SIDE (IRT 3930) UMTS ootused. Loeng 13/2008 Lairibavõrkude teenused Teema - juurdepääs. Ühildatavus. FDD või TDD. Sagedusjaotus WCDMA

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1 SIDE (IRT 3930) Loeng 13/2008 Lairibavõrkude eenused Teema - juurdepääs vo Os elekommunikasiooni õppeool, Parema kvalieediga eenused Suurem biikiirus Q-o-S - Paremad erminaalid - Globaalne urg ooused rendaja Tarbija Operaaor - Kõrge spekrieekiivsus - Odav käigushoidmine - Lihne võrguarendus - Tulevikuga - Globaalne sandard - Suur võrgu kasuusinensiivsus TTÜ raadio- ja sideehnika ins. Juurdepääs avos@lr.u.ee 529 Juurdepääs 530 ccess o people (Voice, Video) PSTN/ ISDN + Ühildaavus Inerne/ Inrane + ccess o inormaion and people (Daa, Mulimedia) FDD või TDD / Core Nework GRN (Iu) UL DL DL Guard period Radio ccess Radio ccess UL erminals / dual-mode erminals erminals ccess o people and inormaion Juurdepääs 531 Duplex gap 2 Frequency division duplex (FDD) Time division duplex (TD D) Juurdepääs MHz carriers Frequency Division Duplex, FDD 3.8 Mcps chip rae Variable spreading codes WCDM Opimized packe access on common or dedicaed channel High specrum eiciency Sagedusjaous ITU llocaions (WRC-92) IMT-2000 IMT-2000 Europe TDD 1800DECT P Japan PHS Uplink Downlink 5.0 MHz US PCS IS-95, DMPS, ms rame Juurdepääs 533 Juurdepääs 53 1

2 Sagedusressurss ( arvis) MHz User Birae kbi/s 15 Biikiirus kasuaja arvis Spreading Facor 256 Chiprae Mchips/s DECT 20 (35) MHz or TDD 2 * 60 MHz FDD Juurdepääs 535 Juurdepääs 536 Direc Sequence - Code Division Muliple ccess (DS-CDM) IS-95 (1.25 MHz) CDM2000 (3.75 MHz) WCDM (5 MHz) Hajuaud spekriga süseem Code MS 1 MS 2 MS 3 5 MHz Juurdepääs 537 Juurdepääs 538 Hajuaud speker Spread Specrum Hajuusegur SF = Juurdepääs 539 Juurdepääs 50 2

3 SD C h a n n e l s a k d j a s l d s a k d j a s l d Hajuaud spekri eelised Edasiarendus -is Channel Qualiy Channel Qualiy Core Nework Iu Core Nework Iu Iur bis bis bis bis BTS BTS BTS BTS Iub Iub Iub Iub Um BSS Node B Node B Node B Node B Uu UTRN Juurdepääs 51 s a k d j a s l d Juurdepääs 52 3GPP & 3GPP Mobile Saion Base Saion Subsysem Nework Subsysem Oher Neworks ETSI RIB TT T1P1 TTC SIM ME BTS MSC/ VLR GMSC PSTN EIR HLR UC PLMN ETSI Members RIB Members TT Members T1P1 Members TTC Members USIM ME Node B SGSN GGSN Inerne Europe Japan Korea US Japan + UTRN Juurdepääs 53 Juurdepääs 5 Kanalid ja realisasioonid Bearer reques Traic Class, Max. Bi rae, Max. Delay, Residual BER... Erinevad kandekanalid TE MT UTRN CN CN Gaeway End-o end service TE Radio Bearer Negoiaion Requesed QoS,, Prioriy, Maximizing Sysem Capaciy TE/MT Local Bearer Bearer bearer service Radio ccess Bearer CN Bearer Exernal Bearer Radio Bearer Iu Bearer Backbone Bearer UTRN realisaion Coding Scheme, MC and RLC Seings, Spreading Facor, Transpor Forma Parameers, Inerleaving... UTR FDD/TDD Physical Bearer Juurdepääs 55 Juurdepääs 56 3

4 UTRN OSI Model Raadiokanalid Radio ccess Bearers UTRN Layer 3 Layer 2 Layer 1 Direc RRC conrol o he physical layer Radio Resource Conrol (RRC) Medium ccess Conrol (MC) Physical layer ir Inerace Logical channels - grouped by inormaion conen - User Daa - Conrol and signaling Transpor channels - grouped by mehod o ranspor Physical channels Physical Channels Disinguished by: - RF Frequency - Channelizaion Code - Spreading Code - Modulaion (I/Q) Phase (uplink) - Timeslo (TDD mode) Node B Radio ccess Bearer Core Nework RB agab ühendusse UTRN-is. RB ühendusel on oleneval eenuses erinevad parameerid Juurdepääs 57 Juurdepääs 58 So Handover (dd/drop) So Handover pilo DD RP DR (mobiil) ühendub mime samal sagedusel ööava ugijaamaga Vajame mimekiirelis vasuvõja => RKE Juurdepääs 59 Juurdepääs 550 Koodmulipleksimisega ühispöördus CDM = SSM + Orhogonal Coding (IS-95, cdma2000, WCDM) Spread Specrum Muliple ccess (SSM) llows muliple CDM ransmiers Pseudo Noise (PN) codes o share he same Radio Frequency Kanalimoodusamise koodid Channelizaion codes CC1 & CC2 CC3,CC & CC5 llalülis kasuaakse kanalikoode kanalie erisamiseks samas ugijaamas. In he Downlink Orhogonal Codes are used o disinguish beween daa channels rom he same Base Saion Orhogonal Coding Channelizaion codes : llows muliple daa channels o co-exis wihin each CDM ransmission Juurdepääs 551 CC1,CC2,CC3 CC1 & CC2 Üleslülis kasuaakse kanalikoode kanalie erisamiseks samas mobiilis. In he Uplink Orhogonal Codes are used o disinguish beween daa channels rom he same mobile Juurdepääs 552

5 Pseudojuhuslikud koodid Pseudo Noise (PN) codes Kanalid ja eenused PN code 1 PN code 1 PN code 3 PN code BS 1 ransmis on PN code 1 2 daa channels Voice (voice, conrol) Conversaion PN1 + OC1 + OC2 2 daa channels (voice, conrol) PN3 + OC1 + OC2 Pilo, Broadcas PN1 + OC P + OC B 1 daa channels (conrol) PN1 + OC3 2 daa channels (1 kbps daa, conrol) PN + OC1 + OC2 Uplink Packe Daa PN code 2 PN code 5 PN code 2 PN code 6 Video conerence Pilo, Broadcas PN2 + OC P + OC B daa channels Video 3 daa channels (38 kbps daa, voice, video, (voice, video, conrol) conerence conrol) PN2 + OC1 + OC2 + OC3 wih Daa PN2 + OC + OC5 + OC6 + OC7 3 daa channels (voice, video, conrol) PN5 + OC1 + OC2 daa channels (38 kbps daa, voice, video, conrol) PN6 + OC1 + OC2 + OC3 + OC BS 2 ransmis on PN code 2 Juurdepääs 553 Juurdepääs 55 WCDM (3G) ja WiMX Terminalide () mulipleks Juurdepääs 555 Juurdepääs 556 Inererens (vasasikused häired) Kuidas areng... Juurdepääs 557 Juurdepääs 558 5

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