Communication system, call control device, base station device and recording medium

A communication system including a call control device for calling a plurality of terminal devices in response to a single request of call connection, and establishing the call connection of a single terminal device which answered the call, a base station device for carrying out wireless communication according to the call connection with the terminal device to which a communication band to be occupied is assigned in a communication band which can be used, the communication system comprising:

• a deriving section that derives a communication band required for the call connection of each of the terminal devices to be called when the request of call connection is received;
• a securing section that secures a communication band having the maximum width in each of the derived communication bands in the communication band which can be used;
• and
• an assigning section that assigns a communication band to be occupied in the secured communication band to the terminal device which answered the call.

A call control device for calling a plurality of terminal devices in response to a single request of call connection, and establishing, for a single terminal device which answered the call, the call connection in a communication band assigned in a communication band which can be used, the call control device comprising:

• a deriving section that derives a communication band required for the call connection of each of the terminal devices to be called when the request of call connection is received;
• a securing section that secures a communication band having the maximum width in each of the derived communication bands in the communication band which can be used;
• and
• an assigning section that assigns a communication band to be occupied in the secured communication band to the terminal device which answered the call.

A base station device for carrying out wireless communication by assigning a communication band to be occupied in a communication band which can be used, with a single terminal device which established connection in response to the call among a plurality of terminals called in response to a request of call connection, the base station device comprising:

• when the request of call connection is received,
• a deriving section that derives a communication band required for the call connection of each of the terminal devices to be called;
• a securing section that secures a communication band having the maximum width in each of the derived communication bands in the communication band which can be used;
• and
• an assigning section that assigns a communication band to be occupied in the secured communication band to the terminal device which answered the call.

A computer readable recording medium storing a computer program causing a computer to execute processing according to call connection, the computer calling a plurality of terminal devices in response to a single request of the call connection, and establishing, for a single terminal device which answered the call, the call connection in a communication band assigned in a communication band which can be used, the computer program comprising:

• causing the computer to derive a communication band required for the call connection of each of the terminal devices to be called when the request of call connection is received;
• causing the computer to secure a communication band having the maximum width in each of the derived communication bands in the communication band which can be used;
• and
• causing the computer to assign a communication band to be occupied in the secured communication band to the terminal device which answered the call.

A computer readable recording medium storing a computer program causing a computer to execute processing according to call connection, the computer carrying out wireless communication according to the call connection by assigning a communication band to be occupied in a communication band which can be used, with a single terminal device which established connection in response to a call among a plurality of terminals called in response to a single request of call connection, the computer program comprising:

• causing the computer to derive a communication band required for the call connection of each of the terminal devices to be called when the request of call connection is received;
• causing the computer to secure a communication band having the maximum width in each of the derived communication bands in a communication band which can be used;
• and
• causing the computer to assign a communication band to be occupied in the secured communication band to the terminal device which answered the call.