Journal of Beijing University of Posts and Telecommunications

  • EI核心期刊

JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM ›› 2007, Vol. 30 ›› Issue (3): 54-57.doi: 10.13190/jbupt.200703.54.zhangym

• Papers • Previous Articles     Next Articles

Analysis on the Dynamic Limited Polling Protocol Based on Parameter of Queue Length

ZHANG Yu-mei1, YANG Da-cheng1,ZHAO Dong-feng2,ZHANG Xin1   

  1. 1. School of Telecommunication Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China; 2.Department of Communication Engineering, Yunnan University, Kunming 650091, China
  • Received:2006-05-30 Revised:1900-01-01 Online:2007-06-30 Published:2007-06-30
  • Contact: ZHANG Yu-mei

Abstract:

Dynamic limited polling protocol based on length of queue (DPBQ) is proposed. This protocol adaptively controls the polling process according to the real-time queue length of each stations and serves the one with the longest queue firstly in each polling cycle. By means of imbedded Markov chain theory and vacation queue model, the theoretical model and performance analysis of that protocol are given. By comparing the polling system of DPBQ and basic polling system with limited service, it is shown that DPBQ system can decrease the mean waiting time of packet, so it can guarantee the delay performance better.

Key words: parameter of queue length, limited polling, dynamic limited polling protocol based on length of queue (DPBQ)system, mean waiting time, vacation queue model

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