Green Multi-Homing Video Transmission in Wireless Heterogeneous Networks

Speaker:        Professor Weihua Zhuang
                Department of Electrical and Computer Engineering
                Tier I Canada Research Chair
                University of Waterloo

Title:          "Green Multi-Homing Video Transmission in Wireless
                 Heterogeneous Networks"

Date:           Wednesday, 19 August 2015

Time:           2:30pm - 3:30pm

Venue:          Room 4480 (via lift nos. 25/26), HKUST

Abstract:

The wireless communication medium has become a heterogeneous environment
with various wireless access options and overlapped coverage from
different networks. Mobile terminals (MTs), equipped with multi-homing
capabilities, can explore network cooperation to simultaneously aggregate
the offered resources from different networks to support the same
application and thus increase the data rate.  On the other hand, as the
gap between the MT energy demand and battery capacity continues to
increase, the MT operational time in between battery charging has become a
significant factor in service quality. In this presentation, we introduce
an energy management system for MTs to support a sustainable multi-homing
video transmission, over the call duration, in a heterogeneous wireless
access medium. Through statistical video quality guarantee, the MT can
determine a target video quality lower bound for a target call duration.
The target video quality lower bound captures the MT available energy at
the beginning of the call, the time varying bandwidth availability and
channel conditions at different radio interfaces, the target call
duration, and the video packet characteristics in terms of distortion
impact, delay deadlines, and video packet encoding statistics. The MT then
adapts its energy consumption to support at least the target video quality
lower bound during the call. Simulation results demonstrate the superior
performance of the proposed framework over two benchmarks, and some
performance trade-offs.


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Biography:

Weihua Zhuang has been with the Department of Electrical and Computer
Engineering, University of Waterloo, Canada, since 1993, where she is a
Professor and a Tier I Canada Research Chair in Wireless Communication
Networks. Her current research focuses on resource allocation and QoS
provisioning in wireless networks, and on smart grid. She is a
co-recipient of several best paper awards from IEEE conferences. Dr.
Zhuang was the Editor-in-Chief of IEEE Transactions on Vehicular
Technology (2007-2013), and the Technical Program Symposia Chair of the
IEEE Globecom 2011. She is a Fellow of the IEEE, a Fellow of the Canadian
Academy of Engineering, a Fellow of the Engineering Institute of Canada,
and an elected member in the Board of Governors and VP Mobile Radio of the
IEEE Vehicular Technology Society. She was an IEEE Communications Society
Distinguished Lecturer (2008-2011).