14.18.6a EGPRS Usable receiver input level range in EGPRS2A Configuration
3GPP51.010-1Mobile Station (MS) conformance specificationPart 1: Conformance specificationTS
14.18.6a.1 Definition
The usable receiver input level range is the range of the radio frequency input level of a specified modulated signal over which bit error ratio stay between specified limits.
14.18.6a.2 Conformance requirement
1. The receiver input level range requirements of 3GPP TS 45.005 subclause 6.1 for raw data bits of 8PSK modulation under static condition shall be met:
1.1 Under normal conditions.
1.2 Under extreme conditions.
2. The receiver input level range requirements of 3GPP TS 45.005 subclause 6.1 for raw data bits of 16-QAM modulation under static condition shall be met:
3.1 Under normal conditions.
3.2 Under extreme conditions.
3. The receiver input level range requirements of 3GPP TS 45.005 subclause 6.1 for raw data bits of 32-QAM modulation under static condition shall be met:
5.1 Under normal conditions.
5.2 Under extreme conditions.
14.18.6a.3 Test purpose
1. To verify that the MS does not exceed the conformance requirement with an allowance for the statistical significance of the test.
1.1 Under normal conditions.
1.2 Under extreme conditions.
14.18.6a.4 Test Method
Initial Conditions
The MS is assumed to be EGPRS attached. The power control parameter ALPHA (α) is set to 0.
The SS establishes a downlink TBF on one timeslot.
The SS commands the MS to request an establishment of the TBF Uplink and to create a channel loop back after demodulation and before decoding. This is achieved by the EGPRS Switched Radio Loopback Mode (3GPP TS 04.14/44.014, subclause 5.5)
Test Procedure
For 8PSK Modulation:
a) The SS shall transmit the pseudo-random data using the standard 8PSK-modulated test signal in the Mid ARFCN range and the input level at the receiver input shall be -82 dBm, which level is subject to adjustment according to correction table in subclause 6.2. of 3GPP TS 45.005.
b) The SS compares the data that it sends to the MS with the data which is looped back from the receiver after demodulation and before decoding.
The SS tests the bit error ratio for the data bits, by examining sequences of at least the minimum number of samples specified in the test requirements. The number of error events is recorded.
c) Step b) is repeated with the input level at the receiver input increased to 73 dBVemf().
d) Step b) is repeated with the input level at the receiver input increased to 87 dBVemf().
e) Steps a) to d) are repeated under extreme test conditions.
For 16-QAM Modulation:
a) The SS shall transmit the pseudo-random data using the standard 16QAM-modulated test signal in the Mid ARFCN range and the input level at the receiver input shall be -80 dBm, which level is subject to adjustment according to correction table in subclause 6.2. of 3GPP TS 45.005.
b) The SS compares the data that it sends to the MS with the data which is looped back from the receiver after demodulation and before decoding.
The SS tests the bit error ratio for the data bits, by examining sequences of at least the minimum number of samples specified in the test requirements. The number of error events is recorded.
c) Step b) is repeated with the input level at the receiver input increased to 73 dBVemf().
d) Step b) is repeated with the input level at the receiver input increased to 84 dBVemf().
e) Steps a) to d) are repeated under extreme test conditions.
For 32-QAM Modulation:
a) The SS shall transmit the pseudo-random data using the standard 32QAM -modulated test signal in the Mid ARFCN range and the input level at the receiver input shall be -77 dBm, which level is subject to adjustment according to correction table in subclause 6.2. of 3GPP TS 45.005. For an EGPRS MS that only supports 16QAM modulation in the uplink, a 16QAM-modulated signal will be used for UL transmission.
b) The SS compares the data that it sends to the MS with the data which is looped back from the receiver after demodulation and before decoding.
The SS tests the bit error ratio for the data bits, by examining sequences of at least the minimum number of samples specified in the test requirements. The number of error events is recorded.
c) Step b) is repeated with the input level at the receiver input increased to 73 dBVemf().
d) Step b) is repeated with the input level at the receiver input increased to 84 dBVemf().
e) Steps a) to d) are repeated under extreme test conditions.
14.18.6a.5 Test Requirements
The error rate measured in this test shall not exceed the test limit error rate values given in table 14.18-11. This shall apply for any combination of normal and extreme test voltages and ambient temperature, for the different propagation conditions and for any level of input signal to the receiver.
Table 14.18-11: Limits for input level range
GSM 400, GSM 700, T-GSM 810, GSM 850 and GSM 900 |
DCS 1 800 and PCS 1 900 |
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Type of test signals |
Type of measurement |
Propagation Conditions |
Test limit Error rate % |
Minimum No. of samples |
Test limit Error rate % |
Minimum No. of samples |
8PSK |
BER |
Static<= 73dBVemf() Static <= 87dBµVemf() |
0,012 0,122 |
1 640 000 164 000 |
0,012 0,122 |
1 640 000 164 000 |
16-QAM |
BER |
Static<= 73dBVemf() Static <= 84dBµVemf() |
0,012 0,122 |
1 640 000 164 000 |
0,012 0,122 |
1 640 000 164 000 |
32-QAM |
BER |
Static<= 73dBVemf() Static <= 84dBµVemf() |
0,012 0,122 |
1 640 000 164 000 |
0,012 0,122 |
1 640 000 164 000 |