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Interworking IPv6 in Mobile Networks

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  • 1. Interworking IPv6 in Mobile Networks Mat Ford [email_address]
  • 2. Agenda
    • Broadband IP network evolution
    • Broadband/3G integration
    • Benefits of MobileIPv6
    • Interworking options
      • NAT-PT
      • DSTM
    • Smartv6 Demonstration
    • Conclusions
  • 3. Typical Broadband IP Model L2TP Tunnel Access PoP ISP ISP INTERNET Carrier IP core Access PoP
  • 4. Broadband ‘Direct’ BAS Access PoP ASP ASP INTERNET Access PoP Carrier IP core
  • 5. IP Mobility
    • No true IP mobility is available
    • L2TP provides limited IP mobility within the boundaries of the specific access network
    • Only MobileIP technology can provide true IP mobility to end users
  • 6. Agenda
    • Broadband IP network evolution
    • Broadband/3G integration
    • Benefits of MobileIPv6
    • Interworking options
      • NAT-PT
      • DSTM
    • Smartv6 Demonstration
    • Conclusions
  • 7. IPv6 in 3G Networks IM Domain IPv6 PS Domain IPv4 or IPv6 Existing IPv4 Internet SGSN GGSN Mobile Terminal SIP Proxy Server Media/ Signalling Gateway PSTN SIP Client SIP Proxy Server GTP Operators ISP WWW Server
  • 8. IPv6 in Broadband Networks DSLAM ATM IP Core Internet BAS Internet VC – Variable Bit Rate SIP VC – Constant Bit Rate IPv6 Multimedia Domain SIP Server Other Operator’s Multimedia Domain Globally routable IPv6 address(es) IPv4 or IPv6 address
  • 9. Broadband/3G Integration
    • Unified infrastructure
      • No interworking or gateways
    • No addressing problems
      • Forecasted volumes easy to cater for
    • Leverage application development for maximum returns
  • 10. Agenda
    • Broadband IP network evolution
    • Broadband/3G integration
    • Benefits of MobileIPv6
    • Interworking options
      • NAT-PT
      • DSTM
    • Smartv6 Demonstration
    • Conclusions
  • 11. MobileIPv6 Benefits
    • MobileIPv6 + Broadband ‘Direct’ model is a powerful enabler of IP mobility
    • End-users running services are continuously on-line and contactable while roaming between broadband network access segments
  • 12. MobileIPv6 and Broadband
    • Without MobileIP, connections from UserA to UserB have to go via ISP A and ISP B
    • Inefficient routing
    • Poor scalability
    • Multiple single-points-of-failure
    ISP B User A User B ISP A
  • 13. MobileIPv6 and Broadband ISP B User A User B ISP A Initial traffic only passes through ISPs Subsequent traffic direct to Care-of-address Home Agent Home Agent Holds care-of-address of user B Holds care-of-address of user A
  • 14. Agenda
    • Broadband IP network evolution
    • Broadband/3G integration
    • Benefits of MobileIPv6
    • Interworking options
      • NAT-PT
      • DSTM
    • Smartv6 Demonstration
    • Conclusions
  • 15. IPv6 Transition & Interworking
    • Transition
      • how we migrate to IPv6
    • Interworking
      • how we continue to operate with IPv4
    • New networks have no transition requirements
    • Transition requirements for core networks met through routine upgrades
  • 16. IPv6 Interworking
    • Interworking multimedia domains
      • Enabling SIP application interworking
      • Deploy proxies at the network boundary
    • Interworking network core
      • Dependent on type of address allocation to end-user
      • Translation is required where user has no IPv4 address
  • 17. Interworking Options IM Domain IPv6 PS Domain IPv4 or IPv6 Existing IPv4 Internet SGSN GGSN Mobile Terminal SIP Proxy Server Media/ Signalling Gateway PSTN SIP Client SIP Proxy Server GTP Operators ISP WWW Server Potential points of IPv4/IPv6 interworking support
  • 18. NAT-PT Translation DSL Access Network IP Network (IPv4) Access Router (IPv6) End User Equipment (IPv6 only) NAT-PT IPv6 DNS IPv4 DNS DNS exchange initiates communication via translator Communication with IPv4 via translator
  • 19. DSTM Support for native IPv4 DSL Access Network IP Network (IPv4) Access Router (IPv6) End User Equipment (Initially IPv6 only) DHCPv6 End user discovers communication to IPv4 – requests temporary IPv4 address Native communication with IPv4 IPv4 over IPv6 tunnel
  • 20. Agenda
    • Broadband IP network evolution
    • Broadband/3G integration
    • Benefits of MobileIPv6
    • Interworking options
      • NAT-PT
      • DSTM
    • Smartv6 Demonstration
    • Conclusions
  • 21. Smart v6 Trial
    • Collaboration between BT, SmarTone and Ericsson
    • Demonstrating:
      • IPv6 applications
      • IPv6/IPv4 interworking
      • IPv6 over GPRS
      • MobileIPv6
      • Intelligent content delivery
  • 22. Smart v6 Trial
    • Scenario 1: IPv6-only clients, IPv6-only network running Quake, mp3, Video, WWW
    • Scenario 2: Interworking IPv4 and IPv6
    • Scenario 3: MobileIPv6 and content customisation
    • Scenario 4: Inter-technology handover
  • 23. RNC WLAN BS2 Serial Router 2 Ultima 202.140.100.18 202.140.100.22-30 HK Live IPv4 MAP 202.140.100.20 Scenario 4: Fixed/Mobile roaming R520 Ethernet Scenario 3: Broadband MobileIPv6 Scenario 2: Wireless broadband IPv6 WLAN BS1 Scenario 1: Fixed broadband IPv6 VOD Local Native IPv6 Network APPS (WWW, MP3, Quake, DNS) 202.140.100.17 PROXY 202.140.100.19 CN Router 1 Ethernet 6in4 tunnel 202.140.100.21 PC 6in4 tunnel Private IPv4 addresses To UK PC MIPv6 MIPv6 IPv4 GPRS Container HA Hub 3 Hub 2 Hub 1
  • 24. Scenario 1: Broadband IPv6 Applications Server DNS Server HK IPv6 Network WLAN Quake IPv6 Local Internet IPv6 MP3 Audio IPv6 VoD
  • 25. Scenario 2: IPv6 meets IPv4 DNS Server HK IPv6 Network IPv4 Internet UK IPv6 Network IPv6 Internet IPv4 Internet IPv6 MP3 Audio
  • 26. Scenario 3: MobileIPv6 Portal Server Database Server Home Agent IPv4 Internet HK IPv6 Network Local News & Weather Home Domain WLAN Business News, Shares & Reminders WLAN MIPv6 Office Domain
  • 27. Scenario 4: Inter-technology handover Portal Server Database Server Home Agent IPv4 Internet WLAN HK IPv6 Network GPRS Business News, Shares & Reminders Mobile Domain Low Bandwidth GPRS Office Domain High Bandwidth Business News, Shares & Reminders Reformatted MIPv6 Business News, Shares & Reminders
  • 28. Smart v6 Trial
  • 29. Agenda
    • Broadband IP network evolution
    • Broadband/3G integration
    • Benefits of MobileIPv6
    • Interworking options
      • NAT-PT
      • DSTM
    • Smartv6 Demonstration
    • Conclusions
  • 30. Conclusions
    • Provide a Broadband ‘Direct’ architecture
      • No ISP lock-in
      • Optimises bandwidth consumption
      • Greater flexibility for end-users
    • Build a network that will scale
      • Use IPv6
    • Allow for ‘always-on’ P2P applications
      • Requires globally routable addressing
      • Requires IPv6
  • 31. Conclusions
    • Prepare for 3G multimedia convergence
      • 3G IP multimedia *will* run IPv6 only
    • IPv6 provides many advantages for broadband
      • Autoconfiguration, mobility, security…
    • Transition and migration issues must be overcome
  • 32. Useful Links
    • www.ist-ipv6.org
    • www.bt.com/ipv6
    • www.6winit.org
    WINIT
  • 33. www.bt.com/ipv6 [email_address]

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