Search

CN-116250187-B - Mobility-based beam configuration for positioning reference signals

CN116250187BCN 116250187 BCN116250187 BCN 116250187BCN-116250187-B

Abstract

Example embodiments of the present disclosure relate to apparatuses, methods, devices, and computer-readable storage media for mobility-based beam configuration of Positioning Reference Signals (PRSs). In an example embodiment, a first device determines a mobility state of the first device from a plurality of mobility states and selects a beam configuration from a plurality of beam configurations for transmission of a positioning reference signal based at least in part on the determined mobility state. Further, the first device transmits PRSs to the second device using the selected beam configuration. The power consumption and the processing complexity of the positioning device are reduced.

Inventors

  • LIU JIANGUO
  • TAO TAO
  • MENG YAN

Assignees

  • 上海诺基亚贝尔股份有限公司
  • 诺基亚通信公司

Dates

Publication Date
20260505
Application Date
20210209

Claims (16)

  1. 1. A method implemented at a first device, comprising: determining a mobility state of the first device from a plurality of mobility states; Selecting a beam configuration for transmission of a positioning reference signal from a plurality of beam configurations based at least in part on the determined mobility state, wherein the plurality of beam configurations includes at least a first beam configuration and a second beam configuration, the first beam configuration including a beam configuration configured based on a spatial relationship of resources for the positioning reference signal, and the second beam configuration including at least one of a configuration of an omni-directional beam or a configuration of a plurality of narrow beams for beam scanning; transmitting the positioning reference signal to a second device using the selected beam configuration, and The first device refreshes the validity state of the plurality of beam configurations, activates the narrow beam configuration by the first device to transmit a positioning reference signal when the first device is in a quasi-static state if the narrow beam configuration is updated, activates the wide beam configuration by the first device to transmit a positioning reference signal when the first device is in a mobile state or when the first beam configuration is inactive in a quasi-static state if the wide beam configuration is updated, wherein the narrow beam is included in the first beam and the wide beam is included in the second beam.
  2. 2. The method of claim 1, further comprising: an indication of at least one of the plurality of beam configurations is received from a third device.
  3. 3. The method of claim 1 or 2, wherein at least one of the plurality of beam configurations is predefined.
  4. 4. The method of claim 1, wherein selecting the beam configuration comprises: The first beam configuration is selected if the mobility state of the first device is determined to be a quasi-static state.
  5. 5. The method of claim 4, further comprising: In response to a transition from the quasi-static state to a mobile state, the second beam configuration is selected for subsequent transmission of the positioning reference signal.
  6. 6. The method of claim 1, wherein selecting the beam configuration comprises: The second beam configuration is selected if the mobility state of the first device is determined to be a mobile state.
  7. 7. The method of claim 6, further comprising: determining the validity of the first beam configuration if it is determined that the first device is stopped moving, and If the first beam configuration is determined to be valid, the first beam configuration is selected for subsequent transmission of the positioning reference signal.
  8. 8. The method of claim 7, further comprising: if the first beam configuration is determined to be invalid, continuing to use the second beam configuration for the subsequent transmission of the positioning reference signal.
  9. 9. The method of any one of claims 1 to 8, further comprising: An indication of at least one transition between a plurality of mobility states of the first device is sent to a third device.
  10. 10. The method according to any one of claims 1 to 9, wherein Determining the mobility state of the first device includes: Determining the mobility state of the first device in response to receiving an indication of an update for at least one beam configuration from a third device, and Transmitting the positioning reference signal using the selected beam configuration includes: updating the selected beam configuration based on the received indication if it is determined that the update is associated with the selected beam configuration, and The location reference signal is transmitted to the second device using the updated beam configuration.
  11. 11. The method of any of claims 1-10, wherein determining the mobility state of the first device comprises determining the mobility state of the first device by at least one of: Comparing the movement speed of the first device with a threshold speed; Comparing the distance of movement of the first device with a threshold distance, or The received signal strength of the downlink reference signal from the second device is compared to a threshold signal strength.
  12. 12. The method of claim 11, wherein the downlink reference signal is indicated by a beam configuration of the plurality of beam configurations.
  13. 13. The method of any of claims 1-12, wherein the positioning reference signals comprise at least one of sounding reference signals, demodulation reference signals, random access channel preambles, or dedicated reference signals for positioning.
  14. 14. An apparatus for communication, comprising: at least one processor, and At least one memory including computer program code; The at least one memory and the computer program code are configured to, with the at least one processor, cause the first device to perform the method of any one of claims 1 to 13.
  15. 15. An apparatus for communication comprising means for performing the method of any one of claims 1 to 13.
  16. 16. A computer readable storage medium comprising program instructions stored thereon, which when executed by a processor of a device, cause the device to perform the method of any of claims 1 to 13.

Description

Mobility-based beam configuration for positioning reference signals Technical Field Example embodiments of the present disclosure relate generally to the field of communications and, in particular, relate to an apparatus, method, device, and computer-readable storage medium for mobility-based beam configuration of Positioning Reference Signals (PRS). Background In release 16 (Rel-16), new Radio (NR) positioning techniques are based on downlink time difference of arrival (DL-TDOA), uplink time difference of arrival (UL-TDOA), downlink departure angle (DL-AoD), uplink angle of arrival (UL-AoA), and Multi-cell round trip time (Multi-RTT). In addition, new Sounding Reference Signals (SRS) for uplink positioning are introduced. Radio Access Technology (RAT) -related positioning in Rel-16 is for User Equipment (UE) in RRC connected mode. Positioning will be enhanced in Rel-17 to support positioning of UEs in RRC inactive state. However, if the UE is configured with a narrow beam, the spatial relationship configuration may be ineffective for positioning when the UE moves. Disclosure of Invention In general, example embodiments of the present disclosure provide apparatus, methods, devices, and computer-readable storage media for mobility-based beam configuration of Positioning Reference Signals (PRSs). In a first aspect, a first device is provided that includes at least one processor and at least one memory including computer program code. The at least one memory and the computer program code are configured to, with the at least one processor, cause the first device to determine a mobility state of the first device from a plurality of mobility states and select a beam configuration from a plurality of beam configurations for transmission of the positioning reference signal based at least in part on the determined mobility state. The first device is also caused to transmit a positioning reference signal to the second device using the selected beam configuration. In a second aspect, a second device is provided that includes at least one processor and at least one memory including computer program code. The at least one memory and the computer program code are configured to, with the at least one processor, cause the second device to derive at least two of the plurality of beam configurations for the first device to transmit the positioning reference signal. The second device is further caused to receive a positioning reference signal from the first device based at least in part on a beam configuration of the plurality of beam configurations. In a third aspect, a third device is provided that includes at least one processor and at least one memory including computer program code. The at least one memory and the computer program code are configured to, with the at least one processor, cause the third device to determine at least two of the plurality of beam configurations for the first device to transmit the positioning reference signal. The third device is further caused to transmit an indication of at least two of the plurality of beam configurations to the first device. In a fourth aspect, a method at a first device is provided. In the method, a first device determines a mobility state of the first device from a plurality of mobility states and selects a beam configuration from a plurality of beam configurations for transmission of a positioning reference signal based at least in part on the determined mobility state. In addition, the first device transmits a positioning reference signal to the second device using the selected beam configuration. In a fifth aspect, a method at a second device is provided. In the method, the second device derives at least two of the plurality of beam configurations for the first device to transmit the positioning reference signal. The second device then receives a positioning reference signal from the first device based at least in part on a beam configuration of the plurality of beam configurations. In a sixth aspect, a method at a third device is provided. In the method, a third device determines at least two of a plurality of beam configurations for a first device to transmit a positioning reference signal. The third device sends an indication of at least two of the plurality of beam configurations to the first device. In a seventh aspect, there is provided an apparatus comprising means for performing the method according to the fourth, fifth or sixth aspect. In a seventh aspect, a computer readable storage medium is provided, the computer readable storage medium including program instructions stored thereon. The instructions, when executed by a processor of a device, cause the device to perform the method according to the fourth, fifth or sixth aspect. It should be understood that the summary is not intended to identify key or essential features of the example embodiments of the disclosure, nor is it intended to be used to limit the scope of the disclosure. Other features of the