GSM Training for Professionals

TOPICS Module-1Introduction of Communication and Wireless Concepts  History of Communication  Telecommunication Basics  Frequency, Range of Wireless Frequency  Channel Concept  Multiple Access Concepts and its types Module-2Cellular Generation Wireless Concepts  1st Generation of Cellular Communication (AMPS, TACS)  2 nd Generation of TDMA, GSM  3 rd Generation WCDMA  4 th Generation LTE Module-3 GSM Architecture  MS  BSS  NSS  Interfaces, Protocols

TOPICS Module-4GSM Channel Concepts  GSM Channels  Physical and Logical Channels Module-5Cell 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-8Call paths  Postpaid to Paid calls  Postpaid to Prepaid calls  Operator to Operator Calls  Mobile to PTCL calls Module-9Mobile Packet Backbone Network  OSI layer  IP Fundamentals  IP Routing, Protocols  MPLS Requirement in Telecom Module-10GSM Evolution Path  GSM Towards LTE  LTE Architecture  S-GWS, MME, eNode

Wireless Access Evolution  New Services  Efficiency  More Data Services required Broadband Subscribers Voice  Coverage  Mobility  Voice Quality  Portability  Capacity  Data Service  Broadband  Network Simplification  Cost of Ownership

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,..) BSC BTS MSC

Network Overview RAN department RF department NSS department Transmission department

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

BSC HLR MSC SMSC EIR PrePaid VMS Voic OMO PSTN Fixed Network SMSC

Short Code Services

Cell Planning (RF)

Two Key technologies are evolving to meet the Wireless Broadband Requirements n (smart antennas) Mesh extns. Local Area Fixed Wide Area Mobile Coverage/Mobility Metro Area Nomadic (Fixed LOS) a/d (Fixed NLOS) b/a/g Mobile Industry Fixed Wireless Industry 4G Air Interfaces Data Rates (kbps) 100,000 + GSM UMTS HSPA GPRSEDGE LTE 3GPP MOBILE BROADBAND DSL Experience Dial Up Higher Data Rate / Lower Cost per Bit e (Mobile WIMAX) Fibre Experience

Converge Networks

GSM Call Setup

MSMobile Station = phone + SIM card BTSBase Transceiver Station BSCBase Station Controller HLRHome Location Register MSCMobile services Switching Centre VLRVisitor Location Register AUCAuthentication Centre Stand-alone or integrated in HLR EIREquipment Identity Register For blacklisting stolen and unwanted equipment SMSCShort Message Service ”Support” Centre VMSVoice Messaging System PrePaid Node Hosting prepaid service system IN Intelligent Network services PSTNPublic Switched Telephone Network PABXPrivate Automatic Branch Exchange MSC/VLR Warid Telenore BSC SMSC EIR INTERNET Mobilink PSTN BSC PrePaid Node VMS HLR MSC w AUC

MSC SMSC EIR INTERNET PABX PSTN International PSTN Fixed Network BSC IN PrePaid VMS Voic HLR MSCBSC

MSC SMSC EIR INTERNET BSC IN PrePaid VMS Voic HLR MSCBSC PABX PSTN International PSTN Fixed Network

MSC SMSC EIR INTERNET BSC IN PrePaid VMS Voic HLR MSCBSC PABX PSTN International PSTN Fixed Network

MSC SMSC EIR INTERNET BSC IN PrePaid VMS Voic HLR MSCBSC PABX PSTN International PSTN Fixed Network

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

BSC HLR MSC SMSC EIR INTERNET IN PrePaid VMS Voic MSCBSC PABX PSTN International PSTN Fixed Network

BSC HLR MSC SMSC EIR INTERNET IN PrePaid VMS Voic MSCBSC PABX PSTN International PSTN Fixed Network

BSC HLR MSC SMSC EIR INTERNET IN PrePaid VMS Voic MSCBSC PABX PSTN International PSTN Fixed Network

Checks A number. Checks A number. To whom is A subscriber calling? (Checks B number) To whom is A subscriber calling? (Checks B number) Example : A subscriberhas prepaid number. Example : A subscriber has prepaid number. MSC Mobile Switching Centre

BSC HLR MSC SMSC EIR INTERNET IN PrePaid VMS Voic MSCBSC PABX PSTN International PSTN Fixed Network

BSC HLR MSC SMSC EIR INTERNET IN PrePaid VMS Voic MSCBSC PABX PSTN International PSTN Fixed Network

BSC HLR MSC SMSC EIR INTERNET IN PrePaid VMS Voic MSCBSC PABX PSTN International PSTN Fixed Network

Does the A subscriber have money left on his/her account? 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. When the call is established and on-going the subscriber’s account is decremented accordingly. PrePaid Node

BSC HLR MSC SMSC EIR INTERNET IN PrePaid VMS Voic MSCBSC PABX PSTN International PSTN Fixed Network

BSC HLR MSC SMSC EIR INTERNET IN PrePaid VMS Voic MSCBSC PABX PSTN International PSTN Fixed Network

BSC HLR MSC SMSC EIR INTERNET IN PrePaid VMS Voic MSCBSC PABX PSTN International PSTN Fixed Network

Where is the B subscriber? Where is the B subscriber? MSC interrogates in HLR. (HLR = Home Location Register) MSC interrogates in HLR. (HLR = Home Location Register) MSC Mobile Switching Centre Mobile Switching Centre

BSC HLR MSC IN PrePaid VMS Voic MSCBSC PABX PSTN International PSTN Fixed Network SMSC EIR INTERNET

BSC HLR MSC MSCBSC PABX PSTN International PSTN Fixed Network IN PrePaid VMS Voic SMSC EIR INTERNET

BSC HLR MSC MSCBSC PABX PSTN International PSTN Fixed Network IN PrePaid VMS Voic SMSC EIR INTERNET

HLR says ’I am the home of the B subscriber and I know where he/she is right now’ (i.e. which VLR) 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) Tells this VLR ’Give me a visitor address for this subscriber’ (Roaming Number) HLR Home Location Register

BSC HLR MSC MSCBSC PABX PSTN International PSTN Fixed Network IN PrePaid VMS Voic SMSC EIR INTERNET

BSC HLR MSC MSCBSC PABX PSTN International PSTN Fixed Network IN PrePaid VMS Voic SMSC EIR INTERNET

BSC HLR MSC MSCBSC PABX PSTN International PSTN Fixed Network IN PrePaid VMS Voic SMSC EIR INTERNET

BSC HLR MSC MSCBSC PABX PSTN International PSTN Fixed Network IN PrePaid VMS Voic SMSC EIR INTERNET

BSC HLR MSC MSC PABX PSTN International PSTN Fixed Network IN PrePaid VMS Voic SMSC EIR INTERNET

Hosting MSC/VLR returns TEMPORARILY assigned visitor/roaming address for B- subscriber to HLR. Hosting MSC/VLR returns TEMPORARILY assigned visitor/roaming address for B- subscriber to HLR. MSC Mobile Switching Centre

BSC HLR MSC MSCBSC PABX PSTN International PSTN Fixed Network IN PrePaid VMS Voic SMSC EIR INTERNET

BSC HLR MSC MSCBSC PABX PSTN International PSTN Fixed Network IN PrePaid VMS Voic SMSC EIR INTERNET

BSC HLR MSC MSCBSC PABX PSTN International PSTN Fixed Network IN PrePaid VMS Voic SMSC EIR INTERNET

BSC HLR MSC MSCBSC PABX PSTN International PSTN Fixed Network IN PrePaid VMS Voic SMSC EIR INTERNET

BSC HLR MSC MSCBSC PABX PSTN International PSTN Fixed Network IN PrePaid VMS Voic SMSC EIR INTERNET

’Thanks for the visitor address!’ ’Thanks for the visitor address!’ ’I will send this address to the MSC that requested for it.’ ’I will send this address to the MSC that requested for it.’ HLR Home Location Register

BSC HLR MSC MSCBSC PABX PSTN International PSTN Fixed Network IN PrePaid VMS Voic SMSC EIR INTERNET

BSC HLR MSC MSCBSC PABX PSTN International PSTN Fixed Network IN PrePaid VMS Voic SMSC EIR INTERNET

BSC HLR MSC MSCBSC PABX PSTN International PSTN Fixed Network IN PrePaid VMS Voic SMSC EIR INTERNET

’Thank you, HLR!’ ’Thank you, HLR!’ Speech connection path will set up now towards the MSC/VLR where the B subscriber is presently located. Speech connection path will set up now towards the MSC/VLR where the B subscriber is presently located. MSC Mobile Switching Centre

BSC HLR MSC MSCBSC PABX PSTN International PSTN Fixed Network IN PrePaid VMS Voic SMSC EIR INTERNET

BSC HLR MSC MSCBSC PABX PSTN International PSTN Fixed Network IN PrePaid VMS Voic SMSC EIR INTERNET

BSC HLR MSC MSCBSC PABX PSTN International PSTN Fixed Network IN PrePaid VMS Voic SMSC EIR INTERNET

Sets up a speech connection towards BSC. Sets up a speech connection towards BSC. Delivers B-subscriber ID to BSC and asks to page for the subscriber using that ID. Delivers B-subscriber ID to BSC and asks to page for the subscriber using that ID. MSC Mobile Switching Centre

BSC HLR MSC MSCBSC PABX PSTN International PSTN Fixed Network IN PrePaid VMS Voic SMSC EIR INTERNET

BSC HLR MSC MSCBSC PABX PSTN International PSTN Fixed Network IN PrePaid VMS Voic SMSC EIR INTERNET

BSC HLR MSC MSCBSC PABX PSTN International PSTN Fixed Network IN PrePaid VMS Voic SMSC EIR INTERNET

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

BSC HLR MSC MSCBSC PABX PSTN International PSTN Fixed Network IN PrePaid VMS Voic SMSC EIR INTERNET

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