无线Ad Hoc网络单信道并行传输的博弈解决策略

基于干扰感知的信干比模型，将无线Ad Hoc网络中多个节点随机并行接入同一信道的控制决策过程建模为信道接入博弈．随后，求解此博弈的纳什均衡解作为传输门限，并提出一种单信道多节点并行传输的分布式策略HMAC．仿真结果表明，与IEEE802.11a的MAC协议比较，提出的HMAC协议吞吐量提高了35％～53％，且传输门限可根据活动节点数、互扰比、传输成本及无线接收机的灵敏度自适应调整．本策略允许多个节点在单信道内并行传输，在提高网络吞吐量的同时降低了能量消耗和通信开销．

Game-theoretic approach for concurrent transmission in a single-channel for wireless Ad Hoc networks

Based on the interference-aware SINR (Signal to Interference and Noise Ratio, SINR) model, we formulate a channel access game model, which considers nodes concurrently transmitting in a single-channel in wireless Ad Hoc networks. Then we achieve a Nash Equilibrium Solution (NES) as the transmission threshold, and propose a decentralized concurrent transmission strategy that determines whether to transmit or wait depending on channel conditions for multiple nodes in a single-channel. Simulation results show that the proposed H-MAC protocol achieves about 35％～53％ improvement in network throughput over the 802.11a scheme, and that the transmission threshold should be adaptively tuned depending on the number of active nodes, cross-interference ratio, transmission cost and the sensitivity of the radio receiver. We allow multiple nodes to concurrently transmit in a single-channel, which improves network throughput while reducing the energy consumption and communication overhead.