Patent ID: 8103276

Claim:
A method of controlling an idle mode entry of a mobile station (MS) in a wireless communication system, the method comprising: receiving, by the MS, a message including a first action code from a base station (BS), wherein the first action code orders that the MS initiate idle mode; transmitting, by the MS in response to the message including the first action code, a message including a second action code to the BS when the MS has uplink data to transmit, in order to maintain normal operation, wherein the second action code rejects the order that the MS initiate idle mode; transmitting, by the MS in response to the message including the first action code, a message including a third action code to the BS when the MS is ready to enter idle mode, wherein the third action code requests that the BS de-register the MS from the BS; receiving, by the MS, a message including a fourth action code from the BS in response to the message including the third action code, wherein the fourth action code indicates that the MS is to maintain normal operation; and maintaining normal operation according to the message including the fourth action code.