1. 1Presentation_ID Spring VON 2001 Session 32 - 4G Wireless: Future of VoIP 4G: The End of the Intelligent Network Dana blair (dblair@cisco.Com) 678-352-2789

2. Spring VON 2001 Session 32 - 4G Wireless: Future of VoIP © 2000, Cisco Systems, Inc. Current mobile wireless infrastructure is the last outpost of the Intelligent Network Service delivery centered around SS7/IS-41/GSM MAP intelligent nodes within the network 1G is POTS over the air 2G/2.5G/3G is ISDN over the air Pre-4G Intelligent Network

3. Spring VON 2001 Session 32 - 4G Wireless: Future of VoIP © 2000, Cisco Systems, Inc. Every digital wireless phone is an ISDN phone with handoff and paging Voice service deployment with 3G is equivalent to service deployment with ISDN ISDN was unsuccessful in deployment of new voice services and integrated voice/data. However, 3G has cracked open the door with SIP and IPv6 endorsement Pre-4G Intelligent Network

4. Spring VON 2001 Session 32 - 4G Wireless: Future of VoIP © 2000, Cisco Systems, Inc. 2G to 4G Voice Delivery BTS Mobile Switching Center (MSC A ) Base Station Controller 2G Circuit Node B MSC Server RNC 3G R’99 ATM ISDN w/ handoff 3G R’00 VoIP Node B Call State Control Function SIP Call stateful Proxy SGSN RNC ATM IP Tunnel GGSN Internet Node B 4G VoIP IP SIP Media Gateway PSTN

5. Spring VON 2001 Session 32 - 4G Wireless: Future of VoIP © 2000, Cisco Systems, Inc. ISDN call model with SIP protocol instead of Q.931 Replace SS7/IS-41/GSM MAP application development with SIP Voice call control performed by Intelligent Network nodes (CSCF, …) Similar to ISDN voice and integrated voice/data service deployment model 3G View of SIP

6. Spring VON 2001 Session 32 - 4G Wireless: Future of VoIP © 2000, Cisco Systems, Inc. Need larger address space for billions of mobile devices Permanently assign an IPv6 address to every mobile device Global tromboning through Intelligent Network nodes Mobility managed through IP tunneling 3G View of IPv6

7. Spring VON 2001 Session 32 - 4G Wireless: Future of VoIP © 2000, Cisco Systems, Inc. 2G to 4G Data BTS PSTN Mobile Switching Center (MSC A ) Base Station Controller 2G Circuit ISDN w/ handoff Node B 4G IP Node B SGSN 2.5G GPRS RNC ATM IP Tunnel GGSN V.110 NAS Node B SGSN RNC ATM IP Tunnel GGSN 3G UMTS Internet 3G data delivery is the same as 2.5G

8. Spring VON 2001 Session 32 - 4G Wireless: Future of VoIP © 2000, Cisco Systems, Inc. Multimode radio still needed Similar throughput, delay, reliability, QoS advantage Same ISDN call model Voice and Data continue to use seperately signalled channels Very similar service delivery model. 3G compared 2G/2.5G

9. Spring VON 2001 Session 32 - 4G Wireless: Future of VoIP © 2000, Cisco Systems, Inc. How much energy can be squeezed into a cubic meter of air without damaging plants and animals ? Transmission rates are limited by the output power of the mobile device and human factors 4G: What About Bandwidth ?

10. Spring VON 2001 Session 32 - 4G Wireless: Future of VoIP © 2000, Cisco Systems, Inc. Battery technology improves Human factors do not change. Why does a microwave oven shut off immediately when the door is open ? Solution - decrease the distance from handset to receiver with greater base station density 4G: What About Bandwidth ?

11. Spring VON 2001 Session 32 - 4G Wireless: Future of VoIP © 2000, Cisco Systems, Inc. GSM/TDMA/EDGE/CDMA 2G/2.5G radios IP over 3G R’99 ATM infrastructure SIP and IPv6 in the handset Optimal internet routing and handoff protocols Greater base station density improves bandwidth A View of 4G

12. Spring VON 2001 Session 32 - 4G Wireless: Future of VoIP © 2000, Cisco Systems, Inc. Seamless use of many radio protocols both licensed and unlicensed spectrum (802.11, bluetooth, cellular, …) Integration of voice and data over the same transmission channel Integrated voice and data SIP- enabled applications A View of 4G