A mobile station for establishing a signaling control channel and a shared data channel between a radio access network apparatus and the mobile station to perform communication includes discontinuous reception means configured to perform discontinuous reception of broadcast information using the signaling control channel, shared data channel reception determination means configured to determine whether to receive the shared data channel based on an item of broadcast information and information indicating presence or absence of change of content corresponding to the item of the broadcast information that are transmitted by the signaling control channel, and shared data channel reception means configured to receive the shared data channel according to the determination.