SIDE (IRT 3930) Loeng 12/2011 Mobiilne lairiba Teema - teenused. Avo Ots. telekommunikatsiooni õppetool,
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1 SIDE (IRT 3930) Loeng 12/2011 Mobiilne lairiba Teema - teenused Avo Ots telekommunikatsiooni õppetool, TTÜ raadio- ja sidetehnika inst. avots@lr.ttu.ee Teenused 441
2 UMTS ootused Parema kvaliteediga teenused Suurem bitikiirus Q-o-S - Paremad terminaalid - Globaalne turg Tarbija - Kõrge spektriefektiivsus - Odav käigushoidmine - Lihtne võrguarendus - Tulevikuga - Globaalne standard - Suur võrgu kasutusintensiivsus Arendaja Operaator Teenused 442
3 Kulud ja tulud (link budget) 10 W 10 db Sumbuvus? 6 db TA = 8 30 db/km Teenused 443
4 WCDMA 5 MHz carriers Frequency Division Duplex, FDD 3.84 Mcps chip rate Variable spreading codes Optimized packet access on common or dedicated channel High spectrum efficiency f P 5.0 MHz t 10 (2) ms frame Teenused 444
5 Sageduskasutus UMTS tarvis Teenused 445
6 Versioonid (...UMTS) 3GPP Rel /99 3GPP Rel 4 03/01 3GPP Rel 5 03/02 3GPP Rel 6 2H/04 3GPP Rel 7 06/07 Further Releases Japan Europe (pre-commercial) Europe (commercial) HSDPA (commercial) HSUPA (commercial) Teenused 446
7 Mobiilne andmeside EDGE GSM HSCSD GPRS WCDMA FDD HSDPA/ HSUPA LTE TD-CDMA TDD HCR HSDPA/ HSUPA TD-SCDMA TDD LCR cdmaone (IS-95) cdma2000 cdma2000 1XEV - DO cdma2000 1XEV - DV Teenused 447
8 Ühildatavus Access to people (Voice, Video) PSTN/ ISDN + Internet/ Intranet + Access to information and people (Data, Multimedia) A GSM/UMTS Core Network GRAN (Iu) GSM Radio Access UMTS Radio Access GSM terminals GSM/UMTS dual-mode terminals UMTS terminals Access to people and information Teenused 448
9 Struktuur ja seosed Uu Iu USIM Node B Node B RNC MSC/VLR GMSC PLMN PSTN ISDN Cu Iub Iur HLR ME UE Node B Node B RNC UTRAN SGSN GGSN CN Internet External networks Teenused 449
10 FDD või TDD t t UL DL DL Guard period UL D f Duplex gap D f f Frequency division duplex (FDD) 2 D f Time division duplex (TDD) f Teenused 450
11 Sagedusressurss (UMTS tarvis) MHz GSM 1800 DECT 20 (35) MHz for TDD 2 * 60 MHz FDD (190 Mhz) 451
12 Direct Sequence - Code Division Multiple Access t (DS-CDMA) IS-95 (1.25 MHz) CDMA2000 (3.75 MHz) WCDMA (5 MHz) Code MS 1 MS 2 MS 3 f 5 MHz Teenused 452
13 CDMA vs WCDMA СDMA2000 WCDMA (UMTS) F1 F2 F3 GUARD GUARD GUARD GUARD 1X 1Х EVDO Wideband Carrier 1.25 MHz MHz. 5 MHz. Teenused 453
14 Hajutatud spektriga süsteem Teenused 454
15 Hajutatud spekter Spread Spectrum Teenused 455
16 Hajutustegur SF = 4 Teenused 456
17 Bitikiirus kasutaja tarvis User Bitrate kbit/s Spreading Factor Chiprate Mchips/s 3,84 3,84 3,84 3,84 3,84 3,84 3,84 Teenused 457
18 Edasiarendus GSM-ist GSM Core Network A Iu A UMTS Core Network Iu RNS RNS BSC BSC Iur Abis Abis Abis Abis RNC RNC BTS BTS BTS BTS Iub Iub Iub Iub Um GSM BSS Node B Node B Node B Node B UE Uu UTRAN C h a4 n n e l s a k d j f l ö l a d k s f j a s l d f ö a d ö l k d q w e r r t i u o d k l c. s a k d j f l ö l a d k s f j a s l d f ö a d ö l k d q w e r r t i u o d k l c. s a k d j f l ö l a d k s f j a s l d f ö a d ö l k d q w e r r t i u o d k l c. UE Teenused 458
19 3GPP (asutamine) 3GPP ETSI ARIB TTA T1P1 TTC ETSI Members ARIB Members TTA Members T1P1 Members TTC Members Europe Japan Korea USA Japan Teenused 459
20 S D GSM & UMTS Mobile Station Base Station Subsystem Network Subsystem Other Networks SIM ME BTS BSC MSC/ VLR GMSC PSTN EIR HLR AUC PLMN RNS USIM ME Node B RNC SGSN GGSN Internet + UTRAN Teenused 460
21 Kanalid ja realisatsioonid Bearer request Traffic Class, Max. Bit rate, Max. Delay, Residual BER... Radio Bearer Negotiation Requested QoS, Priority, Maximizing System Capacity UTRAN realisation Coding Scheme, MAC and RLC Settings, Spreading Factor, Transport Format Parameters, Interleaving... Teenused 461
22 Erinevad kandekanalid UMTS TE MT UTRAN CN CN Gateway TE End-to end service TE/MT Local Bearer Service UMTS Bearer Service UMTS bearer service External Bearer Service Radio Access Bearer Service CN Bearer Service Radio Bearer Service Iu Bearer Service Backbone Bearer Service UTRA FDD/TDD Service Physical Bearer Service Teenused 462
23 UTRAN OSI Model Layer 3 Radio Resource Control (RRC) Layer 2 Layer 1 Direct RRC control of the physical layer Medium Access Control (MAC) Physical layer Air Interface Logical channels - grouped by information content - User Data - Control and signaling Transport channels - grouped by method of transport Physical channels Physical Channels Distinguished by: - RF Frequency - Channelization Code - Spreading Code - Modulation (I/Q) Phase (uplink) - Timeslot (TDD mode) Teenused 463
24 UTRAN Raadiokanalid Radio Access Bearers UE Node B RNC Core Network Radio Access Bearer RAB tagab ühendusse UTRAN-is. RAB ühendusel on olenevalt teenustest erinevad parameetrid Teenused 464
25 Kärjevahetus UE1 BS 1 BS 2 Teenused 465
26 Soft Handover (Add/Drop) pilot ADD RP DR Teenused 466
27 Soft Handover UE UE (mobiil) ühendub mitme samal sagedusel töötava tugijaamaga Vajame mitmekiirelist vastuvõtjat => RAKE Teenused 467
28 Koodmultipleksimisega ühispöördus CDMA = SSMA + Orthogonal Coding (IS-95, cdma2000, WCDMA) Spread Spectrum Multiple Access (SSMA) Allows multiple CDMA transmitters Pseudo Noise (PN) codes to share the same Radio Frequency Orthogonal Coding Channelization codes : Allows multiple data channels to co-exist within each CDMA transmission Teenused 468
29 Kanalimoodustamise koodid Channelization codes CC1 & CC2 CC3,CC4 & CC5 Allalülis kasutatakse kanalikoode kanalite eristamiseks samas tugijaamas. In the Downlink Orthogonal Codes are used to distinguish between data channels from the same Base Station CC1,CC2,CC3 CC1 & CC2 Üleslülis kasutatakse kanalikoode kanalite eristamiseks samas mobiilis. In the Uplink Orthogonal Codes are used to distinguish between data channels from the same mobile Teenused 469
30 Pseudojuhuslikud koodid Pseudo Noise (PN) codes PN code 1 PN code 1 PN code 3 PN code 4 BS 1 transmits on PN code 1 PN code 2 PN code 2 PN code 5 PN code 6 BS 2 transmits on PN code 2 Teenused 470
31 Kanalid ja teenused Voice Conversation 2 data channels (voice, control) PN1 + OC1 + OC2 2 data channels (voice, control) PN3 + OC1 + OC2 Pilot, Broadcast PN1 + OC P + OC B 1 data channels (control) PN1 + OC3 2 data channels (14 kbps data, control) PN4 + OC1 + OC2 Uplink Packet Data Video conference 3 data channels (voice, video, control) PN2 + OC1 + OC2 + OC3 3 data channels (voice, video, control) PN5 + OC1 + OC2 Pilot, Broadcast PN2 + OC P + OC B 4 data channels (384 kbps data, voice, video, control) PN2 + OC4 + OC5 + OC6 + OC7 4 data channels (384 kbps data, voice, video, control) PN6 + OC1 + OC2 + OC3 + OC4 Video conference with Data Teenused 471
32 Kanali ülekandekiiruse tagamine Instantaneous EsNo [db] QAM3/4 16QAM2/4 QPSK3/4 QPSK2/4 QPSK1/ Time [number of TTIs] Teenused 472
33 Terminalide (UE) multipleks Teenused 473
34 Asjatundmine Protocol test suite Contribs to air interface base specs Define regulatory requirements Marketing and promotion Certification Network interface specs Air interface base specs Mobility extension Management specs Teenused 474
35 Traadita lairiba standardid IEEE 802 WAN ETSI UMTS, EDGE (GSM) WiMAX* IEEE WirelessMAN MAN HiperMAN & HiperAccess WiFi* IEEE WirelessLAN LAN HiperLAN/2 RLAN IEEE Bluetooth PAN ETSI BRAN Teenused 475
36 WCDMA (3G) ja WiMAX Teenused 476
37 Sagedusalad (... aga) Teenused 477
38 Interferents (vastastikused häired) Teenused 478
39 MAN ja WAN WiMax WiMax EDGE CDMA2000/ 1 x EV-DO WCDMA/ UMTS Standard e (2005) 2,5G (3G) 3G Kasutus WMAN Statsionaarne WMAN Mobiilne WWAN WWAN WWAN Läbilaskevõime kuni 75 Mbit/s (20 MHz riba) kuni 30 Mbit/s (10 MHz riba) kuni 384 Kbit/s kuni 2,4 Mbit/s (tavaliselt Kbit/s) kuni 2 Mbit/s (kuni 18 Mbit/s kasutades HSDPA) Ulatus tavaliselt 6-10 km tavaliselt 1,6-5 km tavaliselt 1,6-8 km tavaliselt 1,6-8 km tavaliselt 1,6-5 km Sagedusala allpool 11 GHz 2 6 GHz 900, 1800 MHz 450 MHz 1900, 2100, 2500 MHz Teenused 479
40 Lõpulingid (12) communications_system Teenused 480
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