US 11,962,520 B2
Phase noise handling in millimeter wave communications
Weidong Yang, San Diego, CA (US); Oghenekome Oteri, San Diego, CA (US); Haitong Sun, Cupertino, CA (US); Chunhai Yao, Beijing (CN); Yushu Zhang, Beijing (CN); Dawei Zhang, Saratoga, CA (US); Chunxuan Ye, San Diego, CA (US); Wei Zeng, Saratoga, CA (US); Hong He, San Jose, CA (US); Sigen Ye, Whitehouse Station, NJ (US); Jie Cui, San Jose, CA (US); and Yang Tang, San Jose, CA (US)
Assigned to Apple Inc., Cupertino, CA (US)
Appl. No. 17/593,735
Filed by Apple Inc., Cupertino, CA (US)
PCT Filed May 14, 2020, PCT No. PCT/CN2020/090289
§ 371(c)(1), (2) Date Sep. 23, 2021,
PCT Pub. No. WO2021/226944, PCT Pub. Date Nov. 18, 2021.
Prior Publication US 2023/0054308 A1, Feb. 23, 2023
Int. Cl. H04L 5/00 (2006.01)
CPC H04L 5/0007 (2013.01) [H04L 5/0048 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for noise compensation in a wireless system comprising:
obtaining a physical shared channel allocation, wherein the physical shared channel allocation comprises a number of physical resource blocks (PRBs) and one or more phase tracking reference signal (PTRS) frequency bands within the PRBs, wherein the one or more PTRS frequency bands comprise one or more PTRS signals;
receiving a signal based on the physical shared channel allocation;
filtering the received signal to extract the one or more PTRS frequency bands;
processing the one or more PTRS frequency bands to obtain one or more time domain PTRS signals;
estimating a phase noise for each PTRS frequency band of the one or more time domain PTRS signals; and
applying the phase noise estimates to the received signal to create a noise-compensated signal.