A COMPARATIVE STUDY OF 802.11 AND 802.11E WIRELESS LAN STANDARDS

Fedoua Didi, Houda Labiod, Guy Pujolle

Abstract

Quality of service (QoS) is a key problem in wireless environments where bandwidth is scarce and channel conditions are time varying and sometimes highly loss. Although IEEE 802.11 wireless LAN (WLAN) is the most widely used WLAN standard today, and the upcoming IEEE 802.11e QoS enhancement standard exists and introduces the QoS for supporting multimedia applications. This paper compares the propositions of standard IEEE 802.11e with the standard IEEE 802.11 without QoS, a simulation of these standards is performed by using the NS simulator. A discussion is presented in detail using simulation-based evaluations and we let us confirm the QoS of IEEE 802.11e compared to IEEE 802.11, but we have detected some weaknesses of 802.11e. It starves the low priority traffic in case of high load, and leads to higher collision rates, and did not make a good estimate of weight of queues, so there is an unbalance enters the flows with high priorities. We finish with a conclusion.

References

  1. IEEE 802.11 WG, Reference number ISO/IEC 8802- 11:1999(E) Std 802.11, 1999 edition International Standard {for} Information Technology - Telecommunications and information exchange between systems-Local and metropolitan area network-Specific Requirements - Part 11:Wirelesss LAN Medium Access Control (MAC) and Physical Layer (PHY) specifications, 1999.
  2. IEEE 802.11 WG, Draft Supplement to Standard for Telecommunications and information exchange between systems-Local and metropolitan area network-Specific Requirements - Part 11: Wirelesss LAN Medium Access Control (MAC) and Physical Layer (PHY) specifications. Enhancements for QoS, IEEE 802.11e/Draft 4.2, February 2003.
  3. Aad I, Castelluccia C. Differentiation mechanisms for IEEE 802.11, Proc. IEEE Infocom 2001, Anchorage, Alaska, USA, April 2001;1:209-218.
  4. Anelli A, Horlait C. Manuel NS version 2 : Principes de conception et d'utilisation . UPMC- LIP6.
  5. Bonin J M. Introduction à la simulation d'un réseau à travers NS. Access date 2002.
  6. Hung P. NS2 Tutorial .14 Juin 1999
  7. Carta A. A Network Topology Presentation Tool. Project Report, UC Berkeley 1993
  8. Benveniste M, Chesson G, Hoeben M, Singla A, et. Al. EDCF proposed draft text. IEEE 802.11e working document 802.11-01/131r1, March 2001.
  9. Lindgren A, Almquist A and Schelen O. Evaluation of quality of services schemes for IEEE 802.11 wireless LANs. Proc. Of the 26th Annual IEEE Conference on local computer networks (LCN 2001), Tampa, Florida, USA,November 15-16, 2001; 348-351.
  10. Qiang Ni, Romdhani L, Turletti T. A Survey of QoS Enhancements for IEEE 802.11 Wireless LAN. Et al. Journal of Wireless Communications and Mobile Computing, Wiley. 2004: Volume 4, Issue 5: pp.547- 566.
Download


Paper Citation


in Harvard Style

Didi F., Labiod H. and Pujolle G. (2006). A COMPARATIVE STUDY OF 802.11 AND 802.11E WIRELESS LAN STANDARDS . In Proceedings of WEBIST 2006 - Second International Conference on Web Information Systems and Technologies - Volume 1: WEBIST, ISBN 978-972-8865-46-7, pages 133-139. DOI: 10.5220/0001238601330139


in Bibtex Style

@conference{webist06,
author={Fedoua Didi and Houda Labiod and Guy Pujolle},
title={A COMPARATIVE STUDY OF 802.11 AND 802.11E WIRELESS LAN STANDARDS},
booktitle={Proceedings of WEBIST 2006 - Second International Conference on Web Information Systems and Technologies - Volume 1: WEBIST,},
year={2006},
pages={133-139},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0001238601330139},
isbn={978-972-8865-46-7},
}


in EndNote Style

TY - CONF
JO - Proceedings of WEBIST 2006 - Second International Conference on Web Information Systems and Technologies - Volume 1: WEBIST,
TI - A COMPARATIVE STUDY OF 802.11 AND 802.11E WIRELESS LAN STANDARDS
SN - 978-972-8865-46-7
AU - Didi F.
AU - Labiod H.
AU - Pujolle G.
PY - 2006
SP - 133
EP - 139
DO - 10.5220/0001238601330139