SIDE (IRT 3930) Loeng 12/2010 Mobiilne lairiba Teema - teenused Avo Ots telekommunikatsiooni õppetool, TTÜ raadio- ja sidetehnika inst. avots@lr.ttu.ee Teenused 397
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 398
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 ms frame Teenused 399
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 400
FDD või TDD t t UL DL DL Guard period UL Df Duplex gap f Df Frequency division duplex (FDD) 2Df Time division duplex (TDD) f Teenused 401
Sagedusjaotus 1850 1900 1950 2000 2050 2100 2150 2200 ITU Allocations (WARC-92) IMT-2000 MSS IMT-2000 MSS Europe UMTS TDD GSM1800DECT MSS MSS UMTS Uplink Downlink Japan PHS MSS MSS USA PCS IS-95, DAMPS, GSM1900 MSS MSS Teenused 402
Sagedusressurss (UMTS tarvis) 1900 1920 2110 1850 2000 2050 2100 2200 2250 MHz 20 20 60 30 15 60 30 GSM 1800 DECT 20 (35) MHz for TDD 2 * 60 MHz FDD (190 Mhz) 403
Sageduskasutus US Regulation Unlicensed EIRP 4W Licensed MMDS No FCC License Unlicensed EIRP 200mW Indoor EIRP 1W No FCC License Unlicensed EIRP 4W ETSI Regulation Unlicensed EIRP 100mW Licensed* PMP Licensed PMP-Radio Unlicensed EIRP 200mW Indoor Unlicensed EIRP 1W No CEPT Rec. 2.4... 2.4835 2.5... 2.686 3.4... 3.6 5.15... 5.35 5.470... 5.725 5.725... 5.825 WiFi occupied Frequency Bands / GHz Teenused 404
Bitikiirus kasutaja tarvis User Bitrate kbit/s 15 30 60 120 240 480 960 Spreading Factor 256 128 64 32 16 8 4 Chiprate Mchips/s 3,84 3,84 3,84 3,84 3,84 3,84 3,84 Teenused 405
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 406
CDMA vs WCDMA СDMA2000 WCDMA (UMTS) F1 F2 F3 GUARD GUARD GUARD GUARD 1X 1Х EVDO Wideband Carrier 1.25 MHz. 1.25 MHz. 5 MHz. Teenused 407
Hajutatud spektriga süsteem Teenused 408
Hajutatud spekter Spread Spectrum Teenused 409
Hajutustegur SF = 4 Teenused 410
Hajutatud spektri eelised Channel Quality Channel Quality f f Teenused 411
Edasiarendus GSM-ist A GSM Core Network Iu A UMTS Core Network Iu Abis RNS BSC Abis RNC BSC BTS BTS BTS BTS Iur Abis RNS RNC Iub Iub Iub Iub Um GSM BSS Node B Node B Node B Node B UE Abis 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 412
3GPP (asutamine) 3GPP ETSI ARIB TTA T1P1 TTC ETSI Members ARIB Members TTA Members T1P1 Members TTC Members Europe Japan Korea USA Japan Teenused 413
SD 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 414
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 415
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 416
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 417
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 418
Soft Handover (Add/Drop) pilot ADD RP DR Teenused 419
Soft Handover UE UE (mobiil) ühendub mitme samal sagedusel töötava tugijaamaga Vajame mitmekiirelist vastuvõtjat => RAKE Teenused 420
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 421
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 422
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 423
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 424
Interferents (vastastikused häired) Teenused 425
Sagedusalad (... aga) Teenused 426
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 427
Traadita lairiba standardid IEEE 802 WAN ETSI UMTS, EDGE (GSM) WiMAX* IEEE 802.16 WirelessMAN MAN HiperMAN & HiperAccess WiFi* IEEE 802.11 WirelessLAN LAN HiperLAN/2 RLAN IEEE 802.15 Bluetooth PAN ETSI BRAN Teenused 428
WCDMA (3G) ja WiMAX Teenused 429
Terminalide (UE) multipleks Teenused 430
MAN ja WAN WiMax WiMax EDGE CDMA2000/ 1 x EV-DO WCDMA/ UMTS Standard 802.16-2004 802.16e (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 300 600 Kbit/s) kuni 2 Mbit/s (kuni 10 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 MHz Teenused 431
Lõpulingid (12) http://www.3gpp.org/ http://en.wikipedia.org/wiki/wcdma http://en.wikipedia.org/wiki/universal_mobile_tele communications_system http://www.umts.de./ http://en.wikipedia.org/wiki/3g Teenused 432