Communication terminal device, communication system, and method of controlling communication terminal device
First Claim
1. A communication terminal device comprising:
- a wireless communication unit configured to wirelessly communicate with control devices;
a detection unit configured to detect a control signal instructing start of registration processing for causing a desired control device among the control devices to register the communication terminal device as a target to be controlled;
a channel selection unit configured to sequentially select, from a plurality of frequency channels, a frequency channel to be used in transmission of a beacon request for requesting each of the control devices to transmit a beacon signal;
a first transmission control unit configured to transmit, via the wireless communication unit, the beacon request to the control devices by using the frequency channel selected by the channel selection unit; and
a receiving unit configured to receive, via the wireless communication unit, the beacon signal transmitted from each of the control devices in response to the beacon request,wherein the channel selection unit is configured to select at random a first frequency channel to be used in transmission of the beacon request from the frequency channels, when the detection unit detects the control signal, andthe channel selection unit is configured to select at random a first frequency channel to be used in re-transmission of the beacon request, when the detection unit re-detects the control signal.
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Accused Products
Abstract
A communication terminal device includes the following units. A detection unit detects a control signal instructing start of registration processing. A channel selection unit selects at random, from a plurality of frequency channels, the first frequency channel to be used in transmission of a beacon request when the control signal is detected. A scan control unit transmits the beacon request to the control devices by using the selected frequency channel. A receiving unit receives the beacon signal transmitted from each of the control devices. A list storage unit stores a predetermined parameter included in the beacon signal and the frequency channel in association with each other. A registration control unit transmits a registration request signal to the control device.
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Citations
11 Claims
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1. A communication terminal device comprising:
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a wireless communication unit configured to wirelessly communicate with control devices; a detection unit configured to detect a control signal instructing start of registration processing for causing a desired control device among the control devices to register the communication terminal device as a target to be controlled; a channel selection unit configured to sequentially select, from a plurality of frequency channels, a frequency channel to be used in transmission of a beacon request for requesting each of the control devices to transmit a beacon signal; a first transmission control unit configured to transmit, via the wireless communication unit, the beacon request to the control devices by using the frequency channel selected by the channel selection unit; and a receiving unit configured to receive, via the wireless communication unit, the beacon signal transmitted from each of the control devices in response to the beacon request, wherein the channel selection unit is configured to select at random a first frequency channel to be used in transmission of the beacon request from the frequency channels, when the detection unit detects the control signal, and the channel selection unit is configured to select at random a first frequency channel to be used in re-transmission of the beacon request, when the detection unit re-detects the control signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A communication terminal device comprising:
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a wireless communication unit configured to wirelessly communicate with control devices; a detection unit configured to detect a control signal instructing start of registration processing for causing a desired control device among the control devices to register the communication terminal device as a target to be controlled; a channel selection unit configured to sequentially select, from a plurality of frequency channels, a frequency channel to be used in transmission of a beacon request for requesting each of the control devices to transmit a beacon signal; a first transmission control unit configured to transmit, via the wireless communication unit, the beacon request to the control devices by using the frequency channel selected by the channel selection unit; a receiving unit configured to receive, via the wireless communication unit, the beacon signal transmitted from each of the control devices in response to the beacon request; and a second storage unit configured to store information indicating a frequency channel that is currently used to transmit the beacon request, wherein the channel selection unit is configured to select at random a first frequency channel to be used in transmission of the beacon request from the frequency channels, when the detection unit detects the control signal, and the channel selection unit is configured to, when the detection unit re-detects the control signal, determine, as a first frequency channel to be used in re-transmission of the beacon request, one of (a) the frequency channel stored in the second storage unit and (b) a subsequent frequency channel.
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11. A control method of controlling a communication terminal device, the method comprising:
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detecting a control signal instructing start of registration processing for causing a desired control device among a plurality of control devices to register a communication terminal device as a target to be controlled; sequentially selecting, from a plurality of frequency channels, a frequency channel to be used in transmission of a beacon request for requesting each of the control devices to transmit a beacon signal; transmitting the beacon request to each of the control devices by using the frequency channel selected in the selecting; and receiving the beacon signal from each of the control devices in response to the beacon request, wherein in the selecting, a first frequency channel to be used in transmission of the beacon request is selected at random from the frequency channels, when the control signal is detected in the detecting, and in the selecting, a first frequency channel to be used in re-transmission of the beacon request is selected at random, when the control signal is re-detected in the detecting.
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Specification