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260 Kommunikatsiooniteenuste arendus IRT0080 Loeng 6/2008 Avo Ots telekommunikatsiooni õppetool, TTÜ raadio- ja sidetehnika inst.

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Presentation on theme: "260 Kommunikatsiooniteenuste arendus IRT0080 Loeng 6/2008 Avo Ots telekommunikatsiooni õppetool, TTÜ raadio- ja sidetehnika inst."— Presentation transcript:

1 260 Kommunikatsiooniteenuste arendus IRT0080 Loeng 6/2008 Avo Ots telekommunikatsiooni õppetool, TTÜ raadio- ja sidetehnika inst. avo.ots@ttu.ee

2 261 Video vooülekanne Media Server (Pre- Encoded Video) Radio Network Controller RNC MAC Scheduling at Base Station Mobile User High bandwidth Time-varying with limited data rates

3 262 Mobiilside firmadelt algus...

4 263 Ühildatavus Access to people and information GSM/UMTS dual-mode terminals GSM terminals UMTS terminals GSM Radio Access UMTS Radio Access GSM/UMTS Core Network Internet/ Intranet + PSTN/ ISDN + GRAN (Iu)A Access to information and people (Data, Multi- media) Access to people (Voice, Video)

5 264 GSM & UMTS

6 265 Radio Resource Control (RRC ) Medium Access Control (MAC) Transport channels - grouped by method of transport Physical layer Layer 3 Logical channels - grouped by information content - User Data - Control and signaling Layer 2 1 Air Interface Direct RRC control of the physical layer Physical channels Physical Channels Distinguished by: - RF Frequency - Channelization Code - Spreading Code - Modulation (I/Q) Phase (uplink) - Timeslot (TDD mode) UTRAN OSI Model

7 266 Sagedusressurss (UMTS tarvis) 20 (35) MHz for TDD 2 * 60 MHz FDD 1850 1900 195020002050 2100215022002250 20 603015 30 DECT MHz GSM 1800 60

8 267 Soft Handover UE UE (mobiil) ühendub mitme samal sagedusel töötava tugijaamaga Vajame mitmekiirelist vastuvõtjat => RAKE

9 268 Spreading Factor Chiprate Mchips/s User Bitrate kbit/s 3,84 256 128 64 32 16 8 4 15 30 60 120 240 480 960 Bitikiirus kasutaja tarvis

10 269 UMTS kasutus

11 270 WCDMA (3G) ja WiMAX

12 271 FDD või TDD f t ULDL Duplex gap  f  f f t UL DL 2  f Guard period Frequency division duplex (FDD)Time division duplex (TDD)

13 272 Sagedusalad (... aga)

14 273 Hübriidlahendus

15 274 Industry convergence

16 275 IMS layered architecture

17 276 GSM + teised võrgud Wireline xDSL CATV PS domain SIP SIP/ H.323 SIP/ H.323 3G-324M GW CS PLMN WLAN CS domain GSM CDMA WCDMA EDGE IP Multimedia domain

18 277 Interoperability Vendor YVendor XAB IMSGRX IMS Carrier  Carrier 

19 278 GSM areng GSM BSC MGW Connectivity backbone (IP,..., TDM) MSC Server SGSN Server SCP Connectivity Control Services/Applications HLR Appl Servers MGW GGSN Internet Intranets MGW PSTN/ISDN/ PLMN MSC Server H.323 MGW SIP GSM BSC PoC

20 279 Juurdepääs

21 280 I M S

22 281 IMS in 3GPP Release 5 Frozen in March 2002 IP Multimedia Subsystem (IMS) - Phase 1, basic –Basic architecture –Session Initiation Protocol (SIP) control –Session Definition Protocol (SDP) control –…

23 282 IMS in 3GPP Release 6 Frozen 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

24 283 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./

25 284 Lingid (2) http://www.openmobilealliance.com/ http://en.wikipedia.org/wiki/Next_Generation_Netwo rking http://en.wikipedia.org/wiki/Fixed- Mobile_Convergence_Alliance http://en.wikipedia.org/wiki/IP_Multimedia_Subsyste m


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