Lin Chi, Wu Guowei, Pirozmand Poria
School of Software, Dalian University of Technology, Road No. 8, Development Zone, Dalian 116620, China.
Sensors (Basel). 2015 Jun 4;15(6):12932-58. doi: 10.3390/s150612932.
The selfish behaviors of nodes (or selfish nodes) cause packet loss, network congestion or even void regions in real-time wireless sensor networks, which greatly decrease the network performance. Previous methods have focused on detecting selfish nodes or avoiding selfish behavior, but little attention has been paid to regulating selfish behavior. In this paper, a Game Theory-based Real-time & Fault-tolerant (GTRF) routing protocol is proposed. GTRF is composed of two stages. In the first stage, a game theory model named VA is developed to regulate nodes' behaviors and meanwhile balance energy cost. In the second stage, a jumping transmission method is adopted, which ensures that real-time packets can be successfully delivered to the sink before a specific deadline. We prove that GTRF theoretically meets real-time requirements with low energy cost. Finally, extensive simulations are conducted to demonstrate the performance of our scheme. Simulation results show that GTRF not only balances the energy cost of the network, but also prolongs network lifetime.
节点的自私行为（或自私节点）会导致实时无线传感器网络中的数据包丢失、网络拥塞甚至空洞区域，这会极大地降低网络性能。先前的方法主要集中在检测自私节点或避免自私行为上，但很少关注调节自私行为。本文提出了一种基于博弈论的实时容错（GTRF）路由协议。GTRF由两个阶段组成。在第一阶段，开发了一个名为VA的博弈论模型来调节节点行为，同时平衡能量消耗。在第二阶段，采用了一种跳跃传输方法，确保实时数据包能够在特定截止日期之前成功传输到汇聚节点。我们证明GTRF在理论上以低能量消耗满足实时要求。最后，进行了广泛的仿真以展示我们方案的性能。仿真结果表明，GTRF不仅平衡了网络的能量消耗，还延长了网络寿命。
