next generation networks 6
DESCRIPTION
NGNTRANSCRIPT
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Next Generation Networks (NGN)
Kevin SutherlandManagerCommunications Engineering Section
ACMA/ITU International Training Program23 October 2007
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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
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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.
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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
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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
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6NGN
DNS
Spam
2G
3GVoIP
CONVERGENCE
ENUM
Internet
IPv6
IMS
MoLI
IPTVVideo Gaming
QoSAccess
FMC
Spectrum
PSTN
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7NGN applications... www access (browsing, information, e-commerce...) voice telephony (VoIP) video calling video on demand broadcast television (IPTV, unicast, multicast) multimedia messaging games ? ?
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8All converging into one universal device?
Source:http://www.telstra.com.au/abouttelstra/investor/docs/tls366_stratrevjustinmilne.pdf
Not necessarily
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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
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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)
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
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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
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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
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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, 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
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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
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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
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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
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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
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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 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
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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
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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
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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
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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?
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IMS Architecture
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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
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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
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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
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Bearer and teleservice QoS
Source: ITU-T Recommendation Y.1542 Framework for achieving end-to-end IP performance objectives
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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
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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
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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.
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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
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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
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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.
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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
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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/
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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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Thank you for your attention
Questions ?...