US 12,075,372 B2
Synchronizing wireless communications between electronic devices
Zhu Ji, Cupertino, CA (US); Jianxiong Shi, Cupertino, CA (US); and Miao Yao, Cupertino, CA (US)
Assigned to Apple Inc., Cupertino, CA (US)
Filed by Apple Inc., Cupertino, CA (US)
Filed on Jul. 23, 2021, as Appl. No. 17/384,617.
Prior Publication US 2023/0043319 A1, Feb. 9, 2023
Int. Cl. H04W 56/00 (2009.01); H04J 13/00 (2011.01); H04L 27/26 (2006.01)
CPC H04W 56/001 (2013.01) [H04J 13/0062 (2013.01); H04L 27/2607 (2013.01); H04L 27/2634 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method comprising:
determining, using a first device, a first Zadoff-Chu sequence having a first root value;
determining, using the first device, a second Zadoff-Chu sequence having a second root value, wherein the second root value is an inverse modulus of the first root value;
generating, using the first device, a wireless signal comprising:
a first preamble generated based, at least in part, on the first Zadoff-Chu sequence,
a second preamble generated based, at least in part, on the second Zadoff-Chu sequence, and
a payload; and
transmitting the wireless signal from the first device to a second device.