Transcript 1_Gen_asp_conv

CONVERGENCE in ICT
September 2005
NTNU
Gennady Yanovsky
SPb State University of Telecommunications
St. Petersburg, Russia
[email protected]
Course Outline
Part 1. Evolution in ICT
# General aspects of convergence in ICT
# Global trends and underlying forces determining the progress on
the world IC sector
# Evolution of network technologies
Part 2. Converged networks and services
# Network Convergence
• Convergence of Fixed Networks
• Fixed and Mobile Convergence
# Media Convergence
# Applications Convergence
Course Outline (Cntd.)
Part 3. Evolution to the Next Generation
Networks (NGN)
# Key drivers of NGN development
# NGN architecture and main NGN building blocks
# NGN protocols
# NGN as converged networks: concluding remarks
References
Evolution and convergence in telecommunications
Lecture Notes, ICTP, Trieste, Italy, 2002
IC Technologies
1. D. McDysan. ATM & MPLS Theory & Application: Foundations
of Multi-Service Networking
2. S. Keshav. An engineering approach to computer networking:
ATM networks, the Internet and telephone network
3. Y-B Lin and I. Chlamtac. Wireless and mobile network
architectures
4. L.M. Correia Wireless flexible personalized communications.
COST 259: European co-operation in mobile radio research
References (Cntd.)
Quality of Service in converged networks
1. G. Armitage. Quality of Service in IP Networks
2. G. Huston. Internet Performance Survival Guide: QoS
Strategies for Multiservice Networks
3. D. McDysan. QoS and traffic management in IP and
ATM networks
4. D. Wang. Internet QoS: Architectures and
Mechanisms for Quality of Service
F.
Cairncross The death of distance: how
communications revolution will change our lives
the
Part 1. Evolution in ICT
1. General aspects of convergence in ICT
A. Information/Computers and Telecoms – two
different worlds still exist?
B. What is convergence – possible definitions?
C. Three aspects of convergence in ICT
D. Main areas of convergence in ICT
E. General picture of convergence
F. Conclusion - Challenges in different areas
1. General aspects of convergence in ICT
A. Information/Computers and Telecoms – two
different worlds still exist?
Yesterday •
Different services - broadcasting, voice telephony,
on-line/off-line computer services
•
Different networks and platforms (technologies)
•
Different terminals - TV sets, telephones, computers
•
Different laws and different regulators, usually at national
level
Current scenario: services tied to specific
technologies and networks
Future scenario: shift from multiple service
specific networks to multiservice network
Nowadays New key forces of Global ICT Evolution
•
•
•
•
•
New regulations in IC sector
Digitalization of networks and devices
Huge unlimited network resources (capacity)
Grows of Internet
Wide expansion of wireless technologies
are transforming the way we communicate, and
transforming the industry that delivers IC services
Results of Global ICT Evolution:
# Different sectors, such as IT, telecommunications, media
and entertainment are in CONVERGING - or have already
CONVERGED
#Services CONVERGENCE is a merger of different
applications and multiple traditional and new services
bundled as a single option (Triple Play) - mix of wireline voice,
video and data (wireline and wireless, NB and BB)
# Consumer devices’ CONVERGENCE for different services telephony, TV or personal computing
#Telecom operators, media and IT companies are using the
new technological and legislative possibilities to offer
services outside their traditional business sectors,
increasingly on an international or global scale
B. What is convergence – possible definitions?
1. Simplified approach - combining of personal computers,
telecommunications and TV into a user experience that is
accessible to everyone.
Market study:
• U.S. - 50% of homes have computers with modems
- 100% of homes have a TV set
• Among TV users - high popularity of the Internet, video-ondemand, and greater interaction with content
BUT - Diffidence about buying and using a personal computer
Convergence is not simply an issue of technology, but also of
culture and life style
TV sets
PCs
TVs
PCs
Are not very interactive
Are highly interactive, tends to be more
text-oriented
Oriented primarily toward
entertainment and news
Displays are large
Are easy to operate, requiring
almost no education to use
Oriented in terms of purpose and content
toward business and education
applications
Displays are smaller
Can be very challenging to use and
usually require formal education or a
certain personal learning
B. What is convergence? (Cntd.)
2. Extended approach
•The coming together of telecommunications, computing
and broadcasting into Information and Communications
Technologies (ICT)
•Within telecom the convergence of voice&data, fixed&mobile
networks/services, public&corporative networks
•ICT uses:
- Single technology used to transmit voice, data and video
- Single carrier/provider for voice, data and video
•ICT expands the range and quality of services
B. What is convergence? (Cntd.)
Definition 1.
Green Paper on the Convergence of the
Telecommunications Media and Information Technology
Sectors (European Commission, Brussels, December 3,
1997)
CONVERGENCE is
•
Possibility of various networks platforms to provide
practically the same set of services
or
•
Unification of user’s devices, such as telephone, PC
and TV set in the form of a single terminal
B. What is convergence? (Cntd.)
Definition 2.
www.itvdictionary.com
(1) The coming together and integration of two or more
technologies. Digital television, computers and
telecommunications being combined is an example of
convergence
(2) The combining and presenting of different media
(multimedia) into a single delivery system.
The Internet is an example of convergence
(3) A color TV's three primary colored pictures need to
precisely overlap (converge) to make one multicolored
picture
C. Four aspects of Convergence in ICT
• Premises convergence
• Access convergence
• Network convergence
• Services convergence
C. Four aspects of Convergence in ICT (Cntd.)
1. Premises convergence – the possibility to treat voice
and data on a common terminal device, such as a
PC, phone or TV set
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PC-to-PC “phone calls”
IP phones that use Ethernet connections
Desktop phone turns into a computing device
Unified communications for person-to-person communications
Web on TV set
Convergence of devices allows service providers to work with
the devices with different technologies to often new cost-effective
services
C. Four aspects of Convergence in ICT (Cntd.)
2. Access convergence – the using of different access
technologies like DSL, cable modems, PON, wireless
technologies in the access segment to provide
multiservice access to new services and apps
•
•
•
•
Copper cable (twisted pair) - DSL
Coax cable – cable modems
Fiber optic cable - PON
Wide range of wireless technologies
C. Four aspects of Convergence in ICT (Cntd)
3. Network convergence - the integration of voice, data
and video networks' transport and signaling
infrastructures in a single unified networking system,
often referred to as a "multiservice network“
• IP as common transport platform
• SIP as common signaling protocol
• IP Multimedia Subsystem (IMS) as an emerging
architecture of fixed and mobile networks
C. Four aspects of Convergence in ICT (Cntd)
4. Services convergence - the merger of applications
and multiple services bundled as a single option.
• Voice, video and data services (Multimedia
communications) – VoIP, Unified messaging,
Videoconferencing
• Converged mobile and fixed services
Target of convergence in ICT – is a creation of costeffective, unified network infrastructure to design,
deploy, manage and support
D. Main areas of convergence in ICT
# Voice and data services
# Mobile and fixed services
# Computer Telephony Integration and Web CC
# Multimedia communications
Examples of new convergent services include:
• VoIP
• Internet services delivered to TV sets via systems like Web
TV
• E-mail and World Wide Web access via mobile telephones
• Mobile Internet
Results – differences are disappeared
•Data and Voice Services - from separate voice and data services
to multimedia applications (IP-Telephony, Web Contact Centers)
• Fixed and Mobile Networks and Services - from separate ones to
the single infrastructure (CAMEL, VHE, IPv6, IMS)
• Public and Corporate Networks – from dedicated networks to
open networks
• Phone, TV and Computer Terminals – from separate devices to
combined multimedia terminals
• Broadcasting services – from broadcasting services to Webbased TV services (IATV, VoD, WebTV)
E. General picture of convergence:
Technological Sectors
ITU
E. General picture of Convergence:
Market Sectors
ITU
F. Conclusion - Challenges in different areas
Regulations
•Are the legislative and regulative docs in the
telecommunications, media and IT sectors in national and
international legislation adapted to the convergence process?
•Will convergence require a reassessment of regulatory
responsibilities at a national or international level, and, if so, in
which areas?
•What additional actions (if any) are required to ensure that the
interests of consumers and of users are respected?
F. Conclusion - Challenges in different areas (Cntd)
Technologies
•What research and development projects should be launched,
what types of products should be developed in the light of
convergence, to the issue of completing the transition from
separate to converged services/networks/devices
•What should be the objectives of standardization in the light of
convergence and what should be the relationships between
national and international standardization?
Market
Will the convergence phenomenon require adaptation of
existing approaches or new approaches to be applied to issues
of market entry; licensing; customers; pricing?