What Operators need from NGN Standardisation
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Transcript of What Operators need from NGN Standardisation
What Operators need from NGN Standardisation
Stewart AlexanderITU Standards Manager, BT GroupWTSA
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Summary
• Business drivers for NGN• Requirements for NGN• Technical view of NGN• What standards do we need for NGN?• What do we want from ITU?
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What’s the Current situation?
• Telecom winter exaggerating the cost of multiple standards – e.g. multiple networks in mobile
• All telcos under pressure to reduce expenditure on standards
• Cost of interworking is killing us• More and more uses are global (mobile, WLAN, Internet
etc) with more and more users travelling.• Standards must be global• Growing complexity from multiple fora as groups become
frustrated with speed of traditional standards bodies• Need for a radical drive to the NGN – speed is essential.
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Why do we need an NGN?
• Make it easier to create new services– Faster– More people can create services
• Make it easier to buy and use services– Give customers greater choice
• Make it simpler to deliver and maintain services– Process automation
• 30-40% cost reduction
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What does it mean?
• New services– Open APIs and applications platforms– Mobile enabled– Re-usable components/capabilities– Build on broadband capability
• Cost reduction– Not enough to do efficiencies and automation– Radical network convergence to fewer networks
and systems carrying more services
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Cost Reduction
• Efficiencies and automation not enough– need to enable customers and partners in the
service management processes• Radical steps required
– need closure of legacy networks and systems• Have to include future of PSTN (voice)• More important to converge in access and
backhaul than in core– because opex and capex centred there
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21st Century Services Vision
“A world where all our customers feel empowered
and are treated as individuals”
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Today’s Networks
• Built on “service=technology” stove pipes.
• Every network service has its own network platform:– FR, ATM, MPLS IP VPN,
Internet, PSTN etc.• We want a converged multi-
service platform to deliver all services.
B C
Internet
Frame R
elay
ATM
SDH
Cost
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21st Century Network Vision
BeginFibre to thePCP
~30,000Multi-ServiceAccessDevices
~100MetroRouters
~10CoreRouters
EndCustomer
InternetPeering
DataCentre
InternationalNetworks
LogicalNodes
~80,000PCPsin the AccessNetwork
~100,000RemoteConcs,DLAMSand Data Muxes
~1000 +Voice Switchesand Data Cross Connects
~170 CoreSwitches(DMSU / NGS)
DataCentre
LogicalNodes
Today
Aggregation Service Edge Core
Provide a common Intelligence Layer
AuthenticationAuthorisation
Presence Monitor Control AccountingCommon Data Model – LDAP interface
Application layer – Web Services .Net J2EE
Interface Protocols– INAP, MGCP, SNMP, CORBA, GMPLS, etc
PSTNand
new generationPSTNFl
exib
le u
ser i
nter
face
Web
, DTM
F,Vo
ice
M
edia
tion
and
Billin
g
Inte
lligen
ce L
ayer
Inte
lligen
ce L
ayer
Data networks
Internetbackbone
Transmission Layer
3rd party networks
Intelligence layer
Intelligent Service Layer – controlling IP and PSTN- and allowing controlled 3rd party access
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Partners& OLOs
ExternalInterfaces
Customersand users
BT People
3rd party APs
Integration & application development framework
EnterpriseManagement
Service Execution Service Management
Applicationexposure
PortalFunctions
TradingGateways
Commercial & Customer Management
Selling, Customer & Channel ManagementBilling
Proposition Creation & HandlingFront Office functions
SupplierManagement
PortfolioManagement
BusinessIntelligence
KnowledgeManagement
&Collaboration
Finance
BusinessSupport
ServiceFulfillment
ServiceAssurance
Mediation & Pricing
Service Management agents
Application
Connectivityresources
Network location
Content
Enterprise&
Premises
Access,Aggregate
&Backhaul
Metro
CoreOptics
&MPLS
21C Network
Workforce Management& Professional Services
Network Management
Technology Management
Aut
hent
icat
ion
& A
utho
risat
ion
Session control
MediaResources
Presence
Messaging
ProfileDirectory
Network ResourceModel
Network Engineering
on-demand Computing(application hosting)
PersonalCommsDevices
Outsourcing Management
Resource Management
ICT Contract Handling
Overall Architecture
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Highest Priority NGN Standards Requirements• Multi-service carrier-scale core
– enabled by underlying ‘MPLSv2’ network• 3GPP Architecture
– extended to Wi-Fi and fixed Broadband access• Session based QoS• Session Control
– extensions to SIP with full multimedia capability• Billing and charging (data interchange billing) between operators• Manageability
– commoditised componentised OSS• Security
– authentication across networks / operators• Home Gateways/Networks
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What do we need to do generally..?
• Prioritise.• Position fora, regional bodies and ITU into a
consistent approach to lead to global standards – an architecture of standards bodies.
• Support the NGN architecture – will require us to merge over traditional boundaries.
• Give equal weight to systems and networks
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ITU is important to NGN for:
• Access Networks – SG15• Core Networks – SG13• Optical Networking – SG15• Spectrum – ITU-R• Numbering & Addressing – SG2• Signalling for QoS across multiple networks –
SG11• Services and applications – SG16• Security – SG17• NGN Focus Group – to get it started and bring it
all together
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Other Important Bodies for NGN
• 3GPP/TISPAN – IMS• ATIS – US carrier requirements• DSL Forum – remote management of CPE• IETF – IPv6, SIP extensions, MPLS, etc• TMF – standardised OSS components• Open Mobile Alliance (OMA) – (Mobile)
Applications, DRM• Metro Ethernet Forum (MEF) – role of Ethernet in
transport network• IEEE 802.11x – Wi-Fi hotspots
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What do we want from ITU?
• Global Standards, speedily and efficiently produced
How do we get this?
• A single ITU-T Study Group for core NGN studies
• A managed release program
• A co-ordinated ITU-T approach
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Conclusions
• NGN will only succeed if based on globally standardised components
• ITU must work with ETSI, ATIS and other fora to achieve standards for NGN
• ITU can provide strategic focus for NGN standards – but must create SG with sufficient critical mass to address NGN issues