Positioning reference signal transmission method, device, and terminal device

Abstract

The present disclosure provides a positioning reference signal transmission method, an apparatus, and a terminal device applied in the field of communications, the positioning reference signal transmission method including: transmitting a physical sidelink control channel (PSCCH) and a physical sidelink shared channel (PSSCH) to a second device in a first resource pool, wherein sidelink control information (SCI) transmitted on the PSCCH or the PSSCH includes first indication information indicating related information of a sidelink positioning reference signal (SL-PRS).

Description

[Technical Field]

[0001] [CROSS-REFERENCE TO RELATED APPLICATIONS] This disclosure claims priority to a Chinese patent with application number 202210836614.8 filed in China on July 15, 2022, the entire contents of which are incorporated herein by reference.

[0002] The present disclosure relates to the technical field of communications, and in particular to a positioning reference signal transmission method, apparatus, and terminal device. [Background technology]

[0003] The 3rd Generation Partnership Project (3GPP) Release 16 studies and standardizes uplink and downlink positioning (NR Positioning) for cellular networks. Within the coverage area of ​​a cellular network, base stations transmit cell-specific downlink positioning reference signals (PRS), and terminals transmit uplink sounding reference signals (SRS) for uplink positioning.

[0004] In response, the terminal may measure the Reference Signal Time Difference (RSTD), or the Reference Signal Received Power (RSRP) of the Downlink (DL) PRS, or the time difference between the terminal's reception of the DL PRS and its transmission of the SRS.

[0005] The base station can calculate the location of the terminal (UE) by measuring the uplink reference signal arrival time (RTOA), the RSRP of the SRS, the time difference between the reception of the SRS by the base station (gNB) and the transmission of the DL PRS by the gNB, and angle measurements, and processing the measurements.

[0006] Research and standardization on sidelink (SL) positioning is actively underway. However, unlike new radio (NR) downlink and uplink, sidelink's main application scenarios include indoor, outdoor, and tunnel areas. In outdoor and tunnel areas, it is necessary to support positioning services with high movement speeds of up to 250 km / h. Therefore, to adapt to sidelink positioning technology, it is necessary to redesign the corresponding positioning measurement flow and resource allocation method between UEs according to their own resources and physical layer structural characteristics.

[0007] In the related art, a reference signal called SL-PRS is not introduced in sidelink communication, and no flow design for related positioning interactions has been made. When some reference signals in the related art are reused as SL-PRS, problems arise in accuracy and flexibility, and the Position Sensitive Detector (PSD) is also affected by the multiplexing of other signals. Summary of the Invention [Problem to be solved by the invention]

[0008] The embodiments of the present disclosure provide a method, apparatus, and terminal device for transmitting a positioning reference signal to solve the problem of the absence of related information for a sidelink positioning reference signal (SL-PRS) in sidelink communication in related art. [Means for solving the problem]

[0009] To solve the above problems, the embodiments of the present disclosure provide the following technical solutions.

[0010] In a first aspect, an embodiment of the present disclosure provides a positioning reference signal transmission method applied to a first device, the method comprising: 1st share A method for transmitting a positioning reference signal includes transmitting a physical sidelink control channel (PSCCH) and a physical sidelink shared channel (PSSCH) in a resource pool to a second device, wherein sidelink control information (SCI) transmitted on the PSCCH or the PSSCH includes first indication information indicating related information of a sidelink positioning reference signal (SL-PRS).

[0011] In a second aspect, an embodiment of the present disclosure provides a positioning reference signal transmission method applied to a second device, the method comprising: 1st share The present invention further provides a positioning reference signal transmission method, including a step of receiving a physical sidelink control channel (PSCCH) and a physical sidelink shared channel (PSSCH) transmitted from a first device in a resource pool, wherein sidelink control information (SCI) transmitted on the PSCCH or the PSSCH includes first indication information indicating related information of a sidelink positioning reference signal (SL-PRS).

[0012] In a third aspect, an embodiment of the present disclosure provides a positioning reference signal transmission device applied to a first device, comprising: 1st share The present invention further provides a positioning reference signal transmitting device including a transmitting module for transmitting a physical sidelink control channel (PSCCH) and a physical sidelink shared channel (PSSCH) in a resource pool to a second device, wherein the sidelink control information (SCI) transmitted on the PSCCH or the PSSCH includes first indication information indicating related information of a sidelink positioning reference signal (SL-PRS).

[0013] In a fourth aspect, an embodiment of the present disclosure provides a positioning reference signal transmission device applied to a second device, the positioning reference signal transmission device comprising: 1st share The present invention further provides a positioning reference signal transmitting device including a receiving module that receives a physical sidelink control channel (PSCCH) and a physical sidelink shared channel (PSSCH) transmitted from a first device in a resource pool, wherein the sidelink control information (SCI) transmitted on the PSCCH or the PSSCH includes first indication information indicating related information of a sidelink positioning reference signal (SL-PRS).

[0014] In a fifth aspect, an embodiment of the present disclosure further provides a terminal device that is a first device, the terminal device including a processor, a memory, and a program stored in the memory and executable by the processor, the program, when executed by the processor, implementing the steps of the positioning reference signal transmission method described in any one of the first aspects.

[0015] In a sixth aspect, an embodiment of the present disclosure further provides a terminal device that is a second device, the terminal device including a processor, a memory, and a program stored in the memory and executable by the processor, the program, when executed by the processor, implementing the steps of the positioning reference signal transmission method described in any one of the second aspects.

[0016] In a seventh aspect, an embodiment of the present disclosure further provides a readable storage medium having stored thereon a program that, when executed by the processor, realizes the steps of the positioning reference signal transmission method described in any one of the first aspect or the steps of the positioning reference signal transmission method described in any one of the second aspect. [Effects of the Invention]

[0017] According to the technical solution of the present disclosure, the first device is shareBy transmitting a physical sidelink control channel (PSCCH) and a physical sidelink shared channel (PSSCH) to a second device in a resource pool and adding first indication information indicating related information of a sidelink positioning reference signal (SL-PRS) to sidelink control information (SCI) transmitted on the PSCCH or the PSSCH, it is possible to realize the introduction of related information of a sidelink positioning reference signal (SL-PRS) into sidelink communication in the related technology. [Brief explanation of the drawings]

[0018] [Figure 1] FIG. 1 illustrates a structure of a Rel-16 sidelink channel according to an embodiment of the present disclosure. [Figure 2] FIG. 1 is a diagram illustrating a structure of a resource block according to an embodiment of the present disclosure (part 1). [Figure 3] FIG. 2 is a diagram showing the structure of a resource block according to an embodiment of the present disclosure (part 2). [Figure 4] FIG. 10 illustrates a timing diagram of resource selection according to an embodiment of the present disclosure. [Figure 5] 4 is a flowchart of a positioning reference signal transmission method applied to a first device according to an embodiment of the present disclosure. [Figure 6] FIG. 10 is a diagram showing the structure of a resource block according to an embodiment of the present disclosure (part 3). [Figure 7] FIG. 1 illustrates structural mapping of SL-PRS according to an embodiment of the present disclosure. [Figure 8] 1 is a flowchart of a positioning reference signal transmission method applied to a second device according to an embodiment of the present disclosure. [Figure 9] FIG. 2 is a diagram illustrating the structure of a positioning reference signal transmission device applied to a first device according to an embodiment of the present disclosure. [Figure 10] FIG. 10 is a diagram illustrating the structure of a positioning reference signal transmission device applied to a second device according to an embodiment of the present disclosure. [Figure 11] FIG. 2 is a diagram illustrating the structure of a terminal device according to an embodiment of the present disclosure. DETAILED DESCRIPTION OF THE INVENTION

[0019] In order to make the objectives, technical solutions and advantages of the present disclosure clearer, the present disclosure will be described in detail below with reference to the drawings and specific embodiments.

[0020] Prior to describing specific embodiments, the following description will be given.

[0021] The Rel-16 NR sidelink, physical sidelink control channel (PSCCH) and physical sidelink shared channel (PSSCH) adopt the time division multiplexing (TDM) + frequency division multiplexing (FDM) method. As shown in Figure 1, the Rel-16 sidelink also introduces a second-stage SCI that is transmitted on the PSSCH along with data.

[0022] The 1st-stage SCI is transmitted on the PSCCH and indicates information such as the time-frequency resource location, priority, period, and corresponding modulation and coding scheme (MCS) occupied by the current transport block (TB), and no corresponding sidelink PRS is introduced.

[0023] Regarding the PRS frequency domain pattern, the frequency domain pattern is information such as the comb size used for the PRS and the starting position in each resource block (RB) in each time domain symbol, and specifically, it may include, but is not limited to, the comb size, the starting mapping resource element (RE) position in each RB of the starting symbol, and the comb offset of the RE granularity in each symbol.

[0024] When REs are repeatedly mapped to each symbol, only the RE mapping positions within each RB in the frequency domain are required. As shown in Figures 2 and 3, for UE1, the comb size is 4, the starting mapping RE position in each RB of the starting symbol is index 0, and the RE comb offset for each symbol is {0, 2, 1, 3}.

[0025] When multiple UEs share similar PRS-dedicated resources, to ensure orthogonality of PRSs transmitted between different UEs, the PRS resource mapping location and the OCC (or CS) to be used for each transmitting UE may be associated with the user identity (e.g., source ID) of the transmitting or receiving UE or the mapping resource location of the PRS request signaling, or may be configured by the network.

[0026] The PRS sequence can be a Gold sequence (corresponding to an Orthogonal Cover Code (OCC)) or a ZC (ZadOff-Chu) sequence (corresponding to a cyclic shift (CS)).

[0027] For Rel-16 NR positioning, two types of positioning reference signals are introduced: a downlink positioning reference signal (PRS) and an uplink sounding reference signal (SRS) for positioning.

[0028] The downlink positioning reference signal (PRS) uses Gold sequences and introduces PRS resource, PRS resource set, and PRS positioning frequency layer designs. The PRS resource frequency domain can adopt a comb structure, and the time domain can occupy multiple consecutive OFDM symbols. A single port is used, with a maximum bandwidth of no more than 272 PRBs and a minimum bandwidth of no less than 24 PRBs.

[0029] The uplink sounding reference signal for positioning (SRS for positioning) employs a ZC sequence, which can continuously occupy multiple Orthogonal Frequency Division Multiplexing (OFDM) symbols in the time domain. It also employs a comb structure in the frequency domain, which can easily support frequency division multiplexing of multiple uplink sounding reference signals for positioning (SRS for positioning, SRS-POS) in the same OFDM symbol.

[0030] The advantage of using a single port over dual-port transmission is that it can improve the power spectral density of the SRS-POS signal at the base station receiver, thereby improving the coverage and quality of the SRS-POS signal. The maximum supported bandwidth in the frequency domain must not exceed 272 PRBs and must not be lower than 4 PRBs. SRS-POS can support three resource type configurations: periodic, semi-persistent, and aperiodic.

[0031] Release 16 NR positioning can support "Radio Access Technology Independent" (RAT-independent) positioning technologies, including Global Navigation Satellite System (GNSS), atmospheric pressure sensor positioning, Wireless Local Area Network (WLAN) positioning, inertial navigation positioning, Bluetooth positioning, and positioning using terrestrial beacon systems.

[0032] Release 16 NR positioning explored "RAT-dependent" and hybrid positioning techniques to improve positioning accuracy.

[0033] As the main solution, the gNB can periodically transmit downlink PRS to support downlink time difference of arrival (DL-TDOA), downlink angle of departure (DL-AoD) measurements, and enhanced cell identification (E-CID) detection; the terminal can transmit uplink SRS for positioning to support uplink time difference of arrival (UL-TDOA) and uplink angle of arrival (UL-AoA) measurements, and can support combined uplink and downlink round trip time (RTT) measurements, or perform positioning based on a multi-round trip time (Multi-RTT) method.

[0034] The overall positioning flow of NR / LTE positioning is managed, controlled, and scheduled by the base station and the Location Management Function (LMF).

[0035] New Radio-Vehicle to everything (NR-V2X) information exchange employs a resource exclusion technique based on sensing and Reference Signal Receiving Power (RSRP). As shown in Figure 4, during the sensing window, the UE continuously receives and decodes, and measures RSRP. When a service package arrives at time n, the higher layer signaling triggers the UE's resource selection process as follows:

[0036] (1) As shown in Figure 4, a candidate single slot resource R x,y is t in [n+T1,n+T2] time y x+j consecutive subchannels in a slot.

[0037] where 0≦T1≦T proc,1 Then, T proc,1 represents the UE transmission processing time delay (including the sensing-based resource selection time, the PSCCH transmission preparation time, and the SL-PRS transmission preparation time), and its possible values ​​may be {3, 5, 9, 17} physical slots, corresponding to the sub-carrier space (SCS) {15, 30, 60, 120} kHz, respectively; T 2min ≦T2≦Remaining PDB, and T 2min is the minimum value of T2 configured in the upper layer parameter t2min_SelectionWindow (selection window), and remaining PDB is the remaining delay budget for data packets.

[0038] The total number of candidate single slot resources is M total is.

[0039] (2) The UE detects the time in the sensing window [n-T0, nT proc,0) for PSCCH, SL-PRS decoding and measurement of SL-PRS or physical sidelink control channel reference signal received power (PSCCH Reference Signal Received Power, PSCCH-RSRP).

[0040] T0 is the length of the sensing window configured in the upper layer, and T proc,0 is the time for the UE to process the previous sensing result, and its possible values ​​may be {1, 1, 2, 4} physical slots, corresponding to SCS {15, 30, 60, 120} kHz, respectively.

[0041] (3)Th(p i ,p j ) denotes the i-th RSRP field in sl-ThresSL-PRS-RSRP-List-r16, where i=p i +(p j -1)*8, and p i represents the priority indicated by the received SCI, and p j represents the transmission priority of the transmitting UE, and p j =prio TX This becomes:

[0042] (4) Initialization S A is the set of all candidate single-slot resources.

[0043] (5) Removing candidate slots corresponding to skip slots. Removing candidate slots corresponding to the skip slots may be understood as removing candidate slots corresponding to non-monitored slots. Non-monitored slots are slots (e.g., y) that cannot be sensed due to the influence of half-duplex. For all periods (e.g., 20 ms, 50 ms, 100 ms) configured in the system, all candidate slots (i.e., y, y+20*2) at the corresponding positions are subsequently removed. μ , y+40*2 μ , y+50*2 μ, y+60*2 μ , y+80*2 μ , y+100*2 μ ...etc., slots in the selection window).

[0044] (6) a. The RSRP measurement value indicated in the received Sidelink Control Information (SCI) is Th(prio RX ,prio TX ) and b. The spare resource indicated by the received SCI is higher than the TB transmitted on the candidate resource y or the subsequent y+x*P step *2 μ and partially or completely overlap with the transport block (TB) transmitted on the candidate resource in P, where P step is the resource reservation period (converted to a logical slot), x represents the number of subsequent periods and takes an integer, and μ is uniquely determined by the subcarrier spacing (SCS) of the resource pool.

[0045] (7)S A The remaining resources in total If it is smaller than Th(p i ,p j ) by 3 dB and return to step 4). TX For X, the upper layer parameter sl-xPercentage(prio TX )

[0046] (8) The UE sends S A Report.

[0047] (9) The upper layer determines if the constraint of satisfying the Hybrid Automatic Repeat Request (HARQ) RTT is satisfied. A At, the initial transmission and retransmission resources are randomly selected for the current TB.

[0048] Based on this, a re-evaluation mechanism and a pre-emption mechanism are added to resolve resource conflicts caused by non-periodic burst services and to guarantee the reliability of high-priority services, respectively.

[0049] Here, the re-evaluation mechanism, which is mainly for unreserved resources, determines whether a collision occurs in the selected resource based on the latest sensing result before transmitting the resource, and performs re-selection if a collision occurs, thereby reducing the probability of resource collision. The pre-emption mechanism, which is mainly for already reserved resources, triggers a low-priority UE to perform resource re-selection if it finds that an already reserved resource has been preempted by a high-priority UE, thereby avoiding collision between high and low priorities and ensuring the performance of high-priority services.

[0050] As shown in Figure 4, the time for initial transmission is m1, the time for reselection is m2, the start time for reevaluation is n and the end time is m1-T3, and the start time for preemption is m1 and the end time is m2-T3.

[0051] The present disclosure provides a method, apparatus, and terminal device for transmitting a positioning reference signal to address the problem of the absence of related information for a sidelink positioning reference signal (SL-PRS) in sidelink communication in related technologies.

[0052] As shown in FIG. 5 , a positioning reference signal transmission method according to an embodiment of the present disclosure is a positioning reference signal transmission method applied to a first device, including: 1st shareThe method includes a step 501 of transmitting a physical sidelink control channel (PSCCH) and a physical sidelink shared channel (PSSCH) in a resource pool to a second device, wherein sidelink control information (SCI) transmitted on the PSCCH or the PSSCH includes first indication information indicating related information of a sidelink positioning reference signal (SL-PRS).

[0053] The first device is a UE of 3GPP Release 18 (R18).

[0054] 1st share The resource pool is a resource pool shared by 3GPP Release 16 (R16) and 3GPP Release 17 (R17) UEs. That is, to implement the SL-positioning technology, transmitting SL-PRS-related information in the R16 and R17 resource pools is one possible way to save sidelink resources and improve resource utilization.

[0055] Optionally, the relevant information of the SL-PRS is: Information indicating whether the SL-PRS is included in the current transmission; and The first device is the first share information indicating whether the device has the capability to perform sidelink positioning in the resource pool; and and resource configuration information of the SL-PRS.

[0056] In this embodiment, the first indication information is included in reserved bits of a 1st-stage SCI transmitted on the PSCCH, or a new 2nd-stage SCI format is introduced into the PSSCH to include the first indication information.

[0057] Here, the information indicating whether the SL-PRS is included in the current transmission may be identification information, which is either "1" or "0", where "1" indicates that the SL-PRS is transmitted together with the PRS and "0" indicates that the PRS is not included in the current slot, and preferably, the identification information is transmitted in a reserved bit in SCI-1A.

[0058] For example, including the first indication information in the reserved bits of the first stage SCI transmitted on the PSCCH may be to indicate whether or not the current transport block includes an SL-PRS using one bit of information from the reserved bits in the first stage SCI, or to indicate time domain pattern information and / or frequency domain pattern information of the SL-PRS in the current transport block using two bits of information from the reserved bits in the first stage SCI.

[0059] Specifically, it can indicate the pattern index information corresponding to the SL-PRS in the current transport block, and the supportable pattern information set should be configured by higher layer parameters or pre-configured.

[0060] Also, for example, introducing a new second-stage SCI format into the PSSCH to include the first indication information may be introducing a new second-stage SCI format, such as SCI format 2-D for scheduling decoding of the SL-PRS and / or PSSCH, to indicate time-frequency resource configuration information of the SL-PRS.

[0061] In the embodiments of the present disclosure, a demodulation reference signal (DMRS) or a channel-state information reference signal (CSI-RS) can be used as an SL-PRS for positioning measurement.

[0062] In this embodiment, when an R18 UE transmits an SL-PRS, the overall channel structure should be the same as that of R16, and the information content in the formats of the first-stage SCI and second-stage SCI in the related art remains unchanged.

[0063] Optionally, the SCI further includes priority information, and the priority information is: a minimum value of a first priority value corresponding to the priority of the PSSCH and a second priority value corresponding to the priority of the SL-PRS; The priority of the PSSCH; and the priority of the SL-PRS.

[0064] The method for determining the priority information included in the SCI is as follows: A method in which the priority is determined by both the priority of the PSSCH and the priority of the SL-PRS, and the minimum of the two priority values ​​is used as the priority information included in the SCI; A method for including the priority of the PSSCH in the SCI; and a method for including the priority of the SL-PRS in the SCI.

[0065] Here, the priority of the SL-PRS is: Configuration by upper layer parameters; being pre-configured; Priority information included in the positioning initiation signaling; and priority information of the corresponding positioning service.

[0066] Optionally, the method may further include the step of: when the first device needs to process a transport block including the SL-PRS and a transport block not including the SL-PRS simultaneously; a step of preferentially processing a transport block with a higher priority based on a comparison result between the first priority and the second priority; and if the first priority and the second priority are similar, randomly selecting and processing the transport block.

[0067] wherein the first priority is a priority corresponding to a transport block including the SL-PRS; The second priority is a priority corresponding to a transport block that does not include the SL-PRS.

[0068] That is, when the first device needs to process a transport block including the SL-PRS and a transport block not including the SL-PRS simultaneously, it compares the priority of the transport block including the SL-PRS with the priority of the transport block not including the SL-PRS, and processes the transport block with the higher priority first.If the two transport blocks have the same priority, the first device randomly processes either the transport block including the SL-PRS or the transport block not including the SL-PRS.

[0069] Optionally, the result of comparing the first priority and the second priority is: The first priority is pre-configured to be higher than the second priority; and the second priority being preconfigured to be higher than the first priority.

[0070] Specifically, the first device needs to simultaneously process a transport block including the SL-PRS and a transport block not including the SL-PRS, The first device needs to simultaneously receive a transport block including the SL-PRS and a transport block not including the SL-PRS; the first device needs to simultaneously receive a transport block including the SL-PRS and transmit a transport block not including the SL-PRS; The first device needs to simultaneously transmit a transport block including the SL-PRS and transmit and receive a transport block not including the SL-PRS; and and the first device needs to simultaneously transmit a transport block including the SL-PRS and receive a transport block not including the SL-PRS.

[0071] In the method, when the first device needs to simultaneously process a transport block including the SL-PRS and a transport block not including the SL-PRS includes the first device needs to simultaneously receive a transport block including the SL-PRS and a transport block not including the SL-PRS, a step of receiving a transport block including the SL-PRS preferentially, the transport block being pre-configured such that a first priority is higher than a second priority; a step of preferentially receiving a transport block that does not include the SL-PRS, the transport block being pre-configured such that a first priority is lower than a second priority; If the first priority and the second priority are the same, the method further includes at least one of the steps of randomly receiving a transport block including the SL-PRS and a transport block not including the SL-PRS.

[0072] wherein the first priority is a priority corresponding to a transport block including the SL-PRS; The second priority is a priority corresponding to a transport block that does not include the SL-PRS.

[0073] In the method, when the first device needs to simultaneously process a transport block including the SL-PRS and a transport block not including the SL-PRS includes the first device needs to simultaneously receive a transport block including the SL-PRS and transmit a transport block not including the SL-PRS, a step of receiving a transport block including the SL-PRS preferentially, the transport block being pre-configured such that a first priority is higher than a second priority; a step of preferentially transmitting a transport block that does not include the SL-PRS, the transport block being pre-configured such that a first priority is lower than a second priority; If the first priority and the second priority are similar, the method further includes at least one of randomly receiving a transport block including the SL-PRS or randomly transmitting a transport block not including the SL-PRS.

[0074] wherein the first priority is a priority corresponding to a transport block including the SL-PRS; The second priority is a priority corresponding to a transport block that does not include the SL-PRS.

[0075] In the method, when the first device needs to simultaneously process a transport block including the SL-PRS and a transport block not including the SL-PRS includes the first device needs to simultaneously transmit a transport block including the SL-PRS and a transport block not including the SL-PRS, a step of preferentially transmitting a transport block including the SL-PRS, the transport block being pre-configured such that a first priority is higher than a second priority; a step of preferentially transmitting a transport block that does not include the SL-PRS, the transport block being pre-configured such that a first priority is lower than a second priority; and if the first priority and the second priority are similar, randomly transmitting either a transport block including the SL-PRS or a transport block not including the SL-PRS.

[0076] wherein the first priority is a priority corresponding to a transport block including the SL-PRS; The second priority is a priority corresponding to a transport block that does not include the SL-PRS.

[0077] In the method, when the first device needs to simultaneously process a transport block including the SL-PRS and a transport block not including the SL-PRS includes the first device needs to simultaneously transmit a transport block including the SL-PRS and receive a transport block not including the SL-PRS, a step of preferentially transmitting a transport block including the SL-PRS, the transport block being pre-configured such that a first priority is higher than a second priority; a step of preferentially receiving a transport block that does not include the SL-PRS, the transport block being pre-configured such that a first priority is lower than a second priority; If the first priority and the second priority are similar, the method further includes at least one of randomly transmitting a transport block including the SL-PRS or randomly receiving a transport block not including the SL-PRS.

[0078] wherein the first priority is a priority corresponding to a transport block including the SL-PRS; The second priority is a priority corresponding to a transport block that does not include the SL-PRS.

[0079] Alternatively, the resource configuration information of the SL-PRS is configured by higher layer parameters or is pre-configured.

[0080] Here, the method for configuring the resource configuration information of the SL-PRS is as follows: When the first device and the second device are in unicast communication, the method is configured or pre-configured by PC5-RRC signaling exchange; The method includes at least one of a resource pool configuration or a method based on being pre-configured.

[0081] Specifically, the resource configuration information of the SL-PRS is configured by upper layer parameters or configured in advance, and the configuration method of the resource configuration information of the SL-PRS is as follows: When the first device and the second device communicate via unicast and need to perform positioning-related exchange flows, the first device and the second device can perform PC5-RRC signaling exchange, and the PC5-RRC exchange completes the reconfiguration or configuration of Radio Resource Control (RRC) for SL-PRS, and determines the SL-PRS resource configuration status of the link between the first device and the second device. In this case, the SL-PRS resource configuration information is only valid between the first device and the second device and does not affect devices other than the link. The resource configuration information of the SL-PRS is configured based on a resource pool, and in this case, the resource configuration information of the SL-PRS includes at least one of the following: the resource configuration information is valid for any device that transmits or receives within the entire resource pool.

[0082] Optionally, the resource configuration information of the SL-PRS is Priority information of the SL-PRS; Frequency domain resource configuration information of the SL-PRS; time domain resource configuration information of the SL-PRS; Code domain configuration information (code domain) of the SL-PRS; Pattern information of time domain symbol positions occupied by the SL-PRS; a resource reservation period of the SL-PRS; the number of resource reservation periods of the SL-PRS; the number of ports of the SL-PRS; and the offset slot number.

[0083] Here, the frequency domain resource configuration information of the SL-PRS is a starting physical resource block (PRB) of the SL-PRS; a starting subchannel position of the SL-PRS; the bandwidth of the SL-PRS; The comb size of the SL-PRS; a starting resource unit (RE) position of the SL-PRS; a comb offset of the SL-PRS; and frequency domain pattern information of the SL-PRS.

[0084] The time domain resource configuration information of the SL-PRS is a slot position occupied by the SL-PRS; a starting symbol position in the slot of the SL-PRS; and the number of symbols the SL-PRS occupies in a slot.

[0085] The SL-PRS code area configuration information is a cyclic shift of the SL-PRS; and and an orthogonal cover code (OCC) of the SL-PRS.

[0086] That is, the time-frequency resource configuration information of SL-PRS is HARQ process number, and New data instructions; A redundant version, Source ID and Destination ID, Hybrid Automatic Repeat Response (HARQ) feedback switch indication; Zone ID and a range requirement; SL-PRS priority information, Frequency domain resource configuration information of SL-PRS; time domain resource configuration information of SL-PRS; 1st share If the resource pool can support non-contiguous mapping of SL-PRS in the time domain, the time-frequency resource configuration information is share Pattern information of time domain symbol positions occupied by SL-PRSs that can be supported by the resource pool; The resource reservation period of SL-PRS and The number of resource reservation periods of SL-PRS, The number of ports on the SL-PRS and and an offset slot number.

[0087] Here, the frequency domain resource configuration information of the SL-PRS includes at least one of the following: the SL-PRS starting PRB, the SL-PRS starting subchannel position, the SL-PRS bandwidth (the number of PRBs or the number of subchannels), the SL-PRS comb size, the SL-PRS starting resource element (RE) position, the SL-PRS comb offset, the SL-PRS cyclic shift, the SL-PRS orthogonal cover code (OCC), and the SL-PRS frequency domain pattern index.

[0088] The time domain resource configuration information of the SL-PRS includes at least one of the slot position occupied by the SL-PRS (number of subframes (subframe Num) + number of slots (slot Num)), the starting symbol position in the slot of the SL-PRS, and the number of symbols occupied by the SL-PRS in the slot.

[0089] The positioning scheduling information and the time domain interval information of the associated positioning channel require a parameter called offset slot number only if cross-slot scheduling can be supported.

[0090] The time domain pattern of the SL-PR and the frequency domain pattern of the SL-PRS will be described below. The time domain pattern information of the SL-PRS is relatively similar to the PSSCH DMRS pattern information, and is configured by higher layer parameters or pre-configured. The number of time domain symbols of the SL-PRS and the position of each symbol are shown in Table 1 below.

[0091] [Table 1]

[0092] Frequency domain pattern information of SL-PRS To explain the frequency domain pattern of a PRS, the frequency domain pattern of the PRS is information such as the comb size adopted by the PRS and the starting position in each RB in each time domain symbol.

[0093] Specifically, the frequency domain pattern of a PRS includes, but is not limited to, a comb size, a starting mapping RE position in each RB of a starting symbol, and a mapping offset (comb offset) of RE granularity in each symbol. When repeatedly mapping to each symbol, only the RE mapping position in each RB in the frequency domain is required. Referring to Figures 3 and 6, as shown in Figure 6, for UE2 in Figure 6, for UE1 in Figure 3, the comb size is 4, the starting mapping RE position in each RB of a starting symbol is index = 0, and the RE offset in each symbol is {0, 2, 1, 3}.

[0094] Optionally, as shown in FIG. 7, the mapping rule of the SL-PRS is: The first stage of mapping to symbols containing SCI is impossible, The second stage of mapping to symbols containing SCI is impossible, The inability to map to symbols containing demodulation reference signals (DMRS); Mapping to automatic gain control (AGC) symbols is not possible; Mapping to guard period (GP) symbols is not possible, and Mapping to physical sidelink feedback channel (PSFCH) symbols is not possible; and and the mapping to any symbol is possible.

[0095] Optionally, the method further comprises: When the PSSCH resource element (RE) is occupied by the SL-PRS, a method of mapping the PSSCH to a corresponding RE by puncturing an RE occupied by the SL-PRS in the PSSCH or an entire symbol occupied by the SL-PRS; If the SL-PRS is a demodulation reference signal (DMRS) or a channel state information reference signal (CSI-RS), the PSSCH is mapped to a corresponding RE by bypassing an RE occupied by the SL-PRS or an entire symbol occupied by the SL-PRS according to a rate matching mapping scheme; A method of mapping the SL-PRS to the PSSCH when a first priority value corresponding to the priority of the PSSCH is greater than a second priority value corresponding to the priority of the SL-PRS; and a method of mapping the SL-PRS to the PSSCH when a first priority value, which is a value corresponding to the priority of the PSSCH, is greater than a predetermined threshold and the first priority value is greater than the second priority value, which is a value corresponding to the priority of the SL-PRS.

[0096] Specifically, a mapping scheme for mapping the PSSCH to the corresponding RE by puncturing the RE occupied by the SL-PRS in the PSSCH or the entire symbol occupied by the SL-PRS has better compatibility with R16 and R17.

[0097] When a demodulation reference signal (DMRS) or a channel state information reference signal (CSI-RS) is reused as an SL-PRS for positioning measurement, it is necessary to restrict data mapping to the DMRS or CSI-RS symbols at this time, and the PSSCH is mapped to the corresponding RE by bypassing the RE occupied by the SL-PRS or the entire symbol occupied by the SL-PRS according to a rate matching mapping method, and such a mapping method does not affect the demodulation performance of an R18 UE.

[0098] If the priority value of the SL-PRS is less than the priority value of the PSSCH, the SL-PRS can be mapped to the PSSCH.

[0099] A priority threshold P (pre-set threshold) is configured by higher layer parameters or pre-configured, and an SL-PRS can be mapped to a PSSCH only if the priority value of the PSSCH is greater than P and the priority value of the SL-PRS is less than the priority value of the PSSCH.

[0100] Optionally, the method further comprises: determining a transport block size of the PSSCH based on overhead information of an SL-PRS; The overhead information of the SL-PRS is Configuration by upper layer parameters; being pre-configured; and SL-PRS overhead indication information in the SCI.

[0101] That is, when determining the transport block size of the PSSCH, the overhead information of the SL-PRS is The overhead of the SL-PRS is configured by higher layer parameters; Pre-configuring the overhead of the SL-PRS; The SL-PRS overhead is determined based on at least one of the following: the SL-PRS overhead is indicated by the SCI (indicated by the SL-PRS overhead indication information in the SCI).

[0102] Optionally, the method further comprises: The cyclic redundancy check bits (CRC bits) of the 1st-stage SCI, The source ID in the second stage SCI, The destination ID in the second stage SCI, The number of the slot in which the SL-PRS is located; and a sequence ID (SL-PRS ID) of the SL-PRS configured by a higher layer parameter.

[0103] Optionally, the method further comprises: receiving second instruction information transmitted from the second device; and adding the first indication information to the SCI transmitted on the PSSCH or the PSCCH based on the second indication information, The second instruction information is for the second device to share This indicates whether or not the resource pool has the capability to perform sidelink positioning.

[0104] In another preferred embodiment, before transmitting the PSCCH and the PSSCH to the second device, the first device (R18 UE) receives second indication information transmitted from the second device, and then feeds back first indication information based on the second indication information, and the second indication information indicates that the second device is using a shared resource pool (the first share This indicates whether or not the SL-positioning is possible in the resource pool.

[0105] The positioning reference signal transmission method according to the embodiments of the present disclosure fully considers forward compatibility, and the R18 sidelink positioning UE does not affect the sensing process and PSSCH decoding process of R16 and R17 UEs, and can ensure the normal operation of R18 without changing the resource allocation mechanism of R16 and R17.

[0106] As shown in FIG. 8 , a positioning reference signal transmission method according to an embodiment of the present disclosure is a positioning reference signal transmission method applied to a second device, including: 1st shareThe method includes a step 801 of receiving, in a resource pool, a physical sidelink control channel (PSCCH) and a physical sidelink shared channel (PSSCH) transmitted from a first device, wherein the sidelink control information (SCI) transmitted on the PSCCH or the PSSCH includes first indication information indicating related information of a sidelink positioning reference signal (SL-PRS).

[0107] In an embodiment of the present disclosure, the first device is share By transmitting a physical sidelink control channel (PSCCH) and a physical sidelink shared channel (PSSCH) to a second device in a resource pool and adding first indication information indicating related information of a sidelink positioning reference signal (SL-PRS) to sidelink control information (SCI) transmitted on the PSCCH or the PSSCH, it is possible to realize the introduction of related information of a sidelink positioning reference signal (SL-PRS) into sidelink communication in the related technology.

[0108] 1st share The resource pool is a resource pool shared by 3GPP Release 16 (R16) and 3GPP Release 17 (R17) UEs. That is, to realize the SL-positioning technology, transmitting SL-PRS-related information in the R16 and R17 resource pools is one possible way to save sidelink resources and improve resource utilization.

[0109] Optionally, the relevant information of the SL-PRS is: Information indicating whether the SL-PRS is included in the current transmission; and information indicating whether the first device has the capability to perform sidelink positioning in a shared resource pool; and and resource configuration information of the SL-PRS.

[0110] Alternatively, the method may further include, if the SL-PRS related information indicates that the SL-PRS is included in the current transmission: determining resource configuration information of the SL-PRS based on the SCI; determining resource configuration information for the SL-PRS based on higher layer parameters; and determining resource configuration information for the SL-PRS based on preconfigured parameters.

[0111] That is, when the SCI includes an SL-PRS, the method for determining the resource configuration information of the SL-PRS is as follows: A method for determining resource configuration information of the SL-PRS based on the SCI; A method for determining resource configuration information of the SL-PRS based on upper layer parameters; and determining resource configuration information for the SL-PRS based on preconfigured parameters.

[0112] Optionally, the method further comprises: share before receiving a physical sidelink control channel (PSCCH) and a physical sidelink shared channel (PSSCH) transmitted from the first device in the resource pool, The method further includes transmitting second instruction information to the first device so that the first device adds the first instruction information to the PSCCH or SCI transmitted on the PSSCH based on the second instruction information; The second instruction information is share This indicates whether or not the resource pool has the capability to perform sidelink positioning.

[0113] In another preferred embodiment, before transmitting the PSCCH and the PSSCH to the second device, the first device (R18 UE) receives second indication information transmitted from the second device, and then feeds back first indication information based on the second indication information, and the second indication information indicates that the second device is using a shared resource pool (the first share This indicates whether or not the SL-positioning is possible in the resource pool.

[0114] As shown in FIG. 9 , an embodiment of the present disclosure is a positioning reference signal transmitting device applied to a first device, comprising: 1st share The device includes: a transmitting module 901 for transmitting a physical sidelink control channel (PSCCH) and a physical sidelink shared channel (PSSCH) in a resource pool to a second device, wherein the sidelink control information (SCI) transmitted on the PSCCH or the PSSCH includes first indication information indicating related information of a sidelink positioning reference signal (SL-PRS).

[0115] Optionally, the relevant information of the SL-PRS is: Information indicating whether the SL-PRS is included in the current transmission; and The first device is the first share information indicating whether the device has the capability to perform sidelink positioning in the resource pool; and and resource configuration information of the SL-PRS.

[0116] Optionally, the SCI further includes priority information, and the priority information is: a minimum value of a first priority value corresponding to the priority of the PSSCH and a second priority value corresponding to the priority of the SL-PRS; The priority of the PSSCH; and the priority of the SL-PRS.

[0117] Optionally, the priority of the SL-PRS is: Configuration by upper layer parameters; being pre-configured; Priority information included in the positioning initiation signaling; and priority information of the corresponding positioning service.

[0118] Optionally, the apparatus further comprises a first processing module when the first device needs to process a transport block including the SL-PRS and a transport block not including the SL-PRS simultaneously; The first processing module Prioritizing processing of a transport block with a higher priority based on a comparison result between the first priority and the second priority; if the first priority and the second priority are similar, randomly selecting and processing the transport block; the first priority is a priority corresponding to a transport block including the SL-PRS; The second priority is a priority corresponding to a transport block that does not include the SL-PRS.

[0119] Optionally, the result of comparing the first priority and the second priority is: The first priority is pre-configured to be higher than the second priority; and the second priority being preconfigured to be higher than the first priority.

[0120] Alternatively, the resource configuration information of the SL-PRS is configured by a higher layer parameter or is pre-configured; The method for configuring the resource configuration information of the SL-PRS is as follows: When the first device and the second device are in unicast communication, the method is configured or pre-configured by PC5-RRC signaling exchange; The method includes at least one of a resource pool configuration or a method based on being pre-configured.

[0121] Optionally, the resource configuration information of the SL-PRS is Priority information of the SL-PRS; Frequency domain resource configuration information of the SL-PRS; time domain resource configuration information of the SL-PRS; Code area configuration information of the SL-PRS; Pattern information of time domain symbol positions occupied by the SL-PRS; a resource reservation period of the SL-PRS; the number of resource reservation periods of the SL-PRS; the number of ports of the SL-PRS; and the offset slot number.

[0122] Optionally, the frequency domain resource configuration information of the SL-PRS is a starting physical resource block (PRB) of the SL-PRS; a starting subchannel position of the SL-PRS; the bandwidth of the SL-PRS; The comb size of the SL-PRS; a starting resource unit (RE) position of the SL-PRS; a comb offset of the SL-PRS; and frequency domain pattern information of the SL-PRS.

[0123] Optionally, the time domain resource configuration information of the SL-PRS is a slot position occupied by the SL-PRS; a starting symbol position in the slot of the SL-PRS; and the number of symbols the SL-PRS occupies in a slot.

[0124] Optionally, the code area configuration information of the SL-PRS is a cyclic shift of the SL-PRS; and and an orthogonal cover code (OCC) of the SL-PRS.

[0125] Optionally, the mapping rule of the SL-PRS is: The first stage of mapping to symbols containing SCI is impossible, The second stage of mapping to symbols containing SCI is impossible, The inability to map to symbols containing demodulation reference signals (DMRS); Mapping to automatic gain control (AGC) symbols is not possible; Mapping to the guard period (GP) symbol is not possible, and Mapping to physical sidelink feedback channel (PSFCH) symbols is not possible; and and the mapping to any symbol is possible.

[0126] Optionally, the device comprises: When the PSSCH resource element (RE) is occupied by the SL-PRS, a method of mapping the PSSCH to a corresponding RE by puncturing an RE occupied by the SL-PRS in the PSSCH or an entire symbol occupied by the SL-PRS; If the SL-PRS is a demodulation reference signal (DMRS) or a channel state information reference signal (CSI-RS), the PSSCH is mapped to a corresponding RE by bypassing an RE occupied by the SL-PRS or an entire symbol occupied by the SL-PRS according to a rate matching mapping scheme; A method of mapping the SL-PRS to the PSSCH when a first priority value corresponding to the priority of the PSSCH is greater than a second priority value corresponding to the priority of the SL-PRS; and a method of mapping the SL-PRS to the PSSCH when a first priority value, which is a value corresponding to the priority of the PSSCH, is greater than a preset threshold and the first priority value is greater than the second priority value, which is a value corresponding to the priority of the SL-PRS.

[0127] Optionally, the device comprises: The radio equipment further includes a first determination module for determining a transport block size of the PSSCH based on overhead information of an SL-PRS.

[0128] Here, the overhead information of the SL-PRS is Configuration by upper layer parameters; being pre-configured; and SL-PRS overhead indication information in the SCI.

[0129] Optionally, the device comprises: The cyclic redundancy check bits of the first stage SCI, Source ID in the second stage SCI, The destination ID in the second stage SCI, The slot number in which the SL-PRS is located; and a sequence ID of the SL-PRS configured by a higher layer parameter.

[0130] Optionally, the device comprises: an information receiving module that receives second instruction information transmitted from the second device; The radio communication device further includes a third processing module that adds the first indication information to the SCI transmitted on the PSSCH or the PSCCH based on the second indication information.

[0131] Here, the second instruction information is information that the second device share This indicates whether or not the resource pool has the capability to perform sidelink positioning.

[0132] Furthermore, since the positioning reference signal transmission device applied to the first device according to the embodiments of the present disclosure is capable of executing the positioning reference signal transmission method applied to the above-mentioned first device, all of the embodiments of the positioning reference signal transmission method applied to the above-mentioned first device can be applied to the device, and the same or similar technical effects can be achieved.

[0133] As shown in FIG. 10 , an embodiment of the present disclosure is a positioning reference signal transmitting device applied to a second device, comprising: 1st share The present invention further provides a positioning reference signal transmitting device including a receiving module 1001 for receiving a physical sidelink control channel (PSCCH) and a physical sidelink shared channel (PSSCH) transmitted from a first device in a resource pool, wherein the sidelink control information (SCI) transmitted on the PSCCH or the PSSCH includes first indication information indicating related information of a sidelink positioning reference signal (SL-PRS).

[0134] Optionally, the relevant information of the SL-PRS is: Information indicating whether the SL-PRS is included in the current transmission; and information indicating whether the first device has the capability to perform sidelink positioning in a shared resource pool; and and resource configuration information of the SL-PRS.

[0135] Alternatively, if the SL-PRS related information indicates that the SL-PRS is included in the current transmission, the device: determining resource configuration information of the SL-PRS based on the SCI; determining resource configuration information for the SL-PRS based on higher layer parameters; and determining resource configuration information for the SL-PRS based on preconfigured parameters.

[0136] Optionally, the device comprises: The communication device further includes an information transmitting module that transmits second instruction information to the first device so that the first device adds the first instruction information to the PSCCH or SCI transmitted on the PSSCH based on the second instruction information.

[0137] Here, the second instruction information is share This indicates whether or not the resource pool has the capability to perform sidelink positioning.

[0138] Furthermore, since the positioning reference signal transmission device applied to the second device according to the embodiments of the present disclosure is capable of executing the positioning reference signal transmission method applied to the above-mentioned second device, all of the embodiments of the positioning reference signal transmission method applied to the above-mentioned second device can be applied to the device, and the same or similar technical effects can be achieved.

[0139] As shown in FIG. 11, an embodiment of the present disclosure further provides a terminal device, which is a first device, comprising a processor 1100 and a memory 1110 connected to the processor 1100 via a bus interface, the memory 1110 for storing programs and data used when the processor 1100 performs operations, and the processor 1100 calls and executes the programs and data stored in the memory 1110.

[0140] Here, the terminal device further includes a transceiver 1120 connected to the bus interface and configured to transmit and receive data under the control of the processor 1100 .

[0141] Specifically, the transceiver 1120 comprises: 1st share A process of transmitting a physical sidelink control channel (PSCCH) and a physical sidelink shared channel (PSSCH) to a second device is performed in a resource pool, and sidelink control information (SCI) transmitted on the PSCCH or the PSSCH includes first indication information indicating related information of a sidelink positioning reference signal (SL-PRS).

[0142] Optionally, the relevant information of the SL-PRS is: Information indicating whether the SL-PRS is included in the current transmission; and The first device is the first share information indicating whether the device has the capability to perform sidelink positioning in the resource pool; and and resource configuration information of the SL-PRS.

[0143] Optionally, the SCI further includes priority information, and the priority information is: a minimum value of a first priority value corresponding to the priority of the PSSCH and a second priority value corresponding to the priority of the SL-PRS; The priority of the PSSCH; and the priority of the SL-PRS.

[0144] Optionally, the priority of the SL-PRS is: Configuration by upper layer parameters; being pre-configured; Priority information included in the positioning initiation signaling; and priority information of the corresponding positioning service.

[0145] Optionally, the processor 1100 is configured to: Prioritizing processing of a transport block with a higher priority based on a comparison result between the first priority and the second priority; if the first priority and the second priority are similar, randomly selecting and processing the transport block; the first priority is a priority corresponding to a transport block including the SL-PRS; The second priority is a priority corresponding to a transport block that does not include the SL-PRS.

[0146] Optionally, the result of comparing the first priority and the second priority is: The first priority is pre-configured to be higher than the second priority; and the second priority being preconfigured to be higher than the first priority.

[0147] Alternatively, the resource configuration information of the SL-PRS is configured by a higher layer parameter or is pre-configured; The method for configuring the resource configuration information of the SL-PRS is as follows: When the first device and the second device are in unicast communication, the method is configured or pre-configured by PC5-RRC signaling exchange; The method includes at least one of a resource pool configuration or a method based on being pre-configured.

[0148] Optionally, the resource configuration information of the SL-PRS is Priority information of the SL-PRS; Frequency domain resource configuration information of the SL-PRS; time domain resource configuration information of the SL-PRS; Code area configuration information of the SL-PRS; Pattern information of time domain symbol positions occupied by the SL-PRS; a resource reservation period of the SL-PRS; the number of resource reservation periods of the SL-PRS; the number of ports of the SL-PRS; and the offset slot number.

[0149] Optionally, the frequency domain resource configuration information of the SL-PRS is a starting physical resource block (PRB) of the SL-PRS; a starting subchannel position of the SL-PRS; the bandwidth of the SL-PRS; The comb size of the SL-PRS; a starting resource unit (RE) position of the SL-PRS; a comb offset of the SL-PRS; and frequency domain pattern information of the SL-PRS.

[0150] Optionally, the time domain resource configuration information of the SL-PRS is a slot position occupied by the SL-PRS; a starting symbol position in the slot of the SL-PRS; and the number of symbols the SL-PRS occupies in a slot.

[0151] Optionally, the code area configuration information of the SL-PRS is a cyclic shift of the SL-PRS; and and an orthogonal cover code (OCC) of the SL-PRS.

[0152] Optionally, the mapping rule of the SL-PRS is: The first stage of mapping to symbols containing SCI is impossible, The second stage of mapping to symbols containing SCI is impossible, The inability to map to symbols containing demodulation reference signals (DMRS); Mapping to automatic gain control (AGC) symbols is not possible; Mapping to the guard period (GP) symbol is not possible, and Mapping to physical sidelink feedback channel (PSFCH) symbols is not possible; and and the mapping to any symbol is possible.

[0153] Optionally, the processor 1100 further comprises: When the PSSCH resource element (RE) is occupied by the SL-PRS, a method of mapping the PSSCH to a corresponding RE by puncturing an RE occupied by the SL-PRS in the PSSCH or an entire symbol occupied by the SL-PRS; If the SL-PRS is a demodulation reference signal (DMRS) or a channel state information reference signal (CSI-RS), the PSSCH is mapped to a corresponding RE by bypassing an RE occupied by the SL-PRS or an entire symbol occupied by the SL-PRS according to a rate matching mapping scheme; A method of mapping the SL-PRS to the PSSCH when a first priority value corresponding to the priority of the PSSCH is greater than a second priority value corresponding to the priority of the SL-PRS; When a first priority value, which is a value corresponding to the priority of the PSSCH, is greater than a preset threshold and the first priority value is greater than the second priority value, which is a value corresponding to the priority of the SL-PRS, the SL-PRS is mapped to the PSSCH using at least one of the following methods.

[0154] Optionally, the processor 1100 further comprises: The transport block size of the PSSCH is determined based on the overhead information of the SL-PRS.

[0155] Here, the overhead information of the SL-PRS is Configuration by upper layer parameters; being pre-configured; and SL-PRS overhead indication information in the SCI.

[0156] Optionally, the processor 1100 further comprises: The cyclic redundancy check bits of the first stage SCI, Source ID in the second stage SCI, The destination ID in the second stage SCI, The slot number in which the SL-PRS is located; and a sequence ID of the SL-PRS configured by a higher layer parameter.

[0157] Optionally, the transceiver 1120 further comprises: Second instruction information transmitted from the second device is received.

[0158] The processor 1100 further Adding the first indication information to the SCI transmitted on the PSSCH or the PSCCH based on the second indication information; The second instruction information is for the second device to share This indicates whether or not the resource pool has the capability to perform sidelink positioning.

[0159] Here, in FIG. 11, the bus architecture may include any number of buses and bridges connected to each other, specifically connecting various circuits of one or more processors, represented by processor 1100, and memory, represented by memory 1110.

[0160] The bus architecture may also connect various other circuits, such as peripheral devices, regulators, and power management circuits, all of which are well known in the art and will not be described further herein. The bus interface provides a user interface 1130.

[0161] The transceiver 1120 may be multiple components, i.e., includes a receiver and a transmitter, providing a unit that communicates with various other devices over a transmission medium. The processor 1100 is responsible for managing the bus architecture and general processing, and the memory 1110 can store data used by the processor 1100 when performing operations.

[0162] An embodiment of the present disclosure further provides a terminal device that is a second device, the terminal device comprising a processor and a memory connected to the processor via a bus interface, the memory being for storing programs and data used when the processor performs operations, and the processor calling and executing the programs and data stored in the memory.

[0163] Here, the terminal device further includes a transceiver connected to the bus interface and configured to transmit and receive data under the control of the processor.

[0164] The structure of the terminal device (second device) according to the present disclosure is similar to the terminal device (first device) shown in FIG.

[0165] Specifically, the transceiver comprises: 1st shareIn the resource pool, a process of receiving a physical sidelink control channel (PSCCH) and a physical sidelink shared channel (PSSCH) transmitted from a first device is performed, and the sidelink control information (SCI) transmitted on the PSCCH or the PSSCH includes first indication information indicating related information of a sidelink positioning reference signal (SL-PRS).

[0166] Optionally, the relevant information of the SL-PRS is: Information indicating whether the SL-PRS is included in the current transmission; and information indicating whether the first device has the capability to perform sidelink positioning in a shared resource pool; and and resource configuration information of the SL-PRS.

[0167] Optionally, the processor, if the associated information of the SL-PRS indicates that the SL-PRS is included in the current transmission, determining resource configuration information of the SL-PRS based on the SCI; determining resource configuration information for the SL-PRS based on higher layer parameters; and determining resource configuration information for the SL-PRS based on preconfigured parameters.

[0168] Optionally, the transceiver is share before receiving a physical sidelink control channel (PSCCH) and a physical sidelink shared channel (PSSCH) transmitted from the first device in the resource pool; Second instruction information is transmitted to the first device so that the first device adds the first instruction information to the PSCCH or SCI transmitted on the PSSCH based on the second instruction information.

[0169] Here, the second instruction information is shareThis indicates whether or not the resource pool has the capability to perform sidelink positioning.

[0170] In addition, a specific embodiment of the present disclosure further provides a readable storage medium having stored thereon a computer program that, when executed by a processor, realizes steps in a positioning reference signal transmission method applied to a first device described in any one of the above items, or steps in a positioning reference signal transmission method applied to a second device described in any one of the above items.

[0171] It should be understood that the methods and apparatus disclosed in the various embodiments of this application may be implemented in other ways.

[0172] For example, the device embodiments described above are merely illustrative, and the division of the units is merely based on logical functions, and in actual implementation, the division may be performed in a different manner.

[0173] For example, multiple units or assemblies may be combined or integrated into another system, or some features may be omitted or not implemented. Also, the shown or discussed mutual couplings, direct couplings, or communicative connections may be through some interfaces, and the indirect couplings or communicative connections of devices or units may be electrical or other forms.

[0174] Furthermore, each functional unit in each embodiment of the present disclosure may be integrated into a single processing unit, each unit may exist physically independent, or two or more units may be integrated into a single unit. The integrated units may be realized in the form of hardware, or may be realized in the form of a functional unit of hardware and software.

[0175] The above-described integrated units realized in the form of software functional units may be stored in a computer-readable storage medium. The above-described software functional units may be stored in one storage medium and installed in one computer device (which may be a personal computer, a server, a network device, or the like) to execute the functions described in each embodiment of the present disclosure. Positioning reference signal transmission method The storage medium includes various media capable of storing program code, such as a U disk, a removable hard disk, a ROM (Read-Only Memory), a RAM (Random Access Memory), a magnetic disk, or an optical disk.

[0176] Although the preferred embodiments of the present disclosure have been described above, those skilled in the art may make some improvements and modifications without departing from the principles described in the present disclosure, and these improvements and modifications also fall within the scope of protection of the present disclosure.

Claims

1. A positioning reference signal transmission method applied to a first device, comprising: transmitting a physical sidelink control channel (PSCCH) and a physical sidelink shared channel (PSSCH) to a second device in a first shared resource pool, the first device including: introducing a sidelink control information (SCI) format 2-D in the PSSCH for scheduling decoding of a sidelink positioning reference signal (SL-PRS) and / or the PSSCH, and including first indication information indicating related information of the SL-PRS; Positioning reference signal transmission method.

2. The related information of the SL-PRS is: Information indicating whether the SL-PRS is included in this transmission; and information indicating whether the first device has capability to perform sidelink positioning in the first shared resource pool; and and resource configuration information of the SL-PRS. The positioning reference signal transmission method according to claim 1 .

3. The resource configuration information of the SL-PRS is configured by higher layer parameters or is pre-configured; The method for configuring the resource configuration information of the SL-PRS is as follows: When the first device and the second device are in unicast communication, the method is configured by a PC5-RRC signaling exchange or is pre-configured; and at least one of a resource pool configuration or a pre-configured method. The positioning reference signal transmission method according to claim 2 .

4. The resource configuration information of the SL-PRS is Priority information of the SL-PRS; Frequency domain resource configuration information of the SL-PRS; Time domain resource configuration information of the SL-PRS; Code area configuration information of the SL-PRS; Pattern information of time domain symbol positions occupied by the SL-PRS; a resource reservation period of the SL-PRS; The number of resource reservation periods of the SL-PRS; The number of ports of the SL-PRS; and an offset slot number. The positioning reference signal transmission method according to claim 2 .

5. The SL-PRS mapping rule is: Mapping to symbols containing first-stage SCI is not possible; Mapping to symbols containing second-stage SCI is not possible; The inability to map to symbols containing demodulation reference signals (DMRS); Mapping to automatic gain control (AGC) symbols is not possible; Mapping to a guard period (GP) symbol is not possible; and wherein mapping to a Physical Sidelink Feedback Channel (PSFCH) symbol is not possible. The positioning reference signal transmission method according to claim 4 .

6. When the PSSCH resource element (RE) is occupied by the SL-PRS, A method of mapping the PSSCH to a corresponding RE by puncturing an RE occupied by the SL-PRS or an entire symbol occupied by the SL-PRS in the PSSCH; If the SL-PRS is a demodulation reference signal (DMRS) or a channel state information reference signal (CSI-RS), the PSSCH may further include mapping the PSSCH to a corresponding RE by bypassing the RE occupied by the SL-PRS or the entire symbol occupied by the SL-PRS according to a rate matching mapping scheme. The positioning reference signal transmission method according to claim 1 .

7. determining a transport block size of the PSSCH based on overhead information of a SL-PRS; The overhead information of the SL-PRS is Configuration by upper layer parameters; being pre-configured; and SL-PRS overhead indication information in the SCI format 2-D, The positioning reference signal transmission method according to claim 1 .

8. the cyclic redundancy check bits of the first stage SCI; Source ID in the second stage SCI; Destination ID in the second stage SCI; The number of the slot in which the SL-PRS is located; and a sequence ID of the SL-PRS configured by an upper layer parameter. The positioning reference signal transmission method according to claim 1 .

9. receiving second instruction information transmitted from the second device; adding the first indication information to SCI transmitted on the PSSCH or the PSCCH based on the second indication information; the second indication indicates whether the second device is capable of performing sidelink positioning in the first shared resource pool. The positioning reference signal transmission method according to claim 1 .

10. A positioning reference signal transmission method applied to a second device, comprising: receiving a Physical Sidelink Control Channel (PSCCH) and a Physical Sidelink Shared Channel (PSSCH) transmitted from a first device in a first shared resource pool, the receiving device including: introducing a Sidelink Control Information (SCI) format 2-D into the PSSCH for scheduling decoding of a Sidelink Positioning Reference Signal (SL-PRS) and / or the PSSCH, the Sidelink Control Information (SCI) format 2-D including a first indication indicating related information of the SL-PRS; Positioning reference signal transmission method.

11. The related information of the SL-PRS is: Information indicating whether the SL-PRS is included in this transmission; and information indicating whether the first device has the capability to perform sidelink positioning in a shared resource pool; and and resource configuration information of the SL-PRS. The positioning reference signal transmission method according to claim 10.

12. The resource configuration information of the SL-PRS comprises: Priority information of the SL-PRS; Frequency domain resource configuration information of the SL-PRS; Time domain resource configuration information of the SL-PRS; Code area configuration information of the SL-PRS; Pattern information of time domain symbol positions occupied by the SL-PRS; a resource reservation period of the SL-PRS; The number of resource reservation periods of the SL-PRS; The number of ports of the SL-PRS; and an offset slot number. The positioning reference signal transmission method according to claim 11 .

13. If the SL-PRS related information indicates that the SL-PRS is included in this transmission, determining resource configuration information of the SL-PRS based on the SCI; determining resource configuration information of the SL-PRS based on higher layer parameters; determining resource configuration information of the SL-PRS based on preconfigured parameters; The positioning reference signal transmission method according to claim 10.

14. before receiving a physical sidelink control channel (PSCCH) and a physical sidelink shared channel (PSSCH) transmitted from a first device in the first shared resource pool, The method further includes transmitting second instruction information to the first device so that the first device adds the first instruction information to SCI format 2-D transmitted on the PSSCH based on the second instruction information; the second indication indicates whether the second device is capable of performing sidelink positioning in a first shared resource pool. The positioning reference signal transmission method according to claim 10.

15. A terminal device that is a first device, a processor; Memory and a program stored in the memory and executable by the processor; The program, when executed by the processor, implements the steps of the positioning reference signal transmission method according to any one of claims 1 to 9. Terminal equipment.

16. A terminal device that is a second device, a processor; Memory and a program stored in the memory and executable by the processor; The program, when executed by the processor, implements the steps of the positioning reference signal transmission method according to any one of claims 10 to 14. Terminal equipment.

Images