US 12,457,646 B2
System and method of identifying random access response
Anil Agiwal, Suwon-si (KR); and Mangesh Abhimanyu Ingale, Yongin-si (KR)
Assigned to Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed by Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed on Aug. 26, 2022, as Appl. No. 17/896,426.
Application 17/896,426 is a continuation of application No. 17/122,220, filed on Dec. 15, 2020, granted, now 11,432,340, issued on Aug. 30, 2022.
Application 17/122,220 is a continuation of application No. 16/000,339, filed on Jun. 5, 2018, granted, now 10,904,921, issued on Jan. 26, 2021.
Claims priority of application No. 201711020022 (IN), filed on Jun. 7, 2017; application No. 201711025575 (IN), filed on Jul. 19, 2017; and application No. 201711039948 (IN), filed on Nov. 9, 2017.
Prior Publication US 2022/0418006 A1, Dec. 29, 2022
Int. Cl. H04L 5/00 (2006.01); H04W 48/14 (2009.01); H04W 72/0446 (2023.01); H04W 72/23 (2023.01); H04W 74/00 (2009.01); H04W 74/0833 (2024.01); H04W 74/0838 (2024.01); H04W 88/06 (2009.01)
CPC H04W 74/0833 (2013.01) [H04L 5/0007 (2013.01); H04L 5/001 (2013.01); H04L 5/0044 (2013.01); H04L 5/0053 (2013.01); H04W 72/0446 (2013.01); H04W 72/23 (2023.01); H04W 74/0838 (2024.01); H04W 88/06 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A method performed by a terminal in a wireless communication system, the method comprising:
transmitting a random access preamble to a base station;
receiving a random access response (RAR) medium access control (MAC) protocol data unit (PDU) including a plurality of MAC subPDUs from the base station, wherein one or more subPDUs among the plurality of MAC subPDUs include a MAC RAR and preceding MAC subheader corresponding to the MAC RAR, respectively;
identifying whether a first MAC subPDU among the plurality of MAC subPDUs includes a random access preamble identifier (RAPID) which corresponds to the transmitted random access preamble;
in case that the RAPID in the first MAC subPDU does not correspond to the RAPID of the transmitted random access preamble, identifying whether the RAPID in the first MAC subPDU corresponds to one of RAPIDs for system information (SI) request; and
identifying a presence of a MAC RAR in the first MAC subPDU based on whether the RAPID in the first MAC subPDU corresponds to one of the RAPIDs for SI request or not,
wherein the MAC RAR is not included in the first MAC subPDU and only a first MAC subheader is included in the first MAC subPDU, and next MAC subPDU follows the first MAC subheader, in case that the RAPID in the first MAC subheader corresponds to one of the RAPIDs for SI request, and
wherein the first MAC subheader and the MAC RAR are included in the first MAC subPDU and the next MAC subPDU follows the MAC RAR, in case that the RAPID in the first MAC subheader does not correspond to one of the RAPIDs for SI request.