Patent ID: 9363050
Filing Date: 2016-06-07
CPC Classification: H04L,H04W

Claim Text:
1. A method of performing a random access procedure in a wireless communication system, the method comprising: receiving, by a terminal, multi-cell configuration information configuring at least one secondary cell (SCell); receiving, by the terminal, activation information activating one of the at least one SCell; transmitting, by the terminal, a random access preamble in the activated SCell; receiving, by the terminal, a random access response including an uplink resource allocation in a primary cell (PCell), wherein the random access response includes a carrier indicator field (CIF) indicating a specific cell in which a scheduled message will be transmitted, and wherein the CIF is only included in the random access response when the random access preamble is transmitted in the activated SCell; and transmitting, by the terminal, the scheduled message using the uplink resource allocation in the specific cell indicated by the CIF included in the random access response.