Interworking IPv6 in Mobile Networks Mat

© British Telecommunications plc, Agenda  Broadband IP network evolution  Broadband/3G integration  Benefits of MobileIPv6  Interworking options - NAT-PT - DSTM  Smartv6 Demonstration  Conclusions

© British Telecommunications plc, Typical Broadband IP Model L2TP Tunnel Access PoP ISP INTERNET Carrier IP core Access PoP

© British Telecommunications plc, BAS Broadband ‘Direct’ Access PoP ASP INTERNET Access PoP Carrier IP core

© British Telecommunications plc, 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

© British Telecommunications plc, Agenda  Broadband IP network evolution  Broadband/3G integration  Benefits of MobileIPv6  Interworking options - NAT-PT - DSTM  Smartv6 Demonstration  Conclusions

© British Telecommunications plc, 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

© British Telecommunications plc, IPv6 in Broadband Networks DSLAM ATM IP Core Internet BAS Internet VC – Variable Bit Rate SIP VC – Constant Bit Rate IPv6 Multimedia Domain SIP Serve r Other Operator’s Multimedia Domain Globally routable IPv6 address(es) IPv4 or IPv6 address

© British Telecommunications plc, Broadband/3G Integration  Unified infrastructure - No interworking or gateways  No addressing problems - Forecasted volumes easy to cater for  Leverage application development for maximum returns

© British Telecommunications plc, Agenda  Broadband IP network evolution  Broadband/3G integration  Benefits of MobileIPv6  Interworking options - NAT-PT - DSTM  Smartv6 Demonstration  Conclusions

© British Telecommunications plc, 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

© British Telecommunications plc, 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

© British Telecommunications plc, 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 Holds care-of- address of user B Holds care-of- address of user A

© British Telecommunications plc, Agenda  Broadband IP network evolution  Broadband/3G integration  Benefits of MobileIPv6  Interworking options - NAT-PT - DSTM  Smartv6 Demonstration  Conclusions

© British Telecommunications plc, 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

© British Telecommunications plc, 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

© British Telecommunications plc, 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 Interworking Options Potential points of IPv4/IPv6 interworking support

© British Telecommunications plc, 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

© British Telecommunications plc, 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

© British Telecommunications plc, Agenda  Broadband IP network evolution  Broadband/3G integration  Benefits of MobileIPv6  Interworking options - NAT-PT - DSTM  Smartv6 Demonstration  Conclusions

© British Telecommunications plc, Smart v6 Trial  Collaboration between BT, SmarTone and Ericsson  Demonstrating: - IPv6 applications - IPv6/IPv4 interworking - IPv6 over GPRS - MobileIPv6 - Intelligent content delivery

© British Telecommunications plc, 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

© British Telecommunications plc, IPv4 GPRS Container RNC WLAN BS2 Serial Router 2 Ultima HK Live IPv4 MAP 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 HA Hub 3Hub 2 APPS (WWW, MP3, Quake, DNS) PROXY CN Hub 1 Router 1 Ethernet 6in4 tunnel PC 6in4 tunnel Private IPv4 addresses To UK PC MIPv6

© British Telecommunications plc, Scenario 1: Broadband IPv6 Applications Server DNS Server HK IPv6 Network WLAN Quake IPv6 Local Internet IPv6 MP3 Audio IPv6 VoD

© British Telecommunications plc, Scenario 2: IPv6 meets IPv4 DNS Server HK IPv6 Network IPv4 Internet UK IPv6 Network IPv6 Internet IPv4 Internet IPv6 MP3 Audio

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

© British Telecommunications plc, 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 Business News, Shares & Reminders GPRS Office Domain High Bandwidth Business News, Shares & Reminders Reformatted MIPv6

© British Telecommunications plc, Smart v6 Trial

© British Telecommunications plc, Agenda  Broadband IP network evolution  Broadband/3G integration  Benefits of MobileIPv6  Interworking options - NAT-PT - DSTM  Smartv6 Demonstration  Conclusions

© British Telecommunications plc, 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

© British Telecommunications plc, 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

© British Telecommunications plc, Useful Links   

© British Telecommunications plc,