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Cellular Internet Connections

Cellular Internet Connections. Bo Kvarnström Center for Radio Network Control, Linköping Ericsson Radio Systems AB Bo.Kvarnstrom@era.ericsson.se. 9.600 bits/s. Cellular Telephony emulates the services provided by fixed Telephony. Service Access Point. Cellular Network. 500. 400. 300.

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Cellular Internet Connections

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

  2. 9.600 bits/s

  3. Cellular Telephony emulates the services provided by fixed Telephony

  4. Service Access Point Cellular Network

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

  6. Cellular Networksemulates the services provided by fixed Networks

  7. Access Network Cellular Network Service Network

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

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

  10. Service NetworkAccess Point Cellular Access Network

  11. Service NetworkAccess Point Radio Blocks

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

  13. fu fd One duplex user channel up to 14.4 kbit/s user data

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

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

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

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

  18. WCDMAWideband 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. PSTN/ISDN Internet Circuit SwitchedServices Packet SwitchedServices 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. bits/s 2 M 384 K 64 K 10 K Coverage vs Bandwidth W-LAN DECT UMTS Cellular evolution Cellular Indoor Local Wide area

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