Abstract
Distributed Coordination Function (DCF) is the basis of the IEEE 802.11 WLAN MAC protocols. This paper proposes a scheme named DCF+, which can be regarded as an option to DCF, to enhance the performance of reliable transport protocol over WLAN. To analyze the performance of DCF and DCF+, this paper also introduces an analytical model to compute the saturated throughput performance of WLAN. Compared with other models, this model is more accurate, which is verified by elaborate simulations. Moreover, DCF+ is, shown to be able to improve the performance of TCP over WLAN by both modeling and simulations.
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This work is supported by the Research Fund for the Doctoral Program of Higher Education (RFDP) (Grant No.20010013003) and NOKIA-BUPT Advanced Network Project.
WU HaiTao was born in 1976 and received his Bachelor degree in telecommunication engineering from the Beijing University of Posts and Telecommunications (BUPT) in 1998. He is currently a Ph.D. candidate of the National Laboratory of Switching Technology and Telecommunication Networks at BUPT. His research interests are QoS, TCP/IP, differentiated services, wireless networks.
CHENG ShiDuan is a professor and Ph.D supervisor. She was born in 1940 and graduated from BUPT in 1963. Since then she has been working at BUPT. From 1984 to 1987 she joined Alcatel Bell Telephone, Belgium as a visiting scholar. From 1992 to 1998 she was the head of the Switching and Network Expert Group in 863 Program, a National High-Tech Research and Develop Plan organized by the Ministry of Science and Technology of China. She has published more than 100 papers and several books in the field of telecom. She is currently the director of Broadband Networks Research Center in Computer College of BUPT. Her research interests cover ISDN, ATM, TCP/IP, switching software, protocol engineering, network performance, QoS, security and survivability.
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Wu, H., Cheng, S. DCF+: An enhancement for reliable transport protocol over WLAN. J. Comput. Sci. & Technol. 18, 201–209 (2003). https://doi.org/10.1007/BF02948885
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DOI: https://doi.org/10.1007/BF02948885