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TECHNICAL SPECIFICATION
Digital cellular telecommunications system (Phase 2+) (GSM);
GSM/EDGE Physical layer on the radio path;
General description
(3GPP TS 45.001 version 15.1.0 Release 15)
R
GLOBAL SYSTEM FOR
MOBILE COMMUNICATIONS
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3GPP TS 45.001 version 15.1.0 Release 15 1 ETSI TS 145 001 V15.1.0 (2018-10)
Reference
RTS/TSGR-0645001vf10
Keywords
GSM
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ETSI
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3GPP TS 45.001 version 15.1.0 Release 15 2 ETSI TS 145 001 V15.1.0 (2018-10)
Intellectual Property Rights
Essential patents
IPRs essential or potentially essential to normative deliverables 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
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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
.
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 45.001 version 15.1.0 Release 15 3 ETSI TS 145 001 V15.1.0 (2018-10)
Contents
Intellectual Property Rights . 2
Foreword . 2
Modal verbs terminology . 2
Foreword . 5
1 Scope . 6
1.1 References . 6
1.2 Abbreviations . 7
1.2a Definitions . 7
1.3 Restrictions . 7
2 Set of channels . 7
3 Reference configuration . 10
4 The block structures . 12
5 Multiple access and timeslot structure . 17
5.1 Hyperframes, superframes and multiframes . 17
5.2 Time slots and bursts . 18
5.2a Training sequences . 22
5.2a.1 General . 22
5.2a.2 VAMOS . 22
5.2a.3 Extended TSC Sets . 22
5.2a.4 EC-GSM-IoT . 22
5.3 Channel organization . 22
6 Frequency hopping capability . 31
7 Coding and interleaving . 32
7.1 General . 32
7.2 Packet Traffic and Control Channels. 38
7.2.1 Channel coding for PDTCH. 39
7.2.1.1 Channel coding for GPRS PDTCH . 39
7.2.1.2 Channel coding for EGPRS and EGPRS2 PDTCH . 39
7.2.2 Channel coding for PACCH, PBCCH, PAGCH, PPCH, CPBCCH, CPAGCH, CPPCH, and CSCH . 45
7.2.3 Channel Coding for the PRACH and MPRACH . 45
7.2.4 Channel coding for EC-PDTCH, EC-PACCH, EC-AGCH, EC-PCH, EC-PICH, EC-BCCH and EC-
SCH . 45
7.2.5 Channel Coding for EC-RACH . 45
8 Modulations . 45
9 Transmission and reception . 45
10 Other layer 1 functions . 48
11 Performance . 48
12 Flexible layer one . 48
12.1 Set of transport channels . 49
12.2 Transport block structure . 49
12.3 Channel organisation . 49
12.4 Transport channel coding/multiplexing for FLO . 49
13 Voice services over Adaptive Multi-user Channels on One Slot (VAMOS) . 50
13.1 General . 50
13.2 Network and MS Support for VAMOS . 51
13.3 Downlink Functionality . 51
13.3.1 Modulation . 52
13.3.1.1 Selection of modulation format . 52
13.3.2 Burst Format . 52
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3GPP TS 45.001 version 15.1.0 Release 15 4 ETSI TS 145 001 V15.1.0 (2018-10)
13.3.3 Associated Control Channels . 52
13.3.3.1 FACCH . 52
13.3.3.2 SACCH . 52
13.4 Uplink Functionality. 52
13.4.1 Modulation, Burst Format and Training Sequence . 52
13.4.2 Associated Control Channels . 53
13.4.2.1 FACCH . 53
13.4.2.2 SACCH . 53
13.5 Channel Mode Adaptation . 53
Annex A (informative): Reference configuration . 54
Annex B (informative): Relations between specification . 55
Annex C (informative): Change history . 56
History . 60
ETSI
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3GPP TS 45.001 version 15.1.0 Release 15 5 ETSI TS 145 001 V15.1.0 (2018-10)
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 45.001 version 15.1.0 Release 15 6 ETSI TS 145 001 V15.1.0 (2018-10)
1 Scope
The present document is an introduction to the 45 series of the digital cellular telecommunications systems GSM
technical specifications. It is not of a mandatory nature, but consists of a general description of the organization of the
physical layer with reference to the technical specifications where each part is specified in detail. It introduces
furthermore, the reference configuration that will be used throughout this series of technical specifications.
1.1 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] 3GPP TR 21.905: "Vocabulary for 3GPP Specifications".
[2] 3GPP TR 23.003: "Numbering, Addressing and Identification".
[3] 3GPP TS 23.034: "High Speed Circuit Switched Data (HSCSD); Stage 2".
[4] 3GPP TS 43.020: "Security-related Networks Functions".
[5] 3GPP TS 43.022: "Functions related to Mobile Station (MS) in idle mode and group receive
mode".
[6] 3GPP TR 43.030: "Radio network planning aspects"
[7] 3GPP TS 43.052: "Lower layers of the GSM Cordless Telephony System (CTS) radio interface;
Stage 2".
[8] 3GPP TS 43.064: "Overall description of the GPRS radio interface; Stage 2".
[9] 3GPP TS 44.003: "Mobile Station - Base Station System (MS - BSS) Interface Channel Structures
and Access Capabilities".
[10] 3GPP TS 44.018: "Mobile radio interface layer 3 specification; Radio Resource Control Protocol"
[11] 3GPP TS 44.021: "Rate Adaption on the Mobile Station - Base Station System (MS-BSS)
Interface"
[12] 3GPP TS 44.060: "General Packet Radio Service (GPRS); Mobile Station (MS) - Base Station
System (BSS) interface; Radio Link Control/ Medium Access Control (RLC/MAC) protocol".
[13] 3GPP TS 45.002: "Multiplexing and multiple access on the radio path".
[14] 3GPP TS 45.003: "Channel coding".
[15] 3GPP TS 45.004: "Modulation".
[16] 3GPP TS 45.005: "Radio transmission and reception".
[17] 3GPP TS 45.008: "Radio subsystem link control".
[18] 3GPP TS 45.009: "Link adaptation".
[19] 3GPP TS 45.010: "Radio subsystem synchronization".
[20] 3GPP TS 45.056: "GSM Cordless Telephony System (CTS); Phase 1; CTS-FP Radio subsystem".
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3GPP TS 45.001 version 15.1.0 Release 15 7 ETSI TS 145 001 V15.1.0 (2018-10)
[21] 3GPP TR 45.902: "Flexible Layer One".
[22] 3GPP TR 45.914: "Circuit Switched Voice Capacity Evolution for GERAN".
1.2 Abbreviations
Abbreviations used in the present document are listed in 3GPP TR 21.905. In addition to abbreviations in 3GPP TR
21.905 the following abbreviations apply:
BTTI Basic Transmission Time Interval
CC Coverage Class
EDAB Extended Dual slot Access Burst
ESAB Extended Synchronization Access Burst
FANR Fast Ack/Nack Reporting
PAN Piggy-backed Ack/Nack
PCS PAN Check Sequence
RTTI Reduced Transmission Time Interval
VAMOS Voice services over Adaptive Multi-user Channels on One Slot
AQPSK Adaptive Quadrature Phase Shift Keying
1.2a Definitions
Blind physical layer transmissions: see definition in 3GPP TS 43.064 [8].
Coverage Class: see definition in 3GPP TS 43.064 [8].
EC-GSM-IoT: see definition in 3GPP TS 43.064 [8].
Extended Coverage: see definition in 3GPP TS 43.064 [8].
1.3 Restrictions
Independently of what is stated elsewhere in this and other 3GPP specifications, mobile station support for PBCCH and
PCCCH is optional for A/Gb-mode of operation. The network shall never enable PBCCH and PCCCH.
2 Set of channels
The radio subsystem provides a certain number of logical channels that can be separated into two categories according
to 3GPP TS 44.003, 3GPP TS 43.064 and 3GPP TS 43.052:
1) The traffic channels (TCH): they are intended to carry two types of user information streams: encoded speech
and data. The following types of traffic channels are defined: Bm or full-rate (TCH/F), Lm or half-rate (TCH/H),
cell broadcast (CBCH), full rate packet data ((EC-)PDTCH/F) and half rate packet data (PDTCH/H) traffic
channels. For the purpose of this series of technical specifications, the following traffic channels are
distinguished:
- full rate speech TCH (TCH/FS);
- enhanced full rate speech TCH (TCH/EFS)
- half rate speech TCH (TCH/HS);
- adaptive full rate speech TCH (TCH/AFS);
- adaptive half rate speech TCH (TCH/AHS);
- adaptive half rate 8-PSK speech TCH (O-TCH/AHS);
- adaptive full rate wideband speech (TCH/WFS)
- adaptive full rate 8-PSK wideband speech (O-TCH/WFS)
- adaptive half rate 8-PSK wideband speech (O-TCH/WHS)
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3GPP TS 45.001 version 15.1.0 Release 15 8 ETSI TS 145 001 V15.1.0 (2018-10)
- 28,8 kbit/s full rate data E-TCH (E-TCH/F28.8);
- 32,0 kbit/s full rate data E-TCH (E-TCH/F32.0);
- 43,2 kbit/s full rate data E-TCH (E-TCH/F43.2);
- 14,4 kbit/s full rate data TCH (TCH/F14.4);
- 9,6 kbit/s full rate data TCH (TCH/F9.6);
- 4,8 kbit/s full rate data TCH (TCH/F4.8);
- 4,8 kbit/s half rate data TCH (TCH/H4.8);
- ≤ 2,4 kbit/s full rate data TCH (TCH/F2.4);
- ≤ 2,4 kbit/s half rate data TCH (TCH/H2.4);
- cell broadcast channel (CBCH);
- full rate packet data traffic channel (PDTCH/F);
- extended coverage full rate packet data traffic channel (EC-PDTCH/F);
- half rate packet data traffic channel (PDTCH/H).
Adaptive speech traffic channels are channels for which part of the radio bandwidth is reserved for transmission
of in band signalling to allow in call adaptation of the speech and channel codec. 8 full rate block structures for
TCH/AFS, 8 half rate block structures for O-TCH/AHS, 6 half rate block structures for TCH/AHS, 3 full rate
block structures for TCH/WFS, 5 full rate block structures for O-TCH/WFS and 3 half rate block structures for
O-TCH/WHS are defined.
All channels are bi-directional unless otherwise stated. Unidirectional downlink full rate channels, TCH/FD are
defined as the downlink part of the corresponding TCH/F. Unidirectional uplink full rate channels are FFS.
The assigned uplink and downlink (EC-)PDTCHs are used independently of each other. Dependent assignment
of uplink and downlink is possible. A PDTCH/F may be defined either in BTTI configuration or in RTTI
configuration. An EC-PDTCH/F shall be defined in BTTI configuration. When blind physical layer
transmissions are used on EC-PDTCH, variants of the BTTI configuration are used, see 3GPP TS 43.064 [8] and
3GPP TS 45.003 [14].
Multislot configurations for circuit switched connections are defined as multiple (1 up to 8) full rate channels
assigned to the same MS. At least one channel shall be bi-directional (TCH/F). The multislot configuration is
symmetric if all channels are bi-directional (TCH/F) and asymmetric if at least one channel is unidirectional
(TCH/FD).
High Speed Circuit Switched Data (HSCSD) is an example of multislot configuration, in which all channels shall
have the same channel mode.
NOTE: For the maximum number of timeslots to be used for a HSCSD configuration, see 3GPP TS 23.034.
Multislot configurations for packet switched connections are defined as multiple (1 up to 8) (EC-)PDTCH/Us and
one (EC-)PACCH for one mobile originated communication, or multiple (1 up to 8) (EC-)PDTCH/Ds and one (EC-
)PACCH for one mobile terminated communication respectively, assigned to the same MS. In this context
"assignment" refers to the list of PDCHs in BTTI configuration or PDCH-pairs in RTTI configuration that may
dynamically carry the (EC-)PDTCHs for that specific MS. One exception applies in case of EC operation where the
PDCHs of a mobile originated communication carry the EC-PDTCHs by means of a fixed uplink allocation.
The (EC-)PACCH shall have the same TTI configuration as the (EC-)PDTCH that it is associated with. The
rules for mapping of (EC-)PACCH onto physical channels are specified in 3GPP TS 44.060. In the case of point-
to-multipoint transmission for MBMS, multiple (1 up to 5) PDTCH/Ds and one PACCH can be assigned for
simultaneous communication with multiple mobiles.
Multislot configurations for dual transfer mode are defined as one bi-directional, traffic channel (TCH/H,
O-TCH/H, TCH/F, O-TCH/F or E-TCH/F) and one packet channel combination. The packet channel
combination may consist of multiple PDTCH/Us and one PACCH for one mobile originated communication, or
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3GPP TS 45.001 version 15.1.0 Release 15 9 ETSI TS 145 001 V15.1.0 (2018-10)
multiple PDTCH/Ds and one PACCH for one mobile terminated communication respectively, assigned to the
same MS. The PDTCHs may be transmitted either in BTTI configuration or in RTTI configuration. The rules for
mapping of PACCH onto physical channels are specified in 3GPP TS 44.060.
An MS capable of dual transfer mode (DTM) shall support, as a minimum, DTM multislot class 5, which utilises
the two-timeslot channelization method, i.e. a single TCH/F or O-TCH/F plus a single PDTCH/F. In addition,
the MS supporting DTM shall support TCH/H + PDCH/F configuration with the adaptive multirate (AMR)
speech coder for voice coding.
2) The signalling channels: these can be sub-divided into BCCH (broadcast control channel, including packet
broadcast control channel (PBCCH), see sub clause 1.3, and extended coverage broadcast control channel (EC-
BCCH)), CCCH (common control channel, including packet common control channel (PCCCH), see sub clause
1.3, and extended coverage common control channel (EC-CCCH)), SDCCH (stand-alone dedicated control
channel), (P)ACCH ((packet) associated control channel, including extended coverage packet associated control
channel (EC-PACCH)), packet timing advance control channel (PTCCH) and CTSCCH (CTS control channel).
An associated control channel is always assigned in conjunction with, either a TCH, or an SDCCH. A packet
associated control channel is always assigned in conjunction to one or multiple (EC-)PDTCH, concurrently
assigned to one MS. Two types of ACCH for circuit switched connections are defined: continuous stream (slow
ACCH) and burst stealing mode (fast ACCH). For the purpose of this series of technical specifications, the
following signalling channels are distinguished:
- stand-alone dedicated control channel, four of them mapped on the same basic physical channel as the CCCH
(SDCCH/4);
- stand-alone dedicated control channel, eight of them mapped on a separate basic physical channel
(SDCCH/8);
- full rate fast associated control channel (FACCH/F);
- enhanced circuit switched full rate fast associated control channel (E-FACCH/F);
- half rate fast associated control channel (FACCH/H);
- full rate octal fast associated control channel (O-FACCH/F);
- half rate octal fast associated control channel (O-FACCH/H);
- slow, TCH/F, O-TCH/F or E-TCH/F associated, control channel (SACCH/TF);
- slow, TCH/F or O-TCH/F associated, control channel for enhanced power control (SACCH/TPF);
- slow, TCH/H or O-TCH/H associated, control channel (SACCH/TH);
- slow, TCH/H or O-TCH/H associated, control channel for enhanced power control (SACCH/TPH);
- slow, TCH/F, O-TCH/F or E-TCH/F associated, control channel for multislot configurations (SACCH/M);
- slow, TCH/F or O-TCH/F associated, control channel for enhanced power control in multislot configurations
(SACCH/MP);
- slow, TCH/F associated, control channel for CTS (SACCH/CTS);
- slow, SDCCH/4 associated, control channel (SACCH/C4);
- slow, SDCCH/8 associated, control channel (SACCH/C8);
- packet associated control channel (PACCH);
- extended coverage packet associated control channel (EC-PACCH);
- packet timing advance control channel (PTCCH);
- broadcast control channel (BCCH);
- packet broadcast control channel (PBCCH);
- extended coverage broadcast control channel (EC-BCCH);
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3GPP TS 45.001 version 15.1.0 Release 15 10 ETSI TS 145 001 V15.1.0 (2018-10)
- random access channel (i.e. uplink CCCH) (RACH);
- packet random access channel (i.e. uplink PCCCH) (PRACH);
- extended coverage random access channel (i.e. uplink EC-CCCH) (EC-RACH);
- paging channel (part of downlink CCCH) (PCH);
- extended coverage paging channel (part of downlink EC-CCCH) (EC-PCH);
- packet paging channel (part of downlink PCCCH) (PPCH);
- access grant channel (part of downlink CCCH) (AGCH);
- packet access grant channel (part of downlink PCCCH) (PAGCH);
- extended coverage access grant channel (part of downlink EC-CCCH) (EC-AGCH);
- extended coverage paging indication channel (EC-PICH);
- notification channel (part of downlink CCCH) (NCH);
- CTS beacon channel (part of downlink CTSCCH) (CTSBCH-FB and CTSBCH-SB);
- CTS paging channel (part of downlink CTSCCH) (CTSPCH);
- CTS access request channel (part of uplink CTSCCH) (CTSARCH);
- CTS access grant channel (part of downlink CTSCCH) (CTSAGCH);
- enhanced inband associated control channel (E-IACCH);
- enhanced power control channel (EPCCH);
- enhanced power control channel for multislot configurations (EPCCH/M);
- packet random access channel for MBMS (MPRACH).
All associated control channels have the same direction (bi-directional or unidirectional) as the channels they are
associated to. The unidirectional SACCH/MD, SACCH/MPD or EPCCH/MD are defined as the downlink part
of SACCH/M, SACCH/MP or EPCCH/M respectively.
When there is no need to distinguish between different sub-categories of the same logical channel, only the generic
name wi
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