Patent ID: 8634340

Claim:
A method for Physical Downlink Control Channel (PDCCH) allocation in a network terminal of a wireless communication system, the wireless communication system supporting a Carrier Aggregation (CA), which enables a user equipment (UE) of the wireless communication system to perform transmission and/or reception through multiple carriers, the method comprising: configuring a first carrier to a UE via a radio resource control (RRC) message; and including, in the RRC message, a carrier information for the first carrier to indicate a second carrier which carries a PDCCH corresponding to the first carrier, wherein the PDCCH on the second carrier is used to transmit downlink assignment or uplink grant for the first carrier, and a correlation between the first carrier, the second carrier and the PDCCH is derived from the carrier information included in the RRC message and is used to monitor the PDCCH.