Configuration and Selection of Sidelink Positioning Reference Signal Resources

Abstract

A method, apparatus, and system for a UE for positioning is disclosed. The method includes determining one or more sidelink positioning reference signal (SL-PRS) resource sets in a slot, or one or more SL-PRS resource set patterns in one or more slots, wherein one or more SL-PRS resource sets are configured or pre-configured for one or more SL-PRS transmissions of one or more UEs including this UE; selecting at least one SL-PRS resource set from one or more SL-PRS resource sets based on at least one of random selection, one or more SL-PRS resource set patterns, one or more received control signals, support information received from at least one other UE different from this UE, or support information received from a network node; and transmitting at least one of one or more SL-PRS signals or SL-PRS control information.

Description

Technical Field

[0001] (Cross-reference to Related Patent Applications) This application claims the benefit of U.S. Provisional Application No. 63 / 457,255, filed on April 5, 2023, entitled "CONFIGURATION AND SELECTION OF SL-PRS RESOURCE SETS TO MITIGATE NEAR-FAR PROBLEM DUE TO IN-BAND EMISSION INTERFERENCE", which is hereby incorporated by reference in its entirety.

[0002] Devices and methods consistent with the present disclosure generally relate to communications, and more particularly, to methods, systems, and devices for the configuration and selection of sidelink positioning reference signal resource sets in communications.

Background Art

[0003] User equipment (UE) in communications, such as vehicles in vehicle-to-everything (V2X) communications, needs to obtain timely and accurate location information for various purposes. The UE can obtain location information using conventional positioning methods, for example, based on signals transmitted and received between a global navigation satellite system (GNSS) or a network node (e.g., a base station). However, if the UE is located in an area where such signals are intermittent or unreliable, such as inside a multi-story parking lot or a tunnel, the UE cannot obtain location information.

[0004] Sidelink positioning based on a sidelink positioning reference signal (SL-PRS) can provide a solution to the problems described above in conventional positioning methods. In sidelink positioning, a UE (transmitter UE) needs to transmit an SL-PRS to a receiver UE. However, if another transmitter UE is present in the sidelink communication that also transmits an SL-PRS to the same receiver UE, the signal from the other transmitter UE may interfere with the signal from the receiver UE, causing a decrease in positioning accuracy. The impact of such a decrease in positioning accuracy becomes more severe if the SL-PRS resource sets of the two transmitter UEs are configured or pre-configured as comb-based SL-PRS resource sets, and the two transmitter UEs multiplex the comb-based SL-PRS resource sets, transmitting SL-PRS signals in a periodic or semi-persistent scheduling manner, causing persistent or semi-persistent signal interference over long periods. Systems and methods for configuring and selecting SL-PRS resource sets that can mitigate signal interference and improve sidelink positioning accuracy are desired. [Overview of the project]

[0005] According to certain embodiments of this disclosure, a UE for sidelink positioning is provided. The UE includes a memory storing instructions and a processor, the processor executing instructions stored in the memory to determine at least one of one or more SL-PRS resource sets in a slot, or one or more SL-PRS resource set patterns in one or more slots, wherein one or more SL-PRS resource sets are configured or pre-configured for one or more SL-PRS transmissions of one or more UEs including this UE, and random selection, one or more SL-PRS resource set patterns, one or more received control signals, support information received from at least one other UE different from this UE, or network The system is configured to select at least one SL-PRS resource set from one or more SL-PRS resource sets based on at least one piece of support information received from a node, and to transmit at least one of one or more SL-PRS signals or SL-PRS control information based on the selected at least one SL-PRS resource set.

[0006] According to certain embodiments of the present disclosure, a node for sidelink positioning is provided. The node includes a memory storing instructions and a processor, the processor configured to execute instructions stored in the memory to configure one or more SL-PRS resource sets for one or more UEs including a first UE, to obtain information regarding the positioning accuracy of the first UE, and to determine whether to disable at least one SL-PRS resource set configured for the first UE and whether to configure at least one other SL-PRS resource set for the first UE.

[0007] According to certain embodiments of the present disclosure, a method for a UE in sidelink positioning is provided. The method includes determining one or more SL-PRS resource sets in a slot, or one or more SL-PRS resource set patterns in one or more slots, wherein one or more SL-PRS resource sets are configured or pre-configured for one or more SL-PRS transmissions of one or more UEs including this UE; selecting at least one SL-PRS resource set from one or more SL-PRS resource sets based on at least one of random selection, one or more SL-PRS resource set patterns, one or more received control signals, support information received from at least one other UE different from this UE, or support information received from a network node; and transmitting at least one of one or more SL-PRS signals or SL-PRS control information based on the selected at least one SL-PRS resource set.

[0008] According to certain embodiments of the present disclosure, a method is provided which includes a node for sidelink positioning. The method includes configuring one or more SL-PRS resource sets for one or more UEs including a first UE; obtaining information about the positioning accuracy of the first UE; and determining whether to disable at least one SL-PRS resource set configured for the first UE and whether to configure at least one other SL-PRS resource set for the first UE.

[0009] According to certain embodiments of the present disclosure, a non-temporary computer-readable medium is provided that stores instructions executable by one or more processors of a UE in sidelink positioning. The method includes determining one or more SL-PRS resource sets in a slot, or one or more SL-PRS resource set patterns in one or more slots, wherein one or more SL-PRS resource sets are configured or pre-configured for one or more SL-PRS transmissions of one or more UEs including this UE; selecting at least one SL-PRS resource set from one or more SL-PRS resource sets based on at least one of random selection, one or more SL-PRS resource set patterns, one or more received control signals, support information received from at least one other UE different from this UE, or support information received from a network node; and transmitting at least one of one or more SL-PRS signals or SL-PRS control information based on the selected at least one SL-PRS resource set.

[0010] According to certain embodiments of the present disclosure, a non-temporary computer-readable medium storing instructions executable by one or more processors of a node for sidelink positioning is provided for performing the method. The method includes configuring one or more SL-PRS resource sets for one or more UEs including a first UE; obtaining information about the positioning accuracy of the first UE; and determining whether to disable at least one SL-PRS resource set configured for the first UE and whether to configure at least one other SL-PRS resource set for the first UE. [Brief explanation of the drawing]

[0011] [Figure 1]This is a schematic diagram illustrating some exemplary situations in which conventional positioning is unavailable or inaccurate, consistent with some embodiments of this disclosure. [Figure 2] This is a schematic diagram illustrating sidelink positioning, consistent with some embodiments of the present disclosure. [Figure 3] This is a schematic diagram showing an exemplary downlink positioning reference signal (DL-PRS) resource mapping consistent with some embodiments of the present disclosure. [Figure 4] This is a schematic diagram showing an exemplary SL-PRS resource mapping consistent with some embodiments of the present disclosure. [Figure 5] This schematic diagram illustrates the occurrence of in-band radiated interference between two or more UEs that transmit SL-PRS signals using one or more SL-PRS resource sets in the same slot, consistent with some embodiments of the present disclosure. [Figure 6A] This is a schematic diagram illustrating an example of SL-PRS resource mapping. [Figure 6B] This is a schematic diagram showing another example of an SL-PRS resource mapping. [Figure 6C] This schematic diagram shows another exemplary SL-PRS resource mapping consistent with some embodiments of the present disclosure. [Figure 7A] This is a schematic diagram showing an exemplary SL-PRS resource mapping, including the first SL-PRS resource set pattern. [Figure 7B] This is a schematic diagram illustrating an exemplary SL-PRS resource mapping, including a second SL-PRS resource set pattern. [Figure 7C] This schematic diagram shows an exemplary SL-PRS resource mapping, including a third SL-PRS resource set pattern, consistent with some embodiments of the present disclosure. [Figure 8] This is a schematic diagram illustrating a method for UE in sidelink positioning, consistent with some embodiments of the present disclosure. [Figure 9] This is a schematic diagram illustrating a method including a node for sidelink positioning, consistent with some embodiments of the present disclosure. [Figure 10] This is a block diagram of a device, consistent with some embodiments of the present disclosure. [Modes for carrying out the invention]

[0012] Herein, references to exemplary embodiments are made in detail, and such examples are shown in the accompanying drawings. The following description refers to the accompanying drawings in which the same number in different drawings represents the same or similar elements, unless otherwise indicated. The implementations shown in the following description of exemplary embodiments do not represent all implementations consistent with the present disclosure. Rather, they are merely examples of systems, apparatus, and methods consistent with embodiments related to the present disclosure, such as those enumerated in the accompanying claims.

[0013] Figures 1A–1C are schematic diagrams illustrating some exemplary situations in which conventional positioning is unavailable or inaccurate, consistent with some embodiments of the present disclosure. In communications, UEs (such as mobile nodes) need to obtain timely and accurate positioning information for various purposes. The term “node” is used in this disclosure as a general term which may be user equipment, relay nodes, roadside units, vehicles, on-board modules, or network infrastructure devices (e.g., base stations, relay devices, wireless routers, controllers, access points). For many V2X services, location information is one of the essential data elements that need to be exchanged over V2X communication. In V2X communication, location information may be exchanged via basic safety messages (BSM), collective perception messages (CPM), maneuver coordination messages (MCM), or personal safety messages (PSM). To obtain location information, UEs can use conventional positioning methods based on the transmission / reception of Global Navigation Satellite System (GNSS) signals to and from satellites, for example. However, accurate positioning using GNSS signals is difficult in some situations, and Figures 1A–1C schematically illustrate such difficult situations. Referring to Figure 1A, a UE102 (e.g., a vehicle) in an urban valley may attempt to obtain positioning information using GNSS signals transmitted from satellite 104. However, due to non-light-of-sight (NLOS) and multipath in urban valleys, the UE102 may not receive the GNSS signal, and therefore GNSS-based positioning may be unavailable or inaccurate in this situation. Referring to Figure 1B, a UE106 (e.g., a vehicle) in a tunnel may experience the same problem, as the tunnel blocks the transmission of the GNSS signal when the UE attempts to obtain positioning information using GNSS signals transmitted from satellite 108.Similarly, as shown in Figure 1C, when a UE attempts to acquire positioning information using GNSS signals transmitted from satellite 112, the UE 110 (e.g., a vehicle) inside the parking garage may encounter similar difficulties because the parking garage building blocks the transmission of GNSS signals.

[0014] UEs (e.g., UE102, UE106, or UE110) may also use other conventional positioning methods, such as inertial measurement unit (IMU) / dead dead navigation. However, with IMU / dead dead navigation, positioning errors generally increase with distance, leading to a decrease in positioning accuracy. UEs may also attempt to use Uu-based positioning methods that rely on signals transmitted by network nodes (e.g., base stations). However, if the UE is outside the coverage area of ​​a network node, signals from the network node are unavailable. Sidelink positioning can provide a solution to the aforementioned situations, as described below.

[0015] Figure 2 is a schematic diagram illustrating sidelink positioning, consistent with some embodiments of the present disclosure. To address the challenges of conventional positioning methods, as described with respect to Figures 1A-C, at least some embodiments of the present disclosure focus on sidelink positioning. Referring to Figure 2, in sidelink positioning, a target node 202 (e.g., a vehicle, pedestrian, etc.) and an anchor node 204 (e.g., a roadside unit) may transmit / receive SL-PRS signals to determine the location of the target node 202. For example, the location of the target node 202 may be determined by measuring the round-trip time (RTT) of the SL-PRS signal, the relative time of arrival (RTOA) of the SL-PRS signal, the angle of arrival (AoA) of the SL-PRS signal, or the zenith of arrival (ZoA) of the SL-PRS signal, etc. Positioning can be absolute positioning, which determines the coordinates of target node 202, and / or relative positioning, which determines the relative position of target node 202 relative to another node (e.g., anchor node 204). Transmission of SL-PRS signals is performed using radio resources (e.g., time resources and / or Frequency resources may be required. At least some embodiments of this disclosure use a comb-based SL-PRS resource mapping similar to DL-PRS resource mapping, as described below.

[0016] FIG. 3 is a schematic diagram showing an exemplary DL-PRS resource mapping that conforms to some embodiments of the present disclosure. As shown in FIG. 3, the DL-PRS resource mapping is a comb-based mapping. The radio resources may be composed of time resources and / or frequency resources. In FIG. 3, the horizontal axis represents time resources, and the vertical axis represents frequency resources. The comb-based resource mapping in FIG. 3 includes one resource set that includes a plurality of resource elements (REs) indicated by black squares. As shown in FIG. 3, on the horizontal axis, each resource element corresponds to the length of one symbol. FIG. 3 shows 14 symbols on the horizontal axis, and these symbols constitute one slot. In the DL-PRS mapping shown in FIG. 3, the separation between two adjacent resource elements in the horizontal direction is 3, and the separation between two adjacent resource elements in the vertical direction is also 3. In some embodiments, the DL-PRS resource set in FIG. 3 may be associated with a resource ID, a comb size, a comb offset, a start symbol of a slot, or the number of symbols in a slot. The DL-PRS resource mapping in FIG. 3 is merely exemplary, and the scope of this application is not limited in such a way. The DL-PRS resource mapping of the present disclosure can include any number of resource sets and can form any resource set pattern.

[0017] Figure 4 is a schematic diagram showing an exemplary SL-PRS resource mapping consistent with certain embodiments of the present disclosure. As shown in Figure 4, the SL-PRS source mapping is a comb-based mapping. Referring to Figure 4, the exemplary SL-PRS resource mapping includes four different SL-PRS resource sets within a slot: SL-PRS1, SL-PRS2, SL-PRS3, and SL-PRS4. The four different SL-PRS resource sets may be configured for one or more UEs. One or more UEs may multiplex resource elements from these four different resource sets. In some embodiments, the SL-PRS resources consist of time and / or frequency. In some embodiments, each of the four SL-PRS resource sets may be associated with at least one of the following: resource ID, comb size, comb offset, slot start symbol, or number of symbols in the slot. In a situation where four different SL-PRS resource sets are configured for multiple UEs (e.g., four UEs), multiplexing comb-based SL-PRS resources from the four different SL-PRS resource sets can cause in-band emission (IBE) interference between multiple UEs transmitting SL-PRS signals using the same SL-PRS resource set in the same slot, as described below.

[0018] FIG. 5 is a schematic diagram illustrating the occurrence of in-band radiation interference between two or more UEs transmitting SL-PRS signals using one or more SL-PRS resource sets within the same slot, which is consistent with some embodiments of the present disclosure. Referring to FIG. 5, transmitter (Tx) UEs 502 and Tx UE 504 may use one or more resource sets within the same slot for SL-PRS transmission. For example, Tx UE 502 may use SL-PRS2 of FIG. 4, and Tx UE 504 may use SL-PRS1 of FIG. 4 adjacent to SL-PRS2 in the vertical direction (within the frequency domain). Both Tx UE 502 and Tx UE 504 transmit SL-PRS signals to Rx UE 506. Tx UE 502 is far from Rx UE 506, while Tx UE 504 is close to Rx UE 506. In this case, the leakage of the signal from Tx UE 504 (i.e., IBE) interferes with the signal from Tx UE 502 at Rx UE 506, causing a decrease in the positioning accuracy of sidelink positioning. In the present disclosure, this phenomenon is caused by IBE interference and is called the near-far problem. The impact of such a decrease in positioning accuracy becomes more serious because it causes a persistent or semi-persistent near-far problem when multiple Tx UEs transmit SL-PRS signals using a periodic and / or semi-persistent scheduling (SPS) method based on the comb-base multiplexing of SL-PRS resource sets within the same slot. In such cases, the near-far problem occurs in continuous SL-PRS transmission, which may cause a decrease in positioning accuracy over a longer period.

[0019] At least some embodiments of this disclosure provide solutions for mitigating near-field problems caused by IBE interference. For example, in some embodiments, each Tx UE may use a set of SL-PRS resources less affected by IBE interference for each SL-PRS transmission, and / or use different sets of SL-PRS resources for periodic or semi-periodic SL-PRS transmissions to mitigate persistent or semi-persistent near-field problems. According to some embodiments of this disclosure, to mitigate near-field problems, for example, the Tx UE may, based on a random selection from available SL-PRS resource sets, and / or a configured or pre-configured SL-PRS resource set pattern, and / or Tx Based on sensing information from the UE itself, and / or control signal transmission and / or support information from one or more other Tx UEs or Rx UEs and / or network nodes, the Tx UE may select one or more SL-PRS resource sets to be used for one or more subsequent SL-PRS transmissions. In addition, the Tx UE may transmit control information for an SL-PRS signal indicating SL-PRS resource set information for one or more subsequent SL-PRS transmissions (e.g., initial transmission and / or retransmission in the current SPS period and / or subsequent SPS periods) so that one or more surrounding UEs can recognize the SL-PRS resource set and prevent the selection of a reserved SL-PRS resource set and an SL-PRS resource set that may experience IBE interference.

[0020] Figure 6A is a schematic diagram showing an exemplary SL-PRS resource mapping consistent with certain embodiments of the present disclosure; Figure 6B is a schematic diagram showing another exemplary SL-PRS resource mapping consistent with certain embodiments of the present disclosure; and Figure 6C is a schematic diagram showing another exemplary SL-PRS resource mapping consistent with certain embodiments of the present disclosure. Referring to Figure 6A, the exemplary SL-PRS resource mapping includes four different SL-PRS resource sets in the slots, which are SL-PRS1, SL-PRS2, SL-PRS3, and SL-PRS4. In Figure 6A, the separation value between two adjacent resource elements on the horizontal and vertical axes is 0. Referring to Figure 6B, the exemplary SL-PRS resource includes two different SL-PRS resource sets in the slots, which are SL-PRS1 and SL-PRS3. In Figure 6B, the isolation value for the two adjacent resource elements SL-PRS1 and SL-PRS3 is 0 on the horizontal axis and 1 on the vertical axis. Referring to Figure 6C, the exemplary SL-PRS resource contains one SL-PRS resource set in its slot, which is SL-PRS1. In Figure 6C, the isolation value for the two adjacent resource elements of SL-PRS1 on the horizontal and vertical axes is 3.

[0021] The three SL-PRS resource mappings shown in Figures 6A to 6C are merely illustrative resource mappings, and the scope of this application is not limited thereto. In some embodiments, the SL-PRS resource mapping is configured, pre-configured, or predefined such that any number of SL-PRS resource sets may be included in a single slot or any separation value between two adjacent resource elements may be adopted, based on the effects of the near-far problem and / or positioning accuracy requirements and / or priority of the SL-PRS signal and / or congestion index associated with the SL-PRS signal. In some embodiments, The current problem can be mitigated by configuring, preconfiguring, defining, or pre-defining different SL-PRS resource set patterns, as will be explained below with reference to Figures 7A to 7C.

[0022] Figure 7A is a schematic diagram showing an exemplary SL-PRS resource mapping including a first SL-PRS resource set pattern consistent with certain embodiments of the present disclosure; Figure 7B is a schematic diagram showing an exemplary SL-PRS resource mapping including a second SL-PRS resource set pattern consistent with certain embodiments of the present disclosure; and Figure 7C is a schematic diagram showing an exemplary SL-PRS resource mapping including a third SL-PRS resource set pattern consistent with certain embodiments of the present disclosure. Referring to Figure 7A, the exemplary SL-PRS resource mapping includes six different SL-PRS resource sets in the slots, which are SL-PRS1, SL-PRS2, SL-PRS3, SL-PRS4, SL-PRS5, and SL-PRS6. The arrangement (sequence) of the resource elements of the six different SL-PRS resource sets forms the first SL-PRS resource set pattern, as shown in Figure 7A. In Figure 7A, there is no separation between two adjacent resource elements on both the horizontal and vertical axes. Referring to Figure 7B, the exemplary SL-PRS resource mapping includes the same six SL-PRS resource sets (SL-PRS1, SL-PRS2, SL-PRS3, SL-PRS4, SL-PRS5, and SL-PRS6) in the slots. However, compared to Figure 7A, the arrangement (sequence) of the resource elements of the six different SL-PRS source sets is different in Figure 7B. The arrangement of the resource elements of the six different SL-PRS source sets in Figure 7B forms a second SL-PRS resource set pattern. In Figure 7B as well, there is no separation between two adjacent resource elements on both the horizontal and vertical axes. Referring to Figure 7C, the exemplary SL-PRS resource mapping includes the same six SL-PRS resource sets (SL-PRS1, SL-PRS2, SL-PRS3, SL-PRS4, SL-PRS5, and SL-PRS6) in the slots. The arrangement of resource elements in the six SL-PRS resource sets forms a third SL-PRS resource set pattern, distinct from the first and second SL-PRS resource set patterns. In Figure 7C, as well, there is no separation between two adjacent resource elements on both the horizontal and vertical axes.

[0023] The three SL-PRS resource set patterns shown in Figures 7A to 7C are merely illustrative resource set patterns, and the scope of this application is not limited thereto. In some embodiments, any type of SL-PRS resource set pattern is configured, preconfigured, defined, or predefined based on the influence of the proximity problem and / or positioning accuracy requirements.

[0024] Figure 8 is a schematic diagram illustrating a method for a UE in sidelink positioning, consistent with some embodiments of the present disclosure. A UE can be any UE or mobile node in a communication system, e.g., a vehicle or a pedestrian. For example, in an embodiment, the UE may be the target node 202 in Figure 2. Referring to Figure 8, the method 800 includes step 802 of determining one or more SL-PRS resource sets in a slot, or at least one of one or more SL-PRS resource set patterns in one or more slots, where one or more SL-PRS resource sets are configured or pre-configured for one or more SL-PRS transmissions of one or more UEs, including this UE. A slot may be a slot in a dedicated SL-PRS resource pool or a slot in a shared SL-PRS resource pool. One or more SL-PRS resource sets may be at least one of one or more time resources or one or more frequency resources. In some embodiments, each of one or more SL-PRS resource sets may have an SL-PRS resource identifier (ID), SL-PRS comb size, SL-PRS comb offset, and slot opening. It may be associated with at least one of the start symbol or the number of SL-PRL symbols in the slot. In some embodiments, one or more SL-PRS resource sets may be one or more active SL-PRS resource sets configured or preconfigured to be available in at least one slot. For example, one or more SL-PRS resource sets may be SL-PRS1 in Figure 6C, or SL-PRS1 and SL-PRS3 in Figure 6B, or SL-PRS1, SL-PRS2, SL-PRS3, and SL-PRS4 in Figure 6A. In some embodiments, one or more SL-PRS resource sets may be configured or preconfigured such that each of the one or more SL-PRS resource sets has a corresponding SL-PRS resource ID. For example, in some embodiments, each of SL-PRS1, SL-PRS2, SL-PRS3, and SL-PRS4 in Figure 6A has a corresponding SL-PRS resource ID.

[0025] In some embodiments, one or more SL-PRS resource sets may be configured or preconfigured based on one or more priorities of one or more SL-PRS signals, or at least one of one or more congestion metrics associated with one or more SL-PRS signals. For example, one or more congestion metrics associated with one or more SL-PRS signals may include at least one of channel busy ratio (CBR) or channel occupancy ratio (CR). In some embodiments, one or more SL-PRS resource sets may be configured or preconfigured such that in at least one slot, one or more SL-PRS resource sets are associated with an odd resource set index or an even resource set index.

[0026] In some embodiments, one or more SL-PRS resource sets may be configured or preconfigured such that, in at least one slot, the separation between two resource elements of any two SL-PRS resource sets from the one or more SL-PRS resource sets is greater than or equal to a certain integer. This integer may be configured or preconfigured. Two resource elements of any two SL-PRS resource sets from the one or more SL-PRS resource sets may be two adjacent resource elements. For example, in Figure 4, the resource element having a symbol index of 4 and a resource element index of 0, and the resource element having a symbol index of 4 and a resource element index of 3 are two adjacent resource elements of two SL-PRS resource sets (SL-PRS1 and SL-PRS2), and the separation between these two resource elements is 2. The separation between two resource elements of any two SL-PRS resource sets from the one or more SL-PRS resource sets may be at least one of frequency domain separation or time domain separation. For example, the separation of 2 described in the above example in Figure 4 is a frequency domain separation.

[0027] In some embodiments, one or more SL-PRS resource sets may be configured or pre-configured such that a wider separation between two resource elements of any two SL-PRS resource sets can be used for SL-PRS signals having at least one of a lower congestion level or a higher priority. On the other hand, a narrower separation between two resource elements of any two SL-PRS resource sets can be used for SL-PRS signals having at least one of a higher congestion level or a lower priority. The separation between two resource elements of any two SL-PRS resource sets may be at least one of separation in the frequency domain or separation in the time domain. In some embodiments, any two SL-PRS resource sets Two resource elements in a set are two adjacent resource elements. For example, Figure 6B shows that the isolation between two adjacent resource elements of two SL-PRS resource sets (SL-PRS1 and SL-PRS3) in the frequency domain is 1, while Figure 6A shows that the isolation between the same two adjacent resource elements of two SL-PRS resource sets (SL-PRS1 and SL-PRS3) in the frequency domain is 0. The SL-PRS resource mapping in Figure 6B is configured or pre-configured to have wider isolation between two adjacent resource elements than the isolation in Figure 6A, for example, when the SL-PRS in Figure 6B has a lower congestion level and / or a higher priority than the SL-PRS in Figure 6A.

[0028] In some embodiments, one or more SL-PRS resource set patterns may include multiple SL-PRS resource set patterns, and one or more slots may be associated with at least one SL-PRS resource set pattern from among the one or more SL-PRS resource set patterns. For example, Figures 7A to 7C show three different SL-PRS resource set patterns (a first SL-PRS resource set pattern, a second SL-PRS resource set pattern, and a third SL-PRS resource set pattern), where the slot in Figure 7A is associated with the first SL-PRS resource set pattern, the slot in Figure 7B is associated with the second SL-PRS resource set pattern, and the slot in Figure 7C is associated with the third SL-PRS resource set pattern. One or more SL-PRS resource set patterns may be configured or pre-configured, and each of the one or more SL-PRS resource set patterns may be associated with one or more slots. In some embodiments, at least one SL-PRS resource set pattern associated with one or more slots may differ from one or more SL-PRS resource set patterns of an integer number of adjacent slots. This integer may be configured or preconfigured. In some embodiments, at least one SL-PRS resource set pattern may be associated with an integer number of consecutive slots, this integer may be configured or preconfigured. In some embodiments, at least one SL-PRS resource set pattern may be associated with one or more slots identified by one or more mapping tables. One or more mapping tables may include mappings between at least one SL-PRS resource set pattern and one or more identified slots. One or more mapping tables may be configured or preconfigured.

[0029] In some embodiments, one or more SL-PRS resource sets may be multiple SL-PRS resource sets configured or pre-configured for multiple UEs, each of which may be associated with a corresponding SL-PRS resource set among the multiple SL-PRS resource sets. For example, in Figure 4, four SL-PRS resource sets (SL-PRS1, SL-PRS2, SL-PRS3, and SL-PRS4) may be configured or pre-configured for four UEs, such that each of the four UEs is associated with a corresponding SL-PRS resource set among the four SL-PRS resource sets.

[0030] Method 800 includes step 804 of selecting at least one SL-PRS resource set from one or more SL-PRS resource sets based on at least one of the following: random selection, one or more SL-PRS resource set patterns, one or more received control signals, support information received from at least one other UE different from this UE, or support information received from a network node. In some embodiments, the UE selects at least one specific SL-PRS resource set corresponding to the UE from one or more SL-PRS resource sets with respect to at least one slot. A selection may be made. In some embodiments, the UE may use a different set of SL-PRS resources from one or more SL-PRS resource sets for each SL-PRS transmission, based on one or more cyclical patterns of selection. For example, one or more SL-PRS resource sets may cycle through for each periodic SL-PRS transmission. One or more cyclical patterns of selection may be derived based on at least one of the following: the zone in which the UE is located, the anchor group associated with the UE, or the positioning session associated with the UE. For example, anchor UEs that share the same movement pattern (e.g., anchor UEs following the same target UE on a highway) may use a cyclical pattern leading to adjacent SL-PRS, while anchor UEs with different movement patterns that may be adversely affected by each other's Doppler shifts may use opposing cyclical patterns. One or more cyclical patterns may be configured by network nodes or pre-configured by the UE.

[0031] In some embodiments, the UE may perform or acquire its own channel sensing information. The UE may randomly select, or based on acquired channel sensing information, one or more SL-PRS resource sets corresponding to the UE for one or more SL-PRS signal transmissions. For example, the UE may select at least one SL-PRS resource set for at least one of one or more initial transmissions in an SPS, one or more retransmissions in an SPS, or one or more transmissions in a one-time transmission.

[0032] In some embodiments, the UE may randomly select one or more radio resources having a granularity of at least one of

[0033] In some embodiments, the UE may be a first transmitter UE that receives SL-PRS control signals (information) generated by a second transmitter UE from the second transmitter UE. The received SL-PRS control information may include SL-PRS resource set information of the second transmitter UE relating to at least one of one or more current SL-PRS transmissions or one or more subsequent transmissions. The control information may include at least one of the following: (1) SL-PRS resource set information relating to one or more initial transmissions in the current SPS period, (2) SL-PRS resource set information relating to one or more retransmissions in the current SPS period, (3) SL-PRS resource set information relating to one or more initial transmissions in at least one subsequent SPS period, or (4) SL-PRS resource set information relating to one or more retransmissions in at least one subsequent SPS period. The UE may receive the SL-PRS control information via direct communication or via a network node.

[0034] Based on the received SL-PRS control information, the UE (first transmitter UE) sends the first transmission The UE may further determine whether to select or re-select one or more SL-PRS resource sets while ensuring minimum separation between the resource elements of one or more SL-PRS resource sets for the transmitter UE and the resource elements of one or more SL-PRS resource sets for the second transmitter UE. Minimum separation may be configured or pre-configured. For example, minimum separation may be the length of one (or any other number) resource elements in the frequency domain. In some embodiments, the UE (first transmitter UE) may further determine whether to adjust the transmitter power of the first transmitter UE based on at least one of the following: the location of the first transmitter UE, the location of the second transmitter UE, the mobility of the first transmitter UE, or the mobility of the second transmitter UE. In some embodiments, in response to a determination that minimum separation between the resource elements of one or more SL-PRS resource sets for the first transmitter UE and the resource elements of one or more SL-PRS resource sets for the second transmitter UE cannot be satisfied, the UE may adjust the transmit power of the first transmitter UE. The transmit power of the first transmitter UE may be adjusted based on at least one of the following: reducing the transmit power of the first transmitter UE when the distance between the first transmitter UE and the second transmitter UE is less than or equal to a first threshold, or maintaining or increasing the transmit power of the first transmitter UE when the distance between the first transmitter UE and the second transmitter UE is greater than a second threshold. The first threshold and / or the second threshold may be configured or preconfigured.

[0035] In some embodiments, the UE may be a first transmitter UE and may obtain support information from a second transmitter UE, such as information about one or more SL-PRS resource sets reserved by the second transmitter UE. Based on the information about one or more SL-PRS resource sets reserved by the second transmitter UE, the UE (first transmitter UE) may further determine whether to select or re-select one or more SL-PRS resource sets. In some embodiments, the information about one or more SL-PRS resource sets reserved by the second transmitter UE may be obtained based on at least one of the following: decoding sidelink control information (SCI) received from the second transmitter UE, or measuring one or more SL-PRS signals received from the second transmitter UE. Measuring one or more SL-PRS signals received from the second transmitter UE may include measuring at least one of the following: reference signal received power (RSRP), received signal strength indicator (RSSI), reference signal received quality (RSRQ), or signal-to-noise and interference ratio (SINR) of one or more SL-PRS signals. In some embodiments, the UE may exclude one or more SL-PRS resource sets reserved by the second transmitter UE in response to at least one of the following determinations: (1) the separation between resource elements of one or more SL-PRS resource sets for the first transmitter UE and resource elements of one or more SL-PRS resource sets for the second transmitter UE is less than a first threshold, or (2) one or more signal indicators of one or more SL-PRS resource sets reserved by the second transmitter UE exceed a second threshold.The first and second thresholds may be configured or preconfigured, defined, or predefined.

[0036] In some embodiments, the UE may be a transmitter UE that receives support information from a receiver UE. For example, the transmitter UE may receive at least one of one or more signal indices measured by the receiver UE for one or more SL-PRS signals received by the receiver UE, or one or more adjustment instructions. In this configuration, one or more signal indicators or one or more adjustment instructions may include at least one of the following: (1) reference signal received power RSRP of one or more SL-PRS signals received by the receiver UE; (2) received signal strength indicator (RSSI) of one or more SL-PRS signals received by the receiver UE; (3) reference signal received quality (RSRQ) of one or more SL-PRS signals received by the receiver UE; (4) signal-to-noise interference ratio (SINR) of one or more SL-PRS signals received by the receiver UE; (5) one or more SL-PRS resource sets preferred for the transmitter UE; or (6) one or more SL-PRS resource sets unfavorable for the transmitter UE. In some embodiments, in selecting at least one SL-PRS resource set, the UE may consider channel sensing information acquired by the transmitter UE and at least one of the one or more signal indicators or one or more adjustment instructions received from the receiver UE. In some embodiments, the transmitter UE may receive one or more conflict instructions from the receiver UE indicating the presence of at least one SL-PRS transmission affecting the receiver UE's reception of one or more SL-PRS signals.

[0037] In some embodiments, the selected at least one SL-PRS resource set may be dynamically enabled or disabled based on the determination of accuracy in positioning. For example, in some embodiments, the dynamic enabling or disabling of the selected at least one SL-PRS resource set may be performed by a network node (e.g., a base station, a location management function (LMF), or a server UE). In some embodiments, the UE may determine the accuracy in positioning by receiving accuracy information from at least one of the base station, LMF, or server UE.

[0038] Method 800 includes step 806 of transmitting at least one of one or more SL-PRS signals or SL-PRS control information based on at least one selected SL-PRS resource set. In some embodiments, the UE may be a first transmitter UE that transmits SL-PRS control information to one or more second transmitter UEs via unicast, groupcast, or broadcast, either through direct communication or through network nodes. In some embodiments, the UE may transmit SL-PRS control information to one or more second transmitter UEs via unicast, groupcast, or broadcast, either through an SCI or a medium access control protocol control element (MAC CE).

[0039] Figure 9 is a schematic diagram illustrating a method including a node for sidelink positioning, consistent with certain embodiments of the present disclosure. The node may be at least one of a base station, an LMF, or an UE (e.g., a server UE). For example, in an embodiment, the node may be the anchor node 204 in Figure 2.

[0040] Referring to Figure 9, Method 900 includes step 902 of configuring one or more SL-PRS resource sets for one or more UEs, including a first UE. In some embodiments, the one or more SL-PRS resource sets may be multiple SL-PRS resource sets for multiple UEs, including a first UE. The node may further configure multiple SL-PRS resource sets such that each of the multiple SL-PRS resource sets is available in one or more slots. In some embodiments, the node configures one or more SL-PRS resource sets based on one or more priorities of one or more SL-PRS signals of one or more UEs, or at least one of one or more congestion indices associated with one or more UEs. This may be done. In some embodiments, a node may configure one or more SL-PRS resource sets such that in one or more slots, one or more SL-PRS resource sets are associated with one or more odd resource set indices or even resource set indices. In some embodiments, a node may configure one or more SL-PRS resource sets such that the separation between two resource elements of any two of the one or more SL-PRS resource sets is greater than or equal to a certain integer. In some embodiments, the two resource elements of any two of the one or more SL-PRS resource sets are two adjacent resource elements. This integer may be configured or preconfigured. In some embodiments, the separation between two resource elements of any two of the one or more SL-PRS resource sets may be at least one of separation in the frequency domain or separation in the time domain.

[0041] In some embodiments, a node may configure one or more SL-PRS resource sets such that a wider separation between two resource elements of any two SL-PRS resource sets is used for one or more lower congestion levels or higher priorities of the SL-PRS signal, and a narrower separation between two resource elements of any two SL-PRS resource sets is used for one or more higher congestion levels or lower priorities of the SL-PRS signal. The two resource elements of any two SL-PRS resource sets may be two adjacent resource elements. The separation between two resource elements of any two SL-PRS resource sets may be at least one of separation in the frequency domain or separation in the time domain.

[0042] Method 900 includes step 904 of obtaining information regarding the positioning accuracy of the first UE. For example, in some embodiments, a node may determine the degradation of the positioning accuracy of the first UE based on at least one of the following: the configuration of one or more SL-PRS resource sets for one or more UEs, one or more measurement reports regarding one or more SL-PRS signals transmitted from one or more UEs, or one or more shared movement patterns of one or more other UEs.

[0043] Method 900 includes step 906 of determining whether to disable at least one SL-PRS resource set configured for the first UE and whether to configure at least one other SL-PRS resource set for the first UE. For example, in response to a determination that the positioning accuracy of the first UE is below a threshold, the node may dynamically disable at least one SL-PRS resource set configured for the first UE. The node may further configure at least one other SL-PRS resource set for the first UE.

[0044] The methods described herein may be applied to any side-link positioning. However, the scope of the methods described herein is not limited in this way. In some embodiments, the methods may be applied to uplink / downlink (Uu) positioning using, for example, DL-PRS resource mapping or any variation thereof, as shown in Figure 3. Uplink / downlink positioning may use, for example, long-term evolution (LTE) or new radio (NR) or future generation (6G, 7G, or any future generation) radio access technologies. The methods described herein may not be applied to other systems, for example, other standards (e.g., 802.11). It can also be applied to systems that comply with standards of the Institute of Electrical and Electronics Engineers (IEEE), including [specific standards].

[0045] Figure 10 is a block diagram of device 1000, consistent with some embodiments of the present disclosure. For example, device 1000 may be a node that acquires positioning information using sidelink positioning, such as target node 202 in Figure 2. Another example is that device 1000 may be a node involved in sidelink positioning, such as anchor node 204 in Figure 2. Another example is that device 1000 may be a Tx UE, such as Tx UE502 or Tx UE504 in Figure 5, that transmits data / signals to an Rx UE. Another example is that device 1000 may be a receiver UE, such as Rx UE506 in Figure 5, that receives data / signals from one or more transmitter UEs. Device 1000 may take any form, including but not limited to a vehicle, a vehicle-mounted component, a roadside unit, a laptop computer, a desktop computer, a server computer, a wireless terminal including a mobile phone, a wireless handheld device, or a wireless personal device, or any other form.

[0046] Referring to Figure 10, device 1000 may include an antenna 1002 that can be used to transmit and receive electromagnetic signals to and from network nodes or mobile nodes. Antenna 1002 may include one or more antenna elements and may enable various input / output antenna configurations, such as multiple input multiple output (MIMO), multiple input single output (MISO), and single input multiple output (SIMO) configurations. In some embodiments, antenna 1002 may include multiple (e.g., tens or hundreds) antenna elements and may enable multi-antenna functions such as beamforming. In some embodiments, antenna 1002 is a single antenna.

[0047] Device 1000 may include a transceiver 1004 coupled to antenna 1002. The transceiver 1004 may be a wireless transceiver in device 1000 and may communicate bidirectionally with a network node or mobile node. For example, the transceiver 1004 may receive / transmit wireless signals (e.g., DL-PRS) to and from a base station via downlink / uplink communication. The transceiver 1004 may receive / transmit wireless signals (e.g., SL-PRS) to and from a UE or roadside unit via sidelink communication. The transceiver 1004 may include a modem for modulating packets, supplying the modulated packets to antenna 1002 for transmission, and demodulating packets received from antenna 1002.

[0048] Device 1000 may include memory 1006. Memory 1006 may be any type of computer-readable storage medium, including volatile or non-volatile memory devices or combinations thereof. Computer-readable storage medium includes, but is not limited to, non-temporary computer storage medium. Non-temporary storage medium may be accessed by a general-purpose or dedicated computer. Examples of non-temporary storage medium include portable computer diskettes, hard disks, random access memory (RAM), read-only memory (ROM), and erasable programmable read-only memory (EPROM). Memory, electrically erasable programmable ROM (EEPROM), digital versatile disk (DVD), flat Non-temporary media include, but are not limited to, memory, compact disk (CD) ROM, or other optical disk storage, magnetic disk storage, or other magnetic storage devices. Non-temporary media may be used to carry or store desired program code means (e.g., instructions and / or data structures) and may be accessed by a general-purpose or dedicated computer or general-purpose or dedicated processor. In some examples, software / program code may be transmitted from a remote source (e.g., a website, server, etc.) using coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technologies such as infrared, radio, and microwave. In such examples, coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave fall within the definition of a medium. Combinations of the above examples also fall within the scope of computer-readable media.

[0049] Memory 1006 may store the identity of device 1000, as well as information related to signals and / or data received by antenna 1002. Memory 1006 may also store post-processing signals and / or data. Memory 1006 may also store computer-readable program instructions, mathematical models, and algorithms used for signal processing in transceiver 1004 and calculations in processor 1008 included as part of device 1000 (e.g., calculations for determining the coordinates of device 1000). Memory 506 may further store computer-readable program instructions to be executed by processor 1008 to operate device 1000 to perform the various functions described herein. For example, memory 1006 may store instructions to be executed by processor 1008 to operate device 1000 to perform method 800 in Figure 8 and / or method 900 in Figure 9. In some examples, memory 1006 may include a basic input / output system (BIOS) that can control basic hardware or software operations, such as interactions with peripheral components or devices.

[0050] The computer-readable program instructions of this disclosure may be assembler instructions, instruction-set-architecture (ISA) instructions, machine instructions, machine-dependent instructions, microcode, firmware instructions, state-setting data, or source code or object code written in any combination of one or more programming languages, including object-oriented programming languages ​​and conventional procedural programming languages. The computer-readable program instructions may be executed as a standalone software package on a computing device, or partially on a first computing device and partially on a second computing device located remotely from the first computing device. In the latter case, the second remote computing device may be connected to the first computing device via any type of network, including a local area network (LAN) or a wide area network (WAN).

[0051] Processor 1008 may include hardware devices having processing capabilities. Processor 1008 may include general-purpose processors, digital signal processors (DSPs), central processing units (CPUs), microcontrollers, application-specific integrated circuits (ASICs), field programmable gate arrays (FPGAs), programmable logic devices, individual gates or It may include at least one of transistor logic components, separate hardware components, or other programmable logic devices. Examples of general-purpose processors include, but are not limited to, microprocessors, any conventional processor, controllers, microcontrollers, or state machines. In some embodiments, the processor 1008 may be implemented using a combination of devices (e.g., a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors working with a DSP core, or any other such configuration). The processor 1008 may receive downlink or sidelink signals from the transceiver 1004 and further process those signals. For example, the processor 1008 may further process the signals to determine the location of device 1000. The processor 1008 may also receive data packets from the transceiver 1004 and further process those packets. In some embodiments, the processor 1008 may be configured to operate memory using a memory controller. In some embodiments, the memory controller may be integrated into the processor 1008. The processor 1008 may be configured to execute computer-readable instructions stored in memory (for example, memory 1006) to cause the device 1000 to perform various functions.

[0052] Device 1000 may include a Global Positioning System (GPS) 1010. The GPS 1010 may be used to enable location-based services or other services based on the geographical location of Device 1000 and / or synchronization between nodes. The GPS 1010 can receive GNSS signals from a single or multiple satellites via the antenna 1002 and provide the geographical location of Device 1000 (e.g., the coordinates of Device 1000). In some embodiments, the GPS 1010 is omitted. In some embodiments, a timer is included.

[0053] Device 1000 may include an input / output (I / O) device 1012 that can be used to transmit the results of signal processing and calculations to a user or another device. The I / O device 1012 may include a user interface that includes a display and input devices for sending user commands to the processor 1008. The display may be configured to show the status of signal reception at device 1000, data stored in memory 1006, the status of signal processing, and calculation results, etc. The display may include, but is not limited to, a cathode ray tube (CRT), a liquid crystal display (LCD), a light-emitting diode (LED), a gas plasma display, a touchscreen, or other image projection device for displaying information to the user. The input device may be any type of computer hardware equipment used to receive data and control signals from the user. The input device may include, but is not limited to, a keyboard, mouse, scanner, digital camera, joystick, trackball, cursor directional keys, touchscreen monitor, or audio / video commander, etc.

[0054] Device 1000 may further include a machine interface 1014, such as an electric bus connecting a transceiver 1004, memory 1006, processor 1008, GPS 1010, and I / O device 1012.

[0055] In some embodiments, device 1000 may be a UE for sidelink positioning (e.g., a UE that needs to acquire positioning information). Processor 1008 executes instructions stored in memory 1006 to determine at least one of one or more SL-PRS resource sets in a slot, or one or more SL-PRS resource set patterns in one or more slots, and one or more An SL-PRS resource set may be configured or pre-configured for one or more SL-PRS transmissions from one or more UEs including this UE, and may be configured or programmed to: select at least one SL-PRS resource set from one or more SL-PRS resource sets based on at least one of random selection, one or more SL-PRS resource set patterns, one or more received control signals, support information received from at least one other UE different from this UE, or support information received from a network node, and transmit at least one of one or more SL-PRS signals or SL-PRS control information based on the selected at least one SL-PRS resource set.

[0056] In some embodiments, device 1000 may be a node for sidelink positioning. Processor 1008 may be configured or programmed to execute instructions stored in memory 1006 to configure one or more SL-PRS resource sets for one or more UEs including the first UE, to obtain information regarding the positioning accuracy of the first UE, and to determine whether to disable at least one SL-PRS resource set configured for the first UE and whether to configure at least one other SL-PRS resource set for the first UE.

[0057] When used in this disclosure, the use of the term "or" in a list of items indicates an inclusive list. A list of items may be accompanied by phrases such as "at least one of" or "one or more of." For example, a list of at least one of A, B, or C includes A or B or C or AB (i.e., A and B) or AC or BC or ABC (i.e., A, B, and C). Also, when used in this disclosure, the phrase "based on" in a list of conditions should not be interpreted as "based solely on" the set of conditions, but rather as "based at least partially on" the set of conditions. For example, a result described as "based on condition A" may be based on both condition A and condition B without departing from the scope of this disclosure.

[0058] In this specification, the terms “to include,” “to contain,” and “to encompass” are used interchangeably and may have the same meaning, and should be interpreted as inclusive and unrestricted. The terms “to include,” “to contain,” and “to encompass” may be used after a list of elements to indicate that at least all of the listed elements in the list are present, but other elements not on the list may also be present. For example, if A includes B and C, then both {B,C} and {B,C,D} are within the scope of A.

[0059] This disclosure describes exemplary configurations that, in relation to the accompanying drawings, do not represent all possible examples or all configurations within the scope of this disclosure. The term “exemplary” should not be interpreted as “preferred” or “advantageous compared to other examples,” but rather as “exemplary, example, or illustration.” By reading this disclosure, including the description of embodiments and drawings, it will be understood that the technology disclosed herein can be implemented using alternative embodiments. A person skilled in the art will understand that the embodiments described herein, or certain features of the embodiments, can be combined to arrive at yet another embodiment for carrying out the technology described herein. Accordingly, this disclosure should not be limited to the examples and designs described herein, but should correspond to the broadest scope that matches the principles and novel features disclosed herein.

[0060] The flowcharts and block diagrams in the figures illustrate examples of the architecture, functionality, and operation of possible implementations of systems, methods, and devices in various embodiments. In alternative implementations, it should be noted that the functions shown in the blocks may occur in a different order than that shown in the diagram. For example, depending on the functions they contain, two consecutively shown blocks may actually be executed substantially simultaneously, or the blocks may sometimes be executed in reverse order. Similarly, additional steps may be included in a manner consistent with the various embodiments, and certain steps may be omitted or combined.

[0061] It is understood that the described embodiments are not mutually exclusive, and that elements, components, materials, or steps described in relation to one embodiment may be combined with other embodiments in an appropriate manner to achieve a desired design objective, or excluded from other embodiments.

[0062] Any reference in this specification to “certain embodiments” or “certain examples of embodiments” means that certain features, structures, or characteristics described in relation to an embodiment may be included in at least one embodiment. The occurrences of the phrases “one embodiment,” “certain embodiments,” or “another embodiment” in various places in this disclosure do not necessarily all refer to the same embodiment, and separate or alternative embodiments are not necessarily mutually exclusive with other embodiments.

[0063] Furthermore, the articles “a” and “an” used in this disclosure and the attached claims should generally be interpreted as meaning “one or more” unless specifically designated to refer to a singular noun or it is clear from the context.

[0064] Unless otherwise explicitly stated, each number and range should be interpreted as an approximation, as if the words “about” or “approximately” preceded the value or range value.

[0065] The elements in the following method claims are listed in a specific order, if any, but unless the enumeration of the claims specifically implies a particular order for carrying out some or all of those elements, those elements are not necessarily intended to be limited to being carried out in that specific order.

[0066] For clarity, it is understood that certain features of this disclosure described in the context of separate embodiments may also be provided in combination in a single embodiment. Conversely, various features of this specification described in the context of a single embodiment for the sake of brevity may also be provided separately, in any suitable partial combination, or as appropriate in any other described embodiment of this specification. Certain features described in the context of different embodiments are not essential features of those embodiments unless so noted.

[0067] It will be further understood that various changes, substitutions, and modifications in the details, materials, and arrangement of the parts described and shown in order to illustrate the nature of the described embodiments can be made by those skilled in the art without departing from the scope. Accordingly, the following claims encompass all such substitutions, changes, and modifications contained in the terms of the claims.

[0068] Item 1: User equipment (UE) for sidelink positioning, The memory that stores the instructions, Processor and The processor is equipped with the following: Determining one or more sidelink positioning reference signal (SL-PRS) resource sets within a slot, or at least one of one or more SL-PRS resource set patterns in one or more slots, wherein the one or more SL-PRS resource sets are configured or pre-configured for one or more SL-PRS transmissions of one or more UEs, including the UE. Selecting at least one SL-PRS resource set from the one or more SL-PRS resource sets based on random selection, one or more SL-PRS resource set patterns, one or more received control signals, support information received from at least one other UE different from the UE, or support information received from a network node, Based on the selected set of at least one SL-PRS resource, transmit at least one of one or more SL-PRS signals or SL-PRS control information. User equipment (UE) configured to perform the following actions.

[0069] Item 2: The UE described in Item 1, wherein the one or more SL-PRS resource sets are one or more valid SL-PRS resource sets configured or pre-configured to be available in at least one slot.

[0070] Item 3: The UE described in Item 1, wherein the one or more SL-PRS resource sets are configured or pre-configured such that each of the one or more SL-PRS resource sets has a corresponding SL-PRS resource identifier (ID).

[0071] Item 4: The UE described in Item 1, wherein the one or more SL-PRS resource sets are configured or preconfigured based on at least one of the priorities of the one or more SL-PRS signals, or one or more congestion indices associated with the one or more SL-PRS signals.

[0072] Item 5: The UE according to item 4, wherein the one or more congestion metrics associated with the one or more SL-PRS signals include at least one of channel busy ratio (CBR) or channel occupancy (CR).

[0073] Item 6: The UE described in Item 2, wherein the one or more SL-PRS resource sets are configured or pre-configured such that in at least one slot, the one or more SL-PRS resource sets are associated with an odd resource set index or an even resource set index.

[0074] Item 7: The UE according to Item 1, wherein the one or more SL-PRS resource sets are configured or pre-configured such that in at least one slot, the separation between two resource elements of any two of the one or more SL-PRS resource sets is an integer or greater.

[0075] Item 8: The integer is the UE described in Item 7, which is configured or pre-configured.

[0076] Item 9: The UE described in Item 7, wherein the two resource elements of any two of the one or more SL-PRS resource sets are adjacent to each other.

[0077] Item 10: The separation between the two resource elements of any two SL-PRS resource sets from the one or more SL-PRS resource sets is at least one of separation in the frequency domain or separation in the time domain, as described in Item 7. .

[0078] Item 11: The UE according to Item 1, wherein the one or more SL-PRS resource sets are configured or pre-configured such that a wider separation between two resource elements of any two of the one or more SL-PRS resource sets is used for SL-PRS signals having at least one of a lower congestion level or a higher priority, and a narrower separation between two resource elements of any two of the one or more SL-PRS resource sets is used for SL-PRS signals having at least one of a higher congestion level or a lower priority.

[0079] Item 12: The UE described in Item 11, wherein the two resource elements of any two of the one or more SL-PRS resource sets are adjacent to each other.

[0080] Item 13: The UE according to item 11, wherein the separation between the two resource elements of any two SL-PRS resource sets from the one or more SL-PRS resource sets is at least one of separation in the frequency domain or separation in the time domain.

[0081] Item 14: The UE according to Item 1, wherein the one or more SL-PRS resource set patterns include a plurality of SL-PRS resource set patterns, and the one or more slots are associated with at least one SL-PRS resource set pattern from among the one or more SL-PRS resource set patterns.

[0082] Item 15: The UE described in Item 14, wherein the one or more SL-PRS resource set patterns are configured or pre-configured, and each of the one or more SL-PRS resource set patterns is associated with the one or more slots.

[0083] Item 16: The UE described in Item 14, wherein the at least one SL-PRS resource set pattern associated with one or more slots differs from one or more SL-PRS resource set patterns of an integer number of adjacent slots, wherein the integer is configured or pre-configured.

[0084] Item 17: The UE described in Item 14, wherein the at least one SL-PRS resource set pattern is associated with an integer number of consecutive slots, the integer being configured or pre-configured.

[0085] Item 18: The UE according to item 14, wherein the at least one SL-PRS resource set pattern is associated with one or more slots identified by one or more mapping tables, the one or more mapping tables include mappings between the at least one SL-PRS resource set pattern and the one or more identified slots, and the one or more mapping tables are configured or pre-configured.

[0086] Item 19: The processor executes the instruction stored in the memory, The UE according to item 2, configured to select at least one specific SL-PRS resource set corresponding to the UE from the one or more SL-PRS resource sets with respect to the at least one slot.

[0087] Item 20: The UE described in Item 1, wherein the one or more SL-PRS resource sets are multiple SL-PRS resource sets configured or pre-configured for multiple UEs, including the UE, and each of the multiple UEs is associated with a corresponding SL-PRS resource set among the multiple SL-PRS resource sets.

[0088] Item 21: The UE described in Item 1, wherein the processor is configured to execute the instructions stored in the memory and, for each SL-PRS transmission, use a different set of SL-PRS resources from the one or more SL-PRS resource sets based on one or more selected circular patterns, wherein the one or more circular patterns are configured by a network node or pre-configured by the UE.

[0089] Item 22: The UE according to item 21, wherein the one or more cyclic patterns are derived based on at least one of the following: the zone in which the UE is located, the anchor group associated with the UE, or the positioning session associated with the UE.

[0090] Item 23: The processor executes the instruction stored in the memory, The UE according to item 1, configured to randomly select, or based on acquired channel sensing information, one or more SL-PRS resource sets corresponding to the UE for the transmission of one or more SL-PRS signals.

[0091] Item 24: The UE described in Item 23 is selected for at least one of the following: one or more initial transmissions in a semi-persistent scheduling (SPS), one or more retransmissions in an SPS, or one or more transmissions in a one-time transmission.

[0092] Item 25: The processor executes the instruction stored in the memory, From among one or more available radio resources having at least one granularity among one or more time resources or one or more frequency resources, one or more radio resources having at least one granularity among one or more slots or one or more subchannels are selected randomly or based on acquired channel sensing information, From the selected one or more wireless resources, one or more SL-PRS resource sets having a granularity of SL-PRS resource sets are selected randomly or based on the acquired channel sensing information. The UE described in item 1 is configured to perform the following actions.

[0093] Item 26: The UE according to item 25, wherein the granularity of at least one of one or more time resources or one or more frequency resources is the granularity of at least one of one or more slots or one or more subchannels.

[0094] Item 27: The UE is a first transmitter UE, and the processor executes the instruction stored in the memory. The UE described in item 1, configured to transmit the SL-PRS control information to one or more second transmitter UEs via unicast, groupcast, or broadcast, either through direct communication or through network nodes.

[0095] Item 28: The UE is a first transmitter UE, and the processor executes the instruction stored in the memory. From the second transmitter UE, the SL-PRS control generated by the second transmitter UE The UE described in item 1, configured to receive information, wherein the received SL-PRS control information includes SL-PRS resource set information of a second transmitter UE relating to at least one of one or more current SL-PRS transmissions or one or more subsequent transmissions.

[0096] Item 29: The UE described in Item 28 receives the SL-PRS control information via direct communication or via a network node.

[0097] Item 30: The processor executes the instruction stored in the memory, The UE according to item 28, configured to determine, based on the received SL-PRS control information, whether to select or re-select one or more SL-PRS resource sets while ensuring minimum separation between the resource elements of the one or more SL-PRS resource sets for the first transmitter UE and the resource elements of the one or more SL-PRS resource sets for the second transmitter UE.

[0098] Item 31: The minimum separation is configured or pre-configured as described in Item 30.

[0099] Item 32: The processor executes the instruction stored in the memory, The UE according to item 28, configured to determine whether to adjust the transmitter power of the first transmitter UE based on at least one of the position of the first transmitter UE, the position of the second transmitter UE, the mobility of the first transmitter UE, or the mobility of the second transmitter UE.

[0100] Item 33: The processor executes the instruction stored in the memory, The UE according to paragraph 30, configured to adjust the transmit power of the first transmitter UE in response to a determination that the minimum separation between the resource elements of the one or more SL-PRS resource sets for the first transmitter UE and the resource elements of the one or more SL-PRS resource sets for the second transmitter UE cannot be satisfied.

[0101] Item 34: The UE according to item 33, wherein the transmit power of the first transmitter UE is adjusted based on at least one of the following: reducing the transmit power of the first transmitter UE when the distance between the first transmitter UE and the second transmitter UE is less than or equal to a first threshold, or maintaining or increasing the transmit power of the first transmitter UE when the distance between the first transmitter UE and the second transmitter UE is greater than a second threshold.

[0102] Item 35: The UE described in Item 1, wherein the selected at least one SL-PRS resource set is dynamically enabled or disabled based on the determination of accuracy in positioning.

[0103] Item 36: The UE described in Item 35, wherein the determination is performed by receiving accuracy information from at least one of the base station, location management function (LMF), or server UE.

[0104] Item 37: The UE is a first transmitter UE, and the processor executes the instruction stored in the memory. Obtaining information from the second transmitter UE regarding one or more SL-PRS resource sets reserved by the second transmitter UE, Based on the information regarding the one or more SL-PRS resource sets reserved by the second transmitter UE, select one or more SL-PRS resource sets. To decide whether to do so or to re-select. The UE described in item 1 is configured to perform the following actions.

[0105] Item 38: The UE according to item 37, wherein the information relating to the one or more SL-PRS resource sets reserved by the second transmitter UE is obtained based on at least one of decoding sidelink control information (SCI) received from the second transmitter UE or measuring one or more SL-PRS signals received from the second transmitter UE.

[0106] Item 39: The UE according to item 38, wherein measuring the one or more SL-PRS signals received from the second transmitter UE includes measuring at least one of the following: reference signal received power (RSRP), received signal strength indicator (RSSI), reference signal received quality (RSRQ), or signal-to-noise interference ratio (SINR) of the one or more SL-PRS signals.

[0107] Item 40: The processor executes the instruction stored in the memory, The UE according to item 37, configured to exclude the one or more SL-PRS resource sets reserved by the second transmitter UE in response to at least one of the following determinations: (1) the separation between the resource elements of the one or more SL-PRS resource sets for the first transmitter UE and the resource elements of the one or more SL-PRS resource sets for the second transmitter UE is less than a first threshold, or (2) one or more signal indicators of the one or more SL-PRS resource sets reserved by the second transmitter UE exceed a second threshold.

[0108] Item 41: The UE is a transmitter UE, and the processor executes the instruction stored in the memory. The UE according to item 1, configured to receive from the receiver UE at least one of one or more signal indices measured by the receiver UE for one or more SL-PRS signals received by the receiver UE, or one or more adjustment instructions.

[0109] Item 42: The UE according to item 41, wherein the one or more signal indicators or the one or more adjustment instructions include at least one of the following: (1) the RSRP of the one or more SL-PRS signals received by the receiver UE, (2) the RSSI of the one or more SL-PRS signals received by the receiver UE, (3) the RSRQ of the one or more SL-PRS signals received by the receiver UE, (4) the SINR of the one or more SL-PRS signals received by the receiver UE, (5) one or more SL-PRS resource sets preferred for the transmitter UE, or (6) one or more SL-PRS resource sets unfavorable for the transmitter UE.

[0110] Item 43: The UE according to item 42, wherein the processor is configured to take into consideration channel sensing information acquired by the transmitter UE and at least one of the one or more signal indicators received from the receiver UE, or the one or more adjustment instructions received from the receiver UE, when executing the instructions stored in the memory to select the at least one SL-PRS resource set.

[0111] Item 44: The UE is a transmitter UE, and the processor executes the instruction stored in the memory. The UE according to item 1, configured to receive from the receiver UE one or more conflict instructions indicating the presence of at least one SL-PRS transmission affecting the receiver UE's reception of the one or more SL-PRS signals.

[0112] Item 45: The UE according to Item 1, wherein the one or more received control signals include at least one of the following: (1) SL-PRS resource set information relating to one or more initial transmissions in the current SPS period; (2) SL-PRS resource set information relating to one or more retransmissions in the current SPS period; (3) SL-PRS resource set information relating to one or more initial transmissions in at least one subsequent SPS period; or (4) SL-PRS resource set information relating to one or more retransmissions in at least one subsequent SPS period.

[0113] Item 46: The UE is a first transmitter UE, and the processor executes the instruction stored in the memory. The UE described in item 1, configured to transmit the SL-PRS control information to one or more second transmitter UEs via unicast, groupcast, or broadcast through an SCI or Media Access Control Protocol Control Element (MAC CE).

[0114] Item 47: The UE described in Item 1, wherein the slot is either a slot in a dedicated SL-PRS resource pool or a slot in a shared SL-PRS resource pool.

[0115] Item 48: The UE described in Item 1, wherein one or more of the one or more SL-PRS resource sets are at least one of one or more time resources or one or more frequency resources.

[0116] Item 49: Each of the one or more SL-PRS resource sets is associated with at least one of the following: SL-PRS resource ID, SL-PRS comb size, SL-PRS comb offset, the starting symbol of the slot, or the number of SL-PRL symbols in the slot, as described in Item 1.

[0117] Item 50: A node for sidelink positioning, The memory that stores the instructions, Processor and The processor is equipped with the following: Configuring one or more sidelink positioning reference signal (SL-PRS) resource sets for one or more user equipment (UEs), including a first UE, To obtain information regarding the positioning accuracy of the aforementioned first UE, Determining whether to disable at least one SL-PRS resource set configured for the first UE, and whether to configure at least one other SL-PRS resource set for the first UE. A node configured to perform the following actions.

[0118] Item 51: The node described in Item 50, wherein the node includes at least one of the following: a base station, a location management function (LMF), or one or more UEs other than the aforementioned UEs.

[0119] Item 52: The node described in Item 51, wherein the UEs other than the one or more UEs are server UEs.

[0120] Item 53: The processor executes the instruction stored in the memory, The node described in item 50, configured to determine the degradation of the positioning accuracy of the first UE based on the configuration of the one or more SL-PRS resource sets for the one or more UEs, one or more measurement reports relating to one or more SL-PRS signals transmitted from the one or more UEs, or at least one of one or more shared movement patterns of one or more other UEs.

[0121] Item 54: The node according to item 50, wherein the one or more SL-PRS resource sets are multiple SL-PRS resource sets for multiple UEs including the first UE, and the processor is configured to execute the instructions stored in the memory to configure the multiple SL-PRS resource sets so that each of the multiple SL-PRS resource sets is available for one or more slots.

[0122] Item 55: The node according to item 50, wherein the processor is configured to execute the instructions stored in the memory to configure one or more SL-PRS resource sets based on the priority of one or more SL-PRS signals of one or more UEs, or at least one of the congestion indices associated with one or more UEs.

[0123] Item 56: The node according to item 50, wherein the processor is configured to execute the instructions stored in the memory to configure the one or more SL-PRS resource sets such that in one or more slots, the one or more SL-PRS resource sets are associated with one or more odd resource set indices or even resource set indices.

[0124] Item 57: The node according to item 50, wherein the processor is configured to execute the instructions stored in the memory to configure one or more SL-PRS resource sets such that the separation between two resource elements of any two of the one or more SL-PRS resource sets is greater than or equal to an integer.

[0125] Item 58: The node described in Item 57, to which the two resource elements are adjacent.

[0126] Item 59: The integer is a node described in item 57, which is configured or pre-configured.

[0127] Item 60: The node according to item 57, wherein the separation between the two resource elements of any two SL-PRS resource sets from the one or more SL-PRS resource sets is at least one of separation in the frequency domain or separation in the time domain.

[0128] Item 61: The node according to item 50, wherein the processor is configured to execute the instructions stored in the memory to configure the one or more SL-PRS resource sets such that a wider separation between two resource elements of any two SL-PRS resource sets from the one or more SL-PRS resource sets is used for one or more of lower congestion levels or higher priorities of the SL-PRS signals, and a narrower separation between two resource elements of any two SL-PRS resource sets from the one or more SL-PRS resource sets is used for one or more of higher congestion levels or lower priorities of the SL-PRS signals.

[0129] Item 62: The UE described in item 61, wherein the two resource elements of any two of the one or more SL-PRS resource sets are adjacent to each other.

[0130] Item 63: The node according to item 61, wherein the separation between the two resource elements of any two SL-PRS resource sets from the one or more SL-PRS resource sets is at least one of separation in the frequency domain or separation in the time domain.

[0131] Item 64: A method for a user device (UE) in sidelink positioning, Determining one or more sidelink positioning reference signal (SL-PRS) resource sets within a slot, or at least one of one or more SL-PRS resource set patterns in one or more slots, wherein the one or more SL-PRS resource sets are configured or pre-configured for one or more SL-PRS transmissions of one or more UEs, including the UE. Selecting at least one SL-PRS resource set from the one or more SL-PRS resource sets based on random selection, one or more SL-PRS resource set patterns, one or more received control signals, support information received from at least one other UE different from the UE, or support information received from a network node, Based on the selected set of at least one SL-PRS resource, transmit at least one of one or more SL-PRS signals or SL-PRS control information. Methods that include...

[0132] Item 65: A method for a node for sidelink positioning, Configuring one or more sidelink positioning reference signal (SL-PRS) resource sets for one or more user equipment (UEs), including a first UE, To obtain information regarding the positioning accuracy of the aforementioned first UE, Determining whether to disable at least one SL-PRS resource set configured for the first UE, and whether to configure at least one other SL-PRS resource set for the first UE. Methods that include...

[0133] Item 66: A non-temporary computer-readable medium storing instructions that can be executed by one or more processors of a user device (UE) in sidelink positioning, wherein the method is Determining one or more sidelink positioning reference signal (SL-PRS) resource sets within a slot, or at least one of one or more SL-PRS resource set patterns in one or more slots, wherein the one or more SL-PRS resource sets are configured or pre-configured for one or more SL-PRS transmissions of one or more UEs, including the UE. Selecting at least one SL-PRS resource set from the one or more SL-PRS resource sets based on random selection, one or more SL-PRS resource set patterns, one or more received control signals, support information received from at least one other UE different from the UE, or support information received from a network node, Based on the selected set of at least one SL-PRS resource, transmit at least one of one or more SL-PRS signals or SL-PRS control information. Non-temporary computer-readable media, including [specific examples of such media].

[0134] Item 67: To perform the method, one or more nodes for sidelink positioning A non-temporary computer-readable medium storing instructions executable by a processor, wherein the method is Configuring one or more sidelink positioning reference signal (SL-PRS) resource sets for one or more user equipment (UEs), including a first UE, To obtain information regarding the positioning accuracy of the aforementioned first UE, Determining whether to disable at least one SL-PRS resource set configured for the first UE, and whether to configure at least one other SL-PRS resource set for the first UE. Non-temporary computer-readable media, including [specific examples of such media].

Claims

1. User equipment (UE) for sidelink positioning, The memory that stores the instructions, Processor and The processor is equipped with the following: Determining one or more sidelink positioning reference signal (SL-PRS) resource sets within a slot, or at least one of one or more SL-PRS resource set patterns in one or more slots, wherein the one or more SL-PRS resource sets are configured or pre-configured for one or more SL-PRS transmissions of one or more UEs, including the UE. Selecting at least one SL-PRS resource set from the one or more SL-PRS resource sets based on random selection, one or more SL-PRS resource set patterns, one or more received control signals, support information received from at least one other UE different from the UE, or support information received from a network node, Based on the selected set of at least one SL-PRS resource, transmit at least one of one or more SL-PRS signals or SL-PRS control information. User equipment (UE) configured to perform the following actions.

2. The one or more SL-PRS resource sets are one or more valid SL-PRS resource sets configured or pre-configured to be available in at least one slot. The UE according to claim 1.

3. The one or more SL-PRS resource sets are configured or pre-configured such that each of the one or more SL-PRS resource sets has a corresponding SL-PRS resource identifier (ID). The UE according to claim 1.

4. The one or more SL-PRS resource sets are configured or preconfigured based on the priority of one or more of the one or more SL-PRS signals, or at least one of the congestion indices associated with the one or more SL-PRS signals. The UE according to claim 1.

5. The UE according to claim 4, wherein the one or more congestion metrics associated with the one or more SL-PRS signals include at least one of channel busy ratio (CBR) or channel occupancy (CR).

6. The one or more SL-PRS resource sets are configured or pre-configured such that in at least one slot, the one or more SL-PRS resource sets are associated with an odd resource set index or an even resource set index. The UE according to claim 2.

7. The one or more SL-PRS resource sets are configured such that, in at least one slot, the separation between two resource elements of any two of the one or more SL-PRS resource sets is an integer or greater. Formed or pre-configured, The UE according to claim 1.

8. The integers mentioned above are configured or pre-configured. The UE according to claim 7.

9. If any two of the SL-PRS resource sets among the one or more SL-PRS resource sets have adjacent resource elements, The UE according to claim 7.

10. The separation between the two resource elements of any two SL-PRS resource sets from the one or more SL-PRS resource sets is at least one of separation in the frequency domain or separation in the time domain. The UE according to claim 7.

11. The one or more SL-PRS resource sets are configured or pre-configured such that a wider separation between two resource elements of any two SL-PRS resource sets from the one or more SL-PRS resource sets is used for SL-PRS signals having at least one of a lower congestion level or a higher priority, and a narrower separation between two resource elements of any two SL-PRS resource sets from the one or more SL-PRS resource sets is used for SL-PRS signals having at least one of a higher congestion level or a lower priority. The UE according to claim 1.

12. If any two of the SL-PRS resource sets among the one or more SL-PRS resource sets have adjacent resource elements, The UE according to claim 11.

13. The separation between the two resource elements of any two SL-PRS resource sets from the one or more SL-PRS resource sets is at least one of separation in the frequency domain or separation in the time domain. The UE according to claim 11.

14. The one or more SL-PRS resource set patterns include a plurality of SL-PRS resource set patterns, and the one or more slots are associated with at least one SL-PRS resource set pattern from among the one or more SL-PRS resource set patterns. The UE according to claim 1.

15. The one or more SL-PRS resource set patterns are configured or pre-configured, and each of the one or more SL-PRS resource set patterns is associated with the one or more slots. The UE according to claim 14.

16. The at least one SL-PRS resource set pattern associated with one or more slots differs from one or more SL-PRS resource set patterns of an integer number of adjacent slots, wherein the integer is configured or pre-configured. The UE according to claim 14.

17. The aforementioned at least one SL-PRS resource set pattern is an integer number of consecutive slots Associated with the set, the integer is configured or preconfigured. The UE according to claim 14.

18. The at least one SL-PRS resource set pattern is associated with one or more slots identified by one or more mapping tables, the one or more mapping tables include mappings between the at least one SL-PRS resource set pattern and the one or more identified slots, and the one or more mapping tables are configured or pre-configured. The UE according to claim 14.

19. The processor executes the instruction stored in the memory, With respect to the at least one slot, it is configured to select at least one specific SL-PRS resource set corresponding to the UE from the one or more SL-PRS resource sets, The UE according to claim 2.

20. The one or more SL-PRS resource sets are a plurality of SL-PRS resource sets configured or pre-configured for a plurality of UEs, including the UE, and each of the plurality of UEs is associated with a corresponding SL-PRS resource set among the plurality of SL-PRS resource sets. The UE according to claim 1.

21. The processor is configured to execute the instructions stored in the memory and, for each SL-PRS transmission, use a different SL-PRS resource set from the one or more SL-PRS resource sets based on one or more selected circular patterns, wherein the one or more circular patterns are configured by the network node or pre-configured by the UE. The UE according to claim 1.

22. The one or more cyclic patterns are derived based on at least one of the zone in which the UE is located, the anchor group associated with the UE, or the positioning session associated with the UE. The UE according to claim 21.

23. The processor executes the instruction stored in the memory, The system is configured to randomly select, or based on acquired channel sensing information, one or more SL-PRS resource sets corresponding to the UE for the transmission of one or more SL-PRS signals. The UE according to claim 1.

24. The at least one SL-PRS resource set is selected for at least one of the following: one or more initial transmissions in semi-persistent scheduling (SPS), one or more retransmissions in SPS, or one or more transmissions in one-time transmissions. The UE according to claim 23.

25. The processor executes the instruction stored in the memory, From among one or more available radio resources having a granularity of at least one of one or more time resources or one or more frequency resources, Selecting one or more radio resources having at least one granularity of one or more slots or one or more subchannels, based on the dam or acquired channel sensing information, From the selected one or more wireless resources, one or more SL-PRS resource sets having the granularity of an SL-PRS resource set are selected randomly or based on the acquired channel sensing information. Configured to perform, The UE according to claim 1.

26. The granularity of at least one of one or more time resources or one or more frequency resources is the granularity of at least one of one or more slots or one or more subchannels. The UE according to claim 25.

27. The UE is a first transmitter UE, and the processor executes the instruction stored in the memory. The SL-PRS control information is configured to be transmitted to one or more second transmitters UE via unicast, groupcast, or broadcast, either through direct communication or through network nodes. The UE according to claim 1.

28. The UE is a first transmitter UE, and the processor executes the instruction stored in the memory. A second transmitter UE is configured to receive SL-PRS control information generated by the second transmitter UE, and the received SL-PRS control information includes SL-PRS resource set information of the second transmitter UE relating to at least one of one or more current SL-PRS transmissions or one or more subsequent transmissions. The UE according to claim 1.

29. The SL-PRS control information is received via direct communication or via a network node. The UE according to claim 28.

30. The processor executes the instruction stored in the memory, Based on the received SL-PRS control information, the system is configured to determine whether to select or re-select one or more SL-PRS resource sets, while ensuring minimum separation between the resource elements of the one or more SL-PRS resource sets for the first transmitter UE and the resource elements of the one or more SL-PRS resource sets for the second transmitter UE. The UE according to claim 28.

31. The minimum isolation is configured or pre-configured. The UE according to claim 30.

32. The processor executes the instruction stored in the memory, The system is configured to determine whether to adjust the transmitter power of the first transmitter UE based on at least one of the following: the position of the first transmitter UE, the position of the second transmitter UE, the mobility of the first transmitter UE, or the mobility of the second transmitter UE. The UE according to claim 28.

33. The processor executes the instruction stored in the memory, The system is configured to adjust the transmit power of the first transmitter UE in response to a determination that the minimum separation between the resource elements of the one or more SL-PRS resource sets for the first transmitter UE and the resource elements of the one or more SL-PRS resource sets for the second transmitter UE cannot be satisfied. The UE according to claim 30.

34. The transmission power of the first transmitter UE is adjusted based on at least one of the following: reducing the transmission power of the first transmitter UE when the distance between the first transmitter UE and the second transmitter UE is less than or equal to a first threshold, or maintaining or increasing the transmission power of the first transmitter UE when the distance between the first transmitter UE and the second transmitter UE is greater than a second threshold. The UE described in claim 33.

35. The selected at least one SL-PRS resource set is dynamically enabled or disabled based on the determination of accuracy in positioning. The UE according to claim 1.

36. The aforementioned decision is made by receiving accuracy information from at least one of the following: a base station, a location management function (LMF), or a server UE. The UE described in claim 35.

37. The UE is a first transmitter UE, and the processor executes the instruction stored in the memory. Obtaining information from the second transmitter UE regarding one or more SL-PRS resource sets reserved by the second transmitter UE, Based on the information regarding the one or more SL-PRS resource sets reserved by the second transmitter UE, it is determined whether to select or re-select one or more SL-PRS resource sets. Configured to perform, The UE according to claim 1.

38. The information relating to the one or more SL-PRS resource sets reserved by the second transmitter UE is obtained based on at least one of the following: decoding sidelink control information (SCI) received from the second transmitter UE, or measuring one or more SL-PRS signals received from the second transmitter UE. The UE described in claim 37.

39. Measuring the one or more SL-PRS signals received from the second transmitter UE includes measuring at least one of the following for the one or more SL-PRS signals: reference signal received power (RSRP), received signal strength indicator (RSSI), reference signal received quality (RSRQ), or signal-to-noise interference ratio (SINR). The UE according to claim 38.

40. The processor executes the instruction stored in the memory, (1) The separation between the resource elements of the one or more SL-PRS resource sets for the first transmitter UE and the resource elements of the one or more SL-PRS resource sets for the second transmitter UE is less than a first threshold, or (2) One or more signal indicators of the one or more SL-PRS resource sets reserved by the second transmitter UE exceed a second threshold, whichever is less. It is configured to exclude one or more SL-PRS resource sets reserved by the second transmitter UE in response to at least one decision. The UE described in claim 37.

41. The UE is a transmitter UE, and the processor executes the instruction stored in the memory. The receiver UE is configured to receive at least one of the following: one or more signal indices measured by the receiver UE for one or more SL-PRS signals received by the receiver UE, or one or more adjustment instructions. The UE according to claim 1.

42. The one or more signal indicators or the one or more adjustment instructions include at least one of the following: (1) the RSRP of the one or more SL-PRS signals received by the receiver UE; (2) the RSSI of the one or more SL-PRS signals received by the receiver UE; (3) the RSRQ of the one or more SL-PRS signals received by the receiver UE; (4) the SINR of the one or more SL-PRS signals received by the receiver UE; (5) one or more SL-PRS resource sets preferred for the transmitter UE; or (6) one or more SL-PRS resource sets unfavorable for the transmitter UE. The UE according to claim 41.

43. The processor is configured to execute the instructions stored in the memory to select the at least one SL-PRS resource set, taking into consideration the channel sensing information acquired by the transmitter UE and at least one of the one or more signal indicators received from the receiver UE, or the one or more adjustment instructions received from the receiver UE. The UE according to claim 42.

44. The UE is a transmitter UE, and the processor executes the instruction stored in the memory. The receiver UE is configured to receive one or more conflict instructions from the receiver UE indicating the presence of at least one SL-PRS transmission that affects the receiver UE's reception of the one or more SL-PRS signals. The UE according to claim 1.

45. The one or more received control signals include at least one of the following: (1) SL-PRS resource set information relating to one or more initial transmissions within the current SPS period; (2) SL-PRS resource set information relating to one or more retransmissions within the current SPS period; (3) SL-PRS resource set information relating to one or more initial transmissions within at least one subsequent SPS period; or (4) SL-PRS resource set information relating to one or more retransmissions within at least one subsequent SPS period. The UE according to claim 1.

46. The UE is a first transmitter UE, and the processor executes the instruction stored in the memory. The SL-PRS control information is configured to be transmitted to one or more second transmitter UEs via unicast, groupcast, or broadcast through SCI or Media Access Control Protocol Control Element (MAC CE), The UE according to claim 1.

47. The aforementioned slot is either a slot in a dedicated SL-PRS resource pool or a slot in a shared SL-PRS resource pool. The UE according to claim 1.

48. One or more of the one or more SL-PRS resource sets are at least one of one or more time resources or one or more frequency resources. The UE according to claim 1.

49. Each of the one or more SL-PRS resource sets is associated with at least one of the following: an SL-PRS resource ID, an SL-PRS comb size, an SL-PRS comb offset, the starting symbol of the slot, or the number of SL-PRL symbols in the slot. The UE according to claim 1.

50. A node for sidelink positioning, The memory that stores the instructions, Processor and The processor is equipped with the following: Configuring one or more sidelink positioning reference signal (SL-PRS) resource sets for one or more user devices (UEs) including a first UE, To obtain information regarding the positioning accuracy of the first UE, To determine whether to disable at least one SL-PRS resource set configured for the first UE, and whether to configure at least one other SL-PRS resource set for the first UE. A node configured to perform the following actions.

51. The node includes at least one of the following: a base station, a location management function (LMF), or a UE other than the one or more UEs. The node according to claim 50.

52. Any UE other than the aforementioned one or more UEs is a server UE. The node according to claim 51.

53. The processor executes the instruction stored in the memory, The system is configured to determine the degradation of the positioning accuracy of the first UE based on the configuration of the one or more SL-PRS resource sets for the one or more UEs, one or more measurement reports relating to the one or more SL-PRS signals transmitted from the one or more UEs, or at least one of the one or more shared movement patterns of one or more other UEs. The node according to claim 50.

54. The one or more SL-PRS resource sets are a plurality of SL-PRS resource sets for a plurality of UEs including the first UE, and the processor is configured to execute the instructions stored in the memory to configure the plurality of SL-PRS resource sets so that each of the plurality of SL-PRS resource sets is available for use in one or more slots. The node according to claim 50.

55. The processor executes the instructions stored in the memory to produce one or more The system is configured to configure one or more SL-PRS resource sets based on the priority of one or more SL-PRS signals of one or more UEs, or at least one of the congestion indices associated with one or more UEs. The node according to claim 50.

56. The processor is configured to execute the instructions stored in the memory to configure one or more SL-PRS resource sets in one or more slots such that each of the one or more SL-PRS resource sets is associated with one or more odd resource set indices or even resource set indices. The node according to claim 50.

57. The processor is configured to execute the instructions stored in the memory to configure one or more SL-PRS resource sets such that the separation between two resource elements of any two of the one or more SL-PRS resource sets is greater than or equal to a certain integer. The node according to claim 50.

58. The two resource elements mentioned above are adjacent to each other. The node according to claim 57.

59. The integers mentioned above are configured or pre-configured. The node according to claim 57.

60. The separation between the two resource elements of any two SL-PRS resource sets from the one or more SL-PRS resource sets is at least one of separation in the frequency domain or separation in the time domain. The node according to claim 57.

61. The processor is configured to execute the instructions stored in the memory to configure one or more SL-PRS resource sets such that a wider separation between two resource elements of any two SL-PRS resource sets from the one or more SL-PRS resource sets is used for one or more lower congestion levels or higher priorities of the SL-PRS signal, and a narrower separation between two resource elements of any two SL-PRS resource sets from the one or more SL-PRS resource sets is used for one or more higher congestion levels or lower priorities of the SL-PRS signal. The node according to claim 50.

62. If any two of the SL-PRS resource sets among the one or more SL-PRS resource sets have adjacent resource elements, The UE according to claim 61.

63. The separation between the two resource elements of any two SL-PRS resource sets from the one or more SL-PRS resource sets is at least one of separation in the frequency domain or separation in the time domain. The node according to claim 61.

64. A method for user equipment (UE) in sidelink positioning, Determining one or more sidelink positioning reference signal (SL-PRS) resource sets within a slot, or at least one of one or more SL-PRS resource set patterns in one or more slots, wherein the one or more SL-PRS resource sets are configured or pre-configured for one or more SL-PRS transmissions of one or more UEs, including the UE. Selecting at least one SL-PRS resource set from the one or more SL-PRS resource sets based on random selection, one or more SL-PRS resource set patterns, one or more received control signals, support information received from at least one other UE different from the UE, or support information received from a network node, Based on the selected set of at least one SL-PRS resource, transmit at least one of one or more SL-PRS signals or SL-PRS control information. Methods that include...

65. A method for a node for sidelink positioning, Configuring one or more sidelink positioning reference signal (SL-PRS) resource sets for one or more user devices (UEs) including a first UE, To obtain information regarding the positioning accuracy of the first UE, To determine whether to disable at least one SL-PRS resource set configured for the first UE, and whether to configure at least one other SL-PRS resource set for the first UE. Methods that include...

66. To carry out the method, a non-temporary computer-readable medium storing instructions that can be executed by one or more processors of a user device (UE) in side-link positioning, wherein the method is Determining one or more sidelink positioning reference signal (SL-PRS) resource sets within a slot, or at least one of one or more SL-PRS resource set patterns in one or more slots, wherein the one or more SL-PRS resource sets are configured or pre-configured for one or more SL-PRS transmissions of one or more UEs, including the UE. Selecting at least one SL-PRS resource set from the one or more SL-PRS resource sets based on random selection, one or more SL-PRS resource set patterns, one or more received control signals, support information received from at least one other UE different from the UE, or support information received from a network node, Based on the selected set of at least one SL-PRS resource, transmit at least one of one or more SL-PRS signals or SL-PRS control information. Non-temporary computer-readable media, including [specific examples of such media].

67. To carry out the method, a non-temporary computer-readable medium storing instructions that can be executed by one or more processors of a node for sidelink positioning, wherein the method is Configuring one or more sidelink positioning reference signal (SL-PRS) resource sets for one or more user devices (UEs) including a first UE, To obtain information regarding the positioning accuracy of the first UE, Whether to disable at least one SL-PRS resource set configured for the first UE, and at least one other SL-PRS for the first UE To determine whether to configure a resource set, Non-temporary computer-readable media, including [specific examples of such media].

Images