关键词: 无线传感器网络, 跨层优化, 拓扑控制

Abstract: Due to the diversity of the wireless sensor network and the complexity of the working environment, the topology control method based on the single layer information design is challenged. In order to solve this problem, this paper introduces the concept of game theory and supermodular game, the cross-layer information such as node degree, network connectivity and MAC layer interference level is integrated into the design of utility function, a new topological game model is established, and this model belongs to the supermodular game and has the pure strategy Nash equilibrium. Furthermore, a Cross-layer Optimized WSN Energy balanced Topology Game algorithm（COETG） is proposed based on this topology control model. By simulation and comparative analysis, compared with other game-based topology control algorithms, the COETG algorithm can reduce the node transmitting power under the precondition of guaranteeing the network connectivity and robustness, has good energy balance and energy efficiency, and effectively prolongs the network lifetime and improves the network performance.

Key words: wireless sensor networks, cross-layer optimized, topology control