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How Do I Perform FPC Test (FPC Mode 000)?
Last updated: November 5, 2004
This section is only applicable to the lab application.
General Procedure for FPC Operation (FPC_Mode 000)
Step 1: Access FPC Info menus
-
Press the
Call Setup
key.
-
Press the left-side of
More
key until the
Call Control 4 of 4
menu is displayed.
-
Select the
Forward Power Control
(
F2
). The FPC Info menu is displayed and all of the parameters and operations relating to forward power control can be accessed.
Step 2: Set up FPC Mode
-
On
FPC Info 1 of 2
, press the
F3
(
FPC Mode
).
-
Set the FPC Mode to
000-Primary 800
.
Step 3: Set up FPC Parameters
-
On
FPC Info 1 of 2
, press the
F1
(
FPC Parameters
).
-
Set the following parameters as desired. For example,
-
Set the
Maximum F-FCH Level
to
-3 dB
.
-
Set the
F-FCH Target FER
to
1.0%
.
-
Set the
F-FCH Initial Setpoint
to
8 dB
.
-
Set the
F-FCH Minimum Setpoint
to
2 dB
.
-
Set the
F-FCH Maximum Setpoint
to
16 dB
.
-
Set the
F-FCH Step Size
to
0.5 dB
.
-
Press the
F6
(
Close Menu
).
Some of these parameters (such as target FER, minimum/maximum setpoint, etc. see
FPC Parameters
for details) can also be changed after a call has been established (after step 5).
Step 5: Establish a call
-
Establish a call in radio configuration (Fwd3, Rvs3) or above with loopback service option (such as SO2, 9, or 55). See
How Do I Set Up a Call?
for detailed procedure.
Step 6: Set up cell power, multi-path fading and external AWGN
To generate faded forward channel signals with AWGN, the test set requires a rear panel digital bus connecting to an external PC running Baseband Studio software. For detailed setup and operating instructions pertaining to faded signal generation, refer to
Digital Bus Information
.
Step 7: Request the Outer Loop Report from MS
-
On
FPC Info 1 of 2
, press the
F4
(
Request Outer Loop Report
).
-
Observe the MS reported F-FCH current setpoint (Eb/Nt) value on the
Inner/Outer Loop Power Control Information
window.
Step 8: Set up MS Reported FER
-
On
FPC Info 1 of 2
, press the
F2
(
MS Reported FER Parms
).
-
To make a periodic-based FER reporting from MS, set the following parameters:
-
Set the
Frame Interval of Report (Frames)
to the desired value (for example,
640
)
-
Set
Periodic Report Enable
to
On
.
To make a threshold-based FER reporting from MS, set the following parameters:
-
Set the
Bad Frame Threshold (Frames)
to the desired value (for example, 3)
-
Set the
Threshold Report Enable
to
On
.
-
Press the
F6
(
Close Menu
).
-
Observe the
MS Reported Frame Error Rate Information
window. You will see the value of the MS Reported FER will be updated either periodically or when the detected bad frames exceeds the specified threshold.
Step 9: Initiate Frame Error Rate measurement
To make a more accurate evaluation on the performance of the MS FPC, perform the Frame Error Rate measurement. Follow the general procedure of
Measuring Frame Error Rate (FER)
and set the parameters as required for your test.
Step 10: Repeat steps 6 - 9
-
Repeat steps 6 -8, change the cell power, external AWGN power and channel simulator configuration and then observe the measurement results.
Step 11: (Optional) Clear the MS reported results
-
To clear the MS reported outer loop report results shown on the Inner/Outer Loop Power Control Information window:
-
On FPC Info 2 of 2, press the
F2
(
Clear Outer Loop Report
).
To clear the MS reported FER results shown on the MS Reported Frame Error Rate Information window:
-
On FPC Info 2 of 2, press the
F3
(
Clear MS Reported FER
).
Testing 3.4.7 Demodulation of Forward Traffic Channel in Multipath Fading Channel with Closed Loop Power Control (FPC_MODE = '000')
This test requires faded signals with AWGN, which the test set must be equipped with a rear panel digital bus connecting to an external PC running Baseband Studio software. See
Digital Bus Information
for details.
This test examines the performance of forward power control by measuring the differences between the mobile station's received FER and the assigned target FER while not exceeding the specified Traffic Eb/Nt limits. This test will be performed on F-FCH (20 ms frame). The test set does not support tests on F-DCCH.
To perform the tests as specified in the standard, follow the procedures as describe in the
General Procedure for FPC Operation (FPC_Mode 000)
and change some settings per standard requirements. An example settings required for test 4 of 3.4.7 test is given in
Settings required to change for test 4 of 3.4.7
Settings required to change for test 4 of 3.4.7
|
Settings Specified in the Standard
|
Equivalent Settings on the Test Set
|
|
Parameters
|
Values
|
|
|
Step 2: Set up FPC Mode
|
|
FPC_MODE |
000 |
Set
FPC Mode
to
000-Primary 800
. |
|
Step 3: Set up FPC Parameters
|
|
Maximum F-FCH Ec/Ior (dB) |
-3 |
Set the
Maximum F-FCH Level
to
-3.00 dB
. |
|
FPC_FCH_FER (%) |
1 |
Set the
FPC F-FCH Target FER
to
1%
. |
|
FPC_FCH_INIT_SETPT
|
10.3
(assuming US PCS band is used)
|
Set the
FPC F-FCH Initial Setpoint
to
10.3 dB
.
Set the
FPC F-FCH Minimum Setpoint
to
10.3 dB
.
Set the
FPC F-FCH Maximum Setpoint
to
10.3 dB
.
Note that setting the initial/minimum/maximum setpoints to the same value will effectively disable the outer loop power control. This also indicates the current outer loop Eb/Nt setpoint will be fixed to the 10.3 dB.
|
|
FPC_FCH_MIN_SETPT
|
10.3
(assuming US PCS band is used)
|
|
FPC_FCH_MAX_SETPT
|
10.3
(assuming US PCS band is used)
|
|
PWR_CNTL_STEP (dB) |
0.5
|
Set the
FPC F-FCH Step Size
to
0.5 dB
.
|
|
Step 4: Set up code channel levels
|
|
Pilot Ec/Ior (dB) |
-7
|
Set the
Cell 1 F-Pilot Level
to
-7.00 dB.
Note that the default setting on the test set is -7 dB.
|
|
Traffic Ec/Ior (dB) |
-14.8 (for Band class 1- US PCS)
|
Set the
Cell 1 F-F-FCH/Trffic Level
to
-14.8 dB.
|
|
Step 6: Set up cell power, multi-path fading and external AWGN
|
|
On the test set,
-
Set the Cell 1 Power to -55 dBm/1.23 MHz. Note that Î
or
/Ioc is the ratio of Cell Power to AWGN equal to 4 dB. Since the Ioc is the value of AWGN equal to -59 dBm/1.23 MHz) so the Cell Power is the value of (Ioc + Ior/Ioc) equal to -55 dBm/1.23 MHz.
On the external channel simulator,
-
Set the multi-path fading simulation as specified in standard channel simulator configuration 3.
-
Set the external AWGN to -59 dBm/1.23 MHz.
For detailed setup and operating instructions pertaining to faded signal generation, see
Digital Bus Information
.
|
|
Step 9: Initiate Frame Error Rate measurement
|
|
On the Frame Error Rate Setup menu,
-
Set the Confidence Level to 95%.
-
Set the FER Requirement to 1.5% (change the setting as required for your test).
-
Set the Eb/Nt Limit to 10.8 dB (change the setting as required for your test).
-
Set the Minimum Frame Count to 350 frames (change the setting as required for your test).
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Testing 3.4.9 Demodulation of Forward Traffic Channel in Multipath Fading Channel with Outer Loop Power Control and Closed Loop Power Control (FPC_MODE = `000')
This test requires faded signals with AWGN, which the test set must be equipped with a rear panel digital bus connecting to an external PC running Baseband Studio software. See
Digital Bus Information
for details.
This test examines the performance of slow power control (outer loop power control) by checking the average Traffic Eb/Nt at the test set under a given frame error constraint and channel simulator configuration. This test will be performed on F-FCH (20 ms frame) in FPC mode 000. The test set does not support tests on F-DCCH
To perform the tests as specified in the standard, follow the procedures as described in the
General Procedure for FPC Operation (FPC_Mode 000)
and change some settings per standard requirements. An example settings required for test 5 of 3.4.9 test is given in
Settings required to change for test 5 of 3.4.9
Settings required to change for test 5 of 3.4.9
|
Settings Specified in the Standard
|
Equivalent Settings on the Test Set
|
|
Parameters
|
Values
|
|
|
Step 2: Set up FPC Mode
|
|
FPC_MODE |
000 |
Set FPC Mode to 000-Primary 800. |
|
Step 3: Set up FPC Parameters
|
|
Maximum F-FCH Ec/Ior (dB) |
-3 |
Set the
Maximum F-FCH Level
to
-3.00 dB
. |
|
FPC_FCH_FER (%) |
1 |
Set the
FPC F-FCH Target FER
to
1%
. |
|
FPC_FCH_INIT_SETPT (dB)
|
6
(assuming US PCS band is used)
|
Set the
FPC F-FCH Initial Setpoint
to
6 dB
.
|
|
FPC_FCH_MIN_SETPT (dB)
|
0
(assuming US PCS band is used)
|
Set the
FPC F-FCH Minimum Setpoint
to
0 dB
.
|
|
FPC_FCH_MAX_SETPT (dB)
|
31.875
(assuming US PCS band is used)
|
Set the
FPC F-FCH Maximum Setpoint
to
31.875 dB
.
|
|
PWR_CNTL_STEP (dB) |
0.5
|
Set the
FPC F-FCH Step Size
to
0.5 dB
.
|
|
Step 4: Set up code channel levels
|
|
Pilot Ec/Ior (dB) |
-7
|
Set the
Cell 1 F-Pilot Level
to
-7.00 dB.
Note that the default setting on the test set is -7 dB.
|
|
Traffic Ec/Ior (dB) |
-16.88 (for Band class 1- US PCS)
|
Set the
Cell 1 F-F-FCH/Trffic Level
to
-16.88 dB.
It is set based on the formula of
which corresponds to the situation of channel simulator configuration 1, FCH Eb/Nt = 6 dB (for test 5, Band Class 1), FCH_CHip_Bit = 1228800/9600, Î
or
/Ioc = 8 dB.
|
|
Step 6: Set up cell power, multi-path fading and external AWGN
|
|
On the test set,
-
Set the Cell 1 Power to -55 dBm/1.23 MHz. Note that Î
or
/Ioc is the ratio of Cell Power to AWGN equal to 8 dB. Since the Ioc is the value of AWGN equal to -63 dBm/1.23 MHz) so the Cell Power is the value of (Ioc + Ior/Ioc) equal to -55 dBm/1.23 MHz.
On the external channel simulator,
-
Set the multi-path fading simulation as required in standard channel simulator configuration 1.
-
Set the external AWGN to -63 dBm/1.23 MHz.
For detailed setup and operating instructions pertaining to faded signal generation, see
Digital Bus Information
.
|
|
Step 9: Initiate Frame Error Rate measurement
|
|
On the Frame Error Rate Setup menu,
-
Set the Confidence Level to 95%.
-
Set the FER Requirement to 1.5% (change the setting as required for your test).
-
Set the Eb/Nt Limit to 6.5 dB (change the setting as required for your test).
-
Set the Minimum Frame Count to 500 (change the setting as required for your test).
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