A Novel Service Differentiated Backoff Algorithm in IEEE 802.11 WLAN

LI Yun; LONG Ke-ping; ZHAO Wei-liang; CHEN Qian-bin

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A Novel Service Differentiated Backoff Algorithm in IEEE 802.11 WLAN

更新时间：2025-07-16

- A Novel Service Differentiated Backoff Algorithm in IEEE 802.11 WLAN
- Acta Electronica Sinica Vol. 34, Issue 10, Pages: 1877-1880(2006)
- 作者机构：
  
  1. 重庆邮电学院光互联网及无线信息网络研究中心,重庆,400065
  2. 电子科技大学光互联网及移动信息网络研究中心,四川,成都,610054
  3. 重庆邮电学院光互联网及无线信息网络研究中心重庆,400065
  4. 电子科技大学光互联网及移动信息网络研究中心四川成都,610054
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN92
- Published：2006
- 稿件说明：
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LI Yun, LONG Ke-ping, ZHAO Wei-liang, et al. A Novel Service Differentiated Backoff Algorithm in IEEE 802.11 WLAN[J]. Acta Electronica Sinica, 2006, 34(10): 1877-1880.
DOI：

LI Yun, LONG Ke-ping, ZHAO Wei-liang, et al. A Novel Service Differentiated Backoff Algorithm in IEEE 802.11 WLAN[J]. Acta Electronica Sinica, 2006, 34(10): 1877-1880. DOI：

摘要

支持QoS的MAC机制是WLAN支持QoS的关键所在.我们已经给出了一种低分组碰撞概率的MAC层回退机制——RWBO+BEB.该文进一步讨论如何让RWBO+BEB支持业务区分的问题.首先提出了一个Markov链模型

分析如何根据无线终端的带宽比率设置最小竞争窗口

然后给出了一种新的支持业务区分的回退算法——DS-RWBO

仿真结果表明

DS-RWBO能根据局域网中每个终端的带宽比率分配无线信道的带宽资源.

Abstract

It is essential to design QoS supported MAC mechanism for supporting QoS in wireless LAN.We have proposed a new backoff algorithm

names RWBO+BEB

to dramatically decrease the packet collision probability.In this paper

we explore how to make RWBO+BEB support service differentiation.A Markov model is proposed to analyze how to choose the minimum contention windows according to the bandwidth ratios of stations.Based on the analysis

a novel service differentiated backoff algorithm for IEEE 802.11 DCF

named DS-RWBO

is proposed.The simulation results indicate that DS-RWBO can allocate the wireless bandwidth according to the bandwidth ratio of each station.

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