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KR-102961942-B1 - Network configuration-based sidelink positioning method and device

KR102961942B1KR 102961942 B1KR102961942 B1KR 102961942B1KR-102961942-B1

Abstract

A method for a first device to perform wireless communication and a device supporting the same are provided. The method comprises the steps of: transmitting information related to a sidelink (SL) positioning group to a base station; receiving information related to a positioning reference signal (SL PRS) resource from the base station; and transmitting or receiving an SL PRS based on the SL PRS resource, wherein the SL PRS is a reference signal for positioning performed between a plurality of devices within the SL positioning group, and the SL PRS resource may be set based on information related to the SL positioning group.

Inventors

  • 고우석
  • 서한별

Assignees

  • 엘지전자 주식회사

Dates

Publication Date
20260507
Application Date
20210826
Priority Date
20200826

Claims (20)

  1. In terms of method, A first device transmitting information related to a positioning group to a base station; The first device receives information related to a PRS (positioning reference signal) resource from the base station; and The first device comprises the step of transmitting or receiving a PRS based on the PRS resource; wherein The above PRS is a reference signal for positioning performed among a plurality of devices within the positioning group, and Information related to the above positioning group includes information related to the number of devices belonging to the above positioning group, and A method in which the time interval between symbols included in the above PRS resource or the frequency interval of the comb pattern of the above PRS resource is set based on information related to the number of the devices.
  2. In Article 1, The above positioning group is determined by the above base station, method.
  3. In Article 1, A method in which the positioning group is determined by an agreement between the first device and at least one device performing positioning with the first device.
  4. In Article 1, The information related to the above positioning group further includes information related to the distance between devices belonging to the above positioning group, and A method in which the number of symbols included in the above PRS resource or the bandwidth of the above PRS resource is set based on information related to the distance.
  5. In Article 4, A method in which the number of symbols included in the PRS resource is set larger as the distance above increases.
  6. In Article 4, A method in which the bandwidth of the PRS resource is set smaller as the distance above increases.
  7. In Article 4, A method in which information related to the distance includes the zone ID of the first device or information related to the maximum distance between the devices.
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  9. In Article 1, A method in which the time interval between symbols included in the PRS resource is set larger as the number of the above devices increases.
  10. In Article 1, A method in which the frequency spacing of the comb pattern of the PRS resource is set larger as the number of the above devices increases.
  11. In Article 1, A method comprising at least one of the information related to the positioning group, the ID information of the first device, the number of positioning groups to which the first device belongs, or the ID information of the positioning group to which the first device belongs.
  12. In Article 1, A method further comprising the step of receiving information related to the type of positioning from a location server.
  13. In Article 12, The above-mentioned positioning type includes at least one of TDOA (Time Difference of Arrival)-based positioning, RTT (Round Trip Time)-based positioning, AoA (Angle of Arrival)-based positioning, AoD (Angle of Departure)-based positioning, or DAS (Distributed Antenna System)-based positioning, and A method comprising at least one of the information related to the above PRS resource, the PRS ID, the type of the PRS resource, the periodicity of the PRS, the number of repetitions of the PRS, information related to the time resource for the PRS, or information related to the frequency resource for the PRS.
  14. In the first device, At least one transmitter/receiver; At least one processor; and The first device is configured to perform an operation based on the instructions being executed by the at least one processor, wherein the operation comprises: at least one memory connected to the at least one processor and storing instructions, the instructions being executed by the at least one processor. Transmitting information related to the positioning group to the base station; Receiving information related to a PRS (positioning reference signal) resource from the base station; and Transmitting or receiving PRS based on the above PRS resources; including, The above PRS is a reference signal for positioning performed among a plurality of devices within the positioning group, and Information related to the above positioning group includes information related to the number of devices belonging to the above positioning group, and A first device, wherein the time interval between symbols included in the above PRS resource or the frequency interval of the comb pattern of the above PRS resource is set based on information related to the number of the above devices.
  15. In a processing device, At least one processor; and The first device is configured to perform an operation based on the instructions being executed by the at least one processor, wherein the operation comprises: at least one memory connected to the at least one processor and storing instructions, the instructions being executed by the at least one processor. Transmitting information related to the positioning group to the base station; Receiving information related to a PRS (positioning reference signal) resource from the base station; and Transmitting or receiving PRS based on the above PRS resources; including, The above PRS is a reference signal for positioning performed among a plurality of devices within the positioning group, and Information related to the above positioning group includes information related to the number of devices belonging to the above positioning group, and A processing device in which the time interval between symbols included in the above PRS resource or the frequency interval of the comb pattern of the above PRS resource is set based on information related to the number of the above devices.
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  17. In terms of method, A base station receiving information related to a positioning group from a first device; and The above base station transmits information related to a PRS (positioning reference signal) resource to the first device; wherein The above PRS resource is a resource for transmitting and receiving a reference signal for positioning among a plurality of devices within the above positioning group, and Information related to the above positioning group includes information related to the number of devices belonging to the above positioning group, and A method in which the time interval between symbols included in the above PRS resource or the frequency interval of the comb pattern of the above PRS resource is set based on information related to the number of the devices.
  18. In the case of a base station, At least one transmitter/receiver; At least one processor; and The base station is configured to perform an operation based on the instructions being executed by the at least one processor, wherein the operation comprises: at least one memory connected to the at least one processor and storing instructions, wherein the instructions are executed by the at least one processor. Receiving information related to a positioning group from a first device; and Transmitting information related to a PRS (positioning reference signal) resource to the first device; wherein The above PRS resource is a resource for transmitting and receiving a reference signal for positioning among a plurality of devices within the above positioning group, and Information related to the above positioning group includes information related to the number of devices belonging to the above positioning group, and A base station in which the time interval between symbols included in the above PRS resource or the frequency interval of the comb pattern of the above PRS resource is set based on information related to the number of the above devices.
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Description

Network configuration-based sidelink positioning method and device The present disclosure relates to a wireless communication system. Sidelink (SL) refers to a communication method that establishes a direct link between User Equipment (UE) units, allowing them to directly exchange voice or data without passing through a Base Station (BS). SL is being considered as a solution to address the burden on base stations caused by rapidly increasing data traffic. V2X (vehicle-to-everything) refers to a communication technology that exchanges information with other vehicles, pedestrians, and infrastructure-equipped objects via wired or wireless communication. V2X can be classified into four types: V2V (vehicle-to-vehicle), V2I (vehicle-to-infrastructure), V2N (vehicle-to-network), and V2P (vehicle-to-pedestrian). V2X communication can be provided through the PC5 interface and/or the Uu interface. Meanwhile, as more communication devices require larger communication capacities, the need for improved mobile broadband communication compared to existing Radio Access Technology (RAT) is emerging. Accordingly, communication systems considering services or terminals sensitive to reliability and latency are being discussed; next-generation radio access technology that incorporates improved mobile broadband communication, Massive Machine Type Communication (MTC), and Ultra-Reliable and Low Latency Communication (URLC) can be referred to as new radio access technology (new RAT) or new radio (NR). Vehicle-to-everything (V2X) communication can also be supported in NR. FIG. 1 is a diagram illustrating a comparison between V2X communication based on RAT prior to NR and V2X communication based on NR. An embodiment of FIG. 1 can be combined with various embodiments of the present disclosure. Regarding V2X communication, prior to NR, RATs mainly discussed methods for providing safety services based on V2X messages such as BSM (Basic Safety Message), CAM (Cooperative Awareness Message), and DENM (Decentralized Environmental Notification Message). V2X messages can include location information, dynamic information, attribute information, etc. For example, a terminal can transmit a CAM of the periodic message type and/or a DENM of the event-triggered message type to another terminal. Since then, regarding V2X communication, various V2X scenarios have been presented in NR. For example, various V2X scenarios may include vehicle platooning, advanced driving, extended sensors, remote driving, etc. Figure 1 is a diagram illustrating a comparison between V2X communication based on RAT prior to NR and V2X communication based on NR. FIG. 2 shows the structure of an NR system according to one embodiment of the present disclosure. FIG. 3 shows a radio protocol architecture according to one embodiment of the present disclosure. FIG. 4 shows the structure of a wireless frame of NR according to one embodiment of the present disclosure. FIG. 5 shows a slot structure of an NR frame according to one embodiment of the present disclosure. FIG. 6 shows an example of a BWP according to one embodiment of the present disclosure. FIG. 7 shows a terminal that performs V2X or SL communication according to one embodiment of the present disclosure. FIG. 8 illustrates a procedure in which a terminal performs V2X or SL communication according to a transmission mode, in accordance with one embodiment of the present disclosure. FIG. 9 shows three cast types according to one embodiment of the present disclosure. FIG. 10 shows a resource unit for CBR measurement according to one embodiment of the present disclosure. FIG. 11 illustrates an example of an architecture in a 5G system capable of positioning a UE connected to an NG-RAN (Next Generation-Radio Access Network) or E-UTRAN according to an embodiment of the present disclosure. FIG. 12 shows an example of an implementation of a network for measuring the location of a UE according to one embodiment of the present disclosure. FIG. 13 shows an example of a protocol layer used to support the transmission of LTE Positioning Protocol (LPP) messages between an LMF and a UE according to an embodiment of the present disclosure. FIG. 14 shows an example of a protocol layer used to support the transmission of NRPPa (NR Positioning Protocol A) PDUs between an LMF and an NG-RAN node according to one embodiment of the present disclosure. FIG. 15 is a drawing for explaining an OTDOA (Observed Time Difference Of Arrival) positioning method according to one embodiment of the present disclosure. FIG. 16 illustrates a procedure for a terminal to receive auxiliary data from a location server according to one embodiment of the present disclosure. FIG. 17 illustrates a procedure for a terminal to receive first auxiliary data and second auxiliary data according to one embodiment of the present disclosure. FIG. 18 illustrates a procedure in which a terminal performs SL positioning based on SL-PRS resources according to one embodiment of t