Patent ID: 9084092
Filing Date: 2015-07-14
Classification: H04W

Abstract:
1. A communication system comprising a base station and a plurality of mobile stations, wherein the base station comprises: a first storage unit which stores group information corresponding to a group assignable to each of the plurality of mobile stations in association with the mobile station, the group information being data defined by a predetermined bit number; a generator which generates call information defining a group requesting the mobile station to participate, the call information being data defined by a predetermined bit number; a group information transmitter which transmits the group information associated with the mobile station and stored in the first storage unit to the mobile station according to an authentication request from the mobile station; and a call information transmitter which transmits the call information generated by the generator to the mobile station, and each of the plurality of mobile stations comprises: a second storage unit which stores group information received from the base station; a determining unit which determines, according to an operation result of the group information and the call information, whether a group defined by call information received from the base station includes a group corresponding to the group information stored in the second storage unit; a controller which makes a self-device participate in the group determined to be included by the determining unit; and a communicator which transmits and receives data to and from the mobile station forming the group in which the self-device participates.