Data forwarding method for reliable service in sensor networks
First Claim
1. A method for relaying received data by a relay node in a sensor network that includes a sink node, a source node for collecting and transmitting data requested by the sink node, and the relay node for relaying the data transmitted from the source node to the sink node, the method comprising:
- determining whether the source node that transmits the data is a previously identified source node; and
storing the data in a buffer and forwarding the data to a neighbor node when the source node transmitting the data is the previously identified source node.
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Abstract
A method for relaying received data by a relay node in a sensor network that includes a sink node, a source node for collecting and transmitting data requested by the sink node, and the relay node for relaying the data transmitted from the source node to the sink node. The relay node determines whether the source node that transmits the data is a previously identified source node, stores the data in a buffer and forwards the data to a neighbor node when the source node transmitting the data is the previously identified source node according to the determination. The data is managed based on the relay node having the buffer, rather than the source node and the sink node as in the related art. Further, the data error can be promptly handled.
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Citations
20 Claims
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1. A method for relaying received data by a relay node in a sensor network that includes a sink node, a source node for collecting and transmitting data requested by the sink node, and the relay node for relaying the data transmitted from the source node to the sink node, the method comprising:
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determining whether the source node that transmits the data is a previously identified source node; and
storing the data in a buffer and forwarding the data to a neighbor node when the source node transmitting the data is the previously identified source node. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A relay node in a sensor network including a sink node, a source node for collecting and transmitting data requested by the sink node, and the relay node for relaying the data transmitted from the source node to the sink node, the relay node comprising:
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a controller which generates an instruction to store and transmit the data when a source node, which is extracted from the received data, is a previously identified source node; and
a buffer which stores the received data according to the instruction. - View Dependent Claims (8, 9, 10, 11)
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12. A data forwarding system comprising:
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a sink node;
a source node for collecting and transmitting data requested by the sink node; and
a relay node for storing the data in a buffer and forwarding the data to a neighbor node when the source node transmitting the data is a previously identified source node. - View Dependent Claims (13, 14, 15)
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16. A computer readable recording medium storing a program for relaying received data by a relay node in a sensor network that includes a sink node, a source node for collecting and transmitting data requested by the sink node, and the relay node for relaying the data transmitted from the source node to the sink node, the method comprising:
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determining whether the source node that transmits the data is a previously identified source node; and
storing the data in a buffer and forwarding the data to a neighbor node when the source node transmitting the data is the previously identified source node. - View Dependent Claims (17, 18, 19, 20)
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Specification