Patent ID: 8547927
Filing Date: 2013-10-01
Classification: H04L,H04W

Abstract:
1. A method for a user equipment to perform random access to a base station in a wireless communication system that supports multiple uplink and downlink component carriers, the method comprising: receiving system information including overall index information of a plurality of the downlink component carriers, the overall index information identifying the plurality of the downlink component carriers, and Physical Random Access Channel (PRACH) Time Frequency (TF) slot and preamble sequence information which is common to all of the plurality of the downlink component carriers, the system information being broadcast through each of the plurality of the downlink component carriers; transmitting a PRACH preamble through one uplink component carrier linked to the plurality of the downlink component carriers using the received PRACH TF slot and preamble sequence information; receiving a Random Access Channel (RACH) response through each of the plurality of the downlink component carriers; and transmitting, using the overall index information, index information of a downlink component carrier, which the user equipment desires to access among the plurality of downlink component carriers, and a Radio Resource Control (RRC) connection request signal.