应电信系邀请，视频编码及通信领域的国际著名学者、IEEE Fellow陈长汶教授本周四将来电信系访问，并举行学术讲座，欢迎感兴趣的老师和同学届时参加。
时间：11月19日下午2：00
地点：电信系会议室（南一楼东头三楼）
题目：Chain-Type Wireless Sensor Network for Monitoring Long Range Infrastructures: Architecture and Protocols
报告内容简介：
This talk will present an investigation of a special class of wireless sensor networks for monitoring critical infrastructures that may extend for hundreds of miles in distances. Such networks are fundamentally different from traditional sensor networks in that the sensor nodes in this class of networks are deployed along narrowly elongated geographical areas and form a chain-type topology. Based on careful analysis of existing sensor network architectures, we first demonstrate the need to develop new architecture and networking protocols to match the unique topology of chain-type sensor networks. We then propose hierarchical network architecture that consists of clusters of sensor nodes to enable the chain-type sensor networks to be scalable to cover typically long range infrastructures with tolerable delay in network wide data collection. To maintain energy efficient operations and maximize the lifetime for such a chain-type sensor network, we devise a smart strategy for the deployment of cluster heads. Protocols for network initialization and seamless operations of the chain-type sensor networks are also developed to match the proposed hierarchical architecture and cluster head deployment strategy. Simulations have been carried out to verify the performance of the hierarchical architecture, the smart node deployment strategy, and the corresponding network initialization and operation protocols.
报告人简介：
Changwen Chen is currently the professor of Computer Science and Engineering at the University at Buffalo, State University of New York、IEEE Fellow、SPIE Fellow、the Editor-in-Chief for IEEE Trans. Circuits and Systems for Video Technology (CSVT) since January 2006.
Dr. Chen was Allen S. Henry Distinguished Professor in the Department of Electrical and Computer Engineering, Florida Institute of Technology, from 2003 to 2007. He was on the faculty of Electrical and Computer Engineering at the University of Missouri - Columbia from 1996 to 2003 and at the University of Rochester, Rochester, NY, from 1992 to 1996. From 2000 to 2002, he served as the Head of the Interactive Media Group at the David Sarnoff Research Laboratories, Princeton, NJ. He has also consulted with Kodak Research Labs, Microsoft Research, Mitsubishi Electric Research Labs, NASA Goddard Space Flight Center, and Air Force Rome Laboratories.
He has served as an Editor for Proceedings of IEEE, IEEE Trans. Multimedia, IEEE Journal of Selected Areas in Communications, IEEE Multimedia Magazine, Journal of Wireless Communication and Mobile Computing, EUROSIP Journal of Signal Processing: Image Communications, and Journal of Visual Communication and Image Representation. He has also chaired and served in numerous technical program committees for IEEE and other international conferences.
He received his BS from University of Science and Technology of China in 1983, MSEE from University of Southern California in 1986, and Ph.D. from University of Illinois at Urbana-Champaign in 1992. He was elected an IEEE Fellow for his contributions in digital image and video processing, analysis, and communications and an SPIE Fellow for his contributions in electronic imaging and visual communications.
