认知无线电中基于频谱聚合的全局比例公平调度算法

殷聪; 谭学治; 马琳; 于洋

doi:10.7498/aps.63.118402

摘要

针对认知无线电系统中认知用户在利用频谱聚合技术时出现的调度不公平问题，提出了一种基于频谱聚合的全局比例公平调度算法. 在比例公平调度的基础上，结合频谱聚合技术的特点，引入了频谱聚合的跨度与认知用户剩余数据队列长度这两个参量，使认知用户在聚合可用频谱的范围内，最大限度的保证吞吐量公平性. 仿真结果表明，相比于局部比例公平调度算法和最大载干比调度算法，该算法在公平性指数和系统服务时间上更占优势，同时具有较低的吞吐量抖动，从而有效地提高系统容量和系统效率，确保认知用户之间对系统资源的公平利用.

关键词:

Abstract

In a cognitive radio system, it is still a problem that resource scheduling among secondary users (SUs) is distributed unfairly when spectrum aggregation technology is involved to support high-speed data transmission. A global proportional fair scheduling algorithm is proposed based on spectrum aggregation to solve the problem. This paper focuses on the relation between the fairness for SUs and spectrum aggregation. Throughput fairness can be guaranteed as much as possible after considering two parameters, the span of spectrum aggregation and the remaining data queue length of SUs. Simulation results show that the proposed scheduling algorithm takes advantage of fairness and the delay of system service as compared with the other two scheduling algorithms, max C/I and partial proportional fairness. Meanwhile, it is shown that the proposed scheduling algorithm has lower throughput shake to make sure of fairness among SUs and high efficiency of system.

Keywords:

cognitive radio /
spectrum aggregation /
proportional fairness scheduling algorithm /
throughput fairness

作者及机构信息

1.
哈尔滨工业大学, 通信技术研究所, 哈尔滨 150080

基金项目: 国家自然科学基金（批准号：61071104）和国家科技重大专项（批准号：2011ZX03004-004）资助的课题.

Authors and contacts

1.
Communication Research Center, Harbin Institute of Technology, Harbin 150080, China

Funds: Project supported by the National Natural Science Foundation of China (Grant No. 61071104), and the National Science and Technology Major Project of the Ministry of Science and Technology of China (Grant No. 2011ZX03004-004).

参考文献

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施引文献

[1]	Iwamura M, Etemad K, Fong M H, Nory R, Love R 2010 IEEE Communications Magazine 48 60
[2]	Shen Z K, Papasakellariou A, Montojo J, Gerstenberger D, Xu F L 2012 IEEE Communications Magazine 50 122
[3]	Liu Y, Peng Q Z, Shao H Z, Peng Q H, Wang L 2013 Acta Phys. Sin. 62 078406 (in Chinese)[刘允, 彭启琮, 邵怀宗, 彭启航, 王玲 2013 物理学报 62 078406]
[4]	Jiang H, Liu C B, Wu C 2013 Acta Phys. Sin. 62 038804 (in Chinese)[江虹, 刘从彬, 伍春 2013 物理学报 62 038804]
[5]	Yuan G X, Zhang X, Wang W B, Yang Y 2010 IEEE Communications Magazine 48 88
[6]	Galaviz G, Covarrubias D H, Andrade A G 2011 IEEE Communications Letters 15 1202
[7]	Pedersen K I, Frederiksen F, Rosa C, Nguyen H, Garcia L G U, Wang Y Y 2011 IEEE Communications Magazine 49 89
[8]	Rui Y, Cheng P, Li M Q, Zhang Q T, Guizani M 2013 IEEE Wireless Communications 20 101
[9]	Li J P, Tan Z H, Tao C, Xu S Y 2010 International Conference on Wireless Communications and Signal Processing Su Zhou, Oct. 21-23, 2010 p1
[10]	Zu Y X, Zhou J 2012 Chin. Phys. B 21 019501
[11]	Zhang X J, Lu Y, Tian F, Sun Z X, Cheng X F 2014 Acta Phys. Sin. 63 078401 (in Chinese)[张学军, 鲁友, 田峰, 孙知信, 成谢锋 2014 物理学报 63 078401]
[12]	Zheng S L, Yang X N 2012 Acta Phys. Sin. 61 148402 (in Chinese)[郑仕链, 杨小牛 2012 物理学报 61 148402]
[13]	Chai Z Y, Zheng L P, Zhu S F 2012 Acta Phys. Sin. 61 118801 (in Chinese)[柴争义, 郑丽萍, 朱思峰 2012 物理学报 61 118801]
[14]	Zu Y X, Zhou J 2011 Acta Phys. Sin. 60 079501 (in Chinese)[俎云霄, 周杰 2011 物理学报 60 079501]
[15]	Zhou H, Fan P Y, Letaief K B, Xia X G 2010 IEEE International Conference on Communications Cape Town, May 23-27, 2010 p1
[16]	Shi H, Prasad R, Onur E, Niemegeers I 2013 IEEE Communications Surveys & Tutorials 99 1
[17]	Kwan R, Leung C, Zhang J 2009 IEEE Signal Processing Letters 16 461
[18]	Attar A, Devroye N, Li H M, Leung V C M 2010 7th International Symposium on Wireless Communication Systems York, Sept. 19-22, 2010 p1041
[19]	Zhou H, Fan P Y, Li J 2011 IEEE Trans. on Vehicular Technology 60 1867
[20]	Almatarneh R K, Ahmed M H, Dobre O A 2010 Vehicular Technology Conference Fall Ottawa ON, Sept. 6-9, 2010 p1
[21]	Girici T, Zhu C X, Agre J R, Ephremides A 2010 Journal of Communications and Networks 12 30
[22]	Wang X, Cai L 2013 IEEE Trans. on Wireless Communications 12 1584
[23]	Ren Z Y, Chen S Z, Hu B, Ma W G 2013 IEEE Communications Letters 17 868
[24]	Wang B, Zhao D M 2010 IEEE Trans. on Wireless Communications 9 1150
[25]	Jeon J H, Lim J T 2012 IET Communications 6 2816
[26]	Matthew A, Krishnan K, Kavita R, Alexander S, Phil W 2001 IEEE Communications Magazine 39 150
[27]	Wang Q, Xu D, Xu J 2006 25th International IPCCC Phoenix, April. 10-12, 2006 p97

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