Hybrid clustering based data aggregation method for multi-target tracking in wireless sensor network
First Claim
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1. A clustering based data aggregation method for multi-target tracking in a sensor network, the method comprising:
- selecting, by a first sensor node, a cluster head from a cluster in a backbone network based on a hop count to a backbone node for relaying target sensing data from the first sensor node to a sink node; and
transmitting the target sensing data to the cluster head such that the cluster head aggregates the target sensing data of the first sensor node and target sensing data of other sensor nodes included in the cluster and transmits the aggregated target sensing data to the backbone node.
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Abstract
Provided are a sensor network structure, a data aggregation method, and a clustering method for efficient multi-target tracking. The multi-target tracking may be efficiently performed in a heterogeneous sensor network by combining clustering methods and adaptively varying the clustering methods. As such, an energy consumption problem in a sensor network may be reduced, and a data transmission delay problem or a data traffic problem may be solved by reducing the amount of data to be transmitted.
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Citations
14 Claims
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1. A clustering based data aggregation method for multi-target tracking in a sensor network, the method comprising:
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selecting, by a first sensor node, a cluster head from a cluster in a backbone network based on a hop count to a backbone node for relaying target sensing data from the first sensor node to a sink node; and transmitting the target sensing data to the cluster head such that the cluster head aggregates the target sensing data of the first sensor node and target sensing data of other sensor nodes included in the cluster and transmits the aggregated target sensing data to the backbone node. - View Dependent Claims (2, 3)
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4. A clustering based data aggregation method for multi-target tracking in a sensor network, the method comprising:
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determining by a first sensor node, a data aggregation method based on a hop count to a backbone node for relaying target sensing data from the first sensor node to a sink node; and transmitting the target sensing data to the backbone node through a cluster head of a cluster which is formed between sensor nodes in a backbone network, according to the determined data aggregation method. - View Dependent Claims (5, 6)
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7. A clustering based data aggregation method for multi-target tracking in a sensor network, the method comprising:
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checking reception traffic by using a backbone node for relaying target sensing data from sensor nodes in a backbone network to a sink node; and flooding the backbone network with control messages for changing a data aggregation method of the sensor nodes in the backbone network, based on the reception traffic. - View Dependent Claims (8, 9)
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10. A clustering method for multi-target tracking in a sensor network, the method comprising:
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temporarily forming a cluster with respect to a target which is sensed by first sensor nodes of which hop counts to a backbone node for relaying first target sensing data from the first sensor nodes in a backbone network to a sink node, are greater than a preset first reference value, and aggregating the first target sensing data by using a first cluster head which is selected from among the first sensor nodes in the cluster; and transmitting second target sensing data to a second cluster head of a preset cluster by using second sensor nodes of which hop counts to the backbone node are less than the first reference value and are greater than a preset second reference value, and aggregating the second target sensing data by using the second cluster head.
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11. A clustering method for multi-target tracking in a sensor network, the method comprising:
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if reception traffic of a backbone node for relaying target sensing data from sensor nodes in a backbone network to a sink node, is greater than a preset threshold value, changing to a static data aggregation method in which the sensor nodes transmit the target sensing data to a cluster head of a preset cluster and the cluster head aggregates the target sensing data and transmits the aggregated target sensing data; and if the reception traffic is less than the threshold value, changing to a dynamic data aggregation method in which a cluster is temporarily formed between sensor nodes which have sensed a target, and a cluster head selected from among the sensor nodes in the cluster aggregates the target sensing data and transmits the aggregated target sensing data.
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12. A sensor network for multi-target tracking, the sensor network comprising:
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sensor nodes which are randomly arranged in the sensor network and sense a target; and a backbone node which covers one of a plurality of backbone networks formed in the sensor network, and relays target sensing data of sensor nodes in a corresponding backbone network, to a sink node. - View Dependent Claims (13, 14)
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Specification