认知无线电网络中基于包调度算法的主动频谱切换

doi:10.3969/j.issn.0372-2112.2013.08.028

电子学报 ›› 2013, Vol. 41 ›› Issue (8): 1628-1633.DOI: 10.3969/j.issn.0372-2112.2013.08.028

认知无线电网络中基于包调度算法的主动频谱切换

马彬^1,2, 廖晓峰¹, 谢显中²

1. 重庆大学计算机学院输配电装备及系统安全与新技术国家重点实验室, 重庆 400044;
2. 重庆邮电大学计算机学院重庆市计算机网络与通信技术重点实验室, 重庆 400065

收稿日期:2012-05-10 修回日期:2013-05-10 出版日期:2013-08-25
- 作者简介:
- 马彬 男,1978年出生,四川人.博士生,重庆邮电大学副教授,主要研究方向为认知无线电网络、异构无线网络、不确定智能算法等. E-mail:mab_cqupt@sina.com 廖晓峰 男,1964年出生,四川人.重庆大学教授,博士生导师,长江学者.主要研究方向为人工神经网络、混沌和无线网络等.
- 基金资助:
- 国家自然科学基金 (No.60973114,No.61170249,No.61271259); 重庆市教委科学技术研究 (No.KJ120529,No.KJ130536); 重庆市计算机网络与通信技术重点实验室基金 (No.CY-CNCL-2010-02)

Proactive Spectrum Handover Based on Packet Scheduling Algorithm in Cognitive Radio Networks

MA Bin^1,2, LIAO Xiao-feng¹, XIE Xian-zhong²

1. State Key Laboratory of Power Transmission Equipment & System Security and New Technology, College of Computer Science, Chongqing University, Chongqing 400044, China;
2. Chongqing Key Laboratory of Computer Network and Communication Technology of China, College of Computer Science and Technology, Chongqing University of Posts and Telecommunications, Chongqing 400065, China

Received:2012-05-10 Revised:2013-05-10 Online:2013-08-25 Published:2013-08-25
- Supported by:
- National Natural Science Foundation of China (No.60973114, No.61170249, No.61271259); Science and Technology Research of Chongqing Municipal Education Commission (No.KJ120529, No.KJ130536); Fund of Chongqing Key Laboratory of Computer Network and Communication Technology (No.CY-CNCL-2010-02)

摘要/Abstract

摘要： 认知无线电网络中,主用户出现在自己的授权频段,但被次用户占用,此时次用户进行频谱切换.主动频谱切换机制是一种可以提高网络的带宽利用率,同时降低丢包率的方法.基于一个有效的包调度算法,提出一个主动频谱切换机制,以期减少频谱切换发生时的不可用信道.该包调度算法有效地集成了两个算法:频谱空洞填充算法和包迁移算法,来减少丢包率和带宽碎片.实验仿真结果验证了该主动频谱切换机制的有效性.

关键词: 认知无线电网络, 频谱切换, 包调度

Abstract: In cognitive radio networks,spectrum handover occurs when a secondary user changes frequency due to the appearance of a primary user.Proactive spectrum handover may result in aggraded bandwidth utilization performance and degraded packet loss probability.Here,we develop a proactive spectrum handover mechanism by using an efficient packet scheduling algorithm,to reduce unusable channel.It effectively integrates two algorithms:spectrum hole filling algorithm and packet migration algorithm,to minimize packet loss probability and reduce the bandwidth fragment.The efficiency of the mechanism is validated by simulation results.

Key words: cognitive radio networks, spectrum handover, packet scheduling

中图分类号:

TN929.5

马彬, 廖晓峰, 谢显中. 认知无线电网络中基于包调度算法的主动频谱切换[J]. 电子学报, 2013, 41(8): 1628-1633.

MA Bin, LIAO Xiao-feng, XIE Xian-zhong . Proactive Spectrum Handover Based on Packet Scheduling Algorithm in Cognitive Radio Networks[J]. Acta Electronica Sinica, 2013, 41(8): 1628-1633.

参考文献

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认知无线电网络中基于包调度算法的主动频谱切换

Proactive Spectrum Handover Based on Packet Scheduling Algorithm in Cognitive Radio Networks

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