US 9,814,006 B2
Method and apparatus for controlling uplink random access procedure in mobile communication system
Junghwa Bae, Yongin-si (KR); Sungho Choi, Suwon-si (KR); and Mingoo Kim, Hwaseong-si (KR)
Assigned to Samsung Electronics Co., Ltd., Suwon-si (KR)
Appl. No. 15/29,414
Filed by Samsung Electronics Co., Ltd., Suwon-si, Gyeonggi-do (KR)
PCT Filed Oct. 16, 2014, PCT No. PCT/KR2014/009732
§ 371(c)(1), (2) Date Apr. 14, 2016,
PCT Pub. No. WO2015/056991, PCT Pub. Date Apr. 23, 2015.
Claims priority of application No. 10-2013-0124932 (KR), filed on Oct. 18, 2013; and application No. 10-2014-0011488 (KR), filed on Jan. 29, 2014.
Prior Publication US 2016/0242132 A1, Aug. 18, 2016
Int. Cl. H04W 56/00 (2009.01); H04W 74/08 (2009.01)
CPC H04W 56/0005 (2013.01) [H04W 56/0045 (2013.01); H04W 74/0833 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A method of transmitting/receiving signals by a terminal in a mobile communication system comprising:
transmitting, to a base station, a first random access signal containing a first random access preamble;
receiving, from the base station, a first random access response signal containing first timing advance (TA) information in response to the first random access signal;
transmitting, to the base station, a second random access signal containing a second random access preamble, based on a state of the terminal;
when the second random access signal is transmitted to the base station, receiving, from the base station, a second random access response signal containing second TA information, in response to the second random access signal; and
transmitting, to the base station, a signal according to third TA information determined based on the first TA information and/or the second TA information.