A communicating unit of a base station performs a plurality of periodic communication services with a wireless terminal. A communication control unit of the base station includes, in a control channel, identification information for distinguishing the periodic communication services one from the other to thereby allow the wireless terminal to control at least one of activation and release of each of the periodic communication services. A communicating unit of the wireless terminal performs the plurality of periodic communication services with the base station. A communication control unit of the wireless terminal controls at least one of the activation and the release of each of the periodic communication services using the identification information included in the control channel transmitted from the base station.