Bootcamp - U_m & A_bis Signaling Analysis and
Radio Optimization

At the end of the Bootcamp you will:

• An increase in your job efficiency
• The ability to trouble shoot air interface problems
• Expertise of your trace equipment
• The ability to analyze Abis and Um measurements
• Expertise in the cause of various call drop scenarios
• The ability to distinguish DTX and non-DTX
• The ability to improve power control performance
• The ability to evaluate CCCH utilization for LA planning
• Expertise in the key parameter for radio optimization
• The ability to master drive-test problems in TEMS
• The ability to analyze K12xx Abis log-files

Key Topics

• Call Trace on Abis interface
• Meaning of System Information Broadcast
• Filtering call drops and other important events
• Root cause of Connection Failure and Error Indication
• 480msec SACCH Signaling
• Layer 1 information on Um and Abis
• RXQUAL and RXLEV in combination with DTX
• Handover signaling and failure
• Radio performance optimization of Power Control, HO and Call Setup
• Paging and Location Area planning

Who should attend:

• GSM Field Technicians and Engineers
• Radio Optimization personnel

Pre-Requisites:

This course requires participants to have a good knowledge of the GSM/GPRS network as well an electronic’s or computer background

Delivery:

• Notebooks with pre-installed protocol tracer
• Instructor led lecturing with real life trace analysis
• Practical hands-on exercises with solutions
  

Course Contents:

Subject

Practice

MS idle Mode behavior System Info Parameters and Periodicity The Cell Selection C1 Criteria Cell Reselection Behavior – C2 Insight TEMS Call Setup Analysis: RACH until ALERT Handover Functionality RXLEV &. RXQUAL Combined with DTX Power Control Functionality in UL and DL SACCH Info and Measurement Report Typical Failure Cases logged Radio Link Timeout Blocked Call Ping Pong Handover Bad Speech Quality Dragging Handover Intra Cell & Inter Cell Quality HO Problems Abis Messages and Reports Uplink and Downlink DTX with Power Control Drops: Connection Failure and Error Indication Details of Abis Measurement Report Call Setup Investigation and the Parameters behind Radio Performance Optimization Parameter Tuning for Improved Call Setup, Handover and Power Control Performance Location Area and Paging Capacity Planning

Cell Reselection Check System Info Reading TEMS Setup –Important Windows and Configs Examine Radio Resource, Call Control and Mobility Management Messages Layer 1 Information TA & MS Power Control Impact of DTX on Measurement Reporting Handover Parameter Settings and Their Impact Root Cause Determination: Ping Pong HO Dragging HO Drop Call Power Control Performance Evaluation Based on Abis Measurement Reports

Related Courses:

• Introduction to GSM
• Signal and Protocol Analysis in GSM (RAN and MS)
• Signal and Protocol Analysis in GSM (The Core Network)

Duration:

• 3 days

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