	US 12,267,880 B2
	Allocation of resources for preamble and payload of messages in a 2-step random access (RA) procedure in new radio (NR) systems
Anthony Lee, San Diego, CA (US); Seau S. Lim, Swindon (GB); Yongjun Kwak, Portland, OR (US); and Youn Hyoung Heo, Seoul (KR)
Assigned to Apple Inc., Cupertino, CA (US)
Filed by Apple Inc., Cupertino, CA (US)
Filed on Sep. 18, 2023, as Appl. No. 18/369,706.
Application 18/369,706 is a continuation of application No. 17/276,080, granted, now 11,825,525, previously published as PCT/US2019/053286, filed on Sep. 26, 2019.
Claims priority of provisional application 62/737,644, filed on Sep. 27, 2018.
Prior Publication US 2024/0008099 A1, Jan. 4, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H04W 72/0453 (2023.01); H04W 72/1263 (2023.01); H04W 74/00 (2009.01); H04W 74/08 (2009.01); H04W 74/0833 (2024.01); H04W 76/19 (2018.01)

CPC H04W 74/0841 (2013.01) [H04W 72/0453 (2013.01); H04W 72/1263 (2013.01); H04W 74/006 (2013.01); H04W 74/0866 (2013.01); H04W 76/19 (2018.02)]

20 Claims

1. An apparatus, comprising:

a processor configured to cause the apparatus to:

receive, from a base station, configuration information related to a 2-step random access (RA) procedure between the apparatus and the base station, wherein the configuration information indicates:

resources allocated for MsgA preamble transmissions, and

information related to a mapping between the resources allocated for the MsgA preamble transmissions and resources allocated for MsgA payload transmissions, wherein the resources allocated for Msg A payload transmissions include a plurality of frequency multiplexed resources;

determine a first resource for a MsgA preamble within resources allocated for the MsgA preamble transmissions;

determine a second resource for a MsgA payload based on the first resource for the MsgA preamble transmissions and the mapping; and

transmit, to the base station, the MsgA preamble in the first resource and the MsgA payload in the second resource.