Patent ID: 8737195

Claim:
A system for detecting collision of a reference signal comprising: a plurality of base stations, each of of the plurality of base stations outputs first detection information representing a code of a reference signal and representing a mobile device receiving the code of the reference signal, the code of the reference signal determined on the basis of transition of a status at the time of occurrence of disconnection of the radio link between the mobile device and a first base station of the plurality of base stations, to be capable of causing the collision of the code of the reference signal, and second detection information representing a code of a reference signal and representing a mobile device receiving the code of the reference signal, the code of the reference signal on the basis of occurrence of failure of reconnection of the radio link between the mobile device and a second base station of the plurality of base stations, to be capable of causing the collision of the code of the reference signal; and a collision detection device that estimates that, in the case where the code and the mobile device of the first detection information received from the first base station coincide with the code and the mobile device of the second detection information received from the second base station different from the first base station from which the first detection information is received, the collision of the code of the reference signal will be caused.