TOP 10 3G RAN Optimisation Actions

[rfoptman]

This document can be used as network pre-launch optimisation checklistThe aim of this document is to summarize how to:

• Investigate the reasons for poor 3G radio performance (call set-up failure, call drop),
• Describe the potential reasons
• Propose actions to improve performance (as top 10 optimisation actions)
  
  • Both common and service specific (CS AMR, CS Video and PS)
  
  

This document can be used as network pre-launch optimisation checklist.
1. Introduction................................................................................................................ 4
2. Network planning rules for optimum performan................................................................... 4
3. Network health check................................................................................................... 5
3.1 BTS Alarms causing Blocked cells.................................................................................. 5
3.1.1 Fault in O&M and DSP SW interface............................................................................ 5
3.1.2 ATM overflow......................................................................................................... 5
3.1.3 DSC-bus failure....................................................................................................... 6
3.1.4 Unit SW download failed........................................................................................... 6
3.1.5 WSP R-Bus Error..................................................................................................... 6
3.1.6 No Table of contents Connection to Unit..................................................................... 6
3.2 Software and Parameter checks.................................................................................. 6
3.3 Neighbour Consistency checks..................................................................................... 6
3.4 Cell load checks........................................................................................................ 7
3.5 RAN Counter and KPI.................................................................................................. 7
3.5.1 Cell Avail............................................................................................................... 7
3.5.2 RRC p and access complete ratio............................................................................... 7
3.5.3 setup and access complete ratio............................................................................... 7
3.5.4 RAB drop ratio........................................................................................................ 8
3.6 UE Performance check................................................................................................ 8
4. Performance check with Field Measurements..................................................................... 8
5. Top 10 optimisation activities to improve call performance................................................... 9
5.1 Common Call Performance Issues.................................................................................. 9
5.2 Voice (AMR) specific performance Issues...................................................................... 11
5.3 Video Call Performance Issues.................................................................................... 12
5.4 PS Call Performance Issues........................................................................................ 12
5.5 ISHO performance.................................................................................................... 15
6. Optimisation Tools...................................................................................................... 15
6.1 Nokia Application Launcher (AL).................................................................................. 15
6.1.1 RNW Object Browser.............................................................................................. 15
6.1.2 RNW Online Management......................................................................................... 16
6.2 Nokia Plan Editor...................................................................................................... 16
6.3 EOS Reporting Solution (RS)....................................................................................... 17
6.4 NetAct Reporter....................................................................................................... 17
6.5 Field Measurement Tools (FMT)................................................................................... 17
6.5.1 RF scanner........................................................................................................... 18
6.5.2 NEMO TOM Drive Test tool....................................................................................... 18
6.6 Actix Analysis tool.................................................................................................... 19
7. References................................................................................................................. 20
8. Glossary..................................................................................................................... 21

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