Patent ID: 8355728

Claim:
A method for operating an out of service (OOS) mode of a femto base station (FBS) in a broadband wireless access system, the method comprising: determining whether a predetermined OOS mode initiation condition is satisfied; broadcasting OOS mode information indicating an initiation of the OOS mode of the FBS via a broadcast medium access control (MAC) message, if the OOS mode initiation condition is satisfied; and setting a bit for preventing a mobile station entry or re-entry on a predetermined broadcast channel which is broadcast periodically before entering the OOS mode, wherein the OOS mode information further comprises at least one of action type information indicating the OOS mode, reason information indicating a reason of the OOS mode initiation, OOS start time information in which the FBS starts the OOS mode, OOS time interval information during which the FBS is operated in the OOS mode, and a list of recommended BSs, wherein the corresponding OOS mode information is included in the broadcast MAC message, and wherein the broadcast MAC message is an Advanced Air Interface Self Organizing Network ADVertizement (AAI-SON-ADV) message, and the predetermined broadcast channel is a super frame header (SFH).