DocumentCode
1066370
Title
Enhancement of QoS differentiation over IEEE 802.11 WLAN
Author
Zhao, Liqiang ; Fan, Changxin
Author_Institution
State Key Lab. of ISN, Xidian Univ., Xi´´an, China
Volume
8
Issue
8
fYear
2004
Firstpage
494
Lastpage
496
Abstract
IQD, a distributed coordination function (DCF) with integrated quality of service (QoS) differentiation, is proposed in this letter to enhance QoS over IEEE 802.11 WLAN. DCF does not support any QoS differentiation. Enhanced DCF (EDCF) only supports delay differentiation. IQD can achieve both delay and packet-loss-rate differentiation by differentiating the initial window size and the retry limit. Simulation results show that IQD performs better than DCF and EDCF in enhancing QoS, and the proposed analytical model is valid.
Keywords
delays; packet switching; quality of service; wireless LAN; IEEE 802.11 WLAN; QoS; delay; distributed coordination function; initial window size; integrated quality of service differentiation; packet-loss-rate; Analytical models; Delay; Laboratories; Performance analysis; Protocols; Quality of service; Robustness; Size control; Throughput; Wireless LAN; 02.11; DCF; Distributed coordination function; EDCF; IEEE; QoS; WLAN; enhanced DCF; quality of service;
fLanguage
English
Journal_Title
Communications Letters, IEEE
Publisher
ieee
ISSN
1089-7798
Type
jour
DOI
10.1109/LCOMM.2004.833787
Filename
1324670
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