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KR-20260066718-A - Measurement of Joint UU and Sidelink Reference Signal Time Difference (RSTD) for Joint UU and Sidelink Positioning

KR20260066718AKR 20260066718 AKR20260066718 AKR 20260066718AKR-20260066718-A

Abstract

Techniques for wireless communication are disclosed. In one embodiment, a user device (UE) acquires at least one reference node for one or more common downlink and sidelink reference signal time difference (RSTD) measurements and (1) one or more downlink RSTD (DL-RSTD) measurements, (2) one or more sidelink RSTD (SL-RSTD) measurements, or (3) both, and determines one or more common downlink and sidelink RSTD measurements based on one or more reference signal resources transmitted by at least one reference node and (1) one or more first downlink positioning reference signal (DL-PRS) resources transmitted by one or more first transmit-receive points (TRPs) or (2) one or more first sidelink positioning reference signal (SL-PRS) resources transmitted by one or more first sidelink anchor UEs.

Inventors

  • 마놀라코스 알렉산드로스
  • 쿠마르 무케쉬

Assignees

  • 퀄컴 인코포레이티드

Dates

Publication Date
20260512
Application Date
20240731
Priority Date
20230914

Claims (20)

  1. As user equipment (UE), One or more memories; One or more transceivers; and The above includes one or more memories and one or more processors communicationly coupled to the above one or more transceivers, wherein the one or more processors are, alone or in combination, Acquiring at least one reference node for one or more joint downlink and sidelink reference signal time difference (RSTD) measurements and (1) one or more downlink RSTD (DL-RSTD) measurements, (2) one or more sidelink RSTD (SL-RSTD) measurements, or (3) both; User equipment (UE) configured to determine one or more joint downlink and sidelink RSTD measurements based on one or more reference signal resources transmitted by at least one reference node and (1) one or more first downlink positioning reference signal (DL-PRS) resources transmitted by one or more first transmit-receive points (TRPs) or (2) one or more first sidelink positioning reference signal (SL-PRS) resources transmitted by one or more first sidelink anchor UEs.
  2. In paragraph 1, The above at least one reference node is composed of a reference TRP and a reference sidelink anchor UE, and User equipment (UE), wherein the one or more reference signal resources include one or more DL-PRS resources transmitted by the reference TRP and one or more SL-PRS resources transmitted by the reference sidelink anchor UE.
  3. In paragraph 2, the above one or more processors, either alone or in combination, also, Determining the one or more DL-RSTD measurements based on the one or more DL-PRS resources transmitted by the reference TRP and the one or more second DL-PRS resources transmitted by the one or more second TRPs; User equipment (UE) configured to determine the one or more SL-RSTD measurements based on the one or more SL-PRS resources transmitted by the reference sidelink anchor UE and the one or more second SL-PRS resources transmitted by one or more second sidelink anchor UEs.
  4. In paragraph 2, the one or more processors configured to determine the one or more joint downlink and sidelink RSTD measurements are, alone or in combination, Determining the one or more joint downlink and sidelink (RSTD) measurements based on the one or more DL-PRS resources transmitted by the reference TRP and (1) the one or more first DL-PRS resources transmitted by the one or more first TRPs or (2) the one or more first SL-PRS resources transmitted by the one or more first sidelink anchor UEs; or User equipment (UE), comprising one or more processors configured to determine the one or more common downlink and sidelink (RSTD) measurements based on the one or more SL-PRS resources transmitted by the reference sidelink anchor UE and (1) the one or more first DL-PRS resources transmitted by the one or more first TRPs or (2) the one or more first SL-PRS resources transmitted by the one or more first sidelink anchor UEs.
  5. In paragraph 1, The above at least one reference node is composed of three reference nodes, and The three reference nodes are a reference TRP for the one or more DL-RSTD measurements, a reference sidelink anchor UE for the one or more SL-RSTD measurements, and a reference node for the joint downlink and sidelink RSTD measurements, and User equipment (UE), wherein the one or more reference signal resources include one or more DL-PRS resources transmitted by the reference TRP, one or more SL-PRS resources transmitted by the reference sidelink anchor UE, and one or more PRS resources transmitted by the reference node.
  6. In paragraph 5, the above one or more processors, either alone or in combination, also, Determining the one or more DL-RSTD measurements based on the one or more DL-PRS resources transmitted by the reference TRP and the one or more second DL-PRS resources transmitted by the one or more second TRPs; User equipment (UE) configured to determine the one or more SL-RSTD measurements based on the one or more SL-PRS resources transmitted by the reference sidelink anchor UE and the one or more second SL-PRS resources transmitted by one or more second sidelink anchor UEs.
  7. In paragraph 1, the above one or more processors are, alone or in combination, also, Through the one or more transceivers, receiving from a location server, the configuration of the one or more reference signal resources, the one or more first DL-PRS resources, and the one or more SL-PRS resources; Receiving a set of identifiers from a location server through the one or more transceivers, wherein each identifier in the set of identifiers identifies a pair of DL-PRS resources among a plurality of DL-PRS resources including the one or more first DL-PRS resources, and SL-PRS resources among a plurality of SL-PRS resources including the one or more first SL-PRS resources; User equipment (UE) configured to report a subset of an identifier set to a location server via the one or more transceivers, wherein each identifier in the subset of the identifier set identifies a pair of DL-PRS resources among the one or more first DL-PRS resources and SL-PRS resources among the one or more first SL-PRS resources.
  8. In paragraph 7, a subset of the identifier set is a user device (UE) reported to the location server instead of the identifiers of the one or more first DL-PRS resources and the one or more first SL-PRS resources.
  9. In paragraph 1, the above one or more processors are, alone or in combination, also, Receiving a request from a location server, through the one or more transceivers, to obtain the one or more common downlink and sidelink RSTD measurements, the one or more DL-RSTD measurements, and the one or more SL-RSTD measurements; User equipment (UE) configured to report the one or more common downlink and sidelink RSTD measurements, the one or more DL-RSTD measurements, and the one or more SL-RSTD measurements to a location server via the one or more transceivers in response to the above request.
  10. In paragraph 9, the request is a user device (UE) indicating the number of one or more common downlink and sidelink RSTD measurements to be reported.
  11. In paragraph 1, The above at least one reference node is a first side link anchor UE among a plurality of side link anchor UEs, and The above plurality of sidelink anchor UEs are user equipment (UE) belonging to the same timing error group (TEG).
  12. In Clause 11, among the plurality of side link anchor UEs, different side link anchor UEs For each reporting opportunity of the one or more joint downlink and sidelink RSTD measurements, the one or more DL-RSTD measurements, and the one or more SL-RSTD measurements, Every T milliseconds (ms) (where T is an integer greater than or equal to 1), or User equipment (UE) selected as at least one reference node for every N consecutive measurement opportunities (where N is an integer greater than or equal to 1).
  13. In paragraph 1, the above one or more processors are, alone or in combination, also, User equipment (UE) configured to receive, through the one or more transceivers, a priority rule for measuring at least a plurality of SL-PRS resources, including the one or more first SL-PRS resources, from a location server.
  14. In Paragraph 13, the above one or more processors, either alone or in combination, also, Measure a plurality of DL-PRS resources, including one or more first DL-PRS resources, in a priority order based on the above priority rule; User equipment (UE) configured to measure the plurality of SL-PRS resources in a priority order based on the above priority rule.
  15. In Paragraph 14, All of the above-mentioned plurality of SL-PRS resources are measured after all of the above-mentioned plurality of DL-PRS resources have been measured, or All of the above-mentioned plurality of DL-PRS resources are measured after all of the above-mentioned plurality of SL-PRS resources have been measured, or User equipment (UE), wherein the measurements of the plurality of SL-PRS resources alternate with the measurements of the plurality of DL-PRS resources.
  16. As user equipment (UE), One or more memories; One or more transceivers; and The above includes one or more memories and one or more processors communicationly coupled to the above one or more transceivers, wherein the one or more processors are, alone or in combination, Acquire a single reference node for one or more downlink reference signal time difference (DL-RSTD) measurements and one or more sidelink RSTD (SL-RSTD) measurements; Determining one or more DL-RSTD measurements based on one or more reference signal resources transmitted by the single reference node and one or more first downlink positioning reference signal (DL-PRS) resources transmitted by one or more first transmit-receive points (TRPs); and User equipment (UE) configured to determine the one or more SL-RSTD measurements based on the one or more reference signal resources transmitted by the single reference node and the one or more first sidelink positioning reference signal (SL-PRS) resources transmitted by one or more first sidelink anchor UEs.
  17. In paragraph 16, the above one or more processors, either alone or in combination, also, User equipment (UE) configured to determine one or more joint downlink and sidelink RSTD measurements based on one or more reference signal resources transmitted by the single reference node and (1) one or more second DL-PRS resources transmitted by one or more second TRPs or (2) one or more second SL-PRS resources transmitted by one or more second sidelink anchor UEs.
  18. In Clause 16, the single reference node is a user device (UE) obtained from a location server.
  19. In paragraph 18, the above one or more processors, either alone or in combination, also, Determining a second single reference node different from the above single reference node; User equipment (UE) configured to report the indication of the second single reference node to the location server via the one or more transceivers above.
  20. A wireless communication method performed by user equipment (UE), A step of acquiring at least one reference node for one or more joint downlink and sidelink reference signal time difference (RSTD) measurements and (1) one or more downlink RSTD (DL-RSTD) measurements, (2) one or more sidelink RSTD (SL-RSTD) measurements, or (3) both; and A wireless communication method performed by a user device (UE), comprising the step of determining one or more common downlink and sidelink RSTD measurements based on one or more reference signal resources transmitted by at least one reference node and (1) one or more first downlink positioning reference signal (DL-PRS) resources transmitted by one or more first transmit-receive points (TRPs) or (2) one or more first sidelink positioning reference signal (SL-PRS) resources transmitted by one or more first sidelink anchor UEs.

Description

Measurement of Joint UU and Sidelink Reference Signal Time Difference (RSTD) for Joint UU and Sidelink Positioning 1.Field of the present disclosure The embodiments of the present disclosure generally relate to wireless communication. Background Technology Wireless communication systems have evolved through various generations, including first-generation analog wireless telephone services (1G), second-generation (2G) digital wireless telephone services (including intermediate 2.5G and 2.75G networks), third-generation (3G) high-speed data, internet-enabled wireless services, and fourth-generation (4G) services (e.g., LTE (Long Term Evolution), or WiMax). Currently, many different types of wireless communication systems are in use, including cellular and PCS (personal communication service) systems. Examples of known cellular systems include cellular analog AMPS (advanced mobile phone system) and digital cellular systems based on CDMA (code division multiple access), FDMA (frequency division multiple access), TDMA (time division multiple access), GSM (Global System for Mobile communications), etc. The 5th generation (5G) wireless standard, referred to as New Radio (NR), enables higher data transmission speeds, a greater number of connections, and better coverage, among other improvements. The 5G standard, according to the Next Generation Mobile Networks Alliance, is designed to provide higher data rates, more accurate positioning (based on RS-P (reference signals for positioning), such as downlink, uplink, or sidelink PRS (positioning reference signals)), and other technical enhancements compared to previous standards. Among other things, V2X (vehicle-to-everything) communication technologies are being implemented to support autonomous driving applications, such as wireless communication between vehicles, between vehicles and roadside infrastructure, and between vehicles and pedestrians, by utilizing the increased data rates and reduced latency of 5G. The following presents a simplified summary relating to one or more embodiments disclosed herein. Accordingly, the following summary should not be construed as a comprehensive overview relating to all embodiments considered, nor should it be construed as identifying key or decisive elements relating to all embodiments considered, or describing categories associated with any particular embodiment. Accordingly, the following summary is intended solely to present specific concepts relating to one or more embodiments relating to the mechanisms disclosed herein, in a simplified form preceding the detailed description provided below. In one embodiment, a wireless communication method performed by a user device (UE) comprises the steps of: acquiring at least one reference node for one or more common downlink and sidelink reference signal time difference (RSTD) measurements and (1) one or more downlink RSTD (DL-RSTD) measurements, (2) one or more sidelink RSTD (SL-RSTD) measurements, or (3) both; and determining one or more common downlink and sidelink RSTD measurements based on one or more reference signal resources transmitted by the at least one reference node and (1) one or more first downlink positioning reference signal (DL-PRS) resources transmitted by one or more first transmit-receive points (TRPs) or (2) one or more first sidelink positioning reference signal (SL-PRS) resources transmitted by one or more first sidelink anchor UEs. In one embodiment, a wireless communication method performed by a user device (UE) comprises the steps of: acquiring a single reference node for one or more downlink reference signal time difference (DL-RSTD) measurements and one or more sidelink RSTD (SL-RSTD) measurements; determining one or more DL-RSTD measurements based on one or more reference signal resources transmitted by the single reference node and one or more first downlink positioning reference signal (DL-PRS) resources transmitted by one or more first transmit-receive points (TRPs); and determining one or more SL-RSTD measurements based on one or more reference signal resources transmitted by the single reference node and one or more first sidelink positioning reference signal (SL-PRS) resources transmitted by one or more first sidelink anchor UEs. In one embodiment, user equipment (UE) comprises one or more memories; one or more transceivers; and one or more processors telecomposed to one or more memories and one or more transceivers, and one or more processors alone or in combination acquire at least one reference node for one or more common downlink and sidelink reference signal time difference (RSTD) measurements and (1) one or more downlink RSTD (DL-RSTD) measurements, (2) one or more sidelink RSTD (SL-RSTD) measurements, or (3) both; and are configured to determine one or more common downlink and sidelink RSTD measurements based on one or more reference signal resources transmitted by said at least one reference node and (1) one or more first downlink positionin