无线Ad Hoc网络单信道并行传输的博弈解决策略  

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

作　　者：李晓记[1] 陈晨[1] 仇洪冰[2] 莫玮[2] 

机构地区：[1]西安电子科技大学综合业务网理论及关键技术国家重点实验室,陕西西安710071 [2]桂林电子科技大学信息与通信学院,广西桂林541004

出　　处：《西安电子科技大学学报》2010年第5期789-794,800,共7页Journal of Xidian University

基　　金：国家自然科学基金重点资助项目(60832005);国家自然科学基金资助项目(60803151;60962001;61071088);NSFC-广东联合基金重点资助项目(U0835004);高等学校学科创新引智计划资助项目(B08038);中央高校基本科研业务费专项资金资助项目(JY10000901002)

摘　　要：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.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.

关 键 词：AD HOC网络 博弈论 纳什均衡解 信干比 并行传输 

分 类 号：TN915[电子电信—通信与信息系统]