Highly Efficient / High Quality Multimedia Delivery Techniques over Multi-Hop Wireless Networks

在第一年，我们首先在笔记本Linux PC上对多跳无线网络的多路径路由协议进行了仿真和软件实现的性能评估。然后，我们利用多台笔记本电脑搭建了实际的多跳无线网络实验床，并在校园内进行了视频传输实验。具体内容包括：(1)根据无线信道特性自适应地切换传输路径的多路径路由方法的仿真评估；(2)利用传输路径的接收能力来证明无线信道特性的多路径路由方法的仿真评估；(3)Linux上的开源多跳路由协议KernelAODV的实现和改进；(4)在多台笔记本电脑构建的多跳无线网络上的视频内容分发的实现实验。具体内容包括：(1)发表关于所提出的多路径路由方法及其在多媒体内容递送中的应用的论文，(2)使用H.264/AVC而不是H.263+来实现多跳视频内容递送的实现评估，(3)模拟实际实现环境的多跳无线网络的仿真评估，以及(4)作为所提出的多路径路由协议和视频内容递送技术的应用的视觉传感系统的原始原型实现。

In the first year, we firstly carried out performance evaluation by simulations and software implementations on notebook Linux PC about the multipath routing protocol for multi-hop wireless networks. Then, we built actual multi-hop wireless network testbed using multiple notebook PCs, and executed video delivery experiments in campus. Details are:(1)Simulation evaluations of the multipath routing method, that switches delivery routes adaptively according to wireless channel characteristics,(2)Simulation evaluations of the multipath routing method, that justifies wireless channel characteristics by using receiving powers of delivery routes,(3)Implementation and modification of KernelAODV, that is an open source multihop routing protocol operating on Linux, and(4)Implementation experiments of video content delivery over multi-hop wireless network built by multiple notebook PCs.In the second year, we published a paper, made some presentations at domestic conferences and continued evaluations about the multipath routing protocol for multi-hop wireless networks. Details are(1)Publication of a paper on the proposed multipath routing method and its application to multimedia content delivery,(2)Implementation evaluations of multi-hop video content delivery using H.264/AVC instead of H.263+,(3)Simulation evaluations of the multi-hop wireless network, that emulates actual implementation environment, and(4)Primitive prototype implementations of a visual sensing system, as an application of the proposed multipath routing protocol and video content delivery techniques.