公开(公告)号：US12216222B2

公开(公告)日：2025-02-04

申请号：US17796187

申请日：2021-01-29

Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

Inventor： Loran Jatunov ,  Hussain Elkotby ,  Tanbir Haque ,  Patrick Cabrol ,  Ravikumar Pragada

IPC: G01S5/02 ,  G01S11/02 ,  G01S13/84 ,  H04W64/00

Abstract: A method for use in a wireless transmit/receive unit (WTRU) configured to communicate through a zero energy (ZE) interface in accordance with an embodiment disclosed herein is provided. The method includes the WTRU receiving, a first positioning reference signal (PRS) resource with parameters characterizing the first PRS and determining the suitability of the first PRS resource for use by the WTRU. The method also includes measuring the phase difference of arrival (PDOA) for available frequency pairs and generating a range estimate based on the PDOA measurement. Further, the method includes the WTRU evaluating a reliability of the PDOA measurement and an accuracy of the range estimate and, on a condition that a sufficient accuracy has been achieved, reporting the range estimate.