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TRX Measurements (Fundamental Measurements) 3.
This chapter describes how to test TRX measurement using GPIB remote control software commands. For details of
GPIB commands and manual operation, refer to the LTE operation manual. GPIB commands are in red bold. At
Normal UE, the UE power class is assumed to be Class3. At HPUE, the UE power class is assumed to be Class1.
Before starting TRX measurement, do the following to ensure the call processing status is connected.
1. Initial Condition Setting(2.1.2)
2. Broadcast Information Update(2.1.5)
3. Location registration(2.1.3)
4. Test Mode Connection(2.1.4)
Then, set the average count for each measurement items to 20 times, except for special conditions.
TX Measurements 3.1.
The following test procedures can be used for both the MT8820C and MT8821C.
UE Maximum Output Power (6.2.2) 3.1.1.
This chapter describes UL measurement examples where (Modulation, RB) is (QPSK, 1), or (QPSK, PartialRB)
[Pass/Fail evaluation limits value setting]
1. Execute PWR_AVG 20 to set the average count of power measurement to 20 times.
2. Execute TP_MAXPWR_LL 20.3 to set TX1 - Max. Power (QPSK/1RB/PartialRB) Pass/Fail lower limit to 20.3 dBm.
3. Execute TP_MAXPWR_UL 25.7 to set TX1 - Max. Power (QPSK/1RB/PartialRB) Pass/Fail upper limit to 25.7 dBm.
[(QPSK, 1RB) measurements]
4. Execute TESTPRM TX_MAXPWR_Q_1 to set Test Parameter to TX1 - Max. Power (QPSK/1RB).
5. Execute ULRB_POS MIN to set UL RB Position to Min (#0).
6. Execute SWP to measure the power.
7. Execute POWER? AVG to read the TX power measurement result.
8. Execute POWERPASS? to check that the TX power measurement Pass/Fail judgment is Pass.
9. Execute ULRB_POS MAX to set UL RB Position to Max (#max).
10. Execute steps 6 to 8.
[(QPSK, PartialRB) measurements]
4. Execute TESTPRM TX_MAXPWR_Q_P to set Test Parameter to TX1 - Max. Power (QPSK/PartialRB).
5. Execute steps 5 to 9.
NOTE 1: At 1RB allocation, Min (#0), Mid (#Nrb/2), and Max (#max) used in this application note
each correspond to RB #0, RB #[N
RB
UL
/2] and RB #max, respectively, described in TS 36.521-1.
NOTE 2: At PartialRB allocation Min (#0) and Max (#max) used in this application note
each correspond to RB #0 and RB# (max +1 - RB allocation),respectively, described in TS 36.521-1.
NOTE 3: The 1RB allocation UL RB Position is divided as follows:
When BW
Channel
>
TC
, Min (#0) and Max (#max)
When BW
Channel
–
TC
, Min (#0)
When BW
Channel
= (F
UL_high
- F
UL_low
), Min (#0), Mid (#Nrb/2) and Max (#max)
NOTE 4: The UL RB Position of PartialRB allocation is Min (#0).
NOTE 5: The usual Pass/Fail evaluation value is set to the Band 1 default value described in TS36.521-1.
Since the evaluation value differs according to the Band, set the evaluation value described in
TS36.521-1 Table 6.2.2.5-1 at:
TP_MAXPWR_LL
TP_MAXPWR_UL
For the Pass/Fail evaluation values, refer to Chapter 3.7.4 Test Parameter Limit in the operation
manual.
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