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首页> 外文期刊>IEEE Transactions on Parallel and Distributed Systems >Congestion Adaptive Routing in Mobile Ad Hoc Networks
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Congestion Adaptive Routing in Mobile Ad Hoc Networks

机译：移动自组织网络中的拥塞自适应路由

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摘要

Mobility, channel error, and congestion are the main causes for packet loss in mobile ad hoc networks. Reducing packet loss typically involves congestion control operating on top of a mobility and failure adaptive routing protocol at the network layer. In the current designs, routing is not congestion-adaptive. Routing may let a congestion happen which is detected by congestion control, but dealing with congestion in this reactive manner results in longer delay and unnecessary packet loss and requires significant overhead if a new route is needed. This problem becomes more visible especially in large-scale transmission of heavy traffic such as multimedia data, where congestion is more probable and the negative impact of packet loss on the service quality is of more significance. We argue that routing should not only be aware of, but also be adaptive to, network congestion. Hence, we propose a routing protocol (CRP) with such properties. Our ns-2 simulation results confirm that CRP improves the packet loss rate and end-to-end delay while enjoying significantly smaller protocol overhead and higher energy efficiency as compared to AODV and DSR
机译：移动性，信道错误和拥塞是移动自组织网络中数据包丢失的主要原因。减少数据包丢失通常涉及在网络层的移动性和故障自适应路由协议之上进行的拥塞控制。在当前设计中，路由不支持拥塞。路由可能会使发生拥塞，这是通过拥塞控制检测到的，但是以这种反应方式处理拥塞会导致更长的延迟和不必要的包丢失，并且如果需要新的路由，则需要大量开销。特别是在诸如多媒体数据之类的大流量的大规模传输中，此问题变得更加明显，在这种情况下，拥塞的可能性更大，而丢包对服务质量的负面影响更为重要。我们认为路由不仅应该了解网络拥塞，而且应该适应网络拥塞。因此，我们提出一种具有此类属性的路由协议（CRP）。我们的ns-2仿真结果证实，与AODV和DSR相比，CRP可改善数据包丢失率和端到端延迟，同时显着减少协议开销并提高能效

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