US 12,069,736 B2
Supporting random access and paging procedures for reduced capability WTRUs in an LTE system
Janet A. Stern-Berkowitz, Little Neck, NY (US); Moon-il Lee, Melville, NY (US); and Pouriya Sadeghi, San Diego, CA (US)
Assigned to InterDigital Patent Holdings, Inc., Wilmington, DE (US)
Filed by InterDigital Patent Holdings, Inc., Wilmington, DE (US)
Filed on Mar. 28, 2023, as Appl. No. 18/127,315.
Application 18/127,315 is a continuation of application No. 16/874,612, filed on May 14, 2020, granted, now 11,647,545.
Application 16/874,612 is a continuation of application No. 16/379,698, filed on Apr. 9, 2019, granted, now 10,674,544, issued on Jun. 2, 2020.
Application 16/379,698 is a continuation of application No. 15/504,218, granted, now 10,306,680, issued on May 28, 2019, previously published as PCT/US2015/045382, filed on Aug. 14, 2015.
Claims priority of provisional application 62/204,341, filed on Aug. 12, 2015.
Claims priority of provisional application 62/161,212, filed on May 13, 2015.
Claims priority of provisional application 62/149,053, filed on Apr. 17, 2015.
Claims priority of provisional application 62/075,555, filed on Nov. 5, 2014.
Claims priority of provisional application 62/038,194, filed on Aug. 15, 2014.
Prior Publication US 2023/0262779 A1, Aug. 17, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H04W 74/08 (2024.01); H04L 1/1829 (2023.01); H04L 5/00 (2006.01); H04W 74/00 (2009.01); H04W 74/0833 (2024.01)
CPC H04W 74/0833 (2013.01) [H04L 1/1854 (2013.01); H04L 5/0053 (2013.01); H04L 5/0092 (2013.01); H04W 74/004 (2013.01); H04W 74/006 (2013.01); H04W 74/008 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method implemented by a wireless transmit/receive unit (WTRU), the method comprising:
receiving a physical downlink control channel (PDCCH) message, wherein the PDCCH message indicates that the WTRU is to initiate a random access procedure, and wherein the PDCCH message further indicates a coverage enhancement (CE) level associated with the random access procedure;
transmitting, based on the received PDCCH message, a preamble using a physical random access channel (PRACH) resource;
repeating transmission of the preamble, wherein a number of repetitions is based on the CE level indicated by the PDCCH message; and
receiving a random access response (RAR) within a response time window, wherein at least one parameter of the response time window is determined based on the CE level indicated by the PDCCH message.