DocumentCode :
3004728
Title :
IEEE 802.11 wireless LAN: capacity analysis and protocol enhancement
Author :
Cali, F. ; Conti, M. ; Gregori, E.
Author_Institution :
CNR, Pisa, Italy
Volume :
1
fYear :
1998
fDate :
29 Mar-2 Apr 1998
Firstpage :
142
Abstract :
In WLAN the medium access control (MAC) protocol is the main element for determining the efficiency in sharing the limited communication bandwidth of the wireless channel. This paper focuses on the efficiency of the IEEE 802.11 standard for wireless LANs. Specifically, we derive an analytical formula for the protocol capacity. From this analysis we found (i) the theoretical upper bound of the IEEE 802.11 protocol capacity; (ii) that the standard can operate very far from the theoretical limits depending on the network configuration; (iii) that an appropriate tuning of the backoff algorithm can drive the IEEE 802.11 protocol close to its theoretical limits. Hence we propose a distributed algorithm which enables each station to tune its backoff algorithm at run-time. The performances of the IEEE 802.11 protocol, enhanced with our algorithm, are investigated via simulation. The results indicate that the enhanced protocol is very close to the maximum theoretical efficiency
Keywords :
IEEE standards; access protocols; channel capacity; distributed algorithms; telecommunication standards; wireless LAN; IEEE 802.11 standard; IEEE 802.11 wireless LAN; analytical formula; backoff algorithm tuning; bandwidth sharing; capacity analysis; distributed algorithm; maximum theoretical efficiency; medium access control protocol; network configuration; protocol capacity; protocol enhancement; simulation; upper bound; wireless channel; Access protocols; Algorithm design and analysis; Bandwidth; Distributed algorithms; Electronic mail; Media Access Protocol; Runtime; Upper bound; Wireless LAN; Wireless application protocol;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
INFOCOM '98. Seventeenth Annual Joint Conference of the IEEE Computer and Communications Societies. Proceedings. IEEE
Conference_Location :
San Francisco, CA
ISSN :
0743-166X
Print_ISBN :
0-7803-4383-2
Type :
conf
DOI :
10.1109/INFCOM.1998.659648
Filename :
659648
Link To Document :
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