US 12,225,596 B2
Method of performing random access (RA) procedure, and transmitting device, apparatus and storage medium therefor, and method and apparatus for transmitting mac PDU of RA procedure
Eunjong Lee, Seoul (KR); Heejeong Cho, Seoul (KR); Seungjune Yi, Seoul (KR); and Jeonggu Lee, Seoul (KR)
Assigned to LG ELECTRONICS INC., Seoul (KR)
Filed by LG ELECTRONICS INC., Seoul (KR)
Filed on Dec. 11, 2023, as Appl. No. 18/535,172.
Application 18/535,172 is a continuation of application No. 17/594,483, granted, now 11,924,891, previously published as PCT/KR2020/006710, filed on May 22, 2020.
Claims priority of application No. 10-2019-0060422 (KR), filed on May 23, 2019; and application No. 10-2019-0060426 (KR), filed on May 23, 2019.
Prior Publication US 2024/0114560 A1, Apr. 4, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H04W 74/0833 (2024.01); H04W 74/00 (2009.01); H04W 80/02 (2009.01)
CPC H04W 74/085 (2013.01) [H04W 74/004 (2013.01); H04W 80/02 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A method for performing operations for a user equipment (UE) in a wireless communication system, the method comprising:
transmitting a random access preamble (RAP) and a common control channel (CCCH) service data unit (SDU) for a two-step random access (RA) procedure;
receiving a medium access control (MAC) protocol data unit (PDU); and
based on the MAC PDU including a success random access response (RAR) related to a contention resolution identity (CRID) which matches the CCCH SDU, demultiplexing the MAC PDU,
wherein a MAC SDU indicator associated with the success RAR indicates whether a MAC SDU for the CCCH is present or absent in the MAC PDU,
wherein a MAC subheader included in the MAC PDU comprises a T1 field indicating whether the MAC subheader includes a RAP identity (RAP ID),
wherein, based on the T1 field not indicating that the MAC subheader includes the RAP ID, the MAC subheader further comprises a T2 field indicating whether the MAC subheader includes a backoff indicator (BI), and
wherein, based on the T2 field not indicating that the MAC subheader includes the BI, the MAC SDU indicator associated with the success RAR is identified.