Drive Test Engineer Interview Questions

 Q.1: How to estimate the antenna /feeder cross during testing?

When we at the service cell coverage the rxlev is other cell’s .and the rxlev is weakly.When we test ,target cell ,the sorcerer line connect to other cell. 

 Q.2: Please Analysis of Causes of call drop.
Poor coverage:
Coverage hole, dead zone, isolated island, up link/down link unbalance Coverage over shooting Signal attenuation.
Interference:
Internal interference, external interference and the equipment interference ;Strong down link/ up link  interference.
Parameter setting not proper:
Radio link timeout counter, handover, power control etc.
Handover failure:

Q.3: Please Analysis of Causes of handover failure.

 missing neighbor or neighbor not defined
 parameter for the handover are not good
③ Interference

Q.4: Introduce the software and test equipment you have used Software:

 TEMS product:TEMS9.1;8.14;8.03;
 Nemo
 Probe1.5,probe1.4;probe1.3; assistant analysis
 Mapinfo:9.0;8.5;7.0;
 actix analysis
 Test mobile:
sonyerrisson: k800i; k790i; z750i; w600; w995
Nokia: 6680; N70; N80
Motorola: V3XX

Q.5: Introduce the mapinfo and googlearth.

① Check the site location from google earth or map info
② check the environment nearby the site and make a plan for the testing from google earth and mapinfo;
 analysis the log file from map info.

Q.6: how can analysis the logfile and make report.

 actix software analysis
 Tems software analysis
 assistant software analysis
Check coverage,quality ,handover and Throughput and so on.

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