Interworking IPv 6 in Mobile Networks Mat Ford

Interworking IPv 6 in Mobile Networks Mat Ford matthew. ford@bt. com

Agenda Broadband IP network evolution § Broadband/3 G integration § Benefits of Mobile. IPv 6 § Interworking options § NAT-PT - DSTM - Smartv 6 Demonstration § Conclusions § © British Telecommunications plc, 2002 2

Typical Broadband IP Model Access Po. P ISP L 2 TP Tunnel Carrier IP core ISP Access Po. P INTERNET © British Telecommunications plc, 2002 3

Broadband ‘Direct’ Access Po. P ASP BAS Carrier IP core ASP Access Po. P INTERNET © British Telecommunications plc, 2002 4

IP Mobility No true IP mobility is available § L 2 TP provides limited IP mobility within the boundaries of the specific access network § Only Mobile. IP technology can provide true IP mobility to end users § © British Telecommunications plc, 2002 5

Agenda Broadband IP network evolution § Broadband/3 G integration § Benefits of Mobile. IPv 6 § Interworking options § NAT-PT - DSTM - Smartv 6 Demonstration § Conclusions § © British Telecommunications plc, 2002 6

IPv 6 in 3 G Networks IM Domain IPv 6 SIP Proxy Server PSTN Media/ Signalling Gateway PS Domain IPv 4 or IPv 6 Mobile Terminal GTP SGSN GGSN Operators ISP Existing IPv 4 Internet WWW Server SIP Proxy Server SIP Client © British Telecommunications plc, 2002 7

IPv 6 in Broadband Networks Internet IPv 4 or IPv 6 address DSLAM Internet VC – Variable Bit Rate ATM BAS IP Core SIP VC – Constant Bit Rate Globally routable IPv 6 address(es) © British Telecommunications plc, 2002 IPv 6 Multimedia Domain SIP Serve r Other Operator’s Multimedia Domain 8

Broadband/3 G Integration § Unified infrastructure - § No addressing problems - § No interworking or gateways Forecasted volumes easy to cater for Leverage application development for maximum returns © British Telecommunications plc, 2002 9

Agenda Broadband IP network evolution § Broadband/3 G integration § Benefits of Mobile. IPv 6 § Interworking options § NAT-PT - DSTM - Smartv 6 Demonstration § Conclusions § © British Telecommunications plc, 2002 10

Mobile. IPv 6 Benefits Mobile. IPv 6 + 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, 2002 11

Mobile. IPv 6 and Broadband User Without Mobile. IP, A connections from User. A to User. B have to go via ISP A and ISP B § Inefficient routing § Poor scalability § Multiple single-points-of -failure § © British Telecommunications plc, 2002 User B ISP A 12

Mobile. IPv 6 and Broadband User A User B Subsequent traffic direct to Care-of-address ISP B Home Agent Holds care-ofaddress of user B Initial traffic only passes through ISPs ISP A Home Agent © British Telecommunications plc, 2002 Holds care-ofaddress of user A 13

Agenda Broadband IP network evolution § Broadband/3 G integration § Benefits of Mobile. IPv 6 § Interworking options § NAT-PT - DSTM - Smartv 6 Demonstration § Conclusions § © British Telecommunications plc, 2002 14

IPv 6 Transition & Interworking § Transition - § how we migrate to IPv 6 Interworking - how we continue to operate with IPv 4 New networks have no transition requirements § Transition requirements for core networks met through routine upgrades § © British Telecommunications plc, 2002 15

IPv 6 Interworking § Interworking multimedia domains Enabling SIP application interworking - Deploy proxies at the network boundary - § Interworking network core Dependent on type of address allocation to enduser - Translation is required where user has no IPv 4 address - © British Telecommunications plc, 2002 16

Interworking Options IM Domain IPv 6 SIP Proxy Server PSTN Media/ Signalling Gateway PS Domain IPv 4 or IPv 6 Mobile Terminal GTP SGSN GGSN Operators ISP Existing IPv 4 Internet WWW Server SIP Proxy Server SIP Client Potential points of IPv 4/IPv 6 interworking support © British Telecommunications plc, 2002 17

NAT-PT Translation End User Equipment (IPv 6 only) DSL Access Network Access Router (IPv 6) IP Network (IPv 4) NAT-PT Communication with IPv 4 via translator IPv 4 DNS exchange initiates communication via translator © British Telecommunications plc, 2002 IPv 6 DNS 18

DSTM Support for native IPv 4 End User Equipment (Initially IPv 6 only) DSL Access Network Access Router (IPv 6) Native communication with IPv 4 over IPv 6 tunnel End user discovers communication to IPv 4 – requests temporary IPv 4 address © British Telecommunications plc, 2002 IP Network (IPv 4) DHCPv 6 19

Agenda Broadband IP network evolution § Broadband/3 G integration § Benefits of Mobile. IPv 6 § Interworking options § NAT-PT - DSTM - Smartv 6 Demonstration § Conclusions § © British Telecommunications plc, 2002 20

Smart v 6 Trial Collaboration between BT, Smar. Tone and Ericsson § Demonstrating: § - IPv 6 applications IPv 6/IPv 4 interworking IPv 6 over GPRS Mobile. IPv 6 Intelligent content delivery © British Telecommunications plc, 2002 21

Smart v 6 Trial Scenario 1: IPv 6 -only clients, IPv 6 -only network running Quake, mp 3, Video, WWW § Scenario 2: Interworking IPv 4 and IPv 6 § Scenario 3: Mobile. IPv 6 and content customisation § Scenario 4: Inter-technology handover § © British Telecommunications plc, 2002 22

Ethernet 6 in 4 tunnel 202. 140. 100. 21 IPv 4 GPRS Container PC 6 in 4 tunnel Private IPv 4 addresses PC PROXY 202. 140. 100. 19 Router 1 Hub 3 To UK HK Live IPv 4 Ultima 202. 140. 100. 18 202. 140. 100. 22 -30 MAP 202. 140. 100. 20 Hub 2 MIPv 6 Scenario 4: Fixed/Mobile roaming Serial R 520 Ethernet Router 2 Local Native IPv 6 Network WLAN BS 2 MIPv 6 CN RNC Scenario 3: Broadband Mobile. IPv 6 Hub 1 WLAN BS 1 HA APPS (WWW, MP 3, Quake, DNS) 202. 140. 100. 17 VOD Scenario 1: Fixed broadband IPv 6 Scenario 2: Wireless broadband IPv 6 © British Telecommunications plc, 2002 23

Scenario 1: Broadband IPv 6 HK IPv 6 Network Applications Server DNS Server WLAN Quake IPv 6 Local Internet IPv 6 Vo. D IPv 6 MP 3 Audio © British Telecommunications plc, 2002 24

Scenario 2: IPv 6 meets IPv 4 HK IPv 6 Network IPv 4 Internet DNS Server UK IPv 6 Network IPv 6 Internet IPv 6 MP 3 Audio IPv 4 Internet © British Telecommunications plc, 2002 25

Scenario 3: Mobile. IPv 6 IPv 4 Internet HK IPv 6 Network Database Server Portal Server WLAN Home Agent Home Domain Office Domain MIPv 6 Local News & Weather © British Telecommunications plc, 2002 Business News, Shares & Reminders 26

Scenario 4: Inter-technology handover HK IPv 6 Network Database Server IPv 4 Internet Portal Server GPRS Home Agent Office Domain High Bandwidth WLAN Mobile Domain Low Bandwidth MIPv 6 Business News, Shares & Reminders © British Telecommunications plc, 2002 d tte a m r Refo Business News, Shares & Reminders 27

Smart v 6 Trial © British Telecommunications plc, 2002 28

Agenda Broadband IP network evolution § Broadband/3 G integration § Benefits of Mobile. IPv 6 § Interworking options § NAT-PT - DSTM - Smartv 6 Demonstration § Conclusions § © British Telecommunications plc, 2002 29

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 IPv 6 Allow for ‘always-on’ P 2 P applications Requires globally routable addressing - Requires IPv 6 - © British Telecommunications plc, 2002 30

Conclusions § Prepare for 3 G multimedia convergence - § IPv 6 provides many advantages for broadband - § 3 G IP multimedia *will* run IPv 6 only Autoconfiguration, mobility, security… Transition and migration issues must be overcome © British Telecommunications plc, 2002 31