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Effect of Selfish Node Behavior on Efficient Topology Design
September 2008 (vol. 7 no. 9)
pp. 1057-1070
The problem of topology control is to assign per-node transmission power such that the resulting topology is energy-efficient and satisfies certain global properties such as connectivity. The conventional approach to achieve these objectives is based on the fundamental assumption that nodes are socially responsible. We examine the following question: if nodes behave in a selfish manner, how does it impact the overall connectivity and energy consumption in the resulting topologies? We pose the above problem as a non-cooperative game and use game-theoretic analysis to address it. We study Nash equilibrium properties of the topology control game and evaluate the efficiency of the induced topology when nodes employ a greedy best response algorithm. We show that even when the nodes have complete information about the network, the steady state topologies are suboptimal. We propose a modified algorithm based on a better response dynamic and show that this algorithm is guaranteed to converge to energy-efficient and connected topologies. Moreover, the node transmit power levels are more evenly distributed and the network performance is comparable to that obtained from centralized algorithms.

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Index Terms:
Network topology, Network management, Algorithm/protocol design and analysis
Ramakant S. Komali, Allen B. MacKenzie, Robert P. Gilles, "Effect of Selfish Node Behavior on Efficient Topology Design," IEEE Transactions on Mobile Computing, vol. 7, no. 9, pp. 1057-1070, Sept. 2008, doi:10.1109/TMC.2008.17
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