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NGN Focus Group

Inje University , School of computer engineeringChulSoo KimAugust. xy. 2005

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1. Why do we need NGN? 2. NGN architecture3. FGNGN4. Case features5. Future issues6. Conclusions

Contents

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Today Tomorrow

Telephonenetwork

Mobile radionetwork

IP-Network

Multimedia Access - Advantages• easy to handle• reliable• mobile

Internet

1. Why do we need NGN?

One network for everything

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1. Why do we need NGN? (Cont)

• Short Term objective:Create New Revenue possibilities– Removal of boundaries between voice and data opens the way to new

kind of services– Can be realized relatively quickly with limited investments

• Long Term objective:Realize Cost Savings– Simpler network – More efficient network– Cheaper network components– Full benefit only realized when all separate networks have fully migrated

towards the target solution

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Driven byCost Reduction

PossibilitiesDriven by

Revenue IncreasePossibilities

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Packet Network

WAN UTRAN

Mobile PSTN

COCableDSL

Broadband

WLLAccess

Edge

Core

Control

Applications

Management

Content MediaGateway

Management system

ResidentialUsers

Remote Office/SOHOEnterprise Customers MobileUsers

Softswitches

Application Servers

2. NGN architecture

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2. NGN architecture (Cntd)

• A public packet-based communications network with the following characteristics:– layered architecture

• Layers can evolve independently– open interfaces between the layers and all other networks

• Best in class for each layer– seamless control of multiple transport technologies

• Cost savings due to focused CAPEX and reduced OPEX– Centralized intelligence

• Fast and efficient introduction of new services– Gateway interconnection far simpler than Exchange interconnection

• New services — new revenues

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• Functional & Nomadicity Architecture (base on IMS & non-IMS)• QoS (include the xDSL Access)• Security Capability (inc. Authentication)• NGN Control and Signaling Capability• Evolution from CGN to NGN

NGN Focus Group• ITU-T Director launched NGN Focus Group at June 2004• Almost every two month meeting : 6, 7, 9, 11/2004 and 2, 4, 6/2005

Future Packet Network requirementsFPBN (Future Packet-based Network)

WG7

Evolution of Networks to NGN, PSTN evolution to NGNEvol (Evolution)WG 6

NGN Security FrameworkSeC (Security Capability)WG 5

TRQ.IP QoS.SIG.CS1CSC (Control & Signalling)WG 4

TR-123.qos, TR-msnniqos, TR-NGN.qos, TR-NGN.NHNperf, TR-e2eqos.1, TR-enet, TR-atmipa, TR-racs, TR-ipaqos

QoS (Quality of Services)WG 3

Req. and Architecture, Functional Req. for NGN Mobility, Functional Req. for Soft Router

FAM (Functional Architecture, and Mobility)

WG 2

NGN Scope, Releases 1 / General Requirements, Servie and Capability, Mobility Services and Capabilities

SR (Service Requirements)WG 1

DeliverablesAreaWG

3. NGN Standardization

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9 D2TBDFGNGN-OD-00044Customer Manageable IP Network2

D2TBDFGNGN-OD-00043Functional Requirement for Soft Router

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D11Q05FGNGN-OD-00042Functional Requirements for NGN Mobility

2

D11Q05FGNGN-OD-00035Requirements & Architecture for NGN2D

PRI2Q05TBDNGN general services and capabilities (release independent)

1

PRI2Q05TBDNGN general requirements (release-independent requirements)

1

D12Q05FGNGN-OD-00036NGN Release 1 general requirements 1P11Q05TBDMobility Services & Capabilities1D11Q05FGNGN-OD-00038Services & Capabilities1D11Q05FGNGN-OD-00037NGN Scope1

StatusReleaseTargetDate

Current DraftTitleWG

NGN Focus Group

Deliverables on Service Requirements and Architecture

3. NGN Standardization

10 D1May ‘05FGNGN-OD-00024

Performance measurement and management for NGN (TR-pmm)

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D1July ‘05FGNGN-OD-00033

A QoS Framework for IP-based access networks (TR-ipaqos)

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D1July ‘05FGNGN-OD-00031

Resource and admission control sub-system (TR-racs)

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P1July ‘05TBDA QoS control architecture for ATM-based IP access networks (TR-atmipa)

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D1July ‘05FGNGN-OD-00026

A QoS architecture for Ethernet networks (TR-enet)

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D1July ‘05FGNGN-OD-00032

Requirements and framework for end-to-end QoS in NGN (TR-e2eqos.1)

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DRIFeb. ‘05FGNGN-OD-00025

Network performance of non-homogeneous networks in NGN (TR-NGN.NHNperf.).

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DRIFeb. ‘05FGNGN-OD-00045

General aspects of QoS and network performance in NGN (TR-NGN.QoS)

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D1Feb. ‘05FGNGN-OD-00027

Multi Service Provider NNI for IP QoS (TR-msnniqos)

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D1Feb. ’05FGNGN-OD-00010

A QoS control architecture for Ethernet-based IP access networks (TR-123.qos)

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NGN Focus Group3. NGN Standardization

Deliverables on Quality of Services

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PTBD3Q05TBDCandidate Technologies7PTBD3Q05TBDHigh Level Architecture7DTBD2Q05FGNGN-OD-00029Requirements7DTBD4Q04FGNGN-OD-00028Problem Statement7

D11Q05FGNGN-OD-00040PSTN Evolution to NGN6

D11Q05FGNGN-OD-00039Evolution of Networks to NGN

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DTBDTBDFGNGN-OD-00034NGN Security Framework5

DTBDTBDFGNGN-OD-00030TRQ.IP QoS.SIG.CS14

NGN Focus Group3. NGN Standardization

Deliverables on Signaling, Security, Migration and Future

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A NGN is 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 offers unrestricted access by users to different service providers.It supports generalized mobility which will allow consistent and

ubiquitous provision of services to users.

Definitionof NGN(DraftRec.

Y.2001)

Target Standards Area

Generalized Mobility Convergence btw. Fixed & Mobile

Unrestricted Access Open Access I/F

Separation Services with Transport Architecture and Open API

QoS-enabled Transport

Multiple-BroadbandManageable Broadband

Definition & Features of NGN4. Key Features

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Management

Transport Adaptation

Transport

CDR

Transport Resource / Policy Control Function

TMGF

SGF

Transport Resource &

Enforcement Functions

TrafficMeasurement

Function

PGF

CCF

T. Authentication &Authorization

Function

Mobility Support Function

T.Network Access Control Function

AMGF

TerminalFunction

Access Relay Function

ProxyFunction

Session & C

all Control

ApplicationCDR

CDR

CDR

CDR

CDR

CDR

S.Authentication & Authorization Function

Application Gateway Function

Application Server Function(may include own Authentication, Authorization and Accounting)

Charging Collection Function (CCF)

Media Resource Control Function MGCF?

Session Control Function PGCF

EMS

NMS

Session Control ProxyFunction

All lines of this type attach to the corresponding input line at the CCF within session & call control

Scope of NGN

Netw

ork Border Other NGN

other IP MMNetwork

(e.g. IMS)

PSTN/ISDN

Internet

Connection point

T.Network Access Process Function

Packet Transport Function

MediaResource

ProcessingFunction

T-1

T-3T-20

T-7

T-4

LS FunctionUser Profile DB Function

Registration Function

T-6

T-8

T-9

T-13

T-12

S-14

T-11

T-15

T-16

T-18

S-1

S-4

S-9

S-10

S-11 S-12

S-13

S-17

S-18

A-1

A-2

Functional Architecture Model4. Key Features

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Customer Manageable Capability4. Key Features

Subscriber Management

AAAAAA

Remote Access SwitchRemote Access Switch

MetroSwitchMetroSwitch

NNIxUNIxUNIyUNIz NNIy NNIy

C/M-Plane

U-Plane

AccessGatewayAccess

Gateway

Service Management/Call Center

QoS/SLA Management

Soft SwitchFunctions

Service ControlService Control

FCAPS Management

Routing, Signaling, OAM

Addressing, NamingAddressing, Naming

Signaling, OAMSignaling, OAM

Ingress LERIngress LER

Edge BE RouterEdge BE Router

Edge MCUEdge MCU

L1/L2 NodeL1/L2 Node

Core LSRCore LSR

Core BE RouterCore BE Router

Core Multicast NodeCore Multicast Node

L1/L2 NodeL1/L2 Node

Egress LER/GWEgress LER/GW

Edge BE RouterEdge BE Router

Edge MCU or GWEdge MCU or GW

L1/L2 Node/GWL1/L2 Node/GW

VariousServer

Network

ExistingWireline/WirelessNetwork

PSTN/Cable/TVNetwork

NNIz

Manageable NGN Network

DSLAM/ONUDSLAM/ONU

CustomerPremisesNetwork

CMTSCMTS

• Capabilities to support user manageability on IP network. • Users can allocate, configure, control, and manage

the resources of NGN Network elements

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CNAN ANCPN CPNTE TEUser User

Network Performance for NGN

Quality of Service for NGNQoE QoE

Man-Machine Interface

Man-Machine Interface

Network Interface

Network Interface

General reference configuration for NGN QoS, NP and QoE

End-to-end or network elements capabilities

Between (at) service access points

User subject

Focus on planning, development (design), operations and maintenance

Focus on user-observable effects

Focus on user-expected effects

Connection/Flow element attributeService attributeUser behaviour attribute

Provider orientedUser oriented

Network PerformanceQuality of ServiceQuality of Experience

QoS Aspects of NGN4. Key Features

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Mobility Aspects of NGN4. Key Features

Mobility

ServiceContinuity

ServiceDiscontinuity

SeamlessHandover Handover Roaming Portability

NGN CN

NGN CN

AccessNetwork

AccessNetwork

AccessNetwork

AccessNode

AccessNode

AccessNode

IntermediateNode

IntermediateNode

MobileTerminal

Border(Gateway)

Node

BorderNode

BorderNode

Border(Gateway)

Node

Border(Gateway)

NodeIntermediate

Node

MobileTerminal

MobileTerminal

BorderNode

BorderNode

AccessNode

MobileTerminal

FixedTerminal

(1)

(2)

(3)

(4)

MobileTerminal

(4)

NNI

Intra-AN Mobility

Inter-AN Mobility

Inter-TE Mobility

Inter-TE Mobility

Inter-CN Mobility

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Evolution Aspects of NGN4. Key Features

• 4 Scenarios for PSTN evolution to NGN

PSN

PBX43AN42

AG41 New AG

PBX23AN22

AG21 New AG

TG TG

CS

LE3

UAM31

AN32

PBX33

LE1

UAM11

AN12

PBX13

LE1

UAM11

AN12

PBX13

LE4

UAM41

AN42

PBX43

LE3

UAM31

AN32

PBX33

LE2

UAM21

AN22

PBX23

TETETE

TETETE

SG

UAM11

AN12

PBX13

LE1

UAM31

AN32

PBX33

LE3TE TETE

UAM21

AN22

PBX23

LE2

UAM41

AN42

PBX43

LE4

UAM11

AN12

PBX13

LE1

UAM31

AN32

PBX33

LE3

UAM21

AN22

PBX23

UAM41

AN42

PBX43

LE4

CS

PSN

TG TG

SG SG

LE2

3rd Scenario 4th Scenario

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NGN stands for Next Generation, but targeted for Near GenerationNGN could be value added framework for all players : Users, Operators, Providers and Regulators etc.NGN could be evolved from Current Generation NetworkNGN could be basement for making convergence world(real Telecommunication World)NGN Standards could be Globalize rather than Localize boosting global village and shorten digital divideITU-T could be centre of NGN standards

TDM basedNetwork

Packet basedNetwork

CGNMobileAccess

FixedAccess

Broadcasting Net.

BBX-castingMM

PacketBased

Tele-Broadconv.

Network

Next GN

FixedMobileConv.

BBAccess

QOSMobility

TDM basedNetwork

Packet basedNetwork

Near GN

FixedMobileConv.Access

Broadcasting Net.

Standards for Near Generation, not Next5. Future Issues

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Transport

ServicesTelephone Services

Data Services (WWW, e-mail, etc)Video Services (TV, movie, etc)

NGN - Convergence Model

ACCESS ACCESSCORE

xDSL Optic

Ethernet or others

Future Packets (?)

API

Future Issues of NGN Standardizations

IMS Beyond IMS

NGNRelease 1

NGNRelease 2

NGNRelease 3

Recommendations &Technical Reports

Rec. Y.NGN-FRM

Rec. Y.NGN-CMIP

TR. 123.qosTR. NGN.qos

Rec. Y.NGN-MOB

TR. atmipaTR. enet

TR. e2e.qos.1

FG NGN Standards

• NGN could be infrastructure for Broadband Services/Applications• NGN could be framework for “Convergence” : F↔M T↔B

5. Future Issues

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NGNRelease 3

• Target dates : Realization of NGN• Services and Capabilities (include Network and Control Capability)• Architecture and their components• Specifications for Interfaces, etc.

NGNRelease 2

I/F 1End of 2005 (TBD)

•Services & Capabilities : S&C 1•Functional Arc. & Spec. : FA&S 1•IW and Interconnection : IAI 1•Migration : MIG 1

I/F 2End of 2006 (TBD)

•S&C 2 = S&C 1+ A2•FA&S 2 = FA&S 1 + B2•IAI 2 = IAI 1 + C2•MIG 2 = MIG 1 + D2

(?)

•FPS Based (?)

Development of NGN Releases5. Future Issues

NGN Release 1

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Users Terminals /Appliances

ServiceProviders Program

Providers

NGN Infrastructure

Content-based Delivery Network InfrastructureService Broker InfrastructureInformation Broker Infrastructure

ConvergenceIntegrationMobility (Uniq. ID)

Simplified Realization Model of NGN6. Conclusion

SERVICE

BRK

INF

BROKER

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Thanks for your listenning

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