一种改进的认知无线网络路由算法  

Improved Algorithm for Cognitive Radio Networks Routing Protocol

作　　者：赵建立[1] 苑津莎[1] 韩东升[1] 

机构地区：[1]华北电力大学,河北保定071003

出　　处：《电视技术》2014年第7期140-144,共5页Video Engineering

基　　金：国家自然科学基金项目(61302106)

摘　　要：在SEARCH路由协议中,如果当前路由处于前向避免区域,会造成频谱切换,影响网络拓扑,增加端到端延迟和能量消耗。提出基于地理位置和前向反馈的认知路由算法来解决这一问题。通过信息反馈,该算法能可靠地选择最佳下一跳路由;同时提出认知网络路由算法的评估方案。仿真表明,所提路由选择算法可以很好地降低端到端的延迟和能量消耗。In SEARCH routing protocol ,when the best forward router locals in the Forward Avoidance Region, SEARCH prefers to switch from one fre- quency band to another,which affects networks topology and increases the end-to-end delay and energy consumption. This paper presents a new routing protocol based on geography and forward feedback to solve this serious problem. Based on the feedback information ,the algorithm can select the best next hop reliably. In additional, a comprehensive routing evahzation scheme for cognitive radio is also proposed. Simulation results show that, the proposed al- gorithm provides better shortest path and reduces the end-to-end delay, as a result saving the global energy consumption compared to SEARCH.

关 键 词：认知无线电 路由 端到端延迟 能量消耗 信息反馈 SEARCH路由协议 

分 类 号：TN919.8[电子电信—通信与信息系统]