LTE Overview LTE Overview by jlhd32

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3G Long Term Evolution is the evolution of the project, began in Toronto in 2004 3GPP meeting. LTE is not 4G technology is widely misunderstood, but between 3G and 4G technology as a transition, is the global standard for 3.9G, 3G is to improve and enhance air access technology, using OFDM and MIMO for its wireless network evolution the only criterion. 20MHz of spectrum in the downlink bandwidth to deliver 326Mbit / s and uplink 86Mbit / s peak rate. Improve the performance of cell edge users, increase cell capacity and reducing system latency.

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									LTE Overview


 NEC Corporation
  May 21st, 2008

                    K. Jay Miyahara
              Corporate Chief Engineer
            Mobile Network Operations Unit
        1
             Kj-miyahara@cw.jp.nec.com
                                  Mobile Evolution
                1992              2002                 2005              2008              2013

                                                                             Mobile         Personalised
                                          Video     Media
     Services   Voice    SMS      MMS
                                          Calls     Clips
                                                               Mobile TV    Triple Play/     Localised
                                                                             Gaming           Services



                                                               HSUPA             LTE
                                                                          HSPA+
  Technology     GSM        GPRS      UMTS          HSDPA       MBMS
                                                                           IMS
                                                                                OFDM             4G
                                                               IP transp.       access



                                                                           Interactive       Anywhere
    User                                                 Real time
                 Voice and Text     Download                               Information        Anytime
 Expectations                                            delivery
                                                                           Swapping           Anyhow



                                                            Bundled Services              User Centric,
    Operators   Voice Centric,     Multimedia Centric,
                                                            @ home, office,              FMS/FMC & NGN
     Strategy    Coverage            Capacity
                                                            Indoor Coverage                  (All IP)


Page 2
                                     User Expectations




    • Low prices – value for money connectivity                                               High speed
                                                                        Email                 access
                                                                              Location Services
    • Higher quality (increased speed and availability –          Financial                       Video
                                                                  Services                        Conferencing
         Broadband everywhere)

    • Simplicity and value added                                     Music Download
                                                                                       Blogging
                                                                                   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



                                   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




               Mobile Data Revenue as % of Total Revenue                     Forecast Growth in Service Traffic for a Typical Mobile
                                                                             User in a Developed Market
    26
    24
    22
    20
    18
    16                                                     2001
%




    14                                                     2005
    12
    10
    8
    6
    4
    2
    0
          UK    FRA    GER    ITA   JPN   ESP    NED   SWE        IRL



           Source: iDATE                                                Source: Analysys




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
                         1 000 000                                                                                                                                    Corporate Services
    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!




         • Rich Voice         • Mobile TV         • Communities/Blogging   • High Speed Access     • Banking
         • Video Telephony    • Video on Demand   • Gaming                 • Email                 • Mobile Payment
         • SMS/MMS            • Music             • Photo/Video Sharing    • Mobile Conferencing   • Mobile Advertising



                                     Same Services. Different Experience




Page 8
                Experience Comparison

         Both technologies can provide high speed rich multimedia services


                                                 3G                              LTE

                 Person-to-Person    Real time audio, poor video         VoIP, rich quality video
                 Communications                quality                        conferencing


                 Content
                                           Streamed and                   Broadcast TV, true on
                 Delivery               downloadable content            demand high quality video


                 Social              Downloadable online games,       Real time gaming experience,
                 Networking          online access of information        sharing of rich content


                 Business               Access to limited online      Fixed-like access experience,
                 Services           information and basic web sites      mobile intranet/extranet


                                     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

            Core Network                                        Evolved Packet Core (SAE)           MME
                                                                                                  logical node
                                           Operator’s IP                                           NAS Security
                                          service network
                                                                                                 Idle State Mobility

            SGSN          GGSN                                            Serving       MME      SAE Bearer Control

                                                                          Gateway
                   IP                                                                           SAE Gateway
                                                                                                   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
                              Iub    transport      transport
<HSPA+>          Iub
                                                                                                     Handover


           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)

      Radio Access                                               Downlink: OFDMA
                               DS-WCDMA
                                                                 Uplink: SC-FDMA
      RAN Latency               <50 ms                                <10 ms

      Carrier Bandwidth          5MHz                         1.4, 3, 5, 10, 15, 20MHz

      Data rate                                               57.6Mbps (uplink, 1x2)
                             11.52 Mbps (uplink)             172.8Mbps (downlink, 2x2)
                           42 Mbps (downlink, 2x2)
                                                              57.6 Mbps (uplink, 1x2)
                                                             326.4Mbps (downlink, 4x4)
      Services            Packet Switched                         Packet Switched




Page 11
                            Comparison of other technologies




                              HSPA (FDD)   HSPA+ (FDD)   EV-DO Rev. A    EV-DO Rev. B


          Channel Width         5 MHz        5 MHz        1.25 MHz       1.25 MHz x N

          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       1.8 Mbps x N
                                                                        5.4 Mbps@N=3


          Modulation (DL)      ~16 QAM      ~64QAM        ~16QAM          ~64QAM

          Modulation (UL)      ~BPSK        ~16 QAM        ~8PSK           ~8PSK


Page 12
                  Comparison b/w HSPA+ and LTE
                                -Technical details-



                              HSPA+                                    LTE

   NW Structure
                       HSPA+ NB  RNC  CN-PS                       eNB  EPC


   Transport           Mixed ATM &IP, possible all IP                  All IP


   MIMO Support         Yes (up to 2x2 in downlink          Yes (up to 4x4 in downlink
                           No MIMO in uplink)                  And 2x2 in uplink)


   Modulation           QPSK+16QAM for E-DCH
                        Extra 64QAM for HS-DSCH               QPSK+16QAM+64QAM


  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


                  TSG-RAN                           CN
            Radio Access Networks                          GMSC
                                     LMSC

                                               CS
                                                CS
                                             Domain
                                              Domain              PSTN
                       UTRAN


                                     SGSN                  GGSN
               Node-B      RNC
                                                PS
                                                 PS
     UE                                       Domain
                                               Domain             Internet
                  TSG-CT
          Core Network & Terminals


Page 14
                                3GPP Rel8-LTE Standardization

                                2007                      2008                               2009
                                 Dec      Mar           Jun            Sep      Dec        Mar          Jun
          Phy ch, Modulation      F
                     Coding           F
     RAN1
                  Procedure           F
               Measurement                      F


               UE Idle mode         A           F
               UE capability        A                       F
                        MAC         A           F                                     A: Approval
     RAN2               RLC         A           F
                       PDCP       A/F                                                 F: Functionally
                         RRC        A                       F             F
                                                                                         Freezing
                                                    Protocol&Tabular    ASN.1


                      Layer 1         A         F
               Sig. transport         A         F
     RAN3     Data transport          A         F
                     Protocol         A                     F             F
                                                    Protocol&Tabular    ASN.1

                  UE Tx/Rx                 A/F
     RAN4        eNB Tx/Rx                 A/F
                       RRM                   A                            F
                   eNB Test                A/F

               Common env.                                                        A
     RAN5         Signaling                                                       A
                         RF                                               A

                                                                                      出典:3GPP RP-071019

Page 15
          Migration Scenario

                  +




               HSPA+(RAN)
              HSPA+(RAN)     HSPA+(RAN)
                            HSPA+(RAN)
                 3G (CN)
                3G (CN)      Pre-SAE (CN)
                            Pre-SAE (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

								
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