Speaker: Prof. Lian ZHAO, Ryerson University, Canada

Time and Date: 9:00-11:30 pm, July 16, 2018

Place: Room B415 of Computing Center Building, Handan Campus, Fudan University

Abstract:

Mobile edge caching has proposed to store popular contents in the cache of base stations (BSs), whereby the requested contents can be directly delivered to mobile users via wireless transmission without going through backhaul or core networks. Accordingly, mobile edge caching can effectively reduce the end-to-end file transmission delay while reliving core network load. In practice, the cache size of BSs is usually limited compared with the huge file library. Therefore, caching efficiency is a critical issue for mobile edge caching. In this talk, the tradeoff between spectral efficiency and content diversity in centralized traffic steering is analyzed. A greedy caching strategy is proposed to minimize delay performance. We also discussed the probabilistic caching as mixed strategies in a non-cooperative game. The connection caching probabilities and strategy mixing probabilities in a mixed strategy of an edge node is found. The best response strategy is proposed.

Biography:

Dr. Zhao received her Ph.D. degree from the Department of Electrical and Computer Engineering (ELCE), University of Waterloo, Canada, in 2002. She joined the Department of Electrical and Computer Engineering at Ryerson University, Toronto, Canada, in 2003 and a Professor in 2014. Her research interests are in the areas of wireless communications, radio resource management, power control, cognitive radio and cooperative communications, optimization for complicated systems. She received the Best Land Transportation Paper Award from IEEE Vehicular Technology Society in 2016; Top 15 Editor in 2015 for IEEE Transaction on Vehicular Technology; Best Paper Award from the 2013 International Conference on Wireless Communications and Signal Processing (WCSP) and Best Student Paper Award (with her student) from Chinacom in 2011; the Ryerson Faculty Merit Award in 2005 and 2007; the Canada Foundation for Innovation (CFI) New Opportunity Research Award in 2005, and Early Tenure and promotion to Associate Professor in 2006.

She has been an Editor for IEEE Transaction on Vehicular Technology since 2013; General Chair for IEEE GreeenCom 2018, co-chair for Wireless Communication Symposium for ICC 2018; workshop co-chair for IEEE/CIC ICCC 2015; Local Arrangement Chairs for IEEE Infocom 2014 and IEEE VTC Fall 2017; co-chair for IEEE Global Communications Conference (GLOBECOM) 2013 Communication Theory Symposium. She served as a committee member for NSERC (Natural Science and Engineering Research Council of Canada) Discovery Grants Evaluation Group for Electrical and Computer Engineering 2015-2018; Associate Chair at the Department of Electrical and Computer Engineering at Ryerson University 2013-2015. She is a licensed Professional Engineer in the Province of Ontario, a senior member of the IEEE Communication and Vehicular Society.