Patent ID: 8280380

Claim:
A method for receiving a neighbor base station advertisement (MOB_NBR-ADV) message by a mobile station in a broadband wireless access system, the method comprising: receiving, by the mobile station, the MOB_NBR-ADV message including an operator identifier (ID) flag field indicating a presence or absence of an operator ID field for identifying a network operator to which the neighbor base station belongs, a Configuration Change Count field for representing whether a configuration of the MOB_NBR-ADV message changes, a Fragmentation Index field for representing an order of a currently transmitted message when the MOB_NBR-ADV message is fragmented and transmitted using a plurality of fragmented messages, and a Total Fragmentation field for representing a total number of the plurality of fragmented messages, wherein the operator ID flag field being set to ‘0’ indicates that the operator ID field is included in the MOB_NBR-ADV message, and wherein the operator ID flag field being set to ‘1’ indicates that the operator ID field is not included in the MOB_NBR-ADV message.