Next Generation Networks (NGN)

Kevin SutherlandManagerCommunications Engineering Section

ACMA/ITU International Training Program23 October 2007

2What is NGN?... A concept for a framework for evolution of network

architecture and capabilities, as defined by ITU-T Recommendations

ITU-T SERIES Y: GLOBAL INFORMATION INFRASTRUCTURE, INTERNET PROTOCOL ASPECTS AND NEXT-GENERATION NETWORKSNext 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

3NGN Definition from Y.2001Next Generation Network (NGN):

a packet-based network able to provide telecommunicationservices 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 to competing service providers and/or services of their choice. It supports generalized mobility which will allow consistent and ubiquitous provision of services to users.

4NGN Definition cntd Practical Description (from ETSI)

The convergence of the public switched telephone network, 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 distinct

entities or phenomena

5Convergence...Means different things to different people...

Business model convergence Businesses from telco/broadcasting/media sectors all converging by

aiming to provide similar products and services Telstra selling movies, Apple selling music, movies Apple selling phones that play music and movies

Network Convergence PSTN (fixed) and 2G/3G (mobile) carry voice and data Fixed and mobile networks are converging (FMC) Voice, data, video, audio, music, messaging etc. now carried over a

single broadband service NGN and 4G mobile to be all-IP end-end

Device Convergence e.g. Mobile phone with camera, music player

6NGN

DNS

Spam

2G

3GVoIP

CONVERGENCE

ENUM

Internet

IPv6

IMS

MoLI

IPTVVideo Gaming

QoSAccess

FMC

Spectrum

PSTN

7NGN applications... www access (browsing, information, e-commerce...) voice telephony (VoIP) video calling video on demand broadcast television (IPTV, unicast, multicast) multimedia messaging games ? ?

8All converging into one universal device?

Source:http://www.telstra.com.au/abouttelstra/investor/docs/tls366_stratrevjustinmilne.pdf

Not necessarily

9Device/Consumer Convergence

Devices from each world having Similar functions; TV over internet, internet on phones All able to connect to each other, wirelessly

Source: http://www.dlna.org/about/dlna_white_paper_2006.pdf

10

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

11

Emerging Telecommunications

Services and access technologies only need to interface to the common transport layer (IP)

AccessTransportServices

Internet 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

Source: ASTAP05/WS-IP&NGN/13

12

Core IP/MPLS Networks

User

One schematic view of NGN

DSL

ASPNetwork

WEBASP

Network

VoD

DOCSIS

IMS

MMS

GSMWi-Fi

Access

Transport

ServicesSIP

PSTN

PSAPNetwork

E911

Source: ASTAP05/WS-IP&NGN/13

13

NGN realisation example

Access Independent

(CoreTransport)Network

Service/Network Control

Platform

Application

Multi-layer Service Edge

PresenceQoS/Traffic Control

RADIUS

SIP

SingleSign-On Server

AccountingMulti-point

video-conference

HomeAgent

CertificationAuthority

NWdefense

HGWmanagement

ONUONU

Service Node

ADSL modem

Core Node

MCWDMDSLAM

MC

MC

MC

Distribution Function

BusinessUser

HGW

OLT

V-ONU

HE

V-OLT

Visual System

Mass User

OtherNetwork

GWPSTN

Community CollaborationCommunity Collaboration ContentsContents CommerceCommerce

Ubiquitous NetworkUser

Network

AccessDependentNetwork

BS

RMC

MSC

Transportstratum

Servicestratum

GW

GW

Wireline AccessRAN HE: Head endMSC: Mobile Switching

Center RMC: Radio Media

ConverterBS: Base StationDSLAM: Digital Subscriber

Access ModuleOLT: Optical Line TerminalONU: Optical Network UnitMC: Media Converter

NNI

UNI

Source: http://www.itu.int/ITU-T/ngn/ngn.ppt#540,25,Slide 25

14

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, IPTV)

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

15

Short term issues

NumberingNumbering

Regulation ofStandard Telephone

Service

Regulation ofStandard Telephone

Service

Quality of ServiceQuality of

Service

Next GenerationLonger term issues

EmergencyEmergency

PrivacyPrivacy

SecuritySecurity

CompetitionCompetition

Consumer awarenessConsumer awareness

JurisdictionJurisdiction

Core policy areas: Consumer issues Competition SecurityScope for self-regulation

Policy implications.Source: ASTAP05_WS.IP&NGN-09

16

Access, security & interoperability

E-mail

SME E-commerce

PSTN, NGN, 3GE-bankingE-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

Source: ASTAP05_WS.IP&NGN-09

17

ACCESS INTEROPERABILITY

ConsumerConsumer CompetitionCompetition SecuritySecurity

EmergencyQuality of ServiceRights of redressDirectoriesPrivacyInformationChoiceSpecial needsUniversal service

ConvergenceBundlingBottlenecksInterconnection &access

Carrier selectionNumber portabilityMigrationInvestment

STANDARDS

Critical InfrastructureViruses & firewallsNetwork attackDisaster recoveryLawful InterceptionCybercrimeMisuse

IDENTITY, NUMBERING, ADDRESSINGSource: ASTAP05_WS.IP&NGN-09

18

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

Telecommunication Standardization Advisory Group (TSAG) Study Groups (SG13 lead SG for NGN) NGN Global Standards Initiative (NGN-GSI), since Jan 2006

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

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

Global Standards Collaboration (GSC) ACIF/CA, ARIB, ATIS, CCSA, ETSI, ISACC, ITU-T, ITU-R, TIA, TTA, TTC

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

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

19

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 a building block of the NGN, IP

Multimedia 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 and service definitions issues, but

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

20

ITU-T Structural model of Functional components

Transport stratum

Service stratum

MediaHandlingFunctions

AccessFunctions

Othernetworks

Othernetworks

CustomerFunctions

TransportUser

Profile Functions

Application Functions

GatewayFunctions

Transport Control Functions

Control

Media

NNIUNI

EdgeFunctions

Network Attachment

Control Functions

Core Transportfunctions

Core TransportFunctions

AccessTransportfunctions

AccessTransportFunctions

Service and ControlFunctions

ServiceUser

Profile Functions

M

a

n

a

g

e

m

e

n

t

F

u

n

c

t

i

o

n

s

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

21

Current coverage of FGNGN Release 1

R e s o u r c e a n d A d m is s i o n C o n tr o l F u n c t io n s

R A C F

N e tw o r k A c c e s sA t ta c h m e n t F u n c t io n s

N A A F

O th e r M u l t im e d ia C o m p o n e n ts

S tr e a m in g S e r v ic e s

A p p l i c a t io n F u n c t i o n s

C o r e t r a n s p o r t F u n c t io n s

A c c e s s T r a n s p o r t F u n c t io n s

N G N T e r m in a ls

C u s to m e rN e tw o r k s

U s e rP r o f i l e

F u n c t io n s

Other N

etworks

L e g a c yT e r m in a l s

G W

P S T N / IS D N E m u la t i o n

I P M u l t im e d ia C o m p o n e n t

N N IT r a n s p o r t S t r a t u m

S e r v i c e S t r a t u m

U N I

E d g e F u n c t io n s

A c c e s s F u n c t io n s

S e r v ic e a n d

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

C u s to m e r a n d T e r m i n a l F u n c t i o n s

Q oS A spects an d one part o f C on tro l a spect(IP Q oS sign a lin g Requ irem ent) A part o f

Re lease 1 coverage

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

22

2006 NGN-GSI

Co-located Joint Activity : SG 11, 13, 19 + others Coverage Release 2 Services and Capabilities Functional Architectures and Requirements Mobility Management and FMC IPv6 application into NGN End-to-End QoS NGN Signaling with Resource Admission Control Migration and Interworking aspects (inc. IWF) NGN Security Home Networking (JCA-HN established March 2005) Network aspects of Identification systems (inc. RFID)(JCA-NID established July 2006)

IPTV (IPTV-FG established on April 2006) OthersSource: http://www.itu.int/ITU-T/ngn/ngn.ppt#485,24,2006 NGN-GSI

23

IP Multimedia Subsystem as defined by 3GPP3GPP 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), fully

interoperable 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

Basis for:My communications services anywhere, any terminal, anytime ?

What is IMS?

24

IMS Architecture

25

ETSI - TISPAN TISPAN in an ETSI technical committee,

dealing with fixed networksand the migration from circuit switched networks to packet-based networks (Telecoms & Internet converged Services & Protocols for Advanced Networks (TISPAN)

TISPAN also deals with service aspects,architectural aspects, protocol aspects, QoS studies, security related studies, mobility aspects within fixed networks, using existing and emerging technologies.

TISPAN outcomes much-anticipated - basis for international standards & specifications for FMC

26

Communications Systems Layers

Source: Solum, L & Chung, M The Layers Principle: Internet Architecture and the Law, June 2003

Logical/Code Layer

Physical Layer

Content Layer

Application/ Services

Application Protocol LayerTransport LayerNetwork LayerLink Layer

Text, Speech, Music, Pictures, Video, etc

Web Browsers, Email Client Programs, MP3 Ripping Software, Word Processors, VoIP Clients, etcHTTP, SMTP, FTP, SIP, H323, DNS TCP, UDPIP, ICMP, IGMPInterface to Physical Layer

Ethernet, Modem, DSK, Cable, E1, Fibre Optics, Satellite, Bluetooth, Spectrum, etc.

TCP/IP layers

27

Quality of Service (QoS)

Communications Alliance has established two working committees to address QoS issues: IP Network Quality of Service Voice over IP (VoIP) Quality of Service

Both committees were established in December 2006 by the overarching Communications Alliance VoIPWorking Group

28

Bearer and teleservice QoS

Source: ITU-T Recommendation Y.1542 Framework for achieving end-to-end IP performance objectives

29

IP Network Quality of Service working committee Developing a guideline for Carriage Service Providers (CSPs)

(including ISPs) on Network IP QoS. The guideline will: Define a default set of Network IP QoS classes Address performance levels for IP packet delay, jitter and loss Address IP packet prioritisation for implementing the Network IP QoS

classes (eg. through the use of packet marking and handling) Related test documents will also be developed to verify the

relevant network IP QoS parameters in the guideline Indicative timeframe for publication is Q4 2007

30

Voice over IP Quality of Service working committee Developing a guideline for Australian VoIP Service Providers

and end-users. The guideline will: Provide a measure of VoIP quality in a usable format for end-users (eg.

a rating based on the ETSI E-model) Consider Network IP QoS service classes and requirements Consider interworking with existing voice networks (eg. PSTN/ISDN) Consider standards and requirements for VoIP CE QoS

Related test documents will also be developed to verify the relevant VoIP QoS parameters in the guideline

Indicative timeframe for publication is Q4 2007

31

Home Networking standards development due to the evolution of digital technology (e.g. PCs, media

coding, storage, Internet), home networks have evolved towards a complex set of devices supporting services and applications in the home-based business, information, entertainment and security/control areas

various standards bodies & consumer electronics manufactures are developing standards for Home Networking 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.

32

NGN Consumer Access Multiple Broadband Access Options

xDSLEthernet

Home Shopping

Eth.DTV Tuner

Second Line VoIP

ResidentialGateway

Live Content

Video on Demand

Games Console

NotebookNotebookPDAPDA

Bro

adb a

nd A

cces

s

Cable

HomeSecurity

Fiber

802.11b/gRouter

Set-top Box/DVR/PVREt

hern

et

33

Home Networking

Devices from each world: All able to connect to each other, wirelessly Exchanging and sharing content

Source: http://www.dlna.org/about/dlna_white_paper_2006.pdf

34

NGN Competition issues Market power and network effects

implications for existing and future customer access services

any-to-any connectivity Interconnect

charging models for multiple providers in an E2E service pricing standards

Australian Competition and Consumer Commission (ACCC) has begun canvassing some of the issues in discussions with stakeholders and public.

35

Longer-term NGN issues implications for competition policy jurisdiction and extraterritoriality privacy and security digital rights management access and interoperability common standards consumer interests international and domestic governance issues scope for industry self-regulation

36

Links ACMA http://www.acma.gov.au ACCC http://www.accc.gov.au Communications Alliance http://www.commsalliance.com.au/ DCITA http://www.dcita.gov.au ITU-T NGN GSI http://www.itu.int/ITU-T/ngn/index.phtml ETSI TISPAN

http://portal.etsi.org/portal_common/home.asp?tbkey1=TISPAN

IETF http://www.ietf.org/ APT/ASTAP

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

37

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

38

Thank you for your attention

Questions ?...