3GPP TS 25.212

ht1688 · 发表于 2010-11-9 03:42:58

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Technical Specification Group Radio Access Network;
Multiplexing and channel coding (FDD)
(Release 9)

The present document describes the characteristics of the Layer 1 multiplexing and channel coding in the FDD mode of
UTRA.

1 Scope .................................................................................................................................................. 9
2 References .......................................................................................................................................... 9
3 Definitions, symbols and abbreviations ............................................................................................... 9
3.1 Definitions ................................................................................................................................................... 9
3.2 Symbols ..................................................................................................................................................... 10
3.3 Abbreviations............................................................................................................................................. 11
4 Multiplexing, channel coding and interleaving .................................................................................. 12
4.1 General ...................................................................................................................................................... 12
4.2 General coding/multiplexing of TrCHs ....................................................................................................... 12
4.2.1 CRC attachment ................................................................................................................................... 15
4.2.1.1 CRC Calculation ............................................................................................................................. 15
4.2.1.2 Relation between input and output of the CRC attachment block ...................................................... 15
4.2.2 Transport block concatenation and code block segmentation.................................................................. 16
4.2.2.1 Concatenation of transport blocks .................................................................................................... 16
4.2.2.2 Code block segmentation ................................................................................................................. 16
4.2.3 Channel coding ..................................................................................................................................... 17
4.2.3.1 Convolutional coding ...................................................................................................................... 17
4.2.3.2 Turbo coding ................................................................................................................................... 18
4.2.3.2.1 Turbo coder ............................................................................................................................... 18
4.2.3.2.2 Trellis termination for Turbo coder ............................................................................................. 19
4.2.3.2.3 Turbo code internal interleaver ................................................................................................... 19
4.2.3.3 Concatenation of encoded blocks ..................................................................................................... 23
4.2.4 Radio frame size equalisation ................................................................................................................ 23
4.2.5 1st interleaving ...................................................................................................................................... 23
4.2.5.1 Void ................................................................................................................................................ 23
4.2.5.2 1st interleaver operation ................................................................................................................... 23
4.2.5.3 Relation between input and output of 1st interleaving in uplink ......................................................... 24
4.2.5.4 Relation between input and output of 1st interleaving in downlink .................................................... 25
4.2.6 Radio frame segmentation ..................................................................................................................... 25
4.2.6.1 Relation between input and output of the radio frame segmentation block in uplink .......................... 25
4.2.6.2 Relation between input and output of the radio frame segmentation block in downlink ..................... 25
4.2.7 Rate matching ....................................................................................................................................... 25
4.2.7.1 Determination of rate matching parameters in uplink........................................................................ 27
4.2.7.1.1 Determination of SF and number of PhCHs needed .................................................................... 27
4.2.7.2 Determination of rate matching parameters in downlink ................................................................... 30
4.2.7.2.1 Determination of rate matching parameters for fixed positions of TrCHs ..................................... 30
4.2.7.2.2 Determination of rate matching parameters for flexible positions of TrCHs ................................. 32
4.2.7.3 Bit separation and collection in uplink ............................................................................................. 34
4.2.7.3.1 Bit separation ............................................................................................................................. 36
4.2.7.3.2 Bit collection ............................................................................................................................. 36
4.2.7.4 Bit separation and collection in downlink ......................................................................................... 37
4.2.7.4.1 Bit separation ............................................................................................................................. 38
4.2.7.4.2 Bit collection ............................................................................................................................. 38
4.2.7.5 Rate matching pattern determination ................................................................................................ 39
4.2.8 TrCH multiplexing ............................................................................................................................... 40
4.2.9 Insertion of discontinuous transmission (DTX) indication bits ............................................................... 40
4.2.9.1 1st insertion of DTX indication bits .................................................................................................. 40
4.2.9.2 2nd insertion of DTX indication bits ................................................................................................. 41
4.2.10 Physical channel segmentation .............................................................................................................. 42
4.2.10.1 Relation between input and output of the physical segmentation block in uplink ............................... 42
4.2.10.2 Relation between input and output of the physical segmentation block in downlink .......................... 42
4.2.11 2nd interleaving ..................................................................................................................................... 42
4.2.11.1 2nd interleaving for Secondary CCPCH with 16QAM ....................................................................... 43
4.2.12 Physical channel mapping ..................................................................................................................... 44
4.2.12.1 Uplink ............................................................................................................................................. 44
4.2.12.2 Downlink ........................................................................................................................................ 44
4.2.13 Restrictions on different types of CCTrCHs .......................................................................................... 45
4.2.13.1 Uplink Dedicated channel (DCH) .................................................................................................... 45
4.2.13.2 Random Access Channel (RACH) ................................................................................................... 45
4.2.13.3 Void ................................................................................................................................................ 45
4.2.13.4 Downlink Dedicated Channel (DCH) ............................................................................................... 45
4.2.13.5 Void ................................................................................................................................................ 45
4.2.13.6 Broadcast channel (BCH) ................................................................................................................ 45
4.2.13.7 Forward access and paging channels (FACH and PCH) .................................................................... 46
4.2.13.8 High Speed Downlink Shared Channel (HS-DSCH) associated with a DCH ..................................... 46
4.2.13.9 Enhanced Dedicated Channel (E-DCH) ........................................................................................... 46
4.2.14 Multiplexing of different transport channels into one CCTrCH, and mapping of one CCTrCH onto
physical channels .................................................................................................................................. 46
4.2.14.1 Allowed CCTrCH combinations for one UE .................................................................................... 47
4.2.14.1.1 Allowed CCTrCH combinations on the uplink ............................................................................ 47
4.2.14.1.2 Allowed CCTrCH combinations on the downlink ....................................................................... 47
4.3 Transport format detection ......................................................................................................................... 47
4.3.1 Blind transport format detection ............................................................................................................ 48
4.3.1a Single transport format detection ........................................................................................................... 48
4.3.2 Transport format detection based on TFCI............................................................................................. 48
4.3.3 Coding of Transport-Format-Combination Indicator (TFCI) .................................................................. 49
4.3.4 Void ..................................................................................................................................................... 50
4.3.5 Mapping of TFCI words........................................................................................................................ 50
4.3.5.1 Mapping of TFCI word in normal mode ........................................................................................... 50
4.3.5.1.1 Mapping of TFCI bits for Secondary CCPCH with 16QAM ........................................................ 50
4.3.5.2 Mapping of TFCI word in compressed mode.................................................................................... 50
4.3.5.2.1 Uplink compressed mode ........................................................................................................... 50
4.3.5.2.2 Downlink compressed mode....................................................................................................... 51
4.4 Compressed mode ...................................................................................................................................... 52
4.4.1 Frame structure in the uplink ................................................................................................................. 52
4.4.2 Frame structure types in the downlink ................................................................................................... 52
4.4.2A Frame structure in the downlink for F-DPCH ........................................................................................ 53
4.4.3 Transmission time reduction method ..................................................................................................... 53
4.4.3.1 Void ................................................................................................................................................ 53
4.4.3.2 Compressed mode by reducing the spreading factor by 2 .................................................................. 53
4.4.3.3 Compressed mode by higher layer scheduling .................................................................................. 53
4.4.4 Transmission gap position ..................................................................................................................... 53
4.4.5 Transmission gap position for E-DCH ................................................................................................... 55
4.4.5.1 E-DPDCH Transmission Gap Position during Initial Transmissions ................................................. 55
4.4.5.2 E-DPDCH Transmission Gap Position during Retransmissions ........................................................ 56
4.4.5.3 E-DPCCH Transmission Gap Position ............................................................................................. 56
4.5 Coding for HS-DSCH ................................................................................................................................ 56
4.5.1 CRC attachment for HS-DSCH ............................................................................................................. 57
4.5.1.1 CRC attachment method 1 for HS-DSCH ........................................................................................ 57
4.5.1.2 CRC attachment method 2 for HS-DSCH ........................................................................................ 58
4.5.1a Bit scrambling for HS-DSCH ................................................................................................................ 58
4.5.2 Code block segmentation for HS-DSCH ................................................................................................ 58
4.5.3 Channel coding for HS-DSCH .............................................................................................................. 59
4.5.4 Hybrid ARQ for HS-DSCH .................................................................................................................. 59
4.5.4.1 HARQ bit separation ....................................................................................................................... 59
4.5.4.2 HARQ First Rate Matching Stage .................................................................................................... 59
4.5.4.3 HARQ Second Rate Matching Stage ................................................................................................ 60
4.5.4.4 HARQ bit collection ........................................................................................................................ 61
4.5.5 Physical channel segmentation for HS-DSCH ....................................................................................... 61
4.5.6 Interleaving for HS-DSCH .................................................................................................................... 62
4.5.7 Constellation re-arrangement for 16 QAM and 64QAM ........................................................................ 62
4.5.8 Physical channel mapping for HS-DSCH .............................................................................................. 63
4.6 Coding for HS-SCCH type 1 ...................................................................................................................... 63
4.6.1 Overview .............................................................................................................................................. 63
4.6.2 HS-SCCH information field mapping .................................................................................................... 65
4.6.2.1 Redundancy and constellation version coding .................................................................................. 65
4.6.2.2 Modulation scheme mapping ........................................................................................................... 66
4.6.2.3 Channelization code-set mapping..................................................................................................... 66
4.6.2.4 UE identity mapping........................................................................................................................ 67
4.6.2.5 HARQ process identifier mapping ................................................................................................... 67
4.6.2.6 Transport block size index mapping ................................................................................................. 67
4.6.3 Multiplexing of HS-SCCH information ................................................................................................. 67
4.6.4 CRC attachment for HS-SCCH ............................................................................................................. 67
4.6.5 Channel coding for HS-SCCH .............................................................................................................. 68
4.6.6 Rate matching for HS-SCCH ................................................................................................................ 68
4.6.7 UE specific masking for HS-SCCH ....................................................................................................... 68
4.6.8 Physical channel mapping for HS-SCCH............................................................................................... 68
4.6A Coding for HS-SCCH type 2 ...................................................................................................................... 68
4.6A.1 Overview .............................................................................................................................................. 68
4.6A.2 HS-SCCH Type 2 information field mapping ........................................................................................ 69
4.6A.2.1 The first transmission ................................................................................................................. 69
4.6A.2.2 The second and the third transmissions ....................................................................................... 70
4.6A.2.2.1 Special Information mapping ................................................................................................ 70
4.6A.2.2.1.1 Transport-block size information mapping ....................................................................... 70
4.6A.2.2.1.2 Pointer to the previous transmission mapping .................................................................. 70
4.6A.2.2.1.3 Second or third transmission mapping.............................................................................. 70
4.6A.2.2.2 Redundancy and Constellation Version mapping ................................................................... 71
4.6A.2.2.3 Modulation scheme mapping ................................................................................................ 71
4.6A.2.2.4 Channelization code-set mapping .......................................................................................... 71
4.6A.2.2.5 UE identity mapping ............................................................................................................. 71
4.6A.3 Multiplexing of HS-SCCH Type 2 information ..................................................................................... 71
4.6A.4 CRC attachment for HS-SCCH Type 2 .................................................................................................. 71
4.6A.5 Channel coding for HS-SCCH Type 2 ................................................................................................... 71
4.6A.6 Rate matching for HS-SCCH Type 2 ..................................................................................................... 71
4.6A.7 UE specific masking for HS-SCCH Type 2 ........................................................................................... 71
4.6A.8 Physical channel mapping for HS-SCCH Type 2 ................................................................................... 71
4.6B Coding for HS-SCCH type 3 ...................................................................................................................... 72
4.6B.1 Overview .............................................................................................................................................. 72
4.6B.2 HS-SCCH type 3 information field mapping ......................................................................................... 73
4.6B.2.1 Redundancy and constellation version coding .................................................................................. 73
4.6B.2.2 Modulation scheme and number of transport blocks mapping ........................................................... 74
4.6B.2.3 Channelization code-set mapping..................................................................................................... 74
4.6B.2.4 UE identity mapping........................................................................................................................ 75
4.6B.2.5 HARQ process identifier mapping ................................................................................................... 75
4.6B.2.6 Transport block size index mapping ................................................................................................. 75
4.6B.2.7 Precoding Weight Information mapping........................................................................................... 75
4.6B.3 Multiplexing of HS-SCCH type 3 information ....................................................................................... 76
4.6B.4 CRC attachment for HS-SCCH type 3 ................................................................................................... 76
4.6B.5 Channel coding for HS-SCCH type 3 .................................................................................................... 77
4.6B.6 Rate matching for HS-SCCH type 3 ...................................................................................................... 77
4.6B.7 UE specific masking for HS-SCCH type 3 ............................................................................................ 77
4.6B.8 Physical channel mapping for HS-SCCH type 3 .................................................................................... 77
4.6C Coding for HS-SCCH orders ...................................................................................................................... 78
4.6C.1 Overview .............................................................................................................................................. 78
4.6C.2 HS-SCCH Order information field mapping .......................................................................................... 78
4.6C.2.1 Order type mapping ......................................................................................................................... 78
4.6C.2.2 Order mapping ................................................................................................................................ 78
4.6C.2.2.1 Orders for activation and deactivation of DTX, DRX and HS-SCCH-less operation and for
HS-DSCH serving cell change.................................................................................................... 78
4.6C.2.2.2 Orders for activation and deactivation of Secondary serving HS-DSCH cell and secondary
uplink frequency ........................................................................................................................ 78
4.6C.2.3 UE identity mapping........................................................................................................................ 79
4.7 Coding for HS-DPCCH .............................................................................................................................. 79
4.7.1 Overview .............................................................................................................................................. 79
4.7.2 Channel coding for HS-DPCCH when the UE is not configured in MIMO mode and
Secondary_Cell_Active is 0 .................................................................................................................. 80
4.7.2.1 Channel coding for HS-DPCCH HARQ-ACK ................................................................................. 80
4.7.2.2 Channel coding for HS-DPCCH channel quality indication .............................................................. 81
4.7.3 Channel coding for HS-DPCCH when the UE is configured in MIMO mode and
Secondary_Cell_Active is 0 .................................................................................................................. 81
4.7.3.1 Channel coding for HS-DPCCH HARQ-ACK ................................................................................. 82
4.7.3.2 Channel coding for HS-DPCCH composite precoding control indication and channel quality
indication ........................................................................................................................................ 82
4.7.3.2.1 Bit mapping of Type A channel quality indication ............................................................................ 82
4.7.3.2.2 Bit mapping of Type B channel quality indication ............................................................................ 82
4.7.3.2.3 Bit mapping of precoding control indication .................................................................................... 83
4.7.3.2.4 Composite precoding control indication and channel quality indication bits ...................................... 83
4.7.3.2.5 Block encoding of composite precoding control indication and channel quality indication bits .......... 83
4.7.3A Channel coding for HS-DPCCH when the UE is not configured in MIMO mode and
Secondary_Cell_Active is not 0 ............................................................................................................ 84
4.7.3A.1 Channel coding for the composite HS-DPCCH HARQ-ACK ........................................................... 84
4.7.3A.2 Channel coding for HS-DPCCH composite channel quality indication.............................................. 85
4.7.3A.2.1 Composite channel quality indication bits ........................................................................................ 85
4.7.3A.2.2 Block encoding of composite channel quality indication bits ............................................................ 86
4.7.3B Channel coding for HS-DPCCH when the UE is configured in MIMO mode and
Secondary_Cell_Active is not 0 ............................................................................................................ 86
4.7.3B.1 Channel coding for the composite HS-DPCCH HARQ-ACK ........................................................... 86
4.7.3B.2 Channel coding for HS-DPCCH composite precoding control indication and channel quality
indication ........................................................................................................................................ 87
4.7.4 Physical channel mapping for HS-DPCCH ............................................................................................ 87
4.8 Coding for E-DCH ..................................................................................................................................... 87
4.8.1 CRC attachment for E-DCH .................................................................................................................. 88
4.8.2 Code block segmentation for E-DCH .................................................................................................... 88
4.8.3 Channel coding for E-DCH ................................................................................................................... 89
4.8.4 Physical layer HARQ functionality and rate matching for E-DCH ......................................................... 89
4.8.4.1 Determination of SF, modulation scheme and number of PhCHs needed .......................................... 89
4.8.4.2 HARQ bit separation ....................................................................................................................... 90
4.8.4.3 HARQ Rate Matching Stage ............................................................................................................ 90
4.8.4.4 HARQ bit collection ........................................................................................................................ 91
4.8.5 Physical channel segmentation for E-DCH ............................................................................................ 91
4.8.6 Interleaving for E-DCH ........................................................................................................................ 91
4.8.7 Physical channel mapping for E-DCH ................................................................................................... 92
4.9 Coding for E-DPCCH ................................................................................................................................ 92
4.9.1 Overview .............................................................................................................................................. 92
4.9.2 E-DPCCH information field mapping.................................................................................................... 93
4.9.2.1 Information field mapping of E-TFCI .............................................................................................. 93
4.9.2.2 Information field mapping of retransmission sequence number ......................................................... 93
4.9.2.3 Information field mapping of the "Happy" bit .................................................................................. 94
4.9.3 Multiplexing of E-DPCCH information ................................................................................................. 94
4.9.4 Channel coding for E-DPCCH .............................................................................................................. 94
4.9.5 Physical channel mapping for E-DPCCH .............................................................................................. 94
4.10 Coding for E-AGCH .................................................................................................................................. 94
4.10.1 Overview .............................................................................................................................................. 94
4.10.1A E-AGCH information field mapping ..................................................................................................... 95
4.10.1A.1 Information field mapping of the Absolute Grant Value ................................................................... 95
4.10.1A.2 Information field mapping of the Absolute Grant Scope ................................................................... 97
4.10.1B Multiplexing of E-AGCH information ................................................................................................... 97
4.10.2 CRC attachment for E-AGCH ............................................................................................................... 98
4.10.3 Channel coding for E-AGCH ................................................................................................................ 98
4.10.4 Rate matching for E-AGCH .................................................................................................................. 98
4.10.5 Physical channel mapping for E-AGCH ................................................................................................ 98
4.11 Mapping for E-RGCH Relative Grant ......................................................................................................... 98
4.11.1 Overview .............................................................................................................................................. 98
4.11.2 Relative Grant mapping ........................................................................................................................ 98
4.12 Mapping for E-HICH ACK/NACK ............................................................................................................ 98
4.12.1 Overview .............................................................................................................................................. 98
4.12.2 ACK/NACK mapping ........................................................................................................................... 99