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ebu_mobile-broadband11_paulsen.ppt

VIEWS: 8 PAGES: 36

									                                                 CONTEST




                Mobile broadband network principles
                EBU workshop May 12th 2011


                Stein Erik Paulsen
                Radio Technology Manager
                Corporate Development
                Telenor
                stein-erik.paulsen@telenor.com
27. juli 2012
                              CONTENTS

                  Why use          How can
                   indoor         capacity be
                  antennas?       increased?
                                                How to avoid
                                                interference?
What about
the future?
                                                Why do we need
                                                   so much
                                                  spectrum?

                                                How to build
                                                 a mobile
                                                 network?

  27. juli 2012
Radio access network evolution
-The journey has just started




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The future contains frequent
 Techno-strategic decisions




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Ericsson:


                 In 3 years network
                traffic has increased
                 by a factor of 10…

                        …and revenue
                     increased by 35%...


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                 Example of
                establishing a
                 GSM radio
                   network




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                 The base stations
                (BTS) are distributed
                      to give
                RADIO COVERAGE

                  En




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                 The base stations
                (BTS) are distributed
                      to give
                RADIO COVERAGE
                  – and Capacity
                  En




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Increased traffic drives cost


                Network
                cost


                                                               Challenge!




    Start-up cost    Phase 1: Coverage   Phase 2: Capacity
                     limited network     limited network

                                                             Requested traffic
                     Smaller spectrum    Larger spectrum




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The challenge of mobile broadband



                     $
                              COST


                                     Revenue




                                 Traffic
With boosting data traffic there is a need for
more frequent network updates than before
             Network cost




                                                        LTE


                                                HSPA+



                                         HSPA

                            Basic   3G


                                                        = Resulting network cost




                                                                   Traffic load

 27. juli 2012
 Limited spectrum drives cost!
 Example: Two operators with very different spectrum size
                                      •Country 1: 8,8MHz band ->44 channels
                                           – =>132 Erlang per base station
                                           – => 40 base stations needed to handle total
                                             traffic of 5190 Erlang
     Area= 50km2
   Population= 1 M
                                      • Country 2: 4,4 MHz band -> 22 channels
  Subscribers= 346k
   15 mErl/sub (*)                         – =>29 Erlang per base station
 Tot. traffic= 5190 Erl                    – => 179 base stations needed to handle
                                             total traffic of 5190 Erlang



                                      => Having only half of the spectrum can
                                      mean 4,5 times the cost.

(*) Meaning that the average customer calls for 1,5% of the most busy hour of the day
    For illustration purpose only – the conclusions and calculations are simplified
    27. juli 2012
Getting more spectrum essential for
meeting future service demand

     Frequency spectrum for mobile communication


               Digital
              Dividend                                  3G
                                                    (UMTS2100)
 CDMA                                                              Mobile broadband
                    GSM900                     GSM1800              extension band


   500 MHz               1000 MHz   1500 MHz         2000 MHz    2500 MHz        3000 MHz




    27. juli 2012
3G in new frequency bands - refarming
                     (WCDMA = UMTS/HSPA = 3G)

(HSPA)




                                                   In-Building
                                                coverage area for
                                                 suburban terrain



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 (Source: Nokia Siemens Networks & Elisa)
 Access to low frequency spectrum:
 -High impact on mobile broadband


• Profitable coverage even outside
  the urban areas
• Potential for saving 50-70% of site
  costs
      Digital Dividend band: A desire and a curse:
      Too little of something good can be bad!


              800 MHz

               2600 MHz
                 11%




                 800 MHz:
Very attractive for coverage, but how to
avoid traffic congestion if 89% of all
users only have coverage from the 800
MHz system?

=> A fair amount of low-frequency
spectrum per operator is a prerequisite.
  Network capacity is hard to predict                   Total
                                                       Capacity
                                           10 Mbit/s


                                           7.5 Mbit/s


                                            5 Mbit/s


                                           2.5 Mbit/s

                                1 Mbit/s
                               10 Mbit/s
                          0.5 Mbit/s
                          5 Mbit/s

                  0.2 Mbit/s
                  2 Mbit/s


0.05 Mbit/s
0.5 Mbit/s




  27. juli 2012
Growing need for indoor coverage systems



 • Urban building walls block
   99% of the outdoor signal
 • Safe to re-use the same
   carriers indoors
 • Buildings with heavy data
   traffic: Use indoor antenna
   systems, WiFi or femtocells
 • Need fixed broadband lines
   to provide connection and
   offload mobile network
The future




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 -Is the path towards LTE evident?




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-or will we need proper guidance?




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   LTE is defined for all relevant frequency bands




               Digital
              Dividend                                     3G
                                                       (UMTS2100)
 CDMA                                                                    Mobile WiMAX/            Fixed
                     EDGE900                    EDGE1800           Mob. 3G extension band         WiMAX
                                                                  WiMAX

    500 MHz               1000 MHz   1500 MHz          2000 MHz            2500 MHz    3000 MHz    3500 MHz




                                                                     LTE
              LTE LTE                            LTE       LTE                   LTE              LTEAdv.
Low Frequency                                                                           High Frequency
Long range                                                                                   Short range



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Evolution in site capacity from GSM to LTE
                                                    - Downlink, sum of voice and data
                                 100                                                                                                              96

                                  90


                                  80
Total capacity per site (Mbps)




                                  70


                                  60


                                  50
                                                                                                                                         45

                                  40
                                                                                                         32
                                  30                                                      28

                                                                                                                         21
                                  20

                                                                           9
                                  10
                                                          4.5
                                            1
                                   0
                                       Plain GSM      GSM/EDGE        3G Rel.99       Turbo-3G        Turbo-3G        LTE 800        LTE 1800   LTE 2600
                                       Year 1995      Year 2010        (15MHz)         (HSPA)         (HSPA+)         (5 MHz)        (10 MHz)   (20 MHz)
                                       (10 MHz)        (10 MHz)                       (15MHz)         (15 MHz)

                                    Disclaimer: Values should be taken as indicative. Performance will vary greatly with deployed solution,
                                   surrounding environment, terminal penetration and size of frequency spectrum. HSPA assumes 14,4 Mbps
                                                    version. HSPA+ assumes 64QAM feature, not MIMO or Dual Carrier.
                                                                         Source: CONTEST, Telenor.
Competitive power
-Determined by spectrum




                      10
                     2600
                     MHz

     2600
     20
    800
    MHz
   Fakecom
                            LTE deployment strategy
                            must be tuned to our
                            relative ability to compete.
     To summmm up…




26
Key take-aways


•     Convergence: Usage and interactions between mobile and fixed
      networks will continue to grow to ensure optimum service
      offerings
•     Cost curves: Mobile technologies are much less suited for flat-
      rate subscriptions than fixed broadband technologies
•     Hybrid networks: Operators need to utilize more than one
      mobile technology to secure cost-effective deployments
•     Mobile Broadband: Mobile networks keep offering higher data
      rates but within limited coverage range, especially indoor
•     Indoor coverage: Indoor mobile broadband users represent
      majority of the traffic and should to a larger extent be connected
      via indoor antenna solutions.
•     New spectrum: Mobile Broadband at low frequencies is a cost-
      effective solution for areas with lower population density, as long
      as a healthy traffic balance is maintained.

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LTE:
Customers expect high performance
…and they expect coverage
Thank you for
your attention!
Backup slides




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Abbreviations
BSC         Base Station Controller                    IP           Internet Protocol
BSS         Base Station Subsystem                     ISDN         Integrated Services Digital Network
BTS         Base Transceiver Station                   ITU          International Telecommunication Union
CDMA        Code Division Multiple Access              IMT-2000     International Mobile Telecommunication
CSD         Circuit Switched Data                      MSC Mobile Switching Center
CN          Core Network                               PLMN         Public Land Mobile Network
D-AMPS      Digital-Advanced Mobile Phone System       PSK          Phase Shift Keying (Modulation)
EDGE        Enhanced Data rates for GSM Evolution      PSTN         Public Switched Telephone Network
E-GPRS      Enhanced - GPRS                            RNC Radio Network Controller
ERAN        EDGE Radio Access Network                  SCP          Service Control Point
ETSI European Telecommunications                       SGSN         Serving GPRS Support Node
            Standards Institute                        TDD          Time Division Duplex
FDD         Frequency Division Duplex                  TDMA         Time Division Multiple Access
FDD-DS      Frequency Division Duplex –                UMTS         Universal Mobile Telecommunications
            Direct Spread                                           System
FDD-MC      Frequency Division Duplex - MultiCarrier   UTRAN        UMTS Terestrial Radio Access Network
GGSN        Gateway GPRS Support Node                  VHE          Virtual Home Environment
GERAN       GSM EDGE Radio Access Network              VLR          Visitor Location Register
GMSK        Gaussian Minimum Shift Keying              VoIP Voice over Internet Protocol
            (Modulation)                               WAP Wireless Application Protocol
GPRS        General Packet Radio System                W-CDMA       Wideband -CDMA
GSM Global System for Mobile                           2G           2nd Generation (mobile network)
            communication                              (2,5G        GPRS)
HLR         Home Location Register                     3G           3rd Generation (mobile network)
HSCSD       High Speed Circuit Switched Data           3GPP         3rd Generation Partnership
IN          Intelligent Network                                     Project


      27. juli 2012
Sites, BTSs and cells…

•     A SITE is the physical location of which a base station is
      placed. Includes all equipment put up by the operator
      (mast, antennas,cabin, base station rack etc.)
•     A BTS is the base transceiver station, normally just
      called base station, i.e. the cabinet(s) containing the 1-3
      cells belonging to a site.
•     A NodeB is the term used for BTS in UMTS
•     A CELL is each uniquely identified GSM or UMTS capacity
      source in a BTS or NodeB, defined by its own coverage
      footprint (or coverage cell)
•     A TRX is a single transmitter/receiver unit able to provide
      one single GSM frequency to the cell’s coverage footprint.
      Each cell has 1-12 TRXs depending on the capacity need.




27. juli 2012
Typical user data rates


  LTE-
Advanced                                                             30 – 300 Mbit/s


   LTE
                                                     5 – 60 Mbit/s


   HSPA
                                    1.0 – 5 Mbit/s


  3G basic
               150-350 kbit/s


             100 kbps           1 Mbps                 10 Mbps            100 Mbps
Target for the network evolution:
All IP broadband network
                           Basic network interfaces
                             Fixed
                            network
                                                   Authentication

                                       Media       Subscriber
Core                                   Gateway     profiles       Charging      Service Platform
Network
                                                                Intelligent Network
                                                   Core
                                                                       Packet
                                                 Transport             Switch     Internet
                                       Base                           Gateway
                                       Station          Packet
                                       Control          Switch
                                                        Serving
Transport             Backhaul                           Node
Network



            Base station

Radio /                                                 network domain
Access
Network                                                         user domain




            Marie               Anne
           Cost distribution in mobile networks


                 Core & Backbone network                     Transport network             Radio Access network

                                                                                               BTS
                       MSC          BSC
  ISP internet
  connection                                                                                 BTS
                                                       Hub
                             Core
                                    Backbone network                                               Access network
                                                             m*E1              n*E1
                                                                                      E1       BTS
                     MGW
                                                                    Backhaul



CAPEX share for
greenfield voice                     30%                            20%                              50%
CAPEX share for
greenfield MBB                       10%                            45%                              45%

           27. juli 2012

								
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