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Performance enhancement and bandwidth guarantee in IEEE 802.11 wireless LANs

  • Computer Network and Internet
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Abstract

This paper first revisits the previously proposed NSAD (New Self-Adapt DCF) mechanism. Some modifications are presented to further enhance the performance of NSAD in the error-prone environment. Then a new MAC mechanism is proposed that can realize bandwidth guarantee by assigning different self-adapt parameters to users at different priority levels. The bandwidth guarantee property of this new mechanism is analyzed and the high priority users are found to have bandwidth guaranteed even in heavy contention condition, which is proved true not only by theoretical analysis but also by simulation results. At the same time the new scheme keeps the self-adapt character of NSAD, so the overall system utilization is kept very high in heavy contention condition compared with the previously studied DCF-based QoS mechanisms.

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References

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Author information

Authors and Affiliations

  1. National Laboratory of Switching Technology and Telecommunication Networks, Beijing University of Posts and Telecommunications, 100876, Beijing, P.R. China

    Yong Peng & Shi-Duan Cheng

Authors
  1. Yong Peng
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  2. Shi-Duan Cheng
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Corresponding author

Correspondence to Yong Peng.

Additional information

This work is supported by the National Natural Science Foundation of China under Grant No.90204003, the National High Technology Development 863 Program of China under Grant No.2001AA112071, No.2001AA121052 and No.2002AA103063, and the Research Fund for the Doctoral Program of Higher Education (RFDP) of China under Grant No.20010013003.

Yong Peng was born in 1978 and received his B.S. degree in computer science from the Beijing Univ. Posts & Telecommunications (BUPT) in 1999. He is currently a Ph.D. candidate of the National Laboratory of Switching Technology and Telecommunication Networks at BUPT. His research interests are QoS and wireless networks.

Shi-Duan Cheng is a professor and Ph.D. supervisor. She graduated from BUPT in 1963. She has published more than 70 papers and several books in the field of telecommunications. Her research interests cover ISDN, ATM, protocol engineering, network performance, security and survivability.

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Peng, Y., Cheng, SD. Performance enhancement and bandwidth guarantee in IEEE 802.11 wireless LANs. J. Comput. Sci. & Technol. 19, 150–157 (2004). https://doi.org/10.1007/BF02944792

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  • DOI: https://doi.org/10.1007/BF02944792

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