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                                          學術報告:Predictable Wireless Networking for Real-Time Sensing and Control(實時傳感和控制系統中的可信無線網絡)
                                          時間:2014-06-04 來源:綜合辦 編輯:zhbgs 訪問次數:609

                                          報告題目: Predictable Wireless Networking for Real-Time Sensing and Control(實時傳感和控制系統中的可信無線網絡)

                                          報告人: Prof. Hongwei Zhang
                                          Department of Computer Science, Wayne State University

                                          報告時間:6月6日 星期五 下午2:00
                                          報告地點:钱柜游戏工控老樓414會議室

                                          報告摘要:
                                          Moving beyond open-loop sensing, embedded wireless networks are increasingly being applied to closed-loop, real-time sensing and control (e.g., for next-generation vehicles/transportation, industrial plants, and smart power grids). In supporting mission-critical tasks, closed-loop, real-time sensing and control requires predictable reliability and real-time in wireless networking. Nonetheless, wireless networking is subject to inherent dynamics and uncertainties within the system and the environment.
                                          Within a system, wireless communication assumes complex spatial and temporal dynamics, network topology may constantly change due to node mobility, network traffic pattern may be dynamic due to event-triggered data traffic and time-varying control strategies, and application requirements on networking quality (e.g., reliability, timeliness, and throughput) may also vary over time and across different applications. Moreover, different dynamics may well interact with one another to yield complex behavior. Within the environment, a wide variety of factors affect wireless networking. Environmental factors such as temperature and humidity can affect wireless communication, electromechanical equipment can introduce complex environmental noise, moving objects or persons may introduce uncertainties to wireless communication, and malicious attackers may try to jam a network.
                                          For predictable reliability and real-time in wireless networking, it is important to address the aforementioned systems and environmental dynamics. Given the potential resource constraints of embedded wireless networks, the solutions have to be light-weight and efficient too. In this talk, we will review these challenges, and we will discuss in detail how to address co-channel interference and how to enable real-time routing in highly-dynamic settings. We will also discuss how to enable open, collaborative innovation in traditionally-closed, safety-critical sensing and control systems, as a part of our projects in the NSF Global Environment for Network Innovations (GENI) program.

                                          報告人簡介:
                                          張洪偉於1997年和2000年在重慶大學取得計算機工程學士和碩士學位,接着他於2006年在美國俄亥俄州立大學取得計算機科學與工程博士學位 。他現在是美國韋恩州立大學計算機科學終身教授和博士生導師 。他的科研工作探索新的系統理論方法解決包括無線網絡、傳感和控制網絡以及互聯網在內的網絡系統中的動態特性和不確定性。
                                          基於美國自然科學基金(NSF)和工業界(如福特汽車公司、通用汽車公司)的資助與合作 ,目前他特別關注無線、汽車、傳感、控制和嵌入式網絡中的建模、算法和系統問題 。 作爲 NSF CAREER 和 NSF 信息物理系統 (Cyber Physical Systems)科研項目的一部分,一些具體的工作包括研究可實際應用的可靠、實時和安全的無線網絡機制 ;作爲 NSFGENI的一部分 ,他也研究網絡傳感和控制實驗中的理論和系統基礎。
                                          他的工作發表在網絡、分佈式計算、實時系統和可靠性系統領域中頂級的期刊和會議;在2010年,他的文章被選爲IEEE Transactions on Mobile Computing 的 Spotlight Paper和International Conference on Network Protocols 的 Best Paper Candidate。他的文章已被引用超過2147次。他的工作也爲許多大型無線網絡系統提供了基礎性的貢獻  ;這些網絡系統包括汽車傳感和控制科研網絡、WiMAX 科研網絡、雲計算設施、NetEye試驗設施、Kansei試驗設施和 DARPA 無限傳感器網絡結題項目ExScal(包括一個200-結點的 802.11b wireless mesh network 和一個1200-結點的無限傳感網絡;是當時世界上最大的實際部署的無限傳感網絡系統)。他也曾獲得美國自然科學基金對年輕教授最高的獎勵 NSF CAREER Award 。他積極參與許多國際會議和雜誌的組織和評審工作。