Abstract: A call connection number management unit acquires the number of call connections. A server suspension control unit transfers a calling process allocated to a call control server selected based on the number of call connections for each of call control servers to the call control server, and suspends the call control server when the calling process allocated to the call control server ceases. An assignment control unit assigns a request to the call control server to which the calling process responding to the request has been transferred, when the call control server that has performed the calling process responding to the request is suspended. A prediction activation control unit calculates a change rate of an increase rate of the number of calls, obtains a prediction value of the number of calls based on the change rate, and when the prediction value exceeds a value, activates the suspended call control server.

Abstract: A congestion control method in a mobile communication network includes the steps of recognizing by a base station control unit of the mobile communication network that the base station control unit or a base station or a cell under the same becomes in a congestion state (Yes in #11), determining a destination for a mobile terminal under a cell in the congestion state to get rid of the congestion state (#12), and sending a notice of information of the destination together with congestion information that is information of the congestion state, based on control performed by the base station control unit, to the base station control unit or the base station under the same in the congestion state or a mobile terminal that is located in the cell under the base station control unit, so that a user of the mobile terminal can recognize the congestion state (#13 and #14).

Abstract: A congestion control method in a mobile communication network includes the steps of recognizing by a base station control unit of the mobile communication network that the base station control unit or a base station or a cell under the same becomes in a congestion state (Yes in #11), determining a destination for a mobile terminal under a cell in the congestion state to get rid of the congestion state (#12), and sending a notice of information of the destination together with congestion information that is information of the congestion state, based on control performed by the base station control unit, to the base station control unit or the base station under the same in the congestion state or a mobile terminal that is located in the cell under the base station control unit, so that a user of the mobile terminal can recognize the congestion state (#13 and #14).

Abstract: A multimedia signal processing apparatus comprises communication service units having a plurality of types of signal processing modes corresponding to a plurality of types of communication service classifications, a communication service classification identifying unit for identifying, on the basis of signal processing request information on one call communicated from a higher-rank node, a communication service classification for that call, and a mode control unit for controlling a signal processing mode of the communication service unit to a mode suitable for the communication service classification identified in the communication service classification identifying unit.

Abstract: A multimedia signal processing apparatus comprises communication service units having a plurality of types of signal processing modes corresponding to a plurality of types of communication service classifications, a communication service classification identifying unit for identifying, on the basis of signal processing request information on one call communicated from a higher-rank node, a communication service classification for that call, and a mode control unit for controlling a signal processing mode of the communication service unit to a mode suitable for the communication service classification identified in the communication service classification identifying unit.