US 11,750,346 B2
Signal structure for navigation and positioning signals
Guttorm Ringstad Opshaug, Redwood City, CA (US); Sven Fischer, Nuremberg (DE); Naga Bhushan, San Diego, CA (US); Stephen William Edge, Escondido, CA (US); Jie Wu, San Diego, CA (US); and Rayman Wai Pon, Cupertino, CA (US)
Assigned to QUALCOMM Incorporated, San Diego, CA (US)
Filed by QUALCOMM Incorporated, San Diego, CA (US)
Filed on Aug. 21, 2018, as Appl. No. 16/107,713.
Claims priority of provisional application 62/652,243, filed on Apr. 3, 2018.
Prior Publication US 2019/0305901 A1, Oct. 3, 2019
Int. Cl. H04L 5/00 (2006.01); H04W 64/00 (2009.01); H04W 72/04 (2023.01); G01S 5/10 (2006.01); H04W 72/0446 (2023.01); H04W 72/0453 (2023.01); H04W 72/23 (2023.01)
CPC H04L 5/005 (2013.01) [G01S 5/10 (2013.01); H04W 64/003 (2013.01); H04W 72/0446 (2013.01); H04W 72/0453 (2013.01); H04W 72/23 (2023.01)] 26 Claims
OG exemplary drawing
 
1. A method, on a base station, for providing position measurements signals in a wireless communication network, the method comprising:
determining, at the base station, a plurality of subcarriers for downlink transmission, wherein the plurality of subcarriers for downlink transmission comprise all subcarriers indicated in a resource block of a scheduled time of transmission within a scheduled transmission occasion, wherein the plurality of subcarriers is mapped to a plurality of symbol periods of a radio subframe based on a pattern in which:
each subcarrier of the plurality of subcarriers is mapped to multiple symbol periods,
the number of multiple symbol periods is the same for every subcarrier,
fewer than all of the plurality of subcarriers are mapped to each individual symbol period,
the subcarriers mapped to any individual symbol period are uniformly spaced apart in frequency, and
the subcarriers that are mapped vary across different symbol periods, and
wherein, in the pattern:
(i) each subcarrier is mapped to at least three symbol periods of the plurality of symbol periods, or
(ii) each symbol period of the plurality of symbol periods has at least three subcarriers of the plurality of subcarriers mapped to it, the at least three subcarriers being uniformly spaced apart in frequency, or
both (i) and (ii); and
transmitting, from the base station, at the scheduled time of transmission, and using each subcarrier of the plurality of subcarriers, a wireless position measurement signal at the scheduled transmission occasion, the wireless position measurement signal being part of a sequence of wireless signals representing a position measurement signal bitstream,
wherein the wireless position measurement signal comprises a plurality of symbols transmitted in the plurality of symbol periods and according to the pattern; and
wherein a timing of the scheduled transmission occasion of the wireless position measurement signal is such that it enables position measurements to be taken based on the timing.