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TECHNICAL SPECIFICATION
LTE;
Evolved Universal Terrestrial Radio Access (E-UTRA);
Multiplexing and channel coding
(3GPP TS 36.212 version 12.9.0 Release 12)
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3GPP TS 36.212 version 12.9.0 Release 12 1 ETSI TS 136 212 V12.9.0 (2018-01)
Reference
RTS/TSGR-0136212vc90
Keywords
LTE
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3GPP TS 36.212 version 12.9.0 Release 12 2 ETSI TS 136 212 V12.9.0 (2018-01)
Intellectual Property Rights
Essential patents
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
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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 36.212 version 12.9.0 Release 12 3 ETSI TS 136 212 V12.9.0 (2018-01)
Contents
Intellectual Property Rights . 2
Foreword . 2
Modal verbs terminology . 2
Foreword . 5
1 Scope . 6
2 References . 6
3 Definitions, symbols and abbreviations . 6
3.1 Definitions . 6
3.2 Symbols . 6
3.3 Abbreviations . 7
4 Mapping to physical channels . 7
4.1 Uplink . 7
4.2 Downlink . 8
4.3 Sidelink . 8
5 Channel coding, multiplexing and interleaving. 8
5.1 Generic procedures . 9
5.1.1 CRC calculation . 9
5.1.2 Code block segmentation and code block CRC attachment . 9
5.1.3 Channel coding . 11
5.1.3.1 Tail biting convolutional coding . 12
5.1.3.2 Turbo coding . 12
5.1.3.2.1 Turbo encoder . 12
5.1.3.2.2 Trellis termination for turbo encoder . 14
5.1.3.2.3 Turbo code internal interleaver . 14
5.1.4 Rate matching . 15
5.1.4.1 Rate matching for turbo coded transport channels . 15
5.1.4.1.1 Sub-block interleaver . 16
5.1.4.1.2 Bit collection, selection and transmission. 17
5.1.4.2 Rate matching for convolutionally coded transport channels and control information . 19
5.1.4.2.1 Sub-block interleaver . 20
5.1.4.2.2 Bit collection, selection and transmission. 21
5.1.5 Code block concatenation . 21
5.2 Uplink transport channels and control information . 22
5.2.1 Random access channel . 22
5.2.2 Uplink shared channel . 22
5.2.2.1 Transport block CRC attachment . 23
5.2.2.2 Code block segmentation and code block CRC attachment . 23
5.2.2.3 Channel coding of UL-SCH . 24
5.2.2.4 Rate matching . 24
5.2.2.5 Code block concatenation . 24
5.2.2.6 Channel coding of control information . 24
5.2.2.6.1 Channel quality information formats for wideband CQI reports . 36
5.2.2.6.2 Channel quality information formats for higher layer configured subband CQI reports . 37
5.2.2.6.3 Channel quality information formats for UE selected subband CQI reports . 41
5.2.2.6.4 Channel coding for CQI/PMI information in PUSCH . 42
5.2.2.6.5 Channel coding for more than 11 bits of HARQ-ACK information . 43
5.2.2.7 Data and control multiplexing . 44
5.2.2.8 Channel interleaver . 45
5.2.3 Uplink control information on PUCCH . 47
5.2.3.1 Channel coding for UCI HARQ-ACK . 47
5.2.3.2 Channel coding for UCI scheduling request . 52
5.2.3.3 Channel coding for UCI channel quality information . 52
5.2.3.3.1 Channel quality information formats for wideband reports . 53
ETSI
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3GPP TS 36.212 version 12.9.0 Release 12 4 ETSI TS 136 212 V12.9.0 (2018-01)
5.2.3.3.2 Channel quality information formats for UE-selected sub-band reports . 56
5.2.3.4 Channel coding for UCI channel quality information and HARQ-ACK . 60
5.2.4 Uplink control information on PUSCH without UL-SCH data . 60
5.2.4.1 Channel coding of control information . 61
5.2.4.2 Control information mapping . 61
5.2.4.3 Channel interleaver . 62
5.3 Downlink transport channels and control information . 62
5.3.1 Broadcast channel . 62
5.3.1.1 Transport block CRC attachment . 62
5.3.1.2 Channel coding . 63
5.3.1.3 Rate matching . 63
5.3.2 Downlink shared channel, Paging channel and Multicast channel . 63
5.3.2.1 Transport block CRC attachment . 64
5.3.2.2 Code block segmentation and code block CRC attachment . 64
5.3.2.3 Channel coding . 65
5.3.2.4 Rate matching . 65
5.3.2.5 Code block concatenation . 65
5.3.3 Downlink control information . 65
5.3.3.1 DCI formats. 66
5.3.3.1.1 Format 0 . 66
5.3.3.1.2 Format 1 . 67
5.3.3.1.3 Format 1A . 68
5.3.3.1.3A Format 1B . 70
5.3.3.1.4 Format 1C . 72
5.3.3.1.4A Format 1D . 73
5.3.3.1.5 Format 2 . 74
5.3.3.1.5A Format 2A . 78
5.3.3.1.5B Format 2B . 80
5.3.3.1.5C Format 2C . 81
5.3.3.1.5D Format 2D . 83
5.3.3.1.6 Format 3 . 84
5.3.3.1.7 Format 3A . 84
5.3.3.1.8 Format 4 . 84
5.3.3.1.9 Format 5 . 86
5.3.3.2 CRC attachment . 87
5.3.3.3 Channel coding . 87
5.3.3.4 Rate matching . 87
5.3.4 Control format indicator . 88
5.3.4.1 Channel coding . 88
5.3.5 HARQ indicator (HI) . 88
5.3.5.1 Channel coding . 89
5.4 Sidelink transport channels and control information . 89
5.4.1 Sidelink broadcast channel . 89
5.4.1.1 Transport block CRC attachment . 89
5.4.1.2 Channel coding . 90
5.4.1.3 Rate matching . 90
5.4.2 Sidelink shared channel . 90
5.4.3 Sidelink control information . 90
5.4.3.1 SCI formats . 90
5.4.3.1.1 SCI format 0 . 91
5.4.4 Sidelink discovery channel . 91
Annex A (informative): Change history . 92
History . 96
ETSI
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3GPP TS 36.212 version 12.9.0 Release 12 5 ETSI TS 136 212 V12.9.0 (2018-01)
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 36.212 version 12.9.0 Release 12 6 ETSI TS 136 212 V12.9.0 (2018-01)
1 Scope
The present document specifies the coding, multiplexing and mapping to physical channels for E-UTRA.
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] 3GPP TR 21.905: "Vocabulary for 3GPP Specifications".
[2] 3GPP TS 36.211: "Evolved Universal Terrestrial Radio Access (E-UTRA); Physical channels and
modulation".
[3] 3GPP TS 36.213: "Evolved Universal Terrestrial Radio Access (E-UTRA); Physical layer
procedures".
[4] 3GPP TS 36.306: "Evolved Universal Terrestrial Radio Access (E-UTRA); User Equipment (UE)
radio access capabilities".
[5] 3GPP TS36.321, "Evolved Universal Terrestrial Radio Access (E-UTRA); Medium Access
Control (MAC) protocol specification"
[6] 3GPP TS36.331, "Evolved Universal Terrestrial Radio Access (E-UTRA); Radio Resource
Control (RRC) protocol specification"
3 Definitions, symbols and abbreviations
3.1 Definitions
For the purposes of the present document, the terms and definitions given in [1] and the following apply. A term
defined in the present document takes precedence over the definition of the same term, if any, in [1].
Definition format
: .
3.2 Symbols
For the purposes of the present document, the following symbols apply:
DL
N Downlink bandwidth configuration, expressed in number of resource blocks [2]
RB
UL
N Uplink bandwidth configuration, expressed in number of resource blocks [2]
RB
SL
N Sidelink bandwidth configuration, expressed in number of resource blocks [2]
RB
RB
N Resource block size in the frequency domain, expressed as a number of subcarriers
sc
ETSI
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3GPP TS 36.212 version 12.9.0 Release 12 7 ETSI TS 136 212 V12.9.0 (2018-01)
PUSCH
N Number of SC-FDMA symbols carrying PUSCH in a subframe
symb
PUSCH-initial
N Number of SC-FDMA symbols carrying PUSCH in the initial PUSCH transmission subframe
symb
UL
N Number of SC-FDMA symbols in an uplink slot
symb
SL
N Number of SC-FDMA symbols in a sidelink slot
symb
N Number of SC-FDMA symbols used for SRS transmission in a subframe (0 or 1).
SRS
3.3 Abbreviations
For the purposes of the present document, the following abbreviations apply:
BCH Broadcast channel
CFI Control Format Indicator
CP Cyclic Prefix
CSI Channel State Information
DCI Downlink Control Information
DL-SCH Downlink Shared channel
EPDCCH Enhanced Physical Downlink Control channel
FDD Frequency Division Duplexing
HI HARQ indicator
MCH Multicast channel
PBCH Physical Broadcast channel
PCFICH Physical Control Format Indicator channel
PCH Paging channel
PDCCH Physical Downlink Control channel
PDSCH Physical Downlink Shared channel
PHICH Physical HARQ indicator channel
PMCH Physical Multicast channel
PMI Precoding Matrix Indicator
PRACH Physical Random Access channel
PSBCH Physical Sidelink Broadcast Channel
PSCCH Physical Sidelink Control Channel
PSDCH Physical Sidelink Discovery Channel
PSSCH Physical Sidelink Shared Channel PUCCH Physical Uplink Control channel
PUSCH Physical Uplink Shared channel
RACH Random Access channel
RI Rank Indication
SCI Sidelink Control Information
SL-BCH Sidelink Broadcast Channel
SL-DCH Sidelink Discovery Channel
SL-SCH Sidelink Shared Channel
SR Scheduling Request
SRS Sounding Reference Signal
TDD Time Division Duplexing
TPMI Transmitted Precoding Matrix Indicator
UCI Uplink Control Information
UL-SCH Uplink Shared channel
4 Mapping to physical channels
4.1 Uplink
Table 4.1-1 specifies the mapping of the uplink transport channels to their corresponding physical channels. Table 4.1-2
specifies the mapping of the uplink control channel information to its corresponding physical channel.
ETSI
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3GPP TS 36.212 version 12.9.0 Release 12 8 ETSI TS 136 212 V12.9.0 (2018-01)
Table 4.1-1
TrCH Physical Channel
UL-SCH PUSCH
RACH PRACH
Table 4.1-2
Control information Physical Channel
UCI PUCCH, PUSCH
4.2 Downlink
Table 4.2-1 specifies the mapping of the downlink transport channels to their corresponding physical channels. Table
4.2-2 specifies the mapping of the downlink control channel information to its corresponding physical channel.
Table 4.2-1
TrCH Physical Channel
DL-SCH PDSCH
BCH PBCH
PCH PDSCH
MCH PMCH
Table 4.2-2
Control information Physical Channel
CFI PCFICH
HI PHICH
DCI PDCCH, EPDCCH
4.3 Sidelink
Table 4.3-1 specifies the mapping of the sidelink transport channels to their corresponding physical channels. Table 4.3-
2 specifies the mapping of the sidelink control information to its corresponding physical channel.
Table 4.3-1
TrCH Physical Channel
SL-SCH PSSCH
SL-BCH PSBCH
SL-DCH PSDCH
Table 4.3-2
Control information Physical Channel
SCI PSCCH
5 Channel coding, multiplexing and interleaving
Data and control streams from/to MAC layer are encoded /decoded to offer transport and control services over the radio
transmission link. Channel coding scheme is a combination of error detection, error correcting, rate matching,
interleaving and transport channel or control information mapping onto/splitting from physical channels.
ETSI
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3GPP TS 36.212 version 12.9.0 Release 12 9 ETSI TS 136 212 V12.9.0 (2018-01)
5.1 Generic procedures
This section contains coding procedures which are used for more than one transport channel or control information
type.
5.1.1 CRC calculation
Denote the input bits to the CRC computation by a , a , a , a ,., a , and the parity bits by p , p , p , p ,., p . A
0 1 2 3 A−1 0 1 2 3 L−1
is the size of the input sequence and L is the number of parity bits. The parity bits are generated by one of the following
cyclic generator polynomials:
24 23 18 17 14 11 10 7 6 5 4 3
- g (D) = [D + D + D + D + D + D + D + D + D + D + D + D + D + 1] and;
CRC24A
24 23 6 5
- g (D) = [D + D + D + D + D + 1] for a CRC length L = 24 and;
CRC24B
16 12 5
- g (D) = [D + D + D + 1] for a CRC length L = 16.
CRC16
8 7 4 3
- g (D) = [D + D + D + D + D + 1] for a CRC length of L = 8.
CRC8
The encoding is performed in a systematic form, which means that in GF(2), the polynomial:
A+23 A+22 24 23 22 1
a D + a D +.+ a D + p D + p D +.+ p D + p
0 1 A−1 0 1 22 23
yields a remainder equal to 0 when divided by the corresponding length-24 CRC generator polynomial, g (D) or
CRC24A
g (D), the polynomial:
CRC24B
A+15 A+14 16 15 14 1
a D + a D +.+ a D + p D + p D +.+ p D + p
0 1 A−1 0 1 14 15
yields a remainder equal to 0 when divided by g (D), and the polynomial:
CRC16
A+7 A+6 8 7 6 1
a D + a D + . + a D + p D + p D + . + p D + p
0 1 A−1 0 1 6 7
yields a remainder equal to 0 when divided by g (D).
CRC8
The bits after CRC attachment are denoted by b ,b , b , b ,.,b , where B = A+ L. The relation between a and b is:
k k
0 1 2 3 B−1
b = a for k = 0
...