| 一种新的无线Mesh网络拥塞控制机制 |
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| 引用本文： | 李显萍,王勇.一种新的无线Mesh网络拥塞控制机制[J].吉林大学学报(理学版),2010,48(3):456-460. |
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| 作者姓名： | 李显萍 王勇 |
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| 作者单位： | 1. 吉林省经济管理干部学院 国际商务系, 长春 130012,2. 吉林大学 计算机科学与技术学院, 长春 130012 |
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| 基金项目： | 吉林省科技发展计划重大项目 |
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| 摘 要： | 针对无线Mesh网络的拥塞问题,提出一种新的链路自适应速率控制机制LLAP(Link Layer Adaptive Pacing),通过网关的链路层队列调度机制进行包的调度和MAC通告,利用Mesh网关控制从有线到无线数据流的发送速率,避免了过多数据传输产生跳路间的严重干扰.控制机制在链路层完成,不需要修改现有的传输或路由协议.利用网络仿真软件NS2对LLAP控制下的Mesh网络性能进行了分析和测试,仿真实验结果表明,LLAP控制下的网络性能得到了明显改善.
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| 关 键 词： | 无线Mesh网络 拥塞控制 多跳 |
| 收稿时间： | 2009-11-03 |
A New Congestion Mechanism in Wireless Mesh Network |
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| LI Xian-ping,WANG Yong.A New Congestion Mechanism in Wireless Mesh Network[J].Journal of Jilin University: Sci Ed,2010,48(3):456-460. |
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| Authors: | LI Xian-ping WANG Yong |
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| Institution: | 1. Department of International Business, Jilin Province Economics and Management Cadre College, Changchun 130012,China|2. College of Computer Science and Technology, Jilin University, Changchun 130012, China |
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| Abstract: | This essay deals with a new self adjusted speed ratecontrol system LLAP（link layer adaptive pacing） in view of the congestion problem inwireless Mesh network. The link layer queue scheduling mechanism at the gatewayis responsible for packet scheduling and MAC circular. LLAP controls the transmission rate of wired to wireless flows at the Mesh gateway to avoid serious interference among hops brought by excessive data transmission, and the control mechanism is realized at link layer without modifying the existing transport and routing protocols. We analyzed the performance of the Mesh network by NS2, andcompared LLAP with 802.11 networks. Simulation results show that the network performance controlled by LLAP is superior to 802.11 networks greatly. |
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| Keywords: | wireless Mesh network congestion control multi hop |
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