How Do I Make an Inner Loop Power Measurement?

Measuring 3GPP TS 34.121 5.4.2 Inner Loop Power Control in the Uplink

1. Ensure that you have specified the proper Amplitude Offset for your test setup.
2. Ensure that the test set has been properly calibrated (see Calibrating the Test Set ).
3. Set the downlink and uplink channels:
   • Set Operating Mode ( F1 ) to Cell Off .
   • Set DL Channel ( F10 ) and Uplink Channel ( F11 ) to the appropriate "mid range" frequencies for your UE's operating band, as specified by 3GPP TS 34.108 5.1.1 (for example, for operating band I, DL Channel = 10700 and Uplink Channel = 9750 ).
   • Set Operating Mode to Active Cell .
4. Establish an RB Test Mode connection between the UE and test set (see How Do I Set Up a Call and Make a Connection? ).
5. Ensure that the Connected DL Channel Levels are set to their default values, as required by 3GPP TS 34.121 Table E.3.1 (select Generator Info , F3 on Call Control 2 of 5 ).
6. Set Cell Power ( F7 ) to -93 dBm .
7. Press the Measurement selection key.
8. Select Inner Loop Power .
9. Select Inner Loop Power Setup ( F1 ).
   • Set Test Segment to A.
   • Set Number of Slots as desired.
   • Select Close Menu ( F6 ).
10. Press the START SINGLE key.
11. Verify that the overall test segment result is Pass .
    
12. If desired, select Axis Control ( F2 ).
    • Set Start , Span , Reference and dB/div as needed to properly display the (blue) absolute power trace.
    • Press the More key to move to Axis Control 2 of 2 . Set Relative Power ( F1 ) as needed to properly display the (yellow) relative power trace.
    • Select Return ( F6 ).
13. If desired, select Marker ( F3 ) to turn on the marker on the graphical display and move the highlighted bar in the numerical results display area.
    
14. Select Inner Loop Power Setup ( F1 ).
    • Set Test Segment to B.
    • Select Close Menu ( F6 ).
15. Press the START SINGLE key.
16. Verify that the overall test segment result is Pass .
17. Repeat steps 14-16 for test segments C, E, F, G and H. Note: step D in 3GPP TS 34.121 5.4.2 is automatically performed as part of Test Segment E . For test segments E through H, ensure that Maximum Power Threshold for Test Control is set to Auto , Maximum Output Power Test Tolerance is set to 0.70 dB , Minimum Power Threshold for Test Control is set to Manual , and Minimum Power Threshold for Test Manual is set to -49 dBm (these are the default values), as required by 3GPP TS 34.121

Related Topics

Inner Loop Power Measurement Description

Inner Loop Power Troubleshooting

Programming an Inner Loop Power Measurement