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| IMS Convergent Network: Opportunities and
Challenges. |
Kalyan Basu
Department of Computer Science and Engineering
The University of Texas at Arlington
E-mail: basu@cse.uta.edu
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| Abstract: |
IP Multimedia Subsystem (IMS) is expected to play a key role in the convergence
of telecom and Internet services by using a common IP core network. The
IMS architecture, based on IP, allows for the delivery of services to
subscribers independent of device or network type and location. It can
be used to provision true mobility services that will follow the user
from a computer, mobile device or even television through a single account.
While this convergence will facilitate easier access to services and a
variety of revenue generating applications, it will also open the door
to potential complaints from customers about networks performance, poor
media quality, and less-than-satisfactory reliability. The varied numbers
of protocols and interfaces IMS will introduce are continually evolving
to facilitate standards-based fixed/mobile, voice/data and voice/video
convergence. Complex interoperability requirements such as handshaking,
media conversion and synchronization must be resolved in order to guarantee
quality of service. These issues underscore the need for a deep understanding
of underlying technologies as well as the performance and scalability
assessment, and Quality of Experience (QoE). IMS deployment brings another
opportunity, to adopt standard ATCA computer Platform for application,
like Blade Server hardware. The service providers can build a robust and
flexible framework to address immediate VoIP opportunities within enterprise
and consumer markets and across Service Providers’ networks. This
solution, coupled with DSP media processing technology, eliminates the
technical issues which prevent scalable deployment of real-time IP networks
and enables rapid adoption of new IP based services from SS7 based networks.
This tutorial will introduce the IMS architecture and discuss the different
protocols and network elements. We will also discuss the new modeling
techniques required to use the ATCA based blade platform to design the
network. The QoE for VOIP and IPTV services is a new challenge for this
architecture. The attendees will have a good understanding of the IMS
architecture and the challenges for technology and performance evaluation
in this convergent network.
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| Biography |
Kalyan Basu is the managing director of UTA’s Center for Research
in Wireless Mobility and Networking (CReWMaN). He has more than 35 years
of telecommunication industry experience. Last 30 years he was involved
in telecommunication system research and most of that time he worked for
Nortel research group and Bell Northern Research. After retiring from
Nortel research group in 2001, he joined the University of Texas at Arlington
(UTA). He has received more than 20 European and US patents and published
more than 100 technical papers in various journals and technical conferences.
He has been involved in organizing various IEEE/ACM sponsored conferences,
contributed as technical committee members and chaired many technical
sessions. He obtained B.E.E. degree from Calcutta University, India and
M.S. Computer Engineering from Indian Institute of Technology at Delhi
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