Patent ID: 8401031

Claim:
A method for improving user equipment (UE) power consumption during a random access procedure in a wireless communication system, the method comprising: receiving, from a base station (BS), a plurality of available random access preambles having associated random access request causes; selecting one random access preamble among the plurality of available random access preambles, which is associated with a first cause of the associated random access request causes for a UE requesting random access to the wireless communication system; transmitting the selected random access preamble to the BS as a network action request that is associated with the first cause, wherein the transmitted random access preamble includes an identifier for identifying a random access radio network temporary identity (RA-RNTI) to be included in a random access response; receiving, from the BS, a plurality of random access responses; determining if any of the received random access responses includes the same identified RA-RNTI transmitted to the BS by the UE; entering the UE into a power-saving mode only when the received random access response includes the same identified RA-RNTI; and transmitting a new random access preamble only when all of the received random access responses do not include the same identified RA-RNTI.