Transcript Subject: Evolution towards the Next Generation Network

Evolution towards
the Next Generation Network
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Agenda
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Why NGN
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NGN Basic Features
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Conversion Strategies towards NGN
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Standards & Regulations
Subject: Evolution towards the Next Generation Network
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Why NGN?
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User’s growing demands for enhanced multimedia services, integrated
applications of real time traffic and high data volumes, high speed
internet, video on demand, mobile communications, everywhere, all
the time
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Need for advanced features of flexibility and reliability, unfettered
access to competing providers and services, generalized mobility
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Existing switching, optical, satellite and wireless technologies must be
integrated into high quality, distributed, multi-service networks – Fixed
Mobile Convergence FMC
Subject: Evolution towards the Next Generation Network
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Agenda
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Why NGN
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NGN Basic Features
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Conversion Strategies towards NGN
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Standards & Regulations
Subject: Evolution towards the Next Generation Network
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Architecture & System Characteristics
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ITU-T Y.2001
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Services become independent from underlying transport details
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Packet-based transfer (mainly IP)
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Horizontal configuration: From sausage to sandwich; each layer
provides reusable elements to the other layers
Subject: Evolution towards the Next Generation Network
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Basic Architectural Building Blocks
1. Media Gateway
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‘Translator’ between media formats of the access networks and the
packet NGN
2. Call Server
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Control functionalities over the Media Gateway, supports AAA, routing and
signaling, performance management and administration
3. Media Server
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Allows applications to interact with each other, responsible for
compression, transcoding etc
4. Application Server
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Control, registration support, encryption procedures
Subject: Evolution towards the Next Generation Network
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Functionality Blocks
1. Transport stratum
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The first 3 layers of the traditional OSI 7-layer basic reference level
are involved
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Data transfer (mainly IP), control and management of transport
resources
2. Service Stratum
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Handles the applications to be operated between peer entities
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Provision of functions that transfer service-related data
Each stratum comprises one or more layers, where each layer is composed of
a separate plane for data, control and management
Subject: Evolution towards the Next Generation Network
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Novel Services & Applications
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Leading IP features:
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Multimedia capabilities:
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collaborative interaction
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content delivery
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data retrieval
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video on demand
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online sales
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video streaming
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e-commerce
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video-telephony
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remote control
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VoIP
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tele-action
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TV distribution
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telemetry
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TV broadcasting
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distant device management
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TV on demand
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audio / web / video conferencing
Subject: Evolution towards the Next Generation Network
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Advanced Characteristics
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advanced web browsing
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push-to-talk
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accelerated downloads
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push-to-view
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broadband high speed internet
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group chat
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bandwidth on demand
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instant messaging
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QoS on demand
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multiparty interactive gaming
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triple play
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e-learning
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3G applications
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file sharing
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VPN applications
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broadcast & multicast
Subject: Evolution towards the Next Generation Network
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Agenda
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Why NGN
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NGN Basic Features
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Conversion Strategies towards NGN
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Standards & Regulations
Subject: Evolution towards the Next Generation Network
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Need for Evolution
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NGN proper deployment calls for a carefully planned conversion
strategy.
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The new network has to be highly adaptive. Acceptance and
interoperability must be guaranteed before the market takes the risk to
invest into NGN.
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During the transition period, NGN must allow for a mix of conventional
circuit switched communication services and future IP services.
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Compliance with regulatory requirements and standardization norms is
prerequisite.
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Migration procedure (I)
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The migration procedure will comprise consolidation and expansion
prior to network replacement.
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Deployment of a few large centers with increased switching capacity
and high speed interfaces.
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Addition of new nodes to upgraded existing ones in the access level.
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Integration of voice and data into common applications at the IN
service control point.
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Introduction of an overlay broadband access NGN to address new
customers and services to the existing infrastructure, while allowing
simultaneous operation of both networks.
Subject: Evolution towards the Next Generation Network
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Migration procedure (II)
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Addition of new gateways and upgrade of existing ones by adding
functionality (e.g. to the DSLAMs).
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Emergence of novel IP applications.
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Replacement of outdated equipment or equipment that is not
compatible with new services and cannot be transformed to NGN.
Subject: Evolution towards the Next Generation Network
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Agenda
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Why NGN
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NGN Basic Features
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Conversion Strategies towards NGN
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Standards & Regulations
Subject: Evolution towards the Next Generation Network
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IETF for NGN
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RTP (Real Time Protocol) for the carrying of voice, audio and media
through IP
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SDP (Session Description Protocol) for multimedia sessions
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SIP (Session Initiation Protocol) for signaling, discovery and session
management
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Collaboration with ITU-T for the definition of NGN interworking
regulations, security issues, media gateway control, transport, service
development, authentication, authorization and accounting
Subject: Evolution towards the Next Generation Network
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ITU-T for NGN
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Study Group 13: overall responsibility for IP work
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NGN-GSI (Global Standards Initiative): diverse aspects of services,
capabilities, control, migration of current technology to NGN and future
packet based network requirements
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Rec. ITU-T Y.2261: Evolution towards NGN
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Rec. ITU-T Y.1541: Quantifying user QoS needs in IP terms
Subject: Evolution towards the Next Generation Network
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ETSI for NGN
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TISPAN (Telecoms & Internet converged Services & Protocols for
Advanced Networks): definition of a European view of NGN, releases
on NGN architecture
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NGN Implementation Group: major input to 3GPP IP work
Subject: Evolution towards the Next Generation Network
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Conclusions
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NGN is a promising technology which emphasizes on internet based
services, IP applications and mobility support.
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Strategic planning is indispensable to guarantee interoperability of
NGN with diverse systems.
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Gradual smooth migration from existing networking to innovative NGN
demands coordinated work from the industry and standardization
worlds.
Subject: Evolution towards the Next Generation Network
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Personal details
Name:
Evangelia
Surname:
Georgiadou
Company:
Hellenic Telecommunications Organization (OTE) S.A.
Phone:
+302106114695
E-mail:
[email protected]
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Thank you !
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