Method of transmitting/receiving data in sensor network for reducing overhearing of sensor nodes
First Claim
1. A method of transmitting data in a sensor network by a sender node having transmission data from among a plurality of nodes which perform a low power listening (LPL) operation in an asynchronous manner at predetermined time intervals, the method comprising:
- generating a second preamble comprising at least one first preamble; and
sequentially transmitting the second preamble and the transmission data,wherein each of the at least one first preamble comprises information regarding a destination address of the transmission data, a remainder of the second preamble at a time position of the first preamble, and a length of the transmission data.
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Accused Products
Abstract
Provided is a method of transmitting/receiving data in a sensor node for reducing overhearing of sensor nodes, and a sensor network which implements the method. A sender node having transmission data from among a plurality of nodes which perform a low power listening (LPL) operation in an asynchronous manner at predetermined time intervals, generates a long preamble including short preambles, each having information including a destination address of the transmission data, a remainder of the long preamble, and a length of the transmission data, and sequentially transmits the second preamble and the transmission data. A receiver node from among the plurality of nodes determines whether a valid signal is sensed during an active state in the LPL operation. If it is determined that the valid signal is sensed, the receiver node receives the short preamble transmitted from the sender node. The receiver node determines a duration time of a deactivated state of the receiver node based on the received first preamble, thereby reducing overhearing in the sensor network.
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Citations
19 Claims
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1. A method of transmitting data in a sensor network by a sender node having transmission data from among a plurality of nodes which perform a low power listening (LPL) operation in an asynchronous manner at predetermined time intervals, the method comprising:
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generating a second preamble comprising at least one first preamble; and sequentially transmitting the second preamble and the transmission data, wherein each of the at least one first preamble comprises information regarding a destination address of the transmission data, a remainder of the second preamble at a time position of the first preamble, and a length of the transmission data. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method of receiving data in a sensor network by a receiver node from among a plurality of nodes which perform a low power listening (LPL) operation in an asynchronous manner at predetermined time intervals, the method comprising:
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determining whether a valid signal is sensed during an active state in the LPL operation; receiving a first preamble transmitted from a sender node, which transmits the valid signal, from among the plurality of nodes; and determining a duration time of a deactivated state of the receiver node based on a destination address of data transmitted by the sender node, a remainder of a second preamble including the received first preamble at a time position of the received first preamble, and a length of the data from among information included in the received first preamble. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14)
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15. A method of transmitting/receiving data in a sensor network, the method comprising:
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sender node'"'"'s generating a second preamble comprising at least one first preamble for reducing overhearings of other nodes, where the sender node has transmission data and the sender node and the other nodes are from among a plurality of nodes which perform a low power listening (LPL) operation in an asynchronous manner at predetermined time intervals; the sender node'"'"'s sequentially transmitting the second preamble and the transmission data; receiver node'"'"'s determining whether a valid signal transmitted from the sender node is sensed during an active state in the LPL operation and receiving the first preamble transmitted from the sender node if it is determined that the valid signal is sensed, where the receiver node is from among the plurality of nodes; and the receiver node'"'"'s determining a duration time of a deactivated state of the receiver node based on a destination address of the transmission data transmitted by the sender node, a remainder of the second preamble including the received first preamble at a time position of the received first preamble, and a length of the transmission data from among information included in the received first preamble. - View Dependent Claims (16, 17)
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18. An asynchronous sensor network comprising a plurality of nodes which perform a low power listening (LPL) operation in an asynchronous manner at predetermined time intervals, the asynchronous sensor network comprising:
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a sender node, which is from among the plurality of nodes, generating a second preamble comprising at least one first preamble for reducing overhearing of other nodes if the sender node has transmission data, and sequentially transmitting the second preamble and the transmission data; and a receiver node determining whether a valid signal transmitted from the sender node is sensed during an active state in the LPL operation, receiving the first preamble transmitted from the sender node if it is determined that the valid signal is sensed, and determining a duration time of a deactivated state of the receiver node based on a destination address of the transmission data transmitted by the sender node, a remainder of the second preamble at a time position of the received first preamble, and a length of the transmission data from among information included in the received first preamble. - View Dependent Claims (19)
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Specification