GSM Air Interface

Course Detail
  • Duration: 2 Days
  • Price: €1575* Plus Applicable Taxes
  • In-house option only, contact us for details

Programme

Section 1 - An introduction to Radio Channels and the GSM Radio Spectrum

  • The Electromagnetic Wave
  • Radio Spectrum
  • The GSM radio Spectrum 900/1800 MHz
  • Propagation
  • Cellular principles
  • C/I ratio
  • Traffic and Grade of Service
  • Path Loss and Cell Planning Tools

Section 2 - The Physical Channels and Logical Channels

  • Time Division Multiple Access
  • Physical channel
  • Structure of Air Bursts
  • Logical Traffic channels - 26 frame multiframe
  • Logical Signaling channels - 51 frame multiframe
  • Typical cell configuration example

Section 3 - GSM Idle Mode Procedures

  • General Mobile Power Up Procedure
  • Initial Cell Selection C1
  • Monitoring of Channels BCCH, PCH
  • Cell Reselection C2
  • Location Updating Events
  • DRx

Section 4 - GSM Dedicated Mode Procedures

  • Neighbour Cell Measurements
  • Measurement Reporting
  • Dynamic Power Control
  • Timing Advance Mechanism
  • Handovers

Section 5 - Introduction to the GSM Protocol Stack

  • The OSI 7 Layer Model
  • The GSM Protocol Stack
  • The Physical Layer
  • Data Link Layer 2 (LAPDm)
  • The Network Layer 3 (CC, MM, RR)

Section 6 - GSM Layer 2 (LAPDm)

  • Typical Layer 2 Functions and Procedures
  • LAPDm Frame Formats and Fields
  • Setting up a Datalink
  • Numbered Information Frame Exchange
  • Terminating a Datalink

Section 7 - GSM Layer 3

  • RR Procedures and Messages
    • Assignment to Channel
    • Channel Modification
    • Channel Release
  • MM Procedures and Messages
    • Service Request
    • Identification and Authentication
    • Location Updating
  • CC Procedures and Messages
    • Mobile Originating Call
    • Mobile Terminating Call
    • SS Service Modification
  • SMS Procedures and Messages
    • SMS Protocol Stack
    • Mobile Originating SMS
    • Mobile Terminating SMS

Section 8 - Layer 3 Example Signaling Sequences

  • Mobile Originating Call, Successful / Abnormal
  • Mobile Terminating Call, Successful / Abnormal
  • Location Update
  • Handovers
  • SMS Delivery to Idle Mobile
  • SMS Delivery to Dedicated Mode Mobile

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