DocumentCode :
1175023
Title :
Performance analysis of priority schemes for IEEE 802.11 and IEEE 802.11e wireless LANs
Author :
Xiao, Yang
Author_Institution :
Comput. Sci. Dept., Univ. of Memphis, TN, USA
Volume :
4
Issue :
4
fYear :
2005
fDate :
7/1/2005 12:00:00 AM
Firstpage :
1506
Lastpage :
1515
Abstract :
The IEEE 802.11 distributed coordination function (DCF) enables fast installation with minimal management and maintenance costs, and is a very robust protocol for the best effort service in wireless medium. However, the current DCF is unsuitable for real-time applications. This paper studies backoff-based priority schemes for IEEE 802.11 and the emerging IEEE 802.11e standard by differentiating the minimum backoff window size, the backoff window-increasing factor, and the retransmission limit. An analytical model is proposed to derive saturation throughputs, saturation delays, and frame-dropping probabilities of different priority classes for all proposed priority schemes. Simulations are conducted to validate analytical results. The proposed priority schemes can be easily implemented, and the results from this paper are beneficial in designing good priority parameters.
Keywords :
DiffServ networks; computer network management; distributed algorithms; probability; protocols; telecommunication services; wireless LAN; IEEE 802.11e standard; backoff window-increasing factor; backoff-based priority scheme; best effort service; enhanced distributed coordination function; frame-dropping probability; network management; retransmission limit; saturation delay; service differentiation; wireless LAN; Analytical models; Counting circuits; Data communication; Delay; Local area networks; Performance analysis; Quality of service; Space stations; Throughput; Wireless LAN; Enhanced distributed coordination function (EDCF); IEEE 802.11e; priority; service differentiation;
fLanguage :
English
Journal_Title :
Wireless Communications, IEEE Transactions on
Publisher :
ieee
ISSN :
1536-1276
Type :
jour
DOI :
10.1109/TWC.2005.850328
Filename :
1512111
Link To Document :
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