ETSI TS 143 052 V13.0.0 (2016-01)

Digital cellular telecommunications system (Phase 2+); GSM Cordless Telephony System (CTS), Phase 1; Lower Layers of the CTS Radio Interface, Stage 2 (3GPP TS 43.052 version 13.0.0 Release 13)

RTS/TSGG-0143052vd00

General Information

• Status: Published
• Publication Date: 20-Jan-2016
• Technical Committee: 3GPP GERAN 1 - Radio aspects
• Current Stage: 12 - Completion
• Due Date: 19-Jan-2016
• Completion Date: 21-Jan-2016

Standards Content (Sample)

ETSI TS 1143 052 V13.0.0 (201616-01)






TECHNICAL SPECIFICATIONION
Digital cellular telecocommunications system (Phahase 2+);
GSM Cordless TeTelephony System (CTS), Phahasse 1;
Lower Layers of tf the CTS Radio Interface, Statage 2
(3GPP TS 43.0.052 version 13.0.0 Release 13 13)

R
GLOBAL SYSTTEME FOR
MOBILE COMMUUNNICATIONS

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3GPP TS 43.052 version 13.0.0 Release 13 1 ETSI TS 143 052 V13.0.0 (2016-01)



Reference
RTS/TSGG-0143052vd00
Keywords
GSM
ETSI
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3GPP TS 43.052 version 13.0.0 Release 13 2 ETSI TS 143 052 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 43.052 version 13.0.0 Release 13 3 ETSI TS 143 052 V13.0.0 (2016-01)
Contents
Intellectual Property Rights . 2
Foreword . 2
Modal verbs terminology . 2
Foreword . 6
1 Scope . 7
2 References . 7
3 Definitions and abbreviations . 8
3.1 Definitions . 8
3.2 Abbreviations . 8
4 Main concepts of the CTS radio interface . 8
4.1 Beacon concept . 8
4.2 Adaptive Frequency Allocation (AFA) concept . 8
4.3 Total Frequency Hopping (TFH) concept . 9
5 Radio Transmission and Reception . 9
5.1 Frequency Band and Channel Arrangement . 9
5.2 Receiver Characteristics . 9
5.2.1 CTS-MS characteristics . 9
5.2.2 CTS-FP characteristics . 9
5.3 Transmitter Characteristic s . 10
5.3.1 CTS-MS characteristics . 10
5.3.2 CTS-FP characteristics . 10
5.4 CTS transmitter / receiver performance . 10
6 Modulation and Raw Data Rates . 10
7 Channel Coding and Interleaving . 10
8 Time Slots and TDMA-Frames . 10
9 Bursts . 11
10 Logical Channels . 11
10.1 CTS Beacon Channel (CTSBCH) . 11
10.1.1 CTSBCH format . 11
10.1.2 CTSBCH timing . 12
10.1.3 CTSBCH radio frequency channel . 12
10.1.4 CTSBCH-SB information . 12
10.2 CTS Access Request Channel (CTSARCH) . 12
10.2.1 CTSARCH format . 12
10.2.2 CTSARCH timing . 12
10.2.3 CTSARCH radio frequency channel. 13
10.2.4 CTSARCH information . 13
10.3 CTS Access Grant Channel (CTSAGCH) . 13
10.3.1 CTSAGCH format . 13
10.3.2 CTSAGCH timing . 13
10.3.3 CTSAGCH radio frequency channel . 13
10.3.4 CTSAGCH information . 14
10.4 CTS Paging Channel (CTSPCH) . 14
10.4.1 CTSPCH format . 14
10.4.2 CTSPCH timing . 14
10.4.3 CTSPCH radio frequency channel . 14
10.4.4 CTSPCH information . 14
10.5 SACCH . 14
10.6 FACCH . 15
ETSI

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3GPP TS 43.052 version 13.0.0 Release 13 4 ETSI TS 143 052 V13.0.0 (2016-01)
10.7 TCH . 15
10.8 Mapping of the Logical Channels onto Physical Channels . 15
10.8.1 Mapping in time of the logical channels onto the physical channels . 15
10.8.2 Mapping in frequency of the logical channels onto the physical channels . 16
10.8.3 Permitted Channel Combinations . 16
11 Lower Layer Procedures . 17
11.1 CTSBCH transmission . 17
11.2 CTSBCH timeslot management . 17
11.3 CTSBCH-FB detection . 17
11.4 CTSBCH-SB decoding . 17
11.5 Discontinuous transmission (DTX) . 17
11.6 Interference measurements . 17
11.7 MS timing offset measurements . 18
12 Radio Resource Management Procedures . 18
12.1 Radio Resources management states . 18
12.2 General procedures . 18
12.2.1 Initial synchronization of a CTS-MS and CTS-FP . 18
12.2.2 Frequency management . 18
12.2.2.1 Interference measurements exchange . 19
12.2.2.2 Adaptive Frequency Allocation (AFA) algorithm . 19
12.2.2.3 AFA / TFH interworking . 19
12.2.2.4 CTSBCH frequency selection . 19
12.2.3 CTSBCH-SB information . 20
12.2.4 Control of CTS-FP service range . 20
12.2.5 CTS-FP selection . 20
12.3 RR Idle state procedures . 20
12.3.1 CTSBCH monitoring . 20
12.3.2 Alive check . 20
12.3.3 Establishment of a dedicated RR connection . 20
12.3.3.1 Timeslot assignment for dedicated connection . 20
12.3.3.2 CTS-MS initiated RR connection establishment . 21
12.3.3.2.1 Non-hopping access procedure . 21
12.3.3.2.2 Hopping access procedure . 21
12.3.3.3 CTS-FP initiated RR connection establishment . 21
12.3.4 CTSBCH failure detection . 22
12.4 RR Active state procedures . 22
12.4.1 Radio link failure detection . 22
12.4.2 RF power control . 22
12.4.3 Intracell handover . 22
12.4.4 Channel release . 22
Annex A (informative): GSM backwards compatibility issues . 23
A.1 Reasons for possible impact of a CTS-FP on a GSM-MS in the PLMN . 23
A.1.1 Power measurement of BCCH carrier . 23
A.1.1.1 Power on CTS-FP beacon frequency seen by the GSM-MS in cell selection . 23
A.1.1.2 Power on CTS-FP hopping frequencies seen by the GSM-MS in cell selection . 24
A.1.2 Synchronisation of a GSM-MS . 24
A.2 Scenario 1: PLMN and CTS-GFL have no common frequency in whole coverage area . 24
A.2.1 Cell Selection . 24
A.2.1.1 GSM-MS has no BA list stored on the SIM . 24
A.2.1.2 GSM-MS has a stored BA list on the SIM (optional) . 24
A.2.2 Cell reselection . 25
A.2.3 Handover . 25
A.3 Scenario 2: PLMN and CTS-GFL have locally no common frequency . 25
A.3.1 Cell Selection . 25
A.3.1.1 GSM-MS has no BA list stored on the SIM . 25
A.3.1.2 GSM-MS has a stored BA list on the SIM (optional) . 25
A.3.2 Cell reselection . 25
A.3.2.1 GSM-MS camping on its home PLMN . 25
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3GPP TS 43.052 version 13.0.0 Release 13 5 ETSI TS 143 052 V13.0.0 (2016-01)
A.3.2.2 GSM-MS camping on a visited PLMN in home country. 26
A.3.3 Handover . 26
A.4 Scenario 3: PLMN and CTS-GFL have locally some common frequencies . 26
A.4.1 Cell selection . 26
A.4.2 Cell reselection . 26
A.4.3 Handover . 27
A.5 Conclusion . 27
Annex B (informative): Change history . 28
History . 29

ETSI

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3GPP TS 43.052 version 13.0.0 Release 13 6 ETSI TS 143 052 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 43.052 version 13.0.0 Release 13 7 ETSI TS 143 052 V13.0.0 (2016-01)
1 Scope
The present document gives an overall description of the lower layers of the radio interface for GSM based Cordless
Telephony Systems (GSM-CTS).
The GSM-CTS system is intended to provide a cordless connection between the fixed network and GSM-based CTS
Mobile Stations (CTS-MS) via a private CTS Fixed Part (CTS-FP).
Stage 1 is an overall description, from the service subscribers and user's standpoint, that view the network as a single
entity which provides service to the user. GSM 02.56 contains the CTS Stage 1 service description.
GSM 03.56 is a Stage 2 document that describes the system architecture of the GSM Cordless Telephone Systems
(GSM-CTS), i.e. the system elements, the system interfaces and the functional capabilities.
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 02.56: "Digital cellular telecommunications system (Phase 2+); GSM Cordless Telephone
System (CTS); Service Description; Stage 1".
[3] GSM 03.22: "Digital cellular telecommunications system (Phase 2+); Functions related to Mobile
Station (MS) in idle mode and group receive mode".
[4] GSM 03.20: "Digital cellular telecommunications system (Phase 2+); GSM Cordless Telephone
System (CTS); Security related network functions; Stage 2".
[5] GSM 03.56: "Digital cellular telecommunications system (Phase 2+); GSM Cordless Telephony
System (CTS); CTS Architecture Description; Stage 2".
[6] GSM 04.08: "European digital cellular telecommunications system (Phase 2+); Mobile radio
interface layer 3 specification".
[7] GSM 05.02 (V6.3): "Digital cellular telecommunications system (Phase 2+); Multiplexing and
multiple access on the radio path".
[8] GSM 05.03 (V6.1): "Digital cellular telecommunications system (Phase 2+); Channel coding".
[9] GSM 05.04: "Digital cellular telecommunications system (Phase 2+); Modulation".
[10] GSM 05.05: "Digital cellular telecommunications system (Phase 2+); Radio transmission and
reception".
[11] GSM 05.08: "Digital cellular telecommunications system (Phase 2+); Radio subsystem link
control".
[12] GSM 05.10: "Digital cellular telecommunications system (Phase 2+); Radio subsystem
synchronization".
ETSI

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3GPP TS 43.052 version 13.0.0 Release 13 8 ETSI TS 143 052 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
The following list describes the abbreviations and acronyms used in the present document. The GSM abbreviations
explained in GSM 01.04 [1] are not included below.
AFA Adaptive Frequency Allocation
CTS Cordless Telephony System
CTSAGCH CTS Access Grant CHannel
CTSARCH CTS Access Request CHannel
CTSBCH CTS Beacon CHannel
CTS-FP CTS Fixed Part
CTS-MS CTS Mobile Station
CTSMSI CTS Mobile Subscriber Identity
CTSPCH CTS Paging CHannel
DPLMN Donor Public Land Mobile Network
FPBI Fixed Part Beacon Identity
GFL Generic Frequency List
RX Receive
TFH Total Frequency Hopping
TX Transmit
4 Main concepts of the CTS radio interface
The main assumption behind the CTS work item and in particular the CTS radio interface, is that a modified single
timeslot state of the art GSM-MS chipset could be used for a home base station, i.e. as a CTS-FP.
The CTS radio interface has been designed to meet a requirement of low generated interference, either from the CTS to
existing overlaying PLMNS, either from a CTS to another CTS. This requirement is achieved by the combined usage of
the three concepts: beacon concept, AFA concept and TFH concept.
4.1 Beacon concept
A limited number of CTS-MS shall be served by one CTS-FP (see GSM 02.56). Therefore, a broadcast channel
continuously transmitted such as the BCCH in GSM is not needed for CTS.
A channel called CTS beacon channel (CTSBCH) is proposed with the following main characteristics: it is transmitted
by the CTS-FP every 26 frames in a 52-multiframe pattern, and allows the CTS-MS to synchronise with the CTS-FP.
Minimum signalling is also supported by the CTSBCH, so that it is the only logical channel a CTS-FP shall periodically
transmit on the CTS radio interface. Every other logical channel is only transmitted "on demand".
4.2 Adaptive Frequency Allocation (AFA) concept
A precise radio frequency planning can not be applied to the CTS-FP/MS pair, as the CTS is intended to be deployed by
the end-user. Therefore, a list of frequencies (the GFL) on which it is allowed to operate is given to the CTS. With the
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3GPP TS 43.052 version 13.0.0 Release 13 9 ETSI TS 143 052 V13.0.0 (2016-01)
AFA, interference measurements will be performed on the frequencies in the GFL to provide a ranking in the AFA
table, in order to exclude unacceptably interfered frequencies from the usage in CTS.
4.3 Total Frequency Hopping (TFH) concept
The remaining frequencies are used by the Total Frequency Hopping algorithm in order to reduce the interference of the
CTS with the overlaying PLMN and other CTS-FP/MS pairs. With TFH the interference caused by the CTS link is
...