Patent ID: 8824389

Claim:
A communication method using multiple carriers of a user equipment in a multiple-carrier system, the method comprising: configuring a primary carrier; acquiring multi-carrier control information for monitoring a control channel of a secondary carrier, the multi-carrier control information being acquired through a physical downlink control channel (PDCCH) of the primary carrier, the multi-carrier control information being included in a master information block (MIB) or system information block (SIB) of system information (SI) transmitted through the PDCCH, a dedicated radio network temporary identifier (RNTI) being used to identify the multi-carrier control information among other control information transmitted through the PDCCH, the multi-carrier control information including monitoring information related to a resource for monitoring the control channel of the secondary carrier, the monitoring information indicating a location or size of the resource for the monitoring the control channel of the secondary carrier; and monitoring the control channel of the secondary carrier according to the multi-carrier control information.