System and method for updating a sleep ID of a mobile station in a BWA communication system

A method for updating, by a base station (BS), a sleep identifier (SLPID) allocated to a mobile station (MS) in a broadband wireless access (BWA) communication system having a sleep mode in which there is no transmission data and an awake mode in which there is transmission data, the sleep mode having a listening interval for which data reception is possible, the method comprising the steps of:

• determining if it is necessary to update a SLPID of a MS in the sleep mode;
• identifying a SLPID allocable to the MS, if it is necessary to update the SLPID of the MS;
• creating SLPID update information including the identified SLPID;
• and
• transmitting the SLPID update information to the MS.

A method for updating a sleep identifier (SLPID), by a mobile station (MS), in a broadband wireless access (BWA) communication system having a sleep mode in which there is no transmission data and an awake mode in which there is transmission data, the sleep mode having a sleep interval for which data reception is impossible and a listening interval for which data reception is possible, the method comprising the steps of:

• receiving a predetermined indication message including an SLPID update indicator;
• checking SLPID update information included in the received indication message;
• and
• updating a current SLPID with a new SLPID according to the SLPID update information.

A system for updating a sleep identifier (SLPID) of a mobile station (MS) in a broadband wireless access (BWA) communication system having a sleep mode in which there is no transmission data and an awake mode in which there is transmission data, the sleep mode having a sleep interval for which data reception is impossible and a listening interval for which data reception is possible, the system comprising:

• an MS;
• and
• a base station (BS) for recognizing that it is necessary to update an SLPID allocated to the MS in the sleep mode in an initial phase of the sleep mode, reallocating a new SLPID to the MS, and transmitting the SLPID update information to the corresponding MS,
• wherein the MS receives the SLPID update information from the BS, and updates its current SLPID with the reallocated SLPID according to the SLPID update information.