US 10,368,372 B2
Listen-before-talk techniques for uplink transmissions
Arumugam Chendamarai Kannan, San Diego, CA (US); Tao Luo, San Diego, CA (US); Chirag Patel, San Diego, CA (US); Srinivas Yerramalli, 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 Jan. 11, 2017, as Appl. No. 15/404,171.
Claims priority of provisional application 62/277,860, filed on Jan. 12, 2016.
Claims priority of provisional application 62/318,727, filed on Apr. 5, 2016.
Claims priority of provisional application 62/323,777, filed on Apr. 17, 2016.
Prior Publication US 2017/0202022 A1, Jul. 13, 2017
Int. Cl. H04L 1/18 (2006.01); H04W 74/08 (2009.01); H04W 72/04 (2009.01); H04W 72/14 (2009.01); H04W 74/00 (2009.01)
CPC H04W 74/0816 (2013.01) [H04W 72/0446 (2013.01); H04W 72/14 (2013.01); H04W 74/006 (2013.01); H04W 74/0808 (2013.01)] 26 Claims
OG exemplary drawing
 
1. A method for wireless communication, comprising:
receiving an uplink grant identifying uplink resources for an uplink transmission;
identifying, after receiving the uplink grant, a time difference between receiving the uplink grant and the uplink resources for the uplink transmission;
identifying a listen-before-talk (LBT) scheme for initiating the uplink transmission based at least in part on information received in the uplink grant and the identified time difference between receiving the uplink grant and the uplink resources for the uplink transmission, the LBT scheme comprising a first duration LBT procedure or a second duration LBT procedure that is longer than the first duration LBT procedure; and
performing the first duration LBT procedure or the second duration LBT procedure based at least in part on the identified LBT scheme and the identified time difference.