Method for performing idle mode in broadband wireless access system

The present invention with respect to all mobile station for implementing the idle mode (Idle Mode) method applied to a broadband wireless access system (Broadband Wireless Access System), present in the idle mode in the paging area, that is necessary to maintain the idle mode, checking whether or not and determined that the broadcast idle mode, all mobile stations in the case where it is more important to keep the idle mode, paging the paging advertisement message (MOB-PAG-ADV) omitted parameters present in the in the paging area (Broadcasting) and relates to a idle mode performing method comprising comprising, an idle mode by reducing the size of the message to provide information about the maintenance status, utilizing the downlink radio resources more efficiently, and the idle mode, which it is effective to minimize the power in the mobile station for the message processing. Broadband wireless access system, an idle mode, a paging advertisement message