21647743 NGN and IP Multimedia

8/8/2019 21647743 NGN and IP Multimedia

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Next Generation Networks (NGN)

&the IP Multimedia Subsystem (IMS)

Kevin SutherlandManagerCommunications Engineering Section

International Training Program07 September 2006


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What is NGN?... A concept for a framework for evolution of network

architecture and capabilities, as defined by ITU-TRecommendations

ITU-T SERIES Y: GLOBAL INFORMATION

INFRASTRUCTURE, INTERNET PROTOCOL ASPECTS AND

NEXT-GENERATION NETWORKS

Next Generation Networks Frameworks and functional

architecture models Y.2001 (12/2004) General overview of NGN

Y.2011 (10/2004) General principles and general reference

model for Next Generation Networks


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NGN Definition from Y.2001

Next Generation Network (NGN):

a packet-based network able to provide telecommunication

services and able to make use of multiple broadband, QoS-enabled transport technologies and in which service-related

functions are independent from underlying transport-

related technologies.

It enables unfettered access for users to networks and tocompeting service providers and/or services of their choice. Itsupports generalized mobility which will allow consistent and

ubiquitous provision of services to users.


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NGN Definition cntd Practical Description from ETSI

The convergence of the public switched telephonenetwork, the (PSTN) voice network,the wireless networks (WiFi / WiMAX / GSM / UMTS)and the data networks (Internet)

and broadcasting networks & services ?...

Convergence in the Dictionary

from the Latin verb convergere, i.e. to incline together

convergence is a coming together of two or more distinctentities or phenomena

Convergence in Technology

the combination of two or more different technologies in asingle device e.g. taking photos with a mobile phone,reading emails on a refrigerator, TV on your PC or interneton your TV


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Convergence new multimedia devices

Source:http://www.telstra.com.au/abouttelstra/investor/docs/tls 366_stratrevjustinmilne.pdf


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NGN key characteristics A concept, not just a technology Use packet-based data transfer (IP, ATM) Use multiple broadband, QoS enabled transport technologies

Independence of service-related functions from underlyingtransport-related functions, implying open interfaces

Interworking with legacy networks Supports generalised mobility, with presence/location

information

Unrestricted access by users to different services and/orservice providers

Converged services between Fixed/Mobile networks

Meet all Regulatory requirements, e.g. emergencycommunications, security/privacy, lawful interception etc.


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Existing Telecommunications

Benefits:

Worked well for stand-alone systems

Challenges:

Many Networks = High Operational and Interworking Costs Slow to introduce new services

Users require different devices for different services

Difficult to integrate new services or technologies

Services

Transport

& Access

Source: ASTAP05/WS-IP&NGN/13


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Emerging Telecommunications

Services and access technologies only need to interface to the

common transport layer (IP)

Access

Transport

ServicesInternet Protocol

Benefits: Rapid Service Deployment = New Service Revenues

Allow continued growth of the network

Flexible architecture for future growth and new technologies

Allows for competition at individual layers

Challenges: Legacy policy frameworks are challenged by the emerging

telecommunications model throughout the world



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Access and Service Independence

Each service must beintegrated to a specificaccess technology.

With many servicesconverging it becomescomplex to integratesingle access.

IP provides a commoninterface for access andservices

One point of interfacesimplifies theintroduction of newdevices and services.

video data voice

dsl wi-fi cable

Internet Protocol

video data voice

dsl wi-fi cable



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Networks in TransitionLower cost and

innovative services drives

network convergence

Corpor

ate

Video

PSTN

Servi

ces

Wireless

Voice

WWW

IP Core Broadcast

PSTN

Toll Bypass

IP

PSTN

Academic

Corporate

WWW

IP

Broadband

1G-2G

GSM

CDMA

IP

CATV

MPEG

IP



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Core IP/MPLS Networks

User

One schematic view of NGN

DSL

ASP

Network

WEB

ASP

Network

VoD

DOCSIS

IMS

MMS

GSMWi-Fi

Access

Transport

Services

SIP

PSTN

PSAP

Network

E911



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Driving forces for NGNs

Europe

Ageing networks in need of new equipment

Cost savings, new services North America

Cost savings, new services, competitiveness

Operators: IP core conversion, fixed-mobile convergence,

new service offerings (VoIP, IP-TV)

Asia Pacific Region Mobile users, less investment in legacy infrastructure, new services,

address space limitations, government NGN initiatives

Role-out of new networks in the countries in economic transition

Source: ASTAP05-FR10-PL-30


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Short term issues

Numbering

Regulation of

Standard Telephone

Service

Quality of

Service

Next Generation

Longer term issues

Emergency

Privacy

Security

Competition

Consumer

awareness

Jurisdiction

Core policy areas:

Consumer issues

Competition

Security

Scope for self-regulation

Policy implications.

Source: ASTAP05_WS.IP&NGN-09


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INNOVATION



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Access, security & interoperability

E-mail

SME E-commerce

PSTN,

NGN, 3G

E-banking

E-tax

Office systems

Intranets

E-business,

Managed

networks,

Corporate

networks

SMS

National security

SECURITYWiFiWiMAX

IP TV,

PVR

INTEROPERABILITY

ACCESSPay TV

spam

Free-to-air &

Satellite b/c



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ACCESS INTEROPERABILITY

Consumer Competition Security

EmergencyQuality of Service

Rights of redress

Directories

Privacy

Information

Cho

iceSpecial needs

Universal service

ConvergenceBundling

Bottlenecks

Interconnection &

access

Carrierselection

Numb

er portabi

lityMigration

Investment

STANDARDS

Critical InfrastructureViruses & firewalls

Network attack

Disaster recovery

Lawful Interception

Cybercrime

Mis

use

IDENTITY, NUMBERING, ADDRESSING



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Areas of interest for NGN standards activity International Telecommunications Union (ITU-T)

Study Groups (SG13 lead SG for NGN)

Telecommunication Standardization Advisory Group (TSAG)

NGN Global Standards Initiative (NGN-GSI), since Jan 2006

Built on NGN 2004 Project, Focus Group (FGNGN)

European Telecommunications Standards Institute (ETSI) TISPAN, 3GPP / IMS

Internet Engineering Task Force (IETF) Protocols (IP, SIP, MGCP, ENUM, etc)

Global Standards Collaboration (GSC)

Asia-Pacific Telecommunity (APT) ATP Standardisation Program (ASTAP), NGN Expert Group

Asia-Pacific Economic Cooperation (APEC) Telecommunicationsand Information Working Group APEC TEL


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Defining Standards

Smaller industry fora have helped shape international standards. IETF have developed many of the core NGN technologies (IP, MPLS, SIP, etc.)

3GPP integrated IP-based technologies into an instantiation of the NGN, IPMultimedia Subsystem (IMS)

Release based (ETSI TISPAN r1, 3GPP r7, ITU NGN r1-3) ITU involvement is necessary at the international level to define an

Evolutionary Framework to help solve interworking, mobility andservice definitions issues, but

There could be more pro-active cooperation between the telco andinternet stakeholders


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ITU-T Structural model of Functional components

Transport stratum

Service stratum

Media

Handling

Functions

Access

Functions

OthernetworksOther

networksCustomerFunctions

Transport

UserProfile

Functions

Application Functions

GatewayFunctions

Transport Control

Functions

Control

Media

NNIUNI

Edge

Functions

NetworkAttachment

Control Functions

Core Transport

functions

Core TransportFunctions

AccessTransportfunctions

AccessTransport

Functions

Service and ControlFunctions

Service

User

ProfileFunctions

ManagementFunctions

Ref: http://ties.itu.int/u/fgngn/fgngn/readonly/200504_Geneva/focus_group_reports/FGNGN-MR-0040r1.doc


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Current coverage of FGNGN Release 1

R e s o u r c e a n d

d m i s si o n

C o n t r o l F u n c t i o n s

R

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p p l i c a t i o n u n c t i o n s

o r e t ra n s p o r tu n c t i o n s

c c e s s T r a n s p o r tu n c t i o n s

N G N

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u n c t i o n s

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u s t o m e r a n d

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u n c t i o n sQoS Aspec t s and one par t o f Cont ro l a spec t( IP QoS s igna li ng Requ i rement ) A par t o f

Re lease 1 coverage

Ref: http://ties.itu.int/u/fgngn/fgngn/readonly/200504_Geneva/focus_group_reports/FGNGN-MR-0040r1.doc


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ITU-T releases

18

TSB

Ta le 2 - List ofRelease 1 Delivera les

131/11, 3/11, 4/117/13PSTN/ISDN emulation and simulation6

131/11, 3/11, 4/117/13PSTN/ISDN evolution to NGN6

131/11, 3/11, 4/117/133

volution o4

Net5 orks to NGN6

134/17, 25/1615/13Security6

equirements4

or6

15

115/11Signalling requirements4

or IP7

oS T6 7

.IP7

oS.SIG.8

S14

1317/12, 3/4, 7/44/13, [Note 3]Per4

ormance measurement and management4

orNGN (T6

-pmm)3

135/114/13,3/136

esource and admission control4

unctions(T6

-rac4

)3

134/139 7

oS architecture4

or3

thernet net5 orks (T6

-enet)3

1323/164/136

equirements and4

rame5 ork4

or end-to-end7

oS in NGN (T6

-e2eqos.1)3

134/13@

ulti Service ProviderNNI4

or IP7

oS (T6

-msnniqos)3

134/139 7

oS control architecture4

or3

thernet-based IP access net5

orks (T6

-123.qos)3

131/113/13, 7/13PSTN/ISDN emulation architecture2

13,19, [Note 4]1/11, 5/19, 2/19, 3/193/13,6/13I@

S4

orNext Generation Net5 orks (IA

N)2

13,19, [Note 4]1/11, 6/13, 29/166/13, 2/19 [Note 4]A

unctional6

equirements4

orNGN@

obility (A 6 @

BC

)2

131/113/13

6

equirements

D

9

rchitecture

4

orNGN (

A 6 9

)2

132/13NGN6

elease 1 requirements1

131/13,2/13NGN6

elease 1 Scope1

AE E

roviF

g SG

[Note 2]

AssociateG

Q H estioF

/sCoorG

iF

atiF

g

Q H estioF

/SG [Note 1]

DeliveraI

le TitleWG

Provisio al allocatio ofNGNFG

elivera les to SG Q estio s


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Continuing ITU-T Work NGN Focus Group (FGNGN) scope complete Nov05

Work continues in the various ITU-T Study Groupsaccording to their allocated tasks (Questions)

SG 13 has a continuing (and lead) NGN Role

The ITU-T has announced a NGN Global StandardsInitiative (NGN-GSI) with the Goal to further

strengthen the ITU-Ts leading role in NGN standardwork


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The ETSI NGN Vision Mobile/Fixed Convergence, based on the IMS platform

A multi-service, multi-protocol, multi-access,IP based network - secure, reliable and trusted

Multi-services: delivered bya common QoS enabled core network.

Multi-access: diverse connectivity networks;fixed and mobile terminals, (Mobile, xDSL, etc)

Not one network, but different networks

that interoperate seamlessly Mobility / Nomadicity of both users and devices

My communications services anywhere, any terminal, anytime

>>> all of this leads to a true Next Generation Network

Source: ASTAP05-WP.IP&NGN-08_ETSI


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IP Multimedia Subsystem as defined by 3GPP

3GPP IMS standards define a network domain dedicated to the

control and integration of multimedia services.

IMS is defined by 3GPP from Release 5 onwards (2002)

3GPP2 equivalent of IMS is the MMD (MultiMedia Domain), fullyinteroperable with 3GPP IMS

IMS builds on IETF protocols

Based upon SIP, SDP, COPs and Diameter protocols

3GPP have enhanced these IETF protocols for mobility

IMS in short

Open-systems architecture that supports a range of IP-based services

over the PS domain, employing both wireless and fixed access

technologies

What is IMS?


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Services and Control

Adds call session control to the packet network (GPRS)

enables peer-to-peer real-time services - such as voice, video over a

packet-switched domain

scalable common service control (based on SIP) gives the ability to manage

parallel user services Media Mixing

Ability to pick and mix various multimedia flows in single or multiple

sessions

Can handle real-time voice, video, data

Connectivity Network Independence

Provides access to IP based services independent of the underlying

connectivity technology (mobile / fixed)

IMS is based upon an open standard with a strong evolutionary advantage

IMS architecture & SIP may be easily extended to provide for new services

What does IMS provide?


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Visited

Network

UE

Home

Network

ASS F HSS

GGSN

S-CSCFP-CSCF I-CSCF

Session control

services

Registration

ASinteraction

Chargingetc.

Access Point toNetwork

Hides Topology& Configuration

First Point ofContact

Privacy Control &QoS

Authorisation

LocalServices:Emergency &

Local Numbering

Diameter Protocol

SIP Protocol

IMS basic componentsCSCF CallState Control Functions

P ProxyI Interrogating

S Serving

UE User Equipment

SLF-Subscriber Location Function

HSS- HomeSubscriberServer

AS Application Server

GatewayGPRS

Support Node



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IMS Architecture


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NGN Releases

Both ITU-T and ETSI are planning a series of phased

Releases of NGN standards. For the ITU-T: -

ARelease is a method of prioritizing by identifyinga set of

services to be addressed in a certain time frame. The ITU-T NGN-

FG should progress the work to define the service requirements

and capabilities needed to realize the services in addition to

definingother associated capabilities as needed to facilitate a

NGN in a first Release. The adoption of a release-based approachwill not prevent other work, such as the development of more

generic (release independent) capabilities, and the collation of

services, requirements and issues for later releases.


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TISPAN NGN Architecture

Access

Network Attachment

Subsystem

P

S

T

NAccess Transport

Network Core Transport Network

IMS

IP

(SIP -based)

IP Multimedia Subsystem(Core IMS )

Resource Control

Subsystem

TISPAN x S Connectivity Network

PSTN/ISDN emulation

Subsystem

PSTN/IS N Emulation to

support legacy terminals



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ETSI TISPAN NGN Roadmap

2006

Towardsa converged Wireline and Wireless NGN Release 3

2007 2008

Release 1 Release 2

200920052004

xDSL,

WLANFTTx Fully

Nomadic

Release 1: bringing multimedia services

Limited mobility/user-controlled roaming

xDSL access focus; Access Network Attachment Subsystem

Release 2 optimizing access resource usage

According to user subscription profile and service use

Corporate users specific requirements

Release 3 introducing full (inter-domain) nomadicity

Higher bandwidth access (VDSL, FTTH, Wi-MAX )

???

2010



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TISPAN NGN Rel-1 Scope

Described in DTR/TISPAN-00001-NGN-R1

Release-1 completed Dec.2005

Major service capabilities

Real time conversational services(Voice & Videotelephony)

Messaging (Instant Messaging, MMS),Presence Management

Legacy services emulation enabling

legacy PSTN/ISDN migration towards NGN Content delivery such as VOD, Video

Streaming, TV-Channel distribution (IPTV)

Network Architecture basis

xDSL access prime focus, also WLAN


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Home Networking standards development

due to the evolution of digital technology (e.g. media coding,

Internet), home networks have evolved towards a complexset of devices supporting services and applications in the

home-based business, information, entertainment and

security/control areas

various standards bodies are developing standards for HomeNetworking applications in this converged environment

Home Networks have a role in Next Generation Networking standards bodies have resolved to collaborate and promote

the development of harmonized Home Networking standards

and related networking standards.


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NGN Consumer Access

Multiple BroadbandAccess Options

xDSLEthernet

Home Shopping

Eth.DTV Tuner

Second Line

VoIP

Residential

Gateway

Live Content

Video on Demand

Games Console

NotebookNotebook

PDAPDA

Cable

Home

Security

Fiber

802.11b/g

Router

Set-top Box


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The Future Home

DSL/Cable

or MSOTelephone

Wireless

camera

Wireless

media

gateway

NAS for

MP3 & Video

Content

Integrated networks, content,

and entertainment systems

Managed Security

Managed Voice

Managed Wireless


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In closing NGN is a concept, not just a technology.

NGN is an attempt by operators to provide a single technology

platform into the future to support converged services

NGN is a global initiative, coordinated by the ITU-T

Robust and open standards are essential to the long term

success of IMS and NGN

Not everyone likes or agrees with the NGN concept

especially large parts of the internet community Regulators will have an interesting time trying to manage what

is likely to become a standards/systems battle between various

players


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Links

ITU-T NGN GSI http://www.itu.int/ITU-T/ngn/index.phtml

ETSI TISPANhttp://portal.etsi.org/portal_common/home.asp?tbkey1=TISPA

N

IETF http://www.ietf.org/

APT/ASTAP

http://www.aptsec.org/Program/ASTAP/EG/NGN/index.htm

GSC http://www.gsc.etsi.org/

DCITA - http://www.dcita.gov.au


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Thank you for your attention

Questions ?...

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