Overview of PHY Caching in Wireless Networks
Speaker: Vincent Lau, Chair Professor, FIEEE, FHKIE, Dept
of ECE, Hong Kong University of Science and Technology
Email: eeknlau@ee.ust.hk
URL: http://www.ee.ust.hk/~eeknlau
Abstract: There are two fundamental
issues, namely the interference and the backhaul, associated with modern
wireless networks. In this talk, we explore a new way of utilizing cache in the
wireless network called the PHY caching to mitigate interference with very
limited backhaul. We first give an overview of the PHY caching and explain the
key design challenges. Next, we discuss the performance benefit of PHY caching
in various simple wireless channel topologies. Finally, we analyze the benefit
of PHY caching in dense wireless networks (DWN) where we show that the capacity
of the backhaul-limited DWN scales linearly with the number of BSs if the BS
cache size is larger than a threshold that depends on the content popularity
distribution.
Biography:
Vincent obtained B.Eng
(Distinction 1st Hons) from the University of Hong Kong
(1989-1992) and Ph.D. from the Cambridge University (1995-1997). He completed
the Ph.D. degree in two years and joined Bell Labs from 1997-2004. He joined the
Department of ECE, Hong Kong University of Science and Technology (HKUST) in
2004 and is currently a Chair Professor and the Founding Director of
Huawei-HKUST Joint Innovation Lab at HKUST. He is also elected as IEEE Fellow, HKIE
Fellow, Croucher Senior Research Fellow and Changjiang Chair Professor. Vincent has published more than 300 IEEE
journal and conference papers and has contributed to 50 US patents on various
wireless systems. His current
research focus includes robust cross layer optimization for wireless systems, Massive
MIMO, Compressed Sensing, Networked Control Systems as well as PHY Caching for
Wireless Networks.