3g network convergence 1648

8/2/2019 3g Network Convergence 1648

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3G Network ConvergenceThe Road to a unified mobile network

Dr. Stanley Chia

Director, Strategic Technologies, Group R&D-US


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Contents

The OHG Harmonisation Effort and the Global 3G System Proposal

MWIF Continued to Drive Network Convergence

The Toronto All-IP Harmonization Meeting

Putting Words into Actions


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Regional

3G Technology

Selection

IMT2000

Submissions /

OHG Formed

Strong Growth inMobile Industry

1997 20021998 20001999 2001


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CDMA-

2000CDMA-

2000

WCDMAWCDMA

WCDMAWCDMAEDGEEDGETD-

SCDMATD-

SCDMA WCDMAWCDMA

CDMA-

2000

CDMA-

2000

WCDMAWCDMA

Ten IMT-2000 Terrestrial 3G System Proposals

EuropeUSA

Japan

Korea

China

DECTDECT

WIMSWIMS


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Fragmented

Standards

Unnecessary costs to

industryUncertainty by

application developers

Complexity to consumers

Two to Three

Major Standards

Same problem as

fragmentationMaximum industry

growth not realised

Continuation of

Standards Wars

Unification of

Standards

Eliminates unnecessary

industry costsStimulates value-added

services

Meets the needs of

customers

Unified standards are good for consumers, operators & manufacturers

Giving Rise to Multiple 3G Scenarios


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A Common Chip Rate

Uniform Pilot Structures

Asynchronous & Synchronous

WCDMACDMA2000

Two Uncompromisable Factions

Synchronous

Common Pilot with

Code Division Multiplexing

Chip Rate: 3.6864 Mcps

Asynchronous

Dedicated Pilot with

Time Division Multiplexing

Chip Rate: 4.096 Mcps

IMT-2000


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FDD

DS

FDD

MCTDD

Evolved

GSM MAP

Evolved

ANSI-41

Network

to NetworkInterface

Radio Access

Family of 3G

CDMA Modes

Core Network

Family of 3G

Systems

Core Network

3G Inter-FamilyRoaming

Unwillingly Agreed to a Global Harmonization Framework

MC = Multicarrier

DS = Direct Spread

NNI = Network Node Interface

F/TDD = Frequency/Time Division Duplex

Flexible connection between Modes andCore Networks based on operator needs


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Which Led to the Historical OHG Agreement

tbdSynchronousas CDMA2000Asynchronous/Synchronous

IMT-2000

TDD

tbd

tbd

3.84 Mcps

FDD

Multi-carrier

CDM

CDM

3.6864 Mcps

FDD

Direct Spread

TDM

CDM

3.84 Mcps

Synchronization

Dedicated Pilot

Common Pilot

Chip Rate

FDD = Frequency Division Duplex

TDD = Time Division Duplex

CDM = Code Division Multiplexing

TDM = Time Division Multiplexing


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Regional

3G Technology

Selection

IMT2000

Submissions /

OHG Formed

OHG

Agreement


1997 20021998 20001999 2001


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ANSI-41

based

Core Network

GSM-MAP

based

Core Network

MC-Mode

Access

Network

MC-Mode

Access

Network

DS-Mode

Access

Network

DS-Mode

Access

Network

To ANSI-41CN viaCDMA2000 stack

To GSM-MAP CNvia WCDMA stack

To ANSI-41 CN

via CDMA2000 L3

& WCDMA stack

To GSM-MAP CN

via WCDMA L3 &

CDMA2000 stack

But The Core Network Remained More Problematic

Network to

Network Interface


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L3(WCDMA)

L3(CDMA2000)

Hooks

Hooks

Hooks

Extension

Extension

Extension

L3(WCDMA)

GSM MAP

L3 RRC (WCDMA)

L2 (WCDMA)

L1 (WCDMA)

ANSI-41

L3(WCDMA)

L3(WCDMA)

Hooks

Hooks

Hooks

Extension

Extension

Extension

L3(CDMA2000)

ANSI-41

L3 RRC (cdma2000)

L2 (cdma2000)

L1 (cdma2000)

GSM MAP

Additional functionalities

which needed to bespecified to meet

requirements when

hooks are in place

Functionalities specified

in the initial release of

the standards for future

extensions without major

protocol change

And the Answer is to Use Hooks and Extensions


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2G to 3G

Interoperation

Direct-Spread

ModeCommon

Pilot

Multi-carrier

Mode

TDD

Mode

Chip rate = 3.84 Mcps

Asynchronous

CDM Common Pilot

TDM Dedicate Pilot

Chip rate = 3.6864 Mcps

Synchronous

CDM Common Pilot

CDM Dedicated Pilot

Chip rate = 3.84 /

1.36 Mcps

Other parameters tbd

Hooks and extension

to be defined to ensure

handoff / roaming

The Global 3G System Ideal Had No Real Industry Interests

WCDMA, EDGE

cdmaOne

cdmaOne

CDMA2000 1X

GSM MAP /

ANSI-41


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Regional

3G Technology

Selection

IMT2000

Submissions /

OHG Formed

MWIF

Formed

OHG

Agreement


Peak of theInternet Boom

1997 20021998 20001999 2001


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MWIF Was Formed in 2002 to Drive the Vision of Convergence

A Mobile Internet Environment With: Interoperability of services and applications with all radio and other media access

technologies

Includes legacy wireless and wire line networks

Common radio access protocol Standard open interfaces among core network components

Plug and play installation and configuration

True customer mobility across all networks

Common service and applications development environment

Single IP based backhaul network Shared equipment between the Internet and Telecommunications communities Seamless integration of mobile telephony and Internet services and content


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Regional

3G Technology

Selection

IMT2000

Submissions /

OHG Formed

MWIF

Formed

OHG

Toronto

Meeting

OHG

Agreement

EconomySlow Down


Peak of theInternet Boom

3G License

Auctions in

Europe

1997 20021998 20001999 2001


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Another Attempt The OHG / MWIF Toronto Meeting

An IP Core Network Harmonization Workshop was held on April 3-4, 2002 inToronto, Canada.

The following conclusions and recommendations were reached:

The harmonization of 3GPP/3GPP2 IP Multimedia Core Networks is a

worthwhile and achievable goal.

This should be pursued urgently by both PP groups.

Focus the harmonization efforts to areas where synergies already exist with

priority given to the harmonization of:

OSA / PARLAY based service APIs.

IP Multimedia Subsystem (IMS).

Adopt a single IMS reference model with consistent terminology.

Ensure interoperability between all IMS mobiles.

Ensure application level intersystem IMS roaming


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And There Is A Glimpse of Hope

The Meeting agreed that 3GPP and 3GPP2 should:

avoid duplication of work

align the IMS and service aspects of their respective Reference Models

collaborate closely on any requirements to be input into IETF related to SIP

extensions and other issues establish formal and informal mechanisms (e.g., joint email exploder) to

promote harmonization activities

consider routes to joint requirements analysis and joint specification

development

work together on a common evolution strategy taking into account the visionwork in other groups including ITU and IP2Ad Hoc

It was also agreed that:

the existing schedules (e.g., 3GPP Release 5) should not be negatively

impacted. common mobility management is an item for future consideration.

3GPP2 should utilize 3GPP Release 5 IMS and Parlay 3.1 as the base for

their on-going development activities.


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To Put Words into Actions

Vodafone Group and Verizon Wireless have jointly issued an invitation to their

strategic suppliers to collaborate on identifying a common core architecture:

- An architecture towards which each company can evolve its core network.

- The target networks is to be based on a common standard.

Such a common core network would support:

- Service transparency.

-Application portability.

- Roaming between Vodafone and Verizon Wireless networks.


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With A Number of Key Objectives

Enable interoperability between CDMA2000 and GSM / WCDMA networks and

other wireless technologies.

Achieve end-user service and quality of service transparency between CDMA2000

and GSM / WCDMA operators.

Share common service applications and service creation capabilities.

Enable the deployment of All-IP-based network for voice, data and multimedia

services.

Adapt a common set of 3GPP / 3GPP2 standards.

Assure a coordinated evolution plan from the existing circuit switched and packet

data networks to All-IP based networks.

Drive standards organization to converge to a single common core network

standard.


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An All-IP Common Core Concept

A common core network is considered essential to ensure service transparency

between CDMA2000 and GSM/WCDMA operators in the long term

Common

core network

CDMA2000

Radio Interface

CDMA2000 Terminal

- or -

Multimode Terminal Interface 1

CDMA2000

RAN

Interface 2

UMTS

RAN

UMTS

Radio Interface

UMTS Terminal

- or -

Multimode Terminal

WLAN

802.11b / a

Radio Interface

WLAN Terminal- or -

Multimode Terminal

Interface 3


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Some Basic Requirements for the Solution

The solution should meet, at least, the following requirements:

- Transparent and seamless support of current and evolving services and

applications when roaming from one market to another

- Seamless support of SIP based call model and service management

- Provision to support legacy infrastructure in the respective networks

- A common service creation platform

- Evolution path to the target IP based architecture

- Compatible with existing and future mobiles as well as wireless LAN based

radio interfaces

- Full quality-of-service support for real-time and non-real-time services

IP


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A Potential Evolution Roadmap

The evolution to a common core network may need to go through two key stages:

- G95 type interoperability and interworking function initially to achieve near

term service transparency.

- Migration to an All-IP platform by the adoption of compatible IP-based core

network with capability of supporting multiple radio interfaces.

Interworkingfunction

IP-based

multimediadomain /

subsystem

Single corewith multiple

radiointerfaces

Gateway A single standard

Multiple coreand multiple

radiointerfaces

Near term Long term


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Key Steps to a Common Core Network

Verizon Wirelessand Vodafone to

agree on commoncore requirements

Submitrequirements to

key infrastructuresuppliers to derive

solutions

Work withsuppliers to comeup with a single

solution

Drive the commoncore solutionthrough the

standards bodies

One core network

Ubiquity

Transparentservices


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Thank You

This time like all times is a good one,if we but know what to do with it.

-Ralph Waldo Emerson

3g network convergence 1648

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