多用户协同移动ad hoc网络自治式中继选择算法  

Autonomous relay selection algorithm in multi-user cooperative MANET

作　　者：冯文江[1] 贾年龙[1] 陈斌斌[1] 

机构地区：[1]重庆大学通信工程学院,重庆400030

出　　处：《北京信息科技大学学报（自然科学版）》2014年第2期1-7,共7页Journal of Beijing Information Science and Technology University

基　　金：重庆市自然科学基金重点资助项目(CSTC2009BA2064);重庆大学中央高校基本科研业务费资助项目(CDJXS11160003)

摘　　要：针对多用户协同移动ad hoc网络多源中继选择,拟通过较少的信息交互减少系统开销、提升网络性能。设计一种两阶段自治式协同中继选择算法,将中继选择划分为两阶段:源节点组中继选择和空闲节点组中继选择,其中源节点组中继选择按照随机方式或基于信噪比最大原则进行,而空闲节点组中继选择基于中继域为每个源节点生成可选中继子集,避免多个源节点竞争同一候选中继节点。理论分析和仿真结果表明,相比于FPT(fixed priority transmission)机制,两阶段自治式协同中继选择算法能获得更高的包传输率。In light of relay selection in multi-user mobile ad hoc network, this research intends to reduce system overhead while improving network performance with less information exchange. An Autonomous Cooperative Relay Selection （ACRS） protocol which divides the transmission session into two phases, namely user group self-selective phase and idle nodes cooperative relay selection phase, is proposed. In user group self-selective phase, random relay selection or highest signal-to-noise-ratio based relay selection method is considered; in idle nodes cooperative relay selection phase, relay zone is adopted to avoid contending among users for generating candidate relay subset for each source node. The theoretic analysis and simulation results show that the proposed ACRS protocol achieves higher Packet Delivery Rate （PDR） compared with Fixed Priority Transmission（FPT） protocol.

关 键 词：协同通信 移动AD hoc网络 中继选择 协同传输协议 

分 类 号：TN929.5[电子电信—通信与信息系统]