一种动态频谱分配的认知无线网络路由协议  

A Dynamic Spectrum Assignment Based Cognitive Wireless Network Routing Protocol

作　　者：罗先录 张永棠 Luo Xianlu;Zhang Yongtang(Department of Computer Science and Technology,Guangdong Neusoft Institute,Foshan 528225,China;Institute of Cooperative Sensing and Advanced Computing Technology,Nanchang Technology Institute,Nanehang 330003,China)

机构地区：[1]广东东软学院计算机科学与技术系,广东佛山528225 [2]南昌工程学院江西省协同感知与先进计算技术研究所,江西南昌330003

出　　处：《湖南科技大学学报（自然科学版）》2018年第4期98-104,共7页Journal of Hunan University of Science And Technology：Natural Science Edition

基　　金：国家自然科学基金资助项目(61363047);广东省佛山市科技创新项目资助(2016AG100792)

摘　　要：在无线网络中,采用动态频谱接入策略的认知无线电(Cognitive Radio,CR)技术解决了频谱资源紧张以及利用率低的问题.基于该技术,采用ON/OFF过程对主用户行为进行建模,提出了一种信道可用性的动态源路由协议(CADSR).该协议通过认知节点相互告知彼此的信道感知结果建立邻居节点信道列表,在寻路的过程中通过查找邻居信道列表选择可用性较高的信道来优化信道分配,其路由维护机制也针对认知网络中的间歇性连接问题进行了设计.实验表明,该协议相对于DSR协议能够有效地提高频谱利用率并降低重路由概率.In the wireless network,cognitive radio(CR) technology,which adopted dynamic spectrum access strategy,solved the problem that the spectrum resource was tight and the utilization rate was low.Based on this technology,a dynamic source routing protocol(CA-DSR) was proposed by using the ON/OFF process to model the main user behavior.The protocol established the neighbor node channel list by informing each other of the channel perception results of each other,and selected the channels with higher availability in searching the neighbor channel list during path finding to optimize the channel allocation.The routing maintenance mechanism were designed,that also aimed at the cognitive network in the intermittent connection problems,.Experiments show that the proposed protocol effectively improve the spectral efficiency and reduce the rerouting probability compared with the DSR protocol.

关 键 词：认知无线Ad HOC网络 信道可用性 动态源路由协议 路由维护机制 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]