NGN Developments in ITU-Tmmlab.snu.ac.kr/links/hsn/workshop/hsn2005/document/session1/1_3.… · NGN Developments in ITU-T Chae ... zUnified service characteristics for the same service

International Telecommunication Union

HSN 2005. 26 ~ 28 January Jeju, Korea

NGN DevelopmentsNGN Developmentsin ITUin ITU--TT

Chae-Sub, LEEChairman of FG NGN

231.01.2005HSN 2005, 26~28 January 2005, Jeju, Korea

Contents

1. NGN Standardization2. Definition and Key Features3. Services and Capabilities4. Architectures and Functions5. Example of NGN Realization6. Deliverables & Releases Plan7. Conclusion


1. NGN Standardization

NGN Standardization

ITU-T

NGN

WS

(01 ~ 03)

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

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

SG 2

SG 4

SG 9

SG 11

SG 12

SG 13 SG 15

SG 16 SG 17

Q1 Q5 Q10

Q16 Q63GPP/2

xDSLForum

ATIS ETSI

TTA

TTC

CCSA

ITU-T FG NGN (’04.6 ~ ’05. 5)


NGN Focus Group1. NGN Standardization

• 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

• 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

WG Area Deliverables

WG 1 SR (Service Requirements) NGN Scope, Releases 1 / General Requirements, Servieand 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 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 Bearer Network)

Future Packet Network requirements


2. Definition and Key Features

Definition of NGN

Definitionof NGN(DraftRec.

Y.2001)

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 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.

Target Standards Area

Convergence btw. Fixed & MobileGeneralized Mobility

Open Access I/FUnfettered Access

Architecture and Open APISeparation Services with Transport

QoS-enabled TransportManageable Broadband

Multiple-Broadband


Key Features of NGNPacket-based transfer;Separation of control functions among BC, call/session, and application/ service;Decoupling of service provision from transport;Support for a wide range of services based on service building blocks;Broadband capabilities with end-to-end QoS;Interworking with legacy networks via open interfaces;Generalized mobility;Unrestricted access by users to different service providers;A variety of identification schemes;Unified service characteristics for the same service as perceived by the user;Converged services between fixed/mobile;Independence of service-related functions from underlyingtransport technologies;Support of multiple last mile technologies;Compliant with all regulatory requirements (e.g. emergency, privacy, lawful interception, etc.)

2. Definition and Key Features


3. Services and Capabilities

General S&C aspects of NGN

Defined Service TypesInteractive-based Services (video-phone, white-boarding,PoN, IM etc.;Non Interactive-based Services (Content delivery, Sensor Net., etc.);Both Interactive and Non Interactive-based Services (VPN, Presence& General Notification services, Hosted and Transit services etc.);Network Services : BTS(P-P, P-MP, MP-MP etc), ETS (BTS+QoS guaranty,Advanced Security, Access to VPN etc.)

Service Layer Transport Layer

Basic Services

Point-Point voice, fax and video servicesMulti-point voice, fax and video services

Bandwidth and circuit wholesaling

Enhanced Services

Content Delivery servicesPresence ServicesMulti-media conferencing

Virtual Private connectivity



General S&C aspects of NGN

Defining CapabilitiesAddressing, Naming and Directory services;OAM requirements (Protection Switching, Re-routing req.);Mobility, QoS , Traffic and Resource ManagementSecurity, Privacy, Identification, authentication & authorizationInteroperability and InterworkingAccess Network RequirementsNetwork migration aspectsAccounting, charging and billingPolicy and Profile managementUser device and Content delivery managementService Creation and Service reliabilityRegulatory Requirements



General Mobility aspects of NGN

Mobility Requirements in NGNability to change access point and/or terminal;ability to get access from any network access point, including all access technologies identified above;ability to get services in a consistent manner, subject tothe constraints experienced in their current situations;user availability and reach ability should be known to net. functions, and possibly to services and applications (including by a third party).

Service Capabilities for NGN Mobilitysupport of personal (User and Service) mobility;support of terminal mobility;support of both personal and terminal mobility



General QoS Requirements of NGNTwo perspectives for NGN QoS

“Vertical” mechanism : linking the upper and lower layerQoS mechanisms (e.g. diffserv, etc)“Horizontal” mechanism : linking the lower layer QoS control between different domains and networks.

Considerations for NGN QoSEnd-to-end QoS class definition for telephonyover packet networks;End-to-end multimedia QoS class definition framework anda method of Identifying QoS classes of individual media components;Specification of how to use lower layer QoS mechanism to achieve Upper layer QoS within the network;Inter-domain lower layer QoS control;End user perception of QoS.



Customer Manageable Requirements

Definition of Customer Manageable networkNetworkNetworkUsersUsers

Network ProviderNetwork Provider

<Menu>How to use Network

End user create their own servicesand network configurationsEnd user choose some control & mngt. funct. over their own network.

End User Service RequirementsAvailability (e.g., 99.999 %)Response timeService blocking probability including network access blockingService priority and QoS/CoS

Network Provider RequirementsNetwork Access Capabilities (Assignment of network addresses etc.)Network Performance Parameters (Round Trip Delay, Availability etc.)

Application Provider RequirementsIdentification of user, service, and terminal typeRedundancy and Clustering of serversInformation query and navigation including DB management


4. Architectures and Functions

Overall NGN Architecture

Transport stratum

Service stratum

Mediahandlingfunctions

Core Transportfunctions

Core Transportfunctions

AccessTransportfunctions

AccessTransportfunctions

Networkentry

functions

Othernetworks

Othernetworks

Customerfunctions

CustomerDB

functions Service and controlfunctions

Application functions

Gatewayfunctions

Transport adaptation functions

Control

Media

NNIUNI

Networkentry

functions

Note: Charging and billing functions and Management functions are applied to both Service and Transport strata



Functional Architecture Model

Management

Transport Adaptation

Transport

Transport Resource / Policy Control Function

TMGF

SGF

Transport Resource &

Enforcement Functions

TrafficMeasurement

Function

PGF

T. Authentication &Authorization

Function

Mobility Support Function

T.Network Access Control Function

AMGF

TerminalFunction

Access Relay Function

Session & CallControl

Application

S.Authentication & Authorization Function

Application Gateway Function

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

PGCF

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

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

MGCFAGCF

Session Control FunctionS-19

Media Resource Control Function

Man

agem

ent F

unct

ion


Grouping of NGN Functional Entities4. Architectures and Functions

Resource and Admission Control Functionality

RACS

Based on IMS

IP ConnectivityAccess NetworkAnd related functionality

Based on IMS

IP ConnectivityAccess NetworkAnd related functionality

Network AttachmentFunctionality

NASS

Other Multimedia Components …Streaming Services

(RTSP based)

Applications

Core transport Network

Access Transport Network

NGN Terminals

CustomerNetworks

UserProfiles

Other N

etworks

LegacyTerminals

GW

PSTN / ISDN Emulation(SIP-I based)

IP Multimedia Component ( IMS)

(SIP based)


Relationship IMS with NGN Func. Entities4. Architectures and Functions

IMS Functions NGN Functions1. CSCF Session Control Function

2. P-CSCF Session Control Proxy Function

3. MGCF MGCF

4. MGW TMGF

5. MRFP MRPF

6. MRCF MRCF

7. BGCF PGCF

8. IP-CAN Packet Transport Function (Access Part)

9. AS ASF

10. UE Terminal Function

11. HSS Terminal Function

12. Charging Function NMS

13. SLF ? ?


Architecture Model for MM4. Architectures and Functions

NIMF : Network Inf. Management detecting FunctionRF : Registration client FunctionAMF : Address Management client FunctionAAAF : AAA FunctionPF : Paging FunctionRMMF : Regional Mobility Management FunctionGF : Gateway FunctionMPMF : Multi Path Multicast management Function

SPMF : Service Profile Management Function

NEMF : Network Environment Management Function


Configuration of Func. Entities for MM4. Architectures and Functions


Mobility Aspects of NGNMobility

ServiceContinuity

ServiceDiscontinuity

SeamlessHandover Handover Roaming Portability

Intra-AN Mobility

Inter-AN Mobility

Inter-TE Mobility

Inter-TE Mobility

Inter-CN Mobility




Mobility Aspects of NGN

APAP

LMA

Intra-Access Network RadioLevel Mobility

Intra-Access Network Level Mobility

Local Area

Intra-Access Network Level Mobility

Wide Area

SGSN SGSN

GGSN

BTS BTS BTSBTS

Inter-Access Network Level Mobility

FA FA

FA

Service LevelMobility

IMS

PSTN / SS7

GMSC

DVB-GW

AP DVB-TX

WLAN / WiMAX DVB / ISDB-T GPRS/UMTS Data

CellularVoice

IPv4 MS

HA

AP

MSCLMA

IPv6 MS + CCoA

AP

IPv4 MS + CCoA

PDG

ESS ESS

RNC/BSC RNC/BSC

RNC/BSC



Ref. Architecture Model of CMIP

UNI

TransportAgent

Functions

Customer Premises Network Manageable IP Network

TransportLayer

ServiceLayer

ServiceAgent

Functions

TransportU-Plane Functions

TransportM-Plane Functions

TransportC-Plane Functions




ServiceU-Plane Functions

ServiceM-Plane Functions

ServiceC-Plane Functions

















Level of Customer Manageability4. Architectures and Functions

Level Descriptions Features Remarks

0 No Management

No monitoring,No Resource

Control

No mechanism to detect network fault andcongestion. No mechanism to control network resources

1Overall Network

Resource Management

Overall monitoring,

No Resource Control

Notify overall network fault and resource status by network providerNo resource control by the end user

2Group levelResource

Management

Group level Resource

Monitoring &Control

Notify group level network fault and resource status by network providerEnd user manages the group level resources

3IndividualResource

Management

Individual level Resource Monitoring &

Control

Notify individual network fault and resourcestatus for end-to-end connectivityEnd user manages the end-to-end resources


Ref. Configuration of QoS, NP and QoE4. Architectures and Functions

Man-Machine Interface

Network Interface

Network Interface

Man-Machine Interface

CNAN ANCPN CPNTE TE UserUser

Network Performance for NGN

Quality of Service for NGNQoE QoE

Quality of Experience Quality of Service Network Performance

User oriented Provider orientedUser 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


End-End QoS Architecture4. Architectures and Functions

Reference Point Possible candidate protocols examples

RP1 RSVP, IETF NSIS (still working on), other new protocolsRP2 Like COPS-PR, Diameter, H.248, SNMP…UNI-C,NNI-C QoS signaling protocols, like RSVP, IETF NSIS (still working

on), and other new protocolsUNI-S, NNI-S Call/Session control protocols, Like SIP/SDP,H.323/H245.


End-End QoS Control Scenarios4. Architectures and Functions

Centralized Scenario Distributed Scenario

Hybrid Scenario


Resource Admission and Control Func.4. Architectures and Functions

Provide QoS control (inc. Res. reservation, Admi. control and Gate control), NAPTand/or FW traversal control func. over access and core transport networks.Admission control involves checking authorisation based on user profiles, SLAs, operator specific policy rules, and resource availability within access & core transport.Act as the arbitrator for resource negotiation and allocation between Application Functions and Transport Functions.

Application Functions

RACF

Transport FunctionsCPE

NAAF Functions in other domains


Functional Architecture Model of RACF4. Architectures and Functions

Core RACFAccess RACF

Resource Mediation

Core Transport

Application Functions

Access Transport CPN

Network Access Attachment Functions

Oth

er n

etw

ork

s

IBCF

I-BGF

M-PDF

ENF A-BGF

I-PDF

C-TRCFA-TRCF

I dG q

Go G3

I1

SCPF

C3

X2X1 X3

G2

X4

R-BGF ANF

C1 C2

SCF

R-BGF － Residential Border Gateway FunctionANF － Access Node Function, ENF － Edge Node FunctionSCF － Session Control Function, SCPF － Session Control Proxy FunctionIBCF － Interconnection Border Control FunctionM-PDF － Mediation Policy Decision FunctionI-PDF －Interconnection Policy Decision FunctionA-TRCF －Transport Resource Control Function over access networkC-TRCF －Transport Resource Control Function over core networksA-BGF － Access Border Gateway FunctionI-BGF － Interconnection Border Gateway Function


IP QoS Signaling Functional Model4. Architectures and Functions

The Interfaces can be Either Path-Coupled or Path-Decoupled

SeCFE Session Control Functional Entity

SFE Switching Functional Entity

SvCFE Service Control Functional Entity

BCFE Bearer Control Functional Entity

CC Connection Control

CCI Connection Control Interface


Evolution Aspects of NGN• 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



5. Example of NGN Realization

Example of NGN Realization 1

Transportstratum

ISP/ASPISP/ASP

Accessdependentportion(Access network)

AccessIndependentportion(Core network)

PC-phone

Customernetwork

Sessionrelated

capability

Service platform

HGW

PC

Edge node

Core node

Application service functions

HGW: home gatewayPSTN: public switched telephone network

Otheraccesses

Opticalaccess

TV

HGW

Information appliance

Servicestratum Presence

relatedcapability

Customerrelated

capability

PSTNPSTN

xDSLWireless

LAN




MetroEthernet

3G RAN

ISCO

SASSF

PresencePTT

Voice M

ailSM

SM

MS

Streaming

Converged Services and Platform

s

MRFC

I-CSCF

LegacyGMSC

ConvergedServices

IMS

MGCF

Converged Service

Interfaces

SGW

PSTNPLMN

MRFP

S-CSCFP-CSCF

PDF

PS BackboneNetwork

RNC

SGSN

Service ProviderData Network

HA

BroadcastAccess Network

DVB / ISDB-T RAN

LegacyMSC/VLR

PDG/WAG

BSC

2G RAN

PDG/WAG

HSS

AAA

Network DBs

Databases

GGSN

MGW

WiFi Hotspot

DNS

DHCP

INParlay

SIP-AS

WiMax RAN

TransportNetwork

AccessNetwork

LegacyHLR

CS BackboneNetwork

BGCF

PublicInternet

(CDMA systems are similar toGPRS and UMTS systems shown)

BMSC

MetroEthernetMetroEthernet

3G RAN

ISCO

SASSF

ISCO

SASSF

PresencePTT

Voice M

ailSM

SM

MS

Streaming

Converged Services and Platform

s

MRFC

I-CSCF

LegacyGMSC

ConvergedServices

IMS

MGCF

Converged Service

Interfaces

SGW

PSTNPLMNPSTNPLMN

MRFP

S-CSCFP-CSCF

PDF

PS BackboneNetwork

RNC

SGSN

Service ProviderData Network

HA

BroadcastAccess NetworkBroadcastAccess Network

DVB / ISDB-T RAN

LegacyMSC/VLR

PDG/WAG

BSC

2G RAN

BSCBSC

2G RAN

PDG/WAG

HSS

AAA

Network DBs

DatabasesDatabases

GGSN

MGW

WiFi Hotspot

DNS

DHCP

INParlay

SIP-AS

WiMax RAN

TransportNetwork

AccessNetwork

LegacyHLR

CS BackboneNetwork

BGCF

PublicInternetPublicInternet

(CDMA systems are similar toGPRS and UMTS systems shown)

BMSC




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


6. Deliverables and Releases Plan

NGN Deliverables from FG NGN

WG Title Current Draft TargetDate

Release Status

1 NGN Scope FGNGN-OD-00070 1Q05 1 S

1 Services & Capabilities FGNGN-OD-00067 1Q05 1 S

1 NGN Release 1 general requirements

FGNGN-OD-00071 2Q05 1 D

1 NGN general requirements (release-independent requirements)

TBD 3Q05 RI P

1 NGN general services and capabilities (release independent)

TBD 3Q05 RI P

D

2 Requirements & Architecture for NGN

FGNGN-OD-00065 2Q05 1 D

2 Functional Requirements for NGN Mobility

FGNGN-OD-00060 2Q05 1 D

2 Functional Requirement for Soft Router

FGNGN-OD-00043 TBD 2 D

2 Customer Manageable IP Network FGNGN-OD-00061 TBD 2 D




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

FGNGN-OD-00010 Mar ’05 1 3

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

FGNGN-OD-00027 Mar ‘05 1 3

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

FGNGN-OD-00045 May ‘05 RI 3

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

FGNGN-OD-00025 May ‘05 RI 3

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

FGNGN-OD-00076 July ‘05 1 3

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


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-00073 May ‘05 1 3

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

TBD July ‘05 1 P




4 Signalling requirements for IP QoSTRQ.IP QoS.SIG.CS1

FGNGN-OD-00079 Dec.‘04 1 A

5 Guidelines for NGN Security FGNGN-OD-00059 2Q 05 TBD D

5 NGN Release 1 Requirements FGNGN-OD-00057 1Q 05 1 S

6 Evolution of Networks to NGN FGNGN-OD-00049 1Q05 1 D

6 Scenarios for PSTN/ISDN evolution to NGN

FGNGN-OD-00050 1Q05 1 D

6 PSTN/ISDN emulation and simulation scenarios

FGNGN-OD-00051 1Q05 1 D

7 Problem Statement FGNGN-OD-00028 4Q04 2 D

7 Requirements FGNGN-OD-00055 2Q05 2 D

7 High Level Architecture FGNGN-OD-00056 3Q05 2 D

7 Candidate Technologies TBD 3Q05 2 P



Plan for the NGN Releases

• IMS (Release 6 based) would be incorporated into NGN Standards• IMS has release based approach (already start Release 7)• FG NGN also agreed to get similar approach like “Release”

NGNRelease 1

NGNRelease 2

NGNRelease 3

IMS (Rel.6) Beyond IMS

NGN Release 1 NGNRelease 2

NGNRelease 3

I/F 1 I/F 2

(Rel.7 ?)

(?)(?)

(?)(?)



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

NGN Release 1 NGNRelease 2

NGNRelease 3

I/F 1I/F 2End of 2005 (TBD)

End of 2006 (TBD)(?)

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

•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 Releases of NGN



Example guidelines of NGN Releases

Items Release 1 Release 2

QoS Guaranteed QoS(Service classes ?)

On-demand (BW, Priority…)

Terminal MoB Roaming Handover btw.

Access Networks

Service MoB Transparent (with

Service Set)

Transparent (with Additional Service Set)

User MoB Support PID

Access Types xDSL, xPON, Gigabit Ethernet, Cable, WLAN, 3GPP/2 based mobile, Broadcast (DVB, ISDB-T)

Ethernet over Optics

Migration PSTN/ISDN Emulation PSTN/ISDN Simulation

Mobility/ Management


7. Conclusion

Impacts to Policy and Regulation base

• 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.

Resource-based Pol./Reg.

Video

NGN

Voice Internet

IP (Future Packet ?) Platform

xDSL/Optic based Fixed-Mobile

MMPol.Reg.

Pol. XReg. x

New Policy RegulationEnvironment (Horizontal)

Service-based Pol./Reg.

Phone

PSTN

Internet

IP-Net

M-Ph

Mobile

Pol. AReg. a

Current Policy RegulationEnvironment (Vertical)

Pol. BReg. b

Pol. CReg. c


7. Conclusion

NGN triggering Convergence

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


7. Conclusion

Standards for Near Generation, not Next

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.


7. Conclusion

NGN : Nothing new, but upgrading, adding Value

Up-gradingCurrent

Infrastructure

Current Generation-Beach

AddingValue

Next Generation-Water Park

Documents

NGN Developments in ITU-Tmmlab.snu.ac.kr/links/hsn/workshop/hsn2005/document/session1/1_3.… · NGN Developments in ITU-T Chae ... zUnified service characteristics for the same service