US 11,743,079 B2
Uplink operation for LTE in an unlicensed band
Janet A. Stern-Berkowitz, Little Neck, NY (US); Pouriya Sadeghi, San Diego, CA (US); J. Patrick Tooher, Montreal (CA); Samian Kaur, Plymouth Meeting, PA (US); Marian Rudolf, Montreal (CA); and Pascal M. Adjakple, Great Neck, NY (US)
Assigned to INTERDIGITAL PATENT HOLDINGS, INC., Wilmington, DE (US)
Filed by INTERDIGITAL PATENT HOLDINGS, INC., Wilmington, DE (US)
Filed on Jul. 27, 2022, as Appl. No. 17/875,064.
Application 17/875,064 is a continuation of application No. 16/785,309, filed on Feb. 7, 2020, granted, now 11,405,246.
Application 16/785,309 is a continuation of application No. 16/183,277, filed on Nov. 7, 2018, granted, now 11,502,882.
Application 16/183,277 is a continuation of application No. 15/543,794, granted, now 10,171,276, issued on Jan. 1, 2019, previously published as PCT/US2016/015464, filed on Jan. 28, 2016.
Claims priority of provisional application 62/204,135, filed on Aug. 12, 2015.
Claims priority of provisional application 62/160,924, filed on May 13, 2015.
Claims priority of provisional application 62/108,934, filed on Jan. 28, 2015.
Prior Publication US 2022/0368574 A1, Nov. 17, 2022
Int. Cl. H04W 16/14 (2009.01); H04W 72/12 (2023.01); H04L 5/00 (2006.01); H04L 27/00 (2006.01); H04W 72/1268 (2023.01); H04W 74/08 (2009.01)
CPC H04L 27/0006 (2013.01) [H04L 5/0048 (2013.01); H04W 16/14 (2013.01); H04W 72/1215 (2013.01); H04W 72/1268 (2013.01); H04W 74/085 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A wireless transmit/receive unit (WTRU) comprising:
a processor configured to:
detect a listen before talk (LBT) failure, wherein the LBT failure is associated with a first cell;
determine that a number of LBT failures associated with the first cell has reached a threshold value based on the detected LBT failure; and
based on the determination that the number of LBT failures associated with the first cell has reached the threshold value, send a notification to a base station using a second cell, wherein the notification indicates that the threshold value has been reached.