认知无线电网络备份路由协议研究  

Research on Backup Routing Protocol for Cognitive Radio Networks

作　　者：宋化[1] 林小拉[1] 

机构地区：[1]中山大学信息科学与技术学院,广东广州510006

出　　处：《小型微型计算机系统》2010年第11期2231-2235,共5页Journal of Chinese Computer Systems

基　　金：国家"八六三"高技术研究发展计划项目(3171310)资助;国家自然科学基金项目(60773199;U0735001)资助

摘　　要：在认知无线电网络,由于非干扰性要求,次用户使用的频段会意外被主用户抢占.这种频段抢占可能频繁发生,它给可靠通信带来巨大的影响.提出一种面向可靠路由的备份路由协议,该协议将机会频谱、链路中断及节点失效考虑在内.仿真实验表明,所提出的新协议能有效地克服间歇连接、减小路由开销和提高数据传输的有效负载.In cognitive radio networks, due to the non-interfering requirement, a spectrum band used by secondary users may be unexpectedly preempted by primary users at any time. Such spectrum band preemptions are likely to occur frequently, which challenges reliable communications. In this paper, we propose a reliability oriented backup routing protocol, which takes into account opportunistic spectrum, link disruption, as well as node failure. Simulation results indicate that our proposed routing protocol can efficiently alleviate intermittent connectivity, reduce routing cost, and improve effective payload of data transmission.

关 键 词：认知无线电 动态频谱访问 备份路由协议 按需路由协议 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]