US 12,273,921 B2
Method and apparatus for performing random access
Dong Hyun Park, Seoul (KR)
Assigned to CISCO TECHNOLOGY, INC., San Jose, CA (US)
Filed by Cisco Technology, Inc., San Jose, CA (US)
Filed on Apr. 5, 2023, as Appl. No. 18/131,148.
Application 18/131,148 is a continuation of application No. 16/952,766, filed on Nov. 19, 2020, granted, now 11,647,541.
Application 16/952,766 is a continuation of application No. 16/273,589, filed on Feb. 12, 2019, granted, now 10,880,925, issued on Dec. 29, 2020.
Claims priority of application No. 10-2018-0018724 (KR), filed on Feb. 14, 2018.
Prior Publication US 2023/0262767 A1, Aug. 17, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H04W 74/0816 (2024.01); H04L 5/00 (2006.01); H04W 72/23 (2023.01); H04W 76/11 (2018.01)
CPC H04W 74/0816 (2013.01) [H04L 5/005 (2013.01); H04W 72/23 (2023.01); H04W 76/11 (2018.02)] 23 Claims
OG exemplary drawing
 
1. One or more non-transitory computer readable storage media encoded with instructions that, when executed by a processor, cause the processor to perform operations, comprising:
receiving, by a wireless device from a base station, one or more messages comprising downlink control information (DCI) associated with a DCI format;
determining that a field of the DCI corresponds to a predefined value;
determining, based on the field corresponding to the predefined value, the DCI is for random access associated with a physical downlink control channel (PDCCH) order, wherein a plurality of fields of the DCI comprise:
a synchronization signal/physical broadcasting channel (SS/PBCH) index field having a value indicating a SS/PBCH; and
a physical random access channel (PRACH) resource index field having a value indicating one or more random access channel (RACH) occasions; and
determining, based on the value of the SS/PBCH index field and the value of the PRACH resource index field, at least one RACH occasion, of the one or more RACH occasions, associated with the SS/PBCH; and
transmitting, based on the at least one RACH occasion associated with the SS/PBCH, a random access preamble.