14.5 Adjacent channel rejection
3GPP51.010-1Mobile Station (MS) conformance specificationPart 1: Conformance specificationTS
14.5.1 Adjacent channel rejection – speech channels
14.5.1.1 TCH/FS
14.5.1.1.1 Definition
The adjacent channel selectivity is a measure of the capability of the receiver to receive a wanted modulated signal without exceeding a given degradation due to the presence of an unwanted signal in the adjacent channel.
The adjacent channel can be adjacent in the RF spectrum or in time. There are therefore two types of adjacent channel selectivity:
1) Adjacent RF channel selectivity which is specifically tested in this subclause.
2) Adjacent Time Slot selectivity, which is implicitly tested in test 14.2.1.
14.5.1.1.2 Conformance requirement
1. With adjacent channel interference at 200 kHz above and below the wanted signal and signal level 9 dB above the wanted signal level:
1.1 For a TUhigh faded wanted signal and a TUhigh adjacent channel interferer, the FER for TCH/FS shall be within the requirements of table 2 in 3GPP TS 05.05 subclause 6.3.
1.2 For a TUhigh faded wanted signal and a TUhigh adjacent channel interferer, the Class Ib RBER shall be within the requirements of table 2 in 3GPP TS 05.05 subclause 6.3.
1.3 For a TUhigh faded wanted signal and a TUhigh adjacent channel interferer, the Class II RBER shall be within the requirements of table 2 in 3GPP TS 05.05 subclause 6.3.
1.4 For a TUhigh faded wanted signal and a TUhigh adjacent channel interferer, the Class II RBER shall be within the requirements of table 2 in 3GPP TS 05.05 under extreme test conditions; 3GPP TS 05.05 subclause 6.3 and annex D subclauses D.2.1 and D.2.2.
2. For adjacent channel interference at 400 kHz above and below the wanted signal frequency and signal level 41 dB above the wanted signal level:
2.1 For a TUhigh faded wanted signal and a TUhigh adjacent channel interferer, the FER for TCH/FS shall be within the requirements of table 2 in 3GPP TS 05.05 subclause 6.3.
2.2 For a TUhigh faded wanted signal and a TUhigh adjacent channel interferer, the Class Ib RBER shall be within the requirements of table 2 in 3GPP TS 05.05 subclause 6.3.
2.3 For a TUhigh faded wanted signal and a TUhigh adjacent channel interferer, the Class II RBER shall be within the requirements of table 2 in 3GPP TS 05.05 subclause 6.3.
2.4 For a TUhigh faded wanted signal and a TUhigh adjacent channel interferer, the Class II RBER shall be within the requirements of table 2 in 3GPP TS 05.05 under extreme test conditions; 3GPP TS 05.05 subclause 6.3 and annex D subclauses D.2.1 and D.2.2.
If a system simulator does not support the faded interferer, a static adjacent interferer has to be used. The following requirements apply.
2.5 For a TUhigh faded wanted signal and a static adjacent channel interferer, the FER for TCH/FS shall be better than:
GSM 400, GSM 700, GSM 850 and GSM 900: 10,2* %; 3GPP TS 05.05, subclause 6.3;
DCS 1 800 and PCS 1 900: 5,1* %; 3GPP TS 05.05, subclause 6.3.
2.6 For a TUhigh faded wanted signal and a static adjacent channel interferer, the Class Ib RBER shall be better than:
GSM 400, GSM 700, GSM 850 and GSM 900: 0,72/ %; 3GPP TS 05.05, subclause 6.3;
DCS 1 800 and PCS 1 900: 0,45/ %; 3GPP TS 05.05, subclause 6.3.
2.7 For a TUhigh faded wanted signal and a static adjacent channel interferer, the Class II RBER shall be better than:
GSM 400, GSM 700, GSM 850 and GSM 900: 8,8 %; 3GPP TS 05.05, subclause 6.3;
DCS 1 800 and PCS 1 900: 8,9 %; 3GPP TS 05.05, subclause 6.3.
2.8 For a TUhigh faded wanted signal and a static adjacent channel interferer, the Class II RBER shall be better than:
GSM 400, GSM 700, GSM 850 and GSM 900: 8,8 %;
DCS 1 800 and PCS 1 900: 8,9 %.
under extreme test conditions; 3GPP TS 05.05, subclause 6.3, annex D subclauses D.2.1 and D.2.2.
3GPP TS 45.05 subclause 2:
For T-GSM 810 the requirements for GSM 900 shall apply, apart for those parameters for which a separate requirement exists.
14.5.1.1.3 Test purpose
1 To verify that with a TUhigh adjacent channel interferer at 200 kHz above and below the wanted TUhigh signal frequency and signal level 9 dB above the wanted signal level:
1.1 Conformance requirement 1.1 is met with an allowance for the statistical significance of the test.
1.2 Conformance requirement 1.2 is met with an allowance for the statistical significance of the test.
1.3 Conformance requirement 1.3 is met with an allowance for the statistical significance of the test.
1.4 Conformance requirement 1.4 is met with an allowance for the statistical significance of the test.
2. To verify that with a TUhigh adjacent channel interferer at 400 kHz above and below a TUhigh wanted signal frequency and signal level 41 dB above the wanted signal level:
2.1 Conformance requirement 2.1 is met with an allowance for the statistical significance of the test.
2.2 Conformance requirement 2.2 is met with an allowance for the statistical significance of the test.
2.3 Conformance requirement 2.3 is met with an allowance for the statistical significance of the test.
2.4 Conformance requirement 2.4 is met with an allowance for the statistical significance of the test.
3. If a static adjacent channel interferer is used due to system simulation limitation the following requirements apply.
3.1 Conformance requirement 2.5 is met with an allowance for the statistical significance of the test.
3.2 Conformance requirement 2.6 is met with an allowance for the statistical significance of the test.
3.3 Conformance requirement 2.7 is met with an allowance for the statistical significance of the test.
3.4 Conformance requirement 2.8 is met with an allowance for the statistical significance of the test.
14.5.1.1.4 Method of test
14.5.1.1.4.1 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 power.
The SS commands the MS to create the traffic channel loop back signalling erased frames.
The SS transmits Standard Test Signal C1 on the TCH (wanted signal).
14.5.1.1.4.2 Procedure
a) In addition to the wanted signal, the SS transmits an independent, uncorrelated interfering signal, Standard Test Signal I1 (unwanted signal).
The unwanted signal is continuous and has no fixed relationship with the bit transitions of the wanted signal.
The fading characteristic of the wanted and the unwanted signal is set to TUhigh.
The unwanted signal is transmitted at a nominal frequency 200 kHz above the nominal frequency of the wanted signal. Its amplitude is set to 9dB above that of the wanted signal.
b) The SS compares the data of the signal that it sends to the MS with the signal which is looped back from the receiver after demodulation and decoding, and checks the frame erasure indication.
c) The SS tests the frame erasure compliance for the TCH/FS by examining at least the minimum number of samples of consecutive frames. The number of frame erasure events is recorded.
d) The SS determines the number of residual bit error events for the bits of the class Ib and class II, by examining sequences of at least the minimum number of samples of consecutive bits of class Ib and class II, Bits are only taken from those frames for which no bad frame indication was given.
e) The measurement of steps c) and d) is repeated with the unwanted signal on a frequency at the same displacement from, but below, the frequency of the wanted signal.
f) The measurement of steps c) to e) shall be repeated for a displacement of the unwanted signal of 400 kHz, and with the amplitude of the unwanted signal 41 dB above the level of the wanted input signal, The fading characteristic of the wanted and the unwanted signal is set to TUhigh. If a system simulator does not support the faded interferer, a static adjacent interferer may be used.
g) Steps c) to f) are repeated for class II BER under extreme test conditions.
14.5.1.1.5 Test requirements
Table 14-22: Limits for adjacent channel selectivity
GSM 400, GSM 700, T-GSM 810, GSM 850 and GSM 900 |
DCS 1 800 and PCS 1 900 |
|||||
Interference at |
Channel |
Type of measurement |
Test limit error rate % |
Minimum No. of samples |
Test limit error rate % |
Minimum No. of samples |
200 kHz |
TCH/FS |
FER |
6,742* |
8 900 |
3,371* |
17 800 |
class Ib |
RBER |
0,420/ |
1 000 000 |
0,270/ |
2 000 000 |
|
class II |
RBER |
8,333 |
600 000 |
8,333 |
1 200 000 |
|
400 kHz Interferer TUhight |
TCH/FS class Ib class II |
FER RBER RBER |
6,742* 0,420/ 8,333 |
8 900 1 000 000 600 000 |
3,371* 0,270/ 8,333 |
17 800 2 000 000 1 200 000 |
400 kHz |
TCH/FS |
FER |
11,461* |
8 900 |
5,714* |
10 500 |
Interferer |
class Ib |
RBER |
0,756/ |
1 000 000 |
0,483/ |
1 200 000 |
Static |
class II |
RBER |
9,167 |
600 000 |
9,167 |
720 000 |
The error rates measured in this test shall not exceed the test limit error rate given in table 14-22. This shall apply for any combination of normal and extreme test voltages and ambient temperature, and with the interfering signals at either side of the wanted frequency.
The parameter can range from 1 to 1,6. The value of for the RBER test on TCH/FS class Ib bits under particular measurement conditions shall be the same as that determined in the FER test on TCH/FS under the same conditions.
NOTE: A static unwanted signal may be used to avoid a potential problem with the implementation of the fading simulator.
14.5.1.1a Adjacent Channel Interference – TCH/FS in TIGHTER configuration
14.5.1.1a.1 Definition
The adjacent channel selectivity is a measure of the capability of the receiver to receive a wanted modulated signal without exceeding a given degradation due to the presence of an unwanted signal in the adjacent channel.
The adjacent channel can be adjacent in the RF spectrum or in time. There are therefore two types of adjacent channel selectivity:
1) Adjacent RF channel selectivity which is specifically tested in this subclause.
2) Adjacent Time Slot selectivity, which is implicitly tested in test 14.2.1.
14.5.1.1a.2 Conformance requirement
3GPP TS 45.005 subclause 6.3.3
Table 6.3-1a: Reference interference ratio requirements in adjacent channels for Packet-switched (Normal symbol-rate), Enhanced circuit-switched data, Wideband AMR and 8-PSK modulated AMR channels, speech and associated control channels in VAMOS mode, TIGHTER – MS
Modulation of wanted signal |
||||||
GMSK |
8-PSK |
16-QAM |
32-QAM |
AQPSK |
||
for adjacent (200 kHz) interference |
C/Ia1 = |
C/Ic ‑ 18 dB, see table 2af for TIGHTER MS |
See table 2l for speech, see tables 2g, 2i, 2n and 2w for other channels, see table 2af for TIGHTER MS |
See table 2w, see table 2af for TIGHTER MS |
See table 2w, see table 2af for TIGHTER MS |
See table 2aa and 2ab |
for adjacent (400 kHz) interference |
C/Ia2 = |
C/Ic ‑ 50 dB |
C/Ic – 50 dB |
C/Ic – 48 dB |
C/Ic – 48 dB |
[Note 1] |
for adjacent (600 kHz) interference |
C/Ia3 = |
C/Ic ‑ 58 dB |
C/Ic – 58 dB |
|||
NOTE 1: The adjacent channel interference @ 400 kHz requirement (C/Ia2) does not apply to channels in VAMOS mode. |
NOTE: The C/Ia3 figure is given for information purposes and will not require testing. It was calculated for the case of an equipment with an antenna connector, operating at output power levels of +33 dBm and below. Rejection of signals at 600 kHz is specified in subclause 5.1.
3GPP TS 45.005 subclause 6.3.4
For all adjacent channel (200 kHz) requirements specified in table 2af for TIGHTER MS, the wanted signal level shall be: -75 dBm + Iar + Corr, where:
Iar = the adjacent channel (200 kHz) interference ratio according to table 2af
Corr = the correction factor for reference performance according to table 6.2-4.
14.5.1.1a.3 Test purpose
1. For TCH/FS FER, MS shall meet the reference interference performance mentioned in 3GPP TS 45.005 sub clause 6.3.3, for adjacent-channel interference ratio mentioned in table 2af according to propagation conditions.
2. At reference adjacent-channel interference, the TCH/FS class Ib BER shall meet the reference interference performance of table 2af in 3GPP TS 45.005.
3. At reference adjacent-channel interference, the TCH/FS class II BER shall meet the reference interference performance of table 2af in 3GPP TS 45.005.
14.5.1.1a.4 Method of test
14.5.1.1a.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 power.
The SS commands the MS to create the traffic channel loop back signalling erased frames.
The SS transmits Standard Test Signal C1 on the TCH (wanted signal).
14.5.1.1a.4.2 Procedure
a) In addition to the wanted signal, the SS transmits an independent, uncorrelated interfering signal, Standard Test Signal I1 (unwanted signal).
The unwanted signal is continuous and has no fixed relationship with the bit transitions of the wanted signal.
The fading characteristic of the wanted and the unwanted signal is set to TUhigh no FH.
The unwanted signal is transmitted at a nominal frequency 200 kHz above the nominal frequency of the wanted signal. Its amplitude is set according to the specified reference interference ratio as in table 2af.
b) The SS compares the data of the signal that it sends to the MS with the signal which is looped back from the receiver after demodulation and decoding, and checks the frame erasure indication.
c) The SS tests the frame erasure compliance for the TCH/FS by examining at least the minimum number of samples of consecutive frames. The number of frame erasure events is recorded.
d) The SS determines the number of residual bit error events for the bits of the class Ib and class II, by examining sequences of at least the minimum number of samples of consecutive bits of class Ib and class II, Bits are only taken from those frames for which no bad frame indication was given.
e) The measurement of steps c) and d) is repeated with the unwanted signal on a frequency at the same displacement from, but below, the frequency of the wanted signal.
f) The measurement of steps c) to e) shall be repeated for a displacement of the unwanted signal of 400 kHz, and with the amplitude of the unwanted signal 41 dB above the level of the wanted input signal. The unwanted signal is set to TUhigh. If, due to system simulator limitation fading is not possible, a static interferer may be used (see table 1.5.1.1a-1 for different limits).
g) Steps c) to f) are repeated for class II BER under extreme test conditions.
14.5.1.1a.5 Test requirements
Table 14.5.1.1a-1: Limits for adjacent channel selectivity
GSM 850 and GSM 900 |
DCS 1 800 and PCS 1 900 |
|||||
Interference at |
Channel |
Type of measurement |
Test limit error rate % |
Minimum No. of samples |
Test limit error rate % |
Minimum No. of samples |
200 kHz/400 kHz. (faded interferer |
TCH/FS |
FER |
1 |
8 900 |
1 |
17 800 |
class Ib class II |
RBER RBER |
0.07 4.12 |
1 000 000 600 000 |
0.07 5.87 |
2 000 000 1 200 000 |
|
400 kHz (static interferer) |
TCH/FS |
FER |
11,461* |
8 900 |
5,714* |
10 500 |
class Ib |
RBER |
0,756/ |
1 000 000 |
0,483/ |
1 200 000 |
|
class II |
RBER |
9,167 |
600 000 |
9,167 |
720 000 |
14.5.1.2 TCH/AFS
14.5.1.2.1 Definition
The adjacent channel selectivity is a measure of the capability of the receiver to receive a wanted modulated signal without exceeding a given degradation due to the presence of an unwanted signal in the adjacent channel.
The adjacent channel can be adjacent in the RF spectrum or in time. There are therefore two types of adjacent channel selectivity:
1) Adjacent RF channel selectivity, which is specifically tested in this subclause.
2) Adjacent Time Slot selectivity, which is not tested in this subclause.
14.5.1.2.2 Conformance requirement
1. With adjacent channel interference at 200 kHz above and below the wanted signal and signal level 9 dB above the wanted signal level:
1.1 For a TUhigh faded wanted signal and a TUhigh adjacent channel interferer, the FER for TCH/AFS shall be within the requirements of table 2 in 3GPP TS 05.05; 3GPP TS 05.05, 6.3.
1.2 For a TUhigh faded wanted signal and a TUhigh adjacent channel interferer, the Class Ib and Class II RBER shall be within the requirements of table 2 in 3GPP TS 05.05; 3GPP TS 05.05, 6.3.
2. For adjacent channel interference at 400 kHz above and below the wanted signal frequency and signal level 41 dB above the wanted signal level:
2.1 For a TUhigh faded wanted signal and a TUhigh adjacent channel interferer, the FER for TCH/AFS shall be within the requirements of table 2 in 3GPP TS 05.05; 3GPP TS 05.05, 6.3.
1.2 For a TUhigh faded wanted signal and a TUhigh adjacent channel interferer, the Class Ib and Class II RBER shall be within the requirements of table 2 in 3GPP TS 05.05; 3GPP TS 05.05, 6.3.
14.5.1.2.3 Test purpose
1 To verify that with a TUhigh adjacent channel interferer at 200 kHz above and below the wanted TUhigh signal frequency and the interfering signal at a level resulting in the specified interference ratio:
1.1 Conformance requirement 1.1 is met with an allowance for the statistical significance of the test.
1.2 Conformance requirement 1.2 is met with an allowance for the statistical significance of the test.
2. To verify that with a TUhigh adjacent channel interferer at 400 kHz above and below a TUhigh wanted signal frequency and the interfering signal at a level resulting in the specified interference ratio:
2.1 Conformance requirement 2.1 is met with an allowance for the statistical significance of the test.
2.2 Conformance requirement 2.2 is met with an allowance for the statistical significance of the test.
14.5.1.2.4 Method of test
14.5.1.2.4.1 Initial conditions
A call is set up according to the generic call set up procedure on a TCH/AFS with an ARFCN in the mid ARFCN range, power control level set to maximum power.
The multirate configuration indicates the use of a codec set limited to 12.2 kbit/s.
The SS commands the MS to create the traffic channel loop back signalling erased frames.
The SS transmits Standard Test Signal C1 on the TCH (wanted signal).
14.5.1.2.4.2 Procedure
a) In addition to the wanted signal, the SS transmits an independent, uncorrelated interfering signal, Standard Test Signal I1 (unwanted signal).
The unwanted signal is continuous and has no fixed relationship with the bit transitions of the wanted signal.
The fading characteristic of the wanted and the unwanted signal is set to TUHigh.
The unwanted signal is transmitted at a nominal frequency 200 kHz above the nominal frequency of the wanted signal. Its amplitude is set according to the specified reference interference ratio (‑9 dB for 200 kHz offset), meaning 9 dB above that of the wanted signal.
b) The SS compares the data of the signal that it sends to the MS with the signal which is looped back from the receiver after demodulation and decoding, and checks the frame erasure indication.
c) The SS tests the frame erasure compliance for the TCH/AFS by examining at least the minimum number of samples of consecutive frames. The number of frame erasure events is recorded.
d) The SS determines the number of residual bit error events for the bits of the class Ib, by examining sequences of at least the minimum number of samples of consecutive bits of class Ib, Bits are only taken from those frames for which no bad frame indication was given.
e) The unwanted signal is moved to a nominal frequency 200 kHz below the nominal frequency of the wanted signal. Its amplitude is set according to the specified reference interference ratio (‑9 dB-3 dB for 200 kHz offset), meaning 12 dB above that of the wanted signal.
f) The SS uses a Channel Mode Modify procedure to change the active codec set to 7.95 kbit/s and steps b) to d) are repeated.
g) The unwanted signal is moved to a nominal frequency 400 kHz above the nominal frequency of the wanted signal. Its amplitude is set to 3 dB below the reference interference ratio ((‑41 dB ‑ 3 dB) for 400 kHz offset), meaning 44 dB above that of the wanted signal.
h) The SS uses a Channel Mode Modify procedure to change the active codec set to 5.9 kbit/s and steps b) to d) are repeated.
i) The unwanted signal is moved to a nominal frequency 400 kHz below the nominal frequency of the wanted signal. Its amplitude is set to 3 dB below the reference interference ratio ((‑41 dB ‑ 3 dB) for 400 kHz offset), meaning 44 dB above that of the wanted signal.
j) The SS uses a Channel Mode Modify procedure to change the active codec set to 4.75 kbit/s and steps b) to d) are repeated.
Maximum/Minimum Duration of Test
Pre Rel-5 MS
Maximum: 16 minutes (GSM850, GSM900), 42 minutes (DCS1800, PCS1900).
Minimum: 14 minutes (GSM850, GSM900), 7 minutes (DCS1800, PCS1900).
Rel-5 onwards MS
Maximum: 23 minutes (GSM850, GSM900), 125 minutes (DCS1800, PCS1900).
Minimum: 14 minutes (GSM850, GSM900), 17 minutes (DCS1800, PCS1900).
14.5.1.2.5 Test requirements
Testing the adjacent channel interference performance is performed using statistical methods that lead to an early pass/fail decision with test time significantly reduced for MS with BER/BLER not on the limit.
For more information on statistical testing of BER/BLER performance, especially the definition of the limit lines refer to Annex 6.2
Wrong decision risk F for one single error ratio test:
Fpass = Ffail = F and F = 0.2%
Wrong decision probability D per test step:
Dpass = Dfail = D and D = 0.0085%
Parameters for limit lines:
1. D = 0.000085 wrong decision probability per test step.
2. M = 1.5 bad DUT factor
3. ne number of (error) events.
4. ns number of samples. The error rate is calculated from ne and ns.
Limit checking
Before limit checking is valid the minimum test time due to fading needs to be considered:
Testing under multipath and interference conditions requires that at least 990 wavelengths are crossed with the speed given in the fading profile. This leads to a minimum test time depending on the frequency range. No early pass/fail decision is allowed until the minimum test time due to fading has elapsed.
Table 14-56: Minimum test times due to TU high fading conditions
Full Rate 50 km/h |
|||||||
Frequency |
0,4 |
0,7 |
0,85 |
0,9 |
1,8 |
1,9 |
GHz |
Wavelength |
0,75 |
0,43 |
0,35 |
0,33 |
0,17 |
0,16 |
m |
990 Waves |
743 |
424 |
349 |
330 |
165 |
156 |
m |
min net test time |
53 |
31 |
25 |
24 |
12 |
11 |
s @ 50km/h |
min test time |
428 |
244 |
201 |
190 |
95 |
90 |
s |
0:07:08 |
0:04:04 |
0:03:21 |
0:03:10 |
0:01:35 |
0:01:30 |
hh:mm:ss |
If the minimum test time due to multipath conditions exceeds the target test time, then the test runs for the minimum test time due to multipath conditions and the decision is done by comparing the result with the “derived test limit”. In this case early pass/fail decisions are obsolete.
If the target test time exceeds the minimum test time due to multipath conditions early pass/fail decisions can be headed for in order to accelerate test execution.
For an early decision a minimum number of (error) events is necessary.
For an early pass decision ne ≥ 1 (inclusive artificial error)
For an early fail decision ne ≥ 7
When the target test time has been reached the test is finished and a pass/fail decision can be made.
The error rates measured for different channels and under the different propagation conditions shall be tested according to the values given in table 14-57 or 14-58. Adjacent channel rejection tests with a frequency condition noted as "@‑ndB" are performed for an interference ratio n dB below the reference interference ratio (see 3GPP TS 05.05). Where an entry in the table is ‘-‘, this combination should not be tested.
Table 14-57: Statistical test limits for GSM 400, GSM 700, T-GSM 810, GSM 850 and GSM 900 adjacent channel rejection
TU high no FH |
||||||||
0.4 to 0.9GHz |
frames per s |
Orig. BER |
Derived |
Target number |
Target test |
Target test time |
||
Channel |
bits per sec |
clas1b per s |
requirement |
test limit |
of samples |
time (s) |
(hh:mm:ss) |
|
AFS 12.2 |
frames |
12200 |
50 |
0,060000 |
0,074040 |
4660 |
93 |
00:01:33 |
Class1b |
12200 |
8150 |
0,017000 |
0,020978 |
16446 |
2 |
00:00:02 |
|
AFS 7.95 |
frames @-3dB |
7950 |
50 |
Pre Rel-5: 0,075000 Rel-5: 0,053000 |
Pre Rel-5: 0,092550 Rel-5: 0,065402 |
Pre Rel-5: 3728 Rel-5: 5275 |
Pre Rel-5: 75 Rel-5: 106 |
Pre Rel-5: 00:01:15 Rel-5: 00:01:46 |
Class1b @-3dB |
7950 |
4200 |
Pre Rel-5: 0,015000 Rel-5: 0,010000 |
Pre Rel-5: 0,018510 Rel-5: 0,012340 |
Pre Rel-5: 18639 Rel-5: 27958 |
Pre Rel-5: 4 Rel-5: 7 |
Pre Rel-5: 00:00:04 Rel-5: 00:00:07 |
|
AFS 5.9 |
frames @-3dB |
5900 |
50 |
Pre Rel-5: 0,032000 Rel-5: 0,020000 |
Pre Rel-5: 0,039488 Rel-5: 0,024680 |
Pre Rel-5: 8737 Rel-5: 13979 |
Pre Rel-5: 175 Rel-5: 280 |
Pre Rel-5: 00:02:55 Rel-5: 00:04:40 |
Class1b @-3dB |
5900 |
3150 |
Pre Rel-5: 0,002900 Rel-5: 0,002300 |
Pre Rel-5: 0,003579 Rel-5: 0,002838 |
Pre Rel-5: 96407 Rel-5: 121556 |
Pre Rel-5: 31 Rel-5: 39 |
Pre Rel-5: 00:00:31 Rel-5: 00:00:39 |
|
AFS 4.75 |
frames @-3dB |
4750 |
50 |
Pre Rel-5: 0,017000 Rel-5: 0,008200 |
Pre Rel-5: 0,020978 Rel-5: 0,010119 |
Pre Rel-5: 16446 Rel-5: 34095 |
Pre Rel-5: 329 Rel-5: 682 |
Pre Rel-5: 00:05:29 Rel-5: 00:11:22 |
Class1b @-3dB |
4750 |
2800 |
Pre Rel-5: 0,001500 Rel-5: 0,001100 |
Pre Rel-5: 0,001851 Rel-5: 0,001357 |
Pre Rel-5: 186386 Rel-5: 254162 |
Pre Rel-5: 67 Rel-5: 91 |
Pre Rel-5: 00:01:07 Rel-5: 00:01:31 |
Table 14-58: Statistical test limits for DCS 1 800 and PCS 1 900 adjacent channel rejection
TU high no FH |
||||||||
1.8 to 1.9 GHz |
frames per s |
Orig. BER |
Derived |
Target number |
Target test |
Target test time |
||
Channel |
bits per sec |
clas1b per s |
requirement |
test limit |
of samples |
time (s) |
(hh:mm:ss) |
|
AFS 12.2 |
frames |
12200 |
50 |
Pre Rel-5: 0,035000 Rel-5: 0,027000 |
Pre Rel-5: 0,043190 Rel-5: 0,033318 |
Pre Rel-5: 7898 Rel-5: 10355 |
Pre Rel-5: 160 Rel-5: 207 |
Pre Rel-5: 00:02:40 Rel-5: 00:03:27 |
Class1b |
12200 |
8150 |
Pre Rel-5: 0,018000 Rel-5: 0,016000 |
Pre Rel-5: 0,022212 Rel-5: 0,019744 |
Pre Rel-5: 15533 Rel-5: 17474 |
Pre Rel-5: 2 Rel-5: 2 |
Pre Rel-5: 00:00:02 Rel-5: 00:00:02 |
|
AFS 7.95 |
frames @-3dB |
7950 |
50 |
Pre Rel-5: 0,034000 Rel-5: 0,020000 |
Pre Rel-5: 0,041956 Rel-5: 0,024680 |
Pre Rel-5: 8223 Rel-5: 13979 |
Pre Rel-5: 164 Rel-5: 280 |
Pre Rel-5: 00:02:44 Rel-5: 00:04:40 |
Class1b @-3dB |
7950 |
4200 |
Pre Rel-5: 0,007800 Rel-5: 0,006800 |
Pre Rel-5: 0,009625 Rel-5: 0,008391 |
Pre Rel-5: 35844 Rel-5: 41115 |
Pre Rel-5: 9 Rel-5: 10 |
Pre Rel-5: 00:00:09 Rel-5: 00:00:10 |
|
AFS 5.9 |
frames @-3dB |
5900 |
50 |
Pre Rel-5: 0,010000 Rel-5: 0,004100 |
Pre Rel-5: 0,012340 Rel-5: 0,005059 |
Pre Rel-5: 27958 Rel-5: 68190 |
Pre Rel-5: 559 Rel-5: 1364 |
Pre Rel-5: 00:09:19 Rel-5: 00:22:44 |
Class1b @-3dB |
5900 |
3150 |
Pre Rel-5: 0.001200 Rel-5: 0,000790 |
Pre Rel-5: 0,001481 Rel-5: 0,000975 |
Pre Rel-5: 232983 Rel-5: 353897 |
Pre Rel-5: 74 Rel-5: 112 |
Pre Rel-5: 00:01:14 Rel-5: 00:01:52 |
|
AFS 4.75 |
frames @-3dB |
4750 |
50 |
Pre Rel-5: 0,003500 Rel-5: 0,001000 |
Pre Rel-5: 0,004319 Rel-5: 0,001234 |
Pre Rel-5: 79880 Rel-5: 279579 |
Pre Rel-5: 1598 Rel-5: 5592 |
Pre Rel-5: 00:26:38 Rel-5: 01:33:12 |
Class1b @-3dB |
4750 |
2800 |
Pre Rel-5: 0,000330 Rel-5: 0,000210 |
Pre Rel-5: 0,000407 Rel-5: 0,000259 |
Pre Rel-5: 847208 Rel-5: 1331327 |
Pre Rel-5: 303 Rel-5: 475 |
Pre Rel-5: 00:05:03 Rel-5: 00:07:55 |
14.5.1.2a Adjacent channel rejection – TCH/AFS in TIGHTER configuration
14.5.1.2a.1 Definition
The adjacent channel selectivity is a measure of the capability of the receiver to receive a wanted modulated signal without exceeding a given degradation due to the presence of an unwanted signal in the adjacent channel.
The adjacent channel can be adjacent in the RF spectrum or in time. There are therefore two types of adjacent channel selectivity:
1) Adjacent RF channel selectivity, which is specifically tested in this subclause.
2) Adjacent Time Slot selectivity, which is not tested in this subclause.
14.5.1.2a.2 Conformance requirement
3GPP TS 45.005 subclause 6.3.3
Table 6.3-1a: Reference interference ratio requirements in adjacent channels for Packet-switched (Normal symbol-rate), Enhanced circuit-switched data, Wideband AMR and 8-PSK modulated AMR channels, speech and associated control channels in VAMOS mode, TIGHTER – MS
Modulation of wanted signal |
||||||
GMSK |
8-PSK |
16-QAM |
32-QAM |
AQPSK |
||
for adjacent (200 kHz) interference |
C/Ia1 = |
C/Ic ‑ 18 dB, see table 2af for TIGHTER MS |
See table 2l for speech, see tables 2g, 2i, 2n and 2w for other channels, see table 2af for TIGHTER MS |
See table 2w, see table 2af for TIGHTER MS |
See table 2w, see table 2af for TIGHTER MS |
See table 2aa and 2ab |
for adjacent (400 kHz) interference |
C/Ia2 = |
C/Ic ‑ 50 dB |
C/Ic – 50 dB |
C/Ic – 48 dB |
C/Ic – 48 dB |
[Note 1] |
for adjacent (600 kHz) interference |
C/Ia3 = |
C/Ic ‑ 58 dB |
C/Ic – 58 dB |
|||
NOTE 1: The adjacent channel interference @ 400 kHz requirement (C/Ia2) does not apply to channels in VAMOS mode. |
NOTE: The C/Ia3 figure is given for information purposes and will not require testing. It was calculated for the case of an equipment with an antenna connector, operating at output power levels of +33 dBm and below. Rejection of signals at 600 kHz is specified in subclause 5.1.
3GPP TS 45.005 subclause 6.3.4
For all adjacent channel (200 kHz) requirements specified in table 2af for TIGHTER MS, the wanted signal level shall be: -75 dBm + Iar + Corr, where:
Iar = the adjacent channel (200 kHz) interference ratio according to table 2af
Corr = the correction factor for reference performance according to table 6.2-4.
14.5.1.2a.3 Test purpose
1. For TCH/AFS FER, MS shall meet the reference interference performance mentioned in 3GPP TS 45.005 sub clause 6.3.3, for adjacent-channel interference ratio mentioned in table 2af according to propagation conditions.
2. At reference adjacent-channel interference, the TCH/AFS class Ib BER shall meet the reference interference performance of table 2af in 3GPP TS 45.005.
14.5.1.2a.4 Method of test
14.5.1.2a.4.1 Initial conditions
A call is set up according to the generic call set up procedure on a TCH/AFS with an ARFCN in the mid ARFCN range, power control level set to maximum power.
The multirate configuration indicates the use of a codec set limited to 12.2 kbit/s.
The SS commands the MS to create the traffic channel loop back signalling erased frames.
The SS transmits Standard Test Signal C1 on the TCH (wanted signal).
14.5.1.2a.4.2 Procedure
a) The fading characteristic of the wanted and the unwanted signal is set to TUHigh no FH.
b) In addition to the wanted signal, the SS transmits an independent, uncorrelated interfering signal, Standard Test Signal I1 (unwanted signal).
The unwanted signal is continuous and has no fixed relationship with the bit transitions of the wanted signal.
The unwanted signal is transmitted at a nominal frequency 200 kHz above the nominal frequency of the wanted signal. Its amplitude is set according to the specified reference interference ratio as in table 2af.
c) The SS compares the data of the signal that it sends to the MS with the signal which is looped back from the receiver after demodulation and decoding, and checks the frame erasure indication.
d) The SS tests the frame erasure compliance for the TCH/AFS by examining at least the minimum number of samples of consecutive frames. The number of frame erasure events is recorded.
e) The SS determines the number of residual bit error events for the bits of the class Ib, by examining sequences of at least the minimum number of samples of consecutive bits of class Ib, Bits are only taken from those frames for which no bad frame indication was given.
f) The SS uses a Channel Mode Modify procedure to change the active codec set to 7.95 kbit/s and steps c) to e) are repeated.
g) The unwanted signal is moved to a nominal frequency 400 kHz above the nominal frequency of the wanted signal. Its amplitude is set to 3 dB below the reference interference ratio ((‑41 dB ‑ 3 dB) for 400 kHz offset), meaning 44 dB above that of the wanted signal.
h) The SS uses a Channel Mode Modify procedure to change the active codec set to 5.9 kbit/s and steps c) to e) are repeated.
i) The unwanted signal is moved to a nominal frequency 400 kHz below the nominal frequency of the wanted signal. Its amplitude is set to 3 dB below the reference interference ratio ((‑41 dB ‑ 3 dB) for 400 kHz offset), meaning 44 dB above that of the wanted signal.
j) The SS uses a Channel Mode Modify procedure to change the active codec set to 4.75 kbit/s and steps c) to e) are repeated.
Maximum/Minimum Duration of Test
Maximum: 23 minutes (GSM850, GSM900), 125 minutes (DCS1800, PCS1900).
Minimum: 14 minutes (GSM850, GSM900), 17 minutes (DCS1800, PCS1900).
14.5.1.2a.5 Test requirements
Testing the adjacent channel interference performance is performed using statistical methods that lead to an early pass/fail decision with test time significantly reduced for MS with BER/BLER not on the limit.
For more information on statistical testing of BER/BLER performance, especially the definition of the limit lines refer to Annex 6.2.
Wrong decision risk F for one single error ratio test:
Fpass = Ffail = F and F = 0.2%
Wrong decision probability D per test step:
Dpass = Dfail = D and D = 0.0085%
Parameters for limit lines:
1. D = 0.000085 wrong decision probability per test step.
2. M = 1.5 bad DUT factor
3. ne number of (error) events.
4. ns number of samples. The error rate is calculated from ne and ns.
Limit checking
Before limit checking is valid the minimum test time due to fading needs to be considered:
Testing under multipath and interference conditions requires that at least 990 wavelengths are crossed with the speed given in the fading profile. This leads to a minimum test time depending on the frequency range. No early pass/fail decision is allowed until the minimum test time due to fading has elapsed.
Table 14.5.1.2a.5-1: Minimum test times due to TU high fading conditions
Full Rate 50 km/h |
|||||||
Frequency |
0,4 |
0,7 |
0,85 |
0,9 |
1,8 |
1,9 |
GHz |
Wavelength |
0,75 |
0,43 |
0,35 |
0,33 |
0,17 |
0,16 |
m |
990 Waves |
743 |
424 |
349 |
330 |
165 |
156 |
m |
min net test time |
53 |
31 |
25 |
24 |
12 |
11 |
s @ 50km/h |
min test time |
428 |
244 |
201 |
190 |
95 |
90 |
s |
0:07:08 |
0:04:04 |
0:03:21 |
0:03:10 |
0:01:35 |
0:01:30 |
hh:mm:ss |
If the minimum test time due to multipath conditions exceeds the target test time, then the test runs for the minimum test time due to multipath conditions and the decision is done by comparing the result with the “derived test limit”. In this case early pass/fail decisions are obsolete.
If the target test time exceeds the minimum test time due to multipath conditions early pass/fail decisions can be headed for in order to accelerate test execution.
For an early decision a minimum number of (error) events is necessary.
For an early pass decision ne ≥ 1 (inclusive artificial error)
For an early fail decision ne ≥ 7
When the target test time has been reached the test is finished and a pass/fail decision can be made.
The error rates measured for different channels and under the different propagation conditions shall be tested according to the values given in table 14.5.1.2a.5-2 and 14.5.1.2a.5-3.
Table 14.5.1.2a.5-2: Statistical test limits for GSM 850 and GSM 900 Adjacent Channel Rejection
TU high no FH |
||||||||
0.4 to 0.9GHz |
frames per s |
Orig. BER |
Derived |
Target number |
Target test |
Target test time |
||
Channel |
bits per sec |
class1b per s |
requirement |
test limit |
of samples |
time (s) |
(hh:mm:ss) |
|
AFS 12.2 |
Frames |
12200 |
50 |
0,060000 |
0,074040 |
4660 |
93 |
00:01:33 |
Class1b |
12200 |
8150 |
0,017000 |
0,020978 |
16446 |
2 |
00:00:02 |
|
AFS 7.95 |
frames @-3dB |
7950 |
50 |
0,053000 |
0,065402 |
5275 |
106 |
00:01:46 |
Class1b @-3dB |
7950 |
4200 |
0,010000 |
0,012340 |
27958 |
7 |
00:00:07 |
|
AFS 5.9 |
frames @-3dB |
5900 |
50 |
0,020000 |
0,024680 |
13979 |
280 |
00:04:40 |
Class1b @-3dB |
5900 |
3150 |
0,002300 |
0,002838 |
121556 |
39 |
00:00:39 |
|
AFS 4.75 |
frames @-3dB |
4750 |
50 |
0,008200 |
0,010119 |
34095 |
682 |
00:11:22 |
Class1b @-3dB |
4750 |
2800 |
0,001100 |
0,001357 |
254162 |
91 |
00:01:31 |
Table 14.5.1.2a.5-3: Statistical test limits for DCS 1800 and PCS 1900 Adjacent Channel Rejection
TU high no FH |
||||||||
1.8 to 1.9 GHz |
frames per s |
Orig. BER |
Derived |
Target number |
Target test |
Target test time |
||
Channel |
bits per sec |
class1b per s |
requirement |
test limit |
of samples |
time (s) |
(hh:mm:ss) |
|
AFS 12.2 |
Frames |
12200 |
50 |
0,027000 |
0,033318 |
10355 |
207 |
00:03:27 |
Class1b |
12200 |
8150 |
0,016000 |
0,019744 |
17474 |
2 |
00:00:02 |
|
AFS 7.95 |
frames @-3dB |
7950 |
50 |
0,020000 |
0,024680 |
13979 |
280 |
00:04:40 |
Class1b @-3dB |
7950 |
4200 |
0,006800 |
0,008391 |
41115 |
10 |
00:00:10 |
|
AFS 5.9 |
frames @-3dB |
5900 |
50 |
0,004100 |
0,005059 |
68190 |
1364 |
00:22:44 |
Class1b @-3dB |
5900 |
3150 |
0,000790 |
0,000975 |
353897 |
112 |
00:01:52 |
|
AFS 4.75 |
frames @-3dB |
4750 |
50 |
0,001000 |
0,001234 |
279579 |
5592 |
01:33:12 |
Class1b @-3dB |
4750 |
2800 |
0,000210 |
0,000259 |
1331327 |
475 |
00:07:55 |
14.5.1.3 TCH/AHS
14.5.1.3.1 Definition
The adjacent channel selectivity is a measure of the capability of the receiver to receive a wanted modulated signal without exceeding a given degradation due to the presence of an unwanted signal in the adjacent channel.
The adjacent channel can be adjacent in the RF spectrum or in time. There are therefore two types of adjacent channel selectivity:
1) Adjacent RF channel selectivity which is specifically tested in this subclause.
2) Adjacent Time Slot selectivity, which is not tested in this subclause.
14.5.1.3.2 Conformance requirement
1. With adjacent channel interference at 200 kHz above and below the wanted signal and signal level 9 dB above the wanted signal level:
1.1 For a TUhigh faded wanted signal and a TUhigh adjacent channel interferer, the FER for TCH/AHS shall be within the requirements of table 2 in 3GPP TS 05.05; 3GPP TS 05.05, 6.3.
1.2 For a TUhigh faded wanted signal and a TUhigh adjacent channel interferer, the Class Ib and Class II RBER shall be within the requirements of table 2 in 3GPP TS 05.05; 3GPP TS 05.05, 6.3.
2. For adjacent channel interference at 400 kHz above and below the wanted signal frequency and signal level 41 dB above the wanted signal level:
2.1 For a TUhigh faded wanted signal and a TUhigh adjacent channel interferer, the FER for TCH/AHS shall be within the requirements of table 2 in 3GPP TS 05.05; 3GPP TS 05.05, 6.3.
2.2 For a TUhigh faded wanted signal and a TUhigh adjacent channel interferer, the Class Ib and Class II RBER shall be within the requirements of table 2 in 3GPP TS 05.05; 3GPP TS 05.05, 6.3.
14.5.1.3.3 Test purpose
1. To verify that with a TUhigh adjacent channel interferer at 200 kHz above and below the wanted TUhigh signal frequency and the interfering signal at a level resulting in the specified interference ratio:
1.1 Conformance requirement 1.1 is met with an allowance for the statistical significance of the test.
1.2 Conformance requirement 1.2 is met with an allowance for the statistical significance of the test.
2. To verify that with a TUhigh adjacent channel interferer at 400 kHz above and below a TUhigh wanted signal frequency and the interfering signal at a level resulting in the specified interference ratio:
2.1 Conformance requirement 2.1 is met with an allowance for the statistical significance of the test.
2.2 Conformance requirement 2.2 is met with an allowance for the statistical significance of the test.
14.5.1.3.4 Method of test
14.5.1.3.4.1 Initial conditions
A call is set up according to the generic call set up procedure on a TCH/AHS with an ARFCN in the mid ARFCN range, power control level set to maximum power.
The multirate configuration indicates the use of a codec set limited to 7,4 kbit/s.
The SS commands the MS to create the traffic channel loop back signalling erased frames.
The SS transmits Standard Test Signal C1 on the TCH (wanted signal).
14.5.1.3.4.2 Procedure
a) In addition to the wanted signal, the SS transmits an independent, uncorrelated interfering signal, Standard Test Signal I1 (unwanted signal).
The unwanted signal is continuous and has no fixed relationship with the bit transitions of the wanted signal.
The fading characteristic of the wanted and the unwanted signal is set to TUHigh.
The unwanted signal is transmitted at a nominal frequency 200 kHz above the nominal frequency of the wanted signal. The interference ratio is set to 3 dB above the reference interference ratio (‑9 dB + 3 dB), meaning that the amplitude of the interferer is set to 6 dB above that of the wanted signal.
b) The SS compares the data of the signal that it sends to the MS with the signal which is looped back from the receiver after demodulation and decoding, and checks the frame erasure indication.
c) The SS tests the frame erasure compliance for the TCH/AHS by examining at least the minimum number of samples of consecutive frames. The number of frame erasure events is recorded.
d) The SS determines the number of residual bit error events for the bits of the class Ib and class II, by examining sequences of at least the minimum number of samples of consecutive bits of class Ib and class II, Bits are only taken from those frames for which no bad frame indication was given.
e) The unwanted signal is moved to a nominal frequency 200 kHz below the nominal frequency of the wanted signal. The interference ratio is set to 3 dB above the reference interference ratio (‑9 dB + 3 dB), meaning that the amplitude of the interferer is set to 6 dB above that of the wanted signal.
f) The SS uses a Channel Mode Modify procedure to change the active codec set to 6.7 kbit/s and steps b) to d) are repeated.
g) The unwanted signal is moved to a nominal frequency 400 kHz above the nominal frequency of the wanted signal. Its amplitude is set to the reference interference ratio (‑41 dB for 400 kHz offset), meaning 41 dB above that of the wanted signal.
h) The SS uses a Channel Mode Modify procedure to change the active codec set to 5.15 kbit/s and steps b) to d) are repeated.
i) The unwanted signal is moved to a nominal frequency 400 kHz below the nominal frequency of the wanted signal. Its amplitude is set to the reference interference ratio (‑41 dB for 400 kHz offset), meaning 41 dB above that of the wanted signal.
j) The SS uses a Channel Mode Modify procedure to change the active codec set to 4.75 kbit/s and steps b) to d) are repeated.
Maximum/Minimum Duration of Test
Pre Rel-5 MS
Maximum: 27 minutes (GSM850), 26 minutes (GSM900), 14 minutes (DCS1800, PCS1900).
Minimum: 27 minutes (GSM850), 26 minutes (GSM900), 13 minutes (DCS1800), 12 minutes (PCS1900).
Rel-5 onwards MS
Maximum: 27 minutes (GSM850), 26 minutes (GSM900), 15 minutes (DCS1800, PCS1900).
Minimum: 27 minutes (GSM850), 26 minutes (GSM900), 13 minutes (DCS1800), 12 minutes (PCS1900).
14.5.1.3.5 Test requirements
Testing the adjacent channel interference performance is performed using statistical methods that lead to an early pass/fail decision with test time significantly reduced for MS with BER/BLER not on the limit.
For more information on statistical testing of BER/BLER performance, especially the definition of the limit lines refer to Annex 6.2
Wrong decision risk F for one single error ratio test:
Fpass = Ffail = F and F = 0.2%
Wrong decision probability D per test step:
Dpass = Dfail = D and D = 0.0085%
Parameters for limit lines:
1. D = 0.000085 wrong decision probability per test step.
2. M = 1.5 bad DUT factor
3. ne number of (error) events.
4. ns number of samples. The error rate is calculated from ne and ns.
Limit checking
Before limit checking is valid the minimum test time due to fading needs to be considered:
Testing under multipath and interference conditions requires that at least 990 wavelengths are crossed with the speed given in the fading profile. This leads to a minimum test time depending on the frequency range. No early pass/fail decision is allowed until the minimum test time due to fading has elapsed.
Table 14-59: Minimum test times due to TU high fading conditions
Half Rate 50 km/h |
|||||||
Frequency |
0,4 |
0,7 |
0,85 |
0,9 |
1,8 |
1,9 |
GHz |
Wavelength |
0,75 |
0,43 |
0,35 |
0,33 |
0,17 |
0,16 |
m |
990 Waves |
743 |
424 |
349 |
330 |
165 |
156 |
m |
min net test time |
53 |
31 |
25 |
24 |
12 |
11 |
s @ 50km/h |
min test time |
855 |
489 |
403 |
380 |
190 |
180 |
s |
0:14:15 |
0:08:09 |
0:06:43 |
0:06:20 |
0:03:10 |
0:03:00 |
hh.mm:ss |
If the minimum test time due to multipath conditions exceeds the target test time, then the test runs for the minimum test time due to multipath conditions and the decision is done by comparing the result with the “derived test limit”. In this case early pass/fail decisions are obsolete.
If the target test time exceeds the minimum test time due to multipath conditions early pass/fail decisions can be headed for in order to accelerate test execution.
For an early decision a minimum number of (error) events is necessary.
For an early pass decision ne ≥ 1 (inclusive artificial error)
For an early fail decision ne ≥ 7
When the target test time has been reached the test is finished and a pass/fail decision can be made.
The error rates measured for different channels and under the different propagation conditions shall be tested according to the values given in table 14-60 or 14-61. Adjacent channel rejection tests with a frequency condition noted as "@+ndB" are performed for an interference ratio n dB above the reference interference ratio (see 3GPP TS 05.05).
Table 14-60: Statistical test limits for GSM 400, GSM 700, T-GSM 810, GSM 850 and GSM 900 adjacent channel rejection
TU high no FH |
||||||||
0.4 to 0.9GHz |
frames per s |
Orig. BER |
Derived |
Target number |
Target test |
Target test time |
||
clas1b per s |
requirement |
test limit |
of samples |
time (s) |
(hh:mm:ss) |
|||
Channel |
bits per sec |
class II per s |
||||||
AHS 7.4 |
frames @+3dB |
7400 |
50 |
0,048000 |
0,059232 |
5825 |
116 |
00:01:56 |
Class1b @+3dB |
7400 |
2950 |
0,005100 |
0,006293 |
54819 |
19 |
00:00:19 |
|
Class II @+3dB |
7400 |
1400 |
0,033000 |
0,040722 |
8472 |
6 |
00:00:06 |
|
AHS 6.7 |
frames @+3dB |
6700 |
50 |
0,023000 |
0,028382 |
12156 |
243 |
00:04:03 |
Class1b @+3dB |
6700 |
2750 |
0,003900 |
0,004813 |
71687 |
26 |
00:00:26 |
|
Class II @+3dB |
6700 |
1200 |
0,036000 |
0,044424 |
7766 |
6 |
00:00:06 |
|
AHS 5.15 |
frames |
5150 |
50 |
0,033000 |
0,040722 |
8472 |
169 |
00:02:49 |
Class1b |
5150 |
2100 |
0,006000 |
0,007404 |
46596 |
22 |
00:00:22 |
|
Class II |
5150 |
600 |
0,069000 |
0,085146 |
4052 |
7 |
00:00:07 |
|
AHS 4.75 |
frames |
4750 |
50 |
Pre Rel-5: 0,025000 Rel-5: 0,018000 |
Pre Rel-5: 0,030850 Rel-5: 0,022212 |
Pre Rel-5: 11184 Rel-5: 15532 |
Pre Rel-5: 224 Rel-5: 311 |
Pre Rel-5: 00:03:44 Rel-5: 00:05:11 |
Class1b |
4750 |
2200 |
Pre Rel-5: 0,002900 Rel-5: 0,002200 |
Pre Rel-5: 0,003579 Rel-5: 0,002715 |
Pre Rel-5: 96407 Rel-5: 127081 |
Pre Rel-5: 44 Rel-5: 58 |
Pre Rel-5: 00:00:44 Rel-5: 00:00:58 |
|
Class II |
4750 |
600 |
Pre Rel-5: 0,075000 Rel-5: 0,070000 |
Pre Rel-5: 0,092550 Rel-5: 0,086380 |
Pre Rel-5: 3728 Rel-5: 3994 |
Pre Rel-5: 6 Rel-5: 7 |
Pre Rel-5: 00:00:06 Rel-5: 00:00:07 |
Table 14-61: Statistical test limits for DCS 1 800 and PCS 1 900 adjacent channel rejection
TU high no FH |
||||||||
1.8 and 1.9 GHz |
frames per s |
Orig. BER |
Derived |
Target number |
Target test |
Target test time |
||
clas1b per s |
requirement |
test limit |
of samples |
time (s) |
(hh:mm:ss) |
|||
Channel |
bits per sec |
class II per s |
||||||
AHS 7.4 |
frames @+3dB |
7400 |
50 |
Pre Rel-5: 0,054000 Rel-5: 0,049000 |
Pre Rel-5: 0,066636 Rel-5: 0,060466 |
Pre Rel-5: 5178 Rel-5: 5706 |
Pre Rel-5: 104 Rel-5: 114 |
Pre Rel-5: 00:01:44 Rel-5: 00:01:54 |
Class1b @+3dB |
7400 |
2950 |
Pre Rel-5: 0,006000 Rel-5: 0,005100 |
Pre Rel-5: 0,007404 Rel-5: 0,006293 |
Pre Rel-5: 46597 Rel-5: 54819 |
Pre Rel-5: 16 Rel-5: 19 |
Pre Rel-5: 00:00:16 Rel-5: 00:00:19 |
|
Class II @+3dB |
7400 |
1400 |
Pre Rel-5: 0,035000 Rel-5: 0,033000 |
Pre Rel-5: 0,043190 Rel-5: 0,040722 |
Pre Rel-5: 7988 Rel-5: 8472 |
Pre Rel-5: 6 Rel-5: 6 |
Pre Rel-5: 00:00:06 Rel-5. 00:00:06 |
|
AHS 6.7 |
frames @+3dB |
6700 |
50 |
0,025000 |
0,030850 |
11183 |
224 |
00:03:44 |
Class1b @+3dB |
6700 |
2750 |
0,003800 |
0,004689 |
73573 |
27 |
00:00:27 |
|
Class II @+3dB |
6700 |
1200 |
Pre Rel-5: 0,039000 Rel-5: 0,035000 |
Pre Rel-5: 0,048126 Rel-5: 0,043190 |
Pre Rel-5: 7169 Rel-5: 7988 |
Pre Rel-5: 6 Rel-5: 6 |
Pre Rel-5: 00:00:06 Rel-5: 00:00:06 |
|
AHS 5.15 |
frames |
5150 |
50 |
0,038000 |
0,046892 |
7357 |
147 |
00:02:27 |
Class1b |
5150 |
2100 |
0,006600 |
0,008144 |
42360 |
20 |
00:00:20 |
|
Class II |
5150 |
600 |
0,068000 |
0,083912 |
4111 |
7 |
00:00:07 |
|
AHS 4.75 |
frames |
4750 |
50 |
Pre Rel-5: 0,028000 Rel-5: 0,021000 |
Pre Rel-5: 0,034552 Rel-5: 0,025914 |
Pre Rel-5: 9985 Rel-5: 13313 |
Pre Rel-5: 200 Rel-5: 266 |
Pre Rel-5: 00:03:20 Rel-5: 00:04:26 |
Class1b |
4750 |
2200 |
0,002500 |
0,003085 |
111831 |
51 |
00:00:51 |
|
Class II |
4750 |
600 |
Pre Rel-5: 0,075000 Rel-5: 0,070000 |
Pre Rel-5: 0,09255 Rel-5: 0,086380 |
Pre Rel-5: 3728 Rel-5: 3994 |
Pre Rel-5: 6 Rel-5: 7 |
Pre Rel-5: 00:00:06 Rel-5: 00:00:07 |
14.5.1.3a Adjacent channel rejection – TCH/AHS in TIGHTER configuration
14.5.1.3a.1 Definition
The adjacent channel selectivity is a measure of the capability of the receiver to receive a wanted modulated signal without exceeding a given degradation due to the presence of an unwanted signal in the adjacent channel.
The adjacent channel can be adjacent in the RF spectrum or in time. There are therefore two types of adjacent channel selectivity:
1) Adjacent RF channel selectivity which is specifically tested in this subclause.
2) Adjacent Time Slot selectivity, which is not tested in this subclause.
14.5.1.3a.2 Conformance requirement
3GPP TS 45.005 subclause 6.3.3
Table 6.3-1a: Reference interference ratio requirements in adjacent channels for Packet-switched (Normal symbol-rate), Enhanced circuit-switched data, Wideband AMR and 8-PSK modulated AMR channels, speech and associated control channels in VAMOS mode, TIGHTER – MS
Modulation of wanted signal |
||||||
GMSK |
8-PSK |
16-QAM |
32-QAM |
AQPSK |
||
for adjacent (200 kHz) interference |
C/Ia1 = |
C/Ic ‑ 18 dB, see table 2af for TIGHTER MS |
See table 2l for speech, see tables 2g, 2i, 2n and 2w for other channels, see table 2af for TIGHTER MS |
See table 2w, see table 2af for TIGHTER MS |
See table 2w, see table 2af for TIGHTER MS |
See table 2aa and 2ab |
for adjacent (400 kHz) interference |
C/Ia2 = |
C/Ic ‑ 50 dB |
C/Ic – 50 dB |
C/Ic – 48 dB |
C/Ic – 48 dB |
[Note 1] |
for adjacent (600 kHz) interference |
C/Ia3 = |
C/Ic ‑ 58 dB |
C/Ic – 58 dB |
|||
NOTE 1: The adjacent channel interference @ 400 kHz requirement (C/Ia2) does not apply to channels in VAMOS mode. |
NOTE: The C/Ia3 figure is given for information purposes and will not require testing. It was calculated for the case of an equipment with an antenna connector, operating at output power levels of +33 dBm and below. Rejection of signals at 600 kHz is specified in subclause 5.1.
3GPP TS 45.005 subclause 6.3.4
For all adjacent channel (200 kHz) requirements specified in table 2af for TIGHTER MS, the wanted signal level shall be: -75 dBm + Iar + Corr, where:
Iar = the adjacent channel (200 kHz) interference ratio according to table 2af
Corr = the correction factor for reference performance according to table 6.2-4.
14.5.1.3a.3 Test purpose
1. For TCH/AHS FER, MS shall meet the reference interference performance mentioned in 3GPP TS 45.005 sub clause 6.3.3, for adjacent-channel interference ratio mentioned in table 2af according to propagation conditions.
2. At reference adjacent-channel interference, the TCH/AHS class Ib BER shall meet the reference interference performance of table 2af in 3GPP TS 45.005.
3. At reference adjacent-channel interference, the TCH/AHS class II BER shall meet the reference interference performance of table 2af in 3GPP TS 45.005.
14.5.1.3a.4 Method of test
14.5.1.3a.4.1 Initial conditions
A call is set up according to the generic call set up procedure on a TCH/AHS with an ARFCN in the mid ARFCN range, power control level set to maximum power.
The multirate configuration indicates the use of a codec set limited to 7,4 kbit/s.
The SS commands the MS to create the traffic channel loop back signalling erased frames.
The SS transmits Standard Test Signal C1 on the TCH (wanted signal).
14.5.1.3a.4.2 Procedure
a) The fading characteristic of the wanted and the unwanted signal is set to TUHigh.
b) In addition to the wanted signal, the SS transmits an independent, uncorrelated interfering signal, Standard Test Signal I1 (unwanted signal).
The unwanted signal is continuous and has no fixed relationship with the bit transitions of the wanted signal.
The unwanted signal is transmitted at a nominal frequency 200 kHz above the nominal frequency of the wanted signal. Its amplitude is set according to the specified reference interference ratio as in table 2af.
c) The SS compares the data of the signal that it sends to the MS with the signal which is looped back from the receiver after demodulation and decoding, and checks the frame erasure indication.
d) The SS tests the frame erasure compliance for the TCH/AHS by examining at least the minimum number of samples of consecutive frames. The number of frame erasure events is recorded.
e) The SS determines the number of residual bit error events for the bits of the class Ib and class II, by examining sequences of at least the minimum number of samples of consecutive bits of class Ib and class II, Bits are only taken from those frames for which no bad frame indication was given.
f) The SS uses a Channel Mode Modify procedure to change the active codec set to 6.7 kbit/s and steps c) to e) are repeated
g) The unwanted signal is moved to a nominal frequency 400 kHz above the nominal frequency of the wanted signal. Its amplitude is set to the reference interference ratio (‑41 dB for 400 kHz offset), meaning 41 dB above that of the wanted signal as defined in Table 2.
h) The SS uses a Channel Mode Modify procedure to change the active codec set to 5.15 kbit/s and steps c) to e) are repeated.
i) The unwanted signal is moved to a nominal frequency 400 kHz below the nominal frequency of the wanted signal. Its amplitude is set to the reference interference ratio (‑41 dB for 400 kHz offset), meaning 41 dB above that of the wanted signal as defined in Table 2.
j) The SS uses a Channel Mode Modify procedure to change the active codec set to 4.75 kbit/s and steps c) to e) are repeated.
Maximum/Minimum Duration of Test
Maximum: 27 minutes (GSM850), 26 minutes (GSM900), 15 minutes (DCS1800, PCS1900).
Minimum: 27 minutes (GSM850), 26 minutes (GSM900), 13 minutes (DCS1800), 12 minutes (PCS1900).
14.5.1.3a.5 Test requirements
Testing the adjacent channel interference performance is performed using statistical methods that lead to an early pass/fail decision with test time significantly reduced for MS with BER/BLER not on the limit.
For more information on statistical testing of BER/BLER performance, especially the definition of the limit lines refer to Annex 6.2
Wrong decision risk F for one single error ratio test:
Fpass = Ffail = F and F = 0.2%
Wrong decision probability D per test step:
Dpass = Dfail = D and D = 0.0085%
Parameters for limit lines:
1. D = 0.000085 wrong decision probability per test step.
2. M = 1.5 bad DUT factor
3. ne number of (error) events.
4. ns number of samples. The error rate is calculated from ne and ns.
Limit checking
Before limit checking is valid the minimum test time due to fading needs to be considered:
Testing under multipath and interference conditions requires that at least 990 wavelengths are crossed with the speed given in the fading profile. This leads to a minimum test time depending on the frequency range. No early pass/fail decision is allowed until the minimum test time due to fading has elapsed.
Table 14.5.1.3a.5-1: Minimum test times due to TU high fading conditions
Half Rate 50 km/h |
|||||||
Frequency |
0,4 |
0,7 |
0,85 |
0,9 |
1,8 |
1,9 |
GHz |
Wavelength |
0,75 |
0,43 |
0,35 |
0,33 |
0,17 |
0,16 |
m |
990 Waves |
743 |
424 |
349 |
330 |
165 |
156 |
m |
min net test time |
53 |
31 |
25 |
24 |
12 |
11 |
s @ 50km/h |
min test time |
855 |
489 |
403 |
380 |
190 |
180 |
s |
0:14:15 |
0:08:09 |
0:06:43 |
0:06:20 |
0:03:10 |
0:03:00 |
hh.mm:ss |
If the minimum test time due to multipath conditions exceeds the target test time, then the test runs for the minimum test time due to multipath conditions and the decision is done by comparing the result with the “derived test limit”. In this case early pass/fail decisions are obsolete.
If the target test time exceeds the minimum test time due to multipath conditions early pass/fail decisions can be headed for in order to accelerate test execution.
For an early decision a minimum number of (error) events is necessary.
For an early pass decision ne ≥ 1 (inclusive artificial error)
For an early fail decision ne ≥ 7
When the target test time has been reached the test is finished and a pass/fail decision can be made.
The error rates measured for different channels and under the different propagation conditions shall be tested according to the values given in table 14.5.1.3a.5-2 and 14.5.1.3a.5-3.
Table 14.5.1.3a.5-2: Statistical test limits for GSM 850 and GSM 900 Adjacent Channel Rejection
TU high no FH |
||||||||
0.4 to 0.9GHz |
frames per s |
Orig. BER |
Derived |
Target number |
Target test |
Target test time |
||
class 1b per s |
require-ment |
test limit |
of samples |
time (s) |
(hh:mm:ss) |
|||
Channel |
bits per sec |
class II per s |
||||||
AHS 7.4 |
frames @+3dB |
7400 |
50 |
0,048000 |
0,059232 |
5825 |
116 |
00:01:56 |
Class1b @+3dB |
7400 |
2950 |
0,005100 |
0,006293 |
54819 |
19 |
00:00:19 |
|
Class II @+3dB |
7400 |
1400 |
0,033000 |
0,040722 |
8472 |
6 |
00:00:06 |
|
AHS 6.7 |
frames @+3dB |
6700 |
50 |
0,023000 |
0,028382 |
12156 |
243 |
00:04:03 |
Class1b @+3dB |
6700 |
2750 |
0,003900 |
0,004813 |
71687 |
26 |
00:00:26 |
|
Class II @+3dB |
6700 |
1200 |
0,036000 |
0,044424 |
7766 |
6 |
00:00:06 |
|
AHS 5.15 |
Frames |
5150 |
50 |
0,033000 |
0,040722 |
8472 |
169 |
00:02:49 |
Class1b |
5150 |
2100 |
0,006000 |
0,007404 |
46596 |
22 |
00:00:22 |
|
Class II |
5150 |
600 |
0,069000 |
0,085146 |
4052 |
7 |
00:00:07 |
|
AHS 4.75 |
Frames |
4750 |
50 |
0,018000 |
0,022212 |
15532 |
311 |
00:05:11 |
Class1b |
4750 |
2200 |
0,002200 |
0,002715 |
127081 |
58 |
00:00:58 |
|
Class II |
4750 |
600 |
0,070000 |
0,086380 |
3994 |
7 |
00:00:07 |
Table 14.5.1.3a.5-3: Statistical test limits for DCS 1800 and PCS 1900 Adjacent Channel Rejection
TU high no FH |
||||||||
1.8 and 1.9 GHz |
frames per s |
Orig. BER |
Derived |
Target number |
Target test |
Target test time |
||
class1b per s |
require-ment |
test limit |
of samples |
time (s) |
(hh:mm:ss) |
|||
Channel |
bits per sec |
class II per s |
||||||
AHS 7.4 |
frames @+3dB |
7400 |
50 |
0,049000 |
0,060466 |
5706 |
114 |
00:01:54 |
Class1b @+3dB |
7400 |
2950 |
0,005100 |
0,006293 |
54819 |
19 |
00:00:19 |
|
Class II @+3dB |
7400 |
1400 |
0,033000 |
0,040722 |
8472 |
6 |
00:00:06 |
|
AHS 6.7 |
frames @+3dB |
6700 |
50 |
0,025000 |
0,030850 |
11183 |
224 |
00:03:44 |
Class1b @+3dB |
6700 |
2750 |
0,003800 |
0,004689 |
73573 |
27 |
00:00:27 |
|
Class II @+3dB |
6700 |
1200 |
0,035000 |
0,043190 |
7988 |
6 |
00:00:06 |
|
AHS 5.15 |
Frames |
5150 |
50 |
0,038000 |
0,046892 |
7357 |
147 |
00:02:27 |
Class1b |
5150 |
2100 |
0,006600 |
0,008144 |
42360 |
20 |
00:00:20 |
|
Class II |
5150 |
600 |
0,068000 |
0,083912 |
4111 |
7 |
00:00:07 |
|
AHS 4.75 |
Frames |
4750 |
50 |
0,021000 |
0,025914 |
13313 |
266 |
00:04:26 |
Class1b |
4750 |
2200 |
0,002500 |
0,003085 |
111831 |
51 |
00:00:51 |
|
Class II |
4750 |
600 |
0,070000 |
0,086380 |
3994 |
7 |
00:00:07 |
14.5.1.4 O-TCH/AHS
14.5.1.4.1 Definition
–
14.5.1.4.2 Conformance requirement
For 8-PSK modulated channels, speech channels (AMR and AMR-WB), the minimum interference ratio for which the reference performance for co channel interference (C/Ic) shall be met is specified in table 2k
The corresponding interference ratio for adjacent channel interference shall be:
Modulation of wanted signal |
GMSK |
8-PSK |
||||
‑ |
for adjacent (200 kHz) interference |
C/Ia1 |
= |
C/Ic ‑ 18 dB |
See table 2l for speech, see tables 2f, 2g, 2h, 2i and 2n for other channels |
|
‑ |
for adjacent (400 kHz) interference |
C/Ia2 |
= |
C/Ic ‑ 50 dB |
C/Ic –50 dB |
|
‑ |
for adjacent (600 kHz) interference |
C/Ia3 |
= |
C/Ic ‑ 58 dB |
C/Ic –58 dB |
For 8-PSK modulated speech channels (AMR and AMR-WB), ECSD channels and 8-PSK modulated packet-switched channels, the wanted input signal level shall be: – 93 dBm + Ir + Corr, where:
Ir = the interference ratio according to tables 2b and 2c for packets switched channels, tables 2d and 2e for ECSD and table 2k for speech (AMR and AMR-WB) and associated control channels.
Corr = the correction factor for reference performance according to subclause 6.2
For adjacent channel performance, the wanted input signal level shall be set to the value calculated using the formulas above for co channel performance.
For all classes of MS supporting 8-PSK speech channels, an additional +2 dB adjustment applies for 8-PSK modulated speech channels.
The reference performance is the same as defined in subclause 6.2
The reference performance shall be:
For speech channels (O-TCH/AHSy) FER £ 1%
3GPP TS 45.005, subclauses 6.2, 6.3.
14.5.1.4.3 Test purpose
To verify that the MS does not exceed conformance requirement for FER and class 1b RBER under TU50 propagation conditions with an allowance for the statistical significance of the test, for channel combinations O-TCH/AHS7.4, O-TCH/AHS6.7.
14.5.1.4.4 Method of test
14.5.1.4.4.1 Initial conditions
A call is set up according to the generic call set up procedure on a O-TCH/AHS with an ARFCN in the mid ARFCN range, power control level set to maximum power. RADIO_LINK_TIMEOUT is set to maximum.
The multirate configuration indicates the use of a codec set limited to 7,4 kbit/s.
The SS transmits Standard Test Signal C1 on the traffic channel (wanted signal).
The SS commands the MS to create the traffic channel loop back, signalling erased frames (subclause 36).
14.5.1.4.4.2 Procedure
a) In addition to the wanted signal, the SS produces an independent, uncorrelated interfering signal, Standard Test Signal I1 (unwanted signal) at a nominal frequency 400KHz above that of the wanted signal. The unwanted signal is continuous and has no fixed relationship with the bit transitions of the wanted signal.
b) The fading characteristic of the wanted and the interfering signals are set to TU50.
c) The SS sets the level of the interfering signal to –27dBm.
d) The SS sets the level of the wanted signal to –77dBm.
e) The SS determines the number of residual bit error events for the bits of the class Ib, by examining sequences of at least the minimum number of samples of consecutive bits of class Ib. Bits are only taken from those frames not signalled as erased.
f) The SS also determines the frame erasure events by examining sequences of at least the minimum number of samples of consecutive frames and assuming a frame is received successfully, if it is not signalled as erased.
g) The SS moves the interfering signal to a nominal frequency 200KHz below that of the wanted signal.
h) The SS sets the level of the interfering signal to –73dBm.
i) The SS uses a Channel Mode Modify procedure to change the active codec set to 6,7 kbit/s.
j) The SS sets the level of the wanted signal to that indicated by Clev in table 14.5.1.4-2 or 14.5.1.4-3.
k) Steps e) to f) are repeated.
Maximum/Minimum Duration of Test
Maximum: 19 minutes (GSM850), 19 minutes (GSM900), 19 minutes (DCS1800), 19 minutes (PCS1900).
Minimum: 14 minutes (GSM850), 13 minutes (GSM900), 7 minutes (DCS1800), 6 minutes (PCS1900).
14.5.1.4.5 Test requirements
Testing should be performed using statistical methods that lead to an early pass/fail decision with test time significantly reduced for MS with FER/BER not on the limit.
For more information on statistical testing of BER/BLER performance, especially the definition of limit lines refer to Annex 7.
Wrong decision risk F for one single error rate test:
Fpass = Ffail = F and F = 0.2%
Wrong decision probability D per test step:
Dpass = Dfail = D and D = 0.0085%
Parameters for limit lines:
1. D = 0.000085 wrong decision probability per test step.
2. M = 1.5 bad DUT factor
3. ne number of (error) events. This parameter is the x‑ordinate in figure A7.1.3.1.
4. ns number of samples. The error rate is calculated from ne and ns.
Limit checking
Before limit checking is valid the minimum test time due to fading needs to be considered:
Testing under multipath and interference conditions requires that at least 990 wavelengths are crossed with the speed given in the fading profile. This leads to a minimum test time depending on the frequency range. No early pass/fail decision is allowed until the minimum test time due to fading has elapsed.
Table 14.5.1.4-1: Minimum test times due to TU high fading conditions
Half Rate 50 km/h |
|||||
Frequency |
0,85 |
0,9 |
1,8 |
1,9 |
GHz |
Wavelength |
0,35 |
0,33 |
0,17 |
0,16 |
m |
min test time |
403 |
380 |
190 |
180 |
s |
0:06:43 |
0:06:20 |
0:03:10 |
0:03:00 |
If the minimum test time due to multipath conditions exceeds the target test time, then the test runs for the minimum test time due to multipath conditions and the decision is made by comparing the result with the “derived test limit”. In this case early pass/fail decisions are obsolete.
If the target test time exceeds the minimum test time due to multipath conditions early pass/fail decisions can be headed for in order to accelerate test execution.
For an early decision a minimum number of (error) events is necessary.
For an early pass decision ne ≥ 1 (inclusive artificial error)
For an early fail decision ne ≥ 7
When the target test time has been reached the test is finished and a pass/fail decision can be made.
The error rate measured in this test shall be tested according to the values given in tables 14.5.1.4-2 and 14.5.1.4.3
Table 14.5.1.4-2: Statistical test limits for T-GSM 810, GSM 850 and GSM 900 O-TCH/AHS adj-chan interference
TU50 / No FH |
||||||||
0.8 to 0.9GHz |
Clev (dBm) |
Samples per second |
Orig. BER requirement |
Derived test limit |
Target number of samples |
Target test time (s) |
Target test time (hh:mm:ss) |
|
O-TCH/ AHS 7.4 |
Frames |
n/a |
50 |
0,010000 |
0,012340 |
27958 |
560 |
00:09:20 |
Class1b |
3950 |
0,001500 |
0.001851 |
186385 |
48 |
00:00:48 |
||
O-TCH/ AHS 6.7 |
Frames |
-77.5 |
50 |
0,010000 |
0,012340 |
27958 |
560 |
00:09:20 |
Class1b |
3950 |
0,001500 |
0.001851 |
186385 |
48 |
00:00:48 |
Table 14.5.1.4-3: Statistical test limits for DCS 1 800 and PCS 1 900 O-TCH/AHS adj-chan interference
TU50 / No FH |
||||||||
1.8 to 1.9GHz |
Clev (dBm) |
Samples per second |
Orig. BER requirement |
Derived test limit |
Target number of samples |
Target test time (s) |
Target test time (hh:mm:ss) |
|
O-TCH/ AHS 7.4 |
Frames |
n/a |
50 |
0,010000 |
0,012340 |
27958 |
560 |
00:09:20 |
Class1b |
3950 |
0,001700 |
0.002098 |
164442 |
42 |
00:00:42 |
||
O-TCH/ AHS 6.7 |
Frames |
-78.0 |
50 |
0,010000 |
0,012340 |
27958 |
560 |
00:09:20 |
Class1b |
3950 |
0,001500 |
0.001851 |
186385 |
48 |
00:00:48 |
14.5.1.5 O-TCH/WFS
14.5.1.5.1 Definition
The adjacent channel selectivity is a measure of the capability of the receiver to receive a wanted modulated signal without exceeding a given degradation due to the presence of an unwanted signal in the adjacent channel.
The adjacent channel can be adjacent in the RF spectrum or in time. There are therefore two types of adjacent channel selectivity:
1) Adjacent RF channel selectivity, which is specifically tested in this subclause.
2) Adjacent Time Slot selectivity, which is not tested in this subclause.
14.5.1.5.2 Conformance requirement
The reference interference performance (for co channel, C/Ic, or adjacent channel, C/Ia) in terms of frame erasure, bit error or residual bit error rates (whichever appropriate) is specified in table 2, according to the type of channel and the propagation condition. The actual interference ratio is defined as the interference ratio for which this performance is met. The actual interference ratio shall be less than a specified limit, called the reference interference ratio.
For equipment supporting 8-PSK, and for MS indicating support for Downlink Advanced Receiver Performance – phase I (see 3GPP TS 24.008), the applicable requirements in table 2a, 2b, 2c, 2d, 2e, 2f, 2g, 2h, 2i, 2j, 2k, 2l, 2m, 2n and 2p apply for both GMSK and 8-PSK modulated interfering signals. The corresponding interference ratio for adjacent channel interference shall be:
Modulation of wanted signal |
GMSK |
8-PSK |
||||
‑ |
for adjacent (200 kHz) interference |
C/Ia1 |
= |
C/Ic ‑ 18 dB |
See table 2l for speech, see tables 2f, 2g, 2h, 2i and 2n for other channels |
|
‑ |
for adjacent (400 kHz) interference |
C/Ia2 |
= |
C/Ic ‑ 50 dB |
C/Ic –50 dB |
|
‑ |
for adjacent (600 kHz) interference |
C/Ia3 |
= |
C/Ic ‑ 58 dB |
C/Ic –58 dB |
NOTE: The C/Ia3 figure is given for information purposes and will not require testing. It was calculated for the case of an equipment with an antenna connector, operating at output power levels of +33 dBm and below. Rejection of signals at 600 kHz is specified in subclause 5.1.
For 8-PSK modulated speech channels (AMR and AMR-WB), ECSD channels and 8-PSK modulated packet-switched channels, the wanted input signal level shall be: – 93 dBm + Ir + Corr, where:
Ir = the interference ratio according to tables 2b and 2c for packets switched channels, tables 2d and 2e for ECSD and table 2k for speech (AMR and AMR-WB) and associated control channels.
Corr = the correction factor for reference performance according to subclause 6.2
The levels shall be corrected by the following values:
MS, 8-PSK modulated signals |
|
for GSM 400, GSM 900, GSM 850 and GSM 700 small MS |
0 dB |
for other GSM 400, GSM 900, GSM 850 and GSM 700 MS |
-2 dB |
for DCS 1 800 and PCS 1900 class 1 or class 2 MS |
0 dB |
for other DCS 1 800 and PCS 1900 MS |
-2 dB |
For GMSK modulated speech channels for wideband AMR, and for 8-PSK modulated speech channels for AMR, associated control channels and in band signalling, the minimum input signal level for which the reference performance shall be met is specified in table 1f and 1g respectively for normal BTS, according to the type of channel and the propagation condition. The reference performance shall be:
‑ |
for speech channels (O-TCH/AHSy, O-TCH/WFSy, O-TCH/WHSy) |
FER |
: |
£ 1% |
For other equipment than normal BTS, the levels shall be corrected by the values in the table below, describing the reference performance level correction factors for packet switched channels. Furthermore, for all classes of MS supporting 8-PSK speech channels, an additional +2 dB adjustment applies for 8-PSK modulated speech channels. For T-GSM 810 the requirements for GSM 900 shall apply, apart for those parameters for which a separate requirement exists.
3GPP 45.005 clauses 2, 6.2 and 6.3
NOTE: The tables 1 and 2 mentioned above can be found in 3GPP 45.005 clause 6.7
14.5.1.5.3 Test purpose
1 To verify that with a TUhigh adjacent channel interferer at 200 kHz above and below the wanted TUhigh signal frequency and the interfering signal at a level resulting in the specified interference ratio the MS does not exceed conformance requirements in tables 14.5.1.5-2/3 with an allowance for the statistical significance of the test.
2. To verify that with a TUhigh adjacent channel interferer at 400 kHz above and below a TUhigh wanted signal frequency and the interfering signal at a level resulting in the specified interference ratio the MS does not exceed conformance requirements in tables 14.5.1.5-2/3 with an allowance for the statistical significance of the test.
14.5.1.5.4 Method of test
14.5.1.5.4.1 Initial conditions
A call is set up according to the generic call set up procedure on a O-TCH/WFS with an ARFCN in the mid ARFCN range, power control level set to maximum power.
The multirate configuration indicates the use of a codec set limited to 15.85 kbit/s.
The SS commands the MS to create the traffic channel loop back signalling erased frames.
The SS transmits Standard Test Signal C1 on the O-TCH (wanted signal) with an amplitude of -93 dBm + Ir + Corr +2 dB, where Ir equals C/Ic in table.14.5.1.5-2/3 and the values for Corr are as stated above.
14.5.1.5.4.2 Procedure
a) In addition to the wanted signal, the SS transmits an independent, uncorrelated interfering signal, Standard Test Signal I1 (unwanted signal).
The unwanted signal is continuous and has no fixed relationship with the bit transitions of the wanted signal.
The fading characteristic of the wanted and the unwanted signal is set to TUHigh.
The unwanted signal is transmitted at a nominal frequency of 200 kHz above the nominal frequency of the wanted signal. The interference ratio is set to C/Ia1 from table 14.5.1.5-4.
b) The SS compares the data of the signal that it sends to the MS with the signal which is looped back from the receiver after demodulation and decoding, and checks the frame erasure indication.
c) The SS tests the frame erasure compliance for the O-TCH/WFS by examining at least the minimum number of samples of consecutive frames. The number of frame erasure events is recorded.
d) The SS determines the number of residual bit error events for the bits of the class Ib, by examining sequences of at least the minimum number of samples of consecutive bits of class Ib, Bits are only taken from those frames for which no bad frame indication was given.
e) The unwanted signal is moved to a nominal frequency 200 kHz below the nominal frequency of the wanted signal.
f) The SS uses a Channel Mode Modify procedure to change the active codec set to 12.65 kbit/s and the wanted signal level is set accordingly. The interference ratio is set to C/Ia1 from table 14.5.1.5-4 and steps b) to d) are repeated.
g) The unwanted signal is moved to a nominal frequency 400 kHz above the nominal frequency of the wanted signal.
h) The SS uses a Channel Mode Modify procedure to change the active codec set to 8.85 kbit/s and the wanted signal level is set accordingly. The interference ratio is set to (C/Ic – 50dB), i.e. the amplitude of the unwanted signal is set to (50 dB – C/Ic) above that of the wanted signal, (C/Ic is the co-channel interference ratio from table 14.5.1.5-2 and 14.5.1.5-3). Steps b) to d) are repeated.
i) The unwanted signal is moved to a nominal frequency 400 kHz below the nominal frequency of the wanted signal.
j) The SS uses a Channel Mode Modify procedure to change the active codec set to 6.60 kbit/s and the wanted signal level is set accordingly. The interference ratio is set to (C/Ic – 50dB), i.e. the amplitude of the unwanted signal is set to (50 dB – C/Ic) above that of the wanted signal, (C/Ic is the co-channel interference ratio from table 14.5.1.5-2 and 14.5.1.5-3). Steps b) to d) are repeated.
Maximum/Minimum Duration of Test
Maximum: 14 minutes (GSM700, T-GSM 810, GSM850 and GSM900), 7 minutes (DCS1800 and PCS1900).
Minimum: 14 minutes (GSM700, T-GSM 810, GSM850 and GSM900), 7 minutes (DCS1800 and PCS1900).
14.5.1.5.5 Test requirements
Testing the adjacent channel interference performance is performed using statistical methods that lead to an early pass/fail decision with test time significantly reduced for MS with BER/BLER not on the limit.
For more information on statistical testing of BER/BLER performance, especially the definition of the limit lines refer to Annex 6.2
Wrong decision risk F for one single error ratio test:
Fpass = Ffail = F and F = 0.2%
Wrong decision probability D per test step:
Dpass = Dfail = D and D = 0.0085%
Parameters for limit lines:
1. D = 0.000085 wrong decision probability per test step.
2. M = 1.5 bad DUT factor
3. ne number of (error) events.
4. ns number of samples. The error rate is calculated from ne and ns.
Limit checking
Before limit checking is valid the minimum test time due to fading needs to be considered:
Testing under multipath and interference conditions requires that at least 990 wavelengths are crossed with the speed given in the fading profile. This leads to a minimum test time depending on the frequency range. No early pass/fail decision is allowed until the minimum test time due to fading has elapsed.
Table 14.5.1.5-1: Minimum test times due to TU high fading conditions
Full Rate 50 km/h |
|||||||
Frequency |
0,4 |
0,7 |
0,85 |
0,9 |
1,8 |
1,9 |
GHz |
Wavelength |
0,75 |
0,43 |
0,35 |
0,33 |
0,17 |
0,16 |
m |
990 Waves |
743 |
424 |
349 |
330 |
165 |
156 |
m |
min net test time |
53 |
31 |
25 |
24 |
12 |
11 |
s @ 50km/h |
min test time |
428 |
244 |
201 |
190 |
95 |
90 |
s |
0:07:08 |
0:04:04 |
0:03:21 |
0:03:10 |
0:01:35 |
0:01:30 |
hh:mm:ss |
If the minimum test time due to multipath conditions exceeds the target test time, then the test runs for the minimum test time due to multipath conditions and the decision is done by comparing the result with the “derived test limit”. In this case early pass/fail decisions are obsolete.
If the target test time exceeds the minimum test time due to multipath conditions early pass/fail decisions can be headed for in order to accelerate test execution.
For an early decision a minimum number of (error) events is necessary.
For an early pass decision ne ≥ 1 (inclusive artificial error)
For an early fail decision ne ≥ 7
When the target test time has been reached the test is finished and a pass/fail decision can be made.
The error rates measured for different channels and under the different propagation conditions, under any combination of normal and extreme test voltages and ambient temperatures, shall be tested according to the values given in table 14.5.1.5-2 or 14.5.1.5-3. Adjacent channel rejection tests with a frequency condition noted as "@‑ndB" are performed for an interference ratio n dB below the reference interference ratio (see 3GPP TS 05.05). Where an entry in the table is ‘-‘, this combination should not be tested.
Table 14.5.1.5-2: Statistical test limits for GSM 710, T-GSM 810, GSM 850 and GSM 900 adjacent channel rejection
TU high no FH, |
||||||||
0.4 to 0.9GHz |
C/Ic (dB) |
samples |
Orig. BER/FER requirement |
Derived test limit |
Target number of samples |
Target test time (s) |
Target test time (hh:mm:ss) |
|
WFS15.85 |
frames |
13.5 |
50 |
0,010000 |
0,012340 |
27958 |
560 |
00:09:20 |
Class1b |
12250 |
0,004500 |
0,005553 |
62129 |
5 |
00:00:05 |
||
WFS12.65 |
frames |
11.5 |
50 |
0,010000 |
0,012340 |
27958 |
560 |
00:09:20 |
Class1b |
9050 |
0,003500 |
0,004319 |
79880 |
9 |
00:00:09 |
||
WFS 8.85 |
frames |
10.5 |
50 |
0,010000 |
0,012340 |
27958 |
560 |
00:09:20 |
Class1b |
5650 |
0,003500 |
0,004319 |
79880 |
15 |
00:00:15 |
||
WFS 6.60 |
frames |
9.5 |
50 |
0,010000 |
0,012340 |
27958 |
560 |
00:09:20 |
Class1b |
3900 |
0,001500 |
0,001851 |
186386 |
48 |
00:00:48 |
Table 14.5.1.5-3: Statistical test limits for DCS 1800 and PCS 1900 adjacent channel rejection
TU high no FH |
||||||||
1.8 to 1.9GHz |
C/Ic (dB) |
samples |
Orig. BER/FER requirement |
Derived test limit |
Target number of samples |
Target test time (s) |
Target test time |
|
WFS15.85 |
frames |
12.0 |
50 |
0,010000 |
0,012340 |
27958 |
560 |
00:09:20 |
Class1b |
12250 |
0,005000 |
0,006170 |
55916 |
5 |
00:00:05 |
||
WFS12.65 |
frames |
10.5 |
50 |
0,010000 |
0,012340 |
27958 |
560 |
00:09:20 |
Class1b |
9050 |
0,003600 |
0,004442 |
77668 |
9 |
00:00:09 |
||
WFS 8.85 |
frames |
9.0 |
50 |
0,010000 |
0,012340 |
27958 |
560 |
00:09:20 |
Class1b |
5650 |
0,004200 |
0,005183 |
66564 |
12 |
00:00:12 |
||
WFS 6.60 |
frames |
8.0 |
50 |
0,010000 |
0,012340 |
27958 |
560 |
00:09:20 |
Class1b |
3900 |
0,002000 |
0,002468 |
139790 |
36 |
00:00:36 |
Table 14.5.1.5-4: Adjacent channel interference ratio C/Ia1 for 8PSK-modulated WB-AMR channels
Type of Channel |
GSM 850 and GSM 900 |
DCS 1 800 & PCS 1 900 |
|
Propagation condition |
|||
TU50(no FH) |
TU50(no FH) |
||
O-TCH/ WFS15.85 |
dB |
-5 |
-5.5 |
O-TCH/ WFS12.65 |
dB |
-7 |
-7.5 |
14.5.1.6 Adjacent channel interference O-TCH/WHS
14.5.1.6.1 Definition
–
14.5.1.6.2 Conformance requirement
For 8-PSK modulated channels, speech channels (AMR and AMR-WB), the minimum interference ratio for which the reference performance for co channel interference (C/Ic) shall be met is specified in table 2k
The corresponding interference ratio for adjacent channel interference shall be:
Modulation of wanted signal |
GMSK |
8-PSK |
||||
‑ |
for adjacent (200 kHz) interference |
C/Ia1 |
= |
C/Ic ‑ 18 dB |
See table 2l for speech, see tables 2f, 2g, 2h, 2i and 2n for other channels |
|
‑ |
for adjacent (400 kHz) interference |
C/Ia2 |
= |
C/Ic ‑ 50 dB |
C/Ic –50 dB |
|
‑ |
for adjacent (600 kHz) interference |
C/Ia3 |
= |
C/Ic ‑ 58 dB |
C/Ic –58 dB |
For 8-PSK modulated speech channels (AMR and AMR-WB), ECSD channels and 8-PSK modulated packet-switched channels, the wanted input signal level shall be: – 93 dBm + Ir + Corr, where:
Ir = the interference ratio according to tables 2b and 2c for packets switched channels, tables 2d and 2e for ECSD and table 2k for speech (AMR and AMR-WB) and associated control channels.
Corr = the correction factor for reference performance according to subclause 6.2
The levels shall be corrected by the following values:
MS, 8-PSK modulated signals |
|
for GSM 400, GSM 900, GSM 850 and GSM 700 small MS |
0 dB |
for other GSM 400, GSM 900, GSM 850 and GSM 700 MS |
-2 dB |
for DCS 1 800 and PCS 1900 class 1 or class 2 MS |
0 dB |
for other DCS 1 800 and PCS 1900 MS |
-2 dB |
For adjacent channel performance, the wanted input signal level shall be set to the value calculated using the formulas above for co channel performance.
For all classes of MS supporting 8-PSK speech channels, an additional +2 dB adjustment applies for 8-PSK modulated speech channels.
The reference performance is the same as defined in subclause 6.2
The reference performance shall be:
For speech channels (O-TCH/WHSy) FER £ 1%
3GPP TS 45.005, subclauses 6.2, 6.3.
14.5.1.6.3 Test purpose
To verify that the MS does not exceed conformance requirement for FER and class 1b RBER under TU50 propagation conditions with an allowance for the statistical significance of the test, for channel combinations O-TCH/WHS8.85, O-TCH/WHS6.6.
14.5.1.6.4 Method of test
14.5.1.6.4.1 Initial conditions
A call is set up according to the generic call set up procedure on a O-TCH/WHS with an ARFCN in the mid ARFCN range, power control level set to maximum power. RADIO_LINK_TIMEOUT is set to maximum.
The multirate configuration indicates the use of a codec set limited to 8,85 kbit/s.
The SS transmits Standard Test Signal C1 on the traffic channel (wanted signal) with an amplitude of -93 dBm + Ir + Corr +2 dB, where Ir equals C/Ic in table. 14.5.1.6-2 and the values for Corr are as stated above.
The SS commands the MS to create the traffic channel loop back, signalling erased frames (subclause 36).
14.5.1.6.4.2 Procedure
a) In addition to the wanted signal, the SS produces an independent, uncorrelated interfering signal, Standard Test Signal I1 (unwanted signal) at a nominal frequency 400KHz above that of the wanted signal. The unwanted signal is continuous and has no fixed relationship with the bit transitions of the wanted signal.
b) The fading characteristic of the wanted and the interfering signals are set to TU50.
c) The interference ratio is set to (C/Ic – 50dB), i.e. the amplitude of the unwanted signal is set to (50 dB – C/Ic) above that of the wanted signal, (C/Ic is the co-channel interference ratio from table 14.5.1.6-2).
d) The SS determines the number of residual bit error events for the bits of the class Ib, by examining sequences of at least the minimum number of samples of consecutive bits of class Ib. Bits are only taken from those frames not signalled as erased.
e) The SS also determines the frame erasure events by examining sequences of at least the minimum number of samples of consecutive frames and assuming a frame is received successfully, if it is not signalled as erased.
f) The SS moves the interfering signal to a nominal frequency 200KHz below that of the wanted signal.
g) The SS uses a Channel Mode Modify procedure to change the active codec set to 6,6 kbit/s.
h) The SS sets the level of the wanted signal accordingly.
i) The interference ratio is set to C/Ia1 from table 14.5.1.6-2.
j) Steps d) to e) are repeated.
Maximum/Minimum Duration of Test
Maximum: 19 minutes (GSM850), 19 minutes (GSM900), 19 minutes (DCS1800), 19 minutes (PCS1900).
Minimum: 14 minutes (GSM850), 13 minutes (GSM900), 7 minutes (DCS1800), 6 minutes (PCS1900).
14.5.1.6.5 Test requirements
Testing should be performed using statistical methods that lead to an early pass/fail decision with test time significantly reduced for MS with FER/BER not on the limit.
For more information on statistical testing of BER/BLER performance, especially the definition of limit lines refer to Annex 7.
Wrong decision risk F for one single error rate test:
Fpass = Ffail = F and F = 0.2%
Wrong decision probability D per test step:
Dpass = Dfail = D and D = 0.0085%
Parameters for limit lines:
1. D = 0.000085 wrong decision probability per test step.
2. M = 1.5 bad DUT factor
3. ne number of (error) events. This parameter is the x‑ordinate in figure A7.1.3.1.
4. ns number of samples. The error rate is calculated from ne and ns.
Limit checking
Before limit checking is valid the minimum test time due to fading needs to be considered:
Testing under multipath and interference conditions requires that at least 990 wavelengths are crossed with the speed given in the fading profile. This leads to a minimum test time depending on the frequency range. No early pass/fail decision is allowed until the minimum test time due to fading has elapsed.
Table 14.5.1.6-1: Minimum test times due to TU high fading conditions
Half Rate 50 km/h |
|||||
Frequency |
0,85 |
0,9 |
1,8 |
1,9 |
GHz |
Wavelength |
0,35 |
0,33 |
0,17 |
0,16 |
M |
min test time |
403 |
380 |
190 |
180 |
S |
0:06:43 |
0:06:20 |
0:03:10 |
0:03:00 |
If the minimum test time due to multipath conditions exceeds the target test time, then the test runs for the minimum test time due to multipath conditions and the decision is made by comparing the result with the “derived test limit”. In this case early pass/fail decisions are obsolete.
If the target test time exceeds the minimum test time due to multipath conditions early pass/fail decisions can be headed for in order to accelerate test execution.
For an early decision a minimum number of (error) events is necessary.
For an early pass decision ne ≥ 1 (inclusive artificial error)
For an early fail decision ne ≥ 7
When the target test time has been reached the test is finished and a pass/fail decision can be made.
The error rate measured in this test shall be tested according to the values given in tables 14.5.1.6-2 and 14.5.1.6.3
Table 14.5.1.6-2: Statistical test limits for GSM 850 and GSM 900 O-TCH/WHS adj-chan interference
TU high no FH |
C/Ia1 (dB) |
C/Ic (dB) |
Samples per second |
Orig. BER requirement |
Derived test limit |
Target number of samples |
Target test time (s) |
Target test time (hh:mm:ss) |
|
O-TCH/ WHS 8.85 |
Frames |
– |
15.0 |
50 |
0,010000 |
0,012340 |
27958 |
560 |
00:09:20 |
Class1b |
5650 |
0,001100 |
0,001357 |
254237 |
45 |
00:00:45 |
|||
O-TCH/ WHS 6.60 |
Frames |
-5.0 |
13.5 |
50 |
0,010000 |
0,012340 |
27958 |
560 |
00:09:20 |
Class1b |
3900 |
0,001500 |
0,001851 |
186386 |
48 |
00:00:48 |
Table 14.5.1.6-3: Statistical test limits for DCS 1 800 and PCS 1 900 O-TCH/WHS adj-chan interference
TU high no FH |
C/Ia1 (dB) |
C/Ic (dB) |
Samples per second |
Orig. BER requirement |
Derived test limit |
Target number of samples |
Target test time (s) |
Target test time (hh:mm:ss) |
|
O-TCH/ WHS 8.85 |
Frames |
– |
14.5 |
50 |
0,010000 |
0,012340 |
27958 |
560 |
00:09:20 |
Class1b |
5650 |
0,001200 |
0, 001481 |
232951 |
42 |
00:00:42 |
|||
O-TCH/ WHS 6.60 |
Frames |
-5.0 |
13.0 |
50 |
0,010000 |
0,012340 |
27958 |
560 |
00:09:20 |
Class1b |
3900 |
0,001600 |
0,001974 |
174772 |
45 |
00:00:45 |
14.5.1.7 TCH/WFS Adjacent Channel Interference
14.5.1.7.1 Definition
The adjacent channel selectivity is a measure of the capability of the receiver to receive a wanted modulated signal without exceeding a given degradation due to the presence of an unwanted signal in the adjacent channel.
The adjacent channel can be adjacent in the RF spectrum or in time. There are therefore two types of adjacent channel selectivity:
1) Adjacent RF channel selectivity, which is specifically tested in this subclause.
2) Adjacent Time Slot selectivity, which is not tested in this subclause.
14.5.1.7.2 Conformance requirement
At reference adjacent channel interference the TCH/WFS class Ib BER shall meet the reference interference performance of table 2j in 3GPP TS 45.005 subclause 6.3.
At reference adjacent channel interference the TCH/WFS FER shall meet the reference performance stated in 3GPP TS 45.005 subclause 6.2.
The reference performance shall be:
For speech channels (TCH/WHSy) FER £ 1%
The performance requirements for GSM 400 and GSM 700 systems are as for GSM 900 in table 2j, except that the GSM 400 MS speed is doubled from that of GSM 900, e.g. TU50 becomes TU100, and the GSM 700 MS speed is increased by a factor of 1.2, e.g. TU50 becomes TU60.
For packet switched and AMR-WB speech, GMSK modulated channels the wanted input signal level shall be: -93 dBm + Ir + Corr, where:
Ir = the interference ratio according to table 2a and table 2j for the packet switched and AMR-WB speech channels respectively
Corr = the correction factor for reference performance according to subclause 3GPP TS 45.005 subclause 6.2.
The corresponding interference ratio for adjacent channel interference shall be:
Modulation of wanted signal |
GMSK |
||||
‑ |
for adjacent (200 kHz) interference |
C/Ia1 |
= |
C/Ic ‑ 18 dB |
|
‑ |
for adjacent (400 kHz) interference |
C/Ia2 |
= |
C/Ic ‑ 50 dB |
For T-GSM 810 the requirements for GSM 900 shall apply, apart for those parameters for which a separate requirement exists.
Reference: 3GPP TS 45.005 Subclause 2, 6.3
The levels shall be corrected by the following values:
MS, GMSK modulated signals |
||
‑ |
for DCS 1 800 class 1 or class 2 MS |
+2/+4 dB** |
‑ |
for DCS 1 800 class 3 MS |
+2 dB |
‑ |
for GSM 400 small MS, GSM 900 small MS GSM 850 small MS and GSM 700 small MS |
+2 dB |
‑ |
for other GSM 400, GSM 900 MS and GSM 850 MS and GSM 700 MS |
0 dB |
for PCS 1900 class 1 or class 2 MS |
+2 dB |
|
for other PCS 1900 MS |
0 dB |
**NOTE: For DCS 1 800 class 1 and class 2 MS, a correction offset of +2dB shall apply for the reference sensitivity performance as specified in table 1a for the normal conditions defined in Annex D and an offset of +4 dB shall be used to determine all other MS performances.
3GPP TS 45.005 Subclause 6.2
14.5.1.7.3 Test purpose
To verify that with an adjacent channel interferer at 200 kHz and at 400kHz above and below the wanted signal the MS does not exceed conformance requirements in tables 14.5.1.7-3/4 for three given codec rates under propagation condition TUhigh (for GSM 400, GSM 700, T-GSM 810, GSM 850, GSM 900, DCS 1800 and PCS 1900) with no frequency hopping, with an allowance for the statistical significance of the test.
14.5.1.7.4 Method of Test
14.5.1.7.4.1 Initial conditions
A call is set up according to the generic call set up procedure on TCH/WFS with an ARFCN in the mid ARFCN range, power control level set to maximum power.
The multirate configuration indicates the use of a codec set limited to 12.65 kbit/s.
The SS commands the MS to create the traffic channel loop back signalling erased frames.
The SS transmits Standard Test Signal C1 on the TCH (wanted signal) with an amplitude of -93 dBm + Ir + Corr, where Ir equals C/Ic in table.14.5.1.7-2 and the values for Corr are as stated above
14.5.1.7.4.2 Procedure
a) In addition to the wanted signal, the SS transmits an independent, uncorrelated interfering signal, Standard Test Signal I1 (unwanted signal).
The unwanted signal is continuous and has no fixed relationship with the bit transitions of the wanted signal.
The interference ratio shall be set to (C/Ic – 18 dB) for adjacent channel interference of 200 kHz and (C/Ic – 50 dB) for adjacent channel interference of 400 kHz respectively. The co-channel interference values C/Ic can be found in table 14.5.1.7-2.
The fading characteristic of the wanted and the unwanted signal is set to TUHigh.
The unwanted signal is transmitted at a nominal frequency of 200 kHz above the nominal frequency of the wanted signal. The interference ratio is set to (C/Ic – 18 dB), i.e. the amplitude of the unwanted signal is set to (18 dB – C/Ic) above that of the wanted signal.
b) The SS compares the data of the signal that it sends to the MS with the signal which is looped back from the receiver after demodulation and decoding, and checks the frame erasure indication.
c) The SS tests the frame erasure compliance for the TCH/WFS by examining at least the minimum number of samples of consecutive frames. The number of frame erasure events is recorded.
d) The SS determines the number of residual bit error events for the bits of the class Ib, by examining sequences of at least the minimum number of samples of consecutive bits of class Ib, Bits are only taken from those frames for which no bad frame indication was given.
e) The unwanted signal is moved to a nominal frequency of 200 kHz below the nominal frequency of the wanted signal. The interference ratio is set to (C/Ic – 18 dB), i.e. the amplitude of the unwanted signal is set to (18 dB – C/Ic) above that of the wanted signal.
f) The SS uses a Channel Mode Modify procedure to change the active codec set to 8.85 kbit/s. The wanted signal level is set accordingly and steps b) to d) are repeated.
g) The unwanted signal is moved to a nominal frequency of 400 kHz above the nominal frequency of the wanted signal. The interference ratio is set to (C/Ic – 50 dB), i.e. the amplitude of the unwanted signal is set to (50 dB – C/Ic) above that of the wanted signal.
h) The SS uses a Channel Mode Modify procedure to change the active codec set to 6.60 kbit/s. The wanted signal level is set accordingly and steps b) to d) are repeated.
i) The unwanted signal is moved to a nominal frequency of 400 kHz below the nominal frequency of the wanted signal. The interference ratio is set to (C/Ic – 50 dB), i.e. the amplitude of the unwanted signal is set to (50 dB – C/Ic) above that of the wanted signal. Steps b) to d) are repeated.
Maximum/Minimum Duration of Test
Maximum: 5 minutes (GSM850, GSM900), 23 minutes (DCS1800, PCS1900).
Minimum: 2 minutes (GSM850, GSM900), 4 minutes (DCS1800, PCS1900).
14.5.1.7.5 Test requirements
Testing the adjacent channel interference performance is performed using statistical methods that lead to an early pass/fail decision with test time significantly reduced for MS with BER/BLER not on the limit.
For more information on statistical testing of BER/BLER performance, especially the definition of the limit lines refer to Annex 6.2
Wrong decision risk F for one single error ratio test:
Fpass = Ffail = F and F = 0.2%
Wrong decision probability D per test step:
Dpass = Dfail = D and D = 0.0085%
Parameters for limit lines:
1. D = 0.000085 wrong decision probability per test step.
2. M = 1.5 bad DUT factor
3. ne number of (error) events.
4. ns number of samples. The error rate is calculated from ne and ns.
Limit checking
Before limit checking is valid the minimum test time due to fading needs to be considered:
Testing under multipath and interference conditions requires that at least 990 wavelengths are crossed with the speed given in the fading profile. This leads to a minimum test time depending on the frequency range. No early pass/fail decision is allowed until the minimum test time due to fading has elapsed.
Table 14.5.1.7-1: Minimum test times due to TU high fading conditions
Frequency |
0,4 |
0,7 |
0,85 |
0,9 |
1,8 |
1,9 |
GHz |
Wavelength |
0,75 |
0,43 |
0,35 |
0,33 |
0,17 |
0,16 |
m |
min test time |
428 |
244 |
201 |
190 |
95 |
90 |
s |
0:07:08 |
0:04:04 |
0:03:21 |
0:03:10 |
0:01:35 |
0:01:30 |
hh:mm:ss |
If the minimum test time due to multipath conditions exceeds the target test time, then the test runs for the minimum test time due to multipath conditions and the decision is done by comparing the result with the “derived test limit”. In this case early pass/fail decisions are obsolete.
If the target test time exceeds the minimum test time due to multipath conditions early pass/fail decisions can be headed for in order to accelerate test execution.
For an early decision a minimum number of (error) events is necessary.
For an early pass decision ne ≥ 1 (inclusive artificial error)
For an early fail decision ne ≥ 7
When the target test time has been reached the test is finished and a pass/fail decision can be made.
Table 14.5.1.7-2: Co-channel interference ratio C/Ic for GMSK-modulated WB-AMR channels
Type of Channel |
GSM 850 and GSM 900 |
DCS 1 800 & PCS 1 900 |
|
Propagation condition |
|||
TU50(no FH) |
TU50(no FH) |
||
TCH/ WFS12.65 |
dB |
14.5 |
13.0 |
TCH/ WFS8.85 |
dB |
11.5 |
10.0 |
TCH/ WFS6.60 |
dB |
10.5 |
9.0 |
Table 14.5.1.7-3: Statistical test limits for GSM 700, T-GSM 810, GSM 850 and GSM 900 adjacent channel rejection
0.4 to 0.9GHz |
frames per s |
Orig. BER |
Derived |
Target number |
Target test |
Target test time |
||
Channel |
bits per sec |
clas1b per s |
requirement |
test limit |
of samples |
time (s) |
(hh:mm:ss) |
|
WFS 12.65 |
frames |
12650 |
50 |
0.010000 |
0.012340 |
27958 |
560 |
00:09:20 |
Class1b |
12650 |
9050 |
0,004000 |
0,004936 |
69895 |
8 |
00:00:08 |
|
WFS 8.85 |
frames |
8850 |
50 |
0,010000 |
0,012340 |
27958 |
560 |
00:09:20 |
Class1b |
8850 |
5650 |
0,004200 |
0,005183 |
66566 |
12 |
00:00:12 |
|
WFS 6.60 |
frames |
6600 |
50 |
0,010000 |
0,012340 |
27958 |
560 |
00:09:20 |
Class1b |
6600 |
3900 |
0,001600 |
0,001974 |
174737 |
45 |
00:00:45 |
Table 14.5.1.7-3: Statistical test limits for DCS 1 800 and PCS 1 900 adjacent channel rejection
TU high no FH |
||||||||
1.8 and 1.9GHz |
frames per s |
Orig. BER |
Derived |
Target number |
Target test |
Target test time |
||
Channel |
bits per sec |
clas1b per s |
requirement |
test limit |
of samples |
time (s) |
(hh:mm:ss) |
|
WFS 12.65 |
frames |
12650 |
50 |
0,010000 |
0,012340 |
27958 |
560 |
00:09:20 |
Class1b |
12650 |
9050 |
0,006300 |
0,007774 |
44378 |
5 |
00:00:05 |
|
WFS 8.85 |
frames |
8850 |
50 |
0,010000 |
0,012340 |
27958 |
560 |
00:09:20 |
Class1b |
8850 |
5650 |
0,006400 |
0,007898 |
43684 |
8 |
00:00:08 |
|
WFS 6.60 |
frames |
6600 |
50 |
0,010000 |
0,012340 |
27958 |
560 |
00:09:20 |
Class1b |
6600 |
3900 |
0,002700 |
0,003332 |
103548 |
27 |
00:00:27 |
14.5.1.7a Adjacent Channel Interference – TCH/WFS in TIGHTER configuration
14.5.1.7a.1 Definition
The adjacent channel selectivity is a measure of the capability of the receiver to receive a wanted modulated signal without exceeding a given degradation due to the presence of an unwanted signal in the adjacent channel.
The adjacent channel can be adjacent in the RF spectrum or in time. There are therefore two types of adjacent channel selectivity:
1) Adjacent RF channel selectivity, which is specifically tested in this subclause.
2) Adjacent Time Slot selectivity, which is not tested in this subclause.
14.5.1.7a.2 Conformance requirement
3GPP TS 45.005 subclause 6.3.3
Table 6.3-1a: Reference interference ratio requirements in adjacent channels for Packet-switched (Normal symbol-rate), Enhanced circuit-switched data, Wideband AMR and 8-PSK modulated AMR channels, speech and associated control channels in VAMOS mode, TIGHTER – MS
Modulation of wanted signal |
||||||
GMSK |
8-PSK |
16-QAM |
32-QAM |
AQPSK |
||
for adjacent (200 kHz) interference |
C/Ia1 = |
C/Ic ‑ 18 dB, see table 2af for TIGHTER MS |
See table 2l for speech, see tables 2g, 2i, 2n and 2w for other channels, see table 2af for TIGHTER MS |
See table 2w, see table 2af for TIGHTER MS |
See table |
See table 2aa and 2ab |
for adjacent (400 kHz) interference |
C/Ia2 = |
C/Ic ‑ 50 dB |
C/Ic – 50 dB |
C/Ic – 48 dB |
C/Ic – 48 dB |
[Note 1] |
for adjacent (600 kHz) interference |
C/Ia3 = |
C/Ic ‑ 58 dB |
C/Ic – 58 dB |
|||
NOTE 1: The adjacent channel interference @ 400 kHz requirement (C/Ia2) does not apply to channels in VAMOS mode. |
NOTE: The C/Ia3 figure is given for information purposes and will not require testing. It was calculated for the case of an equipment with an antenna connector, operating at output power levels of +33 dBm and below. Rejection of signals at 600 kHz is specified in subclause 5.1.
3GPP TS 45.005 subclause 6.3.4
For all adjacent channel (200 kHz) requirements specified in table 2af for TIGHTER MS, the wanted signal level shall be: -75 dBm + Iar + Corr, where:
Iar = the adjacent channel (200 kHz) interference ratio according to table 2af
Corr = the correction factor for reference performance according to table 6.2-4.
14.5.1.7a.3 Test purpose
To verify that with an adjacent channel interferer at 200 kHz above and below the wanted signal the MS does not exceed conformance requirements in tables 14.5.1.7a-3/4 for three given codec rates under propagation condition TUhigh (for GSM 850, GSM 900, DCS 1800 and PCS 1900) with no frequency hopping, with an allowance for the statistical significance of the test.
14.5.1.7a.4 Method of Test
14.5.1.7a.4.1 Initial conditions
A call is set up according to the generic call set up procedure on TCH/WFS with an ARFCN in the mid ARFCN range, power control level set to maximum power.
The multirate configuration indicates the use of a codec set limited to 12.65 kbit/s.
The SS commands the MS to create the traffic channel loop back signalling erased frames.
The SS transmits Standard Test Signal C1 on the TCH (wanted signal) with an amplitude of -75 dBm + Iar + Corr, where Iar can be found in table.14.5.1.7a-2 and the values for Corr are as stated above.
14.5.1.7a.4.2 Procedure
a) The fading characteristic of the wanted and the unwanted signal is set to TUHigh.
In addition to the wanted signal, the SS transmits an independent, uncorrelated interfering signal, Standard Test Signal I1 (unwanted signal).
The unwanted signal is continuous and has no fixed relationship with the bit transitions of the wanted signal.
The unwanted signal is transmitted at a nominal frequency 200 kHz above the nominal frequency of the wanted signal. Its amplitude is set according to the specified reference interference ratio as in table 14.5.1.7a-2.
b) The SS compares the data of the signal that it sends to the MS with the signal which is looped back from the receiver after demodulation and decoding, and checks the frame erasure indication.
c) The SS tests the frame erasure compliance for the TCH/WFS by examining at least the minimum number of samples of consecutive frames. The number of frame erasure events is recorded.
d) The SS determines the number of residual bit error events for the bits of the class Ib, by examining sequences of at least the minimum number of samples of consecutive bits of class Ib, Bits are only taken from those frames for which no bad frame indication was given.
e) The unwanted signal is moved to a nominal frequency of 200 kHz below the nominal frequency of the wanted signal. Its amplitude is set according to the specified reference interference ratio as in table 14.5.1.7a-2.
f) The SS uses a Channel Mode Modify procedure to change the active codec set to 8.85 kbit/s. The wanted signal level is set accordingly and steps b) to d) are repeated.
g) The unwanted signal is moved to a nominal frequency of 400 kHz above the nominal frequency of the wanted signal. The interference ratio is set to (C/Ic – 50 dB), i.e. the amplitude of the unwanted signal is set to (50 dB – C/Ic) above that of the wanted signal. The co-channel interference values C/Ic can be found in table 14.5.1.7a-3.
h) The SS uses a Channel Mode Modify procedure to change the active codec set to 6.60 kbit/s. The wanted signal level is set accordingly and steps b) to d) are repeated.
i) The unwanted signal is moved to a nominal frequency of 400 kHz below the nominal frequency of the wanted signal. The interference ratio is set to (C/Ic – 50 dB), i.e. the amplitude of the unwanted signal is set to (50 dB – C/Ic) above that of the wanted signal. Steps b) to d) are repeated. The co-channel interference values C/Ic can be found in table 14.5.1.7a-3.
Maximum/Minimum Duration of Test
Maximum: 5 minutes (GSM850, GSM900), 23 minutes (DCS1800, PCS1900).
Minimum: 2 minutes (GSM850, GSM900), 4 minutes (DCS1800, PCS1900).
14.5.1.7a.5 Test requirements
Testing the adjacent channel interference performance is performed using statistical methods that lead to an early pass/fail decision with test time significantly reduced for MS with BER/BLER not on the limit.
For more information on statistical testing of BER/BLER performance, especially the definition of the limit lines refer to Annex 6.2
Limit checking
Before limit checking is valid the minimum test time due to fading needs to be considered:
Table 14.5.1.7a-1: Minimum test times due to TU high fading conditions
Frequency |
0,4 |
0,7 |
0,85 |
0,9 |
1,8 |
1,9 |
GHz |
Wavelength |
0,75 |
0,43 |
0,35 |
0,33 |
0,17 |
0,16 |
m |
min test time |
428 |
244 |
201 |
190 |
95 |
90 |
s |
0:07:08 |
0:04:04 |
0:03:21 |
0:03:10 |
0:01:35 |
0:01:30 |
hh:mm:ss |
The error rates measured for different channels shall be tested according to the values given in table 14.5.1.7a-4 or 14.5.1.7a-5.
Table 14.5.1.7a-2: Adjacent channel interference ratio Iar for GMSK-modulated WB-AMR channels and TIGHTER (acc. TS 45.005 table 2af)
Type of Channel |
GSM 850 and GSM 900 |
DCS 1 800 & PCS 1 900 |
|
Propagation condition |
|||
TU50(no FH) |
TU50(no FH) |
||
TCH/ WFS12.65 |
dB |
-17.5 |
-19.0 |
TCH/ WFS8.85 |
dB |
-20.5 |
-22.0 |
TCH/ WFS6.60 |
dB |
-21.5 |
-23.0 |
Table 14.5.1.7a-3: Co-channel interference ratio C/Ic for GMSK-modulated WB-AMR channels (acc. TS 45.005 table 2j)
Type of Channel |
GSM 850 and GSM 900 |
DCS 1 800 & PCS 1 900 |
|
Propagation condition |
|||
TU50(no FH) |
TU50(no FH) |
||
TCH/ WFS12.65 |
dB |
14.5 |
13.0 |
TCH/ WFS8.85 |
dB |
11.5 |
10.0 |
TCH/ WFS6.60 |
dB |
10.5 |
9.0 |
Table 14.5.1.7a-4: Statistical test limits for GSM 700, T-GSM 810, GSM 850 and GSM 900 adjacent channel rejection
TU high no FH |
||||||||
0.4 to 0.9GHz |
frames per s |
Orig. BER |
Derived |
Target number |
Target test |
Target test time |
||
Channel |
bits per sec |
clas1b per s |
requirement |
test limit |
of samples |
time (s) |
(hh:mm:ss) |
|
WFS 12.65 |
Frames |
12650 |
50 |
0.010000 |
0.012340 |
27958 |
560 |
00:09:20 |
Class1b |
12650 |
9050 |
0,004000 |
0,004936 |
69895 |
8 |
00:00:08 |
|
WFS 8.85 |
Frames |
8850 |
50 |
0,010000 |
0,012340 |
27958 |
560 |
00:09:20 |
Class1b |
8850 |
5650 |
0,004200 |
0,005183 |
66566 |
12 |
00:00:12 |
|
WFS 6.60 |
Frames |
6600 |
50 |
0,010000 |
0,012340 |
27958 |
560 |
00:09:20 |
Class1b |
6600 |
3900 |
0,001600 |
0,001974 |
174737 |
45 |
00:00:45 |
Table 14.5.1.7a-5: Statistical test limits for DCS 1800 and PCS 1900 adjacent channel rejection
TU high no FH |
||||||||
1.8 and 1.9GHz |
frames per s |
Orig. BER |
Derived |
Target number |
Target test |
Target test time |
||
Channel |
bits per sec |
clas1b per s |
requirement |
test limit |
of samples |
time (s) |
(hh:mm:ss) |
|
WFS 12.65 |
Frames |
12650 |
50 |
0,010000 |
0,012340 |
27958 |
560 |
00:09:20 |
Class1b |
12650 |
9050 |
0,006300 |
0,007774 |
44378 |
5 |
00:00:05 |
|
WFS 8.85 |
Frames |
8850 |
50 |
0,010000 |
0,012340 |
27958 |
560 |
00:09:20 |
Class1b |
8850 |
5650 |
0,006400 |
0,007898 |
43684 |
8 |
00:00:08 |
|
WFS 6.60 |
Frames |
6600 |
50 |
0,010000 |
0,012340 |
27958 |
560 |
00:09:20 |
Class1b |
6600 |
3900 |
0,002700 |
0,003332 |
103548 |
27 |
00:00:27 |
14.5.2 Adjacent channel rejection – control channels
14.5.2.1 Definition
The adjacent channel selectivity is a measure of the capability of the receiver to receive a wanted modulated signal without exceeding a given degradation due to the presence of an unwanted signal in the adjacent channel.
The adjacent channel can be the adjacent in the RF spectrum or in time. There are therefore two types of adjacent channel selectivity:
1) Adjacent RF channel selectivity which is specifically tested in this subclause.
2) Adjacent Time Slot selectivity, which is implicitly tested in test 14.2.1.
14.5.2.2 Conformance requirement
1. For adjacent channel interference at 200 kHz above and below the wanted signal frequency and signal level 9 dB above the wanted signal level:
1.1 For a TUhigh faded wanted signal and a TUhigh adjacent channel interferer, the FER for the FACCH/F does not exceed the requirements of table 2 in 3GPP TS 05.05 subclause 6.3.
1.2 For a TUhigh faded wanted signal and a TUhigh adjacent channel interferer, the FER for the FACCH/F does not exceed the requirements of table 2 in 3GPP TS 05.05 under extreme test conditions; 3GPP TS 05.05 subclause 6.3, annex D subclauses D.2.1and D.2.2.
2. For adjacent channel interference at 400 kHz above and below the wanted signal frequency and signal level 41 dB above the wanted signal level:
2.1 For a TUhigh faded wanted signal and a TUhigh adjacent channel interferer, the FER for the FACCH/F does not exceed the requirements of table 2 in 3GPP TS 05.05 subclause 6.3.
2.2 For a TUhigh faded wanted signal and a TUhigh adjacent channel interferer, the FER for the FACCH/F does not exceed the requirements of table 2 in 3GPP TS 05.05 under extreme test conditions; 3GPP TS 05.05 subclause 6.3, annex D subclauses D.2.1and D.2.2.
If a system simulator does not support the faded interferer, a static adjacent interferer has to be used. The following requirements apply;
2 :
2. 3 For a TUhigh faded wanted signal and a static adjacent channel interferer, the FER for the FACCH/F shall be better than:
GSM 400, GSM 700, GSM 850 and GSM 900: 17,1 %; 3GPP TS 05.05, subclause 6.3;
DCS 1 800 and PCS 1 900: 6,1 %; 3GPP TS 05.05, subclause 6.3.
2. 4 For a TUhigh faded wanted signal and a static adjacent channel interferer, the FACCH/F shall be better than:
GSM 400, GSM 700, GSM 850 and GSM 900: 17,1 %;
DCS 1 800 and PCS 1 900: 6,1 %.
under extreme test conditions; 3GPP TS 05.05, subclause 6.3, annex D subclauses D.2.1 and D.2.2.
3GPP TS 45.05 subclause 2:
For T-GSM 810 the requirements for GSM 900 shall apply, apart for those parameters for which a separate requirement exists.
14.5.2.3 Test purpose
1 To verify that with TUhigh adjacent channel interference at 200 kHz above and below a TUhigh wanted signal frequency and signal level 9 dB above the wanted signal level:
1.1 Conformance requirement 1.1 is met with an allowance for the statistical significance of the test.
1.2 Conformance requirement 1.2 is met with an allowance for the statistical significance of the test.
2. To verify that with TUhigh or static adjacent channel interference at 400 kHz above and below a TUhigh wanted signal frequency and signal level 41 dB above the wanted signal level:
2.1 Conformance requirement 2.1 or 2.3 is met with an allowance for the statistical significance of the test.
2.2 Conformance requirement 2.2 or 2.4 is met with an allowance for the statistical significance of the test.
14.5.2.4 Method of test
14.5.2.4.1 Initial conditions
A call is set up according to the generic call set up procedure on a TCH/F in the mid ARFCN range. Any one of the supported TCH/(F9,6, F4,8, or F2,4) or TCH (Signalling Only) shall be used.
The SS transmits the Standard Test Signal C1 on the TCH (wanted signal).
14.5.2.4.2 Procedure
a) In addition to the wanted signal, the SS transmits an independent, uncorrelated interfering signal, Standard Test Signal I1 (unwanted signal).
The unwanted signal is continuous and has no fixed relationship with the bit transitions of the wanted signal. The fading characteristic of the wanted and the unwanted signal is TUhigh.
The unwanted signal is transmitted at a nominal frequency 200 kHz above the nominal frequency of the wanted signal. Its amplitude is set to 9dB above that of the wanted signal.
b) The SS sends a Layer 3 message which does not require a Layer 3 response from the MS. Due to the adjacent channel interference, the MS may not be able to acknowledge the Layer 2 frame. Each repeated L2 frame indicates a frame erasure event. The SS determines the number of frame erasure events during at least the minimum number of samples of FACCH/F frames.
NOTE: These frames will not be consecutive but it is expected that the statistical significance of the tests will not be unduly degraded.
c) The measurement of step b) is repeated with the unwanted signal on a frequency at the same displacement from, but below, the frequency of the wanted signal.
d) The measurement of steps a) to c) is repeated for a displacement of the unwanted signal of 400 kHz, and with the amplitude of the unwanted signal 41 dB above the level of the wanted input signal. The fading characteristic of the unwanted signal is set to TUhigh. If, due to system simulator limitation, fading is not possible
a static interferer may be used. Different test limits apply (see table 14-23).
e) Steps a) to d) are repeated under extreme test conditions.
14.5.2.5 Test requirements
Table 14-23: Limits for adjacent channel selectivity
Interference at |
Channel |
Type of measurement |
Test limit error rate % |
Minimum No. of samples |
Test limit error rate % |
Minimum No. of samples |
200 kHz/400 kHz |
FACCH/F |
FER |
10,640 |
5 639 |
3,808 |
15 756 |
400 kHz interferer static |
FACCH/F |
FER |
19,152 |
3 133 |
6,832 |
8 782 |
The error rates measured in this test shall not exceed the test limit error rates given in table 14-23. This shall apply for any combination of normal and extreme test voltages and ambient temperature, and with the interfering signals at either side of the wanted frequency.
NOTE: A static unwanted signal may be used to avoid a potential problem with the noise floor of the fading simulator.