Patent ID: 8098622

Claim:
A resource allocation request method for user equipment (UE) to request resource allocation from a base station for uplink traffic transmission in a mobile communication system, the resource allocation request method comprising: a) checking a mode setting condition, by the UE; wherein the checking a mode setting condition comprises: a-1) checking whether a real-time transport control protocol (RTCP) packet is generated; a-2) checking whether adjustment of resource allocation time that has been negotiated with the base station is requested; and a-3) checking whether uplink packet transmission has failed; b) selecting an operation mode among a limited mode and a normal mode according to the checking result; wherein setting the operation mode comprises: b-1) setting the operation mode to the normal mode when the checking of any one of a-1) indicates a RTCP packet is generated, the checking of a-2) indicates adjustment of the resource allocation time is requested, and the checking of a-3) indicates uplink packet transmission failed; b-2) otherwise, setting the operation mode to the limited mode. c) when the normal mode is selected, generating scheduling information that indicates a state of a transmit buffer in which a packet to be transmitted by the UE is queued, by the UE; d) when the limited mode is selected, generating scheduling information that indicates a packet queued in the transmit buffer, by the UE; and e) requesting resource allocation from a base station while transmitting the scheduling information to the base station, by the UE.