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Route Cache Based Load Balancing Scheme for MobileAd-Hoc Networks

机译：Mobilead-Hoc网络的路由基于缓存的负载平衡方案

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摘要

Recently, many on demand routing protocols are suggested to support mobile ad hoc network (MANET) which is self-organized network. The most represented protocols are on-demand routing schemes such as DSR and AODV. These protocols set up routing paths by flooding Route Request (RREQ) packets during route discovery procedure and receive Route Reply (RREP) packets from destination nodes. In order to reduce route discovery latency, every node may use the previous routing information in its route cache and reply RREP instead of the destination. Although the route cache mechanism is simple and efficient approach to enhance the performance, it may result in unnecessary latency when it uses incorrect cache information. In addition, a certain node located around source can be easily congested because it replies every RREQ with RREP and all data flows are concentrated on this node. In this paper, we suggest a dynamic cache monitoring scheme and suppress RREP on heavily congested node to achieve load balancing. To do this, we have defined appropriate queue threshold values and parameters for congestion resolution. We also propose a solution for RREP storm problem which is another side effect of the route cache. Finally throughout the simulation, we have illustrated that proposed scheme shows better performance than the standard algorithm in heavily congested environments.
机译：最近，建议许多在需求路由协议上支持是自组织网络的移动临时网络（MANET）。最代表性的协议是按需路由方案，如DSR和AODV。这些协议通过在路由发现过程中泛洪路由请求（RREQ）报文来设置路由路径，并从目标节点接收路由回复（RREP）报文。为了减少路由发现延迟，每个节点都可以在其路由缓存中使用先前的路由信息​​，并回复RREP而不是目的地。虽然路由缓存机制是简单且有效的方法来增强性能，但在使用不正确的缓存信息时可能导致不必要的延迟。此外，位于源周围的某个节点可以很容易地拥塞，因为它回复了每个RREQ与RRREQ以及所有数据流都集中在此节点上。在本文中，我们建议一个动态缓存监视方案，并在大量拥挤的节点上抑制RREP以实现负载平衡。为此，我们已经确定了适当的队列阈值和拥塞分辨率的参数。我们还提出了一种解决RREP风暴问题的解决方案，这是路线缓存的另一个副作用。最后在整个模拟中，我们已经说明了所提出的方案比大量拥挤环境中的标准算法表现出更好的性能。

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