Effective MAC scheme for improving usable throughput in WLAN

FENG Hui; WANG Ting; HU Bo

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Effective MAC scheme for improving usable throughput in WLAN

更新时间：2024-10-14

- Effective MAC scheme for improving usable throughput in WLAN
- Issue 7, Pages: 94-99(2006)
- 作者机构：
  
  1. 复旦大学电子工程系
  2. 复旦大学电子工程系,上海,200433
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN925.93
- Published：2006
- 稿件说明：
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FENG Hui, WANG Ting, HU Bo. Effective MAC scheme for improving usable throughput in WLAN[J]. 2006, (7): 94-99.
DOI：

FENG Hui, WANG Ting, HU Bo. Effective MAC scheme for improving usable throughput in WLAN[J]. 2006, (7): 94-99. DOI：

摘要

802.11WLAN基础架构BSS(基础服务集)的DCF模式下

有两个因素严重影响可用带宽。一是随着竞争站点数增加

信道竞争开销增大

利用率下降;二是AP(接入点)在竞争信道中并无优势

上下行带宽严重不对称

降低了实际利用率。针对这两个问题提出一种新的MAC机制

首先通过在AP端统计MAC地址来估计竞争站点数

然后根据数学模型计算AP和站点上下行比例控制下的最优初始竞争窗值

通过广播设置以获取信道最大利用率。

Abstract

In DCF mode of 802.11 infrastructure BSS

the usable throughput was compromiseel by two main factors. One was the channel utilization ratio decreases when the number of competing stations increases. The other one was the se- vere asymmetry between downlink and uplink data because AP possesses no advantage position when accessing the share channel. Both problems were solved by a new MAC scheme which adjusts the minimum contention window of AP and station to optimized values derived from a mathematical model under downlink/uplink bandwidth control. Meanwhile

a new estimation method for station number is proposed via dynamic MAC addresses statistic at AP side.

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Qi ZHANG

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Related Institution

School of Computer Science and Engineering, Southeast University

State Key Laboratory of Integrated Service Networks, Xidian University

School of Information Science and Engineering, Southeast University

Electronic ＆ Information Engineering College,Henan University of Science and Technology

The State Key Lab of ISN,Information Science Institute,Xidian University

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