Architectures & Interworking in ITU-T SG13

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KoreaTelecom

Architectures & Interworking

in ITU-T SG13

14 May 2001

Chae-Sub, LEE

(Korea Telecom)

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KoreaTelecom

Contents

1. Scope of WP 2/13

2. Questions in WP 2/13

3. Future Evolution Trend

4. Role & Activities of WP 2/13 study

5. Vision of WP 2/13

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1. Scope of WP 2/13

GII

64 kbps basedISDN

ATM/B-ISDN

IP basednetwork

Multi-Protocolbased network NGN

INTERWORKING

ARCHITECTURE

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KoreaTelecom

Scope and impacts of Architecture Work

Service requirementsand its Provision

Facility Network

•Identification of Resources•Assignment to Functional Group•Identification of Reference Points•Specifying required Capabilities

•Principles

•Business Model

•Logical Model / Framework

•Functional Model

•Implementational Model

•Specification of capabilities

•Scenarios

Architecture Work

ToPDown

BottomUp

LongTerm

ShortTerm

•PC based Multimedia•Mobile communication•Home/Personal video•Netizen

• Router/switch• Soft switch• wireless access, xDSL/WDM

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Question Title

1/13 Principles, Requirements, Frameworks and Architectures for an Overall Heterogeneous Network Environment

5/13 Network Interworking including IP Multiservice Networks

10/13 Core Network Architecture and Interworking Principles

13/13 Interoperability of Satellite and Terrestrial Networks

14/13 Access Architecture Principles and Features at the Lower Layers for IP-Based and Other Systems

16/13 Telecommunication Architecture for an Evolving Environment

2. Questions in WP 2/13

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Circuit based

Electronic based

Packet based transport

Optic based transmission

Integrated Telecommunication Infrastructure

Voice

Data

Datainc.

VoiceIntegrated Service

Clientto

Server

Endto

EndUser friendly control

Full Open and Competition Environments

Telecom. Business

Broadcasting BusinessTele-Broadcasting Business

2. Future Evolution TrendChange of Environment

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KoreaTelecom

30

1996 199919981997 20032000 2001 2002

Fixed telephone serviceCellular & PCS

Internet service users

40

20

50

10

Pen

etra

tio

n

(%)

Market Changes and its Push

Circuit based

Packet over

Circuit

Packet based

Circuit over

Packet

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Expected Future Transition Trend

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.



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Server based Configuration

Net. A

Net. CNet. D

Net. B

Service /Application 1




Connectivity Network

NamingServer

PolicyServer

FeatureServer

Subscrib.Server

ResourceServer

Server (Middleware)Network





Service /Application

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Extension of Core Network Functions

Switching

Transmission

Past

Switching

Transmission

Brokering

Today

Routing Switching

Transmission

TrafficPolicing

ResourceArranging

MediaAdaptation Brokering

Near Future

Routing

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KoreaTelecom

Switching

Routing

Backbone Transmission NetworkBackbone Transmission Network

Access Switching Access Switching NetworkNetwork

Access Access NetworkNetwork

Accessing- ISDN- ADSL- Cable Modem- FLC- FTTH

Addressing- IPv4, v6- E.164- NSAP

NetworkNetworkManagementManagement

Multiplexing- IP- ATM- F/R- SDH/PDH- WDM

Transmission- ATM- SDH- WDM

Switching & Routing- IP- MPLS- ATM

ManagementPlatform- CMIP- SNMP- JAVA- CORBA- DCOM

Backbone Switching NetworkBackbone Switching Network

Diversity of Access Technologies

Policing

Policing

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Computer/Consumer Technologies

Broad-castingInfra.

Telec.Infra.

IP Platform or Others

Structural Model of Convergence

Tele-gaming

TVMail

Interac.TV

WebTV/FM

TVInternet

E-Comm.

New Technologiesand their Products

Interworking between twoInfrastructures andtheir convergence

Networking Technologiesand their Adaptations

New Applications and theirService Interworking

RelationsEnterprise Model Regulation

UserOperator

ProgramProvider

RegulatorPossible Convergence Model of Tele-Broadcasting

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4. Role and Activities of WP 2/13 Study

Interconnection

Architecture

Interworking

• Develop Framework Architecture for RPOI• Identify Reference Point of Interconnection• Specify Attributes and Requirements of RPOI

• Framework Architecture of GII and Principle• Develop Telecom. Archit. For Evolv. Environ.• Study of New Reference Model• Develop Framework of IP based Network• Develop Automatic Transport Net. Archit.• Develop Access Network Architecture• Specify Network Capabilities for IP and others

• Develop Framework for Interworking• Specify Interworking Functions btw. Different Networks and Services

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KoreaTelecomFramework for RPOIs (Refer Rec. Y.140)

T1317130-00

carry user plane and control plane information carry management plane information

Conceptual Reference Point for Interconnection (cRPI)

Multiple Role, Single Player

Long Distance Network

Local Network

d d

c

c

c

b b

b

a a

x

Single Role, Multiple Players

a

b

c

x

x

a

Customer Network

q

q

q

q

q

x

q

q

e

q

e

q

LDN Management

OtherLong Distance Networks

Transit NodeNOTE 2

SP/BrokerClass 3

SP/BrokerClass 3

Other Local NetworksNOTE 1

CommonLDN

and LNMgmt.

Local NodeNOTE 3

SP/BrokerClass 3

AN Management

Other Access NetworksNOTE 1

SP/BrokerClass 2

SP Class 1

CN Management

SP Class 1

Access Network

a

q

q

LN Management

NOTE 1 - This could use, e.g. twisted pair, coaxial cable, wireless and support ATM, FR, IP, etc. NOTE 2 - Transit Switch and/or RouterNOTE 3 - Initial point of attachment (Service Node/Local Switch)

cRPI a Point of connection of a customer to a public networkcRPI b Initial point of connection to a switched network, i.e. to gain access to switched servicescRPI c Point to connect an SN to other SNs or to services of the Transit NetworkcRPI d Point of interconnecting Transit NodescRPI e Point to connect an SP/broker class 2 to a (transport) networkcRPI q Point to connect a network to its management system/TMNcRPI x Point to interconnect Management Systems/TMNs

SP/BrokerClass 2

SP Class 1

(106758)

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• identify the functions and behaviors between the user and network facilities in

terms of middleware services ;

• ensure adequate de-coupling between end user and network technologies;

• define functions and behavior of middleware components;

• identify points at which open interfaces might be defined.

Contact Agent

Locates partyprofiles anddefinescommunicationrequirements

Matches end-pointcapabilities andappliestransformationsacross dissimilarmedia

Coordinatescommunicationsession managementservices and definestransportrequirements

Exchange Agent

Negotiates andsecures transportservices that meetthe needs of thecommunicationsession

Transport Agent

PartyIdentification

SessionManagement

TransportSelection

Information Communication Architecture (Rec.Y.130)

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G.astn

ASTN Architecture ASTN Control Plane

Discovery Signaling Routing CAC Link management

Restoration Transport

G.ndisc G.sdisc

G.dcm Modified existing or G.otnrtg

G.otncac G.otnlm Modified existing or G.otnres

G.959.1/ G.709/G.798/

G.dcn/etc

G.ason

Work plan of Automatic Switched Transport Network

Consent at this May SG 13 Meeting

Consent at this October SG 15 Meeting

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Interworking between Telecom Networks and IP based Network

ATMNW

ATMNW

MPLS Network

LSR

LSRIWF

IWF

• Transport Plane Interworking

• Control Plane Interworking

• Management Plane Interworking

Ref. Rec. Y.1401

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KoreaTelecom5. Vision of WP2/13

• Application of IP technology into Telecom infra and• specify Interworking between IP and Telecom service/network

IP IssuesPacket based infrastructure

• New architecture for full Packet based infrastructure (inc.Voice)• Migration path from Circuit based to Packet based infra (inc. Interworking)• Service and network capabilities for providing Packet based services• New access technology, OAM and Performance study based on full Packet infra

Documents

Architectures & Interworking in ITU-T SG13