ETSI TS 102 933-2 V2.1.1 (2015-06)

Railway Telecommunications (RT); GSM-R improved receiver parameters; Part 2: Radio conformance testing

RTS/RT-0033

General Information

• Status: Published
• Publication Date: 22-Jun-2015
• Technical Committee: RT - Railway telecommunications
• Current Stage: 12 - Completion
• Due Date: 25-Jun-2015
• Completion Date: 23-Jun-2015

Standards Content (Sample)

ETSI TS 102 933-2 V2.1.1 (2015-06)






TECHNICAL SPECIFICATION
Railway Telecommunications (RT);
GSM-R improved receiver parameters;
Part 2: Radio conformance testing

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2 ETSI TS 102 933-2 V2.1.1 (2015-06)



Reference
RTS/RT-0033
Keywords
ER-GSM, R-GSM

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3 ETSI TS 102 933-2 V2.1.1 (2015-06)
Contents
Intellectual Property Rights . 5
Foreword . 5
Modal verbs terminology . 5
1 Scope . 6
2 References . 6
2.1 Normative references . 6
2.2 Informative references . 6
3 Abbreviations . 7
4 Receiver characteristics for 8 Watt mobiles . 7
4.0 General . 7
4.1 Reference sensitivity . 7
4.2 Blocking with CW interfering Signals . 8
4.2.1 Blocking and spurious response - speech channels . 8
4.2.1.1 Definition and applicability . 8
4.2.1.2 Conformance requirement . 8
4.2.1.3 Test purpose . 8
4.2.1.4 Method of test . 9
4.2.1.4.1 Initial conditions . 9
4.2.1.4.2 Procedure . 9
4.2.1.5 Test requirements . 10
4.2.2 Blocking and spurious response - control channels . 11
4.2.2.1 Definition and applicability . 11
4.2.2.2 Conformance requirement . 11
4.2.2.3 Test purpose . 12
4.2.2.4 Method of test . 12
4.2.2.4.1 Initial conditions . 12
4.2.2.4.2 Procedure . 12
4.2.2.5 Test requirements . 13
4.3 Blocking with Broadband interfering Signals . 14
4.3.1 Blocking and spurious response - speech channels . 14
4.3.1.1 Definition and applicability . 14
4.3.1.2 Conformance requirement . 14
4.3.1.3 Test purpose . 14
4.3.1.4 Method of test . 15
4.3.1.4.1 Initial conditions . 15
4.3.1.4.2 Procedure . 15
4.3.1.5 Test requirements . 15
4.3.2 Blocking and spurious response - control channels . 15
4.3.2.1 Definition and applicability . 15
4.3.2.2 Conformance requirement . 16
4.3.2.3 Test purpose . 16
4.3.2.4 Method of test . 16
4.3.2.4.1 Initial conditions . 16
4.3.2.4.2 Procedure . 16
5 Receiver characteristics for 2 Watt mobiles . 17
5.0 General . 17
5.1 Reference sensitivity . 17
5.2 Blocking with CW interfering Signals . 18
5.2.1 Blocking and spurious response - speech channels . 18
5.2.1.1 Definition and applicability . 18
5.2.1.2 Conformance requirement . 18
5.2.1.3 Test purpose . 18
5.2.1.4 Method of test . 18
5.2.1.4.1 Initial conditions . 18
ETSI

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4 ETSI TS 102 933-2 V2.1.1 (2015-06)
5.2.1.4.2 Procedure . 19
5.2.1.5 Test requirements . 20
5.2.2 Blocking and spurious response - control channels . 21
5.2.2.1 Definition and applicability . 21
5.2.2.2 Conformance requirement . 21
5.2.2.3 Test purpose . 22
5.2.2.4 Method of test . 22
5.2.2.4.1 Initial conditions . 22
5.2.2.4.2 Procedure . 22
5.2.2.5 Test requirements . 23
5.3 Blocking with Broadband interfering Signals . 24
5.3.1 Blocking and spurious response - speech channels . 24
5.3.1.1 Definition and applicability . 24
5.3.1.2 Conformance requirement . 24
5.3.1.3 Test purpose . 24
5.3.1.4 Method of test . 25
5.3.1.4.1 Initial conditions . 25
5.3.1.4.2 Procedure . 25
5.3.1.5 Test requirements . 25
5.3.2 Blocking and spurious response - control channels . 25
5.3.2.1 Definition and applicability . 25
5.3.2.2 Conformance requirement . 26
5.3.2.3 Test purpose . 26
5.3.2.4 Method of test . 26
5.3.2.4.1 Initial conditions . 26
5.3.2.4.2 Procedure . 26
5.3.2.5 Test requirements . 26
6 Other requirements . 27
Annex A (informative): Bibliography . 28
History . 29

ETSI

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5 ETSI TS 102 933-2 V2.1.1 (2015-06)
Intellectual Property Rights
IPRs essential or potentially essential to the present document may have been declared to ETSI. The information
pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found
in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in
respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web
server (http://ipr.etsi.org).
Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee
can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web
server) which are, or may be, or may become, essential to the present document.
Foreword
This Technical Specification (TS) has been produced by ETSI Technical Committee Railway Telecommunications
(RT).
The present document is part 2 of a multi-part deliverable covering the Railway Telecommunications (RT); GSM-R
improved receiver parameters, as identified below:
Part 1: "Requirements for radio reception";
Part 2: "Radio conformance testing".
Modal verbs terminology
In the present document "shall", "shall not", "should", "should not", "may", "need not", "will", "will not", "can" and
"cannot" are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of
provisions).
"must" and "must not" are NOT allowed in ETSI deliverables except when used in direct citation.
ETSI

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6 ETSI TS 102 933-2 V2.1.1 (2015-06)
1 Scope
The present document describes the technical characteristics and methods of testing the improved receiver performance
for professional mobile stations 8 Watt (cab radio and EDOR) and 2 Watt professional small mobile station (GPH, OPH
and OPS), for the Pan European digital cellular communications system and Personal Communication Systems (PCS)
operating in the 900 MHz band (GSM 900), standardized by ETSI Special Mobile Group (SMG).
The present document covers the requirements for testing the improved GSM-R receiver in order to provide sufficient
performance for mobile equipment.
It does not necessarily include all the characteristics which may be required by a user or subscriber, nor does it
necessarily represent the optimum performance achievable.
The present document is part of the GSM-series of technical specifications. The present document neither replaces any
of the other GSM technical specifications or GSM related ETSs or ENs, nor is it created to provide full understanding
of (or parts of) the GSM 900 system. The present document lists the additional test procedures, and provides the
methods of test for testing a professional MS for conformance to the GSM standard.
For a full description of the system, reference are made to all the GSM technical specifications or GSM related ETSs or
ENs. Clause 2 provides a complete list of the GSM technical specifications, GSM related ETSs, ENs, and ETRs, on
which this conformance test specifications is based.
The present document applies to the unit which includes the hardware to establish a connection across the radio
interface.
2 References
2.1 Normative references
References are either specific (identified by date of publication and/or edition number or version number) or
non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the
reference document (including any amendments) applies.
Referenced documents which are not found to be publicly available in the expected location might be found at
http://docbox.etsi.org/Reference.
NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee
their long term validity.
The following referenced documents are necessary for the application of the present document.
[1] ETSI TS 100 607-1: "Digital cellular telecommunications system (Phase 2+); Mobile Station (MS)
conformance specification; Part 1: Conformance specification (3GPP 11.10-1 Release 1999)".
[2] ETSI TS 100 910: "Digital cellular telecommunications system (Phase 2+); Radio transmission
and reception (3GPP TS 05.05 Release 1999)".
[3] ETSI TS 102 933-1: "Railway Telecommunications (RT); GSM-R improved receiver parameters;
Part 1: Requirements for radio reception".
[4] ETSI TS 136 141: "LTE; Evolved Universal Terrestrial Radio Access (E-UTRA); Base
Station (BS) conformance testing (3GPP TS 36.141)".
2.2 Informative references
References are either specific (identified by date of publication and/or edition number or version number) or
non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the
reference document (including any amendments) applies.
NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee
their long term validity.
ETSI

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7 ETSI TS 102 933-2 V2.1.1 (2015-06)
The following referenced documents are not necessary for the application of the present document but they assist the
user with regard to a particular subject area.
[i.1] ETSI TR 101 748: "Digital cellular telecommunications system (Phase 2+) (GSM); Abbreviations
and acronyms (GSM 01.04)".
[i.2] ETSI EN 300 607-1 (V8.1.1): "Digital cellular telecommunications system (Phase 2+) (GSM);
Mobile Station (MS) conformance specification; Part 1: Conformance specification (GSM 11.10-1
version 8.1.1 Release 1999)".
3 Abbreviations
For the purposes of the present document, the abbreviations given in ETSI TR 101 748 [i.1] and the following apply:
EDOR ETCS Data Only Radio
ETCS European Train Control System
GPH General Purpose Handheld
OPH Operational Purpose Handheld
OPS Operational Purpose Handheld for Shunting
4 Receiver characteristics for 8 Watt mobiles
4.0 General
In this clause receiver measurements are described, for professional mobile stations equipped with a permanent antenna
connector only. Wherever in this clause, for FACCH tests, the SS is required to send a Layer 3 message not requiring a
Layer 3 response from the professional MS the message can be a TEST INTERFACE message or a STATUS message,
possibly with an unknown Protocol Discriminator.
Testing philosophy
Certain assumptions concerning the functional mechanisms of GSM receivers have been made in order to define tests
that will verify the receiver performance without excessive redundancy and excessive test times.
The receiver functions can be divided into:
• Analogue RF and IF stages that are affected by input levels, temperature and power supply levels.
• Demodulator that is affected by input levels and interfering signals.
• Decoders that are affected by the different logical channels and input levels.
The tests are designed to stress each of these blocks with a minimum of redundancy.
4.1 Reference sensitivity
The reference sensitivity is the signal level at the professional MS receiver input at which a certain BER and FER shall
be achieved.
The requirements and this test apply to professional MS supporting speech.
For tests using ARFCN ranges values in the table 1 shall be used.
ETSI

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8 ETSI TS 102 933-2 V2.1.1 (2015-06)
Table 1: ARFCN Ranges
Term
Band Low ARFCN range Mid ARFCN range High ARFCN range
E-GSM 900 975 to 980 60 to 65 120 to 124
R-GSM 900 955 to 960 (R-GSM) and 60 to 65 120 to 124
975 to 980 (E-GSM)
ER-GSM 900 940 to 945 (ER-GSM) 60 to 65 120 to 124
975 to 980 (E-GSM)

4.2 Blocking with CW interfering Signals
4.2.1 Blocking and spurious response - speech channels
4.2.1.1 Definition and applicability
Blocking is a measure of the ability of the receiver to receive a modulated wanted input signal in the presence of an
unwanted input signal, on frequencies other than those of the spurious responses or the adjacent channels, without
exceeding a given degradation.
The requirements and this test apply to professional MS supporting speech.
4.2.1.2 Conformance requirement
1) The blocking characteristics of the receiver are specified separately for in-band and out-of-band performance
and shall be as identified in ETSI TS 102 933-1 [3], clause 7.1.
The reference sensitivity performance as specified in table 1 of ETSI TS 100 910 [2] shall be met when the
following signals are simultaneously input to the receiver:
- a useful signal at frequency f , as specified in ETSI TS 102 933-1 [3], clause 7.1.1;
0
- a continuous, static sine wave signal at a level as in the table 10 of ETSI TS 102 933-1 [3], clause 7.1.1
and at a frequency (f) which is an integer multiple of 200 kHz;
with the following exceptions, called spurious response frequencies:
a) ER-GSM 900/R-GSM 900: in band, for a maximum of six occurrences (which if grouped shall not
exceed three contiguous occurrences per group);
b) out-of-band, for a maximum of 24 occurrences (which if below f and grouped shall not exceed
0
three contiguous occurrences per group).
Where the above performance shall be met when the continuous sine wave signal (f) is set to a level
of -40 dBm.
2) Testing conditions shall guarantee that the noise level of their used interfering signals are
below -113 dBm/200 kHz on the wanted ARFCN and its (bi) adjacent channels.
4.2.1.3 Test purpose
1) To verify that the in band blocking performance is met without exceeding the total number of allowed in band
spurious responses. An allowance is made for the statistical significance of the test.
2) To verify that at selected out-of-band frequencies, the out-of-band blocking performance is met without
exceeding the total number of allowed out-of-band spurious responses. An allowance is made for the statistical
significance of the test.
NOTE: Not all of the possible out-of-band frequencies are tested as this results in excessive test time. However,
the total number of out-of-band spurious responses, specified in ETSI TS 102 933-1 [3], clause 7.1.1, are
allowed to ensure a fair test of the professional MS.
ETSI

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9 ETSI TS 102 933-2 V2.1.1 (2015-06)
4.2.1.4 Method of test
4.2.1.4.1 Initial conditions
A call is set up according to the generic call set up procedure, except the BCCH frequency list shall be empty, on a TCH
with an arbitrary ARFCN in the range supported by the professional MS. The power control level is set to maximum
power.
The SS transmits Standard Test Signal C1 on the traffic channel (TCH frequency FR).
The SS commands the professional MS to create traffic channel loop back signalling erased frames.
4.2.1.4.2 Procedure
a) The SS produces a static wanted signal and a static interfering signal at the same time. The amplitude of the
wanted signal is set to -100 dBm.
b) The unwanted signal is a C.W. signal (Standard test signal IO) of frequency FB. It is applied in turn on the
subset of frequencies calculated in step c) in the overall range 100 kHz to 12,75 GHz, where FB is an integer
multiple of 200 kHz.
However, frequencies in the range FR ± 600 kHz are excluded.
As specified by ETSI EN 300 607-1 [i.2], clause 14.7: "Allowance must be made for possible spurious signals
arising from the SS. These are particularly likely at sub harmonic frequencies nFB where n = 2, 3, 4, 5, etc.".
c) The frequencies at which the test is performed (adjusted to an integer multiple of 200 kHz channels most
closely approximating the absolute frequency of the calculated blocking signal frequency) are the combined
frequencies from i), ii) and iii) below:
i) The total frequency range formed by:
R-GSM 900 the frequencies between F + (IF + IF + . +IF +19,5 MHz);
lo 1 2 n
and F - (IF + IF + . + IF + 19,5 MHz).
lo 1 2 n
ER-GSM 900 the frequencies between F + (IF + IF + . +IF +21 MHz);
lo 1 2 n
and F - (IF + IF + . + IF + 21 MHz);
lo 1 2 n
and the frequencies +100 MHz and -100 MHz from the edge of the relevant receive band.
Measurements are made at 200 kHz intervals.
ii) The three frequencies IF , IF + 200 kHz, IF - 200 kHz.
1 1 1
iii) The frequencies:
mF + IF ,
lo 1
mF - IF ,
lo 1
mFR,
where m is all positive integers greater than or equal to 2 such that either sum lies in the range
100 kHz to 12,75 GHz.
The frequencies in step ii) and iii) lying in the range of frequencies defined by step i) above need not be
repeated.
ETSI

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10 ETSI TS 102 933-2 V2.1.1 (2015-06)
Where:
F - local oscillator applied to first receiver mixer;
lo
IF . IF - are the n intermediate frequencies;
1 n
F , IF , IF . IF shall be declared by the manufacturer in the PIXIT statement as given in
lo 1 2 n
ETSI TS 100 607-1 [1], clause 4.
d) The level of the unwanted signal is set according to table 2.
Table 2: Level of unwanted signals for professional MS
FR Frequency (ARFCN of Professional MS
FB Frequency
useful signal) R-GSM 900/ER-GSM 900
(Blocking signal)
Level in dBm
FR ± 600 kHz to FR ± 800 kHz -38
FR ± 800 kHz to FR ± 1,6 MHz -33
FR ± 1,6 MHz to FR ± 5 MHz -23
100 kHz to < 835 MHz -23
835 MHz to < 873 MHz +0
873 MHz to < 880 MHz +0
970
880 MHz to < 912 MHz -5

912 MHz to < 915 MHz -12
915 MHz to FR - 5 MHz -23
FR + 5 MHz to 925,6 MHz -23
> 925,6 MHz to 927 MHz -13
> 927 MHz to 960 MHz -10
> 960 MHz to 1 000 MHz +0
> 1 000 MHz to 12,75 GHz -23

NOTE: These values differ from ETSI TS 102 933-1 [3] because of practical generator limits in the SS.
e) The SS compares the data of the signal that it sends to the professional MS with the signal which is looped
back from the receiver after demodulation and decoding, and checks the frame erasure ind
...