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Cross layer routing and rate adaptation for video transmission in multi-radio Wireless Mesh Networks

机译:多无线无线网状网络中视频传输的跨层路由和速率适应

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In this paper, we propose a cross layer optimization technique for video transmission in multi-radio Wireless Mesh Networks (WMNs). WMNs are used as back haul to connect various networks such as Wi-Fi, Wi-MAX etc. to the internet. The presence of multiple radios in this networks increases the capacity but introduces an interference. Thus, designing a better routing metric to find optimal path is an important issue. Further, as the routing metric and rate adaptation decisions are strongly related, the joint approach is needed to improve the performance of the network. In this work, we propose the cross layer optimization technique by designing a routing metric which considers the link quality parameters from various layers and use some of these parameters for rate adaptation to improve the QoS parameters of the network. We implement our technique using AODV protocol in NS2. The results reveal that the joint approach improves the QoS parameters such as throughput, packet delivery fraction (PDF), Peak signal to noise ratio (PSNR) and frame delay compared to existing approaches.
机译:在本文中,我们提出了一种用于多无线无线网状网络(WMNS)中的视频传输的跨层优化技术。 WMNS用作背部运输以将各种网络(如Wi-Fi,Wi-Max等)连接到Internet。在该网络中存在多个无线电增加的容量,但引入了干扰。因此,设计更好的路由度量来查找最佳路径是一个重要问题。此外,随着路由度量和速率适应决策具有强烈相关的,需要联合方法来提高网络性能。在这项工作中,我们通过设计来自各个层的链路质量参数的路由度量来提出横梁优化技术,并使用这些参数中的一些来进行速率调整以改善网络的QoS参数。我们在NS2中使用AODV协议实现我们的技术。结果表明,与现有方法相比,联合方法改善了QoS参数,例如吞吐量,分组输送分数(PDF),峰值信号和帧延迟。

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