14.3 Usable receiver input level range

3GPP51.010-1Mobile Station (MS) conformance specificationPart 1: Conformance specificationTS

14.3.1 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 or frame erasure ratios stay between specified limits.

14.3.2 Conformance requirement

1. The receiver input level range requirements of 3GPP TS 05.05 subclause 6.1 for TCH/FS class II RBER under static and EQ propagation conditions shall be met:

1.1 Under normal conditions.

1.2 Under extreme conditions.

14.3.3 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.

14.3.4 Method of test

14.3.4.1 Initial conditions

A call is set up according to the generic call set up procedure on a TCH/FS with an ARFCN in the Mid ARFCN range, power control level set to maximum.

The SS transmits Standard Test Signal C1 on the TCH/FS.

The SS commands the MS to create traffic channel loop back signalling erased frames (subclause 36.2.1.1.2).

14.3.4.2 Procedure

a) The SS compares the data that it sends to the MS with the signal which is looped back from the receiver after demodulation and decoding.

The SS tests the bit error ratio for the non-protected bits of TCH/FS class II, by examining sequences of at least the minimum number of samples of consecutive bits of class II. The number of error events is recorded.

b) Step a) is repeated with the amplitude of the wanted signal increased to an input level at the receiver input of 73 dBVemf(  ).

c) Step a) is repeated with the amplitude of the wanted signal increased to an input level at the receiver input of:

GSM 400 98 dBVemf(  )

GSM 700 98 dBVemf( )

T-GSM 810 98 dBVemf( )

GSM 850 98 dBVemf( )

GSM 900 98 dBVemf(  )

DCS 1 800 90 dBVemf(  )

PCS 1 900 90 dBVemf(  )

d) The SS fading function is set to EQ.

e) Step a) is repeated with the amplitude of the wanted signal set to respectively 20 dB above reference sensitivity level(  ) and 73dBVemf(  ) at the receiver input.

f) The test is repeated under extreme test conditions.

14.3.5 Test requirements

The error rate measured in this test shall not exceed the test limit error rate values given in table 14-14. 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 14-14: Limits for input level range

GSM 400, GSM 700, T-GSM 810, GSM 850 and GSM 900

DCS 1 800 and PCS 1 900

Propagation conditions

Test limit error rate %

Minimum No. of samples

Test limit error rate %

Minimum No. of samples

Static <=73 dBVemf( )

0,012

1640000

0,012

1 640 000

Static 98 dBVemf( )

0,122

164000

Static 90 dBVemf( )

0,122

164 000

EQ

3,25

120000

3,25

60 000