NRT: ORBIT: Open-Access Research Testbed for Next-Generation Wireless Networks

这一合作研究方案的重点是创建一个大规模的无线网络试验台，这将促进对下一代协议和应用概念的广泛实验研究。人们认识到，面向便携式计算和通信的强大技术和市场趋势意味着无线接入在下一代因特网中将发挥越来越重要的作用。与此同时，新的传感器和普适计算应用预计将推动通过新型短距离无线网络互连的嵌入式计算设备的大规模部署。随着灵活、开放接入的无线网络试验床的发展，无线网络领域的技术创新速度可以显著提高。提出的Orbit(下一代无线网络开放接入研究试验床)系统是一个两层的实验室仿真器/现场试验网络试验床，旨在实现实验的重现性，同时也支持在真实世界环境中对协议和应用进行评估。特别是，基于实验室的无线网络仿真器将使用一种新的方法来构建，该方法涉及由静态和移动802.11x无线电节点组成的大的二维网格，这些节点可以动态地互连到具有可复制的无线信道模型的指定拓扑中。系统中的所有无线电设备都提供开放式API，允许最终用户下载无线电链路、MAC和网络层协议，以构建特定的联网方案。一旦在实验室仿真器平台上验证了基本协议或应用概念，用户就可以将他们的实验迁移到现场测试网络，该网络在真实环境中提供高速蜂窝(3G)和802.11x无线接入的可配置组合。将提供广泛的测量工具以支持研究评估，包括网络流量和无线电链路/频谱使用方面。除了开发轨道无线试验台基础设施外，该项目还包括一套全面的“试验性工作包”，旨在产生设计要求，并作为正在开发的系统的最终用户应用程序驱动程序。本项目过程中将涵盖的具体研究主题是：1.802.11x无线局域网方案中的自组织网络[Raychaudhuri，Seskar；Rutgers&amp；Acharya；IBM]2.基于消息的多媒体交付[Schulzrinne，Columbia；Yates，Rutgers]3.移动信息服务的基于XML的内容多播[Ott，Raychaudhuri；Rutgers]4.基于位置的移动网络服务[Schulzrinne；Columbia]5.传感器网络的普适计算软件模型[Parashar，Zhang；Rutgers]6.下一代无线网络的安全协议[Kobayashi；普林斯顿；Trappe；7.移动服务的智能网络中间件(INM)[Paul；Lucent Bell Labs]8.VoIP和IM的点对点基础设施[Acharya，Saha；IBM Research]9.向便携平台提供功率/带宽高效的媒体[Ramaswamy，Wang；Thomson R&amp；D]该项目将由纽约/新泽西州地区的几个大学研究小组与工业合作伙伴Lucent Bell Labs、IBM Research和Thomson合作进行。无线网络试验台将由罗格斯大学WINLAB开发和运营，使用位于罗格斯大学新不伦瑞克校区和该地区合作伙伴地点的设施。根据NSF的使用指南，试验床将可供全国其他研究小组远程或现场访问。在该计划的过程中，将寻求更多的合作伙伴，用于试验床基础设施的开发和研究合作。拟议项目的科学/技术优势是：推进灵活和可扩展的无线网络试验床的设计和实施，以及对下一代无线网络的新颖架构、协议和服务概念进行实验研究。更广泛的影响是，通过向研究社区提供共享的实验平台，加快无线网络的研发周期，并促进在研究和教学中更多地使用实验方法。

This collaborative research proposal is focused on the creation of a large-scale wireless network testbed which will facilitate a broad range of experimental research on next-generation protocols and application concepts. It is recognized that powerful technology and market trends towards portable computing and communication imply an increasingly important role for wireless access in the next-generation Internet. At the same time, new sensor and pervasive computing applications are expected to drive large-scale deployments of embedded computing devices interconnected via new types of short-range wireless networks. The speed of technology innovation in the wireless networking field can be significantly increased with the development of a flexible, open-access wireless network testbed that can be shared by experimental researchers across the networking community.The proposed ORBIT (Open Access Research Testbed for Next-Generation Wireless Networks) system is a two-tier laboratory emulator/field trial network testbed designed to achieve reproducibility of experimentation, while also supporting evaluation of protocols and applications in real-world settings. In particular, the laboratory-based wireless network emulator will be constructed using a novel approach involving a large two-dimensional grid of static and mobile 802.11x radio nodes which can be dynamically interconnected into specified topologies with reproducible wireless channel models. All radio devices in the system provide open API's that permit end-users to download radio link, MAC and network layer protocols to construct a specific networking scenario. Once the basic protocol or application concepts have been validated on the lab emulator platform, users can migrate their experiments to the field test network which provides a configurable mix of both high-speed cellular (3G) and 802.11x wireless access in a real-world setting. Extensive measurement tools will be provided to support research evaluation, including both network traffic and radio link/spectrum usage aspects.In addition to the development of the ORBIT wireless testbed infrastructure, this project includes a comprehensive set of "experimental work packages" intended to generate design requirements and serve as end-user application drivers for the system being developed. Specific research topics to be covered during the course of this project are:1. Ad hoc networking in 802.11x WLAN scenarios [Raychaudhuri, Seskar; Rutgers & Acharya; IBM]2. Message-based multimedia delivery [Schulzrinne, Columbia; Yates, Rutgers]3. XML-based content multicasting for mobile information services [Ott, Raychaudhuri; Rutgers]4. Location-based mobile network services [Schulzrinne; Columbia]5. Pervasive computing software models for sensor networks [Parashar, Zhang; Rutgers]6. Security protocols for next-generation wireless networks [Kobayashi; Princeton & Trappe; Rutgers]7. Intelligent network middleware (INM) for mobile services [Paul; Lucent Bell Labs]8. Peer-to-peer infrastructure for VoIP and IM [Acharya, Saha; IBM Research]9. Power/bandwidth efficient media delivery to portable platforms [Ramaswamy, Wang; Thomson R&D]The project will be conducted as a collaborative effort between several university research groups in the NY/NJ region: Rutgers, Columbia, and Princeton, along with industrial partners Lucent Bell Labs, IBM Research and Thomson. The wireless network testbed will be developed and operated by Rutgers WINLAB, using facilities located at the Rutgers New Brunswick campus and at partner sites in the area. The testbed will be available for remote or on-site access by other research groups nationally, subject to NSF guidelines for use. Additional partners will be sought during the course of the program both for testbed infrastructure development and for research collaboration.The scientific/technical merits of the proposed project are: advancing the state-of-the-art in design andimplementation of flexible and scalable wireless network testbeds, and experimental investigation of novelarchitectures, protocols and service concepts for next-generation wireless networks. Broader impacts are inacceleration of the R & D cycle for wireless networking by providing the research community with a shared-use experimental platform, and in fostering increased use of experimental methods in both research and teaching.