| WLAN中基于二次曲线的MAC退避算法 |
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| 引用本文： | 王建新;奎晓燕;黄家玮;罗玉宏.WLAN中基于二次曲线的MAC退避算法[J].华南理工大学学报(自然科学版),2009,37(4). |
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| 作者姓名： | 王建新;奎晓燕;黄家玮;罗玉宏 |
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| 作者单位： | 中南大学,信息科学与工程学院,湖南,长沙,410083
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| 基金项目： | 国家自然科学基金，教育部新世纪优秀人才支持计划，高等学校博士学科点专项科研基金，湖南省杰出青年科学基金，中国博士后科学基金，中南大学博士后科学基金 |
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| 摘 要： | 本文提出了一种基于二次曲线的无线局域网MAC退避算法QIQD (Quadratic Increase, Quadratic Decrease).QIQD通过分段二次曲线计算数据帧碰撞冲突后增大竞争窗口的倍乘因子和数据帧成功传输后减小竞争窗口的倍除因子,从而能够降低碰撞概率和提高信道利用率.仿真实验表明,QIQD能够有效降低站点之间的碰撞概率,增加系统整体的吞吐率,同时增强站点之间的公平性.
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| 关 键 词： | 无线局域网 介质访问控制 退避算法 |
| 收稿时间： | 2008-4-11 |
| 修稿时间： | 2008-6-24 |
A MAC Backoff Algorithm in WLAN based on Quadratic Curve |
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| WANG Jian-Xin.A MAC Backoff Algorithm in WLAN based on Quadratic Curve[J].Journal of South China University of Technology(Natural Science Edition),2009,37(4). |
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| Authors: | WANG Jian-Xin |
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| Abstract: | This paper proposes an efficient MAC backoff algorithms, named QIQD (Quadratic Increase, Quadratic Decrease), based on quadratic curve. QIQD uses piecewise quadratic curves to calculate the multiplicator of contending window after a frame collision and the divisor of contending window after a successful transmission, respectively, which is capable of reducing collision probability and improving channel utilization. Simulation results demonstrate that QIQD can reduce collision probability and improve network throughput; meanwhile, it enhances the fairness between different stations. |
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| Keywords: | Wireless LAN MAC Backoff Algorithm |
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