US 12,108,448 B2
SS block methods and procedures for NR-U
Kyle Jung-Lin Pan, Saint James, NY (US); Nirav B. Shah, San Diego, CA (US); Fengjun Xi, San Diego, CA (US); and Chunxuan Ye, San Diego, CA (US)
Assigned to INTERDIGITAL PATENT HOLDINGS, INC., Wilmington, DE (US)
Filed by INTERDIGITAL PATENT HOLDINGS, INC., Wilmington, DE (US)
Filed on Oct. 21, 2021, as Appl. No. 17/507,181.
Application 17/507,181 is a continuation of application No. 16/534,550, filed on Aug. 7, 2019, abandoned.
Claims priority of provisional application 62/736,908, filed on Sep. 26, 2018.
Claims priority of provisional application 62/715,967, filed on Aug. 8, 2018.
Prior Publication US 2022/0116998 A1, Apr. 14, 2022
Int. Cl. H04W 74/0816 (2024.01); H04J 11/00 (2006.01); H04W 56/00 (2009.01); H04W 72/30 (2023.01)
CPC H04W 74/0816 (2013.01) [H04J 11/0069 (2013.01); H04W 56/0045 (2013.01); H04W 72/30 (2023.01)] 14 Claims
OG exemplary drawing
 
1. A wireless transmit/receive unit (WTRU) comprising:
a receiver configured to receive a Synchronization Signal/Physical Broadcast Channel (SS/PBCH) block transmission, comprising a plurality of SS/PBCH blocks, wherein each of the plurality of SS/PBCH blocks has a block index;
a transceiver; and
a processor
wherein the transceiver and processor are configured to:
detect a first SS/PBCH block index;
determine a frame timing based on the first SS/PBCH block index;
determine a second SS/PBCH block index from the detected first SS/PBCH block index; and
perform an initial access to a cell based on the second SS/PBCH block index;
wherein the second SS/PBCH block index is the first SS/PBCH block index modulo N, wherein N is based on a transmission occasion in which a network acquired access to an unlicensed spectrum;
wherein N is signaled in a PBCH associated with the detected first SS/PBCH block index and indicates the number of SS/PBCH blocks cyclically shifted;
wherein the SS/PBCH blocks are cyclically shifted due to a failure of one or more listen before talk procedures.