US 12,335,747 B2
Polarization signaling in line-of-sight path detection
Danlu Zhang, Rancho Santa Fe, CA (US); Sony Akkarakaran, Poway, CA (US); Amichai Sanderovich, Atlit (IL); and Bala Ramasamy, San Marcos, CA (US)
Assigned to QUALCOMM Incorporated, San Diego, CA (US)
Filed by QUALCOMM Incorporated, San Diego, CA (US)
Filed on Aug. 30, 2021, as Appl. No. 17/460,604.
Prior Publication US 2023/0066605 A1, Mar. 2, 2023
Int. Cl. H04W 16/24 (2009.01); G01S 3/72 (2006.01)
CPC H04W 16/24 (2013.01) 13 Claims
OG exemplary drawing
 
1. A method of determining a line-of-sight (LOS) condition performed by a first network node, comprising:
receiving, from a second network node, one or more reference signals transmitted using one or more first polarizations including one or more time-varying polarization patterns known to the first network node and a designated time over which the reference signals transmitted using the one or more first polarizations are transmitted, wherein the one or more reference signals are received having one or more second polarizations; and
determining whether the one or more reference signals followed a LOS path between the first network node and the second network node based on a comparison of signal characteristics related to the one or more first polarizations, and signal characteristics related to the one or more second polarizations, wherein the signal characteristics related to the one or more second polarizations includes a first received signal energy of the one or more reference signals along a first axis of polarization and a second received signal energy of the one or more reference signals along a second axis of polarization, wherein the first received energy and the second received energy are determined based on a time period longer than the designated period.