Patent ID: 8243667

Claim:
A method of requesting a scheduling request (SR) for a shared uplink control channel resource in a wireless communication system, the method performed by a terminal and comprising: determining whether or not the SR is triggered; if the SR is determined to be triggered, determining whether or not an existing shared uplink control channel resource is assigned to the terminal's Cell-Radio Network Temporary Identifier (C-RNTI); and if no existing shared uplink control channel resource is determined to be available, performing the following operation: determining whether or not a Physical Uplink Control Channel (PUCCH) is configured for the terminal; if the PUCCH is configured for the terminal, sending the SR via the PUCCH for a predetermined number of time, and monitoring a Physical Downlink Control Channel (PDCCH) for a new shared uplink control channel resource that is assigned to the terminal's C-RNTI; and if the PUCCH is not configured for the terminal, initiating a random access procedure to obtain the new shared uplink control channel resource.