US 12,035,370 B2
Method and apparatus for random access in multicarrier wireless communications
Ghyslain Pelletier, Montreal (CA); Stephen E. Terry, Northport, NY (US); Paul Marinier, Brossard (CA); Guodong Zhang, Syosset, NY (US); Peter S. Wang, E. Setauket, NY (US); Jin Wang, Princeton, NJ (US); Shankar Somasundaram, Sunnyvale, CA (US); Jean-Louis Gauvreau, La Prairie (CA); Charles A. Dennean, Melville, NY (US); Erdem Bala, East Meadow, NY (US); and Afshin Haghighat, Ile-Bizard (CA)
Assigned to InterDigital Patent Holdings, Inc., Wilmington, DE (US)
Filed by INTERDIGITAL PATENT HOLDINGS, INC., Wilmington, DE (US)
Filed on Aug. 2, 2021, as Appl. No. 17/391,782.
Application 17/391,782 is a continuation of application No. 15/667,998, filed on Aug. 3, 2017, granted, now 11,083,020.
Application 15/667,998 is a continuation of application No. 14/980,566, filed on Dec. 28, 2015, granted, now 9,750,053, issued on Aug. 29, 2017.
Application 14/980,566 is a continuation of application No. 14/296,773, filed on Jun. 5, 2014, granted, now 9,253,802, issued on Feb. 2, 2016.
Application 14/296,773 is a continuation of application No. 12/766,677, filed on Apr. 23, 2010, granted, now 8,767,585, issued on Jul. 1, 2014.
Claims priority of provisional application 61/320,405, filed on Apr. 2, 2010.
Claims priority of provisional application 61/303,937, filed on Feb. 12, 2010.
Claims priority of provisional application 61/293,366, filed on Jan. 8, 2010.
Claims priority of provisional application 61/181,811, filed on May 28, 2009.
Prior Publication US 2021/0368548 A1, Nov. 25, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. H04W 72/0453 (2023.01); H04L 5/00 (2006.01); H04W 72/23 (2023.01); H04W 74/00 (2009.01); H04W 74/0833 (2024.01); H04L 27/26 (2006.01); H04W 74/08 (2009.01)
CPC H04W 74/0833 (2013.01) [H04L 5/0048 (2013.01); H04W 72/23 (2023.01); H04W 74/002 (2013.01); H04W 74/004 (2013.01); H04L 27/2613 (2013.01); H04W 74/0866 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A base station comprising:
a receiver and a transmitter;
the transmitter configured to:
transmit an indication of a threshold value associated with path loss; and
transmit random access channel (RACH) configuration information including an indication of one or more frequency resources; and
the receiver configured to receive a random access preamble in a physical random access channel (PRACH) transmission that uses at least a portion of the one or more frequency resources of a selected uplink carrier of a plurality of uplink carriers, wherein, on a first condition that a measurement result is below the threshold value, a first uplink carrier of the plurality of uplink carriers is the selected uplink carrier, and on a second condition that the measurement result is not below the threshold value, a second uplink carrier of the plurality of uplink carriers is the selected uplink carrier;
wherein a random access radio network temporary identifier (RA-RNTI) is associated with the PRACH transmission, and wherein the RA-RNTI is a function of: a carrier ID of the selected uplink carrier, a time index associated with the PRACH transmission, and an index of the at least a portion of the one or more frequency resources.