4th International IEEE Conference on Broadband Communications, Networks, Systems

Research Article

Improving VoIP Call Capacity over IEEE 802.11 Networks

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BibTeX Plain Text
  • @INPROCEEDINGS{10.1109/BROADNETS.2007.4550498,
    author={Yeonsik Jeong and Sandeep Kakumanu and Cheng-Lin Tsao and Raghupathy Sivakumar},
    title={Improving VoIP Call Capacity over IEEE 802.11 Networks},
    proceedings={4th International IEEE Conference on Broadband Communications, Networks, Systems},
    publisher={IEEE},
    proceedings_a={BROADNETS},
    year={2010},
    month={5},
    keywords={},
    doi={10.1109/BROADNETS.2007.4550498}
}
  • Yeonsik Jeong
    Sandeep Kakumanu
    Cheng-Lin Tsao
    Raghupathy Sivakumar
    Year: 2010
    Improving VoIP Call Capacity over IEEE 802.11 Networks
    BROADNETS
    IEEE
    DOI: 10.1109/BROADNETS.2007.4550498
Yeonsik Jeong1,2,*, Sandeep Kakumanu1,*, Cheng-Lin Tsao1,*, Raghupathy Sivakumar1,*
  • 1: School of Electrical and Computer Engineering, Georgia Institute of Technology, Atlanta, Georgia
  • 2: Department of Multimedia System Engineering, SungKongHoe University, Seoul, Korea
*Contact email: ysjeong@ece.gatech.edu, ksandeep@ece.gatech.edu, cltsao@ece.gatech.edu, siva@ece.gatech.edu

Abstract

The expected VoIP call capacity in a one hop IEEE 802.11b network with G.711 voice codec is about 85 simultaneous calls, but the actual observed capacity is only 5 calls even at the highest data rate and under zero loss conditions. In this paper we analyze the reasons behind this inferior performance of VoIP traffic. We also present algorithms at the medium access control layer to improve the observed call capacity. Finally, using ns- 2 based simulations, we evaluate the algorithms and show that performance improvements of up to 300% can be achieved.

Published
2010-05-16
Publisher
IEEE
Modified
2010-05-16
http://dx.doi.org/10.1109/BROADNETS.2007.4550498
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