APPARATUS AND METHOD FOR PERFORMING RANDOM ACCESS IN WIRELESS COMMUNICATION SYSTEM

WIPO Patent Application WO/2012/177060

A3

Disclosed are a method and an apparatus for performing a random access by a user equipment in. The method includes transmitting a random access preamble to an evolved-NodeB (eNB) on at least one serving cell; and receiving a random access response message as a response to the random access preamble from the eNB, wherein the random access response message is transmitted through a physical downlink shared channel (PDSCH) ordered by a physical downlink control channel (PDCCH) scrambled by the at least one random access radio network temporary identifier (RA-RNTI) for the at least one serving cell, respectively. The UE can receive timing information for uplink synchronization through a plurality of serving cells to perform the uplink synchronization with the eNB and more effectively configure the random access response message transmitted from the eNB to the UE for uplink synchronization.

WO/2010/102082	CHANGES TO ACCESS PROCEDURE FOR ASC 0 FOR UMTS
WO/2018/030745	UPLINK SIGNAL TRANSMISSION BASED ON TIMING ADVANCE VALUE
WO/2020/167609	LISTEN-BEFORE-TALK (LBT) TYPE AND GAP SIGNALING FOR BACK-TO-BACK GRANTS AND MULTI-TRANSMISSION TIME INTERVAL (MULTI-TTI) GRANTS

AHN JAE HYUN (KR)
KWON KI BUM (KR)

PCT/KR2012/004902

April 04, 2013

June 21, 2012

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PANTECH CO LTD (KR)
AHN JAE HYUN (KR)
KWON KI BUM (KR)

H04W74/08; H04J11/00; H04W56/00

US20110045837A1	2011-02-24
US20100296467A1	2010-11-25
KR20100114852A	2010-10-26

S&IP PATENT & LAW FIRM (Gangnam-gu, Seoul 135-080, KR)

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