14.2.28 Reference sensitivity TCH/HS in VAMOS configuration

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

14.2.28.1 Definition

The reference sensitivity is the signal level at the MS receiver input at which a certain BER and FER must be achieved.

14.2.28.2 Conformance requirement

The reference performance in VAMOS Mode, shall be

– For half rate speech channels (TCH/HS, TCH/AHSx) FER:  1 %

3GPP TS 45.005 subclause 6.2.1a

For speech channels in VAMOS Mode, and their associated control channels, the minimum input signal level for which the reference performance shall be met is specified in table 1s, 1t, 1u, 1v, 1x and 1y according to the propagation condition and type of equipment. The levels are given for VAMOS I MS, VAMOS II MS, VAMOS III MS and normal BTS separately.

3GPP TS 45.005 subclause 6.2.1a

In addition for speech channels the residual class Ib BER and residual class II BER performance shall not exceed the specified values in table 1s, 1t, 1u, 1x, 1y and 1v at the corresponding signal level in dBm.

3GPP TS 45.005 subclause 6.2.1a

14.2.28.3 Test purpose

1. To verify that the MS does not exceed conformance requirements under propagation condition TUhigh with no frequency hopping with an allowance for the statistical significance of the test.

14.2.28.4 Method of test

NOTE 1: The BA list sent on the BCCH and SACCH will indicate at least six surrounding cells with at least one near to each band edge. It is not necessary to generate any of these BCCHs but, if provided the signal strengths of BCCHs shall be in the range 15 dBVemf(  ) to 35 dBVemf(  ).

NOTE 2: The ARFCN of any BCCH shall not be co-channel or on adjacent channels to the wanted traffic channel.

14.2.28.4.1 Initial conditions

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

The SS transmits a Standard Test Signal C1 (AQPSK) (wanted signal) on the active VAMOS subchannel (subchannel 2) using trainings sequence 5 from TSC set 2. The other VAMOS subchannel (subchannel 1) uses trainings sequences 5 from TSC set 1.

The SS commands the MS to create traffic channel loop back signalling erased frames.

Specific PICS Statements:

– VAMOS I supported (TSPC_VAMOS_Type1)

– VAMOS II supported (TSPC_VAMOS_Type2)

– VAMOS III supported (TSPC_VAMOS_Type3)

For MS indicating VAMOS III support, connect the SS to the MS antenna connectors according to Annex A1.1.6.2.

14.2.28.4.2 Procedure

a) The fading function is set to TUhigh for MS indicating VAMOS I or VAMOS II support and TUhigh/(Corr.=0, AGI=0 dB as per 3GPP TS 45.005 Annex Q.7) for MS indicating VAMOS III support.

b) The SS sets SCPIR_DL to +4 dB.

c) Depending of the indicated VAMOS type and the relevant antenna correlation and antenna gain imbalance values, the SS sets the amplitude of the wanted signal to reference sensitivity level specified by level in table 14.2.28-1 through 14.2.28-8.

d) 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.

e) The SS determines the number of residual bit error events for the bits of class Ib, by examining sequences of at least the minimum number of samples of consecutive bits of class Ib. Bits are taken only from those frames not signalled as erased.

f) The SS determines the number of residual bit error events for the bits of class II, by examining sequences of at least the minimum number of samples of consecutive bits of class II. Bits are taken only 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 repeats steps c) to g) with SCPIR_DL values 0 dB and -4 dB.

i) For MS indicating VAMOS II or VAMOS III support, step c) to g) shall be repeated with SCPIR_DL values -8 dB and -10 dB.

j) For MS indicating VAMOS III support, steps b) to i) are repeated with the SS fading function set in turn to TU high/(Corr.=0,7, AGI=-6 dB as per 3GPP TS 45.005 Annex Q.7).

14.2.28.5 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 (A7.1.3.2).

Before limit checking is valid the minimum test time due to fading needs to be considered:

Table 14.2.28-0: Minimum test times due to TU high fading conditions

Fading speed 50km/h

Frequency /MHz

850

900

1800

1900

Wave length / m

0,35

0,33

0,17

0,16

Min. Test time /s

403

380

190

180

hh:mm:ss

00:06:43

00:06:20

00:03:10

00:03:00

The error rates measured for different SCPIR and under propagation condition shall not exceed the test limit error rate values given in table 14.2.28-1 through 14.2.28-8 depending on the indicated VAMOS type and the relevant antenna correlation and antenna gain imbalance values.

Table 14.2.28-1: Limits for GSM 850 and GSM 900 sensitivity VAMOS I

Channel

SCPIR_DL
/ dB

Level
/ dBm

Error rate

Samples per second

Orig. BER
requirements

Derived test
limit

Target number
of samples

Target test time
(hh:mm:ss)

TCH/HS

4

-99

FER

50

0,0100

0,012340

27958

00:09:20

RBER1b

3650

0,0031

0,003825

90187

00:00:25

RBER2

850

0,0570

0,070338

4905

00:00:06

0

-96,5

FER

50

0,0100

0,012340

27958

00:09:20

RBER1b

3650

0,0020

0,002468

139789

00:00:39

RBER2

850

0,0610

0,075274

4583

00:00:06

-4

-92,5

FER

50

0,0100

0,012340

27958

00:09:20

RBER1b

3650

0,0020

0,002468

139789

00:00:39

RBER2

850

0,0560

0,069104

4992

00:00:06

Table 14.2.28-2: Limits for DCS 1 800 and PCS 1 900 sensitivity VAMOS I

Channel

SCPIR_DL
/ dB

Level
/ dBm

Error rate

Samples per second

Orig. BER
requirements

Derived test
limit

Target number
of samples

Target test time
(hh:mm:ss)

TCH/HS

4

-98,5

FER

50

0,0100

0,012340

27958

00:09:20

RBER1b

3650

0,0027

0,003332

103548

00:00:29

RBER2

850

0,0540

0,066636

5177

00:00:07

0

-96

FER

50

0,0100

0,012340

27958

00:09:20

RBER1b

3650

0,0027

0,003332

103548

00:00:29

RBER2

850

0,0530

0,065402

5275

00:00:07

-4

-92,5

FER

50

0,0100

0,012340

27958

00:09:20

RBER1b

3650

0,0020

0,002468

139789

00:00:39

RBER2

850

0,0550

0,067870

5083

00:00:06

Table 14.2.28-3: Limits for GSM 850 and GSM 900 sensitivity VAMOS II

Channel

SCPIR_DL
/ dB

Level
/ dBm

Error rate

Samples per second

Orig. BER
requirements

Derived test
limit

Target number
of samples

Target test time
(hh:mm:ss)

TCH/HS

4

-100

FER

50

0,0100

0,012340

27958

00:09:20

RBER1b

3650

0,0012

0,001481

232982

00:01:04

RBER2

850

0,0527

0,065032

5305

00:00:07

0

-97,5

FER

50

0,0100

0,012340

27958

00:09:20

RBER1b

3650

0,0012

0,001481

232982

00:01:04

RBER2

850

0,0494

0,060960

5659

00:00:07

-4

-96,5

FER

50

0,0100

0,012340

27958

00:09:20

RBER1b

3650

0,0011

0,001357

254162

00:01:10

RBER2

850

0,0484

0,059726

5776

00:00:07

-8

-93,5

FER

50

0,0100

0,012340

27958

00:09:20

RBER1b

3650

0,0015

0,001851

186386

00:00:52

RBER2

850

0,0565

0,069721

4948

00:00:06

-10

-91,5

FER

50

0,0100

0,012340

27958

00:09:20

RBER1b

3650

0,0015

0,001851

186386

00:00:52

RBER2

850

0,0598

0,073793

4675

00:00:06

Table 14.2.28-4: Limits for DCS 1 800 and PCS 1 900 sensitivity VAMOS II

Channel

SCPIR_DL
/ dB

Level
/ dBm

Error rate

Samples per second

Orig. BER
requirements

Derived test
limit

Target number
of samples

Target test time
(hh:mm:ss)

TCH/HS

4

-99

FER

50

0,0100

0,012340

27958

00:09:20

RBER1b

3650

0,0023

0,002838

121556

00:00:34

RBER2

850

0,0601

0,074163

4652

00:00:06

0

-97

FER

50

0,0100

0,012340

27958

00:09:20

RBER1b

3650

0,0017

0,002098

164458

00:00:46

RBER2

850

0,0557

0,068734

5019

00:00:06

-4

-95,5

FER

50

0,0100

0,012340

27958

00:09:20

RBER1b

3650

0,0020

0,002468

139789

00:00:39

RBER2

850

0,0550

0,067870

5083

00:00:06

-8

-91,5

FER

50

0,0100

0,012340

27958

00:09:20

RBER1b

3650

0,0021

0,002591

133133

00:00:37

RBER2

850

0,0568

0,070091

4922

00:00:06

-10

-90

FER

50

0,0100

0,012340

27958

00:09:20

RBER1b

3650

0,0023

0,002838

121556

00:00:34

RBER2

850

0,0598

0,073793

4675

00:00:06

Table 14.2.28-5: Limits for GSM 850 and GSM 900 sensitivity VAMOS III (Corr=0.0, AGI=0 dB)

Channel

SCPIR_DL
/ dB

Level
/ dBm

Error rate

Samples per second

Orig. BER
requirements

Derived test
limit

Target number
of samples

Target test time
(hh:mm:ss)

TCH/HS

4

-104,5

FER

50

0,0100

0,012340

27958

00:09:20

RBER1b

3650

0,0012

0,001481

232982

00:01:04

RBER2

850

0,0527

0,065032

5305

00:00:07

0

-102,5

FER

50

0,0100

0,012340

27958

00:09:20

RBER1b

3650

0,0012

0,001481

232982

00:01:04

RBER2

850

0,0494

0,060960

5659

00:00:07

-4

-100,5

FER

50

0,0100

0,012340

27958

00:09:20

RBER1b

3650

0,0011

0,001357

254162

00:01:10

RBER2

850

0,0484

0,059726

5776

00:00:07

-8

-98

FER

50

0,0100

0,012340

27958

00:09:20

RBER1b

3650

0,0015

0,001851

186386

00:00:52

RBER2

850

0,0565

0,069721

4948

00:00:06

-10

-96,5

FER

50

0,0100

0,012340

27958

00:09:20

RBER1b

3650

0,0015

0,001851

186386

00:00:52

RBER2

850

0,0598

0,073793

4675

00:00:06

Table 14.2.28-6: Limits for DCS 1 800 and PCS 1 900 sensitivity VAMOS III (Corr=0.0, AGI=0 dB)

Channel

SCPIR_DL
/ dB

Level
/ dBm

Error rate

Samples per second

Orig. BER
requirements

Derived test
limit

Target number
of samples

Target test time
(hh:mm:ss)

TCH/HS

4

-104

FER

50

0,0100

0,012340

27958

00:09:20

RBER1b

3650

0,0023

0,002838

121556

00:00:34

RBER2

850

0,0601

0,074163

4652

00:00:06

0

-102

FER

50

0,0100

0,012340

27958

00:09:20

RBER1b

3650

0,0023

0,002838

121556

00:00:34

RBER2

850

0,0601

0,074163

4652

00:00:06

-4

-100,5

FER

50

0,0100

0,012340

27958

00:09:20

RBER1b

3650

0,0023

0,002838

121556

00:00:34

RBER2

850

0,0601

0,074163

4652

00:00:06

-8

-97,5

FER

50

0,0100

0,012340

27958

00:09:20

RBER1b

3650

0,0023

0,002838

121556

00:00:34

RBER2

850

0,0601

0,074163

4652

00:00:06

-10

-96

FER

50

0,0100

0,012340

27958

00:09:20

RBER1b

3650

0,0023

0,002838

121556

00:00:34

RBER2

850

0,0601

0,074163

4652

00:00:06

Table 14.2.28-7: Limits for GSM 850 and GSM 900 sensitivity VAMOS III (Corr=0.7, AGI=-6 dB)

Channel

SCPIR_DL
/ dB

Level
/ dBm

Error rate

Samples per second

Orig. BER
requirements

Derived test
limit

Target number
of samples

Target test time
(hh:mm:ss)

TCH/HS

4

-101

FER

50

0,0100

0,012340

27958

00:09:20

RBER1b

3650

0,0012

0,001481

232982

00:01:04

RBER2

850

0,0527

0,065032

5305

00:00:07

0

-99

FER

50

0,0100

0,012340

27958

00:09:20

RBER1b

3650

0,0012

0,001481

232982

00:01:04

RBER2

850

0,0494

0,060960

5659

00:00:07

-4

-97,5

FER

50

0,0100

0,012340

27958

00:09:20

RBER1b

3650

0,0011

0,001357

254162

00:01:10

RBER2

850

0,0484

0,059726

5776

00:00:07

-8

-94,5

FER

50

0,0100

0,012340

27958

00:09:20

RBER1b

3650

0,0011

0,001357

254162

00:01:10

RBER2

850

0,0484

0,059726

5776

00:00:07

-10

-93

FER

50

0,0100

0,012340

27958

00:09:20

RBER1b

3650

0,0011

0,001357

254162

00:01:10

RBER2

850

0,0484

0,059726

5776

00:00:07

Table 14.2.28-8: Limits for DCS 1 800 and PCS 1 900 sensitivity VAMOS III (Corr=0.7, AGI=-6 dB)

Channel

SCPIR_DL
/ dB

Level
/ dBm

Error rate

Samples per second

Orig. BER
requirements

Derived test
limit

Target number
of samples

Target test time
(hh:mm:ss)

TCH/HS

4

-100,5

FER

50

0,0100

0,012340

27958

00:09:20

RBER1b

3650

0,0023

0,002838

121556

00:00:34

RBER2

850

0,0601

0,074163

4652

00:00:06

0

-98,5

FER

50

0,0100

0,012340

27958

00:09:20

RBER1b

3650

0,0023

0,002838

121556

00:00:34

RBER2

850

0,0601

0,074163

4652

00:00:06

-4

-97

FER

50

0,0100

0,012340

27958

00:09:20

RBER1b

3650

0,0023

0,002838

121556

00:00:34

RBER2

850

0,0601

0,074163

4652

00:00:06

-8

-94

FER

50

0,0100

0,012340

27958

00:09:20

RBER1b

3650

0,0023

0,002838

121556

00:00:34

RBER2

850

0,0601

0,074163

4652

00:00:06

-10

-92

FER

50

0,0100

0,012340

27958

00:09:20

RBER1b

3650

0,0023

0,002838

121556

00:00:34

RBER2

850

0,0601

0,074163

4652

00:00:06