A Security Protocol for Hierarchical Sensor Networks
نویسندگان
چکیده
Wireless sensor networks are ad hoc networks comprised mainly of small sensor nodes with limited resources, and can be used to monitor areas of interest. Recent work has shown that hierarchical organizations can increase system throughput, decrease system delay, and save energy; and that energy savings increase as we increase the number of hierarchy levels in the network. Further gains can be obtained if heterogeneous nodes are used in the network. In this paper, we propose a solution for securing heterogeneous hierarchical sensor networks with arbitrary number of levels. Our solution relies exclusively on symmetric key schemes, albeit exploiting the fact that there are more powerful nodes in the network, which we assign heavier computation and communication loads. It is highly distributed, takes into account node interaction patterns that are specific to clustered wireless sensor networks, and enables data aggregation at cluster heads.
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