Patent ID: 8964793
Filing Date: 2015-02-24
Classification: H04L,H04W,Y02D

Abstract:
1. A method for adjusting timing of a terminal in a wireless communication system supporting carrier aggregation of at least one carrier, the method comprising: transmitting a Random Access Preamble corresponding to a random access preamble transmitted to a primary cell of a base station to a secondary cell of the base station; receiving a Random Access Response with a Timing Advance Command (TAC) for commanding uplink timing adjustment from the base station, wherein the Random Access Response comprises information indicating a Timing Advance Group (TAG) to which the TAC is applied; identifying the TAG for applying the TAC among TAG of the primary cell or TAG of the secondary cell based on the information; and adjusting the uplink timing by applying the uplink TAC to at least one cell included in the identified TAG.