| 联合竞争窗口和发送调整策略优化WLAN性能 |
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| 引用本文： | 吴大鹏,武穆清,甄岩,孙兵.联合竞争窗口和发送调整策略优化WLAN性能[J].电子科技大学学报(社会科学版),2010(1). |
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| 作者姓名： | 吴大鹏 武穆清 甄岩 孙兵 |
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| 作者单位： | 重庆邮电大学通信与信息工程学院;北京邮电大学宽带通信网实验室; |
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| 基金项目： | 国家自然科学基金(60772109、60972069);;重庆邮电大学博士科研启动基金(A2009-17)的资助 |
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| 摘 要： | IEEE802.11标准中所采用的二进制指数退避机制不能够根据网络当前的碰撞情况有效地使用无线资源,该文提出一种联合竞争窗口和发送时间调整策略,其中自适应竞争窗口方法以被动的方式根据网络当前数据帧碰撞程度快速调整竞争窗口,动态数据包发送时间调整机制使节点能够主动地调节单位时间内注入队列的数据包数量。仿真结果表明,该调整机制能够根据网络状态快速地、自适应地优化节点数据包传输过程中的相关参数,提高无线资源使用率,降低数据包时延。
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| 关 键 词： | 自适应机制 竞争窗口 随机发送时间 无线局域网 |
Enhancing Performance of WLAN by Combining Contention Window and Transmitting Time Adjusting Scheme |
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| WU Da-peng,WU Mu-qing,ZHEN Yan, SUN Bing.Enhancing Performance of WLAN by Combining Contention Window and Transmitting Time Adjusting Scheme[J].Journal of University of Electronic Science and Technology of China(Social Sciences Edition),2010(1). |
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| Authors: | WU Da-peng WU Mu-qing ZHEN Yan SUN Bing |
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| Institution: | 1.School of Communication and Information Engineering;Chongqing University of Posts and Telecommunications Nan'an Chongqing 400065;2.Broadband Communication Networks Lab;Beijing University of Posts and Telecommunications Haidian Beijing 100876 |
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| Abstract: | To improve the performance of IEEE 802.11 wireless local area network (LAN),this paper presents a novel contention aware adjusting mechanism combining adaptive contention window and random varying timing method.The adaptive contention window scheme can determine the contention window based on the collision status rapidly,and the dynamical varying timing method can make the node adjust the number of packets sending during the busy or idle period.The simulations show that our mechanism is able to optimize the... |
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| Keywords: | adaptive algorithm contention window random timing varying wireless local area networks |
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