3g Network Convergence 1648
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Transcript of 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
Strong Growth inMobile Industry
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
Strong Growth inMobile Industry
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
Strong Growth inMobile Industry
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