40200 «GSM Overview»

Course Code




The Global System for Mobile communication (GSM) is the world’s first  wireless technology providing global coverage. ”GSM Overview” course cover the basic GSM wireless concepts and GSM network architecture and componets. The protocols used in a GSM network are shortly described.

This course introduces the participant in the GSM technology


Learning objectives

On completion of this course the participants will be able to:

    • Understand mobile systems evolution and GSM development
    • Describe the GSM network architecture and nodes used in access and core network and their functionality
    • Know about the GSM frequency bands
    • Briefly present Protocols used in the GSM
    • Explain Time Division Multiple Access technique (TDMA)
    • List the transmission problems and their solutions
    • Understand the advantage with Adaptive Multi-Rate (AMR)
    • Explain what is VAMOS
    • List and identify GSM System mandatory concepts of air interface
    • Explain the concepts of physical channel and a logical channel
    • Explain the different burst types
    • Explain the framing structures and the mapping of logical channels to physical channels
    • Name the nodes in the Switching System and their functions
    • Know the Mobile Softswitch Solution
    • List the nodes involved in the security procedure in the GSM system
    • Outline the main functions of a BSC, TRC and BTS
    • Briefly Explain A-Interface and A-Interface over IP
    • Describe the Abis interface over IP and Abis Optimization solution
    • Explain the Iur-g interface
    • Shortly describe different mobile stations types
    • Know the information stored on the SIM-card
    • Explain the purpose of the different GSM ID-number (e.g. MSISDN, IMSI, TMSI, LAI etc.)
    • Understand how cells are selected and the reselection principle
    • Understand a call setup procedure
    • Understand the handover, locating and location updating concepts
    • Explain the basic concepts and difficulties of planning a cellular network
    • List the stages in the cell planning process
    • Explain the terms Grade of Service (GOS) and ‘Erlang’
    • Understand what is meant by the term ‘Hierarchical Cell Structure’
    • Describe the architecture of the Operations and Support System
    • Understand the concepts  teleservice, bearer service and supplementary service
    • Briefly describe mobile intelligent network implementation in GSM
    • Understand charging and accounting concepts.
    • Discriminate how data calls are initiated in the GSM network
    • Describe a GSM data traffic case
    • Describe the GPRS architecture and nodes
    • Describe a GPRS data traffic case
    • Explain the EDGE and EDGE Evolution
    • Describe the evolution of GSM to WCDMA systems
    • List the technologies that will bridge these two systems including HSCSD, EDGE, GPRS, WCDMA and HSPA and LTE
    • Explain the 3G system and feature Adaptive Traffic Control


Target audience

The target audience for this course is:

Service Planning, Design and Deployment Engineers, Network Design and Deployment Engineers, System and Service Technicians and Engineers, Field Technicians, System Administrators, Application Developers, Business Developers, Customer Care Administrators.



It is recommended that the participants are familiar to basic telecom concepts.


Duration and class size

The recommended length of the course is 4 days depending on the participants’ background. The maximum number of participants is 16. However it is easy to adapt the course length to the actual needs, thanks to the modular structure.

The course can always be customized and different items can be removed or new can be added upon the customer´s request.


Learning situation

This course is based on theoretical instructor-led lessons given in a classroom environment.