Probability Distribution of the Contention Window Size in the IEEE 802.11 Based Mobile Ad Hoc Networks

GE Yong-ming; ZHU Yi-hua; LONG Sheng-chun; PENG Jing

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Probability Distribution of the Contention Window Size in the IEEE 802.11 Based Mobile Ad Hoc Networks

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- Probability Distribution of the Contention Window Size in the IEEE 802.11 Based Mobile Ad Hoc Networks
- Acta Electronica Sinica Vol. 38, Issue 8, Pages: 1841-1844(2010)
- 作者机构：
  
  1. 浙江机电职业技术学院,浙江,杭州,310053
  2. 浙江工业大学计算机科学与技术学院,浙江,杭州,310023
  3. 浙江农林大学信息工程学院,浙江,杭州,311300
  4. 浙江机电职业技术学院浙江杭州,310053
  5. 浙江工业大学计算机科学与技术学院浙江杭州,310023
  6. 浙江农林大学信息工程学院浙江杭州,311300
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN92
- Published：2010
- 稿件说明：
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GE Yong-ming, ZHU Yi-hua, LONG Sheng-chun, et al. Probability Distribution of the Contention Window Size in the IEEE 802.11 Based Mobile Ad Hoc Networks[J]. Acta Electronica Sinica, 2010, 38(8): 1841-1844.
DOI：

GE Yong-ming, ZHU Yi-hua, LONG Sheng-chun, et al. Probability Distribution of the Contention Window Size in the IEEE 802.11 Based Mobile Ad Hoc Networks[J]. Acta Electronica Sinica, 2010, 38(8): 1841-1844. DOI：

摘要

在基于IEEE 802.11的移动自组织网络中

MAC(Medium Access Control)层提供了DCF(Distributed Coordinate Function)以控制节点对无线信道的争用.DCF包括了BEB (Binary Exponential Backoff)算法.该文对BEB的重要参数——竞争窗口CW(Contention Window)进行研究

通过随机建模

导出了竞争窗口长度的概率分布

并进行数值分析.研究结果可应用于IEEE 802.11移动自组织网络.

Abstract

In an IEEE 802.11 based mobile ad hoc network (MANET)

the wireless channel is accessed through the DCF (Distributed Coordinate Function)

which is provided at the MAC (Medium Access Control) layer of the IEEE 802.11 standard to control channel contention among nodes.The DCF embeds the BEB (Binary Exponential Backoff) algorithm.The key parameter CW (contention window) of the BEB is investigated by stochastic analysis modeling so that the probability distribution of the contention window size is derived.Numeric results are presented to analyze the performance of the BEB.The derived probability distribution is applicable in MANETs.

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(东南大学计算机科学与工程学院, 计算机网络和信息集成教育部重点实验室, )

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