• 中国计算机学会会刊
  • 中国科技核心期刊
  • 中文核心期刊

J4 ›› 2011, Vol. 33 ›› Issue (12): 7-11.

• 论文 • Previous Articles     Next Articles

A Congestion Control Scheme Based on the Price Mechanism  in Wireless Access Networks

YAN Liming,NIU Yugang   

  1. (Key Laboratory of Advanced Control and Optimization for Chemical Processes,
    East China University of Science and Technology,Ministry of Education,Shanghai 200237,China)
  • Received:2011-07-19 Revised:2011-09-26 Online:2011-12-24 Published:2011-12-25

Abstract:

Due to the wireless access networks’ characteristics of large delay, small throughput and high packet loss rate, the current active queue management (AQM) is not applicable to the wiredcumwireless network. This paper analyzes the price production mechanism of Random Exponential Marking (REM) and points out its shortcomings. By improving the price with queuebuffer proportion, a new pricebased congestion control mechanism (PREM) is proposed. PREM uses queuebuffer proportion and virtual capacity as congestion measures. Finally, the proposed algorithm is validated on the NS2 simulation platform and compared with REM, PI and ProxyRED.It is proved that PREM can reduce the packet loss effectively.

Key words: wireless access network;congestion control;active queue management;queuebuffer proportion;virtual capacity