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arXiv 0907.5441cs.NI
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异构移动Ad-hoc网络中的逐跳拥塞感知路由协议

A Hop-by-Hop Congestion-Aware Routing Protocol for Heterogeneous Mobile Ad-hoc Networks

B. Narasimhan, S. Santhosh baboo

摘要:

在异构移动自组织网络中,资源有限的情况下会发生拥塞。由于共享的无线信道和动态的拓扑结构,分组传输遭受干扰和衰落。在异构ad hoc网络中,通过给定路由的吞吐量取决于其所有链路的最小数据率。在具有各种数据率的链路的路由中,如果高数据率节点将更多业务转发到低数据率节点,则存在拥塞的机会,这导致在这样的路由中的长排队延迟。传统的路由选择中采用跳数作为路由度量,不能很好地适应移动节点。移动自组网的拥塞感知路由度量应该包括链路的传输能力、可靠性和拥塞。在本文中,我们提出了一个逐跳拥塞感知路由协议,采用一个组合的权重值作为路由度量,基于数据率,排队延迟,链路质量和MAC开销。在发现的路由中,具有最小成本指数的路由被选择,这是基于网络中所有节点的节点权重。仿真结果表明,我们提出的路由协议获得了较高的吞吐量和分组投递率,通过减少丢包和延迟。

英文摘要:

In Heterogeneous mobile ad hoc networks (MANETs) congestion occurs with limited resources. Due to the shared wireless channel and dynamic topology, packet transmissions suffer from interference and fading. In heterogeneous ad hoc networks, throughput via a given route is depending on the minimum data rate of all its links. In a route of links with various data rates, if a high data rate node forwards more traffic to a low data rate node, there is a chance of congestion, which leads to long queuing delays in such routes. Since hop count is used as a routing metric in traditional routing, it do not adapt well to mobile nodes. A congestion-aware routing metric for MANETs should incorporate transmission capability, reliability, and congestion around a link. In this paper, we propose to develop a hop-by-hop congestion aware routing protocol which employs a combined weight value as a routing metric, based on the data rate, queuing delay, link quality and MAC overhead. Among the discovered routes, the route with minimum cost index is selected, which is based on the node weight of all the in-network nodes. Simulation results prove that our proposed routing protocol attains high throughput and packet delivery ratio, by reducing the packet drop and delay.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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