Title:
METHOD AND APPARATUS FOR PERFORMING RANDOM ACCESS PROCEDURE IN WIRELESS COMMUNICATION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2021/149966
Kind Code:
A1
Abstract:
The present invention relates to a method of performing a Random Access (RA) procedure by a user equipment (UE) in a wireless communication system. Especially, the method includes the steps of generating a data unit; transmitting a first MsgA and a second MsgA to a network, wherein the first MsgA includes a first RA preamble and the data unit, and wherein the second MsgA includes a second RA preamble and the data unit; starting a first window for monitoring a first MsgB for the first MsgA and a second window for monitoring a second MsgB for the second MsgA; and monitoring the first MsgB until the first window expires and a second MsgB until the second window expires, wherein, when one of the first MsgB and the second MsgB is detected and when the detected MsgB includes successRAR, both the first and second windows are stopped.
Inventors:
YI SEUNGJUNE (KR)
CHO HEEJEONG (KR)
CHO HEEJEONG (KR)
Application Number:
PCT/KR2021/000491
Publication Date:
July 29, 2021
Filing Date:
January 13, 2021
Export Citation:
Assignee:
LG ELECTRONICS INC (KR)
International Classes:
H04W74/08; H04L1/00; H04W74/00
Other References:
HUAWEI, HISILICON: "Discussion on the timers for 2-step RACH", 3GPP DRAFT; R2-1910678 DISCUSSION ON THE TIMERS FOR 2-STEP RACH, vol. RAN WG2, 16 August 2019 (2019-08-16), Prague, Czech Republic, pages 1 - 4, XP051768449
ERICSSON: "RA type switch and fallback in 2-step RA", 3GPP DRAFT; R2-1915602, vol. RAN WG2, 7 November 2019 (2019-11-07), Reno, Nevada, USA, pages 1 - 3, XP051816003
QUALCOMM INCORPORATED: "Remaining issue on 2-step RACH fall back procedure", 3GPP DRAFT; R2-1916065, vol. RAN WG2, 8 November 2019 (2019-11-08), Reno, Nevada, US, pages 1 - 2, XP051817615
HUAWEI, HISILICON: "MsgA resource configuration and selection", 3GPP DRAFT; R2-1913007 MSGA RESOURCE CONFIGURATION AND SELECTION, vol. RAN WG2, 3 October 2019 (2019-10-03), Chongqing, China, pages 1 - 4, XP051791035
NOKIA, NOKIA SHANGHAI BELL: "Remaining details of 2-step RACH Procedure", 3GPP DRAFT; R1-1912558, vol. RAN WG1, 8 November 2019 (2019-11-08), Reno, Nevada, US, pages 1 - 31, XP051820080
See also references of EP 4094533A4
ERICSSON: "RA type switch and fallback in 2-step RA", 3GPP DRAFT; R2-1915602, vol. RAN WG2, 7 November 2019 (2019-11-07), Reno, Nevada, USA, pages 1 - 3, XP051816003
QUALCOMM INCORPORATED: "Remaining issue on 2-step RACH fall back procedure", 3GPP DRAFT; R2-1916065, vol. RAN WG2, 8 November 2019 (2019-11-08), Reno, Nevada, US, pages 1 - 2, XP051817615
HUAWEI, HISILICON: "MsgA resource configuration and selection", 3GPP DRAFT; R2-1913007 MSGA RESOURCE CONFIGURATION AND SELECTION, vol. RAN WG2, 3 October 2019 (2019-10-03), Chongqing, China, pages 1 - 4, XP051791035
NOKIA, NOKIA SHANGHAI BELL: "Remaining details of 2-step RACH Procedure", 3GPP DRAFT; R1-1912558, vol. RAN WG1, 8 November 2019 (2019-11-08), Reno, Nevada, US, pages 1 - 31, XP051820080
See also references of EP 4094533A4
Attorney, Agent or Firm:
KBK & ASSOCIATES (KR)
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