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IEEE 802.11e Contention-Based Channel Access (EDCF) Performance Evaluation
Choi, S. and DelPrado, J. and Mangold, Stefan
Department of Communication Networks (ComNets), Faculty 6, RWTH Aachen University Kontakt: publications@comnets.rwth-aachen.de
In Proceedings of the ICC 2003, Anchorage, AL, USA, 2003.
Publication Date: May, 2003
On page(s):
ISBN:
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IEEE 802.11e Medium Access Control (MAC) is an emerging supplement to the IEEE 802.11 Wireless Local Area Network (WLAN) standard to support Quality-of-Service (QoS). The 802.11e MAC is based on both centrally-controlled and contention-based channel accesses. In this paper, we evaluate the contention-based channel access mechanism, called enhanced distributed coordination function (EDCF), in comparison with the 802.11 legacy MAC. The EDCF provides differentiated channel access to frames with different priorities. We also consider an optional feature of the EDCF, called contention-free burst (CFB), which allows multiple MAC frame transmissions during a single transmission opportunity (TXOP). Through our simulation study, we conclude that the EDCF can provide differentiated channel access for different traffic types. Furthermore, the CFB is found to enhance the EDCF performance by increasing the overall system throughput and achieving more acceptable streaming quality in terms of frame losses and delays.
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@INPROCEEDINGS{ChoiDelPradoShankarMangoldICC2,
AUTHOR = {Choi, S. and DelPrado, J. and Mangold, S.},
TITLE = {IEEE 802.11e Contention-Based Channel Access (EDCF) Performance
Evaluation},
JOURNAL = {Proceedings of the ICC 2003},
YEAR = {2003},
MONTH = {May},
VOLUME = {0},
ADDRESS = {Anchorage, AL, USA},
AFFILIATION = {Department of Communication Networks (ComNets), Faculty 6, RWTH Aachen University},
URL = {http://www.comnets.rwth-aachen.de}
}
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| | Letzte Änderung: 26.11.2008 11.35 | |
