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Improving MAC Layer Fairness in Multi-Hop and Communication Network for VANET

D.P. Choudhari, Dr.S.S. Dorle

Abstract


The IEEE 802.11 is a standard for wireless LANS and
wireless multi-hop adhoc networks. But the fact is that the
performance of IEEE 802.11 drops dramatically in terms of
throughput and delay as the network traffic goes up particularly when the station reaches to the saturation state. IEEE 802.11 supports two modes of operation: Distributed Coordination Function (DCF) and Point Coordination Function (PCF).This paper presents the unfairness of IEEE 802.11 protocol when deployed in multi-hop networks scenario. The basic method to access IEEE 802.11 MAC Layer is DCF mode and it is based on CSMA/CA. In this paper we have shown that
by the use of simple distributed algorithm that can be placed in this case to approximate ideal scheduler like round robin so as to provide the fair access to all flows in the network. So from the results of simulation it is clear that this approach proves to be best on the fairness standard. In addition by reducing the number of collisions we have also increased the throughput.


Keywords


Multi-hop Networks, DCF, Throughput, CSMA/CA

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References


R. Kahn, "Advances in Packet Radio Technology",Proceedings of the

IEEE, 66(11):1468-1496, 1978.

Chakrabarthi S., Mishra A., "QoS issues in ad hoc wireless networks",

communications magzine, IEEE, volume 39, issue 2, Feb 2001,

pp.142-148.

Navid Nikaein, Christian Bonnet, "A glance at quality of service models

in mobile ad hoc networks", in: Proceedings of DNAC 2002:

thConference of New Architectures for Communications, Paris,

France,2002.

Dmitri D., Perkins, Herman D. Hughes, "A survey on quality of service

support in wireless ad hoc networks", Journal of Wireless

Communication and Mobile Computing (WCMC), 2 (5) (2002) 503-513.

Performance Analysis of the IEEE 802.11 MAC and Physical Layer

ProtocolMohammad Hossein Manshaei, Gion Reto Cantieni, Chadi

Barakat, and Thierry Turletti Institute National de Recherche en

Informatique Automatique (INRIA) 2004 route des Lucioles,

Sophia-Antipolis, France 06902

Improving MAC Layer Fairness in Multi-Hop802.11 Networks

Engineering, Software Engineering and Technology Labs Indian Institute

of Technology, Guwahati, Infosys Technologies Ltd North-Guwahati-

, Assam, India. Bangalore- 560100, India.

Performance Analysis and Enhancement for IEEE 802.11 MAC Protocol

Yunli Chen, Qing-An Zeng, and Dharma P. Agrawal Center for

Distributed and Mobile Computing, Department of ECECS University of

Cincinnati, OH 45221-0030

Performance of Wireless LANs Based on IEEE 802.1 1 MAC Protocols

Hoiigqiang Zliai and Yugoang Fang Department of Electrical an

Coinputer Engineering University of Florida. Gainesville. Florida.

Performance Research And Simulation Analysis Of The Mac Layer

Protocols In Wireless Sensor Networks Qicai Yu Jianping Xing Yan Zhou

Lei Zhou School of Information Science and Engineering, Shandong

University Shandong, Jinan, 250100 China

MAC schemes for ad-hoc wireless networks V. Loscrì D.E.I.S.

Department, University of Calabria via P. Bucci, 42/c 87036 Rende, CS,

Italy

End-to-End Flow Fairness over IEEE 802.11-based Wireless Mesh

Networks Ashish Raniwala Pradipta De Srikant Sharma Rupa Krishnan

Tzi-cker Chiueh Department of Computer Science, Stony Brook

University Stony Brook, NY 11794-4400, USA

H. Su and X. Zhang,“Clustering-based multichannel MAC protocols for

QoS provisioning over vehicular ad hoc networks,”IEEE Transactions on

Vehicular Technology, vol. 56, no. 6 Part 1, pp. 3309–3323, 2007.

Q. Zhao, L. Tong, A. Swami and Y. Chen, Decentralized Cognitive MAC

for Opportunistic Spectrum Access in Ad Hoc Networks: Journal on

Selected Areas in Communications,Vol. 25, No. 3, Apr. 2007.

M. Gast, 802.11 wireless networks: the definitive guide. O’Reilly Media,

F. Yu and S. Biswas, “A self-organizing MAC protocol for DSRC based

vehicular ad hoc networks,” in 27th International Conference on

Distributed Computing Systems Workshops, 2007.ICDCSW’07,

,pp.88–88.

F. Akyildiz,W.Y. Lee,M. C.Vuran and S. Mohanty, NeXt generation/

dynamic spectrum access/cognitive radio wireless networks: a survey,

Computer Networks 50 (2006), pp. 2127-2159.

J. Jia, Q. Zhang and X. Shen, HC-MAC: A hardware constrained

cognitive MAC for efficient spectrum management, IEEE Journal on

Selected Areas in Communications, Vol. 26, No. 1, pp. 106-117, Jan.

V. Bharghavan, A. Demers, S. Shenker, L. Zhang, "MACAW: a medium

access protocol for wireless LANs", In: Proceedings of SIGCOMM 94,

, pp. 212-225.

Li Zhifei, "Performance Evaluation and Improvement of IEEE

11MAC Protocol in Wireless Ad-hoc Networks", PhD Thesis,

Nanyang Tech.Univ, Singapore, 2003.


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