ETSI TS 145 001 V13.0.0 (2016-01)

Digital cellular telecommunications system (Phase 2+) (GSM); Physical layer on the radio path; General description (3GPP TS 45.001 version 13.0.0 Release 13)

RTS/TSGG-0145001vd00

General Information

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

Standards Content (Sample)

ETSI TS 1145 001 V13.0.0 (201616-01)

TECHNICAL SPECIFICATIONION
Digital cellular telecommmmunications system (Phase e 2+) (GSM);
Physical al layer on the radio path;
GeGeneral description
(3GPP TS 45.0.001 version 13.0.0 Release 13 13)

3GPP TS 45.001 version 13.0.0 Release 13 1 ETSI TS 145 001 V13.0.0 (2016-01)

Reference
RTS/TSGG-0145001vd00
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ETSI
3GPP TS 45.001 version 13.0.0 Release 13 2 ETSI TS 145 001 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
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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.
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3GPP TS 45.001 version 13.0.0 Release 13 3 ETSI TS 145 001 V13.0.0 (2016-01)
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 . 15
5.1 Hyperframes, superframes and multiframes . 16
5.2 Time slots and bursts . 16
5.2a Training sequences . 19
5.2a.1 General . 19
5.2a.2 VAMOS . 19
5.2a.3 Extended TSC Sets . 19
5.3 Channel organization . 19
6 Frequency hopping capability . 24
7 Coding and interleaving . 24
7.1 General . 24
7.2 Packet Traffic and Control Channels. 29
7.2.1 Channel coding for PDTCH. 29
7.2.1.1 Channel coding for GPRS PDTCH . 29
7.2.1.2 Channel coding for EGPRS and EGPRS2 PDTCH . 30
7.2.2 Channel coding for PACCH, PBCCH, PAGCH, PPCH, CPBCCH, CPAGCH, CPPCH, and CSCH . 36
7.2.3 Channel Coding for the PRACH and MPRACH . 36
7.2.4 Channel coding for EC-PDTCH, EC-PACCH, EC-AGCH, EC-PCH, EC-BCCH and EC-SCH . 36
8 Modulations . 36
9 Transmission and reception . 36
10 Other layer 1 functions . 39
11 Performance . 39
12 Flexible layer one . 39
12.1 Set of transport channels . 40
12.2 Transport block structure . 40
12.3 Channel organisation . 40
12.4 Transport channel coding/multiplexing for FLO . 40
13 Voice services over Adaptive Multi-user Channels on One Slot (VAMOS) . 41
13.1 General . 41
13.2 Network and MS Support for VAMOS . 42
13.3 Downlink Functionality . 43
13.3.1 Modulation . 43
13.3.1.1 Selection of modulation format . 43
13.3.2 Burst Format . 44
13.3.3 Associated Control Channels . 44
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13.3.3.1 FACCH . 44
13.3.3.2 SACCH . 44
13.4 Uplink Functionality. 44
13.4.1 Modulation, Burst Format and Training Sequence . 44
13.4.2 Associated Control Channels . 44
13.4.2.1 FACCH . 44
13.4.2.2 SACCH . 44
13.5 Channel Mode Adaptation . 44
Annex A (informative): Reference configuration . 45
Annex B (informative): Relations between specification . 46
Annex C (informative): Change history . 47
History . 50

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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.
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3GPP TS 45.001 version 13.0.0 Release 13 6 ETSI TS 145 001 V13.0.0 (2016-01)
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'.
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[20] 3GPP TS 45.056: 'GSM Cordless Telephony System (CTS); Phase 1; CTS-FP Radio subsystem'.
[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
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
Coverage Class: see definition in 3GPP TS 43.064 [8].
EC-EGPRS: 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 (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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- 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.
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. The (EC-)PACCH shall have the same TTI
configuration of the 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
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.
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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), and extended coverage broadcast control channel (EC-BCCH)) (see sub-
clause 1.3), CCCH (common control channel, including packet common control channel (PCCCH) and extended
coveage common control channel (EC-CCCH)) (see sub-clause 1.3), 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 associated control channel (EC-PACCH);
- packet timing advance control channel (PTCCH);
- broadcast control channel (BCCH);
- packet broadcast control channel (PBCCH);
- extended coverage broadcast channel (EC-BCCH);
- random access channel (i.e. uplink CCCH) (RACH);
- packet random access channel (i.e. uplink PCCCH) (PRACH);
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- 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);
- 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 will be used, meaning also all the sub-categories, irrespective of modulation used (SACCH will mean all
categories of SACCHs, SACCH/T will mean both the slow, TCH associated, control channels with and without
enhanced power control, etc.). Also EC-channels are considered to be a sub-category of the same logical channels as
non-EC-channels, unless otherwise stated.
The logical channels mentioned above are mapped on physical channels that are described in this set of technical
specifications. The different physical channels provide for the transmission of information pertaining to higher layers
according to a block structure.
3 Reference configuration
For the purpose of elaborating the physical layer specification, a reference configuration of the transmission chain is
used as shown in annex A. This reference configuration also indicates which parts are dealt with in details in which
technical specification. It shall be noted that only the transmission part is specified, the receiver being specified only via
the overall performance requirements. With reference to this configuration, the technical specifications in the 45 series
address the following functional units:
- 3GPP TS 45.002: burst building, and burst multiplexing;
- 3GPP TS 45.003: coding, reordering and partitioning, and interleaving;
- 3GPP TS 45.004: differential encoding, and modulation;
- 3GPP TS 45.005: transmitter, antenna, and receiver (overall performance).
NOTE: 3GPP TS 45.056 addresses the transmitter and receiver of the CTS-FP.
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This reference configuration defines also a number of points of vocabulary in relation to the name of bits at different
levels in the configuration. It must be outlined, in the case of the encrypted bits, that they are named only with respect to
their position after the encryption unit, and not to the fact that they pertain to a flow of information that is actually
encrypted.
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4 The block structures
The different block structures are described in more detail in 3GPP TS 45.003. A summarised description appears in
table 1, in terms of net bit rate, length and recurrence of blocks.
Table 1: Channel block structures
Type of channel net bit rate block length block recurrence
(kbit/s) (bits) (ms)
13,0 182 + 78 20
full rate speech TCH
12,2 170 + 74 20
enhanced full rate speech TCH
5,6 95 + 17 20
half rate speech TCH
Adaptive full rate speech TCH (12,2 kbit/s) 12,2 244 20
Adaptive full rate speech TCH (10,2 kbit/s) 10,2 204 20
Adaptive full rate speech TCH (7,95 kbit/s) 7,95 159 20
Adaptive full rate speech TCH (7,4 kbit/s) 7,4 148 20
Adaptive full rate speech TCH (6,7 kbit/s) 6,7 134 20
Adaptive full rate speech TCH (5,9 kbit/s) 5,9 118 20
Adaptive full rate speech TCH (5,15 kbit/s) 5,15 103 20
Adaptive full rate speech TCH (4,75 kbit/s) 4,75 95 20
Adaptive half rate speech TCH (7,95 kbit/s) 7,95 123 + 36 20
Adaptive half rate speech TCH (7,4 kbit/s) 7,4 120 + 28 20
Adaptive half rate speech TCH (6,7 kbit/s) 6,7 110 + 24 20
Adaptive half rate speech TCH (5,9 kbit/s) 5,9 102 + 16 20
Adaptive half rate speech TCH (5,15 kbit/s) 5,15 91 + 12 20
Adaptive half rate speech TCH (4,75 kbit/s) 4,75 83 + 12 20
Adaptive half rate 8-PSK speech TCH 12,2 244 20
(12,2 kbit/s)
Adaptive half rate 8-PSK speech TCH 10,2 204 20
(10,2 kbit/s)
Adaptive half rate 8-PSK speech TCH 7,95 159 20
(7,95 kbit/s)
Adaptive half rate 8-PSK speech TCH 7,4 148 20
(7,4 kbit/s)
Adaptive half rate 8-PSK speech TCH 6,7 134 20
(6,7 kbit/s)
Adaptive half rate 8-PSK speech TCH 5,9 118 20
(5,9 kbit/s)
Adaptive half rate 8-PSK speech TCH 5,15 103 20
(5,15 kbit/s)
Adaptive half rate 8-PSK speech TCH 4,75 95 20
(4,75 kbit/s)
Wideband Adaptive full rate speech TCH 12,65 253 20
(12,65 kbit/s)
Wideband Adaptive full rate speech TCH (8,85 8,85 177 20
kbit/s)
Wideband Adaptive full rate speech TCH (6,60 6,60 132 20
kbit/s)
Wideband Adaptive full rate 8-PSK speech 23,85 477 20
TCH (23,85 kbit/s)
Wideband Adaptive full rate 8-PSK speech 15,85 317 20
TCH (15,85 kbit/s)
Wideband Adaptive full rate 8-PSK speech 12,65 253 20
TCH (12,65 kbit/s)
Wideband Adaptive full rate 8-PSK speech 8,85 177 20
TCH (8,85 kbit/s)
Wideband Adaptive full rate 8-PSK speech 6,60 132 20
TCH (6,6 kbit/s)
(continued)
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Type of channel net bit rate block length block recurrence
(kbit/s) (bits) (ms)
Wideband Adaptive half rate 8-PSK speech 12,65 253 20
TCH (12,65 kbit/s)
Wideband Adaptive half rate 8-PSK speech 8,85 177 20
TCH (8,85 kbit/s)
Wideband Adaptive half rate 8-PSK speech 6,60 132 20
TCH (6,6 kbit/s)
43,5 870 20
data E-TCH (43,2 kbit/s)
32,0 640 20
data E-TCH (32,0 kbit/s)
data E-TCH (28,8 kbit/s) 29,0 580 20
14,5 290 20
data TCH (14,4 kbit/s)
12,0 60 5
data TCH (9,6 kbit/s)
6,0 60 10
data TCH (4,8 kbit/s)
3,6 36 10
data TCH (≤ 2,4 kbit/s)
PDTCH/F (CS-1) 9,05 181 -
PDTCH/F (CS-2) 13,4 268 -
PDTCH/F (CS-3) 15,6 312 -
PDTCH/F (CS-4) 21,4 428 -
PDTCH/H (CS-1) 4,525 181 -
PDTCH/H (CS-2) 6,7 268 -
PDTCH/H (CS-3) 7,8 312 -
PDTCH/H (CS-4) 10,7 428 -
EC-PDTCH/F (MCS-1/16) 10,18 2,65 212 -
EC-PDTCH/F (MCS-1/8) 10,17 5,3 212 -
EC-PDTCH/F (MCS-1/4) 10,16 10,6 212 -
10,15 11
(EC-)PDTCH/F (MCS-1) 10,6 (21,2) 212 -
10,15 11
(EC-)PDTCH/F (MCS-2) 13,0 (26,0) 260 -
10,15 11
(EC-)PDTCH/F (MCS-3) 16,6 (33,2) 332 -
10,15 11
(EC-)PDTCH/F (MCS-4) 19,4 (38,8) 388 -
10,15 11
(EC-)PDTCH/F (MCS-5) 24,05 (48,1) 481 -
10,15 11
(EC-)PDTCH/F (MCS-6) 31,25 (62,5) 625 -
10,15 11
(EC-)PDTCH/F (MCS-7) 47,45 (94,9) 949 -
10,15 11
(EC-)PDTCH/F (MCS-8) 57,05 (114,1) 1141 -
10,15 11
(EC-)PDTCH/F (MCS-9) 61,85 (123,7) 1237 -
13 11
PDTCH/F (DAS-5) 23,75 (47,50) 475 -
13 11
PDTCH/F (DAS-6) 28,55 (57,10) 571 -
13 11
PDTCH/F (DAS-7) 34,15 (68,30) 683 -
13 11
PDTCH/F (DAS-8) 46,90 (93,80) 938 -
13 11
PDTCH/F (DAS-9) 56,50 (113,00) 1130 -
13 11
PDTCH/F (DAS-10) 67,60 (135,20) 1352 -
13 11
PDTCH/F (DAS-11) 84,40 (168,80) 1688 -
13 11
PDTCH/F (DAS-12) 101,20 (202,40) 2024 -
13 11
PDTCH/F (DBS-5) 23,80 (47,60) 476 -
13 11
PDTCH/F (DBS-6) 31,00 (62,00) 620 -
13 11
PDTCH/F (DBS-7) 46,85 (93,70) 937 -
13 11
PDTCH/F (DBS-8) 61,25 (122,50) 1225 -
13 11
PDTCH/F (DBS-9) 69,95 (139,90) 1399 -
13 11
PDTCH/F (DBS-10) 91,559 (183,10) 1831 -
13 11
PDTCH/F (DBS-11) 112,30 (224,60) 2246 -
13 11
PDTCH/F (DBS-12) 121,90 (243,80) 2438 -
14 11
PDTCH/F (UAS-7) 47,65 (95,30) 953 -
14 11
PDTCH/F (UAS-8) 57,25 (114,50) 1145 -
14 11
PDTCH/F (UAS-9) 62,05 (124,10) 1241 -
ETSI
3GPP TS 45.001 version 13.0.0 Release 13 14 ETSI TS 145 001 V13.0.0 (2016-01)
Type of channel net bit rate block length block recurrence
(kbit/s) (bits) (ms)
14 11
PDTCH/F (UAS-10) 71,00 (142,00) 1420 -
14 11
PDTCH/F (UAS-11) 80,60 (161,20) 1612 -
14 11
PDTCH/F (UBS-5) 24,20 (48,40) 484 -
14 11
PDTCH/F (UBS-6) 31,40 (62,80) 628 -
14 11
PDTCH/F (UBS-7) 47,55 (95,10) 951 -
14 11
PDTCH/F (UBS-8) 61,95 (123,90) 1239 -
14 11
PDTCH/F (UBS-9) 70,95 (141,90) 1419 -
14 11
PDTCH/F (UBS-10) 92,55 (185,10) 1851 -
14 11
PDTCH/F (UBS-11) 113,60 (227,20) 2272 -
14 11
PDTCH/F (UBS-12) 123,20 (246,40) 2464 -
PDTCH/H (MCS-1) 5,3 212 -
PDTCH/H (MCS-2) 6,5 260 -
PDTCH/H (MCS-3) 8,3 332 -
PDTCH/H (MCS-4) 9,7 388 -
PDTCH/H (MCS-5) 12,025 481 -
PDTCH/H (MCS-6) 15,625 625 -
PDTCH/H (MCS-7) 23,725 949 -
PDTCH/H (MCS-8) 28,525 1141 -
PDTCH/H (MCS-9) 30,925 1237 -
full rate FACCH (FACCH/F) 9,2 184 20
half rate FACCH (FACCH/H) 4,6 184 40
enhanced circuit switched full rate FACCH (E-
9,2 184 20
FACCH/F)
full rate octal FACCH (O-FACCH/F) 9,2 184 20
half rate octal FACCH (O-FACCH/H) 4,6 184 40
SDCCH 184 3 060/13 (235)
598/765 (≈ 0,782)
168 + 16 480
115/300 (≈ 0,383)
SACCH (with TCH)
168 + 16
299/765 (≈ 0,391) 6 120/13 (≈ 471)
SACCH (with SDCCH)
7 12
PACCH/F - 181 (204) -
EC-PACCH, downlink15,16,17,18 - 80 -
EC-PACCH, uplink15,16,17,18 - 64 -
PACCH/H 181
BCCH 184
598/765 (≈ 0,782) 3 060/13 (≈ 235)
EC-BCCH 184
598/ (16*765) (≈ 0,049) 16*3 060/13 (≈ 3 766)
PBCCH 181 120
s*181/120 (≈1,508)
AGCH 184
n*598/765 (≈ 0,782) 3 060/13 (≈ 235)
EC-AGCH 88
20*286/765 (≈ 7,477) 3 060/13 (≈ 235)
5*286/(765) (≈ 1,869) 3 060/13 (≈ 235)
2*286/(765) (≈ 0,748) 3 060/13 (≈ 235)
286/(4*765) (≈ 0,093) 4*3 060/13 (≈ 942)
PAGCH  181
NCH m*598/765 (≈ 0,782) 184 3 060/13 (≈ 235)
PCH p*598/765 (≈ 0,782) 184 3 060/13 (≈ 235)
EC-PCH 16*286/765 (≈ 5,982) 88 3 060/13 (≈ 235)
4*286/(765) (≈ 1,495) 3 060/13 (≈ 235)
2*286/(8*765) (≈0,748) 3 060/13 (≈ 235)
286/(4*765) (≈ 0,093) 4*3 060/13 (≈ 942)
PPCH  181
RACH 8
r*26/765 (≈ 0,034) 3 060/13 (≈ 235)
PRACH (8 bit Access Burst) 8
r*26/765 (≈ 0,034)
ETSI
3GPP TS 45.001 version 13.0.0 Release 13 15 ETSI TS 145 001 V13.0.0 (2016-01)
Type of channel net bit rate block length block recurrence
(kbit/s) (bits) (ms)
EC-RACH (11 bit Access Burst) 11
51*143/3060 (≈ 2,383) 3 060/13 ((≈ 235)
12*143/3060 (≈ 0,561) 3 060/13 ((≈ 235)
6*143/3060 (≈ 0,280) 3 060/13 ((≈ 235)
143/(2*3060) ((≈ 0,023) 2*3 060/13 ((≈ 471)
PRACH (11 bit Access Burst) 11
r*143/3060 (≈ 0,047)
MPRACH (8 bit Access Burst) 8
r*26/765 (≈ 0,034)
MPRACH (11 bit Access Burst) 11
r*143/3060 (≈ 0,047)
CBCH 184
598/765 (≈ 0,782) 3 060/13 (≈ 235)
CTSBCH-SB 25 240
25/240 (≈ 0,104)
CTSPCH 184 240
184/240 (≈ 0,767)
CTSARCH 25 240
14*25/240 (≈ 0,104)
CTSAGCH 184 240
2*184/240 (≈ 0,767)
NOTE 1: For full rate speech, the block is divided into two classes according to the importance of the bits (182 bits for
class I and 78 bits for class II).
For enhanced full rate speech, the block is divided into two classes according to the importance of the bits
(170 bits for class I and 74 bits for class II).
NOTE 2: For half rate speech, the block is divided into two classes according to the importance of the bits (95 bits for
class I and 17 bits for class II).
NOTE 3: For data services, the net bit rate is the adaptation rate as defined in 3GPP TS 44.021.
NOTE 4: On SACCH, 16 bits are reserved for control information on layer 1, and 168 bits are used for higher layers.
NOTE 5: CCCH channels are common to all users of a cell; the total number of blocks (m, n, p, r) per recurrence
period is adjustable on a cell by cell basis and depends upon the parameters (BS_CC_CHANS,
BS_BCCH_SDCCH_COMB, BS_AG_BLKS_RES and NCP) broadcast on the BCCH and specified in 3GPP
TS 45.002 and 3GPP TS 44.018.
NOTE 6: The total number of PBCCH blocks (s) is adjustable on a cell by cell basis and depends upon the parameter
BS_PBCCH_BLKS broadcast on the first PBCCH block and specified in 3GPP TS 45.002 and 3GPP
TS 44.018.
NOTE 7: The net bit rate for these channels in a cell can change dynamically and depends on how PDCH are
configured in a cell, and upon the parameters BS_PBCCH_BLKS, BS_PAG_BLKS_RES and
BS_PRACH_BLKS broadcast on the PBCCH and specified in 3GPP TS 45.002 and 3GPP TS 44.018, as
well as upon how certain blocks on the PDCH are used (indicated by the message type).
NOTE 8: For adaptive half rate speech, the blocks are divided into two classes according to the importance of the bits
(the first number in the block length corresponds to the class I bits, the second number corresponds to the
class II bits).
NOTE 9: CTSBCH, CTSARCH, CTSPCH and CTSAGCH are only used in CTS.
NOTE 10: For EGPRS PDTCH, the block length in bits excludes the USF bits (downlink traffic) and all the error-check
bits, but includes the tail bits. For transmission using FANR, they also exclude the PAN bits. For Turbo coded
coding schemes (DAS-5 to DAS-12 and DBS-5 to DBS-12) the tail bits are not included in this calculation.
NOTE 11: The value outside the bracket applies for transmission using BTTI configuration, whereas the value in bracket
refers to the case of transmission using RTTI configuration.
NOTE 12: The value in bracket applies to TBFs using FANR (see 3GPP TS 44.060), when transmission of the PACCH
uses MCS-0.
NOTE 13: These channels are available only for the EGPRS2 downlink.
NOTE 14: These channels are available only for the EGPRS2 uplink.
NOTE 15: Applies to EC-EGPRS operation for CC1.
NOTE 16: Applies to EC-EGPRS operation for CC2.
NOTE 17: Applies to EC-EGPRS operation for CC3.
NOTE 18: Applies to EC-EGPRS operation for CC4.

5 Multiple access and timeslot structure
The access scheme is Time Division Multiple Access (TDMA) with eight basic physical channels per carrier. The
carrier separation is 200 kHz. A physical channel is therefore defined as a sequence of TDMA frames, a time slot
number (modulo 8) and a frequency hopping sequence.
The basic radio resource is a time slot lasting ≈ 576,9 µs (15/26 ms) and transmitting information at a modulation rate
of ≈ 270,833 ksymbol/s (1 625/6 ksymbol/s) when the symbol period is the normal symbol period (see 3GPP TS
45.010) or at a modulation rate of 325 ksymbol/s for when the symbol period is the reduced symbol period (see 3GPP
ETSI
3GPP TS 45.001 version 13.0.0 Release 13 16 ETSI TS 145 001 V13.0.0 (2016-01)
TS 45.010) . This means that the time slot duration, including guard time, is 156,25 symbols long when the symbol
period is the normal symbol period (see 3GPP TS 45.010) or 187,5 symbols long when the symbol period is the reduced
symbol period (see 3GPP TS 45.010).
We shall describe successively the time frame structures, the time slot structures and the channel organization. The
appropriate specifications will be found in 3GPP TS 45.002.

5.1 Hyperframes, superframes and multiframes
A diagrammatic representation of all the time frame structures is in figure 1. The longest recurrent time period of the
structure is called hyperframe and has a duration of 3 h 28 mn 53 s 760 ms (or 12 533,76 s). The TDMA frames are
numbered modulo this hyperframe (TDMA frame number, or FN, from 0 to 2 715 647). This long period is needed to
support cryptographic mechanisms defined in 3GPP TS 43.020.
One hyperframe is subdivided in 2 048 superframes which have a duration of 6,12 seconds. The superframe is the least
common multiple of the time frame structures. The superframe is itself subdivided in multiframes; four types of
multiframes exist in the system:
- a 26- multiframe (51 per superframe) with a duration of 120 ms, comprising 26 TDMA frames. This multiframe
is used to carry TCH (and SACCH/T) and FACCH;
- a 51- multiframe (26 per superframe) with a duration of ≈235,4 ms (3 060/13 ms), comprising 51 TDMA frames.
This multiframe is used to carry BCCH, EC-BCCH, CCCH (NCH, AGCH, PCH and RACH) , EC-CCCH (EC-
AGCH, EC-PCH and EC-RACH) and SDCCH (and SACCH/C).
- a 52-multiframe (25,5 per superframe) with a duration of 240 ms, comprising 52 TDMA frames. This multiframe
is used to carry PBCCH, PCCCH (PAGCH, PPCH and PRACH), PACCH, EC-PACCH, PDTCH, EC-PDTCH,
PTCCH and MPRACH. The 52-multiframe is not shown in Figure 1, but can be seen as two 26-multiframes,
with TDMA frames numbered from 0 to 51. For Compact, this 52-multiframe (51 per superframe) is used to
carry CFCCH, CSCH, CPBCCH, CPCCCH (CPAGCH, CPPCH, and CPRACH), PACCH, PDTCH, and
PTCCH.
- a 52-multiframe (25,5 per superframe) for CTS, with a duration of 240 ms, comprising 52 TDMA frames. This
multiframe is used to carry CTSCCH (CTSBCH, CTSPCH, CTSARCH and CTSAGCH). The 52-multiframe for
CTS is shown in Figure 2b.
A TDMA frame, comprising eight time slots has a duration of ≈ 4,62 (60/13) ms.
5.2 Time slots and bursts
The time slot is a time interval of ≈ 576,9 µs (15/26 ms), that is 156,25 symbol duration when using the normal symbol
period (see 3GPP TS 45.010) or 187,5 symbol duration when using the reduced symbol period (see 3GPP TS 45.010),
and its physical content is called a burst. Five different types of bursts exist in the system. A diagram of these bursts
appears in figure 1.
- normal burst (NB): this burst is used to ca
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