题目：Throughput-Delay Tradeoffs in Content-Centric Ad Hoc and Heterogeneous Wireless Networks

时间：6月23日上午10:00

地点：信电楼215报告厅

报告人：Prof. Edmund Yeh, Northeastern University

Abstract:

Two fundamental trends in networking are: first, the bulk of network traffic today, and of its projected enormous growth, consists mainly of content disseminated to multiple users. Second, network content is accessed increasingly in wireless environments. A basic problem, of both theoretical and practical interest, is the characterization of performance and scaling in large-scale wireless networks for content distribution.  This paper addresses this key question. We focus on the well-known random wireless network model, where nodes are uniformly distributed in a network area. Rather than assuming a wireless communication network consisting of source-destination pairs, however, we investigate a content-centric wireless infrastructure where users are mainly interested in retrieving content stored in the network. Combining caching schemes with shortest-path request forwarding, we derive the throughput-delay tradeoff of the content-centric wireless network and solve the caching optimization problem. We then extend our analysis to heterogeneous wireless networks with base stations as well as wireless nodes.

Biography:

Edmund Yeh received his B.S. in Electrical Engineering with Distinction from Stanford University in 1994, his M.Phil in Engineering from Churchill College, University of Cambridge, in 1995, and his Ph.D. in Electrical Engineering and Computer Science from MIT under Professor Robert Gallager in 2001. Since July 2011, he has been Associate Professor of Electrical and Computer Engineering at Northeastern University. Previously, he was Assistant and Associate Professor of Electrical Engineering, Computer Science, and Statistics at Yale University. He is the recipient of the Alexander von Humboldt Research Fellowship, the Army Research Office Young Investigator Award, the Winston Churchill Scholarship, the National Science Foundation and Office of Naval Research Graduate Fellowships, the Barry M. Goldwater Scholarship, the Frederick Emmons Terman Engineering Scholastic Award, and the President‘s Award for Academic Excellence (Stanford University).  He serves as the Secretary of the Board of Governors of the IEEE Information Theory Society.  He recently received the Best Paper Award at IEEE ICC 2015.