ETSI TS 125 212 V17.0.0 (2022-05)

Universal Mobile Telecommunications System (UMTS); Multiplexing and channel coding (FDD) (3GPP TS 25.212 version 17.0.0 Release 17)

RTS/TSGR-0025212vh00

General Information

• Status: Not Published
• Technical Committee: 3GPP RAN - Technical Specification Group Radio Access Network
• Current Stage: 12 - Completion
• Completion Date: 05-May-2022

Standards Content (Sample)

ETSI TS 125 212 V17.0.0 (2022-05)






TECHNICAL SPECIFICATION
Universal Mobile Telecommunications System (UMTS);
Multiplexing and channel coding (FDD)
(3GPP TS 25.212 version 17.0.0 Release 17)

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3GPP TS 25.212 version 17.0.0 Release 17 1 ETSI TS 125 212 V17.0.0 (2022-05)

Reference
RTS/TSGR-0025212vh00
Keywords
UMTS
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3GPP TS 25.212 version 17.0.0 Release 17 2 ETSI TS 125 212 V17.0.0 (2022-05)
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ETSI

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3GPP TS 25.212 version 17.0.0 Release 17 3 ETSI TS 125 212 V17.0.0 (2022-05)
Contents
Intellectual Property Rights . 2
Legal Notice . 2
Modal verbs terminology . 2
Foreword . 9
1 Scope . 10
2 References . 10
3 Definitions, symbols and abbreviations . 10
3.1 Definitions . 10
3.2 Symbols . 12
3.3 Abbreviations . 13
4 Multiplexing, channel coding and interleaving . 14
4.1 General . 14
4.2 General coding/multiplexing of TrCHs . 14
4.2.0 Transport channel concatenation . 19
4.2.1 CRC attachment . 19
4.2.1.1 CRC Calculation . 19
4.2.1.2 Relation between input and output of the CRC attachment block . 20
4.2.2 Transport block concatenation and code block segmentation . 20
4.2.2.1 Concatenation of transport blocks . 20
4.2.2.2 Code block segmentation . 20
4.2.3 Channel coding . 21
4.2.3.1 Convolutional coding . 22
4.2.3.2 Turbo coding . 23
4.2.3.2.1 Turbo coder . 23
4.2.3.2.2 Trellis termination for Turbo coder . 23
4.2.3.2.3 Turbo code internal interleaver . 24
4.2.3.3 Concatenation of encoded blocks . 27
4.2.4 Radio frame size equalisation . 27
st
4.2.5 1 interleaving . 28
4.2.5.1 Void. 28
st
4.2.5.2 1 interleaver operation . 28
st
4.2.5.3 Relation between input and output of 1 interleaving in uplink . 29
st
4.2.5.4 Relation between input and output of 1 interleaving in downlink . 29
4.2.6 Radio frame segmentation . 29
4.2.6.1 Relation between input and output of the radio frame segmentation block in uplink . 30
4.2.6.2 Relation between input and output of the radio frame segmentation block in downlink . 30
4.2.7 Rate matching . 30
4.2.7.1 Determination of rate matching parameters in uplink . 32
4.2.7.1.1 Determination of SF and number of PhCHs needed . 32
4.2.7.2 Determination of rate matching parameters in downlink . 35
4.2.7.2.1 Determination of rate matching parameters for fixed positions of TrCHs . 35
4.2.7.2.1A Determination of rate matching parameters for pseudo-flexible positions of TrCHs . 37
4.2.7.2.2 Determination of rate matching parameters for flexible positions of TrCHs . 37
4.2.7.3 Bit separation and collection in uplink . 39
4.2.7.3.1 Bit separation . 41
4.2.7.3.2 Bit collection . 41
4.2.7.4 Bit separation and collection in downlink . 42
4.2.7.4.1 Bit separation . 43
4.2.7.4.2 Bit collection . 43
4.2.7.5 Rate matching pattern determination . 44
4.2.8 TrCH multiplexing . 45
4.2.9 Insertion of discontinuous transmission (DTX) indication bits . 45
st
4.2.9.1 1 insertion of DTX indication bits . 45
nd
4.2.9.2 2 insertion of DTX indication bits . 46
ETSI

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3GPP TS 25.212 version 17.0.0 Release 17 4 ETSI TS 125 212 V17.0.0 (2022-05)
4.2.10 Physical channel segmentation . 47
4.2.10.1 Relation between input and output of the physical segmentation block in uplink . 47
4.2.10.2 Relation between input and output of the physical segmentation block in downlink . 47
nd
4.2.11 2 interleaving . 47
nd
4.2.11.1 2 interleaving for Secondary CCPCH with 16QAM . 48
4.2.12 Physical channel mapping . 49
4.2.12.1 Uplink . 49
4.2.12.1.1 UL_DPCH_10ms_Mode is not configured by higher layers, or, no compressed-mode

transmission gap overlaps with the first radio frame in the 20ms CI. 49
4.2.12.1.2 UL_DPCH_10ms_Mode is configured by higher layers, and, a compressed-mode
transmission gap overlaps with the first radio frame in 20ms CI . 49
4.2.12.2 Downlink . 50
4.2.13 Restrictions on different types of CCTrCHs . 50
4.2.13.1 Uplink Dedicated channel (DCH) . 50
4.2.13.2 Random Access Channel (RACH) . 51
4.2.13.3 Void. 51
4.2.13.4 Downlink Dedicated Channel (DCH) . 51
4.2.13.5 Void. 51
4.2.13.6 Broadcast channel (BCH) . 51
4.2.13.7 Forward access and paging channels (FACH and PCH) . 51
4.2.13.8 High Speed Downlink Shared Channel (HS-DSCH) associated with a DCH . 51
4.2.13.9 Enhanced Dedicated Channel (E-DCH) . 52
4.2.14 Multiplexing of different transport channels into one CCTrCH, and mapping of one CCTrCH onto
physical channels . 52
4.2.14.1 Allowed CCTrCH combinations for one UE . 53
4.2.14.1.1 Allowed CCTrCH combinations on the uplink . 53
4.2.14.1.2 Allowed CCTrCH combinations on the downlink . 53
4.3 Transport format detection . 53
4.3.1 Blind transport format detection . 54
4.3.1A Single transport format detection . 54
4.3.2 Transport format detection based on TFCI . 54
4.3.3 Coding of Transport-Format-Combination Indicator (TFCI) . 55
4.3.4 Void . 56
4.3.5 Mapping of TFCI words . 56
4.3.5.1 Mapping of TFCI word in normal mode in downlink, and in uplink when uplink DPCCH slot
format is not 5 . 56
4.3.5.1A Mapping of TFCI word in normal mode in uplink when uplink DPCCH slot format is 5 . 56
4.3.5.1.1 Mapping of TFCI bits for Secondary CCPCH with 16QAM . 56
4.3.5.2 Mapping of TFCI word in compressed mode . 57
4.3.5.2.1 Uplink compressed mode . 57
4.3.5.2.2 Downlink compressed mode . 57
4.3A Mapping of DL FET ACK/NACK bits . 58
4.4 Compressed mode . 59
4.4.1 Frame structure in the uplink . 59
4.4.2 Frame structure types in the downlink . 59
4.4.2A Frame structure in the downlink for F-DPCH . 60
4.4.2B Frame structure in the downlink for F-TPICH . 60
4.4.3 Transmission time reduction method . 60
4.4.3.1 Void. 60
4.4.3.2 Compressed mode by reducing the spreading factor by 2 . 60
4.4.3.3 Compressed mode by higher layer scheduling . 60
4.4.4 Transmission gap position . 61
4.4.5 Transmission gap position for E-DCH . 62
4.4.5.1 E-DPDCH Transmission Gap Position during Initial Transmissions. 62
4.4.5.2 E-DPDCH Transmission Gap Position during Retransmissions . 63
4.4.5.3 E-DPCCH Transmission Gap Position. 63
4.5 Coding for HS-DSCH . 63
4.5.1 CRC attachment for HS-DSCH . 64
4.5.1.1 CRC attachment method 1 for HS-DSCH . 64
4.5.1.2 CRC attachment method 2 for HS-DSCH . 65
4.5.1A Bit scrambling for HS-DSCH . 65
4.5.2 Code block segmentation for HS-DSCH . 65
ETSI

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3GPP TS 25.212 version 17.0.0 Release 17 5 ETSI TS 125 212 V17.0.0 (2022-05)
4.5.3 Channel coding for HS-DSCH. 66
4.5.4 Hybrid ARQ for HS-DSCH . 66
4.5.4.1 HARQ bit separation . 66
4.5.4.2 HARQ First Rate Matching Stage . 66
4.5.4.3 HARQ Second Rate Matching Stage . 67
4.5.4.4 HARQ bit collection . 68
4.5.5 Physical channel segmentation for HS-DSCH . 68
4.5.6 Interleaving for HS-DSCH . 69
4.5.7 Constellation re-arrangement for 16 QAM and 64QAM . 69
4.5.8 Physical channel mapping for HS-DSCH . 70
4.6 Coding for HS-SCCH type 1 . 70
4.6.1 Overview . 70
4.6.2 HS-SCCH information field mapping . 72
4.6.2.1 Redundancy and constellation version coding . 72
4.6.2.2 Modulation scheme mapping . 72
4.6.2.3 Channelization code-set mapping . 72
4.6.2.4 UE identity mapping . 73
4.6.2.5 HARQ process identifier mapping . 73
4.6.2.6 Transport block size index mapping . 73
4.6.3 Multiplexing of HS-SCCH information . 73
4.6.4 CRC attachment for HS-SCCH . 73
4.6.5 Channel coding for HS-SCCH . 74
4.6.6 Rate matching for HS-SCCH . 74
4.6.7 UE specific masking for HS-SCCH . 74
4.6.8 Physical channel mapping for HS-SCCH . 74
4.6A Coding for HS-SCCH type 2 . 74
4.6A.1 Overview . 74
4.6A.2 HS-SCCH Type 2 information field mapping . 76
4.6A.2.1 The first transmission . 76
4.6A.2.2 The second and the third transmissions . 76
4.6A.2.2.1 Special Information mapping . 76
4.6A.2.2.1.1 Transport-block size information mapping . 76
4.6A.2.2.1.2 Pointer to the previous transmission mapping . 77
4.6A.2.2.1.3 Second or third transmission mapping . 77
4.6A.2.2.2 Redundancy and Constellation Version mapping . 77
4.6A.2.2.3 Modulation scheme mapping . 77
4.6A.2.2.4 Channelization code-set mapping . 77
4.6A.2.2.5 UE identity mapping . 77
4.6A.3 Multiplexing of HS-SCCH Type 2 information. 77
4.6A.4 CRC attachment for HS-SCCH Type 2 . 77
...