MIMO-OFDM in Long Term Evolution (LTE) by mercy2beans117

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									    MIMO-OFDM in Long Term Evolution (LTE)
    Si Nguyen
    Global Product Marketing – Mobility Networks
    10/18/2006




1                               Nortel Confidential Information
Agenda

> Why LTE Now?
> LTE Baseline Technologies
> Key Aspects of LTE Service Roll-Out
> Summary




2                       Nortel Confidential Information
 Changes Underway with Devices, Applications &
 Market Place – A New Era for the Industry

                                                                         Converging market place
                                More demanding applications              >Colliding business plans
New Types of                    >Interactive online gaming
Devices/Connectivity                                                     >Service continuity with ubiquitous
                                >IMS rich voice services                 broadband access
>MP3/iPOD                                                                >Competing Technology (WIMAX,
                                >Video explosion
>Consumer Products                                                       Rev-C, LTE)
                                >Mobile TV
>Embedded wireless – laptops,
game devices …




            Needs: Capacity/Performance, Cost and Seamless Experience
 3                                     Nortel Confidential Information
LTE Delivers Drastic Shift in Cost Structure,
Capacity & Performance to Support the Masses

                              120%                                                                  4
                                                                                  3.5 Mbps
                                     100%                                                           3.5




                                                                                                          Typical Throughput (Mbps)
                              100%
        $/ Mbps as % of GSM




                                                                                                    3                                 3-5X Spectral efficiency




                                                                                             ty
                                                                                       Re s
                              80%




                                                                                         ali
                                                                                    d a les
                                                                                                    2.5                               and new design eNodeB




                                                                                  an ire
                              60%                                                                   2                                 Flat architecture - Less




                                                                                db g W
                                                                                                                                      Nodes to build/manage




                                                                           Br akin
                                                                                                    1.5
                              40%                     36%     1 Mbps
                                                                                                                                      Lower spares inventory




                                                                              M
                                                                             oa
                                                                                                    1
                              20%                                                                                                     Low cost IP & DSP
                                                                 9%                                 0.5
                                                                                     <1%
                               0%                                                                   0                                 technology
                                     GPRS         UMTS         HSDPA                LTE
    Data source: Nortel              <2003        2004          2006                2008+
                                             $/Mbps         Typical Throughput (DL)



> GPRS/EDGE/UMTS introduced PS wireless data to the world
> HSDPA/HSUPA deliver much higher performance making mobile
  broadband a viable alternative but with limited capacity & still costly
> LTE will deliver the right cost structure making mobile broadband
  affordable for the masses
4                                                                 Nortel Confidential Information
LTE Changes the Cost Structure with OFDM-
MIMO and a Flat All IP-based Architecture

                                                            …
    Peak Performance DL                                                                   Power Efficient UL
    > OFDM/OFDMA in the DL                                       > SC-FDMA – Lower PAR
        • Spectral Efficiency (3-5x Rel’6)                               • Longer mobile battery life
        • Resistant to Multi-path interference                           • Larger cell coverage
    > MIMO                                                       > Multi-user (Virtual) MIMO
        • Doubles the throughput                                         • Simplifies mobile implementation
        • Deployment simplicity                                          • 25% increase in cell bandwidth


          Scalable, Reusable and Compatible with 3G Access Networks
    > Scalable spectrum allocation (1.25, 2.5, 5, 10, 15, 20MHz) – great for in-band deployment
    > Inter 2G/3G/LTE & inter Non-3GPP mobility– smooth network migration to LTE and beyond

       Flat All IP Architecture for Cost Reduction and Performance
    > Reduce CAPEX and OPEX Costs                                                                               PSTN

                                                                                                              LTE        IMS
    > Higher Network Performance                                                                              AGW       Intranet
        • Efficient routing - reduce Latency (20 ms RTD)      LTE                                                       s
                                                                         eNode B
        • Increasing Throughput (Peak @ 100/50Mbps DL/UL)                                                           Internet
        • Always On – Less than 100ms transition from camped-state to active

5                                                Nortel Confidential Information
OFDM Improves Radio Access Efficiency
Moving from Voice to Broadband with VoIP




                                                                                                 TDMA
    FDMA



                                Frequency                                            Frequency



                      Time                                            Time
                                                                       TDMA, PDC
            AMPS, TACS, NMT        1G                    2G            GSM    GPRS/EDGE



                                   4G                    3G
    OFDMA




                                                                                                 CDMA
                                                                                   Frequency
                                Frequency


                                                                     Time
                    Time
                                                                      CDMA   EVXDO
            LTE, Rev-C, WiMAX                                         UMTS   HSDPA
                                                                      TD-SCDMA


    OFDM - scalable and most cost effective broadband solution
6                                  Nortel Confidential Information
MIMO Antenna Technology – The Most Cost
Effective Implementation in Multi-path Environment



                                                                              Dedicated Traffic
                                                                              Data
                                                                  rs
                                                             ie
                                                        rr
                                                      ca
                                                 b-
                                               Su
    Propagation
      channel
                                                                                                  frequency
                                                                       time



                                  OFDM is more naturally Integrated to MIMO
                  > MIMO creates multiple parallel channels between transmitter
                    and receiver
                  > MIMO is a family of techniques
                     • Use multiple channels to send the same information stream to
                       achieve diversity   improve coverage
                     • Use multiple channels to send multiple information streams
                       increase throughput
7                                  Nortel Confidential Information
Nortel Pioneering Collaborative MIMO
25Mbit/s UL in 5MHz - Prototype in September 2006

                   UE #1
                                                                         UL MIMO
                                                                         channel

                                                                                   Node-B


                           Time slot                     Frequency



                   UE #2




                       Time slot                        Frequency



         Nortel’s contribution accepted in 3GPP LTE



       MIMO-Like UL w/out multiple TX – reduce UE
      complexity, power consumption, size and cost
8                                      Nortel Confidential Information
   Listen & Solve NGMN Operator
   Requirements
NGMN = T-Mobile, Orange, Vodafone, KPN, NTT DoCoMo, Sprint, China Mobile > 700M subs.


                          NGMN Requirements                                                      Major Cost Items
                                                                                       > Antenna leases ($3k/year/antenna) / site
                                                                                         space leases
                               Seamless Mobility                                       > Feeder cable leases from Tower
                                     6                                                   companies (~$600/year/antenna)
              Reliability
                 Reliability         5             Low Latency
                                     4                                                 > Capex on antenna build-out (~$21k
  Total Cost of
    Total Cost of                                                                        antennas, cables, labor)
                                     3
   Ownership                                             Spectral Efficiency
     Ownership                       2
                                     1
                                     0                                                 > Utility cost associated with additional
          Simplicity
       Simplicity                                          E2E Throughput                power consumption

                                                                                       > Backhaul leases from Telcos (~$3k/year)
          Inter-working                                Quality of Service

             Integrated Network             Security                                   > Capex on cell-site equipment
                                                                                       > Capex on structural improvements for
                                                                                         new radio equipment



             Nortel focuses on the Total Cost of Ownership and
                      Simplicity with Reliability built in
   9                                                           Nortel Confidential Information
Leveraging Nortel’s Strong HSDPA Terminal
Partnership to Build an LTE Ecosystem

> Unique HSPA co-development activities with Qualcomm
     • Industry First HSDPA data calls at 3.6Mbps and 7.2Mbps
     • Industry First HSDPA 7.2Mbps at 850/900 Mhz
> Strong IOT program with major chipset and terminal
  suppliers




      TTM leadership through partnerships and early inter-working

10                            Nortel Confidential Information
LTE in a Nutshell


 > Advancing devices & value added




                                                                                                    n
                                                                   W




                                                                                                  io
                                                                       ire
   services in a converging market place




                                                                                                at
                                                                             le




                                                                                            lic
                                                                               ss
   are the drivers for LTE now




                                                                                         pp
                                                                                        A
 > OFDM-MIMO and IP-based technology
   deliver the cost structure with capacity                      Carrier                   Enterprise
   and performance




                                                                                    e
                                                                                 ur
 > Listen and Solve NGMN requirements                                                      W




                                                                              ct
                                                                                               ire




                                                                            ru
                                                                                                     -li
                                                                                                        ne




                                                                         st
 > Leverage a strong 3GPP ecosystem to




                                                                      fra
                                                                    In
   achieve time to market advantage



                  Be ahead of the pack with LTE
11                             Nortel Confidential Information
12   Nortel Confidential Information

								
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