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Game-theoretic approach to power and admission control in hierarchical wireless sensor networks
Authors:Guofang Nan    Zhifei Mao    Minqiang Li
Affiliation:1. Institute of Systems Engineering, College of Management and Economies, Tianjin University, Tianjin 300072, P. R. China
2. Department of Information Management and Management Science, Tianjin University, Tianjin 300072, P. R. China
Abstract:Power efficiency and link reliability are of great importance in hierarchical wireless sensor networks (HWSNs),especially at the key level,which consists of sensor nodes located only one hop away from the sink node called OHS.The power and admission control problem in HWSNs is comsidered to improve its power efficiency and link reliability.This problem is modeled as a non-cooperative game in which the active OHSs are considered as players.By applying a double-pricing scheme in the definition of OHSs’ utility function,a Nash Equilibrium solution with network properties is derived.Besides,a distributed algorithm is also proposed to show the dynamic processes to achieve Nash Equilibrium.Finally,the simulation results demonstrate the effectiveness of the proposed algorithm.
Keywords:hierarchical network  power control  admission control  game theory  double-pricing scheme.
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