1. Cellular Internet Connections Bo Kvarnström Center for Radio Network Control, Linköping Ericsson Radio Systems AB Bo.Kvarnstrom@era.ericsson.se

3. Cellular Telephony emulates the services provided by fixed Telephony

4. Cellular Network Service Access Point

5. 1995 1996 1997 1998 1999 2000 2001 2002 2003 100 200 300 500 400 GSM 900 GSM 1800 GSM 1900 GSM Market Growth

6. Cellular Networks emulates the services provided by fixed Networks

7. Cellular Network Service Network Access Network

8. Cellular Service Network Subscriber Management –Customer Care –Billing Interface Mediation Mobility Management –Roaming

9. Access Network Circuit Switched Services PSTN/ISDN Internet Circuit Switched Services Packet Switched Services PSTN/ISDN Internet Today Tomorrow

10. Cellular Access Network Service Network Access Point

11. Radio Blocks Service Network Access Point

12. IP packets. MAC/RLC Radio Blocks ACK/NACK (MAC/RLC) MS LLC LLC PDU ACK/NACK IP packets

13. fufu fdfd One duplex user channel up to 14.4 kbit/s user data

14. 14.4 kbps N x 14.4 kbps Allocate more slots per user New modulation schemes 14.4 - 48.8 kbps per slot

15. IndoorLocal Wide area W-LAN DECT Cellular evolution Cellular bits/s 10 K 64 K 384 K 2 M

16. Original GSM (8 x) 9,6 kbps 77 GSM Today (8 x) 14,4 kbps 115 Future GSM (8 x) 48,8 kbps 384

17. GSM Summary Transition from Circuit towards Packet ongoing Step by step introduction of higher bit rates

18. WCDMA Wideband Code Division Multiple Access Optimized for variable and high speed data rates Higher capacity and coverage Designed for both packet and circuit switched services Supports multiple simultaneous services

19. Circuit Switched Services Packet Switched Services PSTN/ISDN Internet GSM Access Network WCDMA Access Network

20. High data rates in 5 MHz –384 kbps with wide-area coverage –2 Mbps with local coverage High service flexibility –support for services with variable rate –support for simultaneous services –support of multiple parallel variable-rate services on one connection –packet and circuit switched services Fast and efficient packet access Higher capacity

21. IndoorLocal Wide area W-LAN DECT UMTS Cellular evolution Cellular bits/s 10 K 64 K 384 K 2 M Coverage vs Bandwidth