认知无线电网络路由技术  

Routing Technology in Cognitive Radio Networks

作　　者：张建照[1] 赵杭生[1] 柳永祥[1] 

机构地区：[1]总参第63研究所

出　　处：《现代军事通信》2014年第2期32-38,共7页

基　　金：国家自然科学基金（61301161）.

摘　　要：认知无线电网络能够根据网络环境变化自适应调整以优化网络性能，被认为是提高频谱利用率和改善用户性能最有前景的网络技术之一。其中，认知路由是建立多跳连接和保证端到端用户性能的关键。文章首先分析认知路由设计面临的邻居发现、公共控制信道选择、路由的频谱自适应以及路由维护和重路由等主要挑战；梳理影响认知路由性能的主要指标；然后根据主要优化目标的不同，对现有的认知路由算法进行分类研究；在总结现有技术特点的基础上，展望认知路由研究的未来发展。Cognitive radio networks （CRN） are capable of reconfiguring network parameters adaptively ac- cording to environment to optimize network performance. They are regarded as one of the most promising technologies for promoting spectrum utilization and userst performance. Cognitive routing is the key for multi-hop connection constructing and user performance guarantee. Based on review of recent literatures, this paper analyzes the main challenges of cognitive routing design such as neighbor discovery, common control channel, spectrum-aware of routing and routing maintenance and rerouting. Routing metrics in CRN are introduced and existing routing algorithms are investigated based on their main optimization ob- jectives. Finally, the characteristics of existing resolutions are summarized and the development of future cognitive routing is discussed.

关 键 词：认知无线电网络 路由 邻居发现 公共控制信道 认知路由指标 

分 类 号：TN929.5[电子电信—通信与信息系统]