吉林大学学报(工学版) ›› 2016, Vol. 46 ›› Issue (2): 663-670.doi: 10.13229/j.cnki.jdxbgxb201602049

• 论文 • 上一篇    下一篇

基于邻居节点分组的认知无线电Ad Hoc网络公共控制信道分配算法

杨立标, 赵洪林, 贾敏   

  1. 哈尔滨工业大学 通信技术研究所,哈尔滨 150001
  • 收稿日期:2014-07-14 出版日期:2016-02-20 发布日期:2016-02-20
  • 通讯作者: 赵洪林(1969-),教授,博士生导师.研究方向:无线通信,扩频通信.E-mail:hlzhao@hit.edu.cn E-mail:libiao_yang@126.com
  • 作者简介:杨立标(1980-),男,博士研究生.研究方向:认知无线电Ad Hoc网络.E-mail:libiao_yang@126.com
  • 基金资助:
    国家自然科学基金项目(61201143); 中国空间技术研究院ITS基金项目(F-W-YY-2013-016); 中央高校基本科研业务费专项项目(201309)

Neighboring group control channel allocation or cognitive radio Ad Hoc network

YANG Li-biao, ZHAO Hong-lin, JIA Min   

  1. Communication Research Center, Harbin Institute of Technology, Harbin 150001,China
  • Received:2014-07-14 Online:2016-02-20 Published:2016-02-20

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摘要： 针对目前认知无线电Ad Hoc网络中公共控制信道分配在网络拓扑变化下性能差以及对主要用户活动鲁棒性差等问题,提出了一种基于邻居节点分组的公共控制信道分配算法.该方法根据认知无线电Ad Hoc网络频谱异构性对认知节点及其1跳邻居节点进行分组操作,然后利用最大边二分团建立起分组认知节点与可用信道集的映射关系,最后将控制信息时延和控制信道吞吐量联合起来构成可用控制信道效用函数,进而选择具有最大效用函数值的可用控制信道作为邻居节点组的最优控制信道.仿真结果表明:该算法性能优越,在认知节点密度和主用户数量增加时,能优化公共控制信道选择并有效降低业务传输时延,较好地适应了认知网络信道可用性空-时变换特性.

关键词: 通信技术, 公共控制信道, 认知Ad Hoc网络, 频谱异构性, 最大边二分团

Abstract: Current Common Control Channel (CCC) allocation in Cognitive Radio (CR) Ad Hoc network possesses several shortcomings, such as poor allocation performance in high fluctuating topology structure and poor robustness to the primary activities. To overcome these shortcomings, a novel neighboring group based CCC allocation algorithm is proposed. First, the CR node and its 1-hop neighbors are grouped based the spectrum heterogeneity. Then, the mapping from the grouped CR nodes and the idle CCC set is formulated as a maximum edge biclique problem. Finally, a novel utility function for each available CCC selection is established according to the control massage delay and its throughput; and the CCC in the set with the largest utility function value is selected as the optimal CCC. The algorithm has the advantages of robustness to primary activities and facility in dedicating control channel allocation by the agile grouping of local nodes. Simulation results show that the proposed algorithm is effective in reducing the normalized end-to-end delay when CR node density and primary user number increase; and it adapts to spatial-temporal variation in spectrum availability.

Key words: communication technology, common control channel (CCC), cognitive radio Ad Hoc networks, spectrum heterogeneity, maximum edge biclique

中图分类号: 

  • TN915
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