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GSM Architecture Overview

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GSM Architecture Overview Powered By Docstoc
					GSM Training for
Professionals
TOPICS
   Module-1    Introduction of Communication and Wireless Concepts

              History of Communication
              Telecommunication Basics
              Frequency, Range of Wireless Frequency
              Channel Concept
              Multiple Access Concepts and its types


   Module-2    Cellular Generation Wireless Concepts

              1st Generation of Cellular Communication (AMPS, TACS)
              2nd Generation of TDMA , GSM
              3rd Generation WCDMA
              4th Generation LTE

   Module-3 GSM Architecture

              MS
              BSS
              NSS
              Interfaces, Protocols
TOPICS
   Module-4         GSM Channel Concepts

                  GSM Channels
                  Physical and Logical Channels

   Module-5         Cell Planning Concepts

                  Cell Planning Basic
                  Cell Planning Tools , TEMPS

   Module-6         NSS/BSS Hardware and Software

                  MSC
                  HLR
                  STP
                  BSC

   Module-7         DATA Calls

                  HSCSD
                  GPRS
                  Data Call Path,
                  SGSN and GGSN Hardware
TOPICS
   Module-8          Call paths

                   Postpaid to Paid calls
                   Postpaid to Prepaid calls
                   Operator to Operator Calls
                   Mobile to PTCL calls

   Module-9          Mobile Packet Backbone Network

                   OSI layer
                   IP Fundamentals
                   IP Routing , Protocols
                   MPLS Requirement in Telecom


   Module-10         GSM Evolution Path

                   GSM Towards LTE
                   LTE Architecture
                   S-GWS, MME, eNode
  Wireless Access Evolution


Subscribers


                                                                      Broadband
                                                                      Network
                                                                       Simplification
                                                     New Services    Cost of
                                                                       Ownership
                                                     Efficiency
                                   Voice Quality    More Data
                                   Portability       Services
          Coverage                Capacity          required

          Mobility                Data Service

 Voice                Broadband
Secrete of Upgrade
   Maximize

                  Utilization Spectrum Efficiency FDMA/TDMA/CDMA/OFDMA
                  Power Efficiency----------------Battery


   Minimize

                  Complexity------- System should be Simple,
                  Cost--------- It should be minimize , as per customer needs
GSM Architecture Overview
   Main components of GSM

       The mobile station (MS)
       BSS Base Station Subsystem (BTS+BSC)
       MSS Mobile Station Subsystem (MSC/HLR, ..)




    BTS                   BSC               MSC
Network Overview
                                                   MS     (Mobile Station)
                                       MS

                                                         RF department
                                             BTS
                                                   BSS (Base Station System)
                                      BSC                   RAN department
                                                         Transmission department
  PSTN, ISDN...
                           MSC

                                                   NSS     (Network Switching
Voicemail Server
                                                               Subsystem)
    SM-SC          VLR         HLR AuC      EIR
                                                          NSS department
                   OMC          OMC
                                                   OMM(Operations & Maintenance
                         NMC           GSM interfaces
                                        X.25 links          Management)
Services offered

  Voice Services
  Data Services (GPRS/MMS)

  Short Code Services
GSM Voice Network

     Only Voice Call
GSM Voice and Data Call Architecture


           Voice Calls Path




          Data Calls Path

        Packet Data14.4 Kp/s
GSM Prepaid Services
SMSC
                              BSC          HLR


 VMS                                EIR
 Voicemail


PrePaid                  MSC        SMSC




             PSTN       OMO
        Fixed Network
Short Code Services
Cell Planning (RF)
                        Two Key technologies are evolving to meet the Wireless
                                     Broadband Requirements


                                                                                                                    4G Air Interfaces
                    Wide Area
                     Mobile




                                                                                          MOBILE
                                                                                        BROADBAND

                                 GSM       GPRS   EDGE    UMTS     HSPA           LTE             3GPP
Coverage/Mobility




                                                                                                      802.16e
                                                                                                   (Mobile WIMAX)
                    Metro Area
                     Nomadic




                                              Mobile Industry



                                                                                                           802.16a/d
                                                                                                         (Fixed NLOS)

                                                                                                                        802.11n
                                                                        Fixed Wireless Industry                         (smart antennas)
                                                                                                                        802.11
                    Local Area




                                                                                                     802.16             Mesh extns.
                      Fixed




                                                                                                  (Fixed LOS)
                                 Dial Up               DSL Experience         Fibre Experience
                                                                                                                         802.11b/a/g
                                                           Data Rates (kbps)
                                                                                                                           100,000 +
                                           Higher Data Rate / Lower Cost per Bit
Converge Networks
GSM Call Setup
              AUC


    HLR                                         MS     Mobile Station = phone + SIM card
              BSC                               BTS    Base Transceiver Station
                                                BSC    Base Station Controller
                                                HLR    Home Location Register
                                                MSC    Mobile services Switching Centre
                                                VLR    Visitor Location Register
                                                AUC    Authentication Centre
  VMS                             EIR                   Stand-alone or integrated in HLR
                                                EIR    Equipment Identity Register
                                                        For blacklisting stolen and unwanted
                                                        equipment
 PrePaid      MSC/VLR            SMSC
                                                SMSC   Short Message Service ”Support”
  Node                                           Centre
               Warid                            VMS     Voice Messaging System
                                                PrePaid Node Hosting prepaid service system
                                                IN      Intelligent Network services
                                INTERNET
Telenore                                        PSTN Public Switched Telephone Network
                                                PABX Private Automatic Branch Exchange




                               MSC
           PSTN     Mobilink    w
                                           BSC
                              BSC                   HLR


 VMS                                    EIR
 Voicemail


PrePaid                    MSC          SMSC

   IN                                   INTERNET




                                        MSC        BSC
             PSTN        PSTN PABX
        Fixed Network   International
                              BSC                   HLR


 VMS                                    EIR
 Voicemail


PrePaid                    MSC          SMSC

   IN                                   INTERNET




                                        MSC        BSC
             PSTN        PSTN PABX
        Fixed Network   International
                              BSC                   HLR


 VMS                                    EIR
 Voicemail


PrePaid                    MSC          SMSC

   IN                                   INTERNET




                                        MSC        BSC
             PSTN        PSTN PABX
        Fixed Network   International
                              BSC                   HLR


 VMS                                    EIR
 Voicemail


PrePaid                    MSC          SMSC

   IN                                   INTERNET




                                        MSC        BSC
             PSTN        PSTN PABX
        Fixed Network   International
        BSC
Base Station Controller


      The call request reaches the BSC from the BTS and
       is forwarded to MSC.
      After call is established, the BSC will perform
       decoding of the call (in typical config.)
                              BSC                   HLR


 VMS                                    EIR
 Voicemail


PrePaid                    MSC          SMSC

   IN                                   INTERNET




                                        MSC        BSC
             PSTN        PSTN PABX
        Fixed Network   International
                              BSC                   HLR


 VMS                                    EIR
 Voicemail


PrePaid                    MSC          SMSC

   IN                                   INTERNET




                                        MSC        BSC
             PSTN        PSTN PABX
        Fixed Network   International
                              BSC                   HLR


 VMS                                    EIR
 Voicemail


PrePaid                    MSC          SMSC

   IN                                   INTERNET




                                        MSC        BSC
             PSTN        PSTN PABX
        Fixed Network   International
            Checks A number.
            To whom is A subscriber calling?
             (Checks B number)
            Example : A subscriber has prepaid
             number.


     MSC
Mobile Switching Centre
                              BSC                   HLR


 VMS                                    EIR
 Voicemail


PrePaid                    MSC          SMSC

   IN                                   INTERNET




                                        MSC        BSC
             PSTN        PSTN PABX
        Fixed Network   International
                              BSC                   HLR


 VMS                                    EIR
 Voicemail


PrePaid                    MSC          SMSC

   IN                                   INTERNET




                                        MSC        BSC
             PSTN        PSTN PABX
        Fixed Network   International
                              BSC                   HLR


 VMS                                    EIR
 Voicemail


PrePaid                    MSC          SMSC

   IN                                   INTERNET




                                        MSC        BSC
             PSTN        PSTN PABX
        Fixed Network   International
   Does the A subscriber have
    money left on his/her account?
   When the call is established and
    on-going the subscriber’s
    account is decremented
    accordingly.




                              PrePaid Node
                                                   HLR
                              BSC


 VMS                                    EIR
 Voicemail


PrePaid                    MSC          SMSC

   IN                                   INTERNET




                                        MSC        BSC
             PSTN        PSTN PABX
        Fixed Network   International
                                                   HLR
                              BSC


 VMS                                    EIR
 Voicemail


PrePaid                    MSC          SMSC

   IN                                   INTERNET




                                        MSC        BSC
             PSTN        PSTN PABX
        Fixed Network   International
                                                   HLR
                              BSC


 VMS                                    EIR
 Voicemail


PrePaid                   MSC           SMSC

   IN                                   INTERNET




                                        MSC        BSC
             PSTN        PSTN PABX
        Fixed Network   International
           Where is the B subscriber?
           MSC interrogates in HLR.
            (HLR = Home Location Register)




     MSC
Mobile Switching Centre
                                                   HLR
                              BSC


 VMS                                    EIR
 Voicemail


PrePaid                   MSC           SMSC

   IN                                   INTERNET




                                        MSC        BSC
             PSTN        PSTN PABX
        Fixed Network   International
                                                   HLR
                              BSC


 VMS                                    EIR
 Voicemail


PrePaid                   MSC           SMSC

   IN                                   INTERNET




                                        MSC        BSC
             PSTN        PSTN PABX
        Fixed Network   International
                                                   HLR
                              BSC


 VMS                                    EIR
 Voicemail


PrePaid                   MSC           SMSC

   IN                                   INTERNET




                                        MSC        BSC
             PSTN        PSTN PABX
        Fixed Network   International
   HLR says ’I am the home of the B
    subscriber and I know where he/she is
    right now’ (i.e. which VLR)
   Tells this VLR ’Give me a visitor address
    for this subscriber’ (Roaming Number)




     HLR
Home Location Register
                                                   HLR
                              BSC


 VMS                                    EIR
 Voicemail


PrePaid                   MSC           SMSC

   IN                                   INTERNET




                                        MSC        BSC
             PSTN        PSTN PABX
        Fixed Network   International
                                                   HLR
                              BSC


 VMS                                    EIR
 Voicemail


PrePaid                   MSC           SMSC

   IN                                   INTERNET




                                        MSC        BSC
             PSTN        PSTN PABX
        Fixed Network   International
                                                   HLR
                              BSC


 VMS                                    EIR
 Voicemail


PrePaid                   MSC           SMSC

   IN                                   INTERNET




                                        MSC        BSC
             PSTN        PSTN PABX
        Fixed Network   International
                                                   HLR
                              BSC


 VMS                                    EIR
 Voicemail


PrePaid                   MSC           SMSC

   IN                                   INTERNET




                                        MSC        BSC
             PSTN        PSTN PABX
        Fixed Network   International
                                                   HLR
                              BSC


 VMS                                    EIR
 Voicemail


PrePaid                   MSC           SMSC

   IN                                   INTERNET




                                        MSC        BSC
             PSTN        PSTN PABX
        Fixed Network   International
   Hosting MSC/VLR returns TEMPORARILY
    assigned visitor/roaming address for B-
    subscriber to HLR.




       MSC
Mobile Switching Centre
                                                   HLR
                              BSC


 VMS                                    EIR
 Voicemail


PrePaid                   MSC           SMSC

   IN                                   INTERNET




                                        MSC        BSC
             PSTN        PSTN PABX
        Fixed Network   International
                                                   HLR
                              BSC


 VMS                                    EIR
 Voicemail


PrePaid                   MSC           SMSC

   IN                                   INTERNET




                                        MSC        BSC
             PSTN        PSTN PABX
        Fixed Network   International
                                                   HLR
                              BSC


 VMS                                    EIR
 Voicemail


PrePaid                   MSC           SMSC

   IN                                   INTERNET




                                        MSC        BSC
             PSTN        PSTN PABX
        Fixed Network   International
                                                   HLR
                              BSC


 VMS                                    EIR
 Voicemail


PrePaid                   MSC           SMSC

   IN                                   INTERNET




                                        MSC        BSC
             PSTN        PSTN PABX
        Fixed Network   International
                                                   HLR
                              BSC


 VMS                                    EIR
 Voicemail


PrePaid                   MSC           SMSC

   IN                                   INTERNET




                                        MSC        BSC
             PSTN        PSTN PABX
        Fixed Network   International
   ’Thanks for the visitor address!’
   ’I will send this address to the MSC
    that requested for it.’




            HLR
       Home Location Register
                                                   HLR
                              BSC


 VMS                                    EIR
 Voicemail


PrePaid                   MSC           SMSC

   IN                                   INTERNET




                                        MSC        BSC
             PSTN        PSTN PABX
        Fixed Network   International
                                                   HLR
                              BSC


 VMS                                    EIR
 Voicemail


PrePaid                   MSC           SMSC

   IN                                   INTERNET




                                        MSC        BSC
             PSTN        PSTN PABX
        Fixed Network   International
                                                   HLR
                              BSC


 VMS                                    EIR
 Voicemail


PrePaid                   MSC           SMSC

   IN                                   INTERNET




                                        MSC        BSC
             PSTN        PSTN PABX
        Fixed Network   International
   ’Thank you, HLR!’
   Speech connection path will set up
    now towards the MSC/VLR where the
    B subscriber is presently located.




      MSC
Mobile Switching Centre
                                                   HLR
                              BSC


 VMS                                    EIR
 Voicemail


PrePaid                   MSC           SMSC

   IN                                   INTERNET




                                        MSC        BSC
             PSTN        PSTN PABX
        Fixed Network   International
                                                   HLR
                              BSC


 VMS                                    EIR
 Voicemail


PrePaid                   MSC           SMSC

   IN                                   INTERNET




                                        MSC        BSC
             PSTN        PSTN PABX
        Fixed Network   International
                                                   HLR
                              BSC


 VMS                                    EIR
 Voicemail


PrePaid                   MSC           SMSC

   IN                                   INTERNET




                                        MSC        BSC
             PSTN        PSTN PABX
        Fixed Network   International
   Sets up a speech connection towards BSC.
   Delivers B-subscriber ID to BSC and asks
    to page for the subscriber using that ID.




        MSC
Mobile Switching Centre
                                                   HLR
                              BSC


 VMS                                    EIR
 Voicemail


PrePaid                   MSC           SMSC

   IN                                   INTERNET




                                        MSC        BSC
             PSTN        PSTN PABX
        Fixed Network   International
                                                   HLR
                              BSC


 VMS                                    EIR
 Voicemail


PrePaid                   MSC           SMSC

   IN                                   INTERNET




                                        MSC        BSC
             PSTN        PSTN PABX
        Fixed Network   International
                                                   HLR
                              BSC


 VMS                                    EIR
 Voicemail


PrePaid                   MSC           SMSC

   IN                                   INTERNET




                                        MSC        BSC
             PSTN        PSTN PABX
        Fixed Network   International
    BSC now sends a PAGING MESSAGE to all the BTSs
     that it covers/controls.
    Carrys PAGING RESPONSE from called MS back to
     MSC.
    Allocates a RADIO channel through a BTS with best
     available and allowable SIGNAL STRENGTH for
     called MS.
    Performs SPEECH CODING when call is established.



           BSC
    Base Station Controller
                                                   HLR
                              BSC


 VMS                                    EIR
 Voicemail


PrePaid                   MSC           SMSC

   IN                                   INTERNET




                                        MSC        BSC
             PSTN        PSTN PABX
        Fixed Network   International
Thank You

				
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posted:7/22/2012
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