DocumentCode :
1117324
Title :
A new call admission control method for providing desired throughput and delay performance in IEEE802.11e wireless LANs
Author :
Zhu, Jiang ; Fapojuwo, Abraham O.
Author_Institution :
Sch. fo Electr. Sci. & Eng., Nat. Univ. of Defense Technol., Changsha
Volume :
6
Issue :
2
fYear :
2007
Firstpage :
701
Lastpage :
709
Abstract :
The draft IEEE 802.11e standard aims at providing quality of service (QoS) support in 802.11 wireless local area networks (WLANs). Enhanced distributed coordination function (EDCF), being the fundamental medium access control mechanism in IEEE 802.11e, can only provide service differentiation but offers no QoS guarantees. While service differentiation does not perform well under high traffic load conditions, call admission control (CAC) becomes necessary in order to provide and support the QoS of existing calls. In this paper, we first analyze the saturation throughput and mean access delay performance of differentiated service provided by EDCF. Specifically, we investigate the impact of transmission opportunity (TXOP) and wireless channel errors on the performance of the EDCF. Based on the results from this analysis, we propose a new CAC algorithm that provides the desired throughput and access delay performance. Simulated performance results demonstrate the effectiveness of the proposed CAC algorithm
Keywords :
DiffServ networks; access protocols; delays; quality of service; telecommunication congestion control; wireless LAN; wireless channels; CAC; IEEE 802.11e; QoS; call admission control method; enhanced distributed coordination function; mean access delay performance; medium access control mechanism; quality of service; service differentiation; transmission opportunity; wireless LAN; wireless channel; wireless local area networks; Bandwidth; Call admission control; Delay; Media Access Protocol; Performance analysis; Quality of service; Telecommunication traffic; Throughput; Wireless LAN; Wireless communication;
fLanguage :
English
Journal_Title :
Wireless Communications, IEEE Transactions on
Publisher :
ieee
ISSN :
1536-1276
Type :
jour
DOI :
10.1109/TWC.2007.05370
Filename :
4100178
Link To Document :
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