Method executed by user equipment and user equipment

Abstract

According to the disclosure, a method executed by user equipment is provided, which is characterized by comprising the following steps: receiving sidewalk control information SCI, and determining a propagation type and a destination identifier which are associated with a sidewalk positioning reference signal SL PRS transmission request identifier and received in higher layer signaling according to the sidewalk positioning reference signal SL PRS transmission request identifier indicated in the SCI, and transmitting the requested SL PRS according to the propagation type and the destination identifier.

Description

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 performed 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 evolution system based on LTE (Long-Term Evolution) wireless access technology, and a 5G system or its evolution 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 (e.g., 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 the base station and the UE can be called a Uu interface (e.g., an NR-Uu interface based on NR; and 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).

[0003] One or more positioning and / or ranging technologies may be supported in a wireless communication system. When positioning and / or ranging a UE, the position (e.g., absolute position; or relative position) and / or direction of the UE may be calculated or estimated based on measurements of downlink signals, or measurements of uplink signals, or measurements of sidelink signals. In order to support communications on licensed and / or unlicensed spectrum, and / or positioning of UE on licensed and / or unlicensed spectrum, a series of issues need to be addressed, such as channel access mechanisms; or structures of physical layer channels and / or signals; or physical layer control information and / or signaling processes (e.g., synchronization processes, or feedback and / or determination mechanisms); or higher layer control information and / or signaling processes; or resource allocation and / or management; or 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, 3GPPTSG 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 TSGRAN Meeting #87-e

[0010] Non-patent document 5: RP-202846, Revised WID on NR Sidelink enhancement, 3GPP TSGRAN 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, 3GPPTSG 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 NRPositioning, 3GPP TSG RAN Meeting #98-e Summary of the invention

[0017] 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, which improves the efficiency of SL PRS transmission request and response by utilizing a SL PRS transmission request identifier in SCI to indicate a SL PRS transmission request, and associating the SL PRS transmission request identifier with a predefined or (pre) configured or a set of parameters related to SL PRS transmission transmitted in a higher layer protocol.

[0018] According to the present disclosure, a method executed by a user equipment is proposed, characterized in that it includes: receiving sideline control information SCI, and determining a propagation type and a destination identifier received in a higher layer signaling to which it is associated based on a sideline positioning reference signal SL PRS transmission request identifier indicated in the SCI, and transmitting the requested SL PRS based on the propagation type and the destination identifier.

[0019] 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.

[0020] Therefore, the present disclosure provides a method for improving the efficiency of SL PRS transmission requests and responses by utilizing a SL PRS transmission request identifier in the SCI to indicate a SL PRS transmission request, and associating the SL PRS transmission request identifier with a set of parameters related to SL PRS transmission that are predefined or (pre) configured or transmitted in a higher layer protocol. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] 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:

[0022] Figure 1A flowchart corresponding to a method executed by a user equipment according to the first embodiment of the present disclosure is shown.

[0023] Figure 2 A flowchart corresponding to a method executed by a user equipment according to the second embodiment of the present disclosure is shown.

[0024] Figure 3 A flowchart corresponding to a method executed by a user equipment according to Embodiment 3 of the present disclosure is shown.

[0025] Figure 4 A block diagram of a user equipment involved in the present disclosure is shown. DETAILED DESCRIPTION

[0026] The present disclosure is described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the present disclosure should not be 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 the understanding of the present disclosure.

[0027] The following uses the 5G (or NR, or 5G NR) wireless communication system specification formulated by 3GPP and its subsequent evolutionary versions (e.g., 5G Advanced) as an example application environment to specifically describe multiple implementations of the present disclosure. However, it should be noted that the present disclosure is not limited to the following implementations, but is applicable to more 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, LTE-Advanced Pro, etc.

[0028] The terms given in the present disclosure may be named differently in different wireless communication systems, but unified terms are used in the present disclosure, and when applied to a specific system, they can be replaced with terms used in the corresponding system.

[0029] In all embodiments and implementations of the present disclosure, unless otherwise specified:

[0030] ●“Node” and “communication node” are interchangeable.

[0031] ●“Node” may refer to a UE, or a network node (eg, a base station), or a communication node in another form.

[0032] ●“Base station” may refer to a 4G base station, such as eNB (E-UTRAN Node B, where E-UTRAN stands for Evolved Universal Terrestrial Radio Access Network); or a 5G base station, such as gNB (a node that provides NR user plane and control plane protocol termination to UE and is connected to the 5G core network through the NG interface), or ng-eNB (a node that provides E-UTRA user plane and control plane protocol termination to 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.

[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 no ambiguity arises, the “lower layer” may also be referred to as the “lower layer”.

[0034] ●“Higher layer(s)” (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 a physical layer (or referred to as “layer 1”), the “higher layer” may refer to a MAC (Medium Access Control) layer, and / or an RLC (Radio Link Control) layer, and / or a PDCP (Packet Data Convergence Protocol) layer, and / or a PC5-RRC (Radio Resource Control) layer, and / or a PC5-S layer, and / or an RRC layer, and / or other protocol layers or protocol sublayers. Unless otherwise specified, the reference protocol layer or reference protocol sublayer is a physical layer. Where no ambiguity arises, the “higher layer” may also be referred to as the “higher layer”.

[0035] ●“Signaling” can refer to signaling at the physical layer, or signaling at a higher layer.

[0036] ● "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).

[0037] ●“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., RRC signaling transmitted from a base station to a UE, which includes the configuration information; or PC5-RRC signaling transmitted from UE-A to UE-B, which includes the configuration information).

[0038] ● "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.

[0039] ● "(Pre)configuration" can mean configuration or pre-configuration.

[0040] ● "Parameter" may refer to a higher layer parameter, for example, a parameter (pre-)configured at the RRC layer.

[0041] ● “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.

[0042] ●The sequence "t0, t1, ..., t N-1 " can be used to indicate a situation where N is greater than or equal to 1. For example, N=1, and correspondingly, the sequence is "t0"; for another example, N=2, and correspondingly, the sequence is "t0, t1".

[0043] ● 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 not later than) the time corresponding to t1, the time corresponding to t1 is earlier than (or not later than) the time corresponding to t2, and so on.

[0044] ●μ can represent the subcarrier spacing configuration (subcarrier spacing configuration), for example, μ=0; Δf can represent the corresponding subcarrier spacing (SCS), for example, μ=0 corresponds to Δf=15kHz.

[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, for example, the starting symbol of the resource; another example, the starting time slot of the resource; another example, the number of symbols occupied by the resource; another example, 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 another example, 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 the one or more layers to which a TB (Transport Block) is mapped in spatial multiplexing. The mapping may also be considered as the mapping of a codeword corresponding to the TB to the one or more layers.

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

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

[0054] The index of an element in a sequence (or array, or list, or set, etc.) may start from 0. For example, the first RB of an RB set may be referred to as RB 0 of the RB set.

[0055] ●One by The bits in a bitmap (or bit string) composed of bits can be indexed as 0, 1, ... in the order from MSB (Most Significant Bit) to LSB (Least Significant Bit) (or, from LSB to MSB), and Among them, the It may be referred to as the size (or "length") of the bitmap, and the MSB may be the leftmost bit of the bitmap, or the rightmost bit of the bitmap.

[0056] ● An object (e.g., a subcarrier, a time slot, a cyclic shift, etc.) can be represented by its index, where the index can be an index in a set; accordingly, the index can be called an "identifier" (ID) of the object. For example, a subchannel set Each element in may represent a subchannel and / or a subchannel index corresponding to the subchannel.

[0057] ●In signaling, the object can be indicated by an object index.

[0058] If no corresponding 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.

[0059] Δ(x1, x2) may represent an offset between x1 and x2, where x1 and x2 may be two comparable parameters (or variables), or two possible values ​​of a parameter (or variable). For example, if x1 and x2 represent two time slots in a resource pool, Δ(x1, x2) may be defined as the difference between the physical time slot index corresponding to the time slot x2 and the physical time slot index corresponding to the time slot x1, or as the difference between the logical time slot index corresponding to the time slot x2 and the logical time slot index corresponding to the time slot x1.

[0060] ●“Offset between x1 and x2” can also be called the offset of x2 with respect to x1 (offset of x2 with respect to x1, or offset of x2 relative to x1).

[0061] ●“Offset between x1 and x2” can also be called the offset from x1 to x2.

[0062] ●If Δ(x1, x2) = D, x2 can be written as x2 = ADD(x1, D).

[0063] ●If Δ(x1, x2) = D, x1 can be written as x1 = SUBTRACT(x2, D).

[0064] • The offset between two subcarriers may refer to the offset between the center frequencies of the two subcarriers.

[0065] ●Modulo Operation can be defined as r≡a mod N, where

[0066] ■r is the remainder.

[0067] ■a=N×q+r,where q can be called the integer quotient of a and N.

[0068] ■0≤r<|N|.

[0069] ● Round 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.

[0070] ●SCI (Sidelink Control Information) can refer to the first stage SCI (1 st -stage SCI) and / or second-stage SCI (2 nd -stage SCI).

[0071] ●SL may refer to NR SL.

[0072] ●“Sidetracking” may refer to NR sidetracking.

[0073] ●“Carrier” may refer to a sidecarrier.

[0074] ● "Bandwidth fragment" may refer to a side-link bandwidth fragment.

[0075] ●“Resource pool” may refer to the sideline resource pool.

[0076] ●A "sidelink time slot" may refer to a time slot configured with sidelink resources (e.g., a time slot in a resource pool). The "sidelink resources" may include or not include resources for specific purposes, wherein the "resources for specific purposes" may be resources used for synchronization procedures, such as resources used to transmit S-SS / PSBCH (S-SS / PhysicalSidelink Broadcast CHannel, or Sidelink-Synchronization Signal / PhysicalSidelink Broadcast CHannel) blocks.

[0077] ●A "physical time slot" may refer to a time slot belonging to a physical time slot set, wherein 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, ...

[0078] ●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, ...

[0079] ●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.

[0080] ●A "sideways time slot" may refer to a time slot in a set of time slots belonging to a resource pool.

[0081] ●A "sidetrack time slot" may refer to a time slot that may be configured as a set of time slots belonging to a resource pool.

[0082] ●A "sidelink transmission" may correspond to the transmission of a physical channel (for example, PSCCH, Physical Sidelink Control Channel; PSSCH, Physical Sidelink Shared Channel; PSFCH, Physical Sidelink Feedback Channel; PSBCH, Physical Sidelink Broadcast Channel).

[0083] ●A "sidelink transmission" may correspond to the transmission of a physical signal (for example, S-PSS, Sidelink primary synchronization signal; S-SSS, Sidelink secondary synchronization signal; or DM-RS, Demodulation reference signals).

[0084] ● A "sideline transmission" may correspond to the transmission of more than one physical channel or physical signal multiplexed in the same resource (e.g., one or more symbols in a sideline time slot in the time domain, and one or more subchannels in the frequency domain, or one or more resource blocks, or one or more subcarriers). For example, a "PSBCH transmission" may correspond to the transmission of a PSBCH channel and its associated DM-RS signal; another example is an "S-SS / PSBCH block transmission" (or a

[0085] A "S-SSB transmission" may include the transmission of an S-PSS signal, the transmission of an S-SSS signal, and the transmission of a PSBCH channel, and the corresponding resource multiplexing method may be recorded as "S-PSS / S-SSS / PSBCH"; a "PSCCH / PSSCH transmission" (or referred to as a "PSSCH / PSCCH transmission") may correspond to the transmission of a PSCCH channel and an associated PSSCH channel, and the corresponding resource multiplexing method may be recorded as "PSSCH / PSCCH"; a "PSCCH / PSSCH / SL PRS transmission" (or referred to as a "PSSCH / PSCCH / SL PRS transmission") may correspond to the transmission of a PSCCH channel and an associated PSSCH channel and the transmission of an SL PRS, and the corresponding resource multiplexing method may be recorded as "PSSCH / PSCCH / SL PRS".

[0086] ●In the time domain, a "frame" (or "radio frame") can refer to a system frame or a direct frame. A frame number period (e.g., T FNP ) may correspond to a predefined or configured parameter, or may be determined based on one or more predefined or configured parameters, for example, T FNP = 1024 frames. The duration of each frame can be T f = 10 milliseconds, which may 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 written as in, can be equal to 10·2 μ The time slot index in a frame number cycle can be recorded as in Can be equal to (For example, 1024·(10·2 μ )).

[0087] ●“Sidelink grant” can refer to “sidelink dynamic grant” or “sidelink configured grant”.

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

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

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

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

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

[0093] ● A destination identifier (destination ID) can be a sideline identifier. 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 is the source identifier of the intended receiving UE).

[0094] A source ID may be a sideline 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 correspond to a priority value. For example, a priority level can correspond to a priority value of 0, and another priority level can correspond to a priority value of 1.

[0096] ● A priority 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 unequal. For example, a priority may correspond to a priority value of 0 in the physical layer and a priority value of 1 in a higher layer; for another example,

[0097] The priority may correspond to a priority value of 1 at the physical layer, and a priority value of 2 at a higher layer.

[0098] ● The relationship between the priority order and the corresponding priority value may be: as the priority value increases, the priority (or "priority order") decreases. 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 higher than the priority of the second side transmission.

[0099] ● The relationship between the priority order and the corresponding priority value may be: as the priority value increases, the priority (or referred to as "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.

[0100] ● "Positioning" may refer to "side-bypass positioning" and / or "side-bypass ranging", or may refer to positioning and / or ranging using techniques including side-bypass positioning and / or ranging. For example, a "positioning resource pool" may refer to a "side-bypass positioning resource pool".

[0101] ● “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] ● “Anchor UE” may refer to a UE that provides support for positioning and / or ranging of a target UE (or may be referred to as “a device that provides support for positioning and / or ranging of a target UE”).

[0103] ●“Server UE” (Server UE, or “Side Positioning Server UE”, SL Positioning Server UE) may refer to a UE that provides position calculation for services based on side positioning and / or ranging. To calculate the position of a target UE, a server UE may interact with other UEs via the PC5 interface. A target UE may be a server UE. An anchor UE may be a server UE.

[0104] Pre-Emb

[0105] The positioning-related reference signal transmitted and / or received on the sidelink may be referred to as SLPRS (or “SL-PRS”, Sidelink Positioning Reference Signal).

[0106] On the sidelink, a resource pool can be configured for one or more purposes, for example, including one or more of sidelink communication, sidelink discovery, and sidelink positioning. A combination of one or more specific purposes can correspond to a "resource pool type".

[0107] Specifically, for example, a resource pool that can be used to transmit and / or receive side channels and / or signals used for positioning (for example, part or all of the SL PRS, side channels and / or signals for carrying control information related to positioning, and side channels and / or signals for carrying measurement reports related to positioning) can be called a "positioning resource pool". In a positioning resource pool, the frequency domain resources that can be used for the SL PRS can correspond to part or all of the frequency domain resources in the resource pool (for example, part or all of the RBs in the resource pool; for example, part or all of the subchannels in the resource pool), and the time domain resources that can be used for the SL PRS can correspond to part or all of the time domain resources in the resource pool (for example, part or all of the symbols in some or all of the time slots in the resource pool). A positioning resource pool dedicated to positioning can be called a "dedicated positioning resource pool" (or, in the absence of risk of confusion, the resource pool can be called a "dedicated resource pool"). One dedicated positioning resource pool may be used only for transmitting and / or receiving side channels (eg, PSCCH) and / or signals (eg, SLPRS) used for positioning.

[0108] For another example, a resource pool that can be used to transmit and / or receive sidelink channels and / or signals for sidelink communication (e.g., PSCCH; PSSCH; PSFCH (Physical Sidelink Feedback Channel)) can be called a "sidelink communication resource pool". Positioning-related information defined in higher-layer protocols, such as control information and / or measurement reports, can be considered as data from higher-layer protocols, and accordingly, can be carried in a PSSCH transmitted in a sidelink communication resource pool. A sidelink communication resource pool dedicated to sidelink communication can be called a "dedicated sidelink communication resource pool".

[0109] For example, a resource pool that can be used to transmit and / or receive sideline channels and / or signals (e.g., PSCCH; for example, PSSCH; for example, PSFCH) for sideline discovery can be called a "sideline discovery resource pool". Positioning-related information defined in a higher-layer protocol, such as control information and / or measurement reports, can be considered as data from a higher-layer protocol and, accordingly, can be carried in a PSSCH transmitted in a sideline discovery resource pool. A sideline discovery resource pool dedicated to sideline discovery can be called a "dedicated sideline discovery resource pool".

[0110] A resource pool that can be used for positioning and one or more other purposes (e.g., sideline communication and / or sideline discovery) may be referred to as a "shared positioning resource pool" (or, without risk of confusion, a "shared resource pool").

[0111] In a bandwidth segment, one sidetrack communication resource pool may always be used for sidetrack discovery.

[0112] In a bandwidth segment, if SL PRS resources are configured for a sideline communication resource pool (or, if the sideline communication resource pool includes one or more SL PRS configuration parameters), the sideline communication resource pool may be a resource pool that can be used for positioning, and accordingly, the sideline communication resource pool may be a shared positioning resource pool. An SLPRS configuration may correspond to one or more parameters for configuring SL PRS resources (e.g., time domain resources; for example, frequency domain resources) and related to the transmission and / or reception of SL PRS.

[0113] A bandwidth segment may be associated with a SL PRS configuration, and the SL PRS configuration may be applied to part or all of the resource pools in the bandwidth segment. Accordingly, each resource pool to which the SL PRS configuration is applied may be a shared positioning resource pool.

[0114] In a bandwidth segment, a sideline communication resource pool may always be a resource pool that can be used for positioning.

[0115] In a bandwidth segment, under certain conditions (for example, when no dedicated sidewalk discovery resource pool is configured), any sidewalk communication resource pool can be a resource pool that can be used for sidewalk discovery.

[0116] In a bandwidth segment, under certain conditions (for example, when no dedicated positioning resource pool is configured), any sideline communication resource pool can be a resource pool that can be used for positioning.

[0117] Optionally, in a bandwidth segment, under certain conditions (for example, when no dedicated positioning resource pool is configured), any side-discovery resource pool can be a resource pool that can be used for positioning.

[0118] In a dedicated positioning resource pool (e.g., resource pool e in bandwidth segment b in carrier c) j ), the set consisting of all RBs corresponding to the frequency domain resources that can be used for SL PRS (or all RBs corresponding to all sub-channels corresponding to the frequency domain resources that can be used for SLPRS) can be recorded as The collection The set of all subcarriers corresponding to all RBs in can be recorded as The collection Can be equal to the set , or the set a subset of (e.g., a subset that is predefined or configured or indicated in an SCI or other signaling), wherein the set is the resource pool e j All RBs in the resource pool (or the resource pool e j The set consists of all RBs corresponding to all sub-channels in the Can be equal to the set Or the collection a subset (e.g., a predefined or configured subset) of is the set The set consists of all subcarriers corresponding to all RBs in the .

[0119] The resource pool j A time slot in ) can contain "SL PRS occasions" (SL PRS occasion, also known as "SL PRS transmission occasion", SL PRS transmission occasion, or "SL PRS transmission resource occasion", SL PRS transmission resource occasion), for example, are respectively recorded as in,

[0120] ● Can be an integer greater than or equal to 1.

[0121] ● It may correspond to a predefined or configured parameter, or may be determined according to one or more predefined or configured parameters, or may be determined in other ways.

[0122] ● It may be independent of i0, for example, for the resource pool e j In any time slot, in, It may correspond to a predefined or configured parameter, or may be determined according to one or more predefined or configured parameters, or may be determined in other ways.

[0123] right In the time domain, it can correspond to the time slot A symbol set in ),in,

[0124] ● Can be an integer greater than or equal to 1.

[0125] ● It may correspond to a predefined or configured parameter, or may be determined according to one or more predefined or configured parameters, or may be determined in other ways.

[0126] ● It may be independent of i0 and part or all of m, for example, in the resource pool e j For any time slot in in, It may correspond to a predefined or configured parameter, or may be determined according to one or more predefined or configured parameters, or may be determined in other ways.

[0127] ● The symbols in can be consecutive symbols, for example,

[0128] ● It may correspond to a predefined or configured parameter, or may be determined according to one or more predefined or configured parameters, or may be determined in other ways.

[0129] ● It may be independent of i0 and part or all of m, for example, in the resource pool e j For any time slot in in, It may correspond to a predefined or configured parameter, or may be determined according to one or more predefined or configured parameters, or may be determined in other ways.

[0130] Yes Can be reused SL PRS resources (SL PRS resource, also known as “SL PRS transmission resource”, SL PRS transmission resource, or “SL PRS transmission occasion resource”, SL PRS transmission occasion resource), for example, are respectively recorded as in,

[0131] ● Can be an integer greater than or equal to 1, for example, Another example: Another example: Another example: Another example: Another example:

[0132] ● It may correspond to a predefined or configured parameter, or may be determined according to one or more predefined or configured parameters, or may be determined in other ways.

[0133] ● It may be independent of i0 and part or all of m, for example, in the resource pool e j For any time slot in in, It may correspond to a predefined or configured parameter, or may be determined according to one or more predefined or configured parameters, or may be determined in other ways.

[0134] right SL PRS Resources In the time domain, it can correspond to the symbol set In the frequency domain, it can be mapped to one or more consecutive RBs (for example, the corresponding set is The collection The set of all subcarriers corresponding to all RBs in can be recorded as ), where:

[0135] ● can be equal to the set Or the collection A subset of .

[0136] ● can be a predefined or configured set, or can be determined in other ways, e.g. The determination method may be related to a corresponding sidelink resource allocation mode (sidelink resource allocation mode, or called “sidelink resource allocation scheme”).

[0137] ● may be independent of some or all of i0, m, and q (correspondingly, may be independent of some or all of i0, m, and q), for example, in the resource pool e j For any time slot in as well as in, It may be a predefined or configured set, or may be determined according to one or more predefined or configured parameters, or may be determined in other ways.

[0138] SL PRS resources The mapped subcarrier set may correspond to the set in two different symbols respectively. The same subset of, or respectively corresponding to the said set two different subsets.

[0139] ●To symbol SL PRS Resources The mapped subcarrier set can be recorded as

[0140] The subcarrier set can correspond to a "comb-like pattern", and accordingly, the It can be called the size of the comb pattern (comb size), for example, the subcarrier set Can be a collection

[0141]

[0142] and the collection The intersection of

[0143] The reference point corresponding to x=0 may be subcarrier 0 of CRB 0. Accordingly, the set Each element in may be a subcarrier represented based on the same reference point (eg, subcarrier 0 of CRB 0).

[0144] ● Can be called SL PRS resource RE (Resource Element, resource element) offset (RE offset).

[0145] ● Can be a satisfying The value of .

[0146] ● It may be independent of i0 and part or all of m, for example, in the resource pool e j For any time slot in

[0147] ● Can be used to select the appropriate SL PRS timing (i.e. ) identifies SL PRS resources

[0148] ● It may be independent of i0 and part or all of m.

[0149] ● Can be a The relevant set, for example, if but Again, if but

[0150] The resource pool j in the time slot The number of SL PRS resources in can be recorded as For example, Said can be independent of i0, for example, Said Each of the SL PRS resources may correspond to a "SL PRS resource identifier" (SL PRSresource identifier, or SL PRS resource ID), wherein a SL PRS resource identifier may be in the resource pool e j The time slot in An example of the allocation (or "mapping") of SL PRS resource identifiers is to traverse the SL PRS resource index in a manner of first increasing the RE offset in the SL PRS opportunity and then increasing the SLPRS opportunity index in the time slot. SL PRS resources and assign SL PRS resource identifiers 0, 1, ..., and Specifically, for example, if and SL PRS Resources as well as The corresponding SLPRS resource identifiers are 0, 1, 2, 3, 4, and 5. Another example of the allocation (or "mapping") of SL PRS resource identifiers is to traverse the SL PRS resource identifiers by first increasing the SL PRS opportunity index in the time slot and then increasing the RE offset in the SL PRS opportunity. SL PRS resources and assign SL PRS resource identifiers 0, 1, ..., and Specifically, for example, if and SL PRS Resources as well as The corresponding SL PRS resource identifiers are 0, 1, 2, 3, 4, and 5 respectively.

[0151] right as well as SL PRS Resources The corresponding SL PRS resource identifier can be recorded as

[0152] The time slot can contain one or more symbols for AGC (Automatic Gain Control). For example, Part or all of n, symbol The previous symbol (e.g. ) can be used for AGC.

[0153] The time slot may contain one or more symbols for switching from reception to transmission (RX-TX switching, or RX-TX turnaround, where RX may represent reception and TX may represent transmission). For example, Part or all of n, symbol The next symbol (for example, the symbol ) can be used for conversion from reception to transmission.

[0154] The time slot One or more symbols for switching from transmission to reception may be included.

[0155] In the time slot In, yes as well as SL PRS Resources A resource for PSCCH transmission may be associated (eg, the resource is referred to as a "PSCCH resource" and is recorded as ), or it can be considered that Related A PSCCH transmission on (or the SCI carried therein).

[0156] In the time slot In the , you can predefine or configure "PSCCH symbols" used for PSCCH transmission, where:

[0157] ● Can be an integer greater than or equal to 1.

[0158] ● It may correspond to a predefined or configured parameter, or may be determined according to one or more predefined or configured parameters, or may be determined in other ways.

[0159] ● It may have nothing to do with i0.

[0160] ● The symbols may be consecutive symbols.

[0161] ● For each of the symbols, one or more (e.g., all) of the following are true:

[0162] ■The symbols described are not used for SL PRS.

[0163] ■The symbols described are not used for AGC.

[0164] ■ The symbol is not used for switching from reception to transmission.

[0165] ■ The symbol is not used for switching from transmission to reception.

[0166] In the time slot In, yes as well as SL PRS Resources (or, the corresponding SL PRS transmission) associated with the PSCCH resource (or, a corresponding PSCCH transmission) one or more parameters (e.g., the One or more frequency domain parameters, such as the index of the lowest subchannel, the index of the lowest RB of the lowest subchannel, the index of the lowest subcarrier of the lowest RB of the lowest subchannel, the index of the lowest RB, the index of the lowest subcarrier of the lowest RB, the index of the lowest subcarrier; and the index of the lowest subcarrier; Each of the one or more time domain parameters, such as the starting symbol, can be based on the SLPRS resource One or more parameters determine, for example, "the SL PRS resource One or more parameters may include one or more of the following:

[0167] ●m.

[0168] ●q.

[0169] ●The SL PRS resources RE offset (for example, the RE offset may be equal to q).

[0170] ●

[0171] In the time slot For a successfully received PSCCH transmission on a PSCCH resource (or, for the SCI carried in the PSCCH transmission), its associated SLPRS resource (e.g., denoted as ) (e.g., including m z ,q z Each of the part or all of the SL PRS resource identifier (i.e., the RE offset and the SL PRS resource identifier) ​​may be determined according to one or more parameters of the PSCCH resource (or the PSCCH transmission). For example, “one or more parameters of the PSCCH resource (or the PSCCH transmission)” may include one or more of the following:

[0172] • The index of the lowest subchannel.

[0173] • The index of the lowest RB of the lowest subchannel.

[0174] • The index of the lowest subcarrier of the lowest RB of the lowest subchannel.

[0175] ●The index of the lowest RB.

[0176] ● The index of the lowest subcarrier of the lowest RB.

[0177] ●The index of the lowest subcarrier.

[0178] ●Starting symbol.

[0179] Optionally, in the resource pool e j Some or all SL PRS resources in some or all time slots are not associated with any PSCCH resources.

[0180] In a shared positioning resource pool (eg, resource pool e in the bandwidth segment b in the carrier c) g), a SL PRS transmission can be multiplexed with a PSCCH transmission and a PSSCH transmission associated with the PSCCH transmission in a time slot, wherein the SL PRS transmission can be referred to as a SL PRS transmission associated with the PSCCH transmission (or the SCI carried in the PSCCH transmission, or the PSSCH transmission, or the PSCCH / PSSCH transmission multiplexed with the PSCCH transmission and the PSSCH transmission, or the SCI carried in the PSCCH / PSSCH transmission). The SCI carried in the PSCCH transmission (or the PSCCH / PSSCH transmission) can be used to indicate information related to the SL PRS transmission. The offset between the lowest RB of the SL PRS resource corresponding to the SL PRS transmission and the lowest RB of the resource corresponding to the PSCCH transmission (or PSSCH transmission, or PSCCH / PSSCH transmission) associated with the SL PRS transmission can correspond to a predefined or configured parameter (e.g., 0). The offset of the highest RB of the SL PRS resource corresponding to the SL PRS transmission and the highest RB of the resource corresponding to the PSCCH transmission (or PSSCH transmission, or PSCCH / PSSCH transmission) associated with the SL PRS transmission may correspond to a predefined or configured parameter (e.g., 0). The SL PRS may correspond to a comb pattern and a corresponding RE offset (e.g., reusing the RE offset definition of a SL PRS resource in a dedicated positioning resource pool, where the RE offset may be Replaced by the set of all subcarriers corresponding to all RBs corresponding to the PSCCH / PSSCH transmission (or, the PSSCH transmission)).

[0181] 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

[0182]

[0183] in,

[0184] c(n)=(x1(n+N c )+x2(n+N c ))mod 2

[0185] x1(n+31)=(x1(n+3)+x1(n))mod 2

[0186] x2(n+31)=(x2(n+3)+x2(n+2)+x2(n+1)+x2(n))mod 2

[0187] Where Nc =1600; x1(n) can be initialized to x1(0)=0, x1(1)=x1(2)=…=x1(30)=0; x2(n) can be initialized by an initial value c init Completed, where c init It can be recorded as

[0188] c init It may be related to one or more parameters (e.g., time domain and / or frequency domain parameters) associated with the SL PRS transmission (or the SL PRS resource where the SL PRS transmission is located), for example, including one or more of the following:

[0189] ● A "SL PRS sequence ID" (e.g. ).

[0190] The index of the time slot where the SL PRS is transmitted in the corresponding frame (e.g., denoted as ).

[0191] The number of symbols in each time slot (e.g. ).

[0192] ●The symbol index within the time slot (l).

[0193] Specifically, for example, in the symbol l, c init It can be expressed as

[0194]

[0195] Said It can be a parameter provided by a higher layer (for example, denoted as sl-PRS-Seq-ID). Optionally, if the higher layer does not provide the parameter sl-PRS-Seq-ID, then It can be determined according to predefined rules, for example, It can be determined according to the decimal representation of the CRC of the SCI carried (or referred to as "mapped") by the PSCCH transmission associated with the corresponding SLPRS transmission.

[0196] Embodiment 1

[0197] Combine the following Figure 1 The method performed by a UE (for example, denoted as UE-B) according to the first embodiment of the present disclosure is described below. The UE-B may be a server UE, or a target UE, or an anchor UE, or a UE in other forms.

[0198] Figure 1 A flowchart corresponding to the method executed by the UE-B according to the first embodiment of the present disclosure is shown.

[0199] like Figure 1 As shown, in the first embodiment of the present disclosure, the steps performed by the UE-B include: step S101 and step S103.

[0200] Specifically, in step S101, a type 1a sideline positioning message (for example, denoted as ).

[0201] In the A SL PRS transmission request (or "SL PRS request") may be indicated in

[0202] The first protocol layer entity of UE-B may and / or other The information indicated in the instruction is indicated to the second protocol layer entity of the UE-B. For example, the first protocol layer entity receives the The and / or other After the information indicated in and / or other In another example, the first protocol layer entity receives the information indicated by the third protocol layer entity of the UE-B. and / or other After the information indicated in and / or other The information indicated in is indicated to the second protocol layer entity.

[0203] In the UE-B, the first protocol layer entity may decide whether to process the and / or how to deal with the

[0204] In the UE-B, the second protocol layer entity may decide whether to process the and / or how to deal with the

[0205] In the UE-B, the third protocol layer entity may decide whether to process the and / or how to deal with the

[0206] The first protocol layer entity may be a physical layer entity of the UE-B, or a MAC layer entity, or an RRC layer entity, or a PC5-RRC layer entity, or an SLPP layer entity.

[0207] The second protocol layer entity may be a MAC layer entity of the UE-B, or an RRC layer entity, or a PC5-RRC layer entity, or an SLPP layer entity.

[0208] The third protocol layer entity may be a physical layer entity of the UE-B, or a MAC layer entity, or an RRC layer entity, or a PC5-RRC layer entity, or an SLPP layer entity.

[0209] Transmit the The communication node (for example, denoted as CN-A) can be a UE, a gNB, a LMF, or another communication node.

[0210] Said It can be a physical layer message, or a higher layer (e.g., MAC layer; another example, RRC layer; another example, PC5-RRC layer; another example, SLPP layer) message. It can correspond to a time slot (e.g., denoted as) in a resource pool (e.g., denoted as e0). ) received in the SCI (e.g., denoted as ).

[0211] Said It can be part or all of a two-stage SCI. It can be the first stage SCI; for example, the It can be a second stage SCI; for example, the It can include a first-stage SCI and a corresponding second-stage SCI.

[0212] Said It can be a "single-stage SCI". Alternatively, a single-stage SCI can also be called a "first-stage SCI".

[0213] Said Part or all of can be carried in a PSCCH (for example, denoted as )middle.

[0214] Said Part or all of can be carried in a PSSCH. The PSSCH can be The associated PSSCH (or referred to as "the associated PSSCH").

[0215] Said (Or, the ) can indicate resources, among which It can be an integer greater than or equal to 1, or an integer greater than or equal to 0. The resources can be recorded in chronological order as and Said Each of the resources may correspond to a (Or, the ) scheduled side transmission. Each of the resources may be a SL PRS resource (for example, the resource may correspond to a comb pattern and an RE offset), or a time-frequency resource (for example, the resource may correspond to one or more symbols in a time slot in the time domain and one or more subchannels in the frequency domain; one or more SL PRS resources may be multiplexed in the resource, or no SL PRS resource may be multiplexed). The resource may be a resource in the resource pool e0.

[0216] Said and It can be a resource that appears periodically (for example, the corresponding period is time slots), for example, The time slot (for example, denoted as )and The time slot (for example, denoted as ) can satisfy The cycle Can correspond continuous physical time slots, or corresponding to the resource pool e0 consecutive time slots. It can be an integer greater than or equal to 1, or an integer greater than or equal to 0, for example, It can be expressed as The corresponding other periodic resources (i.e. and ) does not exist. This can be called a "Type 1 resource cycle".

[0217] Said Can correspond to a predefined (for example, Another example: Another example: ) or (pre) configured parameters, or can be determined based on one or more predefined or (pre) configured parameters, or can be determined based on the Instructions.

[0218] right Can be A resource that appears periodically in chronological order (for example, the corresponding period is time slots), accordingly, the The resources can be recorded in chronological order as and in, Can be an integer greater than or equal to 1, or an integer greater than or equal to 0; Can be an integer greater than or equal to 1, or an integer greater than or equal to 0. The time slot (for example, denoted as )and The time slot (for example, denoted as ) can satisfy The cycle Can correspond continuous physical time slots, or corresponding to the resource pool e0 consecutive time slots. The resource can be considered as being composed of the (Or, the ) indicated by the resource. Each of the resources may correspond to a (Or, the ) scheduled side transmission. It can be expressed as The corresponding other periodic resources (i.e. and ) does not exist. This can be called a "Type 2 resource cycle".

[0219] Said Can correspond to a predefined (for example, Another example: Another example: ) or (pre) configured parameters, or can be determined based on one or more predefined or (pre) configured parameters, or can be determined based on the Instructions.

[0220] Said Resources and (and, optionally, other periodically occurring resources, e.g. Related resources and A parameter set related to part or all of the side transmission, reception, and measurement can be recorded as

[0221] The collection Some or all of the parameters in may be determined in a predefined or (pre)configured manner.

[0222] The collection Some or all of the parameters can be Instructions.

[0223] The collection Can contain one or more of the following:

[0224] ●A priority, for example Said Can be used to indicate the (and, optionally, in the other resources indicated in ) and / or the priority of corresponding sideline transmission (or reception, or measurement).

[0225] ●A cast type, for example Said Can be used to indicate the (and, optionally, in the other resources indicated in ) and / or the propagation type of the corresponding side transmission (or reception, or measurement).

[0226] ● A destination identifier (destination ID), for example Said Can be used to indicate the (and, optionally, in the other resources indicated in (or received by) and / or the destination identifier of the corresponding sideline transmission (or reception, or measurement). Can be used to request the The one identified (for example, when the indicates "unicast") or multiple (for example, when the (When “multicast” is indicated) the UE transmits SL PRS.

[0227] ● A source identifier (source ID), for example Said Can be used to indicate the (and, optionally, in the other resources indicated in ) and / or a source identifier of the corresponding side transmission (or reception, or measurement).

[0228] ● A type 1 resource cycle, i.e.

[0229] ● A type 2 resource cycle, i.e.

[0230] ● A resource reservation period (or resource reservation interval), for example,

[0231] in,

[0232] ■ It can be an integer greater than or equal to 1, or an integer greater than or equal to 0.

[0233] ■ can be equal to the

[0234] ■ and stated Can be the same parameter.

[0235] ■ can be equal to the

[0236] ■ and stated Can be the same parameter.

[0237] ●The number of occurrences of the periodic resource (or "repetition count"), for example,

[0238] in,

[0239] ■ It can be an integer greater than or equal to 1, or an integer greater than or equal to 0.

[0240] ■ can be defined as

[0241] ■ and stated Can be the same parameter.

[0242] ■ It can be defined as

[0243] ■ It can be defined as

[0244] ■ can be defined as

[0245] ■ and stated Can be the same parameter.

[0246] ■ It can be defined as

[0247] ■ It can be defined as

[0248] Said The time slot may be A resource in .

[0249] Said It can be the (Or, the ) is associated with a resource, accordingly, in the A side transmission on the (Or, the ) is associated with a side transmission. Each of some or all of the time domain and / or frequency domain parameters may be based on the Some or all of the time domain and / or frequency domain parameters are determined. Each of some or all of the time domain and / or frequency domain parameters may be based on the Some or all of the time domain and / or frequency domain parameters are determined.

[0250] Said According to the For example, if the If the value of a "SL PRS Request" field in Indicates a SL PRS transmission request (ie, the ); For example, if the value of the "SLPRS request" field is 0, it means that No SL PRS transmission request is indicated.

[0251] Said (or the , or ) can be associated with a "SL PRS transmission request parameter set" (for example, ). The collection The parameters can be used in the implementation of the Parameters to be applied when requesting SL PRS transmission (e.g., priority; also, broadcast type; also, destination identifier).

[0252] The collection Can contain one or more of the following:

[0253] ●A priority level, for example

[0254] ●A propagation type, for example

[0255] ● A destination identifier, such as

[0256] ● A source identifier, such as

[0257] ●A type 1 resource cycle, for example, Said It can be an integer greater than or equal to 1, or an integer greater than or equal to 0.

[0258] ● A type 2 resource cycle, for example, Said It can be an integer greater than or equal to 1, or an integer greater than or equal to 0.

[0259] ●A resource reservation period, for example, in,

[0260] ■ It can be an integer greater than or equal to 1, or an integer greater than or equal to 0.

[0261] ■ can be equal to the

[0262] ■ and stated Can be the same parameter.

[0263] ■ can be equal to the

[0264] ■ and stated Can be the same parameter.

[0265] ●The number of resources, for example, Said It can be an integer greater than or equal to 1, or an integer greater than or equal to 0. The corresponding resources may be periodically appearing resources.

[0266] The collection Some or all of the parameters in may be determined in a predefined or (pre)configured manner.

[0267] The collection Some or all of the parameters can be Instructions.

[0268] The collection Each of some or all of the parameters in ) and the collection The corresponding (i.e., identically named) parameters in ) can be the same parameter.

[0269] The collection Each of some or all of the parameters in ) and the collection The corresponding (i.e., identically named) parameters in ) can be obtained by The same field indicates in .

[0270] The collection Each of some or all of the parameters in may correspond to one or more predefined or (pre)configured values ​​for special purposes (e.g., referred to as “special values”). Can correspond to the above A two-bit "cast type indicator" field is provided in the transmission type indicator field, wherein the integer value corresponding to the "transmission type indicator" field may correspond to "unicast", "multicast", and "broadcast", respectively, and 3 may not correspond to any transmission type, so 3 may be the integer value of the transmission type indicator field. A special value of; for example, 0 can be the A special value of .

[0271] The collection Some or all of the parameters in and stated The combination of special values ​​corresponding to some or all of There is no indication of any SL PRS transmission request.

[0272] The collection The values ​​of some or all of the parameters in may be obtained by the UE-B through physical layer signaling and / or higher layer (e.g., SLPP layer; PC5-RRC layer; RRC layer; MAC layer) signaling (e.g., signaling transmitted by the CN-A), or determined by the UE-B according to the signaling, or determined by the UE-B itself. Specifically, for example, the signaling may include one or more of the following:

[0273] ●A message used to request sidetrack positioning capability.

[0274] ●A message used to provide side positioning capability.

[0275] ●A message used to request sideline positioning assistance data.

[0276] ●A message used to provide side positioning assistance data.

[0277] ●A message used to request sideline positioning location information.

[0278] ●A message used to provide side-line positioning position information.

[0279] Said (or the , or ) can be associated with a type 1a sideline location identifier (e.g. ).

[0280] Said Can be used to identify the Different values ​​of a type 1a sideline location identifier may correspond to different SL PRS transmission requests.

[0281] Said Can be used to identify the The requested SL PRS transmission and / or measurements of the SL PRS transmission.

[0282] Said Can be used to identify the For example, a location service request (Location Service Request, or LCS Request) can trigger one or more SL PRS transmission requests, wherein each of the one or more SL PRS transmission requests is associated with the Different values ​​of the type 1a sideline positioning identifier may correspond to different positioning service requests.

[0283] Said It can be used to identify a session (e.g., SLPP session) used for positioning in a higher layer entity above the physical layer. It may be an identifier of the session, or It may be an integer mapped to the identifier of the session (for example, mapping the 16-bit identifier of the session to a 3-bit integer).

[0284] Said It can be described in Indicated in, for example, in the Indicated in a "Type 1a Sideline Positioning Identifier" field.

[0285] Said One or more special values ​​(for example, ) can correspond to the There is no indication of any SL PRS transmission request.

[0286] Said Can be used to identify the collection Accordingly, the UE-B may Determine the set Different values ​​of the Type 1a sideline location identifier may be used to identify different sets of parameters.

[0287] Different values ​​of the type 1a sideline positioning identifier can be associated with different positioning methods. For example, in a positioning session, one or more SL PRS transmissions can be triggered based on the first type 1a sideline positioning identifier for SL PRS measurements (and, optionally, position calculations, etc.) involved in the first positioning method; and then one or more SL PRS transmissions can be triggered based on the second type 1a sideline positioning identifier for SL PRS measurements (and, optionally, position calculations, etc.) involved in the second positioning method.

[0288] Said According to the and the Determined by a combination of some or all of the .

[0289] In order to obtain the collection The physical layer signaling of the values ​​of some or all parameters in the physical layer and / or the higher layer (e.g., SLPP layer; also, PC5-RRC layer; also, RRC layer; also, MAC layer) signaling above the physical layer can use the Identify the collection (or the collection some or all of the parameters in ).

[0290] Said (Or, the ) may not indicate any resource (for example, this may be applicable to the case where the resource pool e0 is a dedicated positioning resource pool). Accordingly, the can be equal to 0, the can be equal to 0, the can be equal to 0, the can be equal to 0, the can be equal to 0. In this case, the It can be called a standalone PSCCH. It can be called a standalone SCI. A combination of special values ​​corresponding to one or more fields for indicating time and / or frequency resource allocation (for example, when a field for time resource allocation indicates an invalid time slot and / or invalid symbol) can be used to indicate one or more of the following:

[0291] ●

[0292] ●

[0293] ●

[0294] ●

[0295] ●

[0296] Optionally, when (or, when and only when) the type 1a sideline positioning condition is met, the first protocol layer entity and / or other The information indicated in is indicated to the second protocol layer entity.

[0297] The type 1a sideline positioning condition may be related to the type of the resource pool e0.

[0298] For example, for a dedicated positioning resource pool and / or for a shared positioning resource pool, the type 1a sideline positioning condition may include one or more of the following (for example, in any combination of "and" or "or"):

[0299] ● Indicates a SL PRS transmission request (ie, the ).

[0300] ● indicates "unicast", and the is equal to a source identifier of the UE-B (for example, denoted as ), and the is equal to a destination identifier of the UE-B (for example, denoted as ). It may be any one of the one or more source identifiers of the UE-B (or any one of the source identifiers associated with “unicast”) determined in a predefined or (pre) configured manner or indicated by a higher layer protocol (e.g., SLPP) entity above the physical layer of the UE-B; It can be any destination identifier of one or more destination identifiers of the UE-B (or any destination identifier associated with "unicast"), determined in a predefined or (pre)configured manner or indicated by a higher layer protocol (e.g., SLPP) entity above the physical layer of the UE-B.

[0301] ● indicates "unicast", and ( ) is equal to a (source identifier, destination identifier) ​​combination of the UE-B (for example, denoted as ( )). The combination ( ) can be any one of one or more (source identifier, destination identifier) ​​combinations of the UE-B (or, any one of the (source identifier, destination identifier) ​​combinations associated with "unicast") determined in a predefined or (pre)configured manner or indicated by a higher layer protocol (e.g., SLPP) entity above the physical layer of the UE-B.

[0302] ● indicates "multicast", and the is equal to a destination identifier of the UE-B (for example, denoted as ). It can be any destination identifier of one or more destination identifiers of the UE-B (or any destination identifier associated with "multicast"), determined in a predefined or (pre)configured manner or indicated by a higher layer protocol (e.g., SLPP) entity above the physical layer of the UE-B.

[0303] ● indicates "broadcast", and the is equal to a destination identifier of the UE-B (for example, denoted as ). It can be any destination identifier of one or more destination identifiers of the UE-B (or any destination identifier associated with "broadcast") determined in a predefined or (pre)configured manner or indicated by a higher layer protocol (e.g., SLPP) entity above the physical layer of the UE-B.

[0304] ● is equal to a type 1a sideline location identifier of the UE-B (for example, denoted as ). It may be any one of one or more type 1a sidelink locator identifiers of the UE-B determined in a predefined or (pre)configured manner or indicated by a higher layer protocol (e.g., SLPP) entity above the physical layer of the UE-B.

[0305] The first protocol layer entity converts the When indicating to the second protocol layer entity, one or more The relevant parameters are also indicated to the second protocol layer entity, for example, the one or more parameters related to the The relevant parameters may include one or more of the following:

[0306] ●The collection Some or all of the parameters in Said

[0307] Said Said Said Said Said and the One or more of .

[0308] ●The collection Some or all of the parameters in Said Said Said Said Said

[0309] Said and the One or more of .

[0310] ●

[0311] In addition, in step S103, zero, one or more operations related to the reception of the type 1a sideline positioning message are performed, for example, including one or more of the following:

[0312] If the If no SL PRS transmission request is indicated in the message, no response to the SL PRS transmission request is performed.

[0313] ● If the type 1a side positioning condition is met, the Response.

[0314] ●Execute the Response.

[0315] Part or all of the zero, one or more operations related to the reception of the type 1a sidelink positioning message may be determined by the third protocol layer entity.

[0316] Part or all of the zero, one or more operations related to the reception of the type 1a sidelink positioning message may be determined by the second protocol layer entity.

[0317] Part or all of the zero, one or more operations related to the reception of the type 1a sidelink positioning message may be determined by the first protocol layer entity.

[0318] Regarding the The response may include determining a parameter set related to SL PRS transmission (for example, denoted as ).

[0319] Regarding the The response may include determining one or more resources that can be used to transmit the SLPRS. For example, the corresponding resource set is recorded as R B , the set R B The elements in the sequence are recorded as in, Can be an integer greater than or equal to 1. It can be a SL PRS resource, or a time-frequency resource that can be used for sidelink transmission (for example, a time-frequency resource that can be used to transmit reference signals such as PSCCH, PSSCH, and SL PRS that are multiplexed together).

[0320] Regarding the The response may include, in the set R B A sideline transmission (e.g., an SL PRS transmission; for example, a sideline transmission multiplexed in the same resource by an SL PRS transmission and one or more other transmissions) is performed on each of part or all of the resources in the sideline transmission, and the set is applied to the sideline transmission (or the SL PRS transmission in the sideline transmission) Some or all of the parameters in, for example, in the SCI associated with the SL PRS transmission (for example, the The associated SCI, for example, is recorded as ), indicating the set Some or all of the parameters in .

[0321] The collection Can contain one or more of the following:

[0322] ●A priority level, for example . Can be used to indicate the (and, optionally, in the Other resources indicated in; and, optionally, the set R B other resources in the network) and / or the priority of corresponding side transmission (or reception, or measurement).

[0323] ●A propagation type, for example Said Can be used to indicate the (and, optionally, in the Other resources indicated in; and, optionally, the set R B other resources in the lateral transmission (or reception, or measurement) and / or the propagation type of the corresponding side transmission (or reception, or measurement).

[0324] ● A destination identifier, such as . Can be used to indicate the (and, optionally, in the Other resources indicated in; and, optionally, the set R B other resources in the sideline) and / or a destination identifier of the corresponding sideline transmission (or reception, or measurement).

[0325] ● A source identifier, such as . Can be used to indicate the (and, optionally, in the Other resources indicated in; and, optionally, the set R B other resources in the ) and / or a source identifier of the corresponding side transmission (or reception, or measurement).

[0326] ●A type 1 resource cycle, for example, Said It can be in the The period corresponding to the resources that appear in the resource period of type 1 indicated in It can be an integer greater than or equal to 1, or an integer greater than or equal to 0.

[0327] ● A type 2 resource cycle, for example, . It can be in the The period corresponding to each of the resource groups indicated in the multiple resource groups that appear in the type 2 resource period. It can be an integer greater than or equal to 1, or an integer greater than or equal to 0.

[0328] ●A resource reservation period, for example, .in,

[0329] ■ It can be an integer greater than or equal to 1, or an integer greater than or equal to 0.

[0330] ■ can be equal to the

[0331] ■ and stated Can be the same parameter.

[0332] ■ can be equal to the

[0333] ■ and stated Can be the same parameter.

[0334] ●The number of resources, for example, Among them, the It can be an integer greater than or equal to 1, or an integer greater than or equal to 0. The corresponding resource may be a periodically appearing resource. can be equal to the

[0335] The collection Each of some or all of the parameters in ; For example, ; For example, ; For example, ; For example, For example, ; For example, ; For example, ) may be determined based on one or more factors including one or more of the following:

[0336] ●The collection One or more parameters, such as , Said , , , , , and the One or more of .

[0337] ●The collection One or more parameters, such as , , , , , , , and the One or more of .

[0338] ●The role of the UE-B in the corresponding positioning session (or positioning procedure) (eg, "target UE"; or "anchor UE"; or "server UE").

[0339] ●In the set R B The positioning method (e.g., SL-AoA; or, SL-TDoA) corresponding to the SL PRS transmission on the resources in the transmission (e.g., an independent SL PRS transmission; or, an SL PRS transmission multiplexed with one or more other side transmissions).

[0340] For example, the can be equal to the ; For example, can be equal to the For example, can be equal to the ; For example, can be equal to the For example, can be equal to the ; For example, can be equal to the For example, can be equal to the ; For example, can be equal to the For example, can be equal to the For example, can be equal to the For example, can be equal to the For example, can be equal to the For example, can be equal to the For example, can be equal to the For example, can be equal to the For example, can be equal to the

[0341] For example, According to the and stated For example, each (source identifier, destination identifier) ​​combination corresponds to a certain propagation type. Accordingly, in determining the and stated After that, we can directly determine the (that is, the equal( )). The correspondence from (source identifier, destination identifier) ​​to the propagation type may be determined in a predefined or (pre)configured manner, or indicated by one protocol layer entity to another protocol layer entity.

[0342] For example, a reference propagation type (e.g., ) determine the Specifically, for example, the following one or more items are used to determine the

[0343] If the Indicates "unicast", then the can be equal to the

[0344] If the Indicates "unicast", then the can be equal to the

[0345] If the Indicates "multicast", then the can be equal to the

[0346] If the Indicates "multicast", then the can be equal to the

[0347] If the indicates "broadcast", then the can be equal to the

[0348] If the indicates "broadcast", then the can be equal to the

[0349] In the first embodiment of the present disclosure, the It can be the

[0350] In the first embodiment of the present disclosure, the It can be the

[0351] Embodiment 1 of the present disclosure may be applicable to (or only applicable to) operations without shared spectrum channel access (eg, operations on licensed spectrum).

[0352] Embodiment 1 of the present disclosure may be applicable to (or only applicable to) operations with shared spectrum channel access (eg, operations on unlicensed spectrum).

[0353] Thus, according to Embodiment 1, the present disclosure provides a method for improving the efficiency of SLPRS transmission requests and responses by utilizing a SL PRS transmission request identifier in the SCI to indicate a SL PRS transmission request, and associating the SL PRS transmission request identifier with a predefined or (pre) configured parameter set related to SL PRS transmission or transmitted in a higher layer protocol.

[0354] Embodiment 2

[0355] Combine the following Figure 2 To illustrate the method executed by the UE in the second embodiment of the present disclosure.

[0356] Figure 2 A flowchart corresponding to the method executed by the UE according to the second embodiment of the present disclosure is shown.

[0357] like Figure 2 As shown, in the second embodiment of the present disclosure, the steps executed by the UE include: step S201, step S203 and optional step S205.

[0358] Specifically, in step S201, one or more transmission opportunity sets are determined.

[0359] Each transmission opportunity in each of the one or more transmission opportunity sets may correspond to a resource, and accordingly, the resource may be referred to as a resource that may be used for the transmission opportunity. Each of the resources may be a time-frequency resource, for example, may correspond to one or more symbols in a time slot in the time domain, and may correspond to one or more RBs (for example, one or more RBs corresponding to one or more subchannels) in the frequency domain.

[0360] Due to the one-to-one correspondence between transmission opportunities and resources, the process of determining the one or more transmission opportunity sets may be considered as the process of determining the corresponding one or more resource sets.

[0361] The one or more transmission opportunity sets may include one or more of the following:

[0362] ● A type 2a transmission opportunity set, for example,

[0363] The corresponding resource collection can be recorded as

[0364] in, Can be an integer greater than or equal to 1; resource Can be used for transmission opportunities Said as well as The corresponding frequency domain resources may be the same.

[0365] ● One or more type 2b transmission opportunity sets, for example, The corresponding resource collections can be recorded as in, Can be an integer greater than or equal to 1, or an integer greater than or equal to 0. and gather and collection Can be recorded as in, Can be an integer greater than or equal to 1; resource Can be used for transmission opportunities Said as well as The corresponding frequency domain resources may be the same.

[0366] The collection The resources and collections in ……,as well as The resources in can belong to the same resource pool (for example, denoted as e1).

[0367] The one or more transmission opportunity sets may be determined for an autonomously selected sidelink grant (or selected sidelink grant). The autonomously selected sidelink grant may be autonomously selected (or "autonomously determined") by the UE, for example, autonomously selected by the MAC entity of the UE. In contrast, other types of sidelink grants may include: a "dynamic sidelink grant" dynamically received on the PDCCH (Physical downlink control channel), and a "configured sidelink grant" semi-statically (pre) configured by the RRC entity. The autonomously selected sidelink grant may be denoted as sg0.

[0368] The sg0 may be created when the UE (specifically, for example, the MAC entity of the UE) is (pre) configured to use sidelink resource allocation mode 2. In sidelink resource allocation mode 2, the UE may use one or more resource selection mechanisms, such as full sensing, partial sensing, random selection, or a combination of more than one resource selection mechanisms. In sidelink resource allocation mode 2, the UE may use one or more resource pools, for example, the UE may select the resource pool e1 from the one or more resource pools to perform transmission for the sg0.

[0369] The sg0 may correspond to a sidewalk process (eg, a sidewalk process in the MAC entity of the UE). Different sidewalk permissions may correspond to different sidewalk processes.

[0370] The sg0 may be created when there is data (or referred to as "sidelink data") to be transmitted (or referred to as "data available") in one or more logical channels.

[0371] The sg0 may be created for the transmission of multiple MAC PDUs (Protocol Data Units). In contrast, another optional sidelink grant may be created for the transmission of a single MAC PDU.

[0372] The number of HARQ (Hybrid Automatic Repeat Request) retransmissions (or simply referred to as "retransmissions") determined for the sg0 can be recorded as ,in, Can be an integer greater than or equal to 0 (for example, It can correspond to the situation where there is no retransmission). It can be applied to each of the multiple MAC PDUs corresponding to the sg0 respectively.

[0373] The resource multiplexing mode of the sidelink transmission corresponding to the sg0 may be related to the type of the resource pool e1. For example, if the resource pool e1 is a shared positioning resource pool, the resource multiplexing mode may be "PSCCH / PSSCH" (that is, the corresponding sidelink transmission is a PSCCH / PSSCH transmission), or "PSCCH / PSSCH / SL PRS" (that is, the corresponding sidelink transmission is a PSCCH / PSSCH / SL PRS transmission); for another example, if the resource pool e1 is a resource pool that can be used for sidelink communication or sidelink discovery but cannot be used for positioning, the resource multiplexing mode may be "PSCCH / PSSCH" (that is, the corresponding sidelink transmission is a PSCCH / PSSCH transmission).

[0374] The collection The resources in can be periodic resources, and the corresponding period can be recorded as For example, the set Any two consecutive resources in and Another example: and ) in the time domain can be time slots (e.g. For example, the resource pool e1 in consecutive time slots).

[0375] Said It can be called a resource reservation period (resource reservation period) or a "resource reservation interval".

[0376] Said Can be equal to C resel , where C resel According to a sidelink resource reselection counter (for example, denoted as ) determines, for example, if the configuration is ,but For example, if the configuration is not , then C resel = 1. According to the Sure.

[0377] The collection According to a reference resource (for example, ) determines, for example, the set The periodic resources in the can be based on the reference resources Specifically, for example, according to Sure ; For example, according to Sure ; For example, according to Sure ……,in, as well as They are as well as The reference resource It may be a resource selected (e.g., randomly selected) from a resource set (e.g., called an "available resource set"). The available resource set may be a resource set determined by a physical layer entity of the UE, or may be an intersection of a preferred resource set received by the UE and a resource set determined by the physical layer entity of the UE, or may be a resource set determined in other ways.

[0378] Said According to the OK. For example,

[0379] right gather The resources in the set may be periodically appearing resources, for example, Any two consecutive resources in and Another example: and ) in the time domain can be time slots (e.g. For example, the resource pool e1 in consecutive time slots).

[0380] right can be equal to the C resel .

[0381] right gather According to a reference resource (for example, ) determine (this may also be referred to as "using the Determine the set ”), for example, the set The periodic resources in the can be based on the reference resources Specifically, for example, according to Sure For example, according to Sure For example, according to Sure in, as well as They are as well as The reference resource It may be a resource selected (eg, randomly selected) from the set of available resources.

[0382] Said It can be set to be a reference resource reservation period set (for example, denoted as RRI ref )

[0383] The RRI ref (Or, the ) may be determined based on one or more factors including one or more of the following:

[0384] ●The type of the resource pool e1 (eg, the resource pool type determined according to the purpose of the resource pool, such as "shared location resource pool"; or "non-location resource pool").

[0385] ●The resource multiplexing method of the side transmission corresponding to the sg0.

[0386] For example, the RRI is determined according to one or more of the following: ref :

[0387] ● If the type 2a side positioning conditions are met, then RRI ref =RRI1.

[0388] ● If the type 2b side positioning conditions are met, then RRI ref =RRI2.

[0389] ● If the type 2b side positioning conditions are met, then RRI ref =RRI1∩RRI3.

[0390] ● If the type 2b side positioning condition is not met, then RRI ref =RRI1.

[0391] ● If the type 2a side positioning condition is not met, then RRI ref =RRI2.

[0392] ● If the type 2a side positioning condition is not met, then RRI ref =RRI1∩RRI3.

[0393] ● If the type 2c side positioning conditions are met, then RRI ref =RRI2.

[0394] The RRI1 may correspond to a predefined or (pre) configured parameter (e.g., a higher layer parameter sl-ResourceReservePeriodList), or may be determined based on one or more predefined or (pre) configured parameters. The resource reservation period value in the RRI1 may be predefined or (pre) configured for sideline communication and / or sideline discovery.

[0395] The RRI2 may correspond to a predefined or (pre) configured parameter (e.g., a higher layer parameter sl-PRSResourceReservePeriodList), or may be determined based on one or more predefined or (pre) configured parameters. The resource reservation period value in the RRI2 may be predefined or (pre) configured for positioning (e.g., side-line positioning).

[0396] The RRI3 may correspond to a predefined or (pre) configured parameter (e.g., a higher layer parameter sl-PRSResourceReservePeriodList2), or may be determined based on one or more predefined or (pre) configured parameters. The resource reservation period value in the RRI3 may be predefined or (pre) configured for positioning (e.g., side positioning).

[0397] The parameter sl-PRSResourceReservePeriodList and the parameter sl-PRSResourceReservePeriodList2 may be two different parameters, or may be the same parameter.

[0398] The type 2a side positioning condition may include one or more of the following (for example, in any combination of "and" or "or"):

[0399] ●The resource pool e1 is not a dedicated positioning resource pool.

[0400] ●The resource pool e1 is a resource pool that can be used for sideline communications.

[0401] ●The resource pool e1 is a resource pool that can be used for sideline discovery.

[0402] ●The resource pool e1 is a resource pool that can be used for sideline communication and / or sideline discovery.

[0403] ● There is no (pre-)configured SL PRS resource in the resource pool e1.

[0404] ●The (pre-)configuration parameters of the resource pool e1 do not include the SL PRS configuration (for example, the size of the comb pattern corresponding to the SL PRS resources; for example, the RE offset corresponding to the SL PRS resources; for example, the number of SLPRS symbols corresponding to the SL PRS resources).

[0405] ●No SL PRS is multiplexed in the side transmission corresponding to the sg0.

[0406] ●The resource multiplexing mode corresponding to the sg0 is "PSCCH / PSSCH".

[0407] The type 2b side positioning condition may include one or more of the following (for example, in any combination of "and" or "or"):

[0408] ●The resource pool e1 is a shared positioning resource pool.

[0409] ●The resource pool e1 is a resource pool that can be used for positioning (eg, side-by-side positioning).

[0410] The resource pool e1 is a resource pool that can be used for positioning (eg, sidewalk positioning) and sidewalk communication.

[0411] The resource pool e1 is a resource pool that can be used for positioning (eg, sidewalk positioning) and sidewalk discovery.

[0412] The resource pool e1 is a resource pool that can be used for positioning (eg, sidewalk positioning), sidewalk communication, and sidewalk discovery.

[0413] ● SL PRS resources are (pre-)configured in the resource pool e1.

[0414] ●The (pre-)configuration parameters of the resource pool e1 include the SL PRS configuration (for example, the size of the comb pattern corresponding to the SL PRS resources; for example, the RE offset corresponding to the SL PRS resources; for example, the number of SL PRS symbols corresponding to the SL PRS resources).

[0415] ●SL PRS is multiplexed in the side transmission corresponding to sg0.

[0416] ●The resource multiplexing mode corresponding to the sg0 is "PSCCH / PSSCH / SL PRS".

[0417] The type 2c side positioning condition may include one or more of the following (for example, in any combination of "and" or "or"):

[0418] ●The resource pool e1 is a dedicated positioning resource pool.

[0419] ● SL PRS resources are (pre-)configured in the resource pool e1.

[0420] ●The (pre-)configuration parameters of the resource pool e1 include the SL PRS configuration (for example, the size of the comb pattern corresponding to the SL PRS resources; for example, the RE offset corresponding to the SL PRS resources; for example, the number of SL PRS symbols corresponding to the SL PRS resources).

[0421] ●The resource reuse mode corresponding to Sg0 is "SL PRS".

[0422] ●The resource multiplexing mode corresponding to the sg0 is "PSCCH / SL PRS".

[0423] In addition, in step S203, a self-selected sidewalk permission is determined according to the one or more transmission opportunity sets.

[0424] For example, part or all of the one or more transmission opportunity sets are determined as (or, considered...as) the sg0; for another example, one or more new transmission opportunity sets obtained by recombining all transmission opportunities included in part or all of the one or more transmission opportunity sets are determined as the Sg0.

[0425] For example, the set Each transmission opportunity in can be used for the initial transmission of a MAC PDU. Accordingly, the set The transmission opportunities in the set can be called "initial transmission opportunities"; Different transmission opportunities may correspond to the initial transmission of different MAC PDUs.

[0426] For example, gather Each transmission opportunity in can be used for retransmission of a MAC PDU, and accordingly, the set The transmission opportunities in the set may be referred to as "retransmission opportunities"; Different transmission opportunities in the MAC PDU may correspond to the retransmission of different MAC PDUs.

[0427] In addition, optionally, in step S205, a PSCCH duration set and a PSSCH duration set corresponding to the self-selected sidewalk grant are determined.

[0428] For example, the PSCCH duration set may be used to transmit the PSCCH corresponding to the self-selected sidewalk grant, and the PSSCH duration set may be used to transmit the PSSCH corresponding to the self-selected sidewalk grant.

[0429] The PSCCH transmission corresponding to each element in the PSCCH duration set may be associated with the PSSCH transmission corresponding to a corresponding (eg, same indexed) element in the PSCCH duration set.

[0430] Embodiment 2 of the present disclosure may be applicable to (or only applicable to) operations without shared spectrum channel access (eg, operations on licensed spectrum).

[0431] Embodiment 2 of the present disclosure may be applicable to (or only applicable to) operations with shared spectrum channel access (eg, operations on unlicensed spectrum).

[0432] Thus, according to the second embodiment, the present disclosure provides a method for improving the accuracy of the resource reservation interval indication by respectively determining the resource reservation interval indicated in the SCI associated with a side transmission (e.g., PSCCH / PSSCH transmission) when multiplexing SL PRS and when not multiplexing SL PRS.

[0433] Embodiment 3

[0434] Combine the following Figure 3 To illustrate the method executed by the UE in the third embodiment of the present disclosure.

[0435] Figure 3 A flowchart corresponding to the method executed by the UE according to the third embodiment of the present disclosure is shown.

[0436] like Figure 3 As shown, in the third embodiment of the present disclosure, the steps executed by the UE include: step S301 and step S303.

[0437] Specifically, in step S301, a TBS (transport block size) of a TB (for example, TB1) is determined. The TBS of TB1 can be denoted as N TBS bits.

[0438] The TB1 may be used to carry data to be transmitted by the UE, for example, data from one or more other layers above the physical layer (eg, MAC layer; for example, RRC layer; for example, PC5-RRC layer; for example, application layer).

[0439] A transmission (for example, initial transmission; for example, retransmission) of the TB1 may be carried in a PSSCH (for example, recorded as PSSCH1). The PSCCH associated with the PSSCH1 may be recorded as PSCCH1.

[0440] The PSSCH1 may be referred to as a PSSCH scheduled by the PSCCH1.

[0441] A portion of the SCI (e.g., recorded as SCI1) associated with the PSSCH1 (e.g., the first stage SCI, e.g., recorded as SCI 1,1st ) can be carried in the PSCCH1, and another part (for example, the second stage SCI, for example, denoted as SCI 1,2nd ) may be carried in the resources allocated for the PSSCH1. The PSSCH1 may be referred to as the PSSCH allocated by the SCI1.

[0442] In the SCI 1,1st The SCI may be indicated in 1,2nd The corresponding second-stage SCI format (for example, fmt 1,2nd ).

[0443] The PSCCH1 and the PSSCH1 may be multiplexed in a time slot (e.g., denoted as) in a sidelink resource pool (e.g., denoted as e2) in a sidelink bandwidth segment (e.g., denoted as b2) in a sidelink carrier (e.g., denoted as c2). ) in a time-frequency resource (for example, denoted as RES1).

[0444] The RES1 may correspond to the time slot One or more symbols in (e.g., one or more consecutive side row symbols).

[0445] The RES1 may correspond to one or more RBs in the resource pool e2 (eg, one or more RBs corresponding to one or more consecutive sub-channels).

[0446] The RES1 may be the SCI1,1st The first of the one or more time-frequency resources indicated in, i.e., the earliest one that occurs.

[0447] Part or all of the PSCCH1, the PSSCH1, an SL PRS, and other reference signals (eg, a sideline CSI RS) may be multiplexed in the RES1 (or sideline transmission on the RES1).

[0448] Under certain conditions (eg, in a shared positioning resource pool), whether to multiplex the SL PRS in the RES1 (or the sidelink transmission on the RES1) may be dynamically determined (eg, dynamically determined by the UE).

[0449] Optionally, if the type 3a sideline positioning condition is met, the SL PRS is multiplexed in the RES1 (or, the sideline transmission on the RES1).

[0450] Optionally, if the type 3a sideline positioning condition is not met, no SL PRS is multiplexed in the RES1 (or, in the sideline transmission on the RES1).

[0451] The type 3a side positioning condition may include one or more of the following (for example, in any combination of "and" or "or"):

[0452] ●The resource pool e2 is a shared positioning resource pool.

[0453] ●The resource pool e2 is a resource pool that can be used for positioning (eg, side-by-side positioning).

[0454] ●The resource pool e2 is a resource pool that can be used for sideline communications.

[0455] ●The resource pool e2 is a resource pool that can be used for sideline discovery.

[0456] ●The resource pool e2 is a resource pool that can be used for sideline communication and sideline discovery.

[0457] ●The resource pool e2 is a resource pool that can be used for positioning (eg, sidewalk positioning) and sidewalk communication.

[0458] ●The resource pool e2 is a resource pool that can be used for positioning (eg, sidewalk positioning) and sidewalk discovery.

[0459] ●The resource pool e2 is a resource pool that can be used for positioning (eg, sidewalk positioning), sidewalk communication, and sidewalk discovery.

[0460] ●SL PRS resources are (pre-)configured in the resource pool e2.

[0461] ●The (pre) configuration parameters of the resource pool e2 include the SL PRS configuration (for example, the size of the comb pattern corresponding to the SL PRS resources; for example, the RE offset corresponding to the SL PRS resources; for example, the number of SL PRS symbols corresponding to the SL PRS resources).

[0462] ●The fmt 1,2nd It is a second-stage SCI format that can be used to decode PSSCH and schedule SL PRS. For example, the fmt 1,2nd It is in SCI format 2-D.

[0463] ● In the SCI1 (for example, the SCI 1,1st ; For example, the SCI 1,2nd ) indicates that SL PRS is multiplexed in the RES1 (or in the side transmission on the RES1), for example, the SCI 1,1st (or the SCI 1,2nd ) is set to "1", indicating that SL PRS is multiplexed in RES1 (or, side transmission on RES1). In contrast, if the value of the "SL PRS indicator" field is set to "0", it means that SL PRS is not multiplexed in RES1 (or, side transmission on RES1).

[0464] The TB1 may be mapped to a transport channel, and the transport channel may be mapped to the PSSCH 1. For example, the transport channel may be a SL-SCH (Sidelink Shared Channel), and accordingly, the TB1 may be referred to as a "SL-SCH TB".

[0465] The TB1 can form a codeword after channel coding (for example, LDPC (Low Density Parity Check) coding) and / or rate matching. A block of complex-valued symbols generated by the codeword after scrambling and / or modulation and / or layer mapping and / or precoding can be mapped to the RE (resource element) corresponding to one or more RBs (for example, one or more RBs corresponding to one or more subchannels) allocated to the PSSCH1, wherein each complex-valued symbol can correspond to one RE.

[0466] The step S301 may be composed of one or more sub-steps. For example, the first sub-step of the step S301 may be used to determine the number of first reference REs (e.g., N′). RE ). The N′ RE It can represent the number of REs allocated to the PSSCH1 in one RB.

[0467] The N′ RE This may be determined based on one or more factors including:

[0468] ●The number of subcarriers in an RB (e.g., ). Can be a predefined constant, for example,

[0469] ●The number of first reference PSSCH symbols (e.g., ).

[0470] ● The first reference cost (e.g., ). It can represent the overhead corresponding to part or all of the sideline reference signals (for example, including part or all of CSI-RS, PT-RS, and SL PRS). Can be expressed RE. It may correspond to a predefined or (pre) configured parameter (e.g., a higher layer parameter sl-X-Overhead), or may be determined based on one or more predefined or (pre) configured parameters, or may be in the SCI1 (e.g., the SCI 1,1st ; For example, the SCI 1,2nd) as indicated.

[0471] ● The overhead corresponding to the PSSCH DMRS (or DM-RS, demodulation reference signal) in the PSSCH1 (for example, denoted as ). Can be expressed RE. It can be determined according to the PSSCH DMRS time pattern list, wherein the PSSCH DMRS time pattern list can correspond to a higher layer parameter sl-PSSCH-DMRS-TimePatternList. The PSSCH DMRS time pattern list can be represented by a set of corresponding PSSCH DMRS symbol numbers. Specifically, for example, the PSSCH DMRS time pattern list and the The relationship can be determined from the following table:

[0472]

[0473]

[0474] ● The second reference cost (e.g., ). It can represent the overhead corresponding to the SL PRS. Can be expressed RE. It may correspond to a predefined or (pre) configured parameter (e.g., a higher layer parameter sl-X-SLPRSOverhead), or may be determined based on one or more predefined or (pre) configured parameters, or may be set in the SCI1 (e.g., the SCI 1,1st ; For example, the SCI 1,2nd ) as indicated.

[0475] Specifically, for example, the N′ RE This can be determined in one of the following ways:

[0476] ●

[0477] ●

[0478] Said This may be determined based on one or more factors including:

[0479] ●The second reference PSSCH symbol number (for example, denoted as ).

[0480] ●The number of symbols corresponding to the overhead associated with the PSFCH (e.g., ). Can be based on and PSFCH Part or all of It can represent the period of the PSFCH resources in the resource pool e2 (for example, It may correspond to a parameter sl-PSFCH-Period); the o PSFCH It can be indicated by the SCI1 (for example, by a "PSFCH overhead indication" field in the SCI1). Specifically, for example, if but Again, if but Again, if And o PSFCH =1, then Again, if And o PSFCH =0, then

[0481] ●The number of first reference SL PRS symbols (e.g., denoted as ). It may represent the number of symbols occupied by the SL PRS (if any) actually multiplexed in the resource RES1 (or the sideline transmission on the RES1); or can be just one for determining the N TBS The number of reference SL PRS symbols, that is, It may not be equal to the number of symbols actually occupied by the SL PRS (if any) multiplexed in the resource RES1 (or the sideline transmission on the RES1). Examples of the value of may include 0 (for example, used to indicate that no SL PRS is multiplexed in the resource RES1 (or, sideline transmission on the resource RES1)), 1, 2, and 4, etc. It can be determined dynamically, for example, In the SCI1 (for example, the SCI 1,1st ; For example, the SCI 1,2nd) Instructions. It can be determined statically or semi-statically, for example, It may correspond to a predefined or (pre) configured parameter (eg, a higher layer parameter sl-SLPRS-NumSyms), or may be determined based on one or more predefined or (pre) configured parameters.

[0482] Specifically, for example, This can be determined in one of the following ways:

[0483] ●

[0484] ●

[0485] Said This may be determined based on one or more factors including:

[0486] ●The time slot The number of side symbols in (e.g., denoted as ). It may correspond to a (pre)configured parameter sl-LengthSymbols in the sidelink bandwidth segment b2.

[0487] ●The number of symbols related to the PSSCH1 and / or the PSCCH1 used for AGC (Automatic Gain Control) and / or transceiver conversion and / or other purposes (for example, denoted as ).For example, One of the symbols may be used for AGC, and the other symbol may be used as a gap symbol corresponding to the transmission and reception switching.

[0488] ●The number of second reference SL PRS symbols (e.g., denoted as ). It may represent the number of symbols occupied by the SL PRS (if any) actually multiplexed in the resource RES1 (or the sideline transmission on the RES1); or can be just one for determining the N TBS The number of reference SL PRS symbols, that is, It may not be equal to the number of symbols actually occupied by the SL PRS (if any) multiplexed in the resource RES1 (or the sideline transmission on the RES1). Examples of the value of may include 0 (for example, used to indicate that no SL PRS is multiplexed in the resource RES1 (or, sideline transmission on the resource RES1)), 1, 2, and 4, etc. It can be determined dynamically, for example, In the SCI1 (for example, the SCI 1，1st ; For example, the SCI 1，2nd ) is indicated. It can be determined statically or semi-statically, for example, It may correspond to a predefined or (pre) configured parameter (eg, a higher layer parameter sl-SLPRS-NumSyms2), or may be determined based on one or more predefined or (pre) configured parameters.

[0489] Specifically, for example, This can be determined in one of the following ways:

[0490] ●

[0491] ●

[0492] Regarding the One or more of the following may apply:

[0493] ●When (or, when and only when) the type 3b side positioning condition is met, the For example, if the type 3b side positioning condition is met, then otherwise

[0494] ● If the type 3b side positioning conditions are not met, then

[0495] ●When (or, when and only when) the type 3c side positioning condition is not met, the For example, if the type 3c side positioning condition is met, then otherwise

[0496] ● If the type 3c side positioning conditions are met, then Regarding the One or more of the following may apply:

[0497] ●When (or, if and only if) the type 3b side positioning condition is met, the For example, if the type 3b side positioning condition is met, then otherwise

[0498] ● If the type 3b side positioning conditions are not met, then

[0499] ●When (or, when and only when) the type 3c side positioning condition is not met, the For example, if the type 3c side positioning condition is met, then otherwise

[0500]

[0501] ● If the type 3c side positioning conditions are met, then Regarding the One or more of the following may apply:

[0502] ●When (or, if and only if) the type 3b side positioning condition is met, the For example, if the type 3b side positioning condition is met, then otherwise

[0503] ● If the type 3b side positioning conditions are not met, then

[0504] ●When (or, when and only when) the type 3c side positioning condition is not met, the For example, if the type 3c side positioning condition is met, then otherwise

[0505] ● If the type 3c side positioning conditions are met, then

[0506] The type 3b side positioning condition may include one or more of the following (for example, in any combination of "and" or "or"):

[0507] ●The resource pool e2 is a shared positioning resource pool.

[0508] ●The resource pool e2 is a resource pool that can be used for positioning (eg, side-by-side positioning).

[0509] ●The resource pool e2 is a resource pool that can be used for positioning (eg, sidewalk positioning) and sidewalk communication.

[0510] ●The resource pool e2 is a resource pool that can be used for positioning (eg, sidewalk positioning) and sidewalk discovery.

[0511] ●The resource pool e2 is a resource pool that can be used for positioning (eg, sidewalk positioning), sidewalk communication, and sidewalk discovery.

[0512] ●SL PRS resources are (pre-)configured in the resource pool e2.

[0513] ●The (pre) configuration parameters of the resource pool e2 include the SL PRS configuration (for example, the size of the comb pattern corresponding to the SL PRS resources; for example, the RE offset corresponding to the SL PRS resources; for example, the number of SL PRS symbols corresponding to the SL PRS resources).

[0514] ●The fmt 1,2nd It is a second-stage SCI format that can be used to decode PSSCH and schedule SL PRS. For example, the fmt 1,2nd It is in SCI format 2-D.

[0515] ● SL PRS is multiplexed in the RES1 (or, in the side transmission on the RES1). For example, in the SCI1 (for example, the SCI 1,1st ; For example, the SCI 1,2nd ) indicates that SL PRS is multiplexed in the RES1 (or, in the side transmission on the RES1). Specifically, for example, the SCI 1,1st (or the SCI 1,2nd ) is set to "1" to indicate that SL PRS is multiplexed in RES1 (or, sideline transmission on RES1).

[0516] The type 3c side positioning condition may include one or more of the following (for example, in any combination of "and" or "or"):

[0517] ●The resource pool e2 is not a dedicated positioning resource pool.

[0518] ●The resource pool e2 is a resource pool that can be used for sideline communications.

[0519] ●The resource pool e2 is a resource pool that can be used for sideline discovery.

[0520] ●The resource pool e2 is a resource pool that can be used for sideline communication and / or sideline discovery.

[0521] ● There are no (pre-)configured SL PRS resources in the resource pool e2.

[0522] ●The (pre-)configuration parameters of the resource pool e2 do not include the SL PRS configuration (for example, the size of the comb pattern corresponding to the SL PRS resources; for example, the RE offset corresponding to the SL PRS resources; for example, the number of SLPRS symbols corresponding to the SL PRS resources).

[0523] ●The fmt 1,2nd is a second-stage SCI format that can be used to decode PSSCH. For example, the fmt 1,2nd is SCI format 2-A; for example, the fmt 1,2nd is SCI format 2-B; for example, the fmt 1,2nd It is SCI format 2-C.

[0524] ●The fmt 1,2nd is not a second-stage SCI format that can be used to decode PSSCH and schedule SL PRS. 1,2nd is SCI format 2-A; for example, the fmt 1,2nd is SCI format 2-B; for example, the fmt 1,2nd It is SCI format 2-C.

[0525] ●The fmt 1,2nd is not a second-stage SCI format that can be used to schedule SL PRS. For example, the fmt 1,2nd is SCI format 2-A; for example, the fmt 1,2nd is SCI format 2-B; for example, the fmt 1,2nd It is SCI format 2-C.

[0526] ● No SL PRS is multiplexed in the RES1 (or, in the sideline transmission on the RES1). 1,1st ; For example, the SCI 1,2nd ) indicates that no SL PRS is multiplexed in the RES1 (or in the side transmission on the RES1). Specifically, for example, the SCI 1,1st (or the SCI 1,2nd ) is set to "0" to indicate that no SL PRS is multiplexed in the RES1 (or, in the sideline transmission on the RES1).

[0527] The second sub-step of step S301 may be used to determine the second reference RE number (e.g., N RE ). RE The total number of REs allocated to the PSSCH1 can be represented.

[0528] The N RE This may be determined based on one or more factors including:

[0529] ●The first reference PRB number (for example, denoted as n PRB ). For example, the n PRB It can represent the number of RBs allocated to the PSSCH1.

[0530] ● The first reference SCI overhead (e.g., denoted as ). For example, the It can represent the number of REs occupied by the PSCCH1 and the corresponding PSCCH DMRS.

[0531] ● The second reference SCI overhead (e.g., denoted as ). For example, the It can be expressed as the SCI 1,2nd The number of coded modulation symbols (coded modulation symbol, or coded symbol) generated by the transmission of It can be the number of coded modulation symbols before performing the corresponding copying operation to the second layer (if the second layer exists). When Y=0, it can be assumed that Y=0, where Y represents the SCI 1,2nd The number of vacant REs in the resource block to which the last coded modulation symbol belongs.

[0532] Specifically, for example, the N RE Can be equal to

[0533] The third sub-step of step S301 may be used to determine an unquantized intermediate variable (e.g., N info ). For example, the N info It can be defined as N info =N RE ·R·Q m υ, where

[0534] ●R may represent the target code rate corresponding to the PSSCH1 (or the TB1). The R may be an MCS index (e.g., denoted as I MCS ) in an MCS table (or MCS index table). The MCS table may be configured by a higher layer protocol, or in the SCI1 (e.g., in the SCI 1,1st The MCS index I MCs It can be in the SCI1 (for example, in the SCI 1,1st in) instructions.

[0535] Q m It can represent the modulation order corresponding to the PSSCH1 (or the TB1). m It can be the MCS index I MCS The corresponding modulation order in the MCS table.

[0536] ●υ may represent the number of layers to which the TB1 (or the codeword corresponding to the TB1) is mapped in spatial multiplexing. For example, υ=1; for another example, υ=2. The υ may be based on predefined and / or configured or preconfigured information and / or the SCI1 (e.g., the SCI 1,1st ) instructions.

[0537] The fourth sub-step of step S301 can be used to determine the N TBS For example, the N is determined according to one or more of the following: TBS :

[0538] If N info ≤3824, then first determine a quantized intermediate variable (e.g., N′) used to represent the number of information bits. info ,For example in ), and according to the N′ info , by looking up a predefined TBS table to determine the N TBS For example, the N TBS Equal to the closest value in the TBS table and not less than the N′ info TBS.

[0539] If N info >3824, then determine a quantized intermediate variable (e.g., N′) for representing the number of information bits. info ,For example in ), and according to the N′ info Determine the N TBS Specifically, for example, if R ≤ 1 / 4, then in For example, if R>1 / 4, and N′ info >8424, then in For example, if R>1 / 4, and N′ info ≤8424, then

[0540] In addition, in step S303, one or more operations related to the TB are performed. For example, the TB1 is transmitted. Specifically, for example, at the physical layer, this can be embodied as transmitting the PSSCH1, the PSCCH1, and corresponding reference signals, such as one or more reference signals multiplexed in the resource (for example, including SL PRS, if any). The transmission of the TB1 can be an initial transmission or a retransmission.

[0541] In the third embodiment of the present disclosure, the execution order of the sub-steps of step S301 may be the first sub-step, the second sub-step, the third sub-step and the fourth sub-step.

[0542] In the third embodiment of the present disclosure, the N′ RE It can only be used to determine the N TBS , and not for other purposes. For example, the N′ RE It may not be equal to the number of REs actually allocated to the PSSCH1 in one PRB.

[0543] In the third embodiment of the present disclosure, the It can only be used to determine the N TBS , and not for other purposes. It may not be equal to the number of symbols actually used for the PSSCH1.

[0544] In the third embodiment of the present disclosure, the It can only be used to determine the N TBS , and not for other purposes. For example, even if the time slot No PSFCH resources are configured in It can still be equal to 3.

[0545] In the third embodiment of the present disclosure, the It can only be used to determine the N TBS , and not for other purposes, such as the It may not be equal to the number of REs actually occupied by the PSSCH DMRS in the PSsCH1.

[0546] In the third embodiment of the present disclosure, the number N of the second reference REs is RE It can only be used to determine the N TBS , and is not used for other purposes. For example, the number of the second reference REs N RE It may not be equal to the number of REs actually allocated to the PSSCH1.

[0547] In the third embodiment of the present disclosure, the n PRB It can only be used to determine the N TBS , and not for other purposes. PRB It may not be equal to the number of RBs actually allocated to the PSSCH1.

[0548] In the third embodiment of the present disclosure, optionally, the n PRB It is called "the number of RBs allocated to the PSSCH1 before rate matching".

[0549] Embodiment 3 of the present disclosure may be applicable to (or only applicable to) operations without shared spectrum channel access (eg, operations on licensed spectrum).

[0550] Embodiment 3 of the present disclosure may be applicable to (or only applicable to) operations with shared spectrum channel access (eg, operations on unlicensed spectrum).

[0551] Thus, according to the third embodiment, the present disclosure provides a method, by determining the size of a TB, in a manner independent of initial transmission and retransmission, for the cases where SL PRS is multiplexed and where SL PRS is not multiplexed in the corresponding side transmission (e.g., PSCCH / PSSCH transmission), respectively, one or more parameters related to SL PRS overhead (e.g., the number of symbols occupied by SL PRS; for example, the number of REs occupied by SL PRS) are determined, thereby ensuring that the TBS determined for the initial transmission and (zero or one or more) retransmissions of the TB are the same, thereby ensuring the performance when receiving the TB.

[0552] Modifications

[0553] Next, use Figure 4 A user equipment as a variation example that can execute the method executed by the user equipment described in detail above in the present disclosure is described.

[0554] Figure 4 is a block diagram showing a user equipment involved in the present disclosure.

[0555] like Figure 4 As shown, the user equipment UE40 includes a processor 401 and a memory 402. The processor 401 may include, for example, a microprocessor, a microcontroller, an embedded processor, etc. The memory 402 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 memories, etc. The memory 402 stores program instructions. When the instructions are executed by the processor 401, the above method performed by the user equipment described in detail in the present disclosure may be executed.

[0556] The method of the present invention and the user equipment involved have been described above in conjunction with the preferred embodiments. It will be appreciated by those skilled in the art that the method shown above is only exemplary, and the embodiments described above can be combined with each other without contradiction. The method of the present invention is not limited to the steps and sequence shown above. The user equipment shown above may include more modules. The various identifiers shown above are only exemplary and not restrictive, and the present invention is not limited to the specific information elements used as examples of these identifiers. Those skilled in the art may make many changes and modifications based on the teachings of the illustrated embodiments.

[0557] 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 addition 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.), and the mathematical expressions, mathematical equations, or mathematical inequalities before and after simplification, transformation, or rewriting can be considered to be equivalent.

[0558] It should be understood that the above embodiments of the present disclosure can be implemented by software, hardware, or a combination of software and hardware. For example, the various components inside the user equipment in the above embodiments can be implemented by 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.

[0559] In the present disclosure, "base station" may refer to a mobile communication data and / or control exchange center with a certain transmission power and a certain coverage area, for example, including functions such as resource allocation scheduling, data reception and transmission, etc. "User equipment" may refer to a user mobile terminal, for example, including mobile phones, notebooks, etc., which can communicate wirelessly with a base station or a micro base station.

[0560] 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, a computer program logic is encoded on the computer-readable medium, 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 in one or more modules, shared databases, etc. Software or firmware or such a 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.

[0561] 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, 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, controller, microcontroller or state machine. The above-mentioned 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 the advancement of semiconductor technology, an advanced technology that can replace the current integrated circuit appears, the present disclosure may also use the integrated circuit obtained using the advanced technology.

[0562] Although the present disclosure has been illustrated above in conjunction with the preferred embodiments of the present disclosure, 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 embodiments, but by the attached claims and their equivalents.

Claims

1. A method performed by a user equipment UE, characterized in that include: receiving side control information SCI, and According to a sideline positioning reference signal SL PRS transmission request identifier indicated in the SCI, determine a propagation type and a destination identifier associated with it and received in higher layer signaling, and The requested SL PRS is transmitted according to the propagation type and the destination identifier.

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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