ETSI TS 145 056 V13.0.0 (2016-01)

Digital cellular telecommunications system (Phase 2+); GSM Cordless Telephony System (CTS), Phase 1; CTS-FP Radio subsystem (3GPP TS 45.056 version 13.0.0 Release 13)

RTS/TSGG-0145056vd00

General Information

• Status: Published
• Publication Date: 21-Jan-2016
• Technical Committee: 3GPP GERAN 1 - Radio aspects
• Current Stage: 12 - Completion
• Due Date: 19-Jan-2016
• Completion Date: 22-Jan-2016

Standards Content (Sample)

ETSI TS 1145 056 V13.0.0 (201616-01)






TECHNICAL SPECIFICATIONION
Digital cellular telecocommunications system (Phahase 2+);
GSM Cordless TeTelephony System (CTS), Phahasse 1;
CTS-FFP Radio subsystem
(3GPP TS 45.0.056 version 13.0.0 Release 13 13)

R
GLOBAL SYSTTEME FOR
MOBILE COMMUUNNICATIONS

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3GPP TS 45.056 version 13.0.0 Release 13 1 ETSI TS 145 056 V13.0.0 (2016-01)



Reference
RTS/TSGG-0145056vd00
Keywords
GSM
ETSI
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ETSI

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3GPP TS 45.056 version 13.0.0 Release 13 2 ETSI TS 145 056 V13.0.0 (2016-01)
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 (https://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 3rd Generation Partnership Project (3GPP).
The present document may refer to technical specifications or reports using their 3GPP identities, UMTS identities or
GSM identities. These should be interpreted as being references to the corresponding ETSI deliverables.
The cross reference between GSM, UMTS, 3GPP and ETSI identities can be found under
http://webapp.etsi.org/key/queryform.asp.
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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3GPP TS 45.056 version 13.0.0 Release 13 3 ETSI TS 145 056 V13.0.0 (2016-01)
Contents
Intellectual Property Rights . 2
Foreword . 2
Modal verbs terminology . 2
Foreword . 5
1 Scope . 6
2 References . 6
3 Definitions and abbreviations . 7
3.1 Definitions . 7
3.2 Abbreviations . 7
4 Radio transmission and reception . 7
4.1 Frequency band and channels arrangements . 7
4.2 Reference configuration . 8
4.3 Transmitter characteristics. 8
4.3.1 Output power . 8
4.3.2 Output RF spectrum . 9
4.3.2.1 Spectrum due to the modulation and wide band noise . 9
4.3.2.2 Spectrum due to switching transient . 10
4.3.3 Spurious emission . 11
4.3.3.1 Principle of the specification . 11
4.3.3.2 Requirements . 11
4.3.4 Radio frequency tolerance . 12
4.3.5 Output level dynamic operation . 12
4.3.6 Phase accuracy . 12
4.3.7 Intermodulation attenuation . 12
4.4 Receiver characteristics . 12
4.4.1 Blocking characteristics . 13
4.4.2 AM suppression characteristics . 14
4.4.3 Intermodulation characteristics . 14
4.5 Transmitter / receiver performance . 15
4.5.1 Nominal error rate . 15
4.5.2 Reference sensitivity level . 15
4.5.3 Reference interference level . 16
4.5.4 Erroneous frame indication performance . 16
4.5.5 Access performance at high input levels. 17
4.5.6 Frequency hopping performance under interference conditions . 17
5 Radio subsystem frequency control . 21
5.1 Void . 21
5.2 General . 21
5.3 Adaptive Frequency Allocation (AFA) . 21
5.4 TFH carrier list selection . 21
5.4.1 Acceptance procedure . 21
5.4.1.1 Basic threshold . 21
5.4.1.2 Sliding window technique . 22
5.4.1.3 Fixed window technique . 22
5.4.1.4 List extension check . 22
5.4.2 Parameters. 22
5.4.3 AFA and TFH selection performance requirements . 22
5.5 CTS Beacon channel carrier selection . 23
5.6 Timeslot assignment for dedicated connection . 23
5.7 Frequency control parameters . 23
Annex A (informative): Spectrum characteristics (spectrum due to the modulation) . 25
ETSI

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3GPP TS 45.056 version 13.0.0 Release 13 4 ETSI TS 145 056 V13.0.0 (2016-01)
Annex B (normative): Transmitted power level versus time . 27
Annex C (normative): Environmental conditions . 28
C.1 General . 28
C.2 Temperature . 28
C.3 Voltage . 28
Annex D (informative): Change history . 29
History . 30

ETSI

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3GPP TS 45.056 version 13.0.0 Release 13 5 ETSI TS 145 056 V13.0.0 (2016-01)
Foreword
rd
This Technical Specification has been produced by the 3 Generation Partnership Project (3GPP).
The contents of the present document are subject to continuing work within the TSG and may change following formal
TSG approval. Should the TSG modify the contents of the present document, it will be re-released by the TSG with an
identifying change of release date and an increase in version number as follows:
Version x.y.z
where:
x the first digit:
1 presented to TSG for information;
2 presented to TSG for approval;
3 or greater indicates TSG approved document under change control.
y the second digit is incremented for all changes of substance, i.e. technical enhancements, corrections,
updates, etc.
z the third digit is incremented when editorial only changes have been incorporated in the document.
ETSI

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3GPP TS 45.056 version 13.0.0 Release 13 6 ETSI TS 145 056 V13.0.0 (2016-01)
1 Scope
The present document specifies the requirements for the CTS-Fixed Part (CTS-FP) transceiver of the digital mobile
cellular and personal communication systems operating in the 900 MHz (P-GSM and E-GSM) and 1 800 MHz band
(GSM 900 and DCS 1 800), and specifies the Radio subsystem frequency control implemented in the CTS-Fixed Part.
Unless otherwise stated, the requirements defined in the present document apply to the full range of environmental
conditions specified for the CTS-FP equipment (see annex C).
2 References
The following documents contain provisions which, through reference in this text, constitute provisions of the present
document.
• References are either specific (identified by date of publication, edition number, version number, etc.) or
non-specific.
• For a specific reference, subsequent revisions do not apply.
• For a non-specific reference, the latest version applies. In the case of a reference to a 3GPP document
(including a GSM document), a non-specific reference implicitly refers to the latest version of that document in
the same Release as the present document.
[1] GSM 01.04: "Digital cellular telecommunications system (Phase 2+); Abbreviations and
acronyms".
[2] GSM 03.22: "Digital cellular telecommunications system (Phase 2+); Functions related to Mobile
Station (MS) in idle mode and group receive mode".
[3] GSM 03.52 : "Digital cellular telecommunications system (Phase 2+); GSM Cordless Telephony
System (CTS); Lower layers of the CTS radio interface; Stage 2".
[4] GSM 04.56 : "Digital cellular telecommunications system (Phase 2+); GSM Cordless Telephony
System (CTS); CTS radio interface layer 3 specification".
[5] GSM 05.01: "Digital cellular telecommunications system (Phase 2+); Physical layer on the radio
path General description".
[6] GSM 05.02: "Digital cellular telecommunications system (Phase 2+); Multiplexing and multiple
access on the radio path".
[7] GSM 05.04: "Digital cellular telecommunications system (Phase 2+); Modulation".
[8] GSM 05.05: "Digital cellular telecommunications system (Phase 2+); Radio transmission and
reception".
[9] GSM 05.08: "Digital cellular telecommunications system (Phase 2+); Radio subsystem link
control".
[10] GSM 05.10: "Digital cellular telecommunications system (Phase 2+); Radio subsystem
synchronization".
[11] GSM 11.56: "Digital cellular telecommunications system (Phase 2+); CTS-Fixed Part
conformance specification".
[12] GSM 03.56: "Digital cellular telecommunications system (Phase 2+); GSM Cordless Telephony
System (CTS); CTS Architecture Description; Stage 2".
ETSI

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3GPP TS 45.056 version 13.0.0 Release 13 7 ETSI TS 145 056 V13.0.0 (2016-01)
3 Definitions and abbreviations
3.1 Definitions
For the purposes of the present document, the following terms and definitions apply:
CTS Mobile Station: GSM-MS supporting CTS.
CTS Fixed Part: CTS-FP is a device which acts as a link between the CTS-MS and the fixed network.
GSM-CTS: Cordless Telephony System based on GSM.
3.2 Abbreviations
Abbreviations used in the present document are listed in GSM 01.04. In addition, the following abbreviations are used:
AFA Adaptive Frequency Allocation
CTS Cordless Telephony System
CTS-FP CTS-Fixed Part
CTS-MS CTS-Mobile Station
GFL Generic Frequency List
TFH Total Frequency Hopping
4 Radio transmission and reception
4.1 Frequency band and channels arrangements
i) Standard or primary GSM 900 Band, P-GSM:
- for Standard GSM 900 band, the CTS-FP is required to operate in the following frequency band:
- 890 MHz to 915 MHz: CTS-FP receive;
- 935 MHz to 960 MHz: CTS-FP transmit.
ii) Extended GSM 900 Band, E-GSM (includes Standard GSM 900 band):
- for Extended GSM 900 band, the CTS-FP is required to operate in the following frequency band:
- 880 MHz to 915 MHz: CTS-FP receive;
- 925 MHz to 960 MHz: CTS-FP transmit.
iii) DCS 1 800 Band:
- for DCS 1 800 band, the CTS-FP is required to operate in the following band:
- 1 710 MHz to 1 785 MHz: CTS-FP receive;
- 1 805 MHz to 1 880 MHz: CTS-FP transmit.
The carrier spacing is 200 kHz.
The carrier frequency is designated by the absolute radio frequency channel number (ARFCN) as specified in
GSM 05.05 clause 2.
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3GPP TS 45.056 version 13.0.0 Release 13 8 ETSI TS 145 056 V13.0.0 (2016-01)
4.2 Reference configuration
The reference configuration for the CTS-FP radio subsystem is described in GSM 05.01.
4.3 Transmitter characteristics
Throughout this clause, unless otherwise stated, requirements are given in terms of power levels at the antenna
connector of the equipment. If an active device is added to the CTS-FP antenna connector, the requirements of this
clause shall also be met at the output of this active device. For equipment with integral antenna only, a reference
antenna with 0 dBi gain shall be assumed.
The term output power refers to the measure of the power when averaged over the useful part of the burst (see annex B).
The term peak hold refers to a measurement where the maximum is taken over a sufficient time that the level would not
significantly increase if the holding time were longer.
4.3.1 Output power
The CTS-FP maximum output power and lowest nominal output power shall be, as defined in the following table.

GSM 900 DCS 1 800 Tolerance (dB)
  for conditions
  normal extreme
Maximum Nominal
11 dBm 12 dBm +0/-2 +0,5/-2,5
output power
Lowest Nominal output -9 dBm -8 dBm ±4 ±5
power

The different power control levels needed to support downlink adaptive RF power control (seeGSM 05.08) shall have
the nominal output power as defined in the table below, starting from the power control level for the lowest nominal
output power up to the power control level for the maximum nominal output power as defined in the table above.

GSM 900
Power Nominal Output Tolerance (dB) for
control level power (dBm) conditions
 normal extreme

1 11 +0/-2 +0,5/-2,5
2 9 ±2 ±3
3 7 ±3 ±4
4 5 ±3 ±4
5 3 ±3 ±4
6 1 ±3 ±4
7 -1 ±3 ±4
8 -3 ±4 ±5
9 -5 ±4 ±5
10 -7 ±4 ±5
11-14 -9 ±4 ±5

ETSI

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3GPP TS 45.056 version 13.0.0 Release 13 9 ETSI TS 145 056 V13.0.0 (2016-01)

DCS 1 800
Power Nominal Tolerance (dB) for
control Output power conditions
level (dBm)
 normal extreme

1-4 12 +0/-2 +0,5/-2,5
5 10 ±2 ±3
6 8 ±3 ±4
7 6 ±3 ±4
8 4 ±3 ±4
9 2 ±3 ±4
10 0 ±3 ±4
11 -2 ±4 ±5
12 -4 ±4 ±5
13 -6 ±4 ±5
14 -8 ±4 ±5

NOTE: The above definition of the power control levels for GSM 900 and DCS 1800 allows to have an
equivalent indoor coverage when the same power control level is applied in GSM 900 and DCS 1800.
Furthermore, the difference in output power actually transmitted by the CTS-FP between two power control levels
where the difference in nominal output power indicates an increase of 2 dB (taking into account the restrictions due to
nominal maximum and lowest output powers), shall be +2 ± 1,5 dB. Similarly, if the difference in output power actually
transmitted by the CTS-FP between two power control levels where the difference in nominal output power indicates an
decrease of 2 dB (taking into account the restrictions due to nominal maximum and lowest output powers), shall be
-2 ± 1,5 dB.
4.3.2 Output RF spectrum
The specifications contained in this clause apply to CTS-FP, in frequency hopping as well as in non frequency hopping
mode.
Due to the bursty nature of the signal, the output RF spectrum results from two effects:
- the modulation process;
- the power ramping up and down (switching transients).
The two effects are specified separately; the measurement method used to analyse separately those two effects is
specified in GSM 11.56. It is based on the "ringing effect" during the transients, and is a measurement in the time
domain, at each point in frequency.
The limits specified thereunder are based on a 5-pole synchronously tuned measurement filter.
4.3.2.1 Spectrum due to the modulation and wide band noise
The output RF modulation spectrum is specified in the following tables. A mask representation of the present document
is shown in annex A. The present document applies for all RF channels supported by the equipment.
The specification applies to the entire of the relevant transmit band and up to 2 MHz either side.
The specification shall be met under the following measurement conditions:
- zero frequency scan, filter bandwidth and video bandwidth of 30 kHz up to 1800 kHz from the carrier and
100 kHz at 1800 kHz and above from the carrier, with averaging done over 50 % to 90 % of the useful part of
the transmitted bursts, excluding the midamble, and then averaged over at least 200 such burst measurements.
Above 1800 kHz from the carrier only measurements centred on 200 kHz multiples are taken with averaging
over 50 bursts;
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3GPP TS 45.056 version 13.0.0 Release 13 10 ETSI TS 145 056 V13.0.0 (2016-01)
- when tests are done in frequency hopping mode, the averaging shall include only bursts transmitted when the
hopping carrier corresponds to the nominal carrier of the measurement. The specifications then apply to the
measurement results for any of the hopping frequencies.
The power level is the "actual absolute output power" defined in clause 4.3.1.
The figures in tables a) and b) below, at the horizontally listed frequency offset from the carrier (kHz), are then the
maximum allowed level (dB) relative to a measurement in 30 kHz on the carrier.
a) GSM 900 CTS-FP:

100 200 250 400 ≥ 600 ≥ 1 800 ≥ 6 000
   <1 800 <6 000
dBc +0,5 -30 -33 -60 -60 -68 -71

b) DCS 1800 CTS-FP:

100 200 250 400 ≥ 600 ≥ 1 800 ≥ 6 000
   < 1 800 < 6 000
dBc +0,5 -30 -33 -60 -60 -63 -67

The following exceptions shall apply, using the same measurement conditions as specified above:
i) in the combined range 600 kHz to 6 MHz above and below the carrier, in up to three bands of 200 kHz width
centred on a frequency which is an integer multiple of 200 kHz, exceptions at up to -36 dBm are allowed;
ii) above 6 MHz offset from the carrier in up to 12 bands of 200 kHz width centred on a frequency which is an
integer multiple of 200 kHz, exceptions at up to -36 dBm are allowed. For the BTS only one transmitter is active
for this test.
Using the same measurement conditions as specified above, if a requirement in tables a) and b) is tighter than the limit
given in the following, the latter shall be applied instead.

Frequency offset from the carrier GSM 900 DCS 1 800
< 1 800 kHz -69 dBm -64 dBm
≥ 1 800 kHz -64 dBm -59 dBm

4.3.2.2 Spectrum due to switching transient
Those effects are also measured in the time domain and the specifications assume the following measurement
conditions: zero frequency scan, filter bandwidth 30 kHz, peak hold, and video bandwidth 100 kHz.
The example of a waveform due to a burst as seen in a 30 kHz filter offset from the carrier is given in the figure 1 of
GSM 05.05.
The maximum level measured, after any filters and combiners, at the indicated offset from the carrier, shall be:
ETSI

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3GPP TS 45.056 version 13.0.0 Release 13 11 ETSI TS 145 056 V13.0.0 (2016-01)

Maximum level measured
400 kHz 600 kHz 1 200 kHz 1 800 kHz
GSM 900 / DCS 1 800 -36 dBm -36 dBm -36 dBm -36 dBm

4.3.3 Spurious emission
The limits specified thereunder are based on a 5-pole synchronously tuned measurement filter.
4.3.3.1 Principle of the specification
In this clause, the spurious transmissions (whether modulated or unmodulated) and the switching transients are
specified together by measuring the peak power in a given bandwidth at various frequencies. The bandwidth is
increased as the frequency offset between the measurement frequency and, either the carrier, or the edge of the CTS-FP
transmit band, increases. The effect for spurious signals of widening the measurement bandwidth is to reduce the
allowed total spurious energy per MHz. The effect for switching transients is to effectively reduce the allowed level of
the switching transients (the peak level of a switching transient increases by 6 dB for each doubling of the measurement
bandwidth). The conditions are specified in the following table, a peak-hold measurement being assumed.
The measurement conditions for radiated and conducted spurious are specified separately in GSM 11.56. The frequency
bands where these are actually measured may differ from one type to the other (see GSM 11.56).
a)

Band Frequency offset Measurement bandwidth
(offset from carrier)
relevant transmit 30 kHz
≥ 1,8 MHz
band 100 kHz
≥ 6 MHz

b)

Band Frequency offset Measurement bandwidth
100 kHz to 50 MHz - 10 kHz
50 MHz to 500 MHz - 100 kHz
above 500 MHz outside the (offset from edge of the
relevant transmit band relevant above band)
30 kHz
≥ 2 MHz
100 kHz
≥ 5 MHz
300 kHz
≥ 10 MHz
1 MHz
≥ 20 MHz
3 MHz
≥ 30 MHz

The measurement settings assumed correspond, for the resolution bandwidth to the value of the measurement
bandwidth in the table, and for the video bandwidth to approximately three times this value.
4.3.3.2 Requirements
The power measured in the conditions specified in clause 4.3.3.1a, for a CTS-FP when allocated a channel, shall be no
more than -36 dBm.
The power measured in the conditions specified in clause 4.3.3.1b for a CTS-FP, when allocated a channel, shall be no
more than:
ETSI

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3GPP TS 45.056 version 13.0.0 Release 13 12 ETSI TS 145 056 V13.0.0 (2016-01)
- 250 nW (-36 dBm) in the frequency band 9 kHz to 1 GHz;
- 1 µW (-30 dBm) in the frequency band 1 GHz to 12,75 GHz.
When allocated a channel, the power emitted by the CTS-FP, when measured using the measurement conditions
specified in 4.3.2.1, but with averaging over at least 50 burst measurements, with a filter and video bandwidth of
100 kHz, for measurements centred on 200 kHz multiples, in the band 880 MHz to 915 MHz shall be no more than
-75 dBm, and in the band 1 710 MHz to 1 785 MHz, shall be no more than -69 dBm.
As exceptions up to five measurements with a level up to -36 dBm are permitted in each of the bands 880 MHz to
915 MHz and 1 710 MHz to 1 785 MHz for each ARFCN used in the measurements.
When hopping, this applies to each set of measurements, grouped by the hopping frequencies as described in
clause 4.3.2.1.
4.3.4 Radio frequency tolerance
The radio frequency tolerance for the CTS-FP is defined in GSM 05.10.
4.3.5 Output level dynamic operation
NOTE: The term "any transmit band channel" is used here to mean:
any RF channel of 200 kHz bandwidth centred on a multiple of 200 kHz which is within the relevant
transmit band.
The output power can be reduced by steps of 2 dB as defined in clause 4.3.1.
The transmitted power level relative to time when sending a bur
...