认知无线mesh网中联合路由的分布式信道分配算法  

Distributed joint routing and channel assignment algorithm in cognitive wireless mesh networks

作　　者：顾金媛[1] 章国安[1,2] 包志华[1] 

机构地区：[1]南通大学电子信息学院,江苏南通226019 [2]东南大学移动通信国家重点实验室,南京210096

出　　处：《计算机应用研究》2010年第9期3476-3479,共4页Application Research of Computers

基　　金：国家自然科学基金资助项目(60872002);江苏省高校自然科学重大基础研究(07KJA51007);江苏省教育厅“青蓝工程”资助项目;东南大学移动通信国家重点实验室开放研究基金资助项目(W200912);江苏省普通高校研究生科研创新计划资助项目((CX09S_021Z);南通大学研究生科技创新计划资助项目(YKC09046)

摘　　要：多信道技术通过对数据流量进行分流,能够减少链路间干扰,从而提升网络容量。首先针对认知无线mesh网络提出一种有效的联合路由的分布式信道分配策略,该信道分配策略主要宗旨是维持邻域内信道差异。仿真结果表明,新的信道分配算法相比于无线多信道网络中基于链接的信道分配算法,平均吞吐量大约提高了50%,平均时延降低了约50%。在信道约束的情况下,进一步引入了信道合并算法。仿真结果表明,执行信道合并算法后,网络平均吞吐量、时延性能得到了进一步改善。Multiple channels can increase network capacity by transmitting traffic on different channels in an interference are a. Firstly,this paper proposed an efficient distributed joint routing and channel assignment strategy for cognitive wireless mesh networks. The main purpose of this channel allocation strategy was to maintain the channel diversity in the neighborhood. Simulation results show that compared to the link-based channel allocation algorithm in wireless multi-channel network,the average throughput approximately increases by 50% ,and the average delay reduces by 50% with the new algorithm. Then,also proposed a channel merging algorithm in the channel constrained situation. Simulation results also show that,after the implementation of the channel merging algorithm,the network average throughput and delay performance have been further improved significantly,too.

关 键 词：信道分配 路由 认知无线mesh网 

分 类 号：TN92[电子电信—通信与信息系统]