14.2.27 Reference sensitivity – TCH/FS – DARP Phase II

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

14.2.27.1 Definition

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

14.2.27.2 Conformance requirement

For Downlink Advanced Receiver Performance – phase II, the minimum input signal level for which the reference performance shall be met is specified in table 1j, 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 1j, 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 reference performance for Downlink Advanced Receiver Performance – phase II, shall be

– For speech channels (TCH/FS, TCH/AFSx, TCH/AHSx) FER:  1 %

– For packet switched channels (PDTCH) BLER:  10 %

In addition for speech channels the residual class Ib BER and residual class II BER performance shall not exceed the specified values in table 1j at the corresponding signal level in dbm.

3GPP TS 45.005, subclause 6.2.

14.2.27.3 Test purpose

To verify that the MS supporting DARP Ph2 does not exceed conformance requirement for FER, Rber1b and Rber2 under TUhigh/(Corr.=0,AGI=0) and HThigh/(Corr.=0,7,AGI=-6dB) propagation conditions with an allowance for the statistical significance of the test, for channel combination TCH/FS.

14.2.27.4 Method of test

14.2.27.4.1 Initial conditions

Connect the SS to the MS antenna connectors according to Annex A1.1.6.

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. RADIO_LINK_TIMEOUT is set to maximum.The SS transmits Standard Test Signal C1 on the traffic channel.

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

Specific PICS Statements:

PIXIT Statements:

14.2.27.4.2 Procedure

a) The fading function is set to TU high/(Corr.=0, AGI=0).

b) the SS sets the amplitude of the wanted signal to reference sensitivity level from table 1j in TS 45.005.

c) The SS compares the data of the signal that it sends to the MS with the signal which is looped back from the receiver after demodulation and decoding, and checks the frame erasure indication.

d) The SS 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.

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) Steps b) to f) are repeated with the SS fading function set in turn to HT high/(Corr.=0,7, AGI=-6dB).Maximum/Minimum Duration of Test

– Maximum: 20 minutes (GSM700, GSM850, GSM900) or 20 minutes ( DCS1800, PCS1900).

– Minimum: 6 minutes (GSM700, GSM850, GSM900) or 3 minutes (DCS1800, PCS1900).

14.2.27.5 Test requirements

The error rates measured shall not exceed the test limit error rate values given in table 14.2.27-3 through 14.2.27-6.

For more information on statistical testing of FER and BER/BLER performance, especially the definition of limit lines refer to Annex A7.

Table 14.2.27-1: 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

201

190

95

90

S

0:03:21

0:03:10

0:01:35

0:01:30

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

204

s

0:03:24

hh:mm:ss

Table 14.2.27-2: Minimum test times due to HT high fading conditions

Full Rate 100 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

214

122

101

95

48

45

S

0:3:34

0:2:02

0:1:41

0:1:35

0:0:48

0:0:45

hh:mm:ss

Full Rate 120 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

178

102

84

79

S

0:2:58

0:1:42

0:1:24

0:1:19

hh:mm:ss

Table 14.2.27-3: Statistical test limits for GSM 700, T-GSM 810, GSM 850 and GSM 900 TU high no FH/ (Corr.=0, AGI=0).

0.4 to 0.9GHz

Frames per s

Orig. BER

Derived

Target number

Target test

Target test time

Channel

bits per sec

Class x per s

requirement

test limit

of samples

time (s)

(hh:mm:ss)

TCH/FS

FER

13000

50

0,010000

0.012340

27958

560

00:09:20

Rber1b

13000

9100

0,000700

0,000863

399769

44

00:00:44

Rber2

13000

3900

0,047900

0,059109

5837

2

00:00:02

Table 14.2.27-4: Statistical test limits for GSM 700, T-GSM 810, GSM 850 and GSM 900 HT high no FH/ (Corr.=0,7, AGI=-6dB).

0.4 to 0.9GHz

Frames per s

Orig. BER

Derived

Target number

Target test

Target test time

Channel

bits per sec

Class x per s

requirement

Test limit

of samples

time (s)

(hh:mm:ss)

TCH/FS

FER

13000

50

0,010000

0.012340

27958

560

00:09:20

Rber1b

13000

9100

0,000800

0,000987

349544

39

00:00:39

Rber2

13000

3900

0,060900

0,075151

4591

2

00:00:02

Table 14.2.27-5: Statistical test limits for DCS 1 800 and PCS 1 900 TU high no FH/ (Corr.=0, AGI=0).

1.8 and 1.9GHz

Frames per s

Orig. BER

Derived

Target number

Target test

Target test time

Channel

bits per sec

Class x per s

requirement

Test limit

of samples

time (s)

(hh:mm:ss)

TCH/FS

FER

13000

50

0.010000

0.012340

27958

560

00:09:20

Rber1b

13000

9100

0,000800

0,000987

349544

39

00:00:39

Rber2

13000

3900

0,060100

0,074163

4652

2

00:00:02

Table 14.2.27-6: Statistical test limits for DCS 1 800 and PCS 1 900 HT high no FH/ (Corr.=0,7, AGI=-6dB).

1.8 and 1.9GHz

Frames per s

Orig. BER

Derived

Target number

Target test

Target test time

Channel

bits per sec

Class x per s

requirement

Test limit

of samples

time (s)

(hh:mm:ss)

TCH/FS

FER

13000

50

0,010000

0.012340

27958

560

00:09:20

Rber1b

13000

9100

0,000900

0,001111

310532

35

00:00:35

Rber2

13000

3900

0,060600

0,074780

4614

2

00:00:02