US 12,490,260 B2
Retransmission of MsgB in two-step random access procedure
Chunhai Yao, Beijing (CN); Clive E. Rodgers, Palo Alto, CA (US); Dawei Zhang, Saratoga, CA (US); Fangli Xu, Beijing (CN); Haijing Hu, Los Gatos, CA (US); Haitong Sun, Saratoga, CA (US); Wei Zeng, Saratoga, CA (US); Yuqin Chen, Shenzhen (CN); Yushu Zhang, Beijing (CN); and Zhibin Wu, Los Altos, CA (US)
Assigned to Apple Inc., Cupertino, CA (US)
Filed by Apple Inc., Cupertino, CA (US)
Filed on May 1, 2024, as Appl. No. 18/652,003.
Application 18/652,003 is a continuation of application No. 18/334,933, filed on Jun. 14, 2023, granted, now 12,010,730.
Application 18/334,933 is a continuation of application No. 17/040,437, granted, now 11,723,073, issued on Aug. 8, 2023, previously published as PCT/CN2019/108881, filed on Sep. 29, 2019.
Prior Publication US 2024/0284518 A1, Aug. 22, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H04W 72/1268 (2023.01); H04W 74/00 (2009.01); H04W 74/0833 (2024.01); H04W 74/0836 (2024.01)
CPC H04W 72/1268 (2013.01) [H04W 74/006 (2013.01); H04W 74/0836 (2024.01); H04W 74/0833 (2013.01)] 20 Claims
OG exemplary drawing
 
9. An apparatus, comprising:
a processor configured to, when executing instructions stored in a memory, perform operations comprising:
receiving a configuration message from a base station, wherein the configuration message indicates a time duration of a window for monitoring for a random access response (RAR) message;
monitoring for one or more transmissions of the RAR message, wherein the one or more transmissions of the RAR message are part of a two-step random access procedure;
receiving downlink control information (DCI) in a first of the one or more transmissions of the RAR message within the window using a message B (MSGB) Radio Network Temporary Identity (RNTI), wherein the MSGB-RNTI is associated with location parameters of a physical uplink resource that was used to transmit a random access preamble of the two-step random access procedure; and
determining, based at least in part on a field in the DCI indicating a sub-window number, that the DCI is intended for the UE that transmitted the random access preamble and to decode the one or more transmissions.