Fuzzy key dissemination limiting method for the dynamic filtering-based sensor networks

Authors:
Byung Hee Kim;Hae Young Lee;Tae Ho Cho
Affiliations:
School of Information and Communication Engineering, Sungkyunkwan University, Suwon, Korea;School of Information and Communication Engineering, Sungkyunkwan University, Suwon, Korea;School of Information and Communication Engineering, Sungkyunkwan University, Suwon, Korea
Venue:
ICIC'07 Proceedings of the intelligent computing 3rd international conference on Advanced intelligent computing theories and applications
Year:
2007

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Abstract

The dynamic en-route filtering scheme (DEF) proposed by Yu and Guan was designed to detect and drop false reports in wireless sensor networks. In this scheme the choice of a threshold value that limits the key dissemination is important since it represents a trade-off between detection power and overhead. A large threshold value increases the probability of detecting false reports but it consumes too much energy in the key dissemination phase. Thus, we should choose a threshold value such that it provides sufficient detection power, while consumes energy effectively. In this paper we propose a key dissemination limiting method for DEF. The threshold value to limit the key dissemination is determined by a fuzzy rule-based system with consideration of the energy level of the network, the number of keys in a cluster, and the distance from the base station (BS) to that cluster. The simulation results show that the proposed method can conserve energy, while it provides sufficient detection power.