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Teleservices

Services. ISDN-oriented Mobile specific services & modifications. Supplementary Services. Teleservices. Bearer Services. GSM Phase 1/2 Services. Fig. 1 (TM2100EU03TM_0001 GSM Services, 3). Tele Services TS: defines services "end-to-end" incl. application. Bearer Services BS:

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Teleservices

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  1. Services • ISDN-oriented • Mobile specific services • & modifications SupplementaryServices Teleservices Bearer Services GSM Phase 1/2 Services Fig. 1 (TM2100EU03TM_0001 GSM Services, 3)

  2. Tele Services TS: defines services "end-to-end" incl. application Bearer Services BS: defines data transmission Teleservices Bearer Services PLMN section section outside PLMN Interworking Function IWF Terminating network TE (MS) TE (MS) Transit network GSM network Supplementary Services SS: enhance/modify TS / BS Fig. 2 (TM2100EU03TM_0001 GSM Services, 5)

  3. T/NT: UDI: PAD: Transparent / Non-Transparent Unrestricted Digital Information Packet Assembler / Disassembler Bearer Services Fig. 3 (TM2100EU03TM_0001 GSM Services, 7)

  4. T/NT: UDI: PAD: Transparent / Non-Transparent Unrestricted Digital Information Packet Assembler / Disassembler Teleservices Fig. 4 (TM2100EU03TM_0001 GSM Services, 9)

  5. Supplementary Services Fig. 5 (TM2100EU03TM_0001 GSM Services, 11)

  6. Services Applications Fig. 6 (TM2100EU03TM_0001 GSM Services, 13)

  7. Current Applications:Terminal Devices • Mobile equipment: • Car phones • Portables • Handhelds • Transmission power: • 8 W / 4 W (GSM 900/1800) • 2 W / 1 W • Applications/Transmission: • Speech • Short messages (SMS) • Faxes • Data • Internet surfing • Organizer • Mobile banking • Mobile accessories: • Fax devices • Laptops • Digital cameras • Headsets • Barcode readers • GPS receivers • .... Fig. 7 (TM2100EU03TM_0001 GSM Services, 15)

  8. Trend in GSM: speech  data Significance speech: "normal connection" emergency call Traffic volume of data services (total): 1 - 2 % Implementation obligatory Implementation depending on operator SMS: paging, personal short message, remote control, barcode reader, telematics, GPS,... Implementation obligatory afterstart phase other datatransport: internet, e-mail, file transfer, video tele-phony, ... Implementation obligatory fax Year 1992 1994 1996 1998 2000 Fig. 8 (TM2100EU03TM_0001 GSM Services, 17)

  9. Quick transfer of large data volumes (E-Mail, Internet, File transfer, Multimedia) • Improved speech quality • User friendliness • Worldwide availability • Worldwide HPLMN service • Specific services Demands on Mobile Communications Solutions: Phase 2+ Fig. 9 (TM2100EU03TM_0001 GSM Services, 19)

  10. GSM Phase 2+ solutions Services Demands onmobile communications? GSM Phase 2+ GSM Phase 2+ Services Fig. 10 (TM2100EU03TM_0001 GSM Services, 21)

  11. EFR Enhanced Full Rate multi- band / mode satellite roaming e.g. ICO GPRS General Packet Radio Service SOR Support of Optimal Routing MSP Multiple Subscriber Profile UUS User-User Signalling ASCI Advanced Speech Call Items CAMEL Customized Application for Mobile network Enhanced Logic HSCSD High Speed Circuit Switched Data EDGE Enhanced Data rates for the GSM Evolution GSM Phase 2+ Solutions Fig. 11 (TM2100EU03TM_0001 GSM Services, 23)

  12. GSM / ISDN: Data Transmission Rates EDGE 400 350 300 250 GPRS 200 max. data rate [kbit/s] HSCSD 150 100 50 0 ISDN GSM GSM GSM GSM Phase 1/2 Phase 2+ ISDN: Integrated Services Digital Network HSCSD: High Speed Circuit Switched Data GPRS: General Packet Radio Service EDGE: Enhanced Data rates for the GSM Evolution Fig. 12 (TM2100EU03TM_0001 GSM Services, 25)

  13. 9.6  14.4 kbit/s HSCSD High Speed Circuit Switched Data •••• 14.4 kbit/s trans-mission rate 28.8 kbit/s 57.6 kbit/s e.g. moving pictures,video telephone Circuit Switched for continuous data flow only point-to-point no new networkelements SW modifications Disadvantage: not resource efficient smaller HWmodifications Fig. 13 (TM2100EU03TM_0001 GSM Services, 27)

  14. 9.05 kbit/s 13.4 kbit/s 15.6 kbit/s 21.4 kbit/s GPRS General Packet Radio Service bundling: 1 - 8 channels Packet Switched CS-1 up to > 100 kbit/s billing accordingto data volumepossible CS-2 (theoret. 171.2 kbit/s) point-to-multipoint CS-3 (possible) internet, telemetry, fleet management, e-mail, traffic telemetry,.. CS-4 Modifications in Network & Protocol architecture different redundancy depending on air interface quality channelcoding protocol architecturemodifications • Advantage: • resource efficient • direct IP access • prerequisite for UMTS Fig. 14 (TM2100EU03TM_0001 GSM Services, 29)

  15. up to 69.2 •••• GSM (HSCSD) GSM (EDGE) Modulation GMSK 8PSK Carrier width 200 kHz 200 kHz Modulation rate 270.8 kbit/s 813 kbit/s 14.4 kbit/s 69.2 kbit/s bit rate/TS Max. rate 115 kbit/s 553.6 kbit/s EDGE: Enhanced Data rates for the GSM Evolution TSbundling 1 2 3 4 8 data rate/TS [kbit/s] transmission rate up to138.4 kbit/s up to207.6 kbit/s up to553.6 kbit/s • EDGE: • Booster for GPRS (&HSCSD) • High-level modulation(813 instead of 270 kbit/s) • Use of "classical" GSM channel structure • (FDMA/TDMA: 200 kHz; 8 TS with 4.615 ms each) • max. 8 x 69.2 kbit/s = 553.6 kbit/s • meets 3G requirements (Zone 3: rural) Fig. 15 (TM2100EU03TM_0001 GSM Services, 31)

  16. Enhanced Full Rate EFR improved speech codec (13 kbit/s) Speech Transmission in Phase 2+ ASCI Advanced Speech Call Items • Voice Broadcast Service VBS • Voice Group Call Service VGCS • enhanced Multi-Level Precedence • and Pre-Emption eMLPP • For Closed User Groups (GSM-R) • Group and broadcast services • Quick call set-up • Priority control Fig. 16 (TM2100EU03TM_0001 GSM Services, 33)

  17. Advanced Speech Call Items ASCI • Voice Broadcast Service VBS • 1 "speaker“ (MS or fixed network), many listeners • Message for particular groups / particular cells • Only “speaker" interacts with network • Notification (instead of paging) & message in def. cells • "Listener" passive (confirmation message possible) • enhanced Multi-Level • Precedence & Pre-Emption • eMLPP • Priority control for VBS, VGCS • Priority classes: • 5 (subscriber) + 2 (network-internal procedures) • Priority allocation: service provider / SIM Fig. 17 (TM2100EU03TM_0001 GSM Services, 35) • Voice Group Call Service VGCS • Speech group call: 1 group call channel • 1 "speaker", many listeners; group as with VBS • Changing speaker (call initiator  listener mode) • "Transmission rights" in speech pauses • Ended by initiator / VAD

  18. CAMEL Customized Application for Mobile network Enhanced Logic ETSI definition of IN services allowsoperator-specific services usage also withInternational Roaming Implementation in steps: Step 1: Release ‘96 Support of some service definitions e.g. "Call Screening Services", "Call Supervision Services", "Number Translation Services" exchange ofsubscriber information HPLMN  VPLMN Step 2: Release ‘97 other features: download HPLMN-charging information, on-line charging, internal pre-paid, Specialized Resource Functions SRF (add. service info, tones, announcements,..), local info, ... implementation of IN functional elements • Step 3: Release ‘99 • Co-operation with GSM mobility • management • Multiparty calls • Support of UMTS - VHE concept Fig. 18 (TM2100EU03TM_0001 GSM Services, 37)

  19. SIM Toolkit GSM functions SIM Subscriber Identity Module SIM Toolkit • Supplements ME functions without HW modifications • Data download (SMS) • Call control (digit sequence) • Info on cell identity, call status  • application modifications for status change possible • Applications: home banking, booking flights, info services,... • Special security mechanisms ME Mobile Equipment Fig. 19 (TM2100EU03TM_0001 GSM Services, 39)

  20. MExE Mobile station application Execution Environment simplified implementationof operator-dependentapplications user friendly interfaces (internet surfing / mobile phones) SW download JAVA WAP Wireless Application Protocol Fig. 20 (TM2100EU03TM_0001 GSM Services, 41)

  21. Other Phase 2+ Features UUS User to User Signaling SOR Support of Optimal Routing speech + SMS • Direct connection • No detour via HPLMN • VPLMN  HPLMN: only signaling private MSP Multiple Subscriber Profile • Max. 4 different subscriber identities • 1 SIM work Fig. 21 (TM2100EU03TM_0001 GSM Services, 43)

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