BASE STATION, MOBILE STATION, AND OPERATING METHOD THEREOF

摘要

PURPOSE: A base station, mobile station, and operation method thereof are provided to offer synchronization information by effectively synchronizing a relay candidate mobile station with a mobile station which requests an emergency call. CONSTITUTION: A base station(200) recognizes an emergency situation of a neighbor base station. The base station broadcasts the emergency situation notification information of the neighbor base station to one or more mobile stations(300) within service coverage. The base station broadcasts location calculation information. The location of the mobile station is calculated based on the location calculation information. In case the mobile station is located a cell edge of a neighbor base station direction, the mobile station broadcasts an emergency situation preamble.