A new performance parameter for IEEE 802.11 DCF

  • Authors:

  • Yun Li;Ke-Ping Long;Wei-Liang Zhao;Qian-Bin Chen;Yu-Jun Kuang

  • Affiliations:

  • Special Research Centre for Optical Internet & Wireless Information Networks, ChongQing University of Posts & Telecommunications, ChongQing, China;Special Research Centre for Optical Internet & Wireless Information Networks, ChongQing University of Posts & Telecommunications, ChongQing, China;Special Research Centre for Optical Internet & Wireless Information Networks, ChongQing University of Posts & Telecommunications, ChongQing, China;Special Research Centre for Optical Internet & Wireless Information Networks, ChongQing University of Posts & Telecommunications, ChongQing, China;Special Research Centre for Optical Internet & Wireless Information Networks, ChongQing University of Posts & Telecommunications, ChongQing, China

  • Venue:
  • MMNS'05 Proceedings of the 8th international conference on Management of Multimedia Networks and Services
  • Year:
  • 2005

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Abstract

In this paper, we define a new performance parameter, named PPT, for 802.11 DCF, which binds successful transmission probability and saturation throughput together. An expression of optimal minimum contention windows (CWmin) is obtained analytically for maximizing PPT. For simplicity, we give a name DCF-PPT to the 802.11 DCF that sets its CWmin according this expression. The simulation results indicate that, compared to 802.11 DCF, DCF-PPT can significantly increase the PPT and successful transmission probability (about 0.95) in condition that the saturation throughput is not decreased.