METHOD AND APPARATUS FOR PERFORMING WIRELESS SENSOR NETWORK COMMUNICATING SELECTIVELY USING INFRARED AND RADIO FREQUENCY COMMUNICATION
First Claim
1. A wireless sensor network communication apparatus, comprising:
- a first communicating means for wakening a neighboring node in a sleep mode through an infrared signal and transmitting/receiving the woken node and sensor data;
a second communicating means for transmitting/receiving the woken neighboring node and the sensor data through a radio frequency signal; and
a wireless node processing means for being wakened from the sleep mode when a wake-up signal of the infrared signal is received through the first communicating means, wakening the neighboring node in the sleep mode through the first communicating means to transmit the received sensor data to the object node when the sensor data are received through one of the first and second communicating means, and transmitting the sensor data with a minimum low power through one of the first and second communicating means.
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Abstract
A wireless sensor network communication apparatus and method selectively using infrared and radio frequency communication. The wireless sensor network communication apparatus includes a first communicating unit, a second communication unit, and a wireless node processor. The first communicating unit wakens a neighboring node in a sleep mode and transmits/receives the woken node and sensor data. The second communicating unit transmits/receives the woken neighboring node and the sensor data. The wireless node processor is wakened from the sleep mode, wakens the neighboring node in the sleep mode, and transmits the sensor data with a minimum low power through one of the first and second communicating unit. Accordingly, the apparatus can perform the wireless sensor network communication with lower power compared to the case that communication is performed only by the radio frequency communication function.
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Citations
14 Claims
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1. A wireless sensor network communication apparatus, comprising:
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a first communicating means for wakening a neighboring node in a sleep mode through an infrared signal and transmitting/receiving the woken node and sensor data; a second communicating means for transmitting/receiving the woken neighboring node and the sensor data through a radio frequency signal; and
a wireless node processing means for being wakened from the sleep mode when a wake-up signal of the infrared signal is received through the first communicating means, wakening the neighboring node in the sleep mode through the first communicating means to transmit the received sensor data to the object node when the sensor data are received through one of the first and second communicating means, and transmitting the sensor data with a minimum low power through one of the first and second communicating means. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A wireless sensor network communicating method, comprising the steps of:
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a) maintaining a sleep mode after entering into a wireless node status; b) determining whether data to be transmitted are generated in the sleep mode; c) transiting the sleep mode into a wake-up mode if the data to be transmitted are generated; d) converting the wake-up signal for wakening a neighboring node into a first communicating method signal, transmitting the first communicating method signal to the neighboring node and wakening the neighboring node; and e) converting the data into a second communicating method signal, receiving the wake-up signal converted into the first communicating method signal and transmitting the first communicating method signal to the woken neighboring node. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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Specification