2010 Events

Heterogeneous Interworking for Multimedia QoS Provisioning

Seminar Title:
Heterogeneous Interworking for Multimedia QoS Provisioning
Abstract:

The next-generation wireless data communications have been envisioned to be supported by heterogeneous networks using various wireless access technologies. The popular cellular networks and wireless local area networks (WLANs) present perfectly complementary characteristics in terms of service capacity, mobility support, and quality-of-service (QoS) provisioning. The cellular/WLAN interworking is thus an effective way to promote the evolution of wireless networks.

As an essential aspect of the interworking, resource allocation is vital for efficient utilization of the overall resources. In this research, we propose and analyze effective traffic assignment/reassignment strategies and admission control policies to distribute multi-service traffic to the overlay cell or WLAN. As such, the multi-service provisioning can be enhanced by taking a good advantage of the complementary network strength and an overlay structure. The overall resource utilization and QoS satisfaction are improved substantially by taking into account the multi-service traffic characteristics, such as the delay- sensitivity of voice traffic, elasticity and heavy-tailedness of data traffic, and rate-adaptiveness of video streaming traffic. Also, the impact of user mobility is properly addressed in the analysis. Distributed implementation is enabled with a randomized strategy to reduce deployment cost.

Speaker Bio:
Wei Song received a Ph.D. degree in electrical and computer engineering from the University of Waterloo, Canada, in 2007. Since 2008, Dr. Song has been supported by the Natural Science and Engineering Research Council (NSERC) of Canada and worked as a postdoctoral research fellow at the Department of Electrical Engineering and Computer Sciences, University of California, Berkeley. In July 2009, she joined the Faculty of Computer Science, University of New Brunswick, as an assistant professor. Her current research interests include the interworking of cellular networks and wireless local area networks (WLANs), resource allocation for heterogeneous wireless networks, vehicular ad hoc networks, cross-layer optimization for multimedia quality-of- service (QoS) provisioning, and cooperative multi-hop relay communications.

Movie:
Date:   Tuesday, January 26, 2010
Time:   7:00 p.m. to 8:30 p.m.
            Start time:   7:00 p.m.
            Running time: 90 minutes
            End time:     8:30 p.m.
Place:  Room HC11, Lecture Room
        Head Hall
        15 Dineen Drive
        University of New Brunswick
        Fredericton, NB, Canada

The movie presentation is co-sponsored among the IEEE New Brunswick Section, the IEEE New Brunswick Joint Communications and Computer Chapter, the Department of Electrical and Computer Engineering of the University of New Brunswick, and the Faculty of Computer Science of the University of New Brunswick. This seminar is open to the public. For further information, please contact: Esam Ghanem EsamG@BarrettBroadband.com