US 11,683,770 B2
Synchronization channel and system acquisition for internet of things communications in a shared spectrum
Srinivas Yerramalli, Hyderabad (IN); Arumugam Chendamarai Kannan, San Diego, CA (US); Chih-Hao Liu, San Diego, CA (US); and Tamer Kadous, San Diego, CA (US)
Assigned to QUALCOMM Incorporated, San Diego, CA (US)
Filed by QUALCOMM Incorporated, San Diego, CA (US)
Filed on Jun. 2, 2021, as Appl. No. 17/337,346.
Application 17/337,346 is a division of application No. 15/989,698, filed on May 25, 2018, granted, now 11,051,263.
Claims priority of provisional application 62/520,386, filed on Jun. 15, 2017.
Prior Publication US 2021/0297972 A1, Sep. 23, 2021
Int. Cl. H04J 11/00 (2006.01); H04L 5/00 (2006.01); H04L 27/26 (2006.01); H04W 16/14 (2009.01); H04W 56/00 (2009.01); H04W 72/04 (2023.01); H04W 72/27 (2023.01); H04W 72/0453 (2023.01)
CPC H04W 56/0015 (2013.01) [H04J 11/0069 (2013.01); H04J 11/0073 (2013.01); H04J 11/0076 (2013.01); H04L 5/0048 (2013.01); H04L 27/2613 (2013.01); H04L 27/2614 (2013.01); H04W 16/14 (2013.01); H04J 2011/0096 (2013.01); H04W 72/0453 (2013.01); H04W 72/27 (2023.01)] 14 Claims
OG exemplary drawing
 
1. A method for wireless communication, comprising:
identifying a first synchronization sequence;
generating a second synchronization sequence by applying a first phase shift to the first synchronization sequence;
generating a third synchronization sequence by applying a second phase shift to the second synchronization sequence, the second phase shift being different from the first phase shift;
mapping the first synchronization sequence to a first resource block of a synchronization channel associated with a first frequency sub-band of a shared radio frequency spectrum band, the second synchronization sequence to a second resource block associated with a second frequency sub-band of the synchronization channel, and the third synchronization sequence to a third resource block of the synchronization channel; and
transmitting the first synchronization sequence and the second synchronization sequence concurrently over the synchronization channel using the first resource block and the second resource block according to the mapping.