[1] Hu Jing, Shen LianfengSong Tiecheng,. QoS-based MAC protocol for cognitive radio networks [J]. Journal of Southeast University (English Edition), 2012, 28 (4): 375-379. [doi:10.3969/j.issn.1003-7985.2012.04.001]

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QoS-based MAC protocol for cognitive radio networks()

基于QoS的认知无线电网络MAC协议

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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:

28

Issue:

2012 4

Page:

375-379

Research Field:

Information and Communication Engineering

Publishing date:

2012-12-30

Info

Title:

QoS-based MAC protocol for cognitive radio networks

基于QoS的认知无线电网络MAC协议

Author(s):

Hu Jing;  Shen LianfengSong Tiecheng

National Mobile Communications Research Laboratory, Southeast University, Nanjing 210096, China

胡静;  沈连丰;  宋铁成

东南大学移动通信国家重点实验室, 南京210096

Keywords:

quality of service(QoS);  cognitive radio;  media access control(MAC);  channel map;  Markov chain

服务质量;  认知无线电;  媒体接入控制;  信道映射;  马尔科夫链

PACS:

TN92

DOI:

10.3969/j.issn.1003-7985.2012.04.001

Abstract:

In order to improve the throughput performance of the secondary users(SUs)in the cognitive radio(CR)environment, a quality of service(QoS)based media access control(MAC)protocol is proposed. In this protocol, the CR node maps the channel state as a vector, and the transmitter and the receiver obtain the final channel map through an AND operation to prepare for an optional channel set. Data from the upper application layer are classified into two priority levels according to the QoS requirement. The data of each level relate to different contention windows so that the priority of real time data can be guaranteed. A two-dimensional discrete-time Markov chain is utilized to evaluate the system performance, and mathematical expressions of the system throughput are derived. Simulation results show that compared with the IEEE 802.11 distributed coordination function(DCF), the proposed MAC protocol can achieve higher throughput.

为提高认知环境中次用户的吞吐量性能, 提出了一种基于QoS的MAC协议.认知节点将信道状态映射为向量, 收端与发端通过“与”操作得到最终的信道映射, 并获得备选信道集合.上层应用程序传来的数据根据QoS要求被划分为2个优先级, 每种级别的数据对应不同的竞争窗口, 从而保证了实时数据具有较高的优先级.使用二维离散时间马尔科夫链分析了系统的性能并推导出系统吞吐量的数学表达式.仿真结果证实, 与IEEE 802.11 DCF相比, 所提协议有助于提高系统吞吐量.

References:

[1] Federal Communications Commission(FCC). Spectrum policy task force report, ET Docket No.02-135 [R]. Washington DC, USA: FCC, 2002.
[2] Cormio C, Chowdhury K R. A survey on MAC protocols for cognitive radio networks[J]. Ad Hoc Networks, 2009, 7(7):15-1329.
[3] Lien S-Y, Tseng C-C, Chen K-C. Carrier sensing based multiple access protocols for cognitive radio networks[C]//IEEE International Conference on Communications(ICC). Beijing, China, 2008:3208-3214.
[4] Stevenson C, Chouinard G, Lei Z D, et al. IEEE 802.22: the first cognitive radio wireless regional area network standard [J]. IEEE Communications Magazine, 2009, 47(1): 130-138.
[5] Nan H, Hyon T-I, Yoo S-J. Distributed coordinated spectrum sharing MAC protocol for cognitive radio[C]//IEEE DySPAN 2007. Chicago, USA, 2007:240-249.
[6] Kondareddy Y R, Agrawal P. Synchronized MAC protocol for multi-hop cognitive radio networks[C]//IEEE International Conference on Communications(ICC). Beijing, China, 2008:3198-3202.
[7] Zhao Cuina, Hu Jing, Shen Lianfeng. A MAC protocol of cognitive networks based on IEEE 802.11 [C]//12th IEEE International Conference on Communication Technology(ICCT). Nanjing, China, 2010: 1133-1136.
[8] IEEE 802.11 Working Group. 802.11—97 IEEE standard for wireless LAN medium access control(MAC)and physical layer(PHY)specifications[S]. IEEE Computer Society, 1997.
[9] Ghaboosi K, Khalaj B H, Yang Xiao, et al. Modeling IEEE 802.11 DCF using parallel space-time Markov chain [J]. IEEE Transactions on Vehicular Technology, 2008, 57(4): 2404-2413.

Memo

Memo:

Biography: Hu Jing(1975—), female, doctor, associate professor, louy@seu.edu.cn.
Foundation items: The National Science and Technology Major Project(No.2010ZX03006-002-01), the National Basic Research Program of China(973 Program)(No.2011CB302905), the Science and Technology Support Program of Jiangsu Province(No.BE2011177)
Citation: Hu Jing, Shen Lianfeng, Song Tiecheng.QoS-based MAC protocol for cognitive radio networks[J]. Journal of Southeast University(English Edition), 2012, 28(4):375-379.[doi:10.3969/j.issn.1003-7985.2012.04.001]

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