Communication device, method for predicting interruption, control circuit, and program recording medium

A method for predicting interruption comprising:

• a signal determination of determining whether there is a reception signal or not;
• and
• a period estimation of estimating an interruption period of interruption of a signal transmitted from a device that is a source of the reception signal, using a determination result, wherein
• the period estimation includes
• calculating a differential value of the determination result,
• calculating a provisional period of the interruption period using the differential value, controlling use of the differential value and of the provisional period based on an internal state representing an operational state estimating the interruption period, and outputting the provisional period to be used,
• calculating the interruption period using the provisional period,
• calculating a signal existing section referring to a section in which the reception signal exists, using the provisional period,
• estimating periodic timing representing timing of a change, in the determination result, from a section in which the reception signal does not exist to the signal existing section, using the provisional period and using the signal existing section, and
• determining the internal state using the interruption period.

A control circuit for controlling a communication device, wherein, in estimating an interruption period of interruption of a signal transmitted from a device that is a source of the reception signal, using a determination result indicating whether there is a reception signal or not, the control circuit causes the communication device to perform:

• calculating a differential value of the determination result,
• calculating a provisional period of the interruption period using the differential value, controlling use of the differential value and of the provisional period based on an internal state representing an operational state estimating the interruption period, and outputting the provisional period to be used,
• calculating the interruption period using the provisional period,
• calculating a signal existing section referring to a section in which the reception signal exists, using the provisional period,
• estimating periodic timing representing timing of a change, in the determination result, from a section in which the reception signal does not exist to the signal existing section, using the provisional period and using the signal existing section, and
• determining the internal state using the interruption period.

A non-transitory program recording medium storing therein a program for controlling a communication device, wherein, in estimating an interruption period of interruption of a signal transmitted from a device that is a source of the reception signal, using a determination result indicating whether there is a reception signal or not, the program causes the communication device to execute:

• calculating a differential value of the determination result,
• calculating a provisional period of the interruption period using the differential value, controlling use of the differential value and of the provisional period based on an internal state representing an operational state estimating the interruption period, and outputting the provisional period to be used,
• calculating the interruption period using the provisional period,
• calculating a signal existing section referring to a section in which the reception signal exists, using the provisional period,
• estimating periodic timing representing timing of a change, in the determination result, from a section in which the reception signal does not exist to the signal existing section, using the provisional period and using the signal existing section, and
• determining the internal state using the interruption period.