Patent ID: 8831673

Claim:
A user information administration system including a first base station for controlling communication of mobile stations located in a first region with a plurality of frequencies assigned, a second base station having a communication range of a second region within the first region and smaller than the first region, and an information administration device connected for communication with the second base station, the second base station comprising: an annunciation information output module that outputs annunciation information different from annunciation information output from the first base station to the second region; a response information receiving module that receives response information output by a mobile station upon detecting a change of the annunciation information from the mobile station; and a response information transmitting module that transmits the response information received by the response information receiving module to the information administration device, wherein the annunciation information output module sequentially outputs annunciation information corresponding to each frequency in a specified order for each of a plurality of frequencies set by the first base station, and the information administration device comprising: a response information acquisition module that acquires the response information transmitted from the response information transmitting module; a mobile station finding module that finds the mobile station within the second region based on the acquired response information; and an output module that outputs a finding result by the mobile station finding module.