TITLE

An Energy-Efficient MAC Protocol for WSNs: Game-Theoretic Constraint Optimization with Multiple Objectives

AUTHOR(S)
Liqiang Zhao; Le Guo; Li Cong; Hailin Zhang
PUB. DATE
November 2009
SOURCE
Wireless Sensor Network;Nov2009, Vol. 1 Issue 4, p358
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
In WSNs, energy conservation is the primary goal, while throughput and delay are less important. This results in a tradeoff between performance (e.g., throughput, delay, jitter, and packet-loss-rate) and energy consumption. In this paper, the problem of energy-efficient MAC protocols in WSNs is modeled as a game-theoretic constraint optimization with multiple objectives. After introducing incompletely cooperative game theory, based on the estimated game state (e.g., the number of competing nodes), each node independently implements the optimal equilibrium strategy under the given constraints (e.g., the used energy and QoS requirements). Moreover, a simplified game-theoretic constraint optimization scheme (G-ConOpt) is presented in this paper, which is easy to be implemented in current WSNs. Simulation results show that G-ConOpt can increase system performance while still maintaining reasonable energy consumption
ACCESSION #
45453358

 

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