ngn in itu-t

International Telecommunication Union

WTSA 2004. 7 October, Florianopolis Brazil

NGN in ITU-TNGN in ITU-T

Chae-Sub, LEEChairman of FG NGN

222.04.23 WTSA 2004. 7 October, Florianopolis Brazil

Contents

1. Why NGN ?

2. NGN Standardization

3. Key Features

4. Future Issues

5. Conclusion


Expected Future Transition Trend : End-End Packets

Past : Seper. of Voice & Data Transp.

Circuit Switch.Access Capa.

Circuit Switch.Transp. Capa.

Packet Switch.Transp. Capa.

Present : Sep. of V & D Access

xDSL / FTTx




Packet Switch.Access Capa.

Near Future : Integration of V & D Transport

VoIP / VToA





Future : Integration of V & D Access and Transp.



Packet based Environments1. Why NGN ?


Separation btw. Services and Transport

1. Why NGN ?

Internet Protocol(IP)

Anything & Everything

Everything

Two Policy Domains

(Any & All Network technologies)

(Any/All Applicationse.g. voice , data , video)

ScopeOf

“Internet”

Services

Transport

Transport

Services

Telephone Services

Data Services (WWW, e-mail, etc)

Video Services (TV, movie, etc)

ACCESS ACCESSCORE

API

• Key Feature of IP : Anything over IP, IP over Everything

• Most of Services using IP as their connection platform

• Most of Networks supporting transport of IP packet

• IP plays a key role to separate Services with Transport


Impacts to Policy and Regulation base

1. Why NGN ?

Phone

PSTN

Internet

IP-Net

M-Ph

Mobile

Pol. AReg. a

Current PolicyRegulationEnvironment (Vertical)

Pol. BReg. b

Pol. CReg. c

Resource-based Pol./Reg.

Video

NGN

VoiceInternet

IP (Future Packet ?) Platform

xDSL/Optic based Fixed-Mobile

MMPol.Reg.

Pol. XReg. x

New PolicyRegulationEnvironment (Horizontal)

• NGN provide a platform separating Services with Transport

• Politics and Regulation environment would be impacted with this

• Current Vertical environment would be changed to Horizontal env.

Service-based Pol./Reg.


Broadcast.Telecom

A B

• Sep. Reg. Authority• Stable Bus. Structure• Stable Tech. Infras.

VoiceData Video

TelecomNetwork

Broadca.Network

Broadca.Services

TelecomServices

StartConvg.

Telecom. mixed with Broadcast.

A B

• Comp. btw. Reg. Aut.• Comp. btw. Bus. Play.• Comp. btw. Tech. Inf.

A B

• Sep. defini. (each side)• Exten. each Bus. area• Exten. of Tech. capa.

VoiceData Video

TelecomNetwork

Broadca.Network

Broadca.Services

TelecomServices

A·B Convg.

• Integ. Reg. Auth.• Confirmed Bus. Area• Stable Tech. Infras.

Convg.

Tele-Broadcast.

* 3M : Multimedia, Multiparty, Multicasting

Contents

NGN

3 M *Services

NGN triggering Convergence

1. Why NGN ?


3GPP/2

xDSL Forum

ATIS ETSI

TTA

TTC

CCSA

ITU-T FG NGN (’04.6 ~ ’05. 5)

NGN Standardization

ITU-T : NGN Project 2004(2001 ~ 2004)

SG 2

SG 4

SG 9

SG 11

SG 12

SG 13 SG 15

SG 16 SG 17

ITU-T JRG-NGN(2003. 9 ~ 2004. 6)

Q1 Q5 Q10

Q16 Q6

ITU-T

NGN

WS

(01 ~ 03)



NGN 2004 Project

o A new ITU Project on NGN : SG13, Nov. 2002o Project description document has been prepared

(http://www.itu.int/ITU-T/studygroups/com13/ngn2004/index.html )

o Fundamental characteristics for defining NGN

1. Packet-based transfer

2. Separation of control functions for bearer - call/session –

service

3. Decoupling of services and network, provision of open I/F

4. Wide range of services (RT/ streaming/ non-RT/ multimedia)

5. BB capabilities with e2e transparency, incl. AN utilization

6. Interworking with legacy networks

7. Generalized mobility

8. Unfettered access from users to competing SPs and

services



JRG on NGN

• ITU-T SG 13 launched JRG-NGN at 1st August 2003 : 3 Meetings

• Joint Special Rapporteur Group Activity within SG 13

• Focus on “Foundational Documentation of NGN” until June. 2004

Draft Recommendations in AAP

Y.NGN-Overview (Y.2001)

Overview of the NGN

Y.NGN-GRM (Y.2011) General principles and general reference model for NGNDeliverables for further study

Deliverables Title

Y.NGN-GRQ General requirements for NGN

Y.NGN- FRM Functional requirements and architecture of the NGN

Y.NGN-CONV Next Generation Networks – Convergence scenarios

Y.NGN-MOB Mobility management requirements and architecture for NGN

Y.NGN-CMIP Customer manageable IP network

Y.NGN-MIG Migration of networks to NGN

Y.PSTN-NGN PSTN migration to NGN



Deliverables on QoS for further study

Deliverables Title

Y.NGN-QoS General aspects of QoS and network performance in the NGN

Y.e2eqos.1Requirements and framework for end-to-end QoS architecture for NGN

Y.e2eqos.2An end-to-end QoS architecture based on centralized resource control for IP networks supporting NGN services

Y.123.qosA QOS ARCHITECTURE FOR ETHERNET-BASED IP ACCESS NETWORK

Y.ipaqos A QoS Framework for IP based access networks

Y.NGN-NHNperf

Network performance of hybrid networks in NGN

JRG on NGN2. NGN Standardization


• 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

WG Area Deliverables

WG 1

SR (Service Requirements)

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

WG 2

FAM (Functional Architecture, and Mobility)

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

WG 3

QoS (Quality of Services) TR-123.qos, TR-msnniqos, TR-NGN.qos, TR-

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

WG 4

CSC (Control & Signalling)

TRQ.IP QoS.SIG.CS1

WG 5

SeC (Security Capability) NGN Security Framework

WG 6

Evol (Evolution) Evolution of Networks to NGN, PSTN evolution to NGN

WG7 FPBN (Future Packet-based Network)

Future Packet Network requirements



WG Title Current Draft TargetDate

Release Status

1 NGN Scope FGNGN-OD-00037 1Q05 1 D

1 Services & Capabilities FGNGN-OD-00038 1Q05 1 D

1 Mobility Services & Capabilities TBD 1Q05 1 P

1 NGN Release 1 general requirements FGNGN-OD-00036 2Q05 1 D

1 NGN general requirements (release-independent requirements)

TBD 2Q05 RI P

1 NGN general services and capabilities (release independent)

TBD 2Q05 RI P

D

2 Requirements & Architecture for NGN FGNGN-OD-00035 1Q05 1 D

2 Functional Requirements for NGN Mobility

FGNGN-OD-00042 1Q05 1 D

2 Functional Requirement for Soft Router FGNGN-OD-00043 TBD 2 D

2 Customer Manageable IP Network FGNGN-OD-00044 TBD 2 D

NGN Focus Group2. NGN Standardization

Deliverables on Service Requirements and Architecture


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

FGNGN-OD-00010 Feb. ’05 1 D

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

FGNGN-OD-00027 Feb. ‘05 1 D

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

FGNGN-OD-00045 Feb. ‘05 RI D

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

FGNGN-OD-00025 Feb. ‘05 RI D

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

FGNGN-OD-00032 July ‘05 1 D

3 A QoS architecture for Ethernet networks (TR-enet)


3 A QoS control architecture for ATM-based IP access networks (TR-atmipa)

TBD July ‘05 1 P

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


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


3 Performance measurement and management for NGN (TR-pmm)

FGNGN-OD-00024 May ‘05 1 D


Deliverables on Quality of Services


4 TRQ.IP QoS.SIG.CS1 FGNGN-OD-00030 TBD TBD D

5 NGN Security Framework FGNGN-OD-00034 TBD TBD D

6 Evolution of Networks to NGN FGNGN-OD-00039 1Q05 1 D

6 PSTN Evolution to NGN FGNGN-OD-00040 1Q05 1 D

7 Problem Statement FGNGN-OD-00028 4Q04 TBD D

7 Requirements FGNGN-OD-00029 2Q05 TBD D

7 High Level Architecture TBD 3Q05 TBD P

7 Candidate Technologies TBD 3Q05 TBD P


Deliverables on Signaling, Security, Migration and Future


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 NGN

3. Key Features


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

Application

CDR

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 Model3. Key Features


Customer Manageable Capability3. 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


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

Quality of Experience

Quality of Service Network Performance

User oriented Provider oriented

User behaviour attribute

Service attribute Connection/Flow element attribute

Focus on user-expected effects

Focus on user-observable effects

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

User subject Between (at) service access points

End-to-end or network elements capabilities

QoS Aspects of NGN3. Key Features


Mobility Aspects of NGN3. 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)

Node

IntermediateNode

MobileTerminal

MobileTerminal

BorderNode

BorderNode

AccessNode

MobileTerminal

FixedTerminal

(1)

(2)

(3)

(4)Mobile

Terminal

(4)

NNI

Intra-AN Mobility

Inter-AN Mobility

Inter-TE Mobility

Inter-TE Mobility

Inter-CN Mobility


Evolution Aspects of NGN3. Key Features

• 4 Scenarios for PSTN evolution to NGN

P S N

PBX43AN42

AG41 New AG

PBX23AN22

AG21 New AG

TG TG

C S

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


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

TDM basedNetwork

Packet basedNetwork

CGN

MobileAccess

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 Next

4. Future Issues


Transport

Services

Telephone 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. atmipa

TR. 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

4. Future Issues


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 Releases

4. Future Issues

NGN Release 1


UsersTerminals /Appliances

ServiceProviders

ProgramProviders

NGN Infrastructure

Content-based Delivery Network Infrastructure Service Broker Infrastructure Information Broker Infrastructure

ConvergenceIntegrationMobility (Uniq. ID)

Simplified Realization Model of NGN

5. Conclusion

SERVICE

BRK

INF

BROKER


NGN : Nothing new, but upgrading, adding Value

5. Conclusion

Up-gradingCurrent

Infrastructure

Next Generation-Water ParkCurrent Generation-Beach

AddingValue

ngn in itu-t

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