US 12,335,080 B2
Phase tracking reference signal (PT-RS) configuration
Alexei Vladimirovich Davydov, Nizhny Novgorod (RU); Guotong Wang, Beijing (CN); Gang Xiong, Beaverton, OR (US); and Yushu Zhang, Beijing (CN)
Assigned to Apple Inc., Cupertino, CA (US)
Filed by Apple Inc., Cupertino, CA (US)
Filed on Mar. 31, 2023, as Appl. No. 18/129,263.
Application 18/129,263 is a continuation of application No. 16/645,360, granted, now 11,641,299, previously published as PCT/US2018/049745, filed on Sep. 6, 2018.
Claims priority of provisional application 62/587,910, filed on Nov. 17, 2017.
Claims priority of application No. PCT/CN2017/100926 (WO), filed on Sep. 7, 2017; and application No. PCT/CN2017/111058 (WO), filed on Nov. 15, 2017.
Prior Publication US 2023/0239188 A1, Jul. 27, 2023
Int. Cl. H04L 27/26 (2006.01); H04L 1/00 (2006.01); H04L 1/1812 (2023.01); H04L 5/00 (2006.01); H04W 72/23 (2023.01)
CPC H04L 27/2613 (2013.01) [H04L 1/0003 (2013.01); H04L 1/1819 (2013.01); H04L 5/0044 (2013.01); H04L 5/0048 (2013.01); H04L 5/0064 (2013.01); H04L 27/2675 (2013.01); H04W 72/23 (2023.01); H04L 5/0007 (2013.01); H04L 27/26134 (2021.01); H04L 27/2636 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method, comprising:
by a user equipment (UE):
determining one or more phase tracking reference signal (PT-RS) time domain positions based on a modulation and coding scheme (MCS) index and one or more positions of one or more demodulation reference signal (DM-RS) symbols, wherein the one or more DMRS symbols comprise at least one front-loaded DM-RS symbol; and
generating at least one PT-RS using one or more of orthogonal frequency division multiplex (OFDM) symbols based on the determined one or more PT-RS time domain positions, wherein the at least one PT-RS occurs a first number of symbols subsequent to the at least one front-loaded DM-RS symbol, and wherein the first number of symbols is based on a PT-RS time domain density.