CAREER: A Theoretical Foundation for Supporting Delay-Sensitive Applications on Wireless Networks

职业：支持无线网络上延迟敏感应用的理论基础

• 批准号: 0643145
• 负责人: Xiaojun Lin
• 金额: $ 40万
• 依托单位: Purdue University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2007
• 资助国家: 美国
• 起止时间: 2007-05-01 至 2014-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0643145&HistoricalAwards=false
• 关键词: CAREER; Theoretical; Foundation; Supporting; Delay

Emerging wireless networks are envisioned to simultaneously support both delay-tolerant and delay-sensitive applications. Unfortunately, providing delay guarantees in wireless networks has been a challenging problem due to (i) the unreliable and resource-constrained wireless channel, and (ii) the inherent complex interactions across multiple protocol layers. The goal of this CAREER project is to provide an advanced suite of theoretical tools, algorithms, and protocols for supporting delay-sensitive applications on wireless networks. By combining large-deviation with Lyapunov stability, this project first develops a new unified theory for characterizing the delay performance of advanced MAC/PHY mechanisms. This is then integrated into a unified cross-layer control and optimization framework for delay-sensitive applications, which leads to high-performance algorithms and protocols for MAC scheduling, advanced rate adaptation, admission control, multi-path routing, and pricing-based control. Finally, in one of the focused application areas, vehicular networks, the project develops tailored analytical tools and control algorithms to address the unique real-time requirements of highway safety applications.Research results will have a broad impact on the wireless industry by providing novel analytical techniques and practical control protocols for wireless networks supporting delay-sensitive applications. Through the Center for Wireless Systems and Applications, the PI will actively share the results with industrial collaborators. The research is tightly integrated into the undergraduate and graduate curricula at Purdue. In particular, a vertically integrated Project team is formed to involve undergraduate students in research. The project will also benefit our society by improving highway safety and saving human lives.

新兴的无线网络被设想为同时支持延迟容忍和延迟敏感应用。不幸的是，在无线网络中提供延迟保证一直是一个具有挑战性的问题，因为(i)不可靠和资源受限的无线信道，以及（ii）跨多个协议层固有的复杂交互。CAREER项目的目标是提供一套先进的理论工具、算法和协议，以支持无线网络上对延迟敏感的应用。本项目将大偏差与李雅普诺夫稳定性相结合，首次提出了一种新的统一理论来表征高级MAC/PHY机制的延迟性能。然后将其集成到延迟敏感应用程序的统一跨层控制和优化框架中，从而产生用于MAC调度、高级速率适应、准入控制、多路径路由和基于定价的控制的高性能算法和协议。最后，在重点应用领域之一的车辆网络中，该项目开发了量身定制的分析工具和控制算法，以满足公路安全应用的独特实时需求。研究结果将通过为支持延迟敏感应用的无线网络提供新的分析技术和实用的控制协议，对无线行业产生广泛的影响。通过无线系统和应用中心，PI将积极与工业合作者分享结果。这项研究与普渡大学的本科和研究生课程紧密结合。特别是成立了一个垂直整合的项目团队，让本科生参与研究。该项目还将通过改善公路安全和拯救人类生命来造福社会。