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Kommunikatsiooniteenuste arendus IRT0080

Kommunikatsiooniteenuste arendus IRT0080. Loeng 6/2008 Avo Ots telekommunikatsiooni õppetool, TTÜ raadio- ja sidetehnika inst. avo.ots@ttu.ee. Radio Network Controller. RNC. High bandwidth. Media Server (Pre-Encoded Video). Time-varying with limited data rates.

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Kommunikatsiooniteenuste arendus IRT0080

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  1. Kommunikatsiooniteenuste arendusIRT0080 Loeng 6/2008 Avo Otstelekommunikatsiooni õppetool, TTÜ raadio- ja sidetehnika inst.avo.ots@ttu.ee

  2. Radio Network Controller RNC High bandwidth Media Server (Pre-Encoded Video) Time-varying with limited data rates MAC Scheduling at Base Station Mobile User Mobile User Video vooülekanne

  3. Mobiilside firmadelt algus...

  4. Access toinformationand people(Data, Multi-media) Access topeople(Voice, Video) PSTN/ISDN + Internet/Intranet + GSM/UMTS Core Network A GRAN (Iu) GSM Radio Access UMTS Radio Access GSM terminals GSM/UMTS dual-modeterminals UMTS terminals Access to people and information Ühildatavus

  5. Base Station Network Subsystem Mobile Station Subsystem Other Networks MSC/ GMSC BSC PSTN VLR BTS ME SIM PLMN EIR HLR AUC RNS GGSN SGSN Internet Node RNC ME B USIM UTRAN + S D GSM & UMTS

  6. UTRAN OSI Model Radio Resource Control (RRC) Layer 3 Logical channels - grouped by information content - User Data - Control and signaling Layer 2 Medium Access Control (MAC) Transport channels - grouped by method of transport Physical layer Layer 1 Physical channelsPhysical Channels Distinguished by: - RF Frequency - Channelization Code - Spreading Code - Modulation (I/Q) Phase (uplink) - Timeslot (TDD mode) Direct RRC control of the physical layer Air Interface

  7. Sagedusressurss (UMTS tarvis) 1900 2100 2150 2200 2250 1850 1950 2000 2050 MHz 60 30 20 20 60 30 15 GSM 1800 DECT 2 * 60 MHz FDD 20 (35) MHz for TDD

  8. Soft Handover UE • UE (mobiil) ühendub mitme samal sagedusel töötava tugijaamaga • Vajame mitmekiirelist vastuvõtjat => RAKE

  9. User Bitrate kbit/s Spreading Factor Chiprate Mchips/s 3,84 3,84 3,84 3,84 3,84 3,84 3,84 15 30 60 120 240 480 960 256 128 64 32 16 8 4 Bitikiirus kasutaja tarvis

  10. UMTS kasutus

  11. WCDMA (3G)ja WiMAX

  12. FDD või TDD t t UL DL DL Guard period UL f f D D Duplex gap f f D 2 f Frequency division duplex (FDD) Time division duplex (TDD)

  13. Sagedusalad ( ... aga)

  14. Hübriidlahendus

  15. Industry convergence

  16. IMS layered architecture

  17. GSM + teised võrgud CS PLMN GSM CDMA WCDMA EDGE CS domain 3G-324M GW IP Multimedia domain PS domain SIP WLAN SIP/ H.323 xDSL CATV Wireline SIP/ H.323

  18. A Vendor X Vendor Y B Carrier  Carrier  IMS GRX GRX IMS Interoperability

  19. Appl Servers Services/Applications PoC SCP HLR SIP Control MSCServer SGSNServer MSCServer H.323 Connectivity Internet Intranets MGW GGSN Connectivity backbone (IP, ..., TDM) GSM BSC MGW MGW MGW PSTN/ISDN/PLMN GSM BSC GSM BSC GSM areng

  20. Juurdepääs

  21. I M S

  22. IMS in 3GPP Release 5Frozen in March 2002 • IP Multimedia Subsystem (IMS) - Phase 1, basic • Basic architecture • Session Initiation Protocol (SIP) control • Session Definition Protocol (SDP) control • …

  23. IMS in 3GPP Release 6Frozen in March 2005 • IP Multimedia Subsystem (IMS) - Phase 2, enhancements • 3GPP enablers for services like Push to Talk over Cellular (PoC) • Group Management • Conferencing • Messaging • Interworking with CS networks • Lawful intercept

  24. Lingid (1) http://www.3gpp.org/ http://www.3gpp2.org/ http://en.wikipedia.org/wiki/WCDMA http://en.wikipedia.org/wiki/3G http://www.umts.de./

  25. Lingid (2) http://www.openmobilealliance.com/ http://en.wikipedia.org/wiki/Next_Generation_Networking http://en.wikipedia.org/wiki/Fixed-Mobile_Convergence_Alliance http://en.wikipedia.org/wiki/IP_Multimedia_Subsystem

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