Draft EECM523 Note 8 - NGN

8/8/2019 Draft EECM523 Note 8 - NGN

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Advanced Applied Telecommunication

Systems (EECM523)

Draft Note 8 Next Generation Network(NGN)

ByCheah Cheng Lai


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1. Introduction


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What is NGN

Next generation networking (NGN) is a broad term todescribe some key architectural evolutions intelecommunication core and access networks that will bedeployed over the next 510 years.

The general idea behind NGN is that one networktransports all information and services (voice, data, andall sorts of media such as video) by encapsulating theseinto packets, like it is on the Internet.

NGNs are commonly built around the Internet Protocol,and therefore the term "all-IP" is also sometimes used todescribe the transformation toward NGN.

3Source: Wikipedia (4 Mar 2010)


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Central Theme of NGN - Convergence

As the current services are supported by multiplenetworks, one of the major task toward NGN is

convergence . How the convergence may take place is depending

on the nature of the network operators, for examples

Fixed telephone operator convergence of PSTN and IPnetworks.

Mobile telephone operation convergence of GSM and IP

network.


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Why Convergence?

The primary driver is cost reduction!

1. Packet switching is more efficient than circuit switching thus supporting more traffic and more users.

2. Continuing reduction in the cost of electronic for packet-switching based electronics.

3. Support VoIP bypassing normal toll operation.4. Improved productivity, from both operations and the ICT

staff by administrating only a single network.5. Application As we have only a single network, many new

applications can be easily deployed with the fasterdeployment cycle to the end user.


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Network and service convergence

Network convergence - the efficient coexistence of telephone, video and data communication within a

single network. The use of multiple communicationmodes in a single network offers convenience andflexibility not possible with separate infrastructures.

Network convergence is also called mediaconvergence.

Service/device convergence new devices are ableto supports many different services.

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2. ITU-T Recommendation for NGN


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Definition of NGN: Y.2001

ITUITU--T SG 13: Rec. Y.2001T SG 13: Rec. Y.2001

A NGNNGN is a packetpacket- -based networkbased network able to provide

telecommunication services and able to make use of multiplemultiplebroadband,broadband, QoSQoS--enabled transport technologiesenabled transport technologies and in whichserviceservice--related functionsrelated functions are independentindependent from underlying

transporttransport- -related technologiesrelated technologies . It enables unfettered accessunfettered access forusers to networks and to competing service providers and/orservices of their choice. It supports generalized mobilitygeneralized mobility whichwill allow consistent and ubiquitous provision of services tousers.


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AccessIndependent

(CoreTransport)Network

Service/Network

ControlPlatform

Application

Multi-layer Service Edge

PresenceQoS/TrafficControl

RADIUS

SIP

SingleSign-On Server

AccountingMulti-point

video-conference

Home Agent

Certification Authority

NWdefense

HGWmanagement

ONUONU

Service Node

ADSL modem

Core Node

MCWDMDSLAM

MC

MC

MC

Distribution Function

BusinessUser

HGW

OLT

V-ONU

HE

V-OLT

VisualSystem

Mass User

OtherNetwork

GWPSTN

Community CollaborationCommunity Collaboration ContentsContents CommerceCommerce

Ubiquitous Network User

Network

Access

DependentNetwork BS

RMC

MSC

Transportstratum

Servicestratum

GW

GW

Wireline AccessRAN HE: Head endMSC: Mobile Switching

CenterRMC: Radio Media

ConverterBS: Base StationDSLAM: Digital Subscriber

Access ModuleOLT: Optical Line TerminalONU: Optical Network UnitMC: Media Converter

NNI

UNI

Example of NGN Realization

Chae-Sub, LEE - Chairman of FG NGN - NGN Technical Workshop 14 ~ 15 March 2005, Jeju, Korea


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3. Convergence for Fixed TelephoneNetworks


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The First Step of Convergence for FixedTelephone Network is VoIP

The challenge of VoIP is to provide the efficiency of a packet-switched network while providing the similar voice quality of a circuit-switched network.

TDMCircuit

SwitchedNetwork

IP PacketSwitchedNetwork

NGNVoice / Data / Multimedia

Provide adequate voicequality

Inefficient use of networkbandwidth

Much more efficient

The quality is an issue


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The Legacy Network (Example)

TDM Time division multiplexing

Kuala Lumpur

TDMnetwork

Penang

Johor Baru

KuantanPSTNSwitch / Exchange

PSTNSwitch / Exchange




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The Converged IP Network (Example)

Kuala Lumpur

IPnetwork

Penang

Johor Baru

Kuantan

Media Gateway

Media Gateway

Media Gateway

Media Gateway

Softswitch(Media Gateway Controller)

Direct replacement of PSTN switch with media gateway and adding of soft-switch.


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Next Step - Adding New Services

Kuala Lumpur

IPnetwork

Penang

Johor Baru

Kuantan

Media Gateway

Media Gateway

Media Gateway

Media Gateway

Softswitch

SIPApplication

Servers

SIPSIP

SIP Phone

SIP

SIP Phone

SIP SIP Sessioninitiation protocol

Benefit: 1) New services can be added easily2) Faster deployment cycle for new services.


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4. Convergence for MobileTelephone Networks


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3GPP defining migration from GSM to UMTS (W-CDMA) Core network evolves from GSM-only to support GSM,

GPRS and new W-CDMA facilities

3GPP Release 99 (2000) Adds 3G radios3GPP Release 4 (2001) Adds all IP- Core Network3GPP Release 5 (2002)

First IP Multimedia Services (IMS) and HSDPA3GPP Release 6 (2004) Add HSUPA and MBMS - media

The similar convergence approach for fixednetworks is also happen for mobile networks

Source: Sum, Tan, Yap, Chan, Lee and Thi, Group 4 Presentation Slides


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IMS For operator to deliver new data services over the packet switching domain.


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3G Partnership Project (3GPP)3GPP Release 4 (2001)

Adds all IP- Core Network3GPP Release 5 (2002) First IP Multimedia Services (IMS) and HSDPA

3GPP Release 6 (2004) Integrates WLAN, adds HSUPA and MBMS.3GPP Release 7 Effort to provide better QoS (lower lattency, jitter). Adds

voice call continuity (VCC), additional fixed/mobileconvergence (FMC) features, and HSDPA+.

How about the Future?


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Acronyms

FMC Fixed/Mobile Convergence GigE Gigabit Ethernet HSDPA High-Speed Downlink Packet Access HSUPA High-Speed Uplink Packet Access IMS IP Multimedia Services MBMS - Multimedia Broadcast Multicast Service

NGN Next Generation Network QoS Quality of Service SIP - Session initiation protocol UMTS Universal Mobile Telecommunications System VCC Voice Call Continuity VoIP Voice over IP W-CDMA Wideband CDMA


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Announcements

No class on next Tuesday and Thursday (9 & 11 Mar 2010). The Group 6 presentation (FTTH) shall be remained on next

Friday (12 Mar 2010).

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Date Topic

22-1-2010(Friday)

9.00 to 9.20 am Group 1 (RFID)9.30 to 9.50 am Group 2 (ZigBee)

9-2-2010(Tuesday)

9.00 to 9.20 am Group 3 (Bluetooth)9.30 to 9.50 am Group 4 (WiFi)

12-2-2010

(Friday)

9.00 to 9.20 am Group 5 (WiMAX)

9.30 to 9.50 am Group 8 (BPL)5-3-2010(Friday)

9.00 to 9.20 am Group 9 (xDSL)9.30 to 9.50 am Group 11 (DWDM)

12-3-2010(Friday) 9.00 to 9.20 am Group 6 (FTTH)


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Thank you

Documents

Draft EECM523 Note 8 - NGN