LTE Overview

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Higher data rate and reduced latency for multimedia rich applications (competitiveness of overall customer proposition with rival technologies)

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Nội dung Text: LTE Overview

LTE Overview NEC Corporation May 21st, 2008 K. Jay Miyahara Corporate Chief Engineer Mobile Network Operations Unit Kj-miyahara@cw.jp.nec.com 1
Mobile Evolution 1992 2002 2005 2008 2013 Mobile Personalised Video Media Services Triple Play/ Localised Voice SMS MMS Mobile TV Calls Clips Gaming Services HSUPA LTE HSPA+ Technology GSM 4G MBMS OFDM GPRS UMTS HSDPA IMS IP transp. access Interactive Anywhere User Real time Information Anytime Voice and Text Download delivery Expectations Swapping Anyhow Bundled Services User Centric, Operators Voice Centric, Multimedia Centric, @ home, office, FMS/FMC & NGN Coverage Capacity Strategy Indoor Coverage (All IP) Ｐage 2
User Expectations • Low prices – value for money connectivity High speed access Email Location Services • Higher quality (increased speed and availability – Financial Video Services Conferencing Broadband everywhere) • Simplicity and value added Blogging Music Download Video Download Browsing • Flexibility (personalised and more flexible tariff plans) Mobile TV Gaming • Multitude of services (new services) • Ubiquity (anywhere, anytime) Positioning SMS Photos Voice • Technology Agnostic (use any device, use one device) MMS Ｐage 3
Mobile Operators Expectations Mobile Higher data rate and reduced latency for multimedia rich Data rate applications (competitiveness of overall customer proposition with and latency rival technologies) Architecture Architecture simplicity and reduced protocol complexity Mobility Seamless handover ensuring service continuity with legacy systems Reduced migration, capital and operational costs (CAPEX/OPEX), Cost of ownership Investment protection by reusing existing assets Spectrum Greater efficiency and flexibility Ｐage 4
Data Volume is Increasing Mobile Operators will have to invest in NW expansion to handle the increase in traffic Forecast Growth in Service Traffic for a Typical Mobile Mobile Data Revenue as % of Total Revenue User in a Developed Market 26 24 22 20 18 2001 16 % 2005 14 12 10 8 6 4 2 0 UK FRA GER ITA JPN ESP NED SWE IRL Source: Analysys Source: iDATE Ｐage 5
World Forecast per Service Category Total World Usage Forecast - Voice and Data Services 1 600 000 1 400 000 1 200 000 Machine to Machine Corporate Services 1 000 000 Terabytes per Year M-Commerce and Finance Multimedia Communication 800 000 Rich Multimedia information and entertainment Multimedia Messaging Simple Information and Entertainment 600 000 Simple Messaging and Community Services Voice Communication 400 000 200 000 - 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 Source: Report ITU-R M.2072 “World mobile telecommunication market forecast” Ｐage 6
Need for Network Evolution Faster, Simpler, More Efficient, Cheaper Highly efficient radio technology  Increased spectrum efficiency for larger carriers and therefore increase capacity  Lower cost per bit and lower prices for the end user Simplified protocol stack & all IP network  Reduced latency  Easier network management  CAPEX and OPEX savings Flexibility and scalability in deployment  Operating in various frequencies and bandwidths  Operators can start with smaller deployment and increase bandwidth as demand increase  Supports resource aggregation of radio band resources Ｐage 7
Future Services Empowered by LTE Both technologies can support the same services. Main difference is service latency and throughput for the user! • Communities/Blogging • High Speed Access • Rich Voice • Mobile TV • Banking • Gaming • Email • Video Telephony • Video on Demand • Mobile Payment • Photo/Video Sharing • Mobile Conferencing • SMS/MMS • Music • Mobile Advertising Same Services. Different Experience Ｐage 8
Experience Comparison Both technologies can provide high speed rich multimedia services 3G LTE Real time audio, poor video Person-to-Person VoIP, rich quality video quality conferencing Communications Content Streamed and Broadcast TV, true on Delivery downloadable content demand high quality video Downloadable online games, Social Real time gaming experience, online access of information Networking sharing of rich content Access to limited online Fixed-like access experience, Business information and basic web sites mobile intranet/extranet Services Payment transactions and Mobile is a secure payment M-Commerce facilities over mobile device Ｐage 9
Comparison b/w HSPA+ and LTE -System Architecture- One RAN node: eNB Evolved Packet Core (SAE) Core Network MME logical node Operator’s IP NAS Security service network Idle State Mobility SGSN GGSN Serving MME SAE Bearer Control Gateway SAE Gateway IP logical node Mobility Anchoring S1-MME S1-MME Iu Iu eNodeB logical node Iur S1-U Inter Cell RRM RNC S1-U Radio Admission RNC Control UTRAN ATM/IP IP Radio Bearers Control transport transport Iub Handover Iub NB NB Scheduling eNB PDCP eNB X2 RRC function MAC/RLC EUTRAN (LTE) PHY Ｐage 10
Comparison b/w HSPA+ and LTE -System Specification- HSPA+ LTE Spectrum 3G spectrum (2GHz and additional bands) Downlink: OFDMA Radio Access DS-WCDMA Uplink: SC-FDMA RAN Latency
Comparison of other technologies HSPA (FDD) HSPA+ (FDD) EV-DO Rev. B EV-DO Rev. A Channel Width 5 MHz 5 MHz 1.25 MHz x N 1.25 MHz Peak Rate (DL) 14.4 Mbps 21.6 Mbps 3.1 Mbps 4.9 Mbps x N 43.2 Mbps 14.7 Mbps@N=3 (2x2 MIMO) Peak Rate (UL) 5.7 Mbps 11.4 Mbps 1.8 Mbps x N 1.8 Mbps 5.4 Mbps@N=3 Modulation (DL) ～16 QAM ～64QAM ～64QAM ～16QAM Modulation (UL) ～BPSK ～16 QAM ～8PSK ～8PSK Ｐage 12
Comparison b/w HSPA+ and LTE -Technical details- HSPA+ LTE NW Structure eNB  EPC HSPA+ NB  RNC  CN-PS Transport All IP Mixed ATM &IP, possible all IP MIMO Support Yes (up to 4x4 in downlink Yes (up to 2x2 in downlink And 2x2 in uplink) No MIMO in uplink) Modulation QPSK+16QAM for E-DCH QPSK+16QAM+64QAM Extra 64QAM for HS-DSCH Support MBMS Yes (limited capacity via FACH) Yes (enhanced capacity via DL-MCH) Ｐage 13
Scope of 3GPP Technology Specifications Group TSG-SA Service & System Aspects CN TSG-RAN Radio Access Networks GMSC LMSC CS CS Domain PSTN Domain UTRAN SGSN GGSN Node-B RNC PS PS UE Domain Internet Domain TSG-CT Core Network & Terminals Ｐage 14
3GPP Rel8-LTE Standardization 2007 2008 2009 Dec Mar Jun Sep Dec Mar Jun F Phy ch, Modulation F Coding RAN1 F Procedure F Measurement F A UE Idle mode F A UE capability A: Approval A F MAC RAN2 A F RLC F: Functionally A/F PDCP A F F RRC Freezing Protocol&Tabular ASN.1 A F Layer 1 A F Sig. transport RAN3 A F Data transport A F F Protocol Protocol&Tabular ASN.1 A/F UE Tx/Rx A/F eNB Tx/Rx RAN4 A F RRM A/F eNB Test A Common env. A RAN5 Signaling A RF 出典：3GPP RP-071019 Ｐage 15
Migration Scenario + HSPA+(RAN) HSPA+(RAN) HSPA+(RAN) HSPA+(RAN) Pre-SAE (CN) 3G (CN) Pre-SAE (CN) 3G (CN) Ｐage 16
How Japanese market moves towards LTE? DoCoMo selected LTE (2.1GHz, Band1, currently used for 3G) NEC plans to deliver commercial product without DoCoMo specific application at e/2008. SBM planning to introduce LTE on 1.5GHz (Band11, currently used for PDC). KDDI under investigation between LTE or UMB (Ultra Mobile Broadband) Ｐage 17
Conclusion • End-user needs already exists/beginning to see the onset. • Operators needs exists • Industry activities such as LSTI, NGMN are already in place to assure inter-operability and alignment of technology/standards/market requirements/spectrum • Many operators are planning to deploy LTE starting 2010 Ｐage 18