Deng Yun
ABSTRACT
Given that the selfish behavior performed by saving energy when the nodes of heterogeneous sensor network is transmitting data, the decline or even rejection in providing data forward services for the neighbor nodes, and the consequence of decline or even paralysis of network communication capability, we put forward a game theory-based topology control algorithm(GTTCA) of heterogeneous wireless sensor network after making consideration for the effects that nodes' transmission power and residual energy exert on the sensor network topology. We also design a revenue function related to transmission power, residual energy and the degree of participation (the possibility nodes participating in transmitting data services). The constant game between network nodes and the adjustment in transmission power is to select the strategy maximizing the revenue function to construct the optimal path with the neighbor nodes. By theoretical analysis, after a period of time, the function converges to a stable state, namely, Nash equilibrium state. Through stimulation experiment, compared with the existing algorithm, the one in this paper is able to efficiently adjust the transmission power of nodes, balance the network energy consumption, and to some extent, prolong the life cycle of network.
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Index Terms
- Research on Topology Control Algorithm in Heterogeneous wireless sensor networks Based on the Game Theory
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