Drive Test Post Processing

Hi everyone. Happy New Year! Wish all thing become better this year and our resolutions will be done :). Now I’ll try to write about step needed after performing drive test, post-processing. Actually, post-processing is a more important part of cellular lifecycle. When my friends and I held a training on post processing (including RNO), they seemed more enthusiastic.  Post processing could be divided in two general steps, reporting and optimization.

Reporting is a process to show the summary of the performance parameters in a drive test result. The parameters usually called by KPI (Key Performance Indicators). In general, KPI is divided in two types,  events KPIs and radio KPIs. Examples of events KPIs are Drop Call Rate, Call Setup Success Rate, Handover Success Rate, etc. And examples of radio KPIs are RxLev, RxQual, BER, etc. Then, if  the reports show that the results doesn’t meet the KPI standards of the operator, we need to analyze the problem, and make optimization suggestions/recommendations. But in this post, I’m going to post only a little about optimization. This post will explain a little overview  about radio network optimization (RNO). And next time, I’ll try on posting about RNO in details and specifics (GSM, CDMA, or UMTS).

In drive test reporting, we usually need to make at least two reports format. Using Report Generator and  Mapinfo. Both of them have different functions. Report Generator (integrated program in TEMS Investigation Data Collection software) is needed to show the summary of the KPI in tabular and graphical form. And Mapinfo (one of popular GIS software) is needed to plot the KPI in geographical form. Here are the steps for making the reports :

1. Report Generator

Here are the steps to make a report using Report Generator :

  1. In TEMS Data Collection, click Logfile -> Report Generator
  2. Add the logfile(s)
  3. Set the output directory by clicking […] box
  4. Set the report Properties. In properties window, set the paramaters needed for report under IE(Information Elements), Events, Mobiles, and Uset Details tab
  5. Then, click OK. The result (in .htm format) could be opened in any internet browser.

2. Mapinfo

Here are the steps to make a report using Mapinfo :

  1. In TEMS Data Collection, click Logfile -> Export Logfile
  2. Click Add Order
  3. Choose the Mapinfo Tab-file format
  4. Set the IEs needed (e.g. for GSM : RxLev Sub,  RxQual Sub, SQI, TA, Lat, Long, etc..)
  5. Set the other options in Options tab
  6. If there are more than one logfile, we could merge the output by checking the Merge Output box
  7. Start the process
  8. Then, open the output directory. Make sure the exported files (in mapinfo format) are there (.tab, .dat, .id, .map)
  9. Open Mapinfo, and click File -> Open. Choose the exported .tab file.
  10. To create the thematic map, click Map -> Create Thematic Map
  11. Choose Region Range in the Ranges type
  12. Choose the table and field
  13. Customize the Ranges, Styles, and Legend according to operator standards.
  14. Repeat the steps for every needed KPIs.

For now, that’s all I can post for reporting. Maybe I’ll add more technical methods for reporting. And maybe I’ll add the detailed explanations and screenshots later. ;)

References :

  • TEMS Investigation Manuals
  • MobileCommLab Drive Test and Optimization Training Modules
  • Orinaica’s blog at wordpress.com
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