US 12,259,485 B2
User equipment signaling to support bias detection
Lorenzo Ferrari, Castro Valley, CA (US); and Alexandros Dinh Manolakos, Escondido, CA (US)
Assigned to QUALCOMM Incorporated, San Diego, CA (US)
Appl. No. 17/757,690
Filed by QUALCOMM Incorporated, San Diego, CA (US)
PCT Filed Nov. 24, 2020, PCT No. PCT/US2020/062064
§ 371(c)(1), (2) Date Jun. 17, 2022,
PCT Pub. No. WO2021/154376, PCT Pub. Date Aug. 5, 2021.
Claims priority of application No. 20200100052 (GR), filed on Jan. 31, 2020.
Prior Publication US 2023/0035463 A1, Feb. 2, 2023
Int. Cl. G01S 5/02 (2010.01); G01S 5/00 (2006.01); H04W 64/00 (2009.01)
CPC G01S 5/0244 (2020.05) [G01S 5/0072 (2013.01); G01S 5/0236 (2013.01); H04W 64/003 (2013.01)] 28 Claims
OG exemplary drawing
 
1. A method of wireless communication performed by a first network node, comprising:
receiving one or more positioning reference signals from a second network node involved in a positioning session with the first network node;
detecting whether there is a positioning bias event associated with the second network node based on one or more parameters related to the one or more positioning reference signals, the positioning bias event affecting an accuracy of a location estimate of a user equipment (UE), wherein the one or more parameters include one or more parameters indicating that the second network node is out of synchronization with other transmission-reception points (TRPs) involved in the positioning session, one or more parameters indicating a timing bias associated with a TRP identifier (ID), positioning reference signal (PRS) ID, frequency layer ID level, or any combination thereof, due to calibration errors in the second network node, one or more parameters indicating an inaccurate location of the second network node, one or more parameters indicating a phase difference, power difference, or both in the one or more positioning reference signals from the second network node, one or more parameters indicating a failure of a polarization verification to detect non-line of sight (NLOS) paths between the UE and the second network node, or any combination thereof; and
in response to the detection that there is a positioning bias event, transmitting a report of the positioning bias event to a third network node.