NeTS: Small: Scalable Wireless Mesh Network Technology at the Edge for Efficient Mobile Video Data Access on Demand

该奖项是根据2009年美国复苏和再投资法案（公法111-5）资助的。互联网外围无线网络的日益普及，加上对视频点播（VoD）应用的无处不在的访问需求，呼唤新一代的视频流技术。 这项研究正在调查的技术，使有效的视频点播服务的无线网状网络（WMN）。 研究了四种方法：WPatching是一种利用WMN的广播特性来支持VoD应用的组播技术，Dynamic Stream Merging利用智能网格节点来合并视频流以节省无线资源，Hybrid环境使用移动的节点作为中继节点来扩展WMN的服务范围;而约束组播通过消除因特网路由器（第三层）切换延迟，为WMN中的移动的用户提供了高效和无缝的切换。 沿着广泛的仿真研究，开发了一个原型实验与动态流合并和约束组播技术。 这些新的流传输方法提供了一种使VoD应用扩展到传统有线环境之外的技术，以到达边缘无线网络上的移动的用户。 其结果是一个新的范例，有效地管理VoD流量的WMN。 数字图书馆、远程教育、公共信息系统、电子商务和视频娱乐等应用将受益于这种创新的流媒体技术。 为该项目开发的软件和协议将提供给其他研究人员，以促进和鼓励未来的研究和应用实验。

This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5).The growing popularity of wireless networks at the periphery of the Internet, combined with the need for ubiquitous access to video on demand (VoD) applications, calls for a new generation of video streaming technology. This research is investigating techniques to enable efficient VoD service over wireless mesh networks (WMN). Four methods are studied: wPatching is a multicast technique designed to leverage the broadcast nature of WMN to support VoD applications; Dynamic Stream Merging utilizes smart mesh nodes to merge video streams in order to conserve wireless resources; a hybrid environment uses mobile nodes as relay nodes to extend the service range of the WMN; and Constrained Multicast provides efficient and seamless handoffs for mobile users in the WMN by eliminating Internet router (layer-3) handoff delay. Along with extensive simulation studies, a prototype is developed to experiment with the Dynamic Stream Merging and Constrained Multicast techniques. These new streaming methods provide an enabling technology to extend VoD applications beyond the traditional wired environment to reach mobile users on wireless networks at the edges. The result is a new paradigm for efficient management of VoD traffic over a WMN. Applications such as digital libraries, distance learning, public information systems, electronic commerce, and video entertainment will benefit from this innovative streaming technology. The software and protocols developed for this project will be made available to other researchers to facilitate and encourage future research and application experimentation.