J4 ›› 2009, Vol. 27 ›› Issue (05): 452-.

• 论文 • 上一篇    下一篇

基于统计信息与多队列的CR动态频谱分配

谢显中|后茂森   

  1. 重庆邮电大学 计算机网络与通信信息产业部重点实验室, 重庆 |400065)
  • 出版日期:2009-09-20 发布日期:2009-11-03
  • 通讯作者: 谢显中(1966— ),男,四川通江人,重庆邮电大学教授,博士,主要从事无线通信传输技术,传输预处理、协作通信和感知无线电研究, E-mail:xiexianzhong@tomcom
  • 作者简介:谢显中(1966—〓),男,四川通江人,重庆邮电大学教授|博士|主要从事无线通信传输技术|传输预处理、协作通信和感知无线电研究,(Tel)8613708369531(Email)xiexianzhong@tomcom
  • 基金资助:

    国家自然科学基金资助项目(60872037);重庆市自然科学基金资助项目(2008BB2411)

Dynamic Spectrum Allocation Scheme Based on Statistical  Information and MultiQueue in CR Networks

XIE Xian-zhong|HOU Mao-sen   

  1. Ministry of Information Industry Key Lab on Computer Network and Communication, Chongqing University of Posts and Telecommunications, Chongqing 400065, China
  • Online:2009-09-20 Published:2009-11-03

摘要:

现有动态频谱分配方法主要着眼于频谱分配的无冲突性、以及频谱利用率最大化等方面,没有充分考虑动态频谱的统计信息、用户不同业务需要不同带宽以及实时性-非实时需要等问题。为此,提出一种基于统计信息与多队列的CR动态频谱分配,并将一般独占分配方法与频谱池共享方法进行比较。仿真结果表明,在集中控制的情况下,频谱池共享能保证较好的分配公平性、频谱切换性和提供较高的系统吞吐性。

关键词: 感知无线电, 动态频谱分配, 频谱池, 队列, 统计信息

Abstract:

Dynamic spectrum allocation is a key technigue of a CR(Cognitive Radio) system. The existing spectrum allocation method focuses on the conflictfree allocation to maximize spectrum utilization, etc. There is no full account of the statistical information of dynamic spectrum, users of different business do not need different bandwidth and realtimenonrealtime needs. The dynamic spectrum allocation for CR based on statistical information and multiqueue has been studied. Compared the exclusive allocation methods with spectrum pool sharing methods, the simulation results show that in the case of centralized control, spectrum pool sharing ensures better fairness and spectrum switching provides higher throughput of the system.

Key words: cognitive radio, dynamic spectrum allocation, spectrum pool, queue, statistical information

中图分类号: 

  • TN92