Base station with a security sensor

Abstract

Provided is a security technique using a mobile phone terminal and a compact base station that reduce the disadvantages when the mobile phone terminal is left in the house or office or is left without being carried. A base station of a mobile communication system includes a radio unit that wirelessly communicates with a mobile station through wireless communication, a communication unit that communicates with the mobile communication system through a communication line, and a control unit that determines whether there is a location-registered mobile station when a predetermined condition is satisfied and controls the communication unit to transmit a predetermined message to a predetermined counterpart through the communication line when there is no location-registered mobile station.

Dependencies are inferred from the claim text.