On energy-security tradeoffs and cooperation for wireless ad hoc networks

In this paper we discuss the inherent security-energy tradeoffs that exist in wireless ad hoc networks. We propose a closed form cost computation approximation formula to determine the energy cost of monitoring for an intrusion detection algorithm based on its computational complexity and data size. Based on energy and security costs, we formulate a game theoretic distributed monitoring algorithm that enforces cooperative behavior for individual nodes by means of reward functions. Various energy-security tradeoffs operating points for the network intrusion detection can be achieved by tuning the rewards parameter.