CONTROL DEVICE, WIRELESS COMMUNICATION METHOD, WIRELESS COMMUNICATION SYSTEM AND CONTROL PROGRAM

1 . A control device that controls a wireless communication system in which a sum of transmission times for transmitting traffic per unit time is limited for each channel and which performs wireless communication using at least one of a plurality of channels, the control device comprising:

evaluation value total calculation circuitry configured to calculate a transmission capacity of each channel as an evaluation value and calculates an evaluation value total of each combination of one or more channels whose frequency bands do not overlap each other;

selection circuitry configured to select a combination of a predetermined number of channels in which the evaluation value total calculated by the evaluation value total calculation circuitry is a maximum within a predetermined range;

weighting factor calculation circuitry configured to calculate a weighting factor indicating a proportion of a use period of each channel included in the combination selected by the selection circuitry, based on a transmission rate or a transmittable data amount of each channel;

switching time calculation circuitry configured to calculate a switching time for switching a channel for each channel included in the combination selected by the selection circuitry, based on the weighting factor calculated by the weighting factor calculation circuitry; and

switching control circuitry configured to perform control to switch a channel included in the combination selected by the selection circuitry and transmit traffic, based on each switching time calculated by the switching time calculation circuitry.

2 . The control device according to claim 1 ,

wherein the switching control circuitry

performs control to repeat channel switching within a monitoring time that is determined in advance to be a shorter period than the unit time.

3 . A wireless communication method in which a sum of transmission times for transmitting traffic per unit time is limited for each channel and which performs wireless communication using at least one of a plurality of channels, the wireless communication method comprising:

calculating a transmission capacity of each channel as an evaluation value and calculating an evaluation value total of each combination of one or more channels whose frequency bands do not overlap each other;

selecting a combination of a predetermined number of channels in which the calculated evaluation value total is a maximum within a predetermined range;

calculating a weighting factor indicating a proportion of a use period of each channel included in the selected combination, based on a transmission rate or a transmittable data amount of each channel;

calculating a switching time for switching a channel for each channel included in the selected combination, based on the calculated weighting factor; and

controlling to switch a channel included in the selected combination and transmit traffic, based on each calculated switching time.

4 . The wireless communication method according to claim 3 ,

wherein in controlling,

control is performed to repeat channel switching within a monitoring time that is determined in advance to be a shorter period than the unit time.

5 . A wireless communication system in which a sum of transmission times for transmitting traffic per unit time is limited for each channel and which performs wireless communication using at least one of a plurality of channels, the wireless communication system comprising:

an evaluation value total calculation circuitry configured to calculates a transmission capacity of each channel as an evaluation value and calculates an evaluation value total of each combination of one or more channels whose frequency bands do not overlap each other;

a selection circuitry configured to selects a combination of a predetermined number of channels in which the evaluation value total calculated by the evaluation value total calculation circuitry is a maximum within a predetermined range;

a weighting factor calculation circuitry configured to calculates a weighting factor indicating a proportion of a use period of each channel included in the combination selected by the selection circuitry, based on a transmission rate or a transmittable data amount of each channel;

a switching time calculation circuitry configured to calculates a switching time for switching a channel for each channel included in the combination selected by the selection circuitry, based on the weighting factor calculated by the weighting factor calculation circuitry; and

a switching control circuitry configured to performs control to switch a channel included in the combination selected by the selection circuitry and transmit traffic, based on each switching time calculated by the switching time calculation circuitry.

6 . The wireless communication system according to claim 5 ,

wherein the switching control circuitry

performs control to repeat channel switching within a monitoring time that is determined in advance to be a shorter period than the unit time.

7 . A non-transitory computer-readable storage medium storing a control program causing a computer to function as each circuitry of the control device according to claim 1 .