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Reconstruction of aggregation tree in spite of faulty nodes in wireless sensor networks

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2 Author(s)
Sharma, P. ; Dept. of Math., Indian Inst. of Technol. Guwahati, Guwahati, India ; Mandal, P.S.

Recent advances in wireless sensor networks (WSNs) have led to many new promissing applications. However data communication between nodes consumes a large portion of the total energy of WSNs. Consequently efficient data aggregation technique can help greatly to reduce power consumption. Data aggregation has emerged as a basic approach in WSNs in order to reduce the number of transmissions of sensor nodes over aggregation tree and hence minimizing the overall power consumption in the network. If a sensor node fails during data aggregation then the aggregation tree is disconnected. Hence the WSNs rely on in-network aggregation for efficiency but a single faulty node can severely influence the outcome by contributing an arbitrary partial aggregate value. In this paper we have presented a distributed algorithm that reconstruct the aggregation tree from the initial aggregation tree excluding the faulty sensor node. This is a synchronous model, completed in several rounds. Our proposed scheme can handle multiple number of faulty nodes as well.

Published in:

Wireless Communication and Sensor Networks (WCSN), 2010 Sixth International Conference on

Date of Conference:

15-19 Dec. 2010