Intermittent operation communication device and communication system using beacon and sleep mode
First Claim
1. A communication system, comprising a plurality of intermittent operation communication devices for transmitting data to a receiving communication device, which periodically repeats an intermittent operation including sleep, transmission of a reception timing announcement beacon, and either of data reception and data reception wait, each of said plurality of intermittent operation communication devices as a first communication device comprising:
- a data transmitter for performing transmission when data traffic designating as a destination thereof the receiving communication device is generated in the first communication device and the first communication device receives the reception timing announcement beacon from the receiving communication device;
a transmission announcer for intermittently transmitting a first transmission announcement beacon while waiting for reception of the reception timing announcement beacon from the receiving communication device when the data traffic is generated; and
an adjuster for monitoring, when the data traffic is generated, reception of a second transmission announcement beacon from another intermittent operation communication device as a second communication device, and permitting the data transmitter to perform transmission,wherein said adjuster, when the second transmission announcement beacon is received, places the first communication device into a sleep mode for a predetermined period of time to cause said data transmitter to delay the transmission,said transmission announcer records in the first transmission announcement beacon a first number of repetitions of transmitting the first transmission announcement beacon in connection with the generated data traffic, andthe second transmission announcement beacon includes a second number of repetitions of transmitting the second transmission announcement beacon.
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Accused Products
Abstract
An intermittent operation communication device periodically repeats beacon transmission, data reception or data reception wait, and sleep to transmit data to any of reception side communication devices. The intermittent operation communication device includes a data transmitter for performing transmission when receiving a beacon from any of the reception side communication devices and having data traffic generated meant for a reception side communication device, a transmission announcer for intermittently transmitting a transmission announcement beacon while waiting for reception when having the data traffic generated, and an adjuster for monitoring a transmission announcement beacon from any other of the intermittent operation communication devices to adjust the transmission of the data traffic.
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Citations
17 Claims
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1. A communication system, comprising a plurality of intermittent operation communication devices for transmitting data to a receiving communication device, which periodically repeats an intermittent operation including sleep, transmission of a reception timing announcement beacon, and either of data reception and data reception wait, each of said plurality of intermittent operation communication devices as a first communication device comprising:
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a data transmitter for performing transmission when data traffic designating as a destination thereof the receiving communication device is generated in the first communication device and the first communication device receives the reception timing announcement beacon from the receiving communication device; a transmission announcer for intermittently transmitting a first transmission announcement beacon while waiting for reception of the reception timing announcement beacon from the receiving communication device when the data traffic is generated; and an adjuster for monitoring, when the data traffic is generated, reception of a second transmission announcement beacon from another intermittent operation communication device as a second communication device, and permitting the data transmitter to perform transmission, wherein said adjuster, when the second transmission announcement beacon is received, places the first communication device into a sleep mode for a predetermined period of time to cause said data transmitter to delay the transmission, said transmission announcer records in the first transmission announcement beacon a first number of repetitions of transmitting the first transmission announcement beacon in connection with the generated data traffic, and the second transmission announcement beacon includes a second number of repetitions of transmitting the second transmission announcement beacon.
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2. An intermittent operation communication device for transmitting data to a receiving communication device that periodically repeats an intermittent operation including sleep, transmission of a reception timing announcement beacon, and either of data reception and data reception wait, the intermittent operation communication device as a first communication device comprising:
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a data transmitter for performing transmission when data traffic designating as a destination thereof the receiving communication device is generated in the first communication device and the first communication device receives the reception timing announcement beacon from the receiving communication device; a transmission announcer for intermittently transmitting a first transmission announcement beacon while waiting for reception of the reception timing announcement beacon from the receiving communication device when the data traffic is generated; and an adjuster for monitoring, when the data traffic is generated, reception of a second transmission announcement beacon from another sending communication device as a second communication device, and permitting the data transmitter to perform the transmission, wherein the adjuster places, when the second transmission announcement beacon is received, the first communication device into a sleep mode for a predetermined period of time to cause said data transmitter to delay the transmission, said transmission announcer records in the first transmission announcement beacon a first number of repetitions of transmitting the first transmission announcement beacon in connection with the generated data traffic, and the second transmission announcement beacon includes a second number of repetitions of transmitting the second transmission announcement beacon. - View Dependent Claims (3, 4, 5, 6, 7, 8)
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9. An intermittent operation communication device for transmitting data to a receiving communication device which periodically repeats an intermittent operation including sleep, transmission of a reception timing announcement beacon, and either of data reception and data reception wait and sleep, the intermittent operation communication device comprising:
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a data transmitter for performing transmission when data traffic designating as a destination thereof the receiving communication device is generated in the intermittent operation communication device and the intermittent operation communication device receives the reception timing announcement beacon from the receiving communication device; a transmission announcer for intermittently transmitting a first transmission announcement beacon while waiting for reception of the reception timing announcement beacon from the receiving communication device when the data traffic is generated; and an adjuster for monitoring reception of a second transmission announcement beacon from other communication device when the data traffic is generated, wherein said transmission announcer starts to transmit the first transmission announcement beacon when a random period of time lapses after the data traffic is generated, said transmission announcer records in the first transmission announcement beacon a first number of repetitions of transmitting the first transmission announcement beacon in connection with the generated data traffic, and the second transmission announcement beacon includes a second number of repetitions of transmitting the second transmission announcement beacon. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17)
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Specification