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GSM Training for Professionals

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Presentation on theme: "GSM Training for Professionals"— Presentation transcript:

1 GSM Training for Professionals

2 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

3 TOPICS Module-4 GSM Channel Concepts Module-5 Cell Planning 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

4 TOPICS Module-8 Call paths Module-9 Mobile Packet Backbone Network
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

5 Wireless Access Evolution
Subscribers Broadband Network Simplification Cost of Ownership New Services Efficiency More Data Services required Voice Quality Portability Capacity Data Service Coverage Mobility 2G 4G Voice 1G 3G Broadband

6 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

7 GSM Architecture Overview
Main components of GSM The mobile station (MS) BSS Base Station Subsystem (BTS+BSC) MSS Mobile Station Subsystem (MSC/HLR, ..) MSC BTS BSC

8 (Operations & Maintenance
Network Overview                                    BTS BSC MSC VLR HLR AuC EIR PSTN, ISDN... OMC NMC X.25 links GSM interfaces Voic Server SM-SC MS (Mobile Station) BSS (Base Station System) NSS (Network Switching Subsystem) OMM (Operations & Maintenance Management) RF department RAN department Transmission department NSS department

9 Services offered Voice Services Data Services (GPRS/MMS)
Short Code Services

10 GSM Voice Network Only Voice Call BSC BTS MSC PSTN BSC BTS OMO
A subscriber BSC BTS Only Voice Call MSC PSTN BSC BTS B subscriber OMO

11 GSM Voice and Data Call Architecture
Voice Calls Path Data Calls Path Packet Data14.4 Kp/s

12 GSM Prepaid Services BSC BTS MSC PSTN BSC BTS OMO Prepaid A subscriber
B subscriber OMO

13 SMSC HLR BSC VMS Voicemail MSC EIR PrePaid SMSC PSTN Fixed Network OMO
A subscriber BSC BTS BTS B subscriber VMS Voic MSC EIR PrePaid SMSC PSTN Fixed Network OMO

14 Short Code Services BSC BTS MSC PSTN BSC BTS OMO Prepaid A subscriber
Servers / S-Code MSC PSTN BSC BTS Prepaid B subscriber OMO

15 Cell Planning (RF)

16 Fixed Wireless Industry
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 802.16e (Mobile WIMAX) Mobile Industry Coverage/Mobility Metro Area Nomadic 802.16a/d (Fixed NLOS) Fixed Wireless Industry 802.11n (smart antennas) 802.11 Mesh extns. 802.16 (Fixed LOS) Dial Up DSL Experience Fibre Experience Local Area Fixed Data Rates (kbps) 802.11b/a/g 100,000 + Higher Data Rate / Lower Cost per Bit

17 Converge Networks

18

19 GSM Call Setup What happens NEXT? GSM Network 'B' subscriber
ANSWERS 'A' subscriber CALLS What happens NEXT?

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

21 HLR BSC VMS Voicemail MSC EIR PrePaid SMSC IN MSC BSC
A subscriber BSC BTS VMS Voic MSC EIR PrePaid SMSC IN INTERNET MSC BSC PSTN Fixed Network PSTN International PABX B subscriber BTS

22 HLR BSC VMS Voicemail MSC EIR PrePaid SMSC IN MSC BSC
A subscriber BSC BTS VMS Voic MSC EIR PrePaid SMSC IN INTERNET MSC BSC PSTN Fixed Network PSTN International PABX B subscriber BTS

23 HLR BSC VMS Voicemail MSC EIR PrePaid SMSC IN MSC BSC
A subscriber BSC BTS VMS Voic MSC EIR PrePaid SMSC IN INTERNET MSC BSC PSTN Fixed Network PSTN International PABX B subscriber BTS

24 HLR BSC VMS Voicemail MSC EIR PrePaid SMSC IN MSC BSC
A subscriber BSC BTS VMS Voic MSC EIR PrePaid SMSC IN INTERNET MSC BSC PSTN Fixed Network PSTN International PABX B subscriber BTS

25 BSC Base Station Controller
A subscriber BTS = Base Transceiver Station 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.)

26 HLR BSC VMS MSC EIR PrePaid SMSC IN MSC BSC PSTN Fixed Network
A subscriber BSC BTS VMS Voic MSC EIR PrePaid SMSC IN INTERNET MSC BSC PSTN Fixed Network PSTN International PABX B subscriber BTS

27 HLR BSC VMS Voicemail MSC EIR PrePaid SMSC IN MSC BSC
A subscriber BSC BTS VMS Voic MSC EIR PrePaid SMSC IN INTERNET MSC BSC PSTN Fixed Network PSTN International PABX B subscriber BTS

28 HLR BSC VMS Voicemail MSC EIR PrePaid SMSC IN MSC BSC
A subscriber BSC BTS VMS Voic MSC EIR PrePaid SMSC IN INTERNET MSC BSC PSTN Fixed Network PSTN International PABX B subscriber BTS

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

30 HLR BSC VMS Voicemail MSC EIR PrePaid SMSC IN MSC BSC
A subscriber BSC BTS VMS Voic MSC EIR PrePaid SMSC IN INTERNET MSC BSC PSTN Fixed Network PSTN International PABX B subscriber BTS

31 HLR BSC VMS Voicemail MSC EIR PrePaid SMSC IN MSC BSC
A subscriber BSC BTS VMS Voic MSC EIR PrePaid SMSC IN INTERNET MSC BSC PSTN Fixed Network PSTN International PABX B subscriber BTS

32 HLR BSC VMS Voicemail MSC EIR PrePaid SMSC IN MSC BSC
A subscriber BSC BTS VMS Voic MSC EIR PrePaid SMSC IN INTERNET MSC BSC PSTN Fixed Network PSTN International PABX B subscriber BTS

33 PrePaid Node 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

34 HLR BSC VMS Voicemail MSC EIR PrePaid SMSC IN MSC BSC
A subscriber BSC BTS VMS Voic MSC EIR PrePaid SMSC IN INTERNET MSC BSC PSTN Fixed Network PSTN International PABX B subscriber BTS

35 HLR BSC VMS Voicemail MSC EIR PrePaid SMSC IN MSC BSC
A subscriber BSC BTS VMS Voic MSC EIR PrePaid SMSC IN INTERNET MSC BSC PSTN Fixed Network PSTN International PABX B subscriber BTS

36 MSC HLR BSC VMS Voicemail EIR PrePaid SMSC IN MSC BSC
A subscriber BSC BTS VMS Voic MSC EIR PrePaid SMSC IN INTERNET MSC BSC PSTN Fixed Network PSTN International PABX B subscriber BTS

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

38 MSC HLR BSC VMS Voicemail EIR PrePaid SMSC IN MSC BSC
A subscriber BSC BTS VMS Voic MSC EIR PrePaid SMSC IN INTERNET MSC BSC PSTN Fixed Network PSTN International PABX B subscriber BTS

39 MSC HLR BSC VMS Voicemail EIR PrePaid SMSC IN MSC BSC
A subscriber BSC BTS VMS Voic MSC EIR PrePaid SMSC IN INTERNET MSC BSC PSTN Fixed Network PSTN International PABX B subscriber BTS

40 HLR MSC BSC VMS Voicemail EIR PrePaid SMSC IN MSC BSC
A subscriber BSC BTS VMS Voic MSC EIR PrePaid SMSC IN INTERNET MSC BSC PSTN Fixed Network PSTN International PABX B subscriber BTS

41 Home Location Register
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

42 HLR MSC BSC VMS Voicemail EIR PrePaid SMSC IN MSC BSC
A subscriber BSC BTS VMS Voic MSC EIR PrePaid SMSC IN INTERNET MSC BSC PSTN Fixed Network PSTN International PABX B subscriber BTS

43 HLR MSC BSC VMS Voicemail EIR PrePaid SMSC IN MSC BSC
A subscriber BSC BTS VMS Voic MSC EIR PrePaid SMSC IN INTERNET MSC BSC PSTN Fixed Network PSTN International PABX B subscriber BTS

44 HLR MSC BSC VMS Voicemail EIR PrePaid SMSC IN MSC BSC
A subscriber BSC BTS VMS Voic MSC EIR PrePaid SMSC IN INTERNET MSC BSC PSTN Fixed Network PSTN International PABX B subscriber BTS

45 HLR MSC BSC VMS Voicemail EIR PrePaid SMSC IN MSC BSC
A subscriber BSC BTS VMS Voic MSC EIR PrePaid SMSC IN INTERNET MSC BSC PSTN Fixed Network PSTN International PABX B subscriber BTS

46 HLR MSC BSC VMS Voicemail EIR PrePaid SMSC IN MSC BSC
A subscriber BSC BTS VMS Voic MSC EIR PrePaid SMSC IN INTERNET MSC BSC PSTN Fixed Network PSTN International PABX B subscriber BTS

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

48 HLR MSC BSC VMS Voicemail EIR PrePaid SMSC IN MSC BSC
A subscriber BSC BTS VMS Voic MSC EIR PrePaid SMSC IN INTERNET MSC BSC PSTN Fixed Network PSTN International PABX B subscriber BTS

49 HLR MSC BSC VMS Voicemail EIR PrePaid SMSC IN MSC BSC
A subscriber BSC BTS VMS Voic MSC EIR PrePaid SMSC IN INTERNET MSC BSC PSTN Fixed Network PSTN International PABX B subscriber BTS

50 HLR MSC BSC VMS Voicemail EIR PrePaid SMSC IN MSC BSC
A subscriber BSC BTS VMS Voic MSC EIR PrePaid SMSC IN INTERNET MSC BSC PSTN Fixed Network PSTN International PABX B subscriber BTS

51 HLR MSC BSC VMS Voicemail EIR PrePaid SMSC IN MSC BSC
A subscriber BSC BTS VMS Voic MSC EIR PrePaid SMSC IN INTERNET MSC BSC PSTN Fixed Network PSTN International PABX B subscriber BTS

52 HLR MSC BSC VMS Voicemail EIR PrePaid SMSC IN MSC BSC
A subscriber BSC BTS VMS Voic MSC EIR PrePaid SMSC IN INTERNET MSC BSC PSTN Fixed Network PSTN International PABX B subscriber BTS

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

54 HLR MSC BSC VMS Voicemail EIR PrePaid SMSC IN MSC BSC
A subscriber BSC BTS VMS Voic MSC EIR PrePaid SMSC IN INTERNET MSC BSC PSTN Fixed Network PSTN International PABX B subscriber BTS

55 HLR MSC BSC VMS Voicemail EIR PrePaid SMSC IN MSC BSC
A subscriber BSC BTS VMS Voic MSC EIR PrePaid SMSC IN INTERNET MSC BSC PSTN Fixed Network PSTN International PABX B subscriber BTS

56 HLR MSC BSC VMS Voicemail EIR PrePaid SMSC IN MSC BSC
A subscriber BSC BTS VMS Voic EIR PrePaid SMSC IN INTERNET MSC BSC PSTN Fixed Network PSTN International PABX B subscriber BTS

57 Mobile Switching Centre
’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

58 HLR MSC BSC VMS Voicemail EIR PrePaid SMSC IN MSC BSC
A subscriber BSC BTS VMS Voic MSC EIR PrePaid SMSC IN INTERNET MSC BSC PSTN Fixed Network PSTN International PABX B subscriber BTS

59 HLR MSC BSC VMS Voicemail EIR PrePaid SMSC IN MSC BSC
A subscriber BSC BTS VMS Voic MSC EIR PrePaid SMSC IN INTERNET MSC BSC PSTN Fixed Network PSTN International PABX B subscriber BTS

60 HLR MSC BSC VMS Voicemail EIR PrePaid SMSC IN MSC BSC
A subscriber BSC BTS VMS Voic MSC EIR PrePaid SMSC IN INTERNET MSC BSC PSTN Fixed Network PSTN International PABX B subscriber BTS

61 Mobile Switching Centre
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

62 HLR MSC BSC VMS Voicemail EIR PrePaid SMSC IN MSC BSC
A subscriber BSC BTS VMS Voic MSC EIR PrePaid SMSC IN INTERNET MSC BSC PSTN Fixed Network PSTN International PABX B subscriber BTS

63 HLR MSC BSC VMS Voicemail EIR PrePaid SMSC IN MSC BSC
A subscriber BSC BTS VMS Voic MSC EIR PrePaid SMSC IN INTERNET MSC BSC PSTN Fixed Network PSTN International PABX B subscriber BTS

64 HLR MSC BSC VMS Voicemail EIR PrePaid SMSC IN MSC BSC
A subscriber BSC BTS VMS Voic MSC EIR PrePaid SMSC IN INTERNET MSC BSC PSTN Fixed Network PSTN International PABX B subscriber BTS

65 Base Station Controller
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

66 HLR MSC BSC VMS Voicemail EIR PrePaid SMSC IN MSC BSC
A subscriber BSC BTS VMS Voic MSC EIR PrePaid SMSC IN INTERNET MSC BSC PSTN Fixed Network PSTN International PABX B subscriber BTS

67 Thank You

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