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14.4.19.4 Method of test
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51.010-1
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14.4.19.4.1 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 12,2 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).
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14.4.19.4.2 Procedure
|
a) In addition to the wanted signal, the SS produces 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.
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 –91dBm.
d) The SS sets the level of the wanted signal to that indicated by Clev in table 14.4.19-2 or 14.4.19-3.
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 uses a Channel Mode Modify procedure to change the active codec set to 7,95 kbit/s and steps c) to f) are repeated.
h) The SS uses a Channel Mode Modify procedure to change the active codec set to 5,9 kbit/s and steps c) to f) are repeated.
i) The SS uses a Channel Mode Modify procedure to change the active codec set to 4,75 kbit/s and steps c) to f) are repeated.
Maximum/Minimum Duration of Test
Maximum: 38 minutes (GSM850), 38 minutes (GSM900), 38 minutes (DCS1800), 38 minutes (PCS1900).
Minimum: 26 minutes (GSM850), 26 minutes (GSM900), 13 minutes (DCS1800), 13 minutes (PCS1900).
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51.010-1
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14.4.19.5 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 14.4.19-1: 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 14.4.19-2 and 14.4.19.3
Table 14.4.19-2: Statistical test limits for T-GSM 810, GSM 850 and GSM 900 O-TCH/AHS co-channel 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)
AHS 12.2
Frames
-74.5
50
0,010000
0,012340
27958
560
00:09:20
Class1b
8150
0,003000
0,003702
93192
12
00:00:12
AHS 7.95
Frames
-76.5
50
0,010000
0,012340
27958
560
00:09:20
Class1b
4200
0,000600
0,000740
466216
111
00:01:51
AHS 5.9
Frames
-78.0
50
0,010000
0,012340
27958
560
00:09:20
Class1b
3150
0,001600
0,001974
174772
56
00:00:56
AHS 4.75
Frames
-79.0
50
0,010000
0,012340
27958
560
00:09:20
Class1b
2800
0,000900
0,001111
310531
111
00:01:51
Table 14.4.19-3: Statistical test limits for DCS 1 800 and PCS 1 900 O-TCH/AHS co-channel 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)
AHS 10.2
Frames
-74.5
50
0,010000
0,012340
27958
560
00:09:20
Class1b
8150
0,003000
0,003702
93192
12
00:00:12
AHS 5.15
Frames
-76.5
50
0,010000
0,012340
27958
560
00:09:20
Class1b
4200
0,000700
0,000864
399305
96
00:01:36
AHS 5.15
Frames
-78.5
50
0,010000
0,012340
27958
560
00:09:20
Class1b
3150
0,001500
0,001851
186385
60
00:01:00
AHS 5.15
Frames
-79.5
50
0,010000
0,012340
27958
560
00:09:20
Class1b
2800
0,001000
0,001234
279578
100
00:01:40
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51.010-1
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14.4.20 Co-channel rejection – O-TCH/AHS-INB
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51.010-1
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14.4.20.1 Definition
|
The co-channel rejection 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 modulated signal, both signals being at the nominal frequency of the receiver.
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14.4.20.2 Conformance requirement
|
1. At reference co channel interference, the O-TCH/AHS-INB shall meet the reference interference performance of table 2k in 3GPP TS 45.005 subclause 6.3.
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51.010-1
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14.4.20.3 Test purpose
|
1. To verify that the MS does not exceed conformance requirement 1, under propagation conditions TUhigh without frequency hopping, with an allowance for the statistical significance of the test.
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14.4.20.4 Method of test
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51.010-1
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14.4.20.4.1 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 the following set of codecs modes:
Codec Mode
TCH/AHS in kbit/s
CODEC_MODE_4
7,95
CODEC_MODE_3
6,7
CODEC_MODE_2
5,9
CODEC_MODE_1
4.75
The Initial Codec Mode shall be set to the lowest codec mode (CODEC_MODE_1).
The following decision threshold and hysteresis values in terms of normalized carrier to interference ratio (C/Inorm), shall apply for Codec Mode Command / Request (MC, MR):
MC'/MR'
THR_MC_Dn(MC')/
THR_MR_Dn(MR')
THR_MC_Up(MC')/
THR_MR_Up(MR')
CODEC_MODE_4
16,0 dB
+
CODEC_MODE_3
12,0 dB
18,0 dB
CODEC_MODE_2
8,0 dB
14,0 dB
CODEC_MODE_1
10,0 dB
The SS transmits Standard Test Signal C1 using 8-PSK on the traffic channel using the Initial Codec Mode (ICM).
The SS continuously sends a CMC corresponding to the highest codec mode (CODEC_MODE_4).
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51.010-1
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14.4.20.4.2 Procedure
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a) In addition to the wanted signal, the SS produces an independent, uncorrelated interfering signal, Standard Test Signal I1 using 8-PSK (unwanted signal).
The unwanted signal is continuous and has no fixed relationship with the bit transitions of the wanted signal. Its amplitude is 9 dB below that of the wanted signal.
b) The fading characteristic of the wanted and the interfering signal is set to TUhigh. The SS commands the MS into non hopping mode.
c) The SS commands the MS to loop back band signalling code words by closing a Loop I.
d) The SS shall change the Codec Mode Indication and Codec Mode Command at to the neighbour mode every 22 speech frames (440 ms) by following a scanning pattern (1->2->3->4->4->3->2->1). CMI should initially be increased. CMC should initially be decreased. The CMICMC pattern shall be repeated until the minimum required number of frame samples has been sent to the MS.
e) The SS compares the in band signalling code words/frames it sends to the MS with the in band signalling code words/frames which are looped back from the receiver after demodulation and decoding, and checks for in band signalling (CMI/CMC) frame errors.
f) The SS determines the frame error events by examining sequences of at least the minimum number of samples of consecutive frames. All frames should be considered when computing the frame error rate: those corresponding to a downlink CMI/CMC transitions and those without downlink CMI/CMC transitions.
NOTE: The delays associated with Loop I are not specified, and will be MS implementation dependant. Loop I should be considered as having two separate parts (DL CMC -> UL CMI and DL CMI -> UL CMR). The delays associated with the two parts may differ. The SS should ensure that the correctly looped in band bits are compared.
Maximum/Minimum Duration of Test
Maximum/minimum: 102 seconds (GSM850, GSM900), 98 seconds (DCS1800, PCS1900).
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14.4.20.5 Test requirements
|
The frame error rate measured in this test shall not exceed the test limit error rate values given in table 14.4.20-1 or table 14.4.20-2.
Table 14.4.20-1: Limits for GSM 400, GSM 700, T-GSM 810, GSM 850 and GSM 900 co-channel rejection
Channel
Propagation
condition
Test limit
error rate %
Minimum No.
of samples
TCH/AHS-INB (FER)
TUhigh/No FH
11.760
5102
Table 14.4.20-2: Limits for DCS 1800 and PCS 1 900 co-channel rejection
Channel
Propagation
condition
Test limit
error rate %
Minimum No.
of samples
TCH/AHS-INB (FER)
TUhigh/No FH
12.320
4870
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51.010-1
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14.4.21 Co-channel rejection – O-FACCH/H
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51.010-1
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14.4.21.1 Definition
|
-
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51.010-1
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14.4.21.2 Conformance requirement
|
At reference co channel interference the O-FACCH/H FER shall meet the reference interference performance of table 2k in 3GPP TS 45.005 subclause 6.3).
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51.010-1
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14.4.21.3 Test purpose
|
To verify that the MS does not exceed the conformance requirement under propagation condition TUhigh with an allowance for the statistical significance of the test.
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51.010-1
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14.4.21.4 Method of test
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51.010-1
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14.4.21.4.1 Initial conditions
|
A call is set up according to the generic call set up procedure on a O-TCH/WHS or O-TCH/AHS (as supported by MS) with an ARFCN in the mid ARFCN range. The power control level is set to maximum power.
The SS transmits Standard Test Signal C1 on the traffic channel (wanted signal).
Specific PICS Statements:
- Support of GSM speech half rate version 4 (O-TCH/WHS) (TSPC_O-TCH_WHS)
- Support of GSM speech half rate version 6 (O-TCH/AHS) (TSPC_O-TCH_AHS)
PIXIT Statements:
-
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51.010-1
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14.4.21.4.2 Procedure
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a) In addition to the wanted signal, the SS produces 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. Its amplitude is 10 dB below that of the wanted signal for GSM 800 and GSM 900, and9.5dB below that of the wanted signal for GSM 1800 and GSM 1900.
The fading characteristic of the wanted and the interfering signal is TU50.
d) The SS sends a Layer 3 message which does not require a Layer 3 response from the MS. Due to the co-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/H frames.
NOTE: These frames will not be consecutive but it is expected that the statistical significance of the tests will not be unduly degrade.
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51.010-1
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14.4.21.5 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 14.4.30-1: Minimum test times due to TU 50 fading conditions
Half Rate 50 km/h
Frequency (GHz)
0,85
0,9
1,8
1,9
Wavelength (m)
0,35
0,33
0,17
0,16
Min test time (s)
403
380
190
180
0:06:43
0:06:20
0:03:10
0:03:00
If the minimum test time due to multipath conditions exceeds the time taken for obtaining the minimum number of samples, 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 time taken for obtaining the minimum number of samples 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 minimum number of samples have been obtained 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 table 14.4.30-2.
Table 14.4.30-2: Limits for co-channel rejection
Channel
Type of measurement
Propagation condition
Original BER requirement
Derived test limit
Minimum No. of samples
O-FACCH/H
FER
TUhigh/No FH
0,050000
0,061700
5592
14.4.22 to 14.4.23 Void
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51.010-1
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14.4.24 Co-channel interference - O-TCH/WFS
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51.010-1
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14.4.24.1 Definition
|
The co-channel interference performance 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 modulated signal, both signals being at the nominal frequency of the receiver.
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51.010-1
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14.4.24.2 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 performance requirements for GSM 400 and GSM 700 systems are as for GSM 900 in table 2, 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. 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. The reference interference ratio shall be, for BTS and all types of MS:
‑
for co channel interference
C/Ic
=
9 dB
For GMSK modulated channels, packet switched and ECSD and speech channels (AMR-WB), and for 8-PSK modulated channels, packet switched and ECSD and 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 2a, 2d, 2e and 2j (GMSK), 2b and 2c, 2d and 2e, and 2k (8-PSK) respectively, according to the type of channel, the propagation condition and type of equipment.
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%
where y denotes the codec rate. All other requirements in tables 1f and 1g shall be fulfilled at this input level for reference performance.
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
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683b5b8a98f7b1390ddd5516ea9247a2
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51.010-1
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14.4.24.3 Test purpose
|
To verify that the MS does not exceed conformance requirement for FER and class 1b RBER under TUhigh propagation conditions with an allowance for the statistical significance of the test, for channel combinations O-TCH/WFS 8.85 and O-TCH/WFS23.85.
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683b5b8a98f7b1390ddd5516ea9247a2
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51.010-1
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14.4.24.4 Method of test
| |
683b5b8a98f7b1390ddd5516ea9247a2
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51.010-1
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14.4.24.4.1 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. 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).
The SS commands the MS to create the traffic channel loop back, signalling erased frames (subclause 36).
|
683b5b8a98f7b1390ddd5516ea9247a2
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51.010-1
|
14.4.24.4.2 Procedure
|
a) In addition to the wanted signal, the SS produces 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.
b) The fading characteristic of the wanted and the interfering signals are set to TUhigh.
c) The SS sets the level of the interfering signal to (-93 + Corr +2) dBm (where Corr is the correction factor from 14.4.24.2). Throughout the test the C/I (interference ratio) shall be set by modifying the wanted signal.
d) The interference ratio is set to C/Ic from table 14.4.24-2 or 14.4.24-3.
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.
The SS uses a Channel Mode Modify procedure to change the active codec set to 23.85 kbit/s and steps c) to f) are repeated.
Maximum/Minimum Duration of Test
Maximum: 20 minutes (GSM700, T-GSM 810, GSM850 and GSM900), 20 minutes (DCS1800 and PCS1900).
Minimum: 7 minutes (GSM700, T-GSM 810, GSM850 and GSM900), 4 minutes (DCS1800 and PCS1900).
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683b5b8a98f7b1390ddd5516ea9247a2
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51.010-1
|
14.4.24.5 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 14.4.24-1: Minimum test times due to TU 50 fading conditions
Full Rate 50 km/h
Frequency (GHz)
0,85
0,9
1,8
1,9
Wavelength (m)
0,35
0,33
0,17
0,16
Min test time (s)
201
190
95
90
0:03:21
0:03:10
0:01:35
0:01:30
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 14.4.24-2 and 14.4.24.3.
Table 14.4.24-2: Statistical test limits for GSM 700, T-GSM 810, GSM 850 and GSM 900 O-TCH/WHS co-channel interference
TUhigh / No FH
0.4 to 0.9GHz
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)
WFS 8.85
Frames
10.5
50
0,010000
0,012340
27958
560
00:09:20
Class1b
5650
0,002200
0,002715
127072
23
00:00:23
WFS23.85
Frames
16.0
50
0,010000
0,012340
27958
560
00:09:20
Class1b
19450
0,001500
0,001851
186386
10
00:00:10
Table 14.4.24-3: Statistical test limits for DCS 1 800 and PCS 1 900 O-TCH/WHS co-channel interference
TUhigh / No FH
1.8 to 1.9GHz
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)
WFS 8.85
Frames
9.0
50
0,010000
0,012340
27958
560
00:09:20
Class1b
5650
0,002800
0,003455
99856
18
00:00:18
WFS23.85
Frames
14.5
50
0,010000
0,012340
27958
560
00:09:20
Class1b
19450
0,002000
0,002468
139790
8
00:00:08
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51.010-1
|
14.4.25 Co-channel interference – O-TCH/WHS
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683b5b8a98f7b1390ddd5516ea9247a2
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51.010-1
|
14.4.25.1 Definition
|
The co-channel interference performance 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 modulated signal, both signals being at the nominal frequency of the receiver.
|
683b5b8a98f7b1390ddd5516ea9247a2
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51.010-1
|
14.4.25.2 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
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 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, O-TCH/WFSy, O-TCH/WHSy)
FER
:
£ 1%
where y denotes the codec rate. All other requirements in tables 1f and 1g shall be fulfilled at this input level for reference performance.
3GPP TS 45.005, subclauses 6.2, 6.3.
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683b5b8a98f7b1390ddd5516ea9247a2
|
51.010-1
|
14.4.25.3 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/WHS12.65 and O-TCH/WHS 6.60.
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683b5b8a98f7b1390ddd5516ea9247a2
|
51.010-1
|
14.4.25.4 Method of test
| |
683b5b8a98f7b1390ddd5516ea9247a2
|
51.010-1
|
14.4.25.4.1 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 12,65 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).
|
683b5b8a98f7b1390ddd5516ea9247a2
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51.010-1
|
14.4.25.4.2 Procedure
|
a) In addition to the wanted signal, the SS produces 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.
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 (-93 + Corr +2) dBm (where Corr is the correction factor from 14.4.25.2). Throughout the test the C/I (interference ratio) shall be set by modifying the wanted signal.
d) The interference ratio is set to C/Ic from table 14.4.25-2 or 14.4.25-3.
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.
g) 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.
h) The SS uses a Channel Mode Modify procedure to change the active codec set to 6.60 kbit/s and steps c) 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).
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51.010-1
|
14.4.25.5 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 14.4.25-1: Minimum test times due to TU 50 fading conditions
Half Rate 50 km/h
Frequency (GHz)
0,85
0,9
1,8
1,9
Wavelength (m)
0,35
0,33
0,17
0,16
Min test time (s)
403
380
190
180
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 14.4.25-2 and 14.4.25.3.
Table 14.4.25-2: Statistical test limits for T-GSM 810, GSM 850 and GSM 900 O-TCH/WHS co-channel interference
TU50 / No FH
0.8 to 0.9GHz
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)
WHS12.65
Frames
17.0
50
0,010000
0,012340
27958
560
00:09:20
Class1b
9050
0,002700
0,003332
103542
12
00:00:12
WHS 6.60
Frames
13.5
50
0,010000
0,012340
27958
560
00:09:20
Class1b
3900
0,001200
0,001481
232951
60
00:01:00
Table 14.4.25-3: Statistical test limits for DCS 1 800 and PCS 1 900 O-TCH/WHS co-channel interference
TU50 / No FH
1.8 to 1.9GHz
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)
WHS12.65
Frames
16.5
50
0,010000
0,012340
27958
560
00:09:20
Class1b
9050
0,003000
0,003702
93193
11
00:00:11
WHS 6.60
Frames
13.0
50
0,010000
0,012340
27958
560
00:09:20
Class1b
3900
0,001200
0,001481
232951
60
00 :01:00
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683b5b8a98f7b1390ddd5516ea9247a2
|
51.010-1
|
14.4.26 Co-channel rejection - O-TCH/WFS-INB
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683b5b8a98f7b1390ddd5516ea9247a2
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51.010-1
|
14.4.26.1 Definition
|
The co-channel rejection 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 modulated signal, both signals being at the nominal frequency of the receiver.
|
683b5b8a98f7b1390ddd5516ea9247a2
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51.010-1
|
14.4.26.2 Conformance requirement
|
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 (TCH/WFSy)
FER
:
£ 1%
‑
for speech channels (O-TCH/AHSy, O-TCH/WFSy, O-TCH/WHSy)
FER
:
£ 1%
‑
for fast associated control channels (O-FACCH/F, O-FACCH/H)
FER
:
£ 5%
-
for in band signalling channels (TCH/WFS-INB, O-TCH/AHS-INB, O-TCH/WFS-INB, O-TCH/WHS-INB)
FER
:
£ 0,5%
-
for EVSIDUR and EVRFR
FER
:
£ 1%
where y denotes the codec rate. All other requirements in tables 1f and 1g shall be fulfilled at this input level for reference performance.
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.
3GPP TS 45.005; Subclause 6.2
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 performance requirements for GSM 400 and GSM 700 systems are as for GSM 900 in table 2, 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. 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. The reference interference ratio shall be, for BTS and all types of MS:
‑
for co channel interference
C/Ic
=
9 dB
‑
for adjacent (200 kHz) interference
C/Ia1
=
‑9 dB
‑
for adjacent (400 kHz) interference
C/Ia2
=
‑41 dB
‑
for adjacent (600 kHz) interference
C/Ia3
=
‑49 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
3GPP TS 45.005; Subclause 6.3
The delays associated with Loop I remain constant for all of the following circumstances:
- For a given MS implementation.
- For the duration of the MS being powered on.
3GPP TS 44.014 subclause 5.1.7a.1.
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683b5b8a98f7b1390ddd5516ea9247a2
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51.010-1
|
14.4.26.3 Test purpose
|
To verify that the MS does not exceed conformance requirement under propagation condition TU high without frequency hopping with an allowance for the statistical significance of the test.
|
683b5b8a98f7b1390ddd5516ea9247a2
|
51.010-1
|
14.4.26.4 Method of test
| |
683b5b8a98f7b1390ddd5516ea9247a2
|
51.010-1
|
14.4.26.4.1 Initial conditions
|
A call is set up according to the generic call set up procedure on 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 the following set of codecs modes:
Codec Mode
O-TCH/WFS in kbit/s
CODEC_MODE_4
23,85
CODEC_MODE_3
12,65
CODEC_MODE_2
8,85
CODEC_MODE_1
6,60
The Initial Codec Mode shall be set to the lowest codec mode (CODEC_MODE_1).
The following decision threshold and hysteresis values in terms of normalised carrier to interference ratio (C/Inorm), shall apply for Codec Mode Command / Request (MC, MR):
MC'/MR'
THR_MC_Dn(MC)/
THR_MR_Dn(MR)
THR_MC_Up(MC)/
THR_MR_Up(MR)
CODEC_MODE_4
18,5 dB
+∞
CODEC_MODE_3
12,5 dB
20,5 dB
CODEC_MODE_2
6,5 dB
14,5 dB
CODEC_MODE_1
~∞
8,5 dB
The SS transmits Standard Test Signal C1 on the traffic channel using the Initial Codec Mode (ICM).
The SS continuously sends a CMC corresponding to the highest codec mode (CODEC_MODE_4).
The SS commands the MS to loop back in band signalling code words by closing a Loop I.
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683b5b8a98f7b1390ddd5516ea9247a2
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51.010-1
|
14.4.26.4.2 Procedure
|
a) In addition to the wanted signal, the SS produces 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. Its amplitude is set to (-93 + Corr +2) dBm (where Corr is the correction factor from 14.4.26.2). The C/I (interference ratio) shall be set by modifying the wanted signal..
The interference ratios C/Ic for the specific frequency bands are set according table 14.4.26-1 or 14.4.26-2.
The fading characteristic of the wanted and the interfering signal is TU high.
b) The SS shall change the Codec Mode Indication and Codec Mode Command at to the neighbour mode every 22 speech frames (440 ms) by following a scanning pattern (1->2->3->4->4->3->2->1). CMI should initially be increased. CMC should initially be decreased. The CMIC/MC shall be repeated until the minimum required number of frame samples has been sent to the MS.
c) The SS compares the in band signalling code words/frames it sends to the MS with the in band signalling code words/frames which are looped back from the receiver after demodulation and decoding, and checks for in band signalling (CMI/CMC) frame errors.
d) The SS determines the frame error events by examining sequences of at least the minimum number of samples of consecutive frames. All frames should be considered when computing the frame error rate: those corresponding to a downlink CMI/CMC transitions and those without downlink CMI/CMC transitions.
NOTE: The delays associated with Loop I are not specified, and will be MS implementation dependant. Loop I should be considered as having two separate parts (DL CMC -> UL CMI and DL CMI -> UL CMR). The delays associated with the two parts may differ. The SS should ensure that the correctly looped in band bits are compared. The delays associated with Loop I will remain constant for the duration of the test, thus every UL frame received by the SS will have only one possible expected value.
Maximum/Minimum Duration of Test
Maximum/minimum: 19 minutes.
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683b5b8a98f7b1390ddd5516ea9247a2
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51.010-1
|
14.4.26.5 Test requirements
|
The frame error rate measured in this test shall not exceed the test limit error rate values given in table 14.4.26-1.
Table 14.4.26-1: Limits for T-GSM 810, GSM 850 and GSM 950 O-TCH/WFS-INB co-channel rejection
Channel
Propagation
condition
C/Ic
dB
Test limit
error rate %
Minimum No.
of samples
O-TCH/WFS-INB (FER)
TU high/No FH
7.0
0.617
55916
Table 14.4.26-2: Limits for DCS 1800 and PCS 1900 O-TCH/WFS-INB co-channel rejection
Channel
Propagation
condition
C/Ic
dB
Test limit
error rate %
Minimum No.
of samples
O-TCH/WFS-INB (FER)
TU high/No FH
6.5
0.617
55916
|
683b5b8a98f7b1390ddd5516ea9247a2
|
51.010-1
|
14.4.27 Void
| |
683b5b8a98f7b1390ddd5516ea9247a2
|
51.010-1
|
14.4.28 Co-channel rejection - TCH/WFS
| |
683b5b8a98f7b1390ddd5516ea9247a2
|
51.010-1
|
14.4.28.1 Definition
|
The co-channel rejection 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 modulated signal, both signals being at the nominal frequency of the receiver.
|
683b5b8a98f7b1390ddd5516ea9247a2
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51.010-1
|
14.4.28.2 Conformance requirement
|
At reference co-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.
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 6.2.
3GPP TS 45.005 subclause 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
** 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
For T-GSM 810 the requirements for GSM 900 shall apply, apart for those parameters for which a separate requirement exists.
3GPP TS 45.005 subclause 2
|
683b5b8a98f7b1390ddd5516ea9247a2
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51.010-1
|
14.4.28.3 Test purpose
|
1. To verify that the MS does not exceed conformance requirement at the maximum implemented codec rate under propagation condition TUhigh (for GSM 700, T-GSM 810, GSM 850, GSM 900, DCS 1800 and PSC 1900) with no frequency hopping, RAhigh with no frequency hoping (for GSM 700, T-GSM 810, GSM 850 and GSM 900), and TUlow (for GSM 700, T-GSM 810, GSM 850 and GSM900) with no frequency hopping with an allowance for the statistical significance of the test.
2. To verify that the MS does not exceed conformance requirement for the remaining implemented codec rates under propagation condition TUhigh with no frequency hopping with an allowance for the statistical significance of the test.
|
683b5b8a98f7b1390ddd5516ea9247a2
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51.010-1
|
14.4.28.4 Method of test
| |
683b5b8a98f7b1390ddd5516ea9247a2
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51.010-1
|
14.4.28.4.1 Initial conditions
|
A call is set up according to the generic call set up procedure on a TCH/WFS 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 6.60 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).
Specific PICS statements:
- TSPC_Type_SmallMS
- TSPC_Type_DCS_Class1
- TSPC_Type_DCS_Class2
- TSPC_Type_DCS_Class3
- TSPC_Type_PCS_Class1
- TSPC_Type_PCS_Class2
PIXIT statements:
-
|
683b5b8a98f7b1390ddd5516ea9247a2
|
51.010-1
|
14.4.28.4.2 Procedure
|
a) In addition to the wanted signal, the SS produces 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 shall be set to (-93 + Corr) dB (where Corr is the correction factor from 14.4.28.2). Throughout the test the C/I (interference ratio) shall be set by modifying the wanted signal.
The interference ratio is set to C/Ic from table 14.4.28-6 or 14.4.28-7.
The fading characteristic of the wanted and the interfering signal is TUHigh non-hoping (TU50 for T-GSM 810, GSM 850 and GSM 900, TU60 for GSM 700).
b) The SS compares the modulation 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 determines the number of residual bit error events for the bits of the class Ib, by examining at least the minimum number of samples of consecutive bits of class Ib. Bits are only taken from those frames not signalled as erased.
d) The SS also determines the frame erasure events by examining at least the minimum number of samples of consecutive frames and assuming a frame is received successfully if it is not signalled as erased.
e) The SS uses a Channel Mode Modify procedure to change the active codec set to 8.85 kbit/s, and the interference ratio is adjust to C/Ic from table 14.4.28-6 or 14.4.28-7. Steps b) to d) are repeated.
f) The SS uses a Channel Mode Modify procedure to change the active codec set to 12.65 kbit/s, and the interference radio adjust to C/Ic from table 14.4.28-6 or 14.4.28-7.. Steps b) to d) are repeated.
h) If DCS 1800 or PCS 1900 then skip steps i) and j).
i) The fading characteristic of the wanted and the interfering signal is set to TULow non-hoping (TU3 for T-GSM 810, GSM 850 and GSM 900, TU3.6 for GSM 700), and the interference ratio adjusted to C/Ic from table 14.4.28-4. Steps b) to d) are repeated.
j) The fading characteristic of the wanted and the interfering signal is set to RAHigh non-hoping (RA250 for T-GSM 810, GSM 850 and GSM 900, RA300 for GSM 700) and the interference ratio adjusted to C/Ic from table 14.4.28-5. Steps b) to d) are repeated.
Maximum/Minimum Duration of Test
- Maximum: 30 minutes (GSM 700), 25 minutes (GSM850, GSM900) or 5 minutes (DCS1800, PCS1900).
- Minimum: 30 minutes (GSM 700), 25 minutes, (GSM850, GSM900) or 5 minutes (DCS1800, PCS1900).
|
683b5b8a98f7b1390ddd5516ea9247a2
|
51.010-1
|
14.4.28.5 Test requirements
|
Testing the Co‑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 limit lines refer to Annex A7.
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 14‑1.
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 for fading profiles greater than 5km/h, and 250 wavelengths are crossed for fading profiles less than or equal to 5km/h. 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 14.4.28-1: Minimum test times due to TU low fading conditions
Full Rate 3 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
-
-
m
min test time
1800
1029
847
800
-
-
S
0:30:00
0:17:09
0:14:07
0:13:20
-
-
hh:mm:ss
Full Rate 3.6km/h
Frequency
0,4
0,7
0,85
0,9
1,8
1,9
GHz
Wavelength
0,75
0,43
0,35
0,33
-
-
m
min test time
1500
857
706
667
-
-
S
0:25:00
0:14:17
0:11:46
0:11:07
-
-
hh:mm:ss
Table 14.4.28-2: 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
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
Full Rate 60 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
min test time
356
204
168
158
79
75
s
0:05:56
0:03:24
0:02:48
0:02:38
0:01:19
0:01:15
hh:mm:ss
Table 14.4.28-3: Minimum test times due to RA high fading conditions
Full Rate 250 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
-
-
m
min test time
86
49
40
38
-
-
S
0:1:26
0:0:49
0:0:40
0:0:38
-
-
hh:mm:ss
Full Rate 300 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
-
-
m
min test time
71
41
34
32
-
-
S
0:1:11
0:0:41
0:0:34
0:0:32
-
-
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 rate measured in this test shall be tested according to the values given in tables 14.4.28-4 through 14.4.28-7.
Table 14.4.28-4: Statistical test limits for GSM 700, T-GSM 810, GSM 850 and GSM 900 TU low no FH
0.4 to 0.9GHz
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)
WFS 12.65
frames
21.5
50
0,010000
0,012340
27958
560
00:09:20
Class1b
(as frames)
9050
0,000800
0,000987
349473
39
00:00:39
Table 14.4.28-5: Statistical test limits for GSM 700, T-GSM 810, GSM 850 and GSM 900 RA High no FH
0.4 to 0.9GHz
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)
WFS 12.65
frames
12,5
50
0,010000
0,012340
27958
560
00:09:20
Class1b
(as frames)
9050
0,006300
0,007774
44378
5
00:00:05
Table 14.4.28-6: Statistical test limits for GSM 700, T-GSM 810, GSM 850 and GSM 900 TU high no FH
0.4 to 0.9GHz
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)
WFS 12.65
frames
14.5
50
0,010000
0,012340
27958
560
00:09:20
Class1b
(as frames)
9050
0,004000
0,004936
69895
8
00:00:08
WFS 8.85
frames
11.5
50
0,010000
0,012340
27958
560
00:09:20
Class1b
(as frames)
5650
0,004200
0,005183
66566
12
00:00:12
WFS 6.60
frames
10.5
50
0,010000
0,012340
27958
560
00:09:20
Class1b
(as frames)
3900
0,001600
0,001974
174737
45
00:00:45
Table 14.4.28-7: Statistical test limits for DCS 1 800 and PCS 1 900 TU high no FH
0.4 to 0.9GHz
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)
WFS 12.65
frames
13,0
50
0,010000
0,012340
27958
560
00:09:20
Class1b
(as frames)
9050
0,006300
0,007774
44378
5
00:00:05
WFS 8.85
frames
10,0
50
0,010000
0,012340
27958
560
00:09:20
Class1b
(as frames)
5650
0,006400
0,007898
43684
8
00:00:08
WFS 6.60
frames
9,0
50
0,010000
0,012340
27958
560
00:09:20
Class1b
(as frames)
3900
0,002700
0,003332
103548
27
00:00:27
14.4.28a Co-channel rejection - TCH/WFS in TIGHTER configuration
14.4.28a.1 Definition
The co-channel rejection 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 modulated signal, both signals being at the nominal frequency of the receiver.
14.4.28a.2 Conformance requirement
3GPP TS 45.005 subclause 6.3.5
A MS indicating support for TIGHTER Capability (see 3GPP TS 24.008) shall fulfil the requirements in table 2ad for co channel interference (C/Ic).
The reference performance shall be:
Table 6.3-6: Reference performance for TIGHTER
For speech channels (TCH/FS, TCH/HS, TCH/EFS, TCH/AFSx, TCH/AHSx, TCH/WFSx )
FER:
1 %
14.4.28a.3 Test purpose
1. For TCH/WFS FER, MS shall meet the reference interference performance mentioned in 3GPP TS 45.005 sub clause 6.3.5, for co-channel interference ratio mentioned in table 2ad according to propagation conditions.
2. At reference co-channel interference the TCH/WFS class Ib BER shall meet the reference interference performance of table 2ad in 3GPP TS 45.005.
14.4.28a.4 Method of test
14.4.28a.4.1 Initial conditions
A call is set up according to the generic call set up procedure on a TCH/WFS 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 6.60 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).
Specific PICS statements:
-
PIXIT statements:
-
14.4.28a.4.2 Procedure
a) In addition to the wanted signal, the SS produces 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 shall be set to -93 dBm + Corr (where Corr is the correction factor from 3GPP TS 45.005 subclause 6.2) and throughout the test the C/I (interference ratio) shall be set by modifying the wanted signal.
The interference ratio is set to C/Ic from table 14.4.28a-6 or 14.4.28a-7.
The fading characteristic of the wanted and the interfering signal is TUHigh non-hopping.
b) The SS compares the modulation 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 determines the number of residual bit error events for the bits of the class Ib, by examining at least the minimum number of samples of consecutive bits of class Ib. Bits are only taken from those frames not signalled as erased.
d) The SS also determines the frame erasure events by examining at least the minimum number of samples of consecutive frames and assuming a frame is received successfully if it is not signalled as erased.
e) The SS uses a Channel Mode Modify procedure to change the active codec set to 8.85 kbit/s, and the interference ratio is adjust to C/Ic from table 14.4.28a-6 or 14.4.28a-7. Steps b) to d) are repeated.
f) The SS uses a Channel Mode Modify procedure to change the active codec set to 12.65 kbit/s, and the interference radio adjust to C/Ic from table 14.4.28a-6 or 14.4.28a-7. Steps b) to d) are repeated.
h) If DCS 1800 or PCS 1900 then skip steps i) and j).
i) The fading characteristic of the wanted and the interfering signal is set to TULow non-hoping and the interference ratio adjusted to C/Ic from table 14.4.28a-4. Steps b) to d) are repeated.
j) The fading characteristic of the wanted and the interfering signal is set to RAHigh non-hoping and the interference ratio adjusted to C/Ic from table 14.4.28a-5. Steps b) to d) are repeated.
Maximum/Minimum Duration of Test
- Maximum: 25 minutes (GSM850, GSM900) or 5 minutes (DCS1800, PCS1900).
- Minimum: 25 minutes, (GSM850, GSM900) or 5 minutes (DCS1800, PCS1900).
14.4.28a.5 Test requirements
Testing the Co‑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 limit lines refer to Annex A7.
Limit checking
Before limit checking is valid the minimum test time due to fading needs to be considered:
Table 14.4.28a-1: Minimum test times due to TU low fading conditions
Full Rate 3 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
-
-
m
min test time
1800
1029
847
800
-
-
S
0:30:00
0:17:09
0:14:07
0:13:20
-
-
hh:mm:ss
Full Rate 3.6km/h
Frequency
0,4
0,7
0,85
0,9
1,8
1,9
GHz
Wavelength
0,75
0,43
0,35
0,33
-
-
m
min test time
1500
857
706
667
-
-
S
0:25:00
0:14:17
0:11:46
0:11:07
-
-
hh:mm:ss
Table 14.4.28a-2: 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
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
Full Rate 60 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
min test time
356
204
168
158
79
75
s
0:05:56
0:03:24
0:02:48
0:02:38
0:01:19
0:01:15
hh:mm:ss
Table 14.4.28a-3: Minimum test times due to RA high fading conditions
Full Rate 250 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
-
-
m
min test time
86
49
40
38
-
-
S
0:1:26
0:0:49
0:0:40
0:0:38
-
-
hh:mm:ss
Full Rate 300 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
-
-
m
min test time
71
41
34
32
-
-
S
0:1:11
0:0:41
0:0:34
0:0:32
-
-
hh:mm:ss
The error rate measured in this test shall be tested according to the values given in tables 14.4.28a-4 through 14.4.28a-7.
Table 14.4.28a-4: Statistical test limits for GSM 850 and GSM 900 TU low no FH
0.4 to 0.9GHz
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)
WFS 12.65
frames
14.5
50
0,010000
0,012340
27958
560
00:09:20
Class1b
(as frames)
9050
0,000800
0,000987
349473
39
00:00:39
Table 14.4.28a-5: Statistical test limits for GSM 850 and GSM 900 RA High no FH
0.4 to 0.9GHz
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)
WFS 12.65
frames
12.5
50
0,010000
0,012340
27958
560
00:09:20
Class1b
(as frames)
9050
0,006300
0,007774
44378
5
00:00:05
Table 14.4.28a-6: Statistical test limits for GSM 850 and GSM 900 TU high no FH
0.4 to 0.9GHz
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)
WFS 12.65
frames
8,5
50
0,010000
0,012340
27958
560
00:09:20
Class1b
(as frames)
9050
0,004000
0,004936
69895
8
00:00:08
WFS 8.85
frames
5,5
50
0,010000
0,012340
27958
560
00:09:20
Class1b
(as frames)
5650
0,004200
0,005183
66566
12
00:00:12
WFS 6.60
frames
4,5
50
0,010000
0,012340
27958
560
00:09:20
Class1b
(as frames)
3900
0,001600
0,001974
174737
45
00:00:45
Table 14.4.28a-7: Statistical test limits for DCS 1 800 and PCS 1 900 TU high no FH
0.4 to 0.9GHz
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)
WFS 12.65
frames
7.0
50
0,010000
0,012340
27958
560
00:09:20
Class1b
(as frames)
9050
0,006300
0,007774
44378
5
00:00:05
WFS 8.85
frames
4.0
50
0,010000
0,012340
27958
560
00:09:20
Class1b
(as frames)
5650
0,006400
0,007898
43684
8
00:00:08
WFS 6.60
frames
3.0
50
0,010000
0,012340
27958
560
00:09:20
Class1b
(as frames)
3900
0,002700
0,003332
103548
27
00:00:27
|
683b5b8a98f7b1390ddd5516ea9247a2
|
51.010-1
|
14.4.29 Co-channel interference - TCH/WFS-INB
| |
683b5b8a98f7b1390ddd5516ea9247a2
|
51.010-1
|
14.4.29.1 Definition
|
The co-channel interference 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 modulated signal, both signals being at the nominal frequency of the receiver.
|
683b5b8a98f7b1390ddd5516ea9247a2
|
51.010-1
|
14.4.29.2 Conformance requirement
|
At reference co-channel interference the TCH/WFS-INB FER shall meet the reference interference performance of TCH/AFS-INB FER, as stated in NOTE 5 in table 2j in 3GPP TS 45.005 subclause 6.3.
The delays associated with Loop I remain constant for all of the following circumstances:
- For a given MS implementation.
- For the duration of the MS being powered on.
NOTE: While a Loop I is active, it is expected that the SS transmit a valid downlink signal including speech frames channel encoded according to the DL CMI.
3GPP TS 44.014 subclause 5.1.7a.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.
3GPP TS 45.005 subclause 6.3
For T-GSM 810 the requirements for GSM 900 shall apply, apart for those parameters for which a separate requirement exists.
3GPP TS 45.005 subclause 2.
|
683b5b8a98f7b1390ddd5516ea9247a2
|
51.010-1
|
14.4.29.3 Test purpose
|
1. To verify that the MS does not exceed conformance requirement at the maximum implemented codec rate under propagation condition TUhigh (for GSM 700, T-GSM 810, GSM 850, GSM 900, DCS 1800 and PSC 1900) with no frequency hopping with an allowance for the statistical significance of the test.
2. To verify that the MS does not exceed conformance requirement for the remaining implemented codec rates under propagation condition TUhigh with no frequency hopping with an allowance for the statistical significance of the test.
|
683b5b8a98f7b1390ddd5516ea9247a2
|
51.010-1
|
14.4.29.4 Method of test
| |
683b5b8a98f7b1390ddd5516ea9247a2
|
51.010-1
|
14.4.29.4.1 Initial conditions
|
A call is set up according to the generic call set up procedure on a TCH/WFS with an ARFCN in the mid ARFCN range, power control level set to maximum power.
The multirate configuration indicates the use of the following set of codecs modes:
Codec Mode
TCH/WFS in kbit/s
CODEC_MODE_3
12.65
CODEC_MODE_2
8.85
CODEC_MODE_1
6.6
The Initial Codec Mode shall be set to the lowest codec mode (CODEC_MODE_1).
The following decision threshold and hysteresis values in terms of normalized carrier to interference ratio (C/Inorm), shall apply for Codec Mode Command / Request (MC, MR):
MC'/MR'
THR_MC_Dn(MC)/
THR_MR_Dn(MR)
THR_MC_Up(MC)/
THR_MR_Up(MR)
CODEC_MODE_3
18,5 dB
+
CODEC_MODE_2
12,5 dB
20,5 dB
CODEC_MODE_1
14.5 dB
The SS transmits Standard Test Signal C1 on the traffic channel using the Initial Codec Mode (ICM).
The SS continuously sends a CMC corresponding to the highest codec mode (CODEC_MODE_3).
The SS commands the MS to loop back in band signalling code words by closing a Loop I.
Specific PICS Statements
•
PIXIT Statements
•
|
683b5b8a98f7b1390ddd5516ea9247a2
|
51.010-1
|
14.4.29.4.2 Procedure
|
a) In addition to the wanted signal, the SS produces 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. Its amplitude is 6 dB below that of the wanted signal (9 dB – 3 dB less attenuation on the interfering signal).
The fading characteristic of the wanted and the interfering signal is TUHigh non-hoping (TU50 for T-GSM 810, GSM 850 and GSM 900, TU60 for GSM 700).
b) The SS shall change the Codec Mode Indication and Codec Mode Command at to the neighbour mode every 22 speech frames (440 ms) by following a scanning pattern (1->2->3->3->2->1). CMI should initially be increased. CMC should initially be decreased. The CMI/CMC shall be repeated until the minimum required number of frame samples has been sent to the MS.
c) The SS compares the in band signalling code words/frames it sends to the MS with the in band signalling code words/frames which are looped back from the receiver after demodulation and decoding, and checks for in band signalling (CMI/CMC) frame errors.
d) The SS determines the frame error events by examining sequences of at least the minimum number of samples of consecutive frames. All frames should be considered when computing the frame error rate: those corresponding to a downlink CMI/CMC transitions and those without downlink CMI/CMC transitions.
NOTE: The delays associated with Loop I are not specified, and will be MS implementation dependant. Loop I should be considered as having two separate parts (DL CMC -> UL CMI and DL CMI -> UL CMR). The delays associated with the two parts may differ. The SS should ensure that the correctly looped in band bits are compared. The delays associated with Loop I will remain constant for the duration of the test, thus every UL frame received by the SS will have only one possible expected value.
Maximum/Minimum Duration of Test
Maximum/minimum: 45 minutes (GSM 700, GSM850, GSM900).
Maximum/minimum: 80 minutes (DCS1800, PCS1900).
|
683b5b8a98f7b1390ddd5516ea9247a2
|
51.010-1
|
14.4.29.5 Test requirements
|
The frame error rate measured in this test shall not exceed the test limit error rate values given in table 14.4.29-1 or 14.4.29-2.
Co-channel rejection tests with a frequency condition noted as "@ndB" are performed with the interfering frequency transmitted with an additional n dB attenuation, see 3GPP TS 45.005.
Table 14.4.29-1: Limits for GSM 400, GSM 700, T-GSM 810, GSM 850 and GSM 900 co-channel rejection
Channel
Propagation
condition
Test limit
error rate %
Minimum No.
of samples
TCH/WFS-INB (FER)
TUhigh/No FH@-3 dB
0.271
127081
Table 14.4.29-2: Limits for DCS 1800 and PCS 1 900 co-channel rejection
Channel
Propagation
condition
Test limit
error rate %
Minimum No.
of samples
TCH/WFS-INB (FER)
TUhigh/No FH@-3 dB
0.148
232982
|
683b5b8a98f7b1390ddd5516ea9247a2
|
51.010-1
|
14.4.30 Co-channel interference - O-FACCH/F
| |
683b5b8a98f7b1390ddd5516ea9247a2
|
51.010-1
|
14.4.30.1 Definition
|
The co-channel interference performance 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 modulated signal, both signals being at the nominal frequency of the receiver.
|
683b5b8a98f7b1390ddd5516ea9247a2
|
51.010-1
|
14.4.30.2 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 performance requirements for GSM 400 and GSM 700 systems are as for GSM 900 in table 2, 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. The actual interference ratio is defined as the interference ratio for which this performance is met.
For GMSK modulated channels, packet switched and ECSD and speech channels (AMR-WB), and for 8-PSK modulated channels, packet switched and ECSD and 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 2a, 2d, 2e and 2j (GMSK), 2b and 2c, 2d and 2e, and 2k (8-PSK) respectively, according to the type of channel, the propagation condition and type of equipment.
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 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 fast associated control channels (O-FACCH/F, O-FACCH/H)
FER
:
£ 5%
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.
3GPP 45.005 clauses 6.2 and 6.3
NOTE: The tables 1 and 2 mentioned above can be found in 3GPP 45.005 clause 6.7
|
683b5b8a98f7b1390ddd5516ea9247a2
|
51.010-1
|
14.4.30.3 Test purpose
|
To verify that the MS does not exceed the conformance requirement under propagation condition TUlow with an allowance for the statistical significance of the test, for channel combinations O-TCH/WFS 12.65.
|
683b5b8a98f7b1390ddd5516ea9247a2
|
51.010-1
|
14.4.30.4 Method of test
| |
683b5b8a98f7b1390ddd5516ea9247a2
|
51.010-1
|
14.4.30.4.1 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 12,65 kbit/s.
The SS transmits Standard Test Signal C1 on the traffic channel (wanted signal).
|
683b5b8a98f7b1390ddd5516ea9247a2
|
51.010-1
|
14.4.30.4.2 Procedure
|
a) In addition to the wanted signal, the SS produces 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. Its amplitude is 15,5 dB below that of the wanted signal.
The fading characteristic of the wanted and the interfering signal is TUlow.
d) The SS sends a Layer 3 message which does not require a Layer 3 response from the MS. Due to the co-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.
|
683b5b8a98f7b1390ddd5516ea9247a2
|
51.010-1
|
14.4.30.5 Test requirements
|
The error rate measured in this test shall not exceed the test limit error rate values given in table 14.4.30-1.
Table 14.4.30-1: Limits for co-channel rejection
Channel
Type of measurement
Propagation condition
Test limit error rate %
Minimum No. of samples
O-FACCH/F
FER
TUlow/No FH
18
25 000
|
683b5b8a98f7b1390ddd5516ea9247a2
|
51.010-1
|
14.4.31 Co-channel rejection – Repeated FACCH/F
| |
683b5b8a98f7b1390ddd5516ea9247a2
|
51.010-1
|
14.4.31.1 Definition
|
The co-channel rejection 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 modulated signal, both signals being at the nominal frequency of the receiver.
|
683b5b8a98f7b1390ddd5516ea9247a2
|
51.010-1
|
14.4.31.2 Conformance requirement
|
The reference performance for Repeated Downlink FACCH and Repeated SACCH shall be FER £ 5%.
3GPP TS 45.005 subclause 6.2
When calculating FER, a FACCH frame and its repetition or a SACCH frame and its repetition respectively, shall be counted as one frame and a frame erasure shall be counted when neither the FACCH frame nor its repetition or neither the SACCH frame nor its repetition respectively, could be successfully decoded.
3GPP TS 45.005 subclause 6.2.
For Repeated Downlink FACCH and Repeated SACCH (see 3GPP TS 44.006), the minimum interference ratio for which the reference performance for co channel interference (C/Ic) shall be met is specified in table 2p according to the propagation condition and type of equipment. The performance requirements for GSM 400 and GSM 700 systems are as for GSM 900 in table 2a, 2b, 2c, 2d, 2e, 2j, 2k, 2m and 2p 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.
3GPP TS 45.005 subclause 6.3
For Repeated Downlink FACCH and Repeated SACCH (see 3GPP TS 44.006), the wanted input signal level shall be: -93 dBm + Ir + Corr, where:
Ir = the interference ratio according to table 2p.
Corr = the correction factor for reference performance according to subclause 6.2
3GPP TS 45.005 subclause 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
For T-GSM 810 the requirements for GSM 900 shall apply, apart for those parameters for which a separate requirement exists.
3GPP TS 45.005 subclause 2.
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683b5b8a98f7b1390ddd5516ea9247a2
|
51.010-1
|
14.4.31.3 Test purpose
|
To verify that the MS does not exceed the conformance requirements under propagation condition TUhigh with an allowance for the statistical significance of the test.
|
683b5b8a98f7b1390ddd5516ea9247a2
|
51.010-1
|
14.4.31.4 Method of test
| |
683b5b8a98f7b1390ddd5516ea9247a2
|
51.010-1
|
14.4.31.4.1 Initial conditions
|
A call is set up according to the generic call set up procedure on a TCH/F with an ARFCN in the mid ARFCN range. The power control level is set to maximum power.
The SS shall use Repeated FACCH for command and response frames for the duration of the test.
Each pair of FACCHs are counted as a single sample.
The SS transmits Standard Test Signal C1 on the traffic channel (wanted signal).
Specific PICS statements:
- TSPC_Type_SmallMS
- TSPC_Type_DCS_Class1
- TSPC_Type_DCS_Class2
- TSPC_Type_DCS_Class3
- TSPC_Type_PCS_Class1
- TSPC_Type_PCS_Class2
PIXIT statements:
-
|
683b5b8a98f7b1390ddd5516ea9247a2
|
51.010-1
|
14.4.31.4.2 Procedure
|
a) In addition to the wanted signal, the SS produces 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 shall be set to (-93 + Corr) dB (where Corr is the correction factor from the table above). Throughout the test the C/I (interference ratio) shall be set by modifying the wanted signal.
The fading characteristic of the wanted and the interfering signal is TUhigh.
b) The SS sends a Layer 3 message which does not require a Layer 3 response from the MS. Due to the co-channel interference, the MS may not be able to acknowledge an RR frame and the L2 entity of the SS will repeat the Layer 2 frame. Each retransmitted 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.
Maximum/Minimum Duration of Test
Maximum: 12 minutes.
Minimum: 10 minutes (GSM700, GSM850, GSM900), 5 minutes (DCS1800, PCS900)
|
683b5b8a98f7b1390ddd5516ea9247a2
|
51.010-1
|
14.4.31.5 Test requirements
|
The error rate measured in this test shall not exceed the test limit error rate values given in table 14.4.31-2
For more information on statistical testing of FER performance, especially the definitions of limit lines refer to Annex A7.
Table 14.4.31-1: Minimum test times due to TU high fading conditions
Full Rate 50 km/h
Frequency
0,7
0,85
0,9
1,8
1,9
GHz
Wavelength
-
0,35
0,33
0,17
0,16
m
min test time
-
604
570
285
270
s
-
00:10:04
00:09:30
00:04:45
00:04:30
hh:mm:ss
Full Rate 60 km/h
Frequency
0,7
0,85
0,9
1,8
1,9
GHz
Wavelength
0,43
-
-
-
-
m
min test time
611
-
-
-
-
s
00:10:11
-
-
-
-
hh:mm:ss
NOTE: Minimum test time calculation due to fading is based on the best 50/3 frame rate relation in table 14.4.31-3
Table 14.4.31-2: Test Limits for Repeated FACCH/F sensitivity
Channel
Type of measurement
Propagation condition
Original
FER requirement
Derived test limit %
Target number of samples
FACCH/F
FER
TUhigh/No FH
5,00
6,17
5592
Table 14.4.31-3: Maximum test times
Maximum test time (best rate 50/3 per second) (s)
Maximum test time (best rate 50/3 per second) (hh:mm:ss)
Maximum test time (worst rate 50/6 per second) (s)
Maximum test time (worst rate 50/6 per second) (hh:mm:ss)
336
00:05:36
671
00:11:11
|
683b5b8a98f7b1390ddd5516ea9247a2
|
51.010-1
|
14.4.32 Co-channel rejection – Repeated SACCH
| |
683b5b8a98f7b1390ddd5516ea9247a2
|
51.010-1
|
14.4.32.1 Definition
|
The co-channel rejection 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 modulated signal, both signals being at the nominal frequency of the receiver.
|
683b5b8a98f7b1390ddd5516ea9247a2
|
51.010-1
|
14.4.32.2 Conformance requirement
|
The reference performance for Repeated Downlink FACCH and Repeated SACCH shall be FER £ 5%.
3GPP TS 45.005 subclause 6.2
When calculating FER, a FACCH frame and its repetition or a SACCH frame and its repetition respectively, shall be counted as one frame and a frame erasure shall be counted when neither the FACCH frame nor its repetition or neither the SACCH frame nor its repetition respectively, could be successfully decoded.
3GPP TS 45.005 subclause 6.2.
For Repeated Downlink FACCH and Repeated SACCH (see 3GPP TS 44.006), the minimum interference ratio for which the reference performance for co channel interference (C/Ic) shall be met is specified in table 2p according to the propagation condition and type of equipment. The performance requirements for GSM 400 and GSM 700 systems are as for GSM 900 in table 2a, 2b, 2c, 2d, 2e, 2j, 2k, 2m and 2p 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.
3GPP TS 45.005 subclause 6.3
For Repeated Downlink FACCH and Repeated SACCH (see 3GPP TS 44.006), the wanted input signal level shall be: -93 dBm + Ir + Corr, where:
Ir = the interference ratio according to table 2p.
Corr = the correction factor for reference performance according to subclause 6.2
3GPP TS 45.005 subclause 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
For T-GSM 810 the requirements for GSM 900 shall apply, apart for those parameters for which a separate requirement exists.
3GPP TS 45.005 subclause 2.
|
683b5b8a98f7b1390ddd5516ea9247a2
|
51.010-1
|
14.4.32.3 Test purpose
|
To verify that the MS does not exceed the conformance requirements under propagation condition TUhigh with an allowance for the statistical significance of the test.
|
683b5b8a98f7b1390ddd5516ea9247a2
|
51.010-1
|
14.4.32.4 Method of test
|
For details on Repeated SACCH Layer 1 test method, please refer to Annex 10.
|
683b5b8a98f7b1390ddd5516ea9247a2
|
51.010-1
|
14.4.32.4.1 Initial conditions
|
A call is set up according to the generic call set up procedure on a TCH/F with an ARFCN in the mid ARFCN range. The power control level is set to maximum power.
The SS shall use Repeated SACCH for all SACCH block on the downlink for the duration of the test.
Each pair of SACCH blocks (i.e. one Repeated SACCH block-pair) shall be counted as a single sample.
The SS shall send different PCL for each sample following Table 14.4.32-1 for the duration of the test.
The SS transmits Standard Test Signal C1 on the traffic channel (wanted signal).
Specific PICS statements:
- TSPC_Type_SmallMS
- TSPC_Type_DCS_Class1
- TSPC_Type_DCS_Class2
- TSPC_Type_DCS_Class3
- TSPC_Type_PCS_Class1
- TSPC_Type_PCS_Class2
PIXIT statements:
-
|
683b5b8a98f7b1390ddd5516ea9247a2
|
51.010-1
|
14.4.32.4.2 Procedure
|
a) In addition to the wanted signal, the SS produces 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 shall be set to (-93 + Corr) dB (where Corr is the correction factor from 14.4.32.2). Throughout the test the C/I (interference ratio) shall be set by modifying the wanted signal.
The fading characteristic of the wanted and the interfering signal is TUhigh/NoFH.
b) Following the reception of the last burst of the MS UL SACCH corresponding to the second SACCH block of a repeated SACCH interval, the SS shall compute the PCL value to use in the SS DL SACCH blocks for the next repeated SACCH interval using Table 14.4.32-1.
i) The first two columns of Table 14.4.32-1 are inputs, the last column is a output.
ii) SACCH blocks are grouped into sets of 2 consecutive SACCH blocks which is called a repeated SACCH interval.
iii) Last commanded PCL by SS refers to the PCL used in the DL SACCH L1 headers for repeated SACCH interval N
iv) Corresponding reported MS PCL refers to the PCL reported in the UL SACCH L1 header of second SACCH block on repeated SACCH interval N
v) Next commanded PCL by SS refers to the PCL that the SS will use in the DL SACCH L1 headers for repeated SACCH interval N+1..
Table 14.4.32-1: Power Control Level Used by SS
Last commanded PCL by SS
Corresponding Reported MS PCL
Next commanded PCL by SS
7
7
8
7
8
9
7
9
8
8
7
9
8
8
9
8
9
7
9
7
8
9
8
7
9
9
7
c) The SS compares the MS reported PCL in the uplink SACCH L1 header of the Repeated SACCH block against the expected PCL (based on the previously commanded PCL in the downlink SACCH L1 header taking into account round-trip delays). If the MS reported PCL in the uplink SACCH L1 header is different than the expected PCL, this will invoke a frame erasure event.
d) The SS determines the frame erasure events during at least the minimum number of samples of SACCH frames.
NOTE: These frames will be consecutive and it is expected that the statistical significance of the tests will not be unduly degraded.
Maximum/Minimum Duration of Test (hh:mm)
Maximum: 02:43 (GSM700)
Minimum: 01:12 (PCS 1900)
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683b5b8a98f7b1390ddd5516ea9247a2
|
51.010-1
|
14.4.32.5 Test requirements
|
The error rate measured in this test shall not exceed the test limit error rate values given in table 14.4.32-2.
For more information on statistical testing of FER performance, especially the definitions of limit lines refer to Annex A7.
Table 14.2.25-1: Minimum test times due to TU high fading conditions
Full Rate 50 km/h
Frequency
0,7
0,85
0,9
1,8
1,9
GHz
Wavelength
-
0,35
0,33
0,17
0,16
m
min test time
-
9676
9138
4569
4329
s
-
02:41:16
02:32:18
01:16:09
01:12:09
hh:mm:ss
Full Rate 60 km/h
Frequency
0,7
0,85
0,9
1,8
1,9
GHz
Wavelength
0,43
-
-
-
-
m
min test time
9791
-
-
-
-
s
02:43:11
-
-
-
-
hh:mm:ss
NOTE: Minimum test time calculation due to fading is based on the 960 ms schedule for two SACCH frames
Table 14.4.32-2: Test Limits for Repeated SACCH sensitivity
Channel
Type of measurement
Propagation condition
Original
FER requirement
Derived test limit %
Target number of samples
SACCH
FER
TUhigh/No FH
5,00
6,17
5592
Table 14.4.32-3: Minimum/Maximum test times
Minimum test time (best rate 2/2 per second) (s)
Minimum test time (best rate 2/2 per second) (hh:mm:ss)
5368
01:29:28
|
683b5b8a98f7b1390ddd5516ea9247a2
|
51.010-1
|
14.5 Adjacent channel rejection
| |
683b5b8a98f7b1390ddd5516ea9247a2
|
51.010-1
|
14.5.1 Adjacent channel rejection - speech channels
| |
683b5b8a98f7b1390ddd5516ea9247a2
|
51.010-1
|
14.5.1.1 TCH/FS
| |
683b5b8a98f7b1390ddd5516ea9247a2
|
51.010-1
|
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.
|
683b5b8a98f7b1390ddd5516ea9247a2
|
51.010-1
|
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.
|
683b5b8a98f7b1390ddd5516ea9247a2
|
51.010-1
|
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.
|
683b5b8a98f7b1390ddd5516ea9247a2
|
51.010-1
|
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.
|
683b5b8a98f7b1390ddd5516ea9247a2
|
51.010-1
|
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.
|
683b5b8a98f7b1390ddd5516ea9247a2
|
51.010-1
|
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.
|
683b5b8a98f7b1390ddd5516ea9247a2
|
51.010-1
|
14.5.1.1.3 Test purpose
| |
683b5b8a98f7b1390ddd5516ea9247a2
|
51.010-1
|
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.
|
683b5b8a98f7b1390ddd5516ea9247a2
|
51.010-1
|
14.5.1.1.4 Method of test
| |
683b5b8a98f7b1390ddd5516ea9247a2
|
51.010-1
|
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).
|
683b5b8a98f7b1390ddd5516ea9247a2
|
51.010-1
|
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.
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683b5b8a98f7b1390ddd5516ea9247a2
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51.010-1
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14.5.1.1.5 Test requirements
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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
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