Cenários de Mudança 2
-Setting the Context 2
2012-2013
Mestrado em Engenharia de Redes de Comunicações
MSc in Communication Networks Engineering
ENGENHARIA DE SERVIÇOS
SERVICES ENGINEERING
Outline
‣
Internet services and applications
‣
Enterprise networking and evolution
‣
Convergence: developing toward the NGN
Definition of Intelligent Network
‣
Intelligent Network:
A telecommunications
network architecture that provides flexibility
for facilitating the introduction of new
capabilities and services, including those
under customer control.
‣
Meaning the Separation of:
‣
Call control
carried out
in the switches
‣
Service control
, implemented
on computers
separate from the switches
Intelligent Network Paradigm
‣
Terminals are dumb phones
‣
Switches have logic for basic call routing (1)
‣
Logic for enhanced services hosted on Service
Control Point (2) is invoked by switch
‣
Specialized Peripheral plays announcements,
collects digits (3),
Internet Service Paradigm
‣
End-to-End Principle
(1): all services are
provided outside the network
‣
Intelligence resides in clients and servers
‣
Bearer Network:
best-effort transport
of
What is the Internet, really?
Submarine Cable Map
Submarine Cable Map
Satellites 3D Interactive Map
Satellite Teleport
Pictures from
Enterprise networks
‣
Definition of Enterprise Network:
a managed
communications infrastructure serving needs
of a corporation, government or similar entity
with controlled access to or from public
networks
‣
Implementation: virtual or dedicated
‣
Evolution: From separate voice (PBX) and
data private networks to integrated real-time
and information service high-speed networks
Legacy Private Networks
ISP
Leased
Changing Enterprise Networks
‣
Integrated, not separate voice and data
‣
Global reach: any space, any time
‣
Not only large enterprises, SMEs also
‣
Range of applications and terminals
‣
Managed solutions needed: firms focus on
core competence
‣
New modes of working: at home, mobile, …
On-Site
At Home
Anywhere
Deskbound
Agent, Accountant
Teleworker
Convergence
‣
Convergence is the tendency to come together of:
‣
Fixed-mobile:
future distinctions will be between types
of mobility in a single network: user, terminal and
service.
‣
Telecom-Internet:
related to infrastructure, regulatory
and business model convergence.
‣
Services and applications:
telecom, computing,
information, entertainment and broadcasting.
‣
Technology and Infrastructure:
common switching and
transmission
‣
Business models:
Convergence (of other things)
means that business models can depart from the
binary telco-ISP form
‣
Regulatory framework:
traditionally separate
Features of Convergence
‣
Multiservice:
Multiple services, new or formerly separate, are
supported on single set of facilities
‣
Multifunction:
Multiple services are supported on a single
terminal
‣
Interworking:
Facilities interwork to perform or extend functions
‣
Versatility:
The same service or content can be delivered by
different types of infrastructures or media:
‣
Composition of services or content:
exploiting multiple services
(content types) for more powerful services (complex content)
‣
Points of integration:
diverse equipments can work into a
single, common standard interface to supporting facilities.
‣
Layering:
More than abstractions – give separations for
business and regulation
‣
Technology neutrality:
designing applications independent of
Convergence: basic principles
‣
All services over IP (from access to core)
‣
Multi-Service Access Node (edge)
‣
Metro Node (IP Service Node)
‣
Quality of Service (QOS) support
‣
Mobile and fixed network integration
‣
Middleware
‣
3GPP/3GPP2 IMS (IP Multimedia Subsystem)
‣
Reusable service components (SOA approach)
‣
One touch support systems (OSS)
Convergence: Fixed-Mobile
‣
Infrastructures, Systems and Services
Converged
Network
WiFi/WiMAX
GSM
3G/4G
GPRS
M2M
Enterprise ICT
Convergence
‣
Networks: simple, economic, flexible …
‣
... as with Ethernet
End
User
sites
~
2k
~100
sites
Multi-Service Access
Convergent Core
IP/MPLS/WDM
Copper
Fibre &
Copper
DSL
Grooming
Call Servers
WWW
Wireless
Convergence: Fixed-Mobile
‣
Fixed, Wireless, Mobile Accesses…
Triple Play: Definition
‣
Triple Play
, is the “buzz word” used for
Convergence of Voice, Data and Video
Services in a single offer...
‣
The advances reached with IP and Ethernet
technologies made Triple Play a reality!
Voice
Data
Video
Triple Play: basic Architecture
‣
The basic architecture for Triple Play includes the same typical
components used for Digital Television Broadcast services...
PC
Network Management System Element Management SystemApplication
Server
VoD
Server
Video Head-end
Stored Digital
Video
Router/Switch
Head-End
Transport/Core
Network
Aggregation/
Access
Networks
IP
FTTx
xDSL
DVB Stream
Buildings
Customer
Premises
Houses
TV+STB
PSTN
VoIP
Gateway
InternetDefining Convergence…
On one hand:
Convergence is characterized by
the ability to offer multiple
services using a single set of
facilities
On the other hand:
Convergence is characterized
by the ability to offer a particular
service on multiple types of
facilities
Infrastructure
Network Services
App1
App2
App3
Cont
A
Cont
B
Inf 1
Inf 2
Other
NS2
NS 1
Application
Content
Business Model for Convergence
‣
Converge is not a “Business Opportunity” but
a “must” for the Survival of the Operators...
PC
• One network, multiple revenue streams
• Video-optimized Access network
• Video, Voice and Data
• Bundled revenue streams
• Reduced service delivery costs
• Single Network Management Platform
• Customer retention
• Customer with multiple services less likely to
change providers
• Customer’s power of choice focused toward
service options
PSTN
Internet
Service
Video
Services
Bundled Service Revenue
Reduced Costs
Multi-service Access Platform Residential Gateway
End to End Network Management
