WO2024032712A1 - Method executed by user equipment, and user equipment - Google Patents

Abstract

The present invention provides a method executed by a user equipment, and a user equipment. The method executed by a user equipment comprises: determining a sidelink positioning reference signal (SL-PRS) resource and sidelink control information (SCI) associated with the SL-PRS resource; and transmitting a SL-PRS and a physical sidelink control channel (PSCCH) carrying the SCI. The number of a lowest-numbered resource block of the PSCCH is equal to [Equation 1], wherein [Equation 2] is the number of a lowest-numbered resource block of the SL-PRS resource, i is the number of the SL-PRS resource, and [Equation 3] is the bandwidth of the SL-PRS resource.

Description

Methods executed by user equipment and user equipment Technical field

The present invention relates to a method executed by user equipment and user equipment.

Background technique

In a wireless communication system, information can be exchanged between different communication nodes. Wireless communications can occur 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 system based on LTE (Long-Term Evolution) wireless access technology, or based on NR (New Radio) Wireless access technology systems. In a communication system based on 3GPP specifications, examples of communication nodes may include UE (User Equipment) and base stations (such as eNB, also such as gNB). The wireless link (radio link) from the base station to the UE can be called the downlink (DL, downlink), and the wireless link from the UE to the base station can be called the uplink (UL, uplink). The wireless link between UEs The path can be called a sidelink (SL, sidelink). The interface for wireless transmission and/or reception between the base station and the UE may be called a Uu interface (for example, an NR-Uu interface based on NR; another example, an LTE-Uu interface based on LTE). The interface for wireless transmission and/or reception between UEs may be called the PC5 interface.

One or more positioning technologies may be supported in a wireless communication system. When positioning the UE, the location information of the UE may be calculated or estimated based on the measurement of the downlink signal, and/or the measurement of the uplink signal, and/or the measurement of the sidelink signal. In order to support the authorized frequency Communication on the spectrum and/or unlicensed spectrum, and/or positioning of the UE on the licensed spectrum and/or unlicensed spectrum, requires solving a series of problems, such as channel access (channel access) mechanism; another example, The structure of physical layer channels and/or signals; another example, physical layer processes (such as synchronization processes, and feedback and/or determination mechanisms); another example, higher-layer signaling processes; another example, resource allocation and/or Management; another example, coexistence between different systems.

Prior technical documents

non-patent literature

Non-patent document 1: RP-152293, New WI proposal: Support for V2V services based on LTE sidelink, 3GPP TSG RAN Meeting#70

Non-patent document 2: RP-170798, New WID on 3GPP V2X Phase 2, 3GPP TSG RAN Meeting#75

Non-patent document 3: RP-170855, New WID on New Radio Access Technology, 3GPP TSG RAN Meeting#75

Non-patent document 4: RP-190766, New WID on 5G V2X with NR sidelink, 3GPP TSG RAN Meeting#83

Non-patent document 5: RP-201385, WID revision: NR sidelink enhancement, 3GPP TSG RAN Meeting#88e

Non-patent document 6: RP-213678, New WID on NR side link evolution, 3GPPTSG RAN Meeting#94e

Non-patent document 7: RP-210903, Revised WID on NR Positioning Enhancements, 3GPP TSG RAN Meeting#91e

Non-patent document 8: RP-213588, Revised SID on Study on expanded and improved NR positioning, 3GPP TSG RAN Meeting#94e

Contents of the invention

In order to solve at least part of the above problems, the present invention provides a method performed by user equipment and user equipment, by associating one or more time domain and/or frequency domain parameters of an SL-PRS resource to the corresponding The location of the frequency domain resource of the PSCCH avoids blind detection of the location of the frequency domain resource of the PSCCH and reduces the complexity of receiving the PSCCH.

According to the present invention, a method performed by user equipment is proposed, which is characterized by including: determining a sidelink positioning reference signal SL-PRS resource and its associated sidelink control information SCI; and transmitting the SL-PRS, and The physical sidelink control channel PSCCH carrying the SCI. Wherein, the number of the lowest numbered resource block of the PSCCH is equal to in is the number of the lowest numbered resource block of the SL-PRS resource, i is the number of the SL-PRS resource, is the bandwidth of the SL-PRS resource.

In addition, according to the present invention, 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.

Therefore, the present invention provides a method by associating one or more time domain and/or frequency domain parameters of an SL-PRS resource to the location of the frequency domain resource of the corresponding PSCCH, thereby avoiding interference with the frequency domain of the PSCCH. Blind detection of the location of domain resources reduces the complexity of receiving the PSCCH.

Description of drawings

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

Figure 1 shows a flow chart corresponding to a method executed by user equipment according to Embodiment 1 of the present invention.

Figure 2 shows a flow chart corresponding to a method executed by user equipment according to Embodiment 2 of the present invention.

Figure 3 shows a flow chart corresponding to a method executed by user equipment according to Embodiment 3 of the present invention.

Figure 4 shows a flow chart corresponding to a method executed by user equipment according to Embodiment 4 of the present invention.

Figure 5 shows a flow chart corresponding to a method executed by user equipment according to Embodiment 5 of the present invention.

Figure 6 shows a flow chart corresponding to a method executed by user equipment according to Embodiment 6 of the present invention.

Figure 7 shows a block diagram of a communication node involved in the present invention.

Detailed ways

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

The following is NR (or 5G, or 5GNR) wireless communication formulated by 3GPP. The system specification and its subsequent evolution versions (eg, 5G Advanced) serve as example application environments to specifically describe multiple embodiments according to the present invention. However, it should be pointed out that the present invention is not limited to the following embodiments, but can be applied 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, long-term evolution), LTE-Advanced, LTE-Advanced Pro, etc.

The terminology given in the present invention may use different naming methods in different wireless communication systems, but the unified terminology is used in the present invention, and when applied to a specific system, it can be replaced by the terminology used in the corresponding system.

In all examples and implementations of the invention, unless otherwise specified:

●A "node" (or "communication node") can be a UE, or a network node (such as a base station, or a positioning server).

●The "base station" can be an eNB (E-UTRAN NodeB, E-UTRAN Node B, where E-UTRAN stands for Evolved Universal Terrestrial Radio Access Network, Evolved Unified Terrestrial Radio Access Network), or a gNB (provided to UE NR user plane and control plane protocol termination node, and connected to the 5G core network through the NG interface), or an ng-eNB (providing E-UTRA user plane and control plane protocol termination to the UE, and connected to the 5G through the NG interface The node of the core network, where E-UTRA stands for Evolved Universal Terrestrial Radio Access, Evolved Unified Terrestrial Radio Access).

●"Location server" can refer to E-SMLC (Enhanced Serving Mobile Location Centre, enhanced service mobile location center), or SLP (SUPL Location Platform, SUPL location platform, where SUPL refers to Secure UserPlane Location, security Full user plane location), or LMF (Location Management Function, location management function), or other nodes that implement similar functions.

●“Higher layer(s), or upper layer(s)) may refer to one or more protocols above a reference protocol layer or reference protocol sub-layer in a specific protocol stack. layer or protocol sublayer. For example, if the reference protocol layer or reference protocol sub-layer is the physical layer, the "higher layer" may refer to the MAC (Medium Access Control, medium access control) layer, and/or RLC (Radio Link Control, wireless link control protocol) ) layer, and/or PDCP (Packet Data Convergence Protocol, Packet Data Convergence Protocol) layer, and/or PC5 RRC (Radio Resource Control,

Radio Resource Control) layer, and/or PC5-S layer, and/or RRC layer, and/or other protocol layers or protocol sublayers. Unless otherwise specified, the reference protocol layer or reference protocol sublayer is the physical layer.

● "Configure" may refer to that in a communication node (such as UE), one protocol layer (such as RRC layer) entity provides configuration information to another protocol layer (such as physical layer) entity.

● "Configuration" may refer to a protocol layer (such as RRC layer) entity of a communication node (such as a base station) providing configuration information to a peer protocol layer entity of another communication node (such as a UE) (such as transmitting RRC information from the base station to the UE). order, which includes the configuration information; another example is transmitting PC5-RRC signaling from UE-A to UE-B, which includes the configuration information).

●"Pre-configure" can refer to presetting the corresponding configuration information in a specific storage location in a communication node (such as UE), or placing the corresponding configuration information Preset in a specific storage location that the UE can access.

● "Configuration" can include "preconfiguration".

●Constant T _c can be defined as: T _c =1/(Δf _max ·N _f ), where Δf _max =480·10 ³ Hz, N _f =4096.

●The constant κ can be defined as: κ=T _s /T _c =64, where T _s =1/(Δf _ref ·N _{f, ref} ), Δf _ref =15·10 ³ Hz, N _{f, ref} =2048.

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

●"Symbol" refers to OFDM (Orthogonal Frequency Division Multiplexing, Orthogonal Frequency Division Multiplexing) symbol.

● It can represent the number of time slots in each subframe.

● It can represent the number of symbols in each time slot.

●A resource can correspond to one or more of the following:

■One or more parameters in 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.

■One or more parameters in the frequency domain (frequency-domain). For example, the starting sub-channel of the resource; another example, the starting RB (resource block, resource block) of the resource; another example, the starting sub-carrier of the resource; another example, the sub-carrier occupied by the resource The number of channels; another example, the number of RBs occupied by the resource; another example, the number of subcarriers occupied by the resource.

■One or more parameters on the code-domain. For example, the cyclic shift (cyclic shift) value or the corresponding cyclic shift index corresponding to the resource; another example, the cyclic shift pair (cyclic shift pair) value or the corresponding cyclic shift pair index corresponding to the resource.

■One or more parameters on the spatial-domain. For example, among the layers corresponding to the resources, one "layer" may refer to a MIMO (Multiple Input Multiple Output, Multiple Input Multiple Output) layer.

●"RB" can refer to VRB (virtual resource block, virtual resource block), or PRB (physical resource block, physical resource block), or CRB (common resource block, public resource block), or IRB (Interlaced Resource Block, interlaced resource) piece).

●"Number" and "index" are interchangeable. For example, the number of an RB may also be called the index of the RB. For another example, "number one RB as 0" can also be expressed as "index one RB as 0".

●An RB represented by a CRB number can also be represented by a corresponding PRB number. vice versa.

●The numbering of elements in a sequence (or array, or list, or ordered set, etc.) can start from 0. For example, the first RB of an RB set may be called RB 0 of the RB set.

●An object (such as a subcarrier, a time slot, a cyclic shift, etc.) can be represented by its index, for example, a CRB numbered 0 can be called CRB 0.

●If an object is mentioned without specifying a corresponding quantity, the quantity of the object may be One, or multiple. For example, in "perform transmission on a channel", the "transmission(s)" may correspond to one transmission, or multiple transmissions.

●Δ(x ₁ , x ₂ ) can represent the offset between x ₁ and x ₂ (offset between x ₁ and x ₂ ), where the x ₁ and the x ₂ can be two parameters that can be compared (or variable), or two possible values of a parameter (or variable) (for example, the x ₁ and the x ₂ can be two time slots, or two subframes, or two frames, or two sub carrier, or two RBs, or two sub-channels, etc.).

●Δ(x ₁ , x ₂ ) can be equal to x ₂ -x ₁ . For example, note the CRB set in and Then Δ(x ₁ , x ₂ ) can be equal to

●Δ(x ₁ , x ₂ ) can be equal to idx(x ₂ )-idx(x ₁ ), where idx(x ₁ ) and idx(x ₂ ) are the corresponding elements of x ₁ and x ₂ in the same set respectively. index of. For example, note the CRB set in and Then Δ(x ₁ , x ₂ ) can be equal to 3-0=3.

●The "offset between x ₁ and x ₂ " can also be called the offset of x ₂ with respect to x ₁ (offset of x ₂ with respect to x ₁ , or offset of x ₂ relative to x ₁ ).

●"The offset between x ₁ and x ₂ " can also be called the offset from x ₁ to x ₂ (offset from x ₁ to x ₂ ).

●Where applicable, if Δ(x ₁ , x ₂ )=D, x ₂ can be recorded as x ₂ =ADD(x ₁ , D).

●Where applicable, if Δ(x ₁ , x ₂ )=D, x ₁ can be recorded as x ₁ = SUBTRACT(x ₂ , D).

• The offset between two subcarriers may be the offset between the center frequencies of the two subcarriers.

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

■r is the remainder (remainder).

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

■0≤r<|N|.

●A "SL time slot" can refer to a time slot configured or pre-configured with SL resources. Wherein, the "SL resources" may or may not include resources used for specific purposes, where the "resources used for specific purposes" may be resources used for synchronization procedures (for example, used for transmitting S-SS/PSBCH ( S-SS/Physical Sidelink Broadcast CHannel, or Sidelink-Synchronization Signal/Physical Sidelink Broadcast CHannel) block resource).

●A "SL time slot" can refer to a time slot belonging to a certain SL resource pool.

●A "physical time slot" may refer to a time slot in a physical time slot set, wherein the physical time slot set may be a continuous period of time (for example, a frame period with a duration of 1024 frames) All time slots; the physical time slots in the physical time slot set may be numbered as 0, 1,... in chronological order.

●A "logical time slot" can be a time slot in a time slot set of an SL resource pool, where the time slot set can be a continuous period of time (for example, a frame period with a duration of 1024 frames) All time slots belonging to the SL resource pool in The logical time slots in the time slot set can be numbered 0, 1,... in chronological order.

●The set of SL symbols in an SL slot can be recorded as in respectively represent the index of the corresponding symbol in the time slot, where in is the index of the first SL symbol in the slot (for example, configured through the parameter sl-StartSymbol), is the number of SL symbols in the time slot (for example, configured through the parameter sl-LengthSymbols).

●A multiplexing of PSSCH (Physical Sidelink Shared Channel, Physical Sidelink Shared Channel) and its associated PSCCH (Physical Sidelink Control Channel, Physical Sidelink Control Channel) in the same resource (for example, several sub-slots in an SL time slot) The SL transmission in the channel) can be called a "PSCCH/PSSCH transmission".

●In the time domain, a "frame" (frame, also known as "radio frame", radio frame) can be a system frame (system frame) or a direct frame (direct frame). A frame number period (for example, denoted as _TFNP ) may be a predefined or configured or preconfigured value, for example, _TFNP = 1024 frames. The duration of each frame may be T _f =10 milliseconds, which may include 10 subframes, where the duration of each subframe is T _sf =1 millisecond. Each subframe may contain time slots, for example, The index of a timeslot in a subframe can be recorded as The index of a time slot in the frame can be recorded as in, can be equal to 10·2 ^μ . The time slot index in a frame number period can be recorded as in can be equal to (For example, 1024·(10·2 ^μ )).

● "Target UE" (target UE) may refer to the UE being positioned (or "the device being positioned").

● "Anchor UE" may refer to a UE that provides support for the positioning of the target UE (or is called "a device that provides support for the positioning of the target UE").

●A SL ID (sidelink identity, sidelink ID, SL identifier) can be a layer 1 SL ID or a layer 2 SL ID.

●“SCI” (Sidelink Control Information) can refer to the first stage ( ^1st -stage) SCI, and/or the second stage ( ^2nd -stage) SCI.

An SL transmission (such as a PSCCH/PSSCH transmission) can be associated with a pair of SL IDs: a "Source ID" and a "Destination ID", where the "Source ID" can be used for Identifies the UE that performs the SL transmission (for example, the UE may be called the TXUE of the SL transmission), correspondingly, the "source ID" may be called an SL ID of the TXUE; the "destination ID" (or the pair of SL IDs) may correspond to one or more UEs receiving the SL transmission (for example, each such UE may be referred to as an RX UE of the SL transmission); the "source ID" and/or the "destination ID" may be indicated in the control information associated with the SL transmission (eg, control information in the SCI and/or MAC header). The pair of SL IDs may be associated with a cast type. For example, when the cast type is broadcast or multicast, the "destination ID" (or the pair of SL IDs) corresponds to one or more RX UE; For another example, when the propagation type is unicast, the "destination ID" (or the pair of SL IDs) corresponds to one RX UE, and the "destination ID" is the Describes an SL ID of the RX UE.

A UE can have one or multiple SL IDs. For example, the "source ID" associated with SL transmissions performed by one UE at different times (or when communicating with different other UEs; or during SL communications for different purposes) may be different. Specifically, for example, a UE may have an SL ID dedicated to identifying itself in positioning-related SL transmissions and/or receiving.

A certain SL ID of a UE can be generated autonomously by the UE, or allocated by another communication node (such as a base station; also such as a positioning server).

The "destination ID" associated with a multicast transmission or broadcast transmission may be determined in a predefined or configured or preconfigured manner, or generated by the TX UE of said multicast transmission or broadcast transmission, or by a network node (e.g. Base station; also such as positioning server) distribution. All RXUEs of a multicast transmission and, optionally, the TXUEs of the multicast transmission belong to the same "group" (or "multicast group"). Correspondingly, the "destination" of the multicast transmission ID" may be referred to as the SL ID of the "group".

In 5G, the transmission of positioning-related reference signals based on the Uu interface (alternatively referred to as "DL and/or UL based") and/or based on the PC5 interface (alternatively referred to as "SL based") and/or the transmission of positioning-related reference signals may be supported. measurement of the reference signal and/or transmission and/or reception of associated measurement reports. In SL-related positioning operations, some or all anchor UEs that provide support for positioning of a target UE and, optionally, the target UE, may form a "positioning UE group" (positioning UE group). The "positioning UE group" may be associated with a SL ID (for example, the SL ID called the "positioning UE group"). For example, to transmit information to all anchor UEs in the "locating UE group", the target UE may perform a multicast SL transmission with its associated "destination UE group" ID" is the SL ID of the "positioning UE group". In a "positioning UE group" containing N anchor UEs, each anchor UE can correspond to a group member ID (group member ID). For example, each anchor UE can correspond to a group member ID. The value of each group member ID can be set to 1, 2,..., N in sequence according to certain rules (for example, in ascending order of the SL IDs of the UEs in the group). Optionally, a "positioning UE group" The target UE in can correspond to a group member ID with a value of 0.

The reference signal related to positioning on the SL can be called SL-PRS (Sidelink Positioning Reference Signal, sidelink positioning reference signal). Frequency resources used for SL-PRS can be configured in a positioning frequency layer (positioning frequency layer), or an SL carrier, or an SL BWP (Sidelink Bandwidth Part), or an SL resource pool.

A "SL-PRS resource" can be defined as the time-domain resources (time-domain resources) and/or frequency-domain resources (frequency-domain resources) corresponding to (or occupied by) an SL-PRS transmission and /or code-domain resources and/or spatial-domain resources. Optionally, sometimes, multiple SL-PRS resources that appear periodically and are defined in the above manner can be collectively referred to as "a SL-PRS resource" (or, as a multi-instance SL-PRS resource, a multi- instance SL-PRS resource). Each SL-PRS resource can be multiplexed in a "SL-PRS resource grid", where the "SL-PRS resource grid" can correspond to the time domain symbols (e.g. consecutive symbols) and in the frequency domain RB (for example consecutive RBs). described symbols can be in the same time slot, and their numbers in the time slot can be recorded as described The CRB numbers of each RB can be recorded as (The corresponding PRB numbers can be recorded as ); described The bandwidth corresponding to one RB can be called the bandwidth of an SL-PRS resource, or the bandwidth of an SL-PRS transmission, or the "SL-PRS bandwidth". described (or ) may be a predefined or configured or preconfigured value, or determined based on one or more predefined or configured or preconfigured values. described Each symbol can correspond to a "SL-PRS occasion" (SL-PRS occasion, or SL-PRS transmission occasion) in the time domain. Optionally, in addition to the In addition to symbols, an SL-PRS opportunity can additionally contain a symbol for AGC (Automatic Gain Control, automatic gain control) (such as the symbol ), and/or a gap symbol for transmit and receive conversion (e.g. symbol ).

in the stated Among the SL-PRS resources, the set of RE (Resource Element, resource element) occupied by each SL-PRS resource can correspond to a unique resource with a size of A comb-like pattern, for example called pattern. Specifically, for example, Correspondingly,

●In symbols , the first SL-PRS resource occupies subcarriers 0, 2, 4, 6, 8, 10 in each RB in "SL-PRS Bandwidth", and the second SL-PRS resource occupies "SL-PRS Bandwidth""Subcarriers 1, 3, 5, 7, 9, 11 in each RB.

●In symbols , the first SL-PRS resource occupies subcarriers 1, 3, 5, 7, 9, 11 in each RB in "SL-PRS Bandwidth", and the second SL-PRS resource occupies "SL-PRS Bandwidth""Subcarriers 0, 2, 4, 6, 8, 10 in each RB.

in the stated Among the SL-PRS resources, each SL-PRS resource is in the symbol middle The subcarrier number of the smallest numbered subcarrier in the corresponding RB may be called the "RE offset" of the SL-PRS resource. For example, in the above example, the "RE offset" of the first SL-PRS resource is 0, and the "RE offset" of the second SL-PRS resource is 1. described Each SL-PRS resource can be indexed in ascending order of "RE offset", for example, record the SL-PRS resource The "RE offset" is but

in the stated Among the SL-PRS resources, the SL-PRS resource Each occupied RE can be expressed as (k, l) _{p, μ} , where p and μ are respectively the antenna port and subcarrier spacing configuration corresponding to the corresponding SL-PRS transmission; l is the number of the symbol corresponding to the RE, k is the number of the subcarrier corresponding to the RE, k can be the same as and / or Relevantly, for example, k can be expressed as

The reference point corresponding to k=0 may be the corresponding positioning frequency layer or SL carrier or SL BWP or "Point A" (for example, subcarrier 0 of CRB 0) corresponding to the SL resource pool, or it may be The subcarrier 0 of the lowest numbered RB of the locating frequency layer or SL carrier or SL BWP; m can be the index of the point mapped to the RE in the corresponding SL-PRS sequence; k' can be a and/or l and/or and / or Relevant predefined or configured or preconfigured values.

Optionally, in the Among the SL-PRS resources, for An SL-PRS transmission on SL-PRS resource i (e.g. denoted as ) may be associated with one or more "SL-PRS control information", wherein the "SL-PRS control information" may correspond to information indicated in the physical layer of an SL transmission (for example, information indicated in SCI), and/ Or information indicated in a higher layer (such as information indicated in the PC5-RRC layer; or information indicated in the MAC header information indicated; also such as information indicated in MAC CE (MAC Control Element, MAC Control Element)). Part or all of the "SL-PRS control information" may be carried and transmitted on a physical layer channel (for example, denoted as ), correspondingly, the can be called the (or the physical layer channel transmission associated with the SL-PRS resource i). in,

●The SCI may be called the SL-PRS resource i (or the or stated ) associated SCI.

●The physical layer channel transmission may be a PSCCH transmission, or a PSSCH transmission, or a PSCCH/PSSCH transmission, or a PSFCH transmission, or another physical layer channel transmission.

●Described and stated Can correspond to resources in the same SL resource pool.

●In the time domain, the and stated can be in the same time slot, for example, the can correspond to slave symbols started consecutive symbols, where, symbol and symbol The sign offset between Right now in, or Can be a predefined or configured or preconfigured value, or determined based on one or more predefined or configured or preconfigured values; Can be a predefined or configured or preconfigured value, or determined based on one or more predefined or configured or preconfigured values. Specifically, for example, Another example, Another example, Another example, Another example,

●In the frequency domain, the Can correspond to the "SL-PRS Resource Grid" part or all of an RB, for example, the Can correspond to CRB numbers from (The corresponding PRB number is ) starts from RB consecutive RBs, where, Can be a predefined or configured or preconfigured value, or determined based on one or more predefined or configured or preconfigured values; (or ) may be related to one or more time domain parameters and/or frequency domain parameters of the SL-PRS resource i (such as the "RE offset" of the SL-PRS resource i As another example, the lowest numbered RB of the "SL-PRS resource grid" (with or means)) related. Specifically, for example, Another example, Another example, Another example, By adding the The location of the frequency domain resource is associated with one or more time domain and/or frequency domain parameters of the SL-PRS resource i, which can avoid the blind detection of the location of frequency domain resources, thereby reducing reception of the complexity.

In the frequency domain, in a positioning frequency layer or SL carrier or SL BWP or SL resource pool, it can contain SL-PRS bandwidth, where, the The SL-PRS bandwidths can be indexed from low to high frequency as Correspondingly, each SL-PRS opportunity in the time domain may correspond to the positioning frequency layer or SL carrier or SL BWP or SL resource pool. A "SL-PRS resource grid". Can be a predefined or configured or preconfigured value, or determined based on one or more predefined or configured or preconfigured values. For example,

In the time domain, resources for SL-PRS may appear periodically. For example, in a time slots (e.g. physical time slot; another example Within the "SL-PRS resource period" of logical time slots), there can be SL-PRS slots (e.g. corresponding to The time slot numbers within the SL-PRS resource cycle are recorded in chronological order as ), where, the An SL-PRS slot can be physical time slot, or logical time slot. right SL-PRS time slot There may be SL-PRS opportunities, for example, the index in chronological order is in, and Any one of may be a predefined or configured or preconfigured value, or determined based on one or more predefined or configured or preconfigured values. For example, Another example, logical time slots (for example, this may correspond to the situation where SL-PRS resources are configured in each time slot in an SL resource pool). right can be equal to or equal to in and Any one of may be a predefined or configured or preconfigured value, or determined based on one or more predefined or configured or preconfigured values.

The SL-PRS resource period can be numbered 0, 1,... in chronological order within a frame period with a duration of 1024 frames. As a special case, when When there are physical time slots (or logical time slots), the SL-PRS resource cycle numbers 0, 1,... can correspond to the physical time slot (or logical time slot) numbers 0, 1,... respectively.

In a positioning frequency layer or SL carrier or SL BWP or SL resource pool, all the data within a period of time (for example, several physical time slots; another example, several logical time slots; another example, one SL-PRS resource cycle) SL-PRS resources can be indexed by one of the following:

●First increment the "RE offset", then increment the index of the SL-PRS bandwidth, then increment the SL-PRS opportunity in the time slot, and then increment the SL-PRS time slot.

●First increment the "RE offset", then increment the SL-PRS timing in the time slot, and then increment the SL- The index of the PRS bandwidth, and then increment the SL-PRS slot.

●First increment the "RE offset", then increment the SL-PRS opportunity in the time slot, then increment the SL-PRS time slot, and then increment the index of the SL-PRS bandwidth.

●First increment the SL-PRS opportunity in the time slot, then increment the SL-PRS time slot, then increment the "RE offset", and then increment the index of the SL-PRS bandwidth.

●First increase the SL-PRS opportunity in the time slot, then increase the "RE offset", then increase the SL-PRS time slot, and then increase the index of the SL-PRS bandwidth.

●First increment the SL-PRS opportunity in the time slot, then increment the "RE offset", then increase the index of the SL-PRS bandwidth, and then increment the SL-PRS time slot.

In a positioning frequency layer or SL carrier or SL BWP or SL resource pool, all the data within a period of time (for example, several physical time slots; another example, several logical time slots; another example, one SL-PRS resource cycle) The "SL-PRS Resource Grid" can be indexed by one of the following:

●First increment the index of SL-PRS bandwidth, then increment the SL-PRS opportunity in the time slot, and then increment the SL-PRS time slot.

●First increment the SL-PRS bandwidth index, then increment the SL-PRS time slot, and then increment the SL-PRS opportunity in the time slot.

●First increase the SL-PRS opportunity in the time slot, then increase the SL-PRS time slot, and then increase the index of the SL-PRS bandwidth.

●First increment the SL-PRS opportunity in the time slot, then increment the SL-PRS bandwidth index, and then increment the SL-PRS time slot.

●First increment the SL-PRS time slot, then increment the SL-PRS opportunity in the time slot, and then increment the SL-PRS bandwidth index.

●First increment the SL-PRS time slot, then increment the SL-PRS bandwidth index, and then increment the SL-PRS opportunity in the time slot.

and / or and / or Under special circumstances, the description of the indexing method for SL-PRS resources or "SL-PRS Resource Grid" can be adjusted accordingly. For example when When , because there is only one SL-PRS bandwidth index, it does not make any difference whether to perform the step of "incrementing the index of SL-PRS bandwidth", that is, the step of "incrementing the index of SL-PRS bandwidth" can be removed; and if time, because there is only one SL-PRS opportunity in each time slot, it does not make any difference whether to perform the step of "incrementing the SL-PRS opportunity in the time slot", that is, the step of "incrementing the SL-PRS opportunity in the time slot" can be removed ; also like when And when the "a period of time" is an SL-PRS resource period, because there is only one time slot in each SL-PRS resource period, there is no difference whether to perform the step of "increment SL-PRS time slot", that is, "increment SL -PRS time slot" this step can be removed.

In the SL-PRS resource reservation and/or allocation and/or selection process, the SL-PRS resource may be indicated by an index of the SL-PRS resource. For example, one or more indexes (e.g., respectively denoted as in ),in Can represent the SL-PRS resource cycle (or physical time slot Or logical time defense ) SL-PRS resource index in Among them, if And g ₁ < g ₂ , then and The relationship can be It may be indicated in the SCI, or it may be a predefined or configured or preconfigured value, or it may be determined based on one or more predefined or configured or preconfigured values. determined, for example Another example described This may be indicated explicitly (e.g., by a field in the SCI), or implicitly (e.g., the SCI is the The SCI associated with the corresponding SL-PRS resource; another example, the physical layer channel carrying the SCI is the The physical layer channel associated with the corresponding SL-PRS resource).

In the SL-PRS resource reservation and/or allocation and/or selection process, an index of the "SL-PRS resource grid" and a "RE offset" within the corresponding "SL-PRS resource grid" can be used. Indicates a SL-PRS resource.

In the SL-PRS resource reservation and/or allocation and/or selection process, the TX UE of an SL-PRS resource may be determined in one or more ways. For example, in a "SL-PRS resource grid", if SL-PRS resource i If the TX UE of the associated physical layer channel is UE-A, then the TX UE of the SL-PRS resource i is also the UE-A; in addition, the control information carried by the UE-A in the physical layer channel Indicates one or more additional SL-PRS resources, and/or actions performed by one or more RX UEs of the physical layer channel (for example, if the action is "SL-PRS transmission", then the The TX UE of one or more additional SL-PRS resources is one or more RX UEs of the physical layer channel; for another example, if the action is "SL-PRS measurement", then the one or more other The TX UE of the SL-PRS resource is the UE-A).

An SL resource pool configured with SL-PRS resources can be called a "SL-PRS resource pool".

The SL-PRS resources may be multiplexed in an SL resource pool with resources occupied by other SL transmissions (such as PSCCH transmission and/or PSSCH transmission carrying application layer data, and/or corresponding PSFCH transmission). For example, one SL-PRS resource can correspond to one PSCCH/PSSCH transmission one or more symbols in the slot. For another example, all REs corresponding to one SL-PRS resource may be located in one time-frequency resource allocated for one PSCCH/PSSCH transmission.

The SL-PRS resources may be configured in a SL resource pool (for example, called a "dedicated SL-PRS resource pool") specifically used for transmitting SL-PRS and/or corresponding control information and/or corresponding measurement reports. Optionally, a "dedicated SL-PRS resource pool" does not support PSCCH transmission and/or PSSCH transmission and/or PSFCH transmission and/or other SL transmission for non-positioning purposes.

A "SL-PRS resource pool" that is not a "dedicated SL-PRS resource pool" may be called a "non-dedicated SL-PRS resource pool".

In a "SL-PRS resource grid", in the SL-PRS resource i The SL-PRS sequence r(m) corresponding to an SL-PRS transmission on can be a sequence based on a pseudo-random sequence c(n), for example

in,
c(n)=(x ₁ (n+N _c )+x ₂ (n+N _c ))mod 2
x ₁ (n+31)=(x ₁ (n+3)+x ₁ (n))mod 2
x ₂ (n+31)＝(x ₂ (n+3)+x ₂ (n+2)+x ₂ (n+1)+x ₂ (n))mod 2

Where N _c =1600; x ₁ (n) can be initialized as x ₁ (0) = 0, x _{1 (} 1) = x ₁ (2) =... = x ₁ (30) = 0; Initialization can be completed through an initial value c _init , where

c _init may be related to one or more time domain and/or frequency domain parameters of the SL-PRS resource i, such as the number of the time slot in which the SL-PRS resource i is located in the corresponding frame. Another example is the number of symbols in each time slot. Another example is the "RE offset" of the SL-PRS resource i As another example, the lowest numbered RB of the "SL-PRS resource grid" (with or express). For example, for the symbol l, c _init can be expressed as

in, Is a "SL-PRS sequence identifier" (SL-PRS sequence ID).

described It may be related to one or more time domain and/or frequency domain parameters of the SL-PRS resource i, such as the number of the time slot in which the SL-PRS resource i is located in the corresponding frame. Another example is the number of symbols in each time slot. Another example is the "RE offset" of the SL-PRS resource i As another example, the lowest numbered RB of the "SL-PRS resource grid" (with or express). For example, Another example, Another example, Another example, Another example, in, Indicates the number of subcarriers in each RB, for example

One or more measurements can be performed on the SL-PRS resource. For example, the measurement may be an RSRP (Reference Signal Received Power) measurement, and the corresponding measurement quantity may be called SL-PRS RSRP. For another example, the measurement may be an RSTD (Reference Signal Time Difference) measurement, and the corresponding measurement quantity may be called SL-RSTD. For another example, the measurement may be a reception-transmission time difference (Rx-Txtime difference) measurement, and the corresponding measurement quantity may be called the UE reception-transmission time difference. Each measurement quantity can correspond to one or more SL-PRS resources.

In order to implement the transmission of reference signals related to positioning and/or the measurement of the reference signals and/or the transmission and/or reception of related measurement reports, one or more "SL positioning procedures" may be defined. For example, the first SL positioning procedure may be used to establish and/or confirm a "positioning UE group"; the second SL positioning procedure may enable a target UE to request one or more other UEs (e.g., determined as "anchor UEs" A UE (e.g. a UE not determined as an "anchor UE") performs measurements on one or more SL-PRS resources and sends a corresponding measurement report (e.g., sends the measurement report to the target UE, or e.g., to the target UE). A network node sends the measurement report); the third SL positioning process can enable a target UE to request one or more other UEs (for example, a UE that has been determined to be an "anchor UE", or a UE that has not been determined to be an "anchor UE"). "UE) performs SL-PRS transmission on one or more SL-PRS resources (for example, the "one or more other UEs" transmit SL-PRS on different SL-PRS resources respectively), where each The SL-PRS resources corresponding to each SL-PRS transmission may be reserved and/or allocated by the target UE, or reserved and/or allocated by the UE performing the SL-PRS transmission. Optionally, the functions of the second SL positioning process and the third SL positioning process can be combined in one SL positioning process (for example, called the "fourth SL positioning process"). For example, a target UE can request a or multiple other UEs perform some or all of the following two items (for example, the first item of the following may be indicated in the request, or the second item of the following may be indicated, or the first item and the second item of the following may be indicated. Binary):

●Perform measurements on one or more SL-PRS resources and send corresponding measurement reports. For example, the "one or more other UEs" respectively perform measurement of the measurement amount indicated by the target UE on an SL-PRS resource indicated by the target UE and provide the measurement information to the target UE (or by the target UE) respectively. A destination communication node indicated by the target UE) sends a corresponding measurement report.

●Perform SL-PRS transmission on one or more SL-PRS resources. For example, the "one or more other UEs" each perform an SL-PRS transmission on a unique SL-PRS resource allocated by the target UE.

In the first SL positioning process, a target UE transmits an "anchor UE request message"; a UE that receives the "anchor UE request message" (for example, is called a "responding node", responding node) Transmit an "anchor UE response message"; after receiving the "anchor UE response message", the target UE can determine whether to determine the "response node" as an anchor UE according to certain conditions; Optionally, the target UE may transmit an "anchor UE confirmation message" to the "response node" (for example, after the target UE determines the "response node" as an anchor UE). in,

●There can be one or more "response nodes". For example, when the "anchor UE request message" is transmitted in a broadcast or multicast manner, there may be multiple "response nodes". For another example, when the "anchor UE request message" is transmitted in unicast mode, there is one "responding node".

●The "anchor UE request message" may indicate one or more positioning methods to be used (such as a positioning method based on TDOA (Time Difference Of Arrival), or based on AoD (Angle of Departure)) Positioning methods, such as positioning methods based on AoA (Angle of Arrival), positioning methods based on RTT (Round Trip Time, round trip time) or multi-RTT (Multi-RTT, multiple RTT)). Correspondingly, a UE that supports the one or more positioning methods may transmit the "anchor UE response message" after receiving the "anchor UE request message" as a response to the "anchor UE request message". ” response; none of them support UEs supporting the one or more positioning methods may ignore the received "Anchor UE Request Message".

●The "anchor UE request message" may indicate one or more measurement quantities to be used (such as SL-PRS RSRP, another example is SL-RSTD, another example is UE reception-transmission time difference). Correspondingly, a UE that supports the one or more measurement quantities may transmit the "anchor UE response message" after receiving the "anchor UE request message" as a response to the "anchor UE request message". "response; a UE that does not support the one or more measurement quantities may ignore the received "anchor UE request message".

●The "anchor UE request message" may indicate whether absolute positioning or relative positioning is to be performed.

●The "anchor UE request message" may indicate the SL ID of the corresponding "positioning UE group". Wherein, the "positioning UE group" may be a positioning UE group formed by all anchor UEs and, optionally, the target UE, after all anchor UEs are determined; the "positioning UE group" The SL ID of the "positioning UE group" may be generated by the target UE, or obtained by the target UE from one other communication node (for example, by the "other communication node" according to the method in Embodiment 5 of the present invention). provided by the target UE).

●The "Anchor UE Request Message" can be transmitted in a broadcast manner. Correspondingly, the "Destination ID" of the SL transmission carrying the "Anchor UE Request Message" can be a predefined or configured or preconfigured SL ID used for broadcasting. For example, this applies to the situation where the target UE has not determined any anchor UE.

●The "anchor UE request message" can be transmitted in a multicast manner, and accordingly carries The "destination ID" of the SL transmission of the "anchor UE request message" may be the SL ID of the corresponding "positioning UE group". For example, this may be applicable to the situation where the target UE has obtained the SL ID of the "positioning UE group" according to the method in Embodiment 5 of the present invention.

●The "Anchor UE Request Message" can be transmitted in a unicast manner. Correspondingly, the "Destination ID" of the SL transmission carrying the "Anchor UE Request Message" can be the SL of the "Response Node" ID. . For example, this may apply where the target UE requests a specific other UE as an anchor UE.

●Any one of the "anchor UE request message", "anchor UE response message" and "anchor UE confirmation message" can correspond to the information indicated in the physical layer in an SL transmission (such as the information indicated in the SCI ), and/or information indicated in a higher layer (such as information indicated in the PC5-RRC layer; and information indicated in the MAC header; and information indicated in the MAC CE).

●The "anchor UE response message" may indicate the location information of the "response node", such as geographical position, or velocity.

●The "anchor UE confirmation message" may indicate the group member ID of the "responding node" in the corresponding "positioning UE group". Wherein, the "positioning UE group" may be a positioning UE group formed by all anchor UEs and, optionally, the target UE, after all anchor UEs are determined; the "positioning UE group" The SL ID of the "positioning UE group" may be generated by the target UE, or obtained by the target UE from one other communication node (for example, by the "other communication node" according to Embodiment 5 of the present invention). method is provided to the target UE).

●The "anchor UE confirmation message" may indicate the SL ID of the corresponding "positioning UE group". Wherein, the "positioning UE group" may be a positioning UE group formed by all anchor UEs and, optionally, the target UE, after all anchor UEs are determined; the "positioning UE group" The SL ID of the "positioning UE group" may be generated by the target UE, or obtained by the target UE from one other communication node (for example, by the "other communication node" according to the method in Embodiment 5 of the present invention). provided by the target UE).

Where applicable (for example, in an in-coverage scenario), part or all of the functions of the first SL positioning process may be implemented in other ways. For example, the target UE or each anchor UE or another UE can generate its own SL ID, or obtain an SL ID allocated by the network node from a network node according to the method in Embodiment 3 of the present invention. , and use it as one of its own SL IDs. For another example, the target UE or each anchor UE or one other UE may include its own SL ID and/or according to the method in Embodiment 1 of the present invention or the method in Embodiment 2 of the present invention. Information including location information is reported to a network node. For another example, a network node may determine an anchor UE set for the target UE according to the method in Embodiment 4 of the present invention, and use the information of the anchor UE set (for example, the anchor UE set in the anchor UE set). The SL ID and/or location information of each UE) is provided to the target UE, and/or the information of the target UE (for example, the SL ID of the target UE) is provided to the anchor UE set. per UE. For another example, the network node may determine an SL ID for the corresponding "positioning UE group" according to the method in Embodiment 5 of the present invention, and provide the SL ID of the "positioning UE group" to the target UE. and/or the anchor point Each UE in the UE set.

In the second SL positioning process, a target UE transmits a "measurement request message" (also called a "measurement report request message"); a UE that receives the "measurement request message" (for example, is called a "measurement report request message") "Response Node") performs the requested measurement and transmits a "Measurement Response Message" (or "Measurement Report Response Message" or "Measurement Report Message") to one or more "Destination Communication Nodes" respectively. . in,

●There can be one or more "response nodes". For example, when the "measurement request message" is transmitted in a broadcast or multicast manner, there may be multiple "response nodes". For another example, when the "measurement request message" is transmitted in unicast mode, there is one "responding node".

●The "responding node" may be a UE that has been determined as an anchor UE. For example, the "response node" has been determined as an anchor UE by the target UE according to the first SL positioning process. For another example, the "response node" has been determined as an anchor UE by a network node according to the method in Embodiment 4 of the present invention.

●The "responding node" may be a UE that is not determined as an anchor UE. For example, this may correspond to a situation where the first SL positioning procedure does not need to be performed. Specifically, for example, the target UE may determine a "responding UE" for which useful measurement results are provided through the "measurement response message" as an anchor UE.

●The one or more "destination communication nodes" may include one or more of the following:

■The target UE.

■One other UE.

■A base station.

■A location server.

●The one or more "destination communication nodes" may be indicated in the "Measurement Request Message", or determined in a predefined or configured or preconfigured manner.

●The "measurement request message" can indicate the measurement quantity corresponding to the requested measurement (for example, SL-PRS RSRP, or SL-RSTD, or UE reception-transmission time difference). A UE that supports the measurement quantity can perform the requested measurement and transmit the "measurement response message" as a response to the "measurement request message" after receiving the "measurement request message"; a UE that does not support The UE measuring the amount may ignore the received "measurement request message".

●The "measurement request message" may indicate one or more SL-PRS resources. Accordingly, the "responding node" may perform the requested measurements on the one or more SL-PRS resources. Optionally, one SL-PRS resource among the one or more SL-PRS resources (for example, the SL-PRS resource with the smallest number; another example, the SL-PRS resource with the earliest time) may be indicated implicitly. For example, the SL-PRS resource may be the SL-PRS resource associated with the SL transmission (for example, a PSCCH transmission; or a PSCCH/PSSCH transmission) carrying the "measurement request message".

●The "measurement request message" can be transmitted in a multicast manner. For example, the "destination identifier" indicated in the "measurement request message" may be the SL ID of the corresponding "positioning UE group". Among them, the information of the "positioning UE group" (such as the SL ID of the "positioning UE group"; and the SL ID and/or group member ID of each anchor UE in the "positioning UE group" and /or location information) may be determined by the target UE according to the first SL positioning process, or by the target UE according to the present invention. Obtained by the method in Embodiment 3. Correspondingly, the "response node" may be a UE that has been determined as an anchor UE; the SL ID of the "positioning UE group" may be determined by the "response node" according to the first SL positioning process, or Provided by another communication node to the "response node" according to the method in Embodiment 5 of the present invention.

●The "Measurement Request Message" can be transmitted in a broadcast manner. Correspondingly, the "Destination ID" of the SL transmission carrying the "Measurement Request Message" can be a predefined or configured or preconfigured one for broadcast. SLID. For example, this applies to the situation where the target UE has not determined any anchor UE.

●The "Measurement Request Message" can be transmitted in a unicast manner. Correspondingly, the "Destination ID" of the SL transmission carrying the "Measurement Request Message" can be that of an anchor UE that has been determined by the target UE. SLID.

●The "Measurement Response Message" can be transmitted in a unicast manner. Correspondingly, the "Destination ID" of the SL transmission carrying the "Measurement Response Message" can be the SL ID of the target UE.

●The "measurement response message" may indicate the measurement result corresponding to the requested measurement.

●The "Measurement Response Message" may indicate the location information of the "Response Node" transmitting the "Measurement Response Message".

●Any one of the "Measurement Request Message" and "Measurement Response Message" may correspond to information indicated in the physical layer in an SL transmission (for example, information indicated in SC1), and/or information indicated in a higher layer ( For example, the information indicated in the PC5-RRC layer; and the information indicated in the MAC header; and the information indicated in the MAC CE).

In the third SL positioning process, a target UE transmits a "SL-PRS transmission request" "Request message"; a UE (for example, called a "responding node") that receives the "SL-PRS transmission request message" executes one or more SL-PRS requested by the "SL-PRS transmission request message"Transmission; optionally, the "response node" transmits a "SL -PRS transmission confirmation message". Among them,

●There can be one or more "response nodes". For example, when the "SL-PRS transmission request message" is transmitted in a broadcast or multicast manner, there may be multiple "response nodes". For another example, when the "SL-PRS transmission request message" is transmitted in unicast mode, there is one "responding node".

●The "responding node" may be a UE that has been determined as an anchor UE. For example, the "response node" has been determined as an anchor UE by the target UE according to the first SL positioning process. For another example, the "response node" has been determined as an anchor UE by a network node according to the method in Embodiment 4 of the present invention.

●The "responding node" may be a UE that is not determined as an anchor UE. For example, this may correspond to a situation where the first SL positioning procedure does not need to be performed. Specifically, for example, the target UE may determine whether there is a "responding node" that will perform SL-PRS transmission on a corresponding SL-PRS resource based on whether it receives one of the "SL-PRS transmission confirmation messages".

●The "SL-PRS transmission request message" may indicate a SL-PRS resource set. Correspondingly, the "responding node" may perform SL-PRS transmission on a subset of SL-PRS resources of the SL-PRS resource set. For example, the "responding node" (as an anchor UE) can be based on its group membership in the corresponding "locating UE group" The ID determines the SL-PRS resource subset. As a special case, each of the SL-PRS resource subsets may have only one SL-PRS resource. Correspondingly, the group member ID values 1, 2, ... may respectively correspond to the index 0 in the SL-PRS resource set. ,1,… SL-PRS resources.

●The "SL-PRS transmission request message" can be transmitted in a multicast manner. For example, the "destination ID" indicated in the "SL-PRS transmission request message" may be the SL ID of the corresponding "positioning UE group". Among them, the information of the "positioning UE group" (such as the SL ID of the "positioning UE group"; and the SL ID and/or group member ID of each anchor UE in the "positioning UE group" and /or location information) may be determined by the target UE according to the first SL positioning process, or obtained by the target UE according to the method in Embodiment 3 of the present invention. Correspondingly, the "response node" may be a UE that has been determined as an anchor UE; the SL ID of the "positioning UE group" may be determined by the "response node" according to the first SL positioning process, or Provided by another communication node to the "response node" according to the method in Embodiment 5 of the present invention.

●The "SL-PRS transmission request message" can be transmitted in a broadcast manner. Correspondingly, the "destination ID" of the SL transmission carrying the "SL-PRS transmission request message" can be a predefined or configured or preset The configured SL ID used for broadcasting. For example, this applies to the situation where the target UE has not determined any anchor UE.

●The "SL-PRS transmission request message" can be transmitted in a unicast manner. Correspondingly, the "destination ID" of the SL transmission carrying the "SL-PRS transmission request message" can be the one that has been determined by the target UE. The SL ID of an anchor UE.

●The "SL-PRS transmission confirmation message" can be transmitted in a unicast manner. Correspondingly, the "destination ID" of the SL transmission carrying the "SL-PRS transmission confirmation message" can be the SL of the target UE. ID.

●Any one of the "SL-PRS transmission request message" and "SL-PRS transmission confirmation message" may correspond to the information indicated in the physical layer in an SL transmission (for example, the information indicated in SCl), and/or in Information indicated by higher layers (such as information indicated in the PC5-RRC layer; information indicated in the MAC header; information indicated in the MAC CE).

Embodiment 1

The method executed by the UE according to Embodiment 1 of the present invention will be described below with reference to FIG. 1 .

Figure 1 shows a flow chart corresponding to a method performed by a UE according to Embodiment 1 of the present invention.

As shown in Figure 1, in Embodiment 1 of the present invention, the steps performed by the UE include: step S101 and step S103.

Specifically, in step S101, the content of a type-instruction message is determined.

The type one indication message may include one or more UE information indications.

Some or all of the one or more UE information indications may be related to the SL.

Some or all of the one or more UE information indications may be related to positioning.

The type one indication message may be a message for the UE to send to a destination node. The destination node may be another UE, or a network node (such as a base station, or a positioning server).

The type one indication message may be an LPP (LTE Positioning Protocol) message (For example, ProvideCapabilities message, and other LPP messages).

The type one indication message may be an RRC message (such as a UECapabilityInformation message, or other RRC messages).

The type one indication message may be a PC5-RRC message (such as a UECapabilityInformationSidelink message, or other PC5-RRC messages).

The type one indication message may be a MAC message. For example, the type one indication message may be included in a MAC CE.

The type one indication message may be triggered autonomously by the UE.

The type one indication message may be triggered by a type one request message. For example, the UE receives the type one request message sent by the destination node, and, in response to the type one request message, triggers the type one indication message.

The type 1 request message may be an LPP message (such as a RequestCapabilities message, or other LPP messages).

The type one request message may be an RRC message (such as a UECapabilityEnquiry message, or other RRC messages).

The type 1 request message may be a PC5-RRC message (such as a UECapabilityEnquirySidelink message, or other PC5-RRC messages).

The type one request message may be a MAC message. For example, the type one request message may be included in a MAC CE.

The type one request message may include one or more requested UE information types (eg, UE capability type).

Optionally, if the type one indication message is triggered by the type one request message, then the The Type 1 indication message must contain the UE information type requested in the Type 1 request message.

The one or more UE information indications may include one or more of the following:

●Whether the UE supports multiplexing one SL-PRS transmission in one PSCCH/PSSCH transmission.

●The maximum number of "SL-PRS resource pools" supported by the UE.

●Whether the UE supports "dedicated SL-PRS resource pool".

●The maximum number of "dedicated SL-PRS resource pools" supported by the UE.

●Whether the UE supports "non-dedicated SL-PRS resource pool".

●The maximum number of "non-dedicated SL-PRS resource pools" supported by the UE.

●Whether the UE can become an anchor UE (or whether the UE is interested in becoming an anchor UE; or whether the UE is willing to become an anchor UE; or whether the UE supports becoming an anchor UE) UE).

●The SL carrier information supported by the UE for positioning (for example, it includes information on one or more SL carrier frequencies).

●One or more SL positioning methods supported by the UE, for example, TDOA-based positioning method, and/or AoD-based positioning method, and/or AoA-based positioning method, and/or RTT- or multi-RTT-based positioning method Positioning method.

●One or more measurement quantities for SL positioning supported by the UE, such as SL-PRS RSRP, and/or SL-RSTD, and/or reception-transmission time difference.

●An SL ID of the UE (for example, recorded as ID _self ).

●The SL ID of the "positioning UE group" in which the UE is located (for example, recorded as ID _grp ).

●The location information of the UE. For example, the location information may include the geographical location of the UE, and/or the speed of the UE.

●Information of potential anchor UEs. For example, the "potential anchor UE information" may include one or more potential anchor UEs (for example, respectively noted as ) information, where, for The information may contain one or more of the following:

■Described an SL ID (for example, recorded as ).

■Described location information. For example, the location information may include the the geographical location, and/or the speed.

In addition, in step S103, the type one indication message is sent. For example, the type-one indication message is sent to the destination node.

In Embodiment 1 of the present invention, part or all of the "potential anchor UE information" can be used by the UE according to the control information received on the SL (such as "SL-PRS control information"; and Such as other control information) determined. For example, if the control information transmitted by UE-A indicates that the UE-A can become an anchor UE (or is interested in becoming an anchor UE, or is willing to become an anchor UE, or supports becoming an anchor UE) , then the UE may list the UE-A as a "potential anchor UE".

In this way, according to the first embodiment, the present invention provides a method in which a UE (for example, a potential target UE; another example, a potential anchor UE) reports its respective SL ID and/or location information, etc., so that the central node can quickly determine one or more suitable anchor UEs for any target UE, and efficiently determine a corresponding "positioning UE group".

Embodiment 2

The method executed by the UE in Embodiment 2 of the present invention will be described below with reference to FIG. 2 .

Figure 2 shows a flow chart corresponding to a method performed by a UE according to Embodiment 2 of the present invention.

As shown in Figure 2, in Embodiment 2 of the present invention, the steps performed by the UE include: step S201 and step S203.

Specifically, in step S201, the content of a type 2 indication message is determined.

The type 2 indication message may include one or more positioning-related indications (such as location information, such as measurement results), wherein part or all of the one or more positioning-related indications may be related to SL related.

The type 2 indication message may be a message for the UE to send to a destination node. The destination node may be another UE, or a network node (such as a base station, or a positioning server).

The type 2 indication message may be an LPP message (such as a ProvideLocationInformation message, a ProvideSidelinkInformation message, or other LPP messages).

The type 2 indication message may be an RRC message (such as a UELocationInformation message, or other RRC messages).

The type 2 indication message may be a PC5-RRC message (such as a UELocationInformationSidelink message, or other PC5-RRC messages).

The type 2 indication message may be a MAC message. For example, the type 2 indication message may be included in a MAC CE.

The type 2 indication message may be triggered autonomously by the UE.

The Type 2 indication message may be triggered by a Type 2 request message. For example, the UE receives the Type 2 request message sent by the destination node, and in response to the Type 2 request message, triggers the Type 2 indication message.

The type 2 request message may be an LPP message (such as a RequestLocationInformation message, a RequestSidelinkInformation message, or other LPP messages).

The type 2 request message may be an RRC message (such as a UELocationInformationEnquiry message, or other RRC messages).

The type 2 request message may be a PC5-RRC message (such as a UELocationInformationEnquirySidelink message, or other PC5-RRC messages).

The type 2 request message may be a MAC message. For example, the Type 2 request message may be included in a MAC CE.

Optionally, the type 2 request message may include the requested SL positioning information type. For example, possible values for the requested SL positioning information type may include "information requiring potential anchor UEs" (potentialAnchorUEsRequired).

Optionally, the type 2 request message may include the requested location information type, and, optionally, the QoS (Quality of Service, Quality of Service) that may be associated with the requested location information type. For example, possible values for the type of location information requested may include "locationEstimateRequired" and/or "locationMeasurementsRequired" and/or "locationEstimatePreferred" and/or "preferred location"Measurement" (locationMeasurementsPreferred).

Optionally, if the Type 2 indication message is triggered by the Type 2 request message, the Type 2 indication message must contain the SL positioning information type and/or location information type requested in the Type 2 request message.

Optionally, if the Type 2 indication message is triggered by the Type 2 request message, the indication information provided in the Type 2 indication message must match the SL positioning information and/or location requested in the Type 2 request message. information, or a subset of the SL positioning information and/or location information requested in the Type 2 request message.

The one or more positioning-related instructions may include one or more of the following:

●Whether the UE can become an anchor UE (or whether the UE is interested in becoming an anchor UE; or whether the UE is willing to become an anchor UE; or whether the UE supports becoming an anchor UE) UE).

●The SL carrier information supported by the UE for positioning (for example, it includes information on one or more SL carrier frequencies).

●One or more SL positioning methods supported by the UE, for example, TDOA-based positioning method, and/or AoD-based positioning method, and/or AoA-based positioning method, and/or RTT- or multi-RTT-based positioning method Positioning method.

●One or more measurements supported by the UE for SL positioning, for example, SL-PRS RSRP, and/or SL-RSTD, and/or reception-transmission time difference.

●An SL ID of the UE (for example, recorded as ID _self ).

●The SL ID of the "positioning UE group" in which the UE is located (for example, recorded as ID _grp ).

●The location information of the UE. For example, the location information may include the location of the UE. physical location, and/or speed of the UE.

●Information of potential anchor UEs. For example, the "potential anchor UE information" may include one or more potential anchor UEs (for example, respectively noted as ) information, where, for The information may contain one or more of the following:

■Described SL ID (for example, recorded as ).

■Described location information. For example, the location information may include the the geographical location, and/or the speed.

In addition, in step S203, the type 2 indication message is sent. For example, the type 2 indication message is sent to the destination node.

In Embodiment 1 of the present invention, part or all of the "potential anchor UE information" can be used by the UE according to the control information received on the SL (such as "SL-PRS control information"; and Such as other control information) determined. For example, if the control information transmitted by UE-A indicates that the UE-A can become an anchor UE (or is interested in becoming an anchor UE, or is willing to become an anchor UE, or supports becoming an anchor UE) , then the UE may list the UE-A as a "potential anchor UE".

In this way, according to Embodiment 2, the present invention provides a method in which a UE (for example, a potential target UE; another example, a potential anchor UE) reports its respective data to a central node (such as a positioning server). SL ID and/or location information, etc., so that the central node can quickly determine one or more suitable anchor UEs for any target UE, and efficiently determine a corresponding "positioning UE group".

Embodiment 3

The method executed by the UE in Embodiment 3 of the present invention will be described below with reference to FIG. 3 .

Figure 3 shows a flow chart corresponding to a method performed by a UE according to Embodiment 3 of the present invention.

As shown in Figure 3, in Embodiment 3 of the present invention, the steps performed by the UE include: step S301 and step S303.

Specifically, optionally, in step S301, a type three request message is sent. For example, the type 3 request message is sent to a destination node, where the destination node may be another UE, or a network node (such as a base station, or a positioning server).

The type three request message may be used to request assistance data related to positioning.

The type 3 request message may be an LPP message (such as a RequestAssistanceData message, or other LPP messages).

The type 3 request message may be an RRC message (such as a UEAssistanceEnquiry message, or other RRC messages).

The type 3 request message may be a PC5-RRC message (such as a UEAssistanceEnquirySidelink message, or other PC5-RRC messages).

The type 3 request message may be a MAC message. For example, the Type 3 request message may be included in a MAC CE.

The type 3 request message may include a request for "anchor UE information". For example, the UE, as a target UE that needs to determine its own geographical location, requests the destination node to provide it with information about one or more anchor UEs that can provide support for its positioning operation.

The type three request message may include a request for "SL ID". For example, the UE As a target UE that needs to determine its own geographical location, the destination node is requested to allocate an SL ID that can be used to identify the UE when performing positioning-related operations on the SL; in another example, the UE serves as An "anchor UE" that can provide support for positioning operations of other UEs requests the destination node to assign it an SL ID that can be used to identify the UE when performing positioning-related operations on the SL.

The type 3 request message may include a request for "target UE information". For example, the UE, as an "anchor UE" that can provide support for positioning operations of other UEs, requests the destination node to provide it with information about the corresponding target UE.

The type three request message may include a request for "positioning UE group information". For example, the UE, as a "target UE" or "anchor UE", requests the destination node to provide the UE with information about the positioning UE group in which the UE is located (such as the SL ID of the positioning UE group). .

Furthermore, in step S303, one or more type three indication messages are received. For example, receiving the one or more type three indication messages sent by the destination node.

The one or more type three indication messages may be triggered autonomously by the destination node. For example, this is applicable to the case where the UE does not perform the step S301.

The one or more Type 3 indication messages may be triggered by the Type 3 request message. For example, the Type 3 indication message may be the destination node's response to the Type 3 request message received by the UE and sent by the UE in step S301.

The one or more type three indication messages may be used to indicate one or more positioning-related assistance data.

Each of the type three indication messages may be an LPP message (e.g. ProvideAssistanceData message, as well as other LPP messages).

Each type 3 indication message may be an RRC message (such as a UEAssistanceData message, or other RRC messages).

Each type 3 indication message may be a PC5-RRC message (such as a UEAssistanceDataSidelink message, or other PC5-RRC messages).

Each type three indication message may be a MAC message. For example, the Type 3 indication message may be included in a MAC CE.

The one or more positioning-related assistance data may include "anchor UE information" (for example, this may be applicable when the UE is a target UE), which may include one or more anchor UEs. (For example, respectively recorded as ) information, where, for The information may contain one or more of the following:

●Described SL ID (for example, recorded as ).

●Described The group member ID.

●Described location information. For example, the location information may include the the geographical location, and/or the speed.

The "anchor UE information" may be determined by the destination node according to the method in Embodiment 4 of the present invention, or provided to the destination node by another communication node according to the method in Embodiment 4 of the present invention. .

The one or more positioning-related assistance data may include an SL ID assigned to the UE (for example, recorded as ID _asn ), where the ID _asn may be used to identify the UE on the SL ( For example, the UE is identified in one or more "SL positioning procedures"). For example, this It may be applicable to the situation where the UE is a target UE, or the situation where the UE is an anchor UE, or the situation where the UE is a UE that supports positioning based on SL.

The one or more positioning-related assistance data may include "target UE information", which may include an SL ID of the target UE (for example, recorded as ID _tgt ). Wherein, the ID _tgt may be used to identify the target UE on the SL (for example, identify the target UE in one or more "SL positioning procedures"). This may apply, for example, if the UE is an anchor UE.

The destination node may determine the ID _tgt in one or more ways. For example, the ID _tgt may be all information provided by the target UE to the destination node according to the method in Embodiment 1 of the present invention. The SL ID of the target UE; for another example, the ID _tgt may be the SL ID of the target UE provided by the target UE to the destination node according to the method in Embodiment 2 of the present invention; for another example, The ID _tgt may be an SL ID assigned by the destination node to the target UE according to the method in Embodiment 3 of the present invention.

The one or more positioning-related assistance data may include "positioning UE group information", which may include the SL ID of a "positioning UE group" (for example, the "positioning UE group" where the UE is located), And, optionally, the "anchor UE information", and, optionally, the "target UE information". Wherein, the SL ID of the "positioning UE group" may be assigned by the destination node, or obtained by the destination node in other ways.

In this way, according to the third embodiment, the present invention provides a method in which a central node (such as a positioning server) transmits the respective required information about the corresponding information to a target UE and/or each determined anchor UE. "Location UE group" information so that the target UE can To directly transmit the SL-PRS to the determined one or more anchor UEs on the SL and/or measure the SL-PRS transmitted by the one or more anchor UEs without previously searching for a suitable anchor point on the SL. UE. In addition, by having the central node allocate SL IDs to all UEs in the "positioning UE group" respectively, conflicts of SL IDs of different UEs in the "positioning UE group" are avoided.

Embodiment 4

The method executed by the communication node in Embodiment 4 of the present invention will be described below with reference to FIG. 4 . The communication node may be a UE or a network node (such as a base station or a positioning server).

Figure 4 shows a flow chart corresponding to a method executed by a communication node according to Embodiment 4 of the present invention.

As shown in Figure 4, in Embodiment 4 of the present invention, the steps performed by the communication node include: step S401, step S403, step S405 and step S407.

Specifically, in step S401, a candidate anchor point UE set is determined. For example, the set of candidate anchor point UEs can be recorded as the collection The number of elements in can be recorded as in, Can be an integer greater than or equal to 0, or an integer greater than or equal to 1. right Can remember right Can remember

Optionally, the set Can be initialized to an empty set.

Optionally, it may be determined whether a UE (for example, marked as ) join the set

●Described provided to the communication node regarding the Information. For example, described (As a target UE, or not as a target UE) Provide the information about the communication node to the communication node according to the method in Embodiment 1 of the present invention. information; also, as stated (As a target UE, or not as a target UE) Provide information about the communication node to the communication node according to the method in Embodiment 2 of the present invention. Information.

●The communication node is based on the and/or measurement information provided by one or more other communication nodes, and/or other information, as determined by the Location information (as a target UE), such as geographical location and speed. Each of the other communication nodes may be a UE or a network node (such as a base station or a positioning server).

●One or more network nodes provide the communication node with information about the Information. Wherein, each source network node may be a base station or a positioning server.

●One or more UEs (for example, let the corresponding set be A _other ) provide information about the communication node to the communication node. Information. For example, a UE in the set A _other provides the "potential anchor UE information" to the communication node according to the method in Embodiment 1 of the present invention, which includes the Information. For another example, a UE in the set A _other provides the "potential anchor UE information" to the communication node according to the method in Embodiment 2 of the present invention, which includes the Information.

Optionally, only UEs that indicate to the communication node that they can become an anchor UE (or are interested in becoming an anchor UE, or are willing to become an anchor UE, or support becoming an anchor UE) may be added to all UEs. statement collection For example, the communication node may be located at Select zero or one or more UEs to join among the UEs indicated to it that it can become an anchor UE (or are interested in becoming an anchor UE, or are willing to become an anchor UE, or support becoming an anchor UE). the collection

Optionally, the communication node may decide which UE(s) to add to the set based on its own implementation.

the collection Can change over time. For example, if the collection A candidate anchor point UE in (e.g. in information has expired, you can send the from the collection removed. Among them, the The conditions for information expiration may include one or more of the following (any combination of "and" and/or "or"):

●From what will be said add to said collection The time elapsed since is greater than (or, greater than or equal to)

●As stated in the last update The time elapsed since the information is greater than (or, greater than or equal to)

in, Can be a predefined or configured or preconfigured value, or be determined by one or more predefined or configured or preconfigured values.

Optionally, the set Each candidate anchor UE is associated with one or more candidate anchor UE parameters. For example, for Associate one or more of the following:

●Described SL ID (for example, recorded as ). Among them, the can be described by Provided to the communication node, or provided to the communication node by a UE in the set A _other , or provided by a base station to the communication node,

Or the communication node provides the distribute. Specifically, for example, the can be the The method provided to the communication node according to the method in Embodiment 1 of the present invention SL ID; also, as described It may be the SL ID of a potential anchor UE in the "potential anchor UE information" provided by a UE in the set A _other to the communication node according to the method in Embodiment 1 of the present invention, where The potential anchor UE is the Again, as mentioned can be the The method provided to the communication node according to the method in Embodiment 2 of the present invention SL ID; also, as described It may be the SL ID of a potential anchor UE in the "potential anchor UE information" provided by a UE in the set A _other to the communication node according to the method in Embodiment 2 of the present invention, where The potential anchor UE is the Again, as mentioned The communication node may be the method according to the method in Embodiment 3 of the present invention. An SL ID assigned.

●Described location information. For example, the location information may include the the geographical location, and/or the speed.

In addition, in step S403, a subset of the candidate anchor UE set is determined as an anchor UE set of a target UE. For example, the target UE may be marked as UE _tgt , and the anchor UE set may be marked as the collection The number of elements in can be recorded as

Can be an integer greater than or equal to 0. right Can remember right Can remember Among them, for a _k is a satisfaction integer.

The set may be determined in one or more ways For example, for like If the anchor UE condition is met, the Join said collection Optionally, for the The anchor UE condition may be determined by the communication node according to its own implementation. Optionally, for the The anchor UE condition may include one or more of the following (any combination in the form of "and" and/or "or"):

●Described location information is available.

●Described One or more identical serving cells are configured with the UE _tgt .

●Described One or more identical TRPs (Transmission-Reception Points) are configured with the UE _tgt .

●Described It is not the same UE as the UE _tgt .

Optionally, the UE _tgt may be a UE in the set A _other .

Optionally, the UE _tgt may be associated with one or more target UE parameters. For example, the one or more target UE parameters may include the SL ID of the UE _tgt (for example, marked as ID _tgt ).

Optionally, after determining the set After that, further determine the set The group member ID corresponding to each UE in . For example, the group member IDs assigned in ascending order according to the SL ID of each UE are 1, 2,...,

The communication node can obtain the ID _tgt in one or more ways. For example, the ID _tgt may be provided to the communication node by the UE _tgt , or provided to the communication node by a UE in the set A _other , or provided to the communication node by a base station, or by The communication node is assigned to the UE _tgt . Specifically, for example, the ID _tgt may be the SL ID of the UE _tgt provided by the UE tgt to the communication node according to the method in Embodiment 1 of the present invention; for another example, the ID _tgt may be the SL ID of the UE _tgt . One of the "potential anchor UE information" provided by a UE in the set A _other to the communication node according to the method in Embodiment 1 of the present invention. The SL ID of a potential anchor UE, wherein the potential anchor UE is the UE _tgt ; for another example, the ID _tgt may be the UE tgt sending the SL ID to the UE _tgt according to the method in Embodiment 2 of the present invention. The SL ID of the UE _tgt provided by the communication node; for another example, the ID _tgt may be the "potential" provided by a UE in the set A _other to the communication node according to the method in Embodiment 2 of the present invention. The SL ID of a potential anchor UE in "Anchor UE Information", wherein the potential anchor UE is the UE _tgt ; as another example, the ID _tgt may be the communication node according to the implementation of the present invention. The method in Example 3 is an SL ID allocated by the UE _tgt .

In addition, optionally, in step S405, one or more pieces of information of the anchor UE set are provided to the target UE.

For example, through the method in Embodiment 3 of the present invention, the set One or more pieces of information (for example, SL ID; another example, location information; another example, group member ID) of each UE in tgt is provided to the UE _tgt . Specifically, for example, through one or more assistance data indication messages, the set One or more pieces of information (for example, SL ID; another example, location information; another example, group member ID) of each UE in tgt is provided to the UE _tgt , wherein the one or more assistance data indication messages It may correspond to "one or more assistance data indication messages" in step S303 in Embodiment 3 of the present invention.

In addition, optionally, in step S407, one or more pieces of information about the target UE are respectively provided to one or more UEs in the anchor UE set.

For example, for Through the method in Embodiment 3 of the present invention, one or more pieces of information (for example, SL ID) of the UE _tgt are provided to Specifically, for example, one or more pieces of information (for example, SL ID) of the UE _tgt are provided to the wherein the one or more assistance data indicates The message may correspond to "one or more assistance data indication messages" in step S303 in Embodiment 3 of the present invention.

In Embodiment 4 of the present invention, only step S405 may be performed without performing step S407.

In Embodiment 4 of the present invention, only step S407 may be performed without performing step S405.

In Embodiment 4 of the present invention, step S405 may be executed first, and then step S407 may be executed.

In Embodiment 4 of the present invention, step S407 may be executed first, and then step S405 may be executed.

In Embodiment 4 of the present invention, step S405 and step S407 may be executed simultaneously.

In this way, according to the fourth embodiment, the present invention provides a method in which a central node (such as a positioning server) determines one or more suitable anchor UEs from many potential anchor UEs for a target UE. The relevant information is transmitted to all related UEs respectively, which reduces the positioning delay caused by the target UE determining the anchor UE set by itself, and improves the positioning efficiency.

Embodiment 5

The method executed by the communication node in Embodiment 5 of the present invention will be described below with reference to FIG. 5 . The communication node may be a UE or a network node (such as a base station or a positioning server).

Figure 5 shows the flow corresponding to the method executed by the communication node according to Embodiment 5 of the present invention. Process map.

As shown in Figure 5, in Embodiment 5 of the present invention, the steps performed by the communication node include: step S501 and step S503.

Specifically, in step S501, the SL ID of a "positioning UE group" is determined (for example, recorded as ID _{grp, 0} ). The "positioning UE group" may include one or more anchor UEs (for example, the corresponding anchor UE set may be recorded as ), and, optionally, a target UE (for example, denoted as UE _tgt ). For example, the set It may be determined by the communication node according to the method in Embodiment 4 of the present invention, or provided to the communication node by another communication node according to the method in Embodiment 4 of the present invention.

The ID _grp,0 may be generated by the communication node.

The ID _grp,0 may be provided to the communication node by a further communication node.

The ID _grp,0 may correspond to the ID _grp provided by the UE _tgt to the communication node according to the method in Embodiment 1 of the present invention.

The ID _grp,0 may correspond to the ID _grp provided by the UE _tgt to the communication node according to the method in Embodiment 2 of the present invention.

In addition, in step S503, the SL ID is provided to one or more UEs in the "positioning UE group" respectively.

For example, for Through the method in Embodiment 3 of the present invention, the ID _{grp, 0} is provided to Specifically, for example, the ID _grp,0 is provided to the The one or more assistance data indication messages may correspond to the "one or more assistance data indication messages" in Embodiment 3 of the present invention.

For another example, the ID _grp,0 is provided to the UE _tgt through the method in Embodiment 3 of the present invention. Specifically, for example, the ID _grp,0 is provided to the UE _tgt through one or more assistance data indication messages, where the one or more assistance data indication messages may correspond to the third embodiment of the present invention. "One or more assistance data indication messages".

Optionally, Embodiment 5 of the present invention may be part of Embodiment 4 of the present invention. For example, in Embodiment 4 of the present invention, when determining the set After that, the corresponding ID _grp,0 can be additionally determined; for another example, in the fourth embodiment of the present invention, the ID _grp,0 and/or the set One or more pieces of information about each UE in tgt are provided to the UE _tgt ; for another example, in the fourth embodiment of the present invention, Provide one or more pieces of information of the ID _{grp, 0} and/or the UE _tgt to

In this way, according to the fifth embodiment, the present invention provides a method in which a central node (such as a positioning server) determines the SL ID for a "positioning UE group" to avoid different "positioning UE groups" in the SL-based positioning process. Collision of SL IDs for "UE Groups" reduces the risk of transmitting and/or receiving erroneous positioning-related reference signals and/or measurement information on the SL.

Embodiment 6

The method executed by the UE in Embodiment 6 of the present invention will be described below with reference to FIG. 6 .

Figure 6 shows a flow chart corresponding to a method performed by a UE according to Embodiment 6 of the present invention.

As shown in Figure 6, in Embodiment 6 of the present invention, the steps performed by the UE include: step S601 and step S603.

Specifically, in step S601, control information related to positioning is received.

The "positioning-related control information" may be sent by a source node. deliver.

The "positioning-related control information" may be sent on the DL, and accordingly, the source node may be a network node (such as a base station, or a positioning server).

The "positioning-related control information" may be sent on the SL, and accordingly, the source node may be another UE.

The "positioning-related control information" may be DCI (Downlink Control Information), or may be included in DCI.

The "positioning-related control information" may be SCI (Sidelink Control Information), or may be included in SCI.

The "positioning-related control information" may be included in a higher-layer protocol message (such as an LPP message, an RRC message, a PC5-RRC message, or a MAC message).

The "positioning-related control information" may indicate a SL-PRS resource set. For example, the SL-PRS resource set can be recorded as the collection The number of elements in can be recorded as in, Can be an integer greater than or equal to 0, or an integer greater than or equal to 1. right Can remember right Can remember Can be a less than (or, less than or equal to; or, equal to) value, where, Can be a predefined or configured or preconfigured value, or be determined by one or more predefined or configured or preconfigured values, e.g.

the collection can be divided into one or more subsets (for example, each is recorded as a set ),in Can be an integer greater than or equal to 1 number. The "positioning-related control information" may respectively indicate a set of

right SL-PRS Resources One or more positioning-related operations can be associated. The SL-PRS resources The associated one or more positioning-related operations may be indicated by the "positioning-related control information" or determined in a predefined or configured or preconfigured manner. The SL-PRS resources Each of the associated one or more positioning-related operations may be one of multiple operations including some or all of the following:

●The SL-PRS resources Perform measurements on. The corresponding measurement quantity may be indicated by the "positioning-related control information" (for example, the operation may be expressed as "in the SL-PRS resource "Perform XXX measurement", where -PRS Resources perform SL-PRS RSRP measurement on the SL-PRS resource; as another example, the "positioning-related control information" may indicate that the SL-PRS resource perform SL-RSTD measurement on the SL-PRS resource; as another example, the "positioning-related control information" may indicate that the SL-PRS resource Perform receive-transmit time difference measurements on The measurement quantity may correspond to the SL-PRS resource One or more SL-PRS resources.

● Transmitted in the SL-PRS resource Measurement reports corresponding to measurements performed on.

●The SL-PRS resources Measurements are performed and corresponding measurement reports are transmitted. The corresponding measurement quantity may be indicated by the "positioning-related control information" (for example, the operation may be expressed as "in the SL-PRS resource Execute XXX test on Quantity", where perform SL-PRS RSRP measurement on the SL-PRS resource; as another example, the "positioning-related control information" may indicate that the SL-PRS resource perform SL-RSTD measurement on the SL-PRS resource; as another example, the "positioning-related control information" may indicate that the SL-PRS resource Perform receive-transmit time difference measurements on The measurement quantity may correspond to the SL-PRS resource One or more SL-PRS resources.

●The SL-PRS resources Perform SL-PRS transmission on.

●The SL-PRS resources perform SL-PRS transmissions on the SL-PRS resource and, under certain conditions (for example, when a specific other SL-PRS resource is associated with a specific operation), additionally on the SL-PRS resource Perform a measurement operation on. For example, if And the "positioning-related control information" is indicated in the SL-PRS resource Perform SL-PRS transmission on the SL-PRS resource To perform "reception-transmission time difference" measurement on the SL-PRS resource Perform SL-PRS transmission on the computer, and measure the time of the SL-PRS transmission (such as the starting time of the SL-PRS transmission, for example, recorded as ), and measured in the SL-PRS resource The time of the SL-PRS transmission detected (e.g. performed by another communication node) (e.g. the start time of the SL-PRS transmission, e.g. denoted as ), and as described and stated Determine the measured "reception-transmission time difference". Optionally, if the "positioning-related control information" indicates that in the SL-PRS resource SL-PRS transmission is performed on the The "destination ID" in the associated "SL-PRS control information" may be indicated by the "positioning-related control information", or determined in a predefined or configured or preconfigured manner. Optionally, for SL-PRS resources The "destination ID" is the same.

right gather One or more positioning-related operations can be associated. the collection The associated one or more positioning-related operations may be indicated by the "positioning-related control information" or determined in a predefined or configured or preconfigured manner. the collection Each of the associated one or more positioning-related operations may be one of multiple operations including some or all of the following:

●In the collection Measurement of a certain measurement quantity is performed on each SL-PRS resource in the resource. The measured quantity may be indicated by the "positioning-related control information" (for example, the measured quantity is specified in an indication of the measuring operation), or determined in a predefined or configured or preconfigured manner. For example, if the collection And the measured quantity is SL-PRS RSRP, then for the set SL-PRS resources in and SL-PRS resources Perform SL-PRS RSRP measurements separately and generate pairs of the SL-PRS resources respectively and the SL-PRS resources measurement results.

●In the collection Partial measurement of a certain measurement quantity is performed on each SL-PRS resource in the Measurements corresponding to all SL-PRS resources in , and generate measurement results corresponding to the measurement quantities. The measured quantity may be indicated by the "positioning-related control information" (for example, the measured quantity is specified in an indication of the measuring operation), or determined in a predefined or configured or preconfigured manner.

●Transfer to the collection The measurement report corresponding to the measurement performed.

●In the collection SL-PRS transmission is performed on each SL-PRS resource.

Optionally, if the "positioning-related control information" indicates that in the set SL-PRS transmission is performed on each SL-PRS resource in ID" may be indicated by the "positioning-related control information" or determined in a predefined or configured or preconfigured manner. Optionally, for the set The "destination ID" is the same.

Optionally, for a measurement operation indicated by the "positioning-related control information", the "positioning-related control information" may additionally indicate a destination for sending a corresponding measurement report (for example, the "source node ”, as well as another UE).

Furthermore, in step S603, the operation indicated by the positioning-related control information is performed. For example, on each indicated SL-PRS resource, its associated positioning-related operations (such as performing SL-PRS transmission; or performing measurements and/or transmitting corresponding measurement reports) are respectively indicated.

In this way, according to Embodiment 6, the present invention provides a method that improves the efficiency of signaling transmission by using the same control signaling format to instruct different UEs to perform SL-PRS transmission and corresponding SL-PRS measurement. , reducing the complexity of signaling design.

Variations

Next, FIG. 7 is used to illustrate a communication node that can execute the method executed by a communication node (such as a UE, or a network node) described in detail above in the present invention as a modified example.

FIG. 7 is a block diagram showing a communication node according to the present invention.

As shown in Figure 7, the communication node CN70 includes a processor 701 and a memory 702. at The processor 701 may include, for example, a microprocessor, a microcontroller, an embedded processor, or the like. The memory 702 may include, for example, volatile memory (such as random access memory RAM), hard disk drive (HDD), non-volatile memory (such as flash memory), or other memory. Memory 702 stores program instructions. When this instruction is executed by the processor 701, it can execute the above method executed by the communication node as described in detail in the present invention.

The method of the present invention and the communication nodes involved have been described above in conjunction with preferred embodiments. Those skilled in the art can understand that the methods shown above are only exemplary, and the embodiments described above can be combined with each other without conflict. The method of the present invention is not limited to the steps and sequence shown above. The communication node shown above may include further modules. The various identifications shown above are only illustrative and not restrictive, and the present invention is not limited to the specific information elements as examples of these identifications. Many changes and modifications may be made by those skilled in the art in light of the teachings of the illustrated embodiments.

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 or equation or inequality can be simplified or transformed or reconstructed to a certain extent. Write (such as combining constant terms, exchanging two addition terms, exchanging two multiplication terms, changing the sign of a term and moving it from the left to the right of an equation or inequality, changing a term After the sign is moved from the right side to the left side of the equation or inequality, etc.), the mathematical expression or mathematical equation or mathematical inequality before and after simplification or transformation or rewriting can be considered equivalent.

It should be understood that the above-described embodiments of the present invention can be implemented by software, hardware, or a combination of software and hardware. For example, various components inside the communication node in the above embodiment can It is implemented through a variety of devices, including but not limited to: analog circuit devices, digital circuit devices, digital signal processing (DSP) circuits, programmable processors, application specific integrated circuits (ASIC), field programmable gate arrays (FPGA) , Programmable Logic Device (CPLD), etc.

In the present invention, "base station" may refer to a mobile communication data and/or control switching center with a certain transmit power and a certain coverage area, including, for example, resource allocation and scheduling, data reception and transmission and other functions. "User equipment" may refer to user mobile terminals, including, for example, mobile phones, laptops and other terminal equipment that can conduct wireless communication with base stations or micro base stations.

Furthermore, embodiments of the invention disclosed herein may be implemented on a computer program product. More specifically, the computer program product is a product that has a computer-readable medium with computer program logic encoded on the computer-readable medium, and when executed on a computing device, the computer program logic provides relevant operations to implement The above technical solution of the present invention. 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 embodiments of the invention. Such arrangements of the invention are typically provided as software, code and/or other data structures disposed or encoded on a computer readable medium, such as an optical medium (eg, a CD-ROM), a floppy or hard disk, or the like, or as one or more Other media for firmware or microcode on a ROM or RAM or PROM chip, or downloadable software images, shared databases, etc. in one or more modules. Software or firmware or such configuration may be installed on the computing device, so that one or more processors in the computing device execute the technical solutions described in the embodiments of the present invention.

In addition, each functional module or each feature of the communication node used in each of the above embodiments may be implemented or performed by a circuit, which is usually one or more integrated circuits. Circuitry 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, field programmable Gate arrays (FPGAs) or other programmable logic devices, discrete gate or transistor logic, or discrete hardware components, or any combination of the above. A general purpose processor may be a microprocessor, or the processor may be an existing processor, controller, microcontroller or state machine. The above-mentioned general processor or each circuit may be configured by a digital circuit, or may be configured by a logic circuit. In addition, when an advanced technology that can replace the current integrated circuit appears due to the advancement of semiconductor technology, the present invention can also use an integrated circuit obtained by utilizing the advanced technology.

Although the present invention has been described above in conjunction with its preferred embodiments, those skilled in the art will understand that various modifications, substitutions and changes can be made in the present invention without departing from the spirit and scope of the invention. Therefore, the present invention should not be limited by the above-described embodiments, but rather by the appended claims and their equivalents.

Claims (2)

1. A method performed by user equipment UE, characterized by including:

   Determine a sidelink positioning reference signal SL-PRS resource and its associated sidelink control information SCI; and

   Transmit the SL-PRS, and the physical sidelink control channel PSCCH carrying the SCI, where,

   The number of the lowest numbered resource block of the PSCCH is equal to in is the number of the lowest numbered resource block of the SL-PRS resource, i is the number of the SL-PRS resource, is the bandwidth of the SL-PRS resource.
2. A user device including:

   processor; and

   memory, which stores instructions,

   wherein the instructions, when executed by the processor, perform the method of claim 1 .