (e.g., performing transmission; specifically, for example, performing SL PRS transmission; for example, performing PSCCH / SL PRS transmission).

[0262] For each monitored time slot, the UE may perform one or more sensing operations, including, for example, one or more of the following:

[0263] • Detecting and / or receiving SCI in the time slot (eg, SCI whose SCI format is SCI format 1-B).

[0264] ● Perform RSRP (Reference Signal Received Power) measurement for each received SCI (for example, perform RSRP measurement on the DMRS resource element in the PSCCH carrying the SCI, and accordingly, the RSRP measurement can be called "PSCCH-RSRP measurement").

[0265] In some aspects of the present disclosure, in sub-step (in It is a satisfying Integer, for example ), one or more RSRP thresholds may be determined. For example, for a priority value (eg, a corresponding received priority value) p i and another priority value (eg, a priority value corresponding to the transmission) p j , RSRP threshold Th(p i , p j ) may be a method based at least in part on the p i and the p j A certain predefined or (pre)configured value, for example, an index p in a predefined or (pre)configured RSRP threshold set i +(p j -1)*8 corresponding elements.

[0266] In some aspects of the present disclosure, in sub-step (in It is a satisfying Integer, for example ), the set S A，P Initialize to the set

[0267] In some aspects of the present disclosure, in sub-step (in It is a satisfying Integer, for example ), zero or one or more resource exclusion operations may be performed, wherein in each resource exclusion operation, a resource is selected from the set S A，P Exclude zero or one or more type 1 candidate resources from the set S. A，P A type 1 candidate resource in If the type 1 resource exclusion condition is met, then the resource from the set S A，P Excluded from the For example, if If the type 2 resource exclusion condition is met, then the resource is selected from the set S A，P Excluded from the For example, if If the type 3 resource exclusion condition is met, then the resource is selected from the set S A，P Excluded from the

[0268] Regarding the The type 1 resource exclusion condition may include one or more of the following (for example, any combination in an "and" or "or" manner):

[0269] Time slots It is a "time slot that is not monitored".

[0270] ●For the collection Any resource reservation period in in ), and SL PRS resource identifier set Any SL PRS resource identifier in and a hypothetical (hypothetical) in the time slot Received in the control information that meets the conditions of type 1 The Type 1 resource overlap condition is met, wherein the Type 1 control information condition may include one or more of the following (for example, any combination in an "AND" or "OR" manner):

[0271] ■ The resource reservation period indicated by the "Resource Reservation Period" field in Equal to the Right now

[0272] ■ The Resource Reservation Period field in

[0273] ■ The number of SL PRS resources indicated in Equal to a predefined or (pre)configured value. For example, For example, For example,

[0274] ■ The number of time slots indicated in is equal to a predefined or (pre)configured value (eg, 1; or 2; or 3).

[0275] ■ The number of time slots indicated in is equal to 1, and the indicated time slot is the time slot

[0276] ■ The first SL PRS resource indicated in is the time slot The SL PRS resource identifier is the SL PRS resources.

[0277] ■ The SL PRS resources indicated in include the time slot The SL PRS resource identifier is the SL PRS resources.

[0278] Regarding the The type 2 resource exclusion condition may include one or more of the following (for example, any combination in an "and" or "or" manner):

[0279] Time slots It is a "time slot that is not monitored".

[0280] ●For the collection Any resource reservation period in in ), and the SL PRS resource collection Any SL PRS resource in and a hypothetical time slot SCI received in the The type 1 resource overlap condition is met, wherein the type 2 control information condition may include one or more of the following (for example, any combination in an "and" or "or" manner):

[0281] ■ The resource reservation period indicated by the "Resource Reservation Period" field in Equal to the Right now

[0282] ■ The Resource Reservation Period field in

[0283] ■ The number of SL PRS resources indicated in Equal to a predefined or (pre)configured value. For example, For example, For example,

[0284] ■ The number of time slots indicated in is equal to a predefined or (pre)configured value (eg, 1; or 2; or 3).

[0285] ■ The number of time slots indicated in is equal to 1, and the indicated time slot is the time slot

[0286] ■ The first SL PRS resource indicated in is the SL PRS resource

[0287] ■ The SL PRS resources indicated in include the SL PRS resources

[0288] Regarding the The type 3 resource exclusion condition may include one or more of the following (for example, any combination in an "and" or "or" manner):

[0289] Time slots It is a "time slot that is not monitored".

[0290] ●For the collection Any resource reservation period in in ), and a hypothetical time slot SCI received in the The type 1 resource overlap condition is met, wherein the type 3 control information condition may include one or more of the following (for example, any combination in an "and" or "or" manner):

[0291] ■ The resource reservation period indicated by the "Resource Reservation Period" field in Equal to the Right now

[0292] ■ The Resource Reservation Period field in

[0293] ■ The number of time slots indicated in is equal to a predefined or (pre)configured value (eg, 1; or 2; or 3).

[0294] ■ The number of time slots indicated in is equal to 1, and the indicated time slot is the time slot

[0295] ■ The SL PRS resource indicated in is the time slot All SL PRS resources in.

[0296] ■ The SL PRS resources indicated in include the time slot All SL PRS resources in.

[0297] ■ The SL PRS resource indicated in is as well as

[0298] ■ The SL PRS resources indicated in include as well as

[0299] ■ Indicated in the time slot The SL PRS resources in as well as

[0300] ■ Indicated in the time slot SL PRS resources include as well as

[0301] ■ The SL PRS resource indicated in is the set All SL PRS resources in.

[0302] ■ The SL PRS resources indicated in include the set

[0303] All SL PRS resources in.

[0304] ■ Indicated in the time slot The SL PRS resource is the collection All SL PRS resources in.

[0305] ■ Indicated in the time slot The SL PRS resources include the collection All SL PRS resources in.

[0306] ■ The SL PRS resource indicated in is the time slot In the collection All SL PRS resource identifiers in correspond to the SL PRS resources respectively.

[0307] ■ The SL PRS resources indicated in include the time slot In the collection All SL PRS resource identifiers in correspond to the SL PRS resources respectively.

[0308] ■ Indicated in the time slot The SL PRS resource is the time slot In the collection All SL PRS resource identifiers in correspond to the SL PRS resources respectively.

[0309] ■ Indicated in the time slot The SL PRS resources include the time slot In the collection All SL PRS resource identifiers in correspond to the SL PRS resources respectively.

[0310] The type 1 resource overlap condition may include one or more of the following (for example, any combination in an "and" or "or" manner):

[0311] ● The first reference SL PRS resource set overlaps with the second reference SL PRS resource set. For example, at least one SL PRS resource in the first reference SL PRS resource set and one SL PRS resource in the second reference SL PRS resource set are the same SL PRS resource (for example, the two SL PRS resources are in the same resource pool). In the same time slot in the resource pool, and corresponding to the same SL PRS resource identifier; For example, the two SL PRS resources are in the resource pool In the same time slot, and corresponding to the same frequency domain resource allocation, and corresponding to the same SL PRS resource identifier).

[0312] ● The first reference SL PRS time slot set overlaps with the second reference SL PRS time slot set. For example, at least one time slot in the first reference SL PRS time slot set and one time slot in the second reference SL PRS time slot set are both in the resource pool in the same time slot.

[0313] The first reference SL PRS time slot set may be a set consisting of time slots where each SL PRS resource in the first reference SL PRS resource set is located. The second reference SL PRS time slot set may be a set consisting of time slots where each SL PRS resource in the second reference SL PRS resource set is located.

[0314] In the resource pool Time slots in An SCI received (eg, actually received; eg, assumed to be received) in The first reference SL PRS resource set may include SL PRS resources respectively determined according to one or more of the following items:

[0315] ● (One or more) SL PRS resources indicated in.

[0316] For q=1, 2, ..., Q, assuming that in time slot Received in, and (One or more) SL PRS resources indicated in the same SCI.

[0317] ■ This (or these) SL PRS resources may be applicable to (or, applicable to and only applicable to) the The case where the "resource reservation period" field exists in the.

[0318] ■In some aspects of the present disclosure, Can be equal to the The resource reservation period indicated by the "Resource Reservation Period" field in

[0319] ■In some aspects of the present disclosure, Can be equal to the The resource reservation period indicated by the "Resource Reservation Period" field in The corresponding number of logical time slots.

[0320] ■In some aspects of the present disclosure, Q can be based at least in part on n0, m, and T scal Part or all of the determination, for example, if and but Otherwise Q = 1, where

[0321] If the time slot n belongs to the resource pool The time slot set Time slot can be defined as the time slot n, otherwise the time slot It can be defined as the time after the time slot n that belongs to the set The first time slot.

[0322] ◆T scal It can be the number of milliseconds corresponding to T2.

[0323] For the set S A，P A type 1 candidate resource in And satisfy j∈{0, 1, ..., C resel +1} (e.g., for j=0, 1, ..., C resel -1; for example, for j = 1, 2, ..., C resel ), the second reference SL PRS resource set may include type 1 candidate resources Among them, C resel can be based at least in part on Determine (for example, ),in, May correspond to a parameter provided by a higher layer. In some aspects of the present disclosure, if the higher layer does not provide the Then the C resel Can be set to a predefined value (e.g., C resel =1).

[0324] In some aspects of the present disclosure, in sub-step (in It is a satisfying Integer, for example ), the resource subset S may be selected based at least in part on the resource subset S A，P The number of elements in (e.g. ) performs one or more operations, for example, if the Less than X0·M total，ref , then the set S A，P Initialize (or reinitialize) the set In some aspects of the present disclosure, the It can also be called the resource subset S A，P The number of elements "remaining" in (after excluding zero or one or more elements).

[0325] In some aspects of the present disclosure, in sub-step (in It is a satisfying Integer, for example ), zero or one or more resource exclusion operations may be performed, wherein in each resource exclusion operation, a resource is selected from the set S A，P Exclude zero or one or more type 1 candidate resources from the set S. A，P A type 1 candidate resource in If the resource exclusion condition of type 4 is met, then the resource is excluded from the set S A，P Excluded from the

[0326] Regarding the The type 4 resource exclusion condition may include one or more of the following (for example, any combination in an "and" or "or" manner):

[0327] Time slots It is a "monitored time slot".

[0328] The UE is in the time slot An SCI meeting the conditions of type 4 control information is received The type 4 control information condition may include one or more of the following (for example, any combination in an "and" or "or" manner):

[0329] ■ The corresponding SCI format is SCI format 1-B.

[0330] ■ The "Resource Reservation Period" field (if present) in the

[0331] ■ The Priority field in the

[0332] ●For the The RSRP measurement performed is above a threshold

[0333] ● The type 1 resource overlap condition is met.

[0334] In some aspects of the present disclosure, in sub-step (in It is a satisfying Integer, for example ), the resource subset S may be selected based at least in part on the resource subset S A，P The number of elements in Perform one or more actions, for example, if the Less than X0·M total，ref , then each priority value combination (p i , p j ) corresponds to the threshold Th(p i , p j ) increment by X1dB, then jump to the sub-step Here, X1 may be a predefined or (pre)configured value; X1 may be an integer, for example, X1=3.

[0335] In addition, in step S103, the resource subset S is reported to a higher layer. A，P .

[0336] In the first embodiment of the present disclosure, "SL PRS transmission" can be replaced by "PSCCH / SL PRS transmission".

[0337] In the first embodiment of the present disclosure, the set It can be the set

[0338] In the first embodiment of the present disclosure, the set It can be the set

[0339] In the first embodiment of the present disclosure, the time slot The collection It can be in the resource pool (pre) configured in the time slot The set of all SL PRS resource identifiers.

[0340] In the first embodiment of the present disclosure, the time slot The collection Can be a collection

[0341] In the first embodiment of the present disclosure, the set It can be in the resource pool Time slot The collection of all SL PRS resources in.

[0342] In the first embodiment of the present disclosure, the set It can be in the resource pool Time slot In the set, the SL PRS resource identifier The collection of all SL PRS resources in.

[0343] In the first embodiment of the present disclosure, the X0 may be a signal at least partially based on the prio TX A certain predefined or (pre)configured value.

[0344] In the first embodiment of the present disclosure, the M total，ref Can be equal to the M total，0 °

[0345] In the first embodiment of the present disclosure, the M total，ref Can be equal to the M total，1 °

[0346] Embodiment 1 of the present disclosure may be applicable to (or applicable to and only applicable to) sidelink resource allocation mode 2.

[0347] The first embodiment of the present disclosure may be applicable to (or applicable to and only applicable to) full sensing.

[0348] The first embodiment of the present disclosure may be applicable to (or applicable to and only applicable to) a dedicated positioning resource pool (ie, the resource pool is a dedicated positioning resource pool).

[0349] The first embodiment of the present disclosure may be applicable to (or applicable to and only applicable to) operations without shared spectrum channel access (eg, operations on licensed spectrum).

[0350] The first embodiment of the present disclosure may be applicable to (or applicable to and only applicable to) operations with shared spectrum channel access (eg, operations on unlicensed spectrum).

[0351] Thus, according to the first embodiment, the present disclosure provides a method for determining a dedicated positioning resource pool. In the SL PRS resource identifier comes from the set When the SL PRS resource subset is set, for a time slot that is not monitored For the resource pool Each resource reservation period (pre) configured in Each SL PRS resource identifier in the time slot The combination of the corresponding SL PRS resources in the time slot determines a hypothetical The SCI received in the UE is selected and all periodic and non-periodic resources indicated by the SCI are excluded. This greatly reduces the probability of conflict with SL PRS resources reserved by other UEs in the resources finally selected for SL PRS transmission, thereby improving the performance of SL PRS resource selection.

[0352] Modifications

[0353] 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.

[0354] FIG2 is a block diagram showing a user equipment involved in the present disclosure.

[0355] 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, these instructions may execute the above-described method performed by the user equipment as described in detail in this disclosure.

[0356] The method of the present disclosure and the user equipment involved have been described above in conjunction with preferred embodiments. Those skilled in the art will appreciate that the method illustrated above is merely exemplary, and that the various embodiments described above can be combined with one another unless conflicts arise. The method of the present disclosure is not limited to the steps and sequence illustrated above. The user equipment illustrated above may include further modules. The various identifiers illustrated 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 numerous variations and modifications.

[0357] 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 (for example, merging constant terms, exchanging two additive terms, exchanging two multiplication terms, changing the sign of a term and moving it from the left side to the right side of the equation or inequality, changing the sign of a term and moving it from the right side to the left side of the equation or inequality, etc.), and the mathematical expressions, mathematical equations, or mathematical inequalities before and after simplification, transformation, or rewriting can be considered equivalent.

[0358] 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 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.

[0359] 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.

[0360] 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 a 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.

[0361] In addition, each functional module or each feature of the user equipment used in each of the above embodiments can be implemented or executed by a circuit, which is typically one or more integrated circuits. The circuits 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, controller, microcontroller or 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, advanced technologies that can replace current integrated circuits emerge, the present disclosure may also use integrated circuits obtained using the advanced technologies.

[0362] 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: A SL PRS resource subset S A，P Initialize as a dedicated positioning resource pool The corresponding SL PRS resource identifier in a resource selection window is in a set of SL PRS resource identifiers provided by a higher layer. The collection of SL PRS resources in From the set S A，P Exclude zero, one or more SL PRS resources from the SL PRS resource, where for each time slot that is not monitored in a sensing window, Each in the resource pool The resource reservation period configured in SL PRS resource identifier in the time slot, and a hypothetical The SCI format 1-B received from the set S indicating the resource reservation period and the SL PRS resource identifier is selected from the set S A，P excluding SL PRS resources overlapping with the SL PRS resources indicated by the SCI, and Report the set S to higher layers A，P .

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

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