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Next-Generation Mobility

Discover the technical nuances, enhancements, & trials of Mobile IPv6 vs. IPv4, home networking benefits, and 3G integration. Learn about the SmartMobility Trial in Hong Kong & 6WINIT initiative.

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Next-Generation Mobility

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  1. Next-Generation Mobility Technology & Trials Mat Ford matthew.ford@bt.com

  2. Agenda • Why Mobile IP? • Mobile IPv6 technical overview • Mobile IPv6 vs. Mobile IPv4 • Mobile IPv6 - Enhancements • Mobile IPv6 - Status • Home Networking and Mobile IPv6 • 3G and Mobile IPv6 • SmartMobility Trial – Hong Kong • 6WINIT – IPv6 Wireless Internet Initiative • Questions

  3. Why Mobile IP?(1) • Both ends of TCP connection need to keep the same IP address for the duration of the session • This is the Home Address used for end-to-end communication • IP needs to allocate new address when you move point-of-attachment to the network • This is the Care-of Address used for routing • MobileIP turns mobility problem into routing problem by maintaining a dynamic association between HA and COA known as a Binding

  4. Mobile Node TCP connection TCP connection TCP connection Mobile Node Why Mobile IP?(2) Visited Net Visited Net Internet Correspondent Home Net Home Agent Mobile Node

  5. MobileIPv6 Technical Overview(1) • Router advertises routing prefix: • Mobile node auto-configures Care-of Address • Mobile Node sends Binding Updates to Home Agent and Correspondents • Mobile Node is ‘Always-On’ by way of Home Agent 2001:618:6:f1:: 2001:618:6:f1:: + 2d0:b7ff:fe91:5c0c = 2001:618:6:f1:2d0:b7ff:fe91:5c0c

  6. 2001:618:6:f1:: 2d0:b7ff:fe91:5c0c Binding Update TCP connection Binding Update TCP connection Mobile Node Mobile Node MobileIPv6 Technical Overview(2) 2001:618:6:f1:2d0:b7ff:fe91:5c0c Visited Net Internet Correspondent Home Net Home Agent

  7. MobileIPv6 vs. MobileIPv4 • Binding Updates allow mobile node to notify correspondents of current location – no ‘dog-leg’ routes • Home Address Option permits topologically correct source address use – eliminates problems with ingress-filters • Routing Headers remove overheads associated with encapsulation • Enough security is built in (although key distribution problematical)

  8. MobileIPv6 – enhancements(1) • Hierarchical MobileIPv6 • AAA interactions • Fast/Smooth/Seamless Handoffs • Header Compression • Enable MobileIPv6 to act as mobility technology within and between cellular networks – All-IP Cellular Networks

  9. Heirarchical MIP Heirarchical MIP MobileIPv6 – enhancements(2) AAA Context Handover

  10. MobileIPv6 - status • Details of IPsec use in MobileIPv6 have been worked out • Base protocol is at Last Call in the IETF • Various interop tests have been successfully completed • Several publicly available implementations

  11. Home networking with IPv6 • Autoconfiguration • Always On • Incoming comms for remote home automation • Security • P2P is growing fast • Large numbers of devices

  12. Home networking & Mobile IPv6(1) User A User B • 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 ISP A

  13. Home networking & Mobile IPv6(2) • MobileIPv6 provides optimal traffic path • Only initial traffic is routed through other ISPs point of attachment • Subsequent traffic routed directly to COA • Improves scalability User A User B ISP B ISP A

  14. IPv6 in 3G networks • IM domain is specified IPv6 only in Release 4/5 • Are terminals dual-stack or IPv6-only? • Is backbone network dual-stack or IPv6-only? • In time all network elements will migrate to an IPv6-only solution • Inter-working uses DSTM? NAT-PT?

  15. v6 v6 v6 v4 v4 v4 IPv6 in 3G networks SIP PSTN Call State Control (CSCF) Media Gateway (MGW) 3G IM Domain IPv6 Network Media Gateway Control Function SIP IPv4 Internet & Intranets E-GGSN IPv4 or IPv6 Internet / intranet E-SGSN IPv6 Backbone for Tunnelling Layer

  16. 3G and MobileIPv6 • MobileIPv6 enables seamless roaming between 3G/cellular environment and fixed home/corporate networks • MobileIPv6 not currently specified in 3GPP

  17. Smart v6 Trial • Collaboration between BT, SmarTone and Ericsson • Intended to demonstrate IPv6 applications, IPv6/IPv4 interworking, IPv6 over GPRS, and MobileIPv6 including intelligent content delivery • Support SmarTone in their bid for a 3G license • 2 day event in Hong Kong October 24th/25th

  18. 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

  19. Hub 3 IPv4 GPRSContainer Hub 2 HA Hub 1 PROXY 202.140.100.19 To UK Smart v6 Trial Ethernet 6in4 tunnel 202.140.100.21 Router 1 PC HK Live IPv4 Ultima 202.140.100.18 202.140.100.22-30 PC 6in4 tunnel Private IPv4 addresses MAP 202.140.100.20 MIPv6 Scenario 4: Fixed/Mobile roaming Serial R520 Router 2 Ethernet Local Native IPv6 Network MIPv6 WLAN BS2 CN APPS (WWW, MP3, Quake, DNS) 202.140.100.17 VOD RNC Scenario 3: Broadband MobileIPv6 Scenario 1: Fixed broadband IPv6 WLAN BS1 Scenario 2: Wireless broadband IPv6

  20. HK IPv6 Network Applications Server DNS Server WLAN IPv6 Local Internet IPv6 MP3 Audio IPv6 VoD Quake Scenario 1: Broadband IPv6

  21. UK IPv6 Network IPv6 MP3 Audio IPv6 Internet IPv4 Internet Scenario 2: IPv6 meets IPv4 HK IPv6 Network IPv4 Internet DNS Server

  22. Office Domain Scenario 3: MobileIPv6 IPv4 Internet HK IPv6 Network Database Server Portal Server WLAN WLAN Home Agent Home Domain MIPv6 Local News & Weather Business News, Shares & Reminders

  23. IPv4 Internet HK IPv6 Network Database Server Portal Server GPRS WLAN Home Agent Business News, Shares & Reminders Scenario 4: Inter-technology handover GPRS Office Domain Mobile Domain High Bandwidth Low Bandwidth MIPv6 Business News, Shares & Reminders Business News, Shares & Reminders Reformatted

  24. Smart v6 Trial

  25. Smart v6 Trial • Compaq iPAQ 32MB • OS on Flash ROM • Runs LINUX • Support for WLAN, USB • Developing IPv6 support • Need applications…

  26. WINIT 6WINIT – IPv6 Wireless Internet Initiative • EU Fifth Framework project • 18 project participants including US, Korea and Canada • Aims to build international wireless IPv6 infrastructure and application testbed • Applications: generic and clinical • 2 year project 01/01/01 – 31/12/02 • BT will provide network infrastructure and interworking expertise

  27. Questions? • Thanks for your attention • Any questions?

  28. www.bt.com/ipv6 matthew.ford@bt.com

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