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TECHNICAL SPECIFICATION
LTE;
Evolved Universal Terrestrial Radio Access (E-UTRA);
Physical channels and modulation
(3GPP TS 36.211 version 17.2.0 Release 17)
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3GPP TS 36.211 version 17.2.0 Release 17 1 ETSI TS 136 211 V17.2.0 (2022-08)
Reference
RTS/TSGR-0136211vh20
Keywords
LTE
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3GPP TS 36.211 version 17.2.0 Release 17 2 ETSI TS 136 211 V17.2.0 (2022-08)
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3GPP TS 36.211 version 17.2.0 Release 17 3 ETSI TS 136 211 V17.2.0 (2022-08)
Contents
Intellectual Property Rights . 2
Legal Notice . 2
Modal verbs terminology . 2
Foreword . 9
1 Scope . 10
2 References . 10
3 Symbols and abbreviations . 11
3.1 Symbols . 11
3.2 Abbreviations . 15
4 Frame structure . 15
4.1 Frame structure type 1 . 16
4.2 Frame structure type 2 . 17
4.3 Frame structure type 3 . 18
5 Uplink . 20
5.1 Overview . 20
5.1.1 Physical channels . 20
5.1.2 Physical signals . 20
5.2 Slot structure and physical resources. 20
5.2.1 Resource grid . 20
5.2.2 Resource elements . 22
5.2.3 Resource blocks . 22
5.2.4 Narrowbands and widebands . 22
5.2.5 Guard period for narrowband and wideband retuning . 23
5.3 Physical uplink shared channel . 25
5.3.1 Scrambling . 25
5.3.2 Modulation . 26
5.3.2A Layer mapping . 27
5.3.2A.1 Layer mapping for transmission on a single antenna port . 27
5.3.2A.2 Layer mapping for spatial multiplexing . 27
5.3.3 Transform precoding. 28
5.3.3A Precoding . 28
5.3.3A.1 Precoding for transmission on a single antenna port . 28
5.3.3A.2 Precoding for spatial multiplexing . 28
5.3.4 Mapping to physical resources. 31
5.4 Physical uplink control channel . 37
5.4.1 PUCCH formats 1, 1a and 1b . 38
5.4.2 PUCCH formats 2, 2a and 2b . 41
5.4.2A PUCCH format 3 . 42
5.4.2B PUCCH format 4 . 44
5.4.2C PUCCH format 5 . 44
5.4.3 Mapping to physical resources. 45
5.4A Short Physical Uplink Control Channel . 48
5.4A.1 General . 48
5.4A.2 SPUCCH formats 1,1a,1b . 48
5.4A.2.1 Slot-SPUCCH . 48
5.4A.2.2 Subslot-SPUCCH . 49
5.4A.3 SPUCCH format 3 . 50
5.4A.3.1 Slot-SPUCCH . 50
5.4A.4 SPUCCH format 4 . 50
5.4A.4.1 Slot-SPUCCH . 50
5.4A.4.2 Subslot-SPUCCH . 51
5.4A.5 Mapping to physical resources. 51
5.5 Reference signals . 55
ETSI
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3GPP TS 36.211 version 17.2.0 Release 17 4 ETSI TS 136 211 V17.2.0 (2022-08)
5.5.1 Generation of the reference signal sequence . 55
RB
5.5.1.1 Base sequences of length or larger . 56
3 N
sc
RB
5.5.1.2 Base sequences of length less than . 57
3 N
sc
5.5.1.3 Group hopping . 61
5.5.1.4 Sequence hopping . 62
5.5.1.5 Determining virtual cell identity for sequence generation . 62
5.5.2 Demodulation reference signal . 63
5.5.2.1 Demodulation reference signal for PUSCH . 63
5.5.2.1.1 Reference signal sequence . 63
5.5.2.1.2 Mapping to physical resources . 67
5.5.2.1A Demodulation reference signal for PUSCH with sub-PRB allocations . 68
5.5.2.1A.1 Reference signal sequence using modulation schemes other than π/2-BPSK . 68
5.5.2.1A.2 Reference signal sequence using π/2-BPSK modulation scheme . 69
5.5.2.1A.3 Group hopping . 70
5.5.2.1A.4 Mapping to physical resources . 71
5.5.2.2 Demodulation reference signal for PUCCH . 71
5.5.2.2.1 Reference signal sequence . 71
5.5.2.2.2 Mapping to physical resources . 73
5.5.2.3 Demodulation reference signal for SPUCCH. 74
5.5.2.3.1 Reference signal sequence . 74
5.5.2.3.2 Mapping to physical resources . 74
5.5.3 Sounding reference signal . 76
5.5.3.1 Sequence generation. 76
5.5.3.1.1 Sequence generation for basic SRS . 76
5.5.3.1.2 Sequence generation for additional SRS . 76
5.5.3.2 Mapping to physical resources . 77
5.5.3.2.1 Mapping to physical resources for basic SRS . 77
5.5.3.2.2 Mapping to physical resources for additional SRS . 79
5.5.3.3 Sounding reference signal subframe configuration . 80
5.6 SC-FDMA baseband signal generation . 82
5.6A SC-FDMA baseband signal generation for PUSCH using sub-PRB allocations . 83
5.6A.1 Modulation schemes other than π/2-BPSK . 83
5.6A.2 Modulation scheme π/2-BPSK . 83
5.7 Physical random access channel . 84
5.7.1 Time and frequency structure . 84
5.7.2 Preamble sequence generation . 91
5.7.3 Baseband signal generation. 96
5.8 Modulation and upconversion . 97
6 Downlink . 98
6.1 Overview . 98
6.1.1 Physical channels . 98
6.1.2 Physical signals . 98
6.2 Slot structure and physical resource elements . 99
6.2.1 Resource grid . 99
6.2.2 Resource elements . 100
6.2.3 Resource blocks . 101
6.2.3.1 Virtual resource blocks of localized type . 102
6.2.3.2 Virtual resource blocks of distributed type . 102
6.2.4 Resource-element groups (REGs) . 103
6.2.4A Enhanced Resource-Element Groups (EREGs) . 104
6.2.4B Short Resource-Element Groups (SREGs) . 104
6.2.5 Guard period for half-duplex FDD operation . 104
6.2.6 Guard Period for TDD Operation . 105
6.2.7 Narrowbands and widebands . 105
6.2.8 Guard period for narrowband and wideband retuning . 106
6.3 General structure for downlink physical channels . 106
6.3.1 Scrambling . 107
6.3.2 Modulation . 108
6.3.3 Layer mapping . 108
6.3.3.1 Layer mapping for transmission on a single antenna port . 108
6.3.3.2 Layer mapping for spatial multiplexing . 109
ETSI
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3GPP TS 36.211 version 17.2.0 Release 17 5 ETSI TS 136 211 V17.2.0 (2022-08)
6.3.3.3 Layer mapping for transmit diversity . 110
6.3.4 Precoding . 110
6.3.4.1 Precoding for transmission on a single antenna port . 110
6.3.4.2 Precoding for spatial multiplexing using antenna ports with cell-specific reference signals . 111
6.3.4.2.1 Precoding without CDD . 111
6.3.4.2.2 Precoding for large delay CDD . 111
6.3.4.2.3 Codebook for precoding and CSI reporting . 112
6.3.4.3 Precoding for transmit diversity . 113
6.3.4.4 Precoding for spatial multiplexing using antenna ports with UE-specific reference signals. 114
6.3.5 Mapping to resource elements . 115
6.4 Physical downlink shared channel . 116
6.4.1 Physical downlink shared channel for BL/CE UEs . 118
6.4.2 Slot/subslot-based physical downlink shared channel . 121
6.5 Physical multicast channel . 123
6.6 Physical broadcast channel . 123
6.6.1 Scrambling . 123
6.6.2 Modulation . 123
6.6.3 Layer mapping and precoding . 124
6.6.4 Mapping to resource elements . 124
6.6.4.1 PBCH repetition in the cell acquisition subframe . 125
6.7 Physical control format indicator channel . 126
6.7.1 Scrambling . 126
6.7.2 Modulation . 126
6.7.3 Layer mapping and precoding . 127
6.7.4 Mapping to resource elements . 127
6.8 Physical downlink control channel . 127
6.8.1 PDCCH formats . 127
6.8.2 PDCCH multiplexing and scrambling . 127
6.8.3 Modulation . 128
6.8.4 Layer mapping and precoding . 128
6.8.5 Mapping to resource elements . 128
6.8A Enhanced physical downlink control channel . 129
6.8A.1 EPDCCH formats . 130
6.8A.2 Scrambling . 131
6.8A.3 Modulation . 131
6.8A.4 Laye
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