第二代移動(dòng)通信系統(tǒng)向第三代移動(dòng)通信系統(tǒng)演進(jìn)-文庫(kù)吧
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【正文】 ymmetric amp。 Symmetric Transmission MultiMedia Applications Global Roaming 3G ? 3G 2G ? 3G Enhanced Voice High Spectral Efficiency MultiEnvironment Operation Vehicular,Outdoor to Indoor, Indoor Office,Satellite Third Generation (ITU) Requirements High Speed Packet amp。 Circuit Data 144 kbps vehicular 384 kbps pedestrian 2 Mbps indoor Wireless Technology Innovation Labs WTI 21 Wireless Technologies Map 100Mbps1010 . 1W ANL ANP ANLas t 1 0 Fee t Las t Mi l eLas t 6 0 1 0 0 Fee tBlu eto o t h /E t h er n etC a bl e Mo demADSL3G Cell u lar /P CSHo meRF2G Cell u lar /P CSF ixe d W ir ele ss( All Categ o r ies )Wireless Technology Innovation Labs WTI 22 UMT SCoreNet wo rkSS 7 Ne t w orkCircuitSw it c hedNetwo rkPacket Da t aNetwo rkUT RA NM A P C ,D,E, F,G, G r, Gf, GcINA P, CA M ELGiIuIS U POperational 3G Network Wireless Technology Innovation Labs WTI 23 Air Interface Evolution to 3G TDMA (IS136) CDMA (IS95) TDMA IS136+ UMTS / WCDMA GSM++ / IS136 HS EDGE/GPRS (Rate 3amp。4) cdma2022 (5MHz) IMT2022 Capable Systems Existing Spectrum New Spectrum GSM+ w/GPRS (Rate 1amp。2) GSM CDMA (ANSI95B) cdma2022 () Wireless Technology Innovation Labs WTI 24 Air Interface Evolution (Based on GSM Infrastructure) L egen d :P DN P ac ke t Data Net w o r kCS N Cir cuit S w it ched Netw o r kS S 7 S ign ali n g S ys t em 7 Ne t w o r k2GWi re l e s sP DN2GWi re l essSS72GWi re l e s sCS NGSM GSM + w / GPRSTD MA ( I S 1 3 6 )2GWi re l e s sCSNG S M/E DG E Radio Acc es sNet w o r k (G E RAN)UMTS Ter r es t r ial Radio Acc es sNet w o r k (UT RAN)Net w o r k S w it chin gS u b sy stem ( NS S )andG P RS S u p p o r t No d e( G S N)3 G W ire le s s Core3 G W ire le s s Ne t work2GWi re l e s sO t h er 3GW ir ele ssNet w o r kWireless Technology Innovation Labs WTI 25 2G vs. 3G Wireless Migration T e l e p h o n eM o d e mRa d i oT o we r ( B T S )W i r e l e s sP DAM S CCe n t r a lO f f i ceRa d i oT o we r ( B T S )A cce s s Ne t wo r kDe v i ce sS e r v i ce s L a y e rCl o s e dS e r v i ce sL a p t o p co m p u t e rDe s kt o p P CT r a n s p o r t Ne t wo r k3 G W i r e l e s sB a ckb o n e i sP a cke t B a s e d3 r d P a r t yA p p l i ca t i o n s2 G A i rI n t e r f a ce2GW ireles s3G A i rI n ter faceI n d i ca t e s B r o a d b a n d A cce s s2 G W i r e l e s sB a ckb o n e i sT DM B a s e dIPS i g n a l i n gHL R/V L RB i l l i n gL o ca t i o nPKIW A PAAADNSS e r v i ceG a t e wa yM S CW i r e l i n e L o ca l L o o pCe l l P h o n eI X CI S P( Da t a )W i r e l e s sI N ( W I N)BSCBSCW i r e l i n e I NWireless Technology Innovation Labs WTI 26 3G Trials cdma2022 Sprint Bell Atlantic IDO / DDI TDMA UWC136HS/EDGE ATamp。T Wireless UMTS NTT DoCoMo Vodafone Air Touch Omnitel Wireless Technology Innovation Labs WTI 27 Wireless Applications Environment AnyPath Unified Messaging Personal Portal Pages Location Database WAP Gateway IP/ATM Core Network SDH/Optical Mobile Access Email Server Voice amp。 Fax Mail server Prepaid Billing Emerce Voice Browser Inter Message Management SMSC CBC Service Applications Network Management USSD Server Micro browser SMS CB USSD CSD Packet VPN External Databases GGSN/SGSN MSC Postpaid Billing Inter LAN/Intra Telephone Applications amp。 Content Applications amp。 Content Customer care Wireless Technology Innovation Labs WTI 28 Packet Network Roadmap Circuit RAN Voice amp。 Data PSTN Wireless Packet Data: ? Add EDGE/GPRS Data Services (TDMA) ? Add cdma2022/MIP Data Services (CDMA) ? Bypass PSTN with Packet IP/ATM Core Network (Voice Tandem) Wireless Multimedia: ? Integrated Multimedia via 3G Packet RAN ? Common Feature Servers for Wireless and Wireline ? Common Core Network for TDMA amp。 UMTS ? Common VoP Network for TDMA, cdma2022 amp。 UMTS RAN Radio Access Network Packet RAN Data Packet Core Network Circuit RAN Voice PSTN 3G Packet RAN Voice amp。 Data Packet Core Network PSTN Circuit Core All IP Network Packet Core/ Hybrid Packet? Wireless Circuit Voice and Low Speed Circuit Data PSTN Gateway PSTN Gateway Feature Server Wireless Technology Innovation Labs WTI 29 IP is Evolving to Meet the Need ? IP Extensions to Support Cellular Attributes – Passive Connectivity – Mobility Management – Handoff Mechanisms – Quality of Service – Billing Mechanisms – Ubiquitous Scalability Wireless Technology Innovation Labs WTI 30 Introduction for 3G Mobile Communication System 1) Why 3G? 2) 2G to 3G Evolution 3) Comparison between 2G , amp。 3G. 4) Standardizing Committee for 3G. 5) Two major proposals for 3G mobile munication. 6) Comparison between WCDMA amp。 cdma2022. 7) Harmonization efforts for global systems. Wireless Technology Innovation Labs WTI 31 3) Comparison between 2G , amp。 3G A s p e c ts 2 G 2 . 5 G 3 GF re q u e n c y b a n d T h e y o p e ra te a tm u lt ip le f re q u e n c yb a n d s , 80 0 9 0 0MHz (ce ll u lar b a n d )amp。 i n 1 . 5 1 . 8 G Hz( P C S b a n d )T h e sa m e a s 2 G Us e o f co m m o ng lo b a l f re q u e n c yb a n d1 8 8 5 – 2 0 2 5 MHzamp。2 2 1 0 – 2 2 0 0 MHzRo a m in g G e n e ra ll y l i m it e d t os p e c if ic re g io nT h e sa m e a
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