US 11,871,371 B2
Method and apparatus for maintaining uplink synchronization and reducing battery power consumption
Jin Wang, Princeton, NJ (US); John S. Chen, Ann Arbor Township, MI (US); Mohammed Sammour, Alrabieh-Amman (JO); Stephen E. Terry, Northport, NY (US); Arty Chandra, Roslyn, NY (US); and Guodong Zhang, Woodbury, NY (US)
Assigned to InterDigital Technology Corporation, Wilmington, DE (US)
Filed by InterDigital Technology Corporation, Wilmington, DE (US)
Filed on Nov. 21, 2022, as Appl. No. 17/991,220.
Application 17/991,220 is a continuation of application No. 16/935,035, filed on Jul. 21, 2020, granted, now 11,711,777.
Application 16/935,035 is a continuation of application No. 16/530,178, filed on Aug. 2, 2019, granted, now 10,764,857, issued on Sep. 1, 2020.
Application 16/530,178 is a continuation of application No. 15/846,131, filed on Dec. 18, 2017, granted, now 10,433,271, issued on Oct. 1, 2019.
Application 15/846,131 is a continuation of application No. 14/848,507, filed on Sep. 9, 2015, granted, now 9,900,857, issued on Feb. 20, 2018.
Application 14/848,507 is a continuation of application No. 11/689,771, filed on Mar. 22, 2007, granted, now 9,167,546, issued on Oct. 20, 2015.
Claims priority of provisional application 60/785,491, filed on Mar. 24, 2006.
Prior Publication US 2023/0080389 A1, Mar. 16, 2023
Int. Cl. H04W 56/00 (2009.01); H04W 52/02 (2009.01); H04J 11/00 (2006.01); H04W 72/21 (2023.01); H04W 92/10 (2009.01)
CPC H04W 56/0045 (2013.01) [H04J 11/0069 (2013.01); H04W 52/0216 (2013.01); H04W 72/21 (2023.01); H04W 92/10 (2013.01); Y02D 30/70 (2020.08)] 20 Claims
OG exemplary drawing
 
1. A method implemented by a wireless/transmit receive unit (WTRU), the method comprising:
receiving information indicating a time and a resource for performing random access;
transmitting a random-access channel (RACH) preamble and a payload in accordance with the received information;
receiving a response after transmission of the RACH preamble and the payload, the response comprising a timing adjustment command.