Mobile IP and 3G M T L Hills Director of Technology Ericsson UK

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Mobile IP and 3GM T L HillsDirector of
TechnologyEricsson UK
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Agenda

• Vision
• Architecture
• Challenge of Real Time IP over the air
• Regulatory Issues
• Conclusions

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Subscribers
1,000
Wireline
800
Minutemigration
600
(millions)
Wireless
400
Internet
200
0
1996
1998
2000
2002
2004
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Seamless service coverage availability with
high quality capacity at low cost
Personal Communication Vision
User-friendly low-cost mass-markets service
Personal services and numbers
Business services at the office and on the move

• Personal communicators pocket sized

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What does it mean for the end-user?

• Mobile Internet
• Always Connected -Always On-line
• Enhanced Communication
• Voice, Text, Image,Audio, Video
• Converged Services
• Fixed and Mobile
• Communications / Computing
• Seamless Roaming

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The Multi-Access Multi-Service IP
Architecture Key Challenges

• Mobility
• (personal, terminal and session)
• Conversational applications
• Spectrum efficiency
• Large amount of terminals (addresses)

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Evolution into a packet network
P H A S E 1
P H A S E 2
Data IP (Best-effort)
Real-time IP (QoS)

• Started already
• Internet
• Intranet

NOW Carrier-class/ Multi-services(ATM,MPLS) VoIP
Wireline
NOW HSCSD GPRS 3G Mobile (Phase 1)R99
2002 3G Mobile (Phase 2)R00 VoIPoW MoIPoW
Mobile
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From vertical networks to horizontal layers
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Layered Network Architecture
Applications

• IP applications
• Virtual Home Env
• Open Service Arch

Control layer

• Network specific
• Call control
• Session management
• Mobility management

UMTS
Connectivity Layer

• Transport
• Switching
• Routing
• User payload

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MultiService Switching Forum Model Separation of
Call and Connection
AAA

• Authentication
• Authorization
• Accounting

VAS
IN
signalling User Data
Call ControllerMSC server
Call ControllerLE server
Call
BSS
UTRAN
Media GateWay
Media GateWay
Connection
ATM or IP

• Media Transcoding
• Media Mapping
• DTMF, Voice Reqogn, ...

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Standards in Layered Architecture

• IETF - MEGACO
• Interface between Media Gateway Controller and
  Media Gateway

• ETSI - Tiphon
• Relation between Telecom networks and IP Networks

• MSF
• Separation between call and bearer - different
  trp technologies
• ATM shared by Telephony, IP/MPLS, FR, VCs,

• ITU - H.323 and H.324
• Multimedia standards
• GateKeeper/Gateway H.248

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Wireless Systems, Mobility vs Bandwidth
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VoIPoW Challenge
Network centric principle - standardised service
control intelligence above the bit-pipe Terminal
centric principle - terminal APIs to
control bearer service set up and optimised
header compression
Speech quality
3G cct
Example Mobile ICQ over 3G ph 1 - best effort
QoS and standard IP (80-90 overhead)
3G ph 2
Min. level
Spectrum efficiency
Standard IP
IP service flexibility
lt10 loss
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VoIPoW Ericsson Proposal

• ROCCO, RObust Checksum COmpressed header, solves
  IP Overhead/Robustness problem
• IP-header cost is only 10
• Link Layer protocol must be aware of stream type
• Standardized Speech Coder needed.
• AMR (Adaptive MultiRate) proposed -
• really would like this to be a world
  standard
• Published as RFC

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Addressing

• IPv4 Address space
• Constrained and highly asymmetric public
  address allocation
• Address translation mechanisms
• non-transparent (security etc)
• generate delays
• Largest address block approx 16M addresses
• too small for large IP-based public telecom
  operators network

IPv6 Very large public address space
Sufficient addresses for all
Public number will probably be Network Address
Identifier (NAI) but equipment number will be
IPv6 format
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Mobile IP

• IETF proposal to support roaming and session
  handover in fixed and mobile environment
• Designed to support high bandwidth best-effort
  service
• Enhancements being proposed to resolve issues in
  addressing authentication and handover
  performance
• Mobile IP will be key for roaming in high
  bandwidth environment - WLAN
• Unlikely to support handover performance needed
  in Cellular environment
• Overall universal mobility in IP environment will
  require inter-operation between Mobile IP and
  cellular system

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Regulatory Issues

• Will IP-based services be treated as telephony
  services?
• Separation of service regulation from access
  regulation.
• Spectrum
• Traditional access network
• Wide area cellular
• Short range wireless

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Conclusions

• The combination of Mobility and IP will provide a
  rich environment for many applications and
  services. The portable electronic communicators
  device will give the opportunity to integrate a
  wide range of current needs.
• Best effort Cellular IP services are here now and
  will be ubiquitous in two years time.
• The evolution of cellular systems to support full
  QoS IP still has some challenges to overcome but
  technical solutions are emerging.
• Regulations major changes in service and
  infrastructure will lead to new regulation
  environment.