5G-NR 38.211协议 物理层的信道与调制

3.3 Abbreviations.........................................................................................................................................................9

4.1 General...................................................................................................................................................................9

4.2 Numerologies.........................................................................................................................................................9

4.3 Frame structure.....................................................................................................................................................10

4.3.1 Frames and subframes...............................................................................................................................................10

4.3.2 Slots 10

4.4 Physical resources................................................................................................................................................11

4.4.1 Antenna ports.............................................................................................................................................................11

4.4.2 Resource grid.............................................................................................................................................................11

4.4.4.5 Virtual resource blocks...........................................................................................................................................13

4.4.5 Bandwidth part...........................................................................................................................................................13

4.5 Carrier aggregation...............................................................................................................................................13

5.1 Modulation mapper..............................................................................................................................................13

5.1.1 π/2-BPSK...................................................................................................................................................................13

5.1.2 BPSK 13

5.1.3 QPSK 14

5.1.4 16QAM14

5.1.5 64QAM14

5.3 OFDM baseband signal generation......................................................................................................................20

5.3.1 OFDM baseband signal generation for all channels except PRACH........................................................................20

5.3.2 OFDM baseband signal generation for PRACH.......................................................................................................20

5.4 Modulation and upconversion..............................................................................................................................22

6.1 Overview..............................................................................................................................................................22

6.1.1 Overview of physical channels..................................................................................................................................22

6.1.2 Overview of physical signals.....................................................................................................................................23

6.2 Physical resources................................................................................................................................................23

6.3 Physical channels.................................................................................................................................................23

6.3.1.6 Mapping to virtual resource blocks........................................................................................................................29

6.3.1.7 Mapping from virtual to physical resource blocks.................................................................................................29

6.3.2 Physical uplink control channel.................................................................................................................................29

6.3.2.1 General 29

6.3.2.2 Sequence and cyclic shift hopping.........................................................................................................................30

6.3.2.2.1 Group and sequence hopping...............................................................................................................................30

6.3.2.2.2 Cyclic shift hopping.............................................................................................................................................31

6.3.2.3 PUCCH format 0....................................................................................................................................................31

6.3.2.3.1 Sequence generation............................................................................................................................................31

6.3.2.3.2 Mapping to physical resources............................................................................................................................31

6.3.2.5.3 Mapping to physical resources............................................................................................................................34

6.3.2.6 PUCCH formats 3 and 4.........................................................................................................................................34

6.3.2.6.1 Scrambling 34

6.3.2.6.2 Modulation34

6.3.2.6.3 Block-wise spreading...........................................................................................................................................34

6.3.2.6.4 Transform precoding...........................................................................................................................................35

6.3.2.6.5 Mapping to physical resources............................................................................................................................35

6.3.3 Physical random-access channel................................................................................................................................36

6.3.3.1 Sequence generation...............................................................................................................................................36

6.3.3.2 Mapping to physical resources...............................................................................................................................41

6.4.1.2 Phase-tracking reference signals for PUSCH.........................................................................................................65

6.4.1.2.1 Sequence generation............................................................................................................................................65

6.4.1.2.1.1 Sequence generation if transform precoding is not enabled.............................................................................65

6.4.1.2.1.2 Sequence generation if transform precoding is enabled...................................................................................65

6.4.1.2.2 Mapping to physical resources............................................................................................................................66

6.4.1.2.2.1 Precoding and mapping to physical resources if transform precoding is not enabled......................................66

6.4.1.2.2.2 Mapping to physical resources if transform precoding is enabled...................................................................67

6.4.1.3 Demodulation reference signal for PUCCH...........................................................................................................69

6.4.1.3.1 Demodulation reference signal for PUCCH format 1.........................................................................................69

6.4.1.3.1.1 Sequence generation.........................................................................................................................................69

6.4.1.3.3.2 Mapping to physical resources.........................................................................................................................71

6.4.1.4 Sounding reference signal.......................................................................................................................................72

6.4.1.4.1 SRS resource........................................................................................................................................................72

6.4.1.4.2 Sequence generation............................................................................................................................................72

6.4.1.4.3 Mapping to physical resources............................................................................................................................73

6.4.1.4.4 Sounding reference signal slot configuration......................................................................................................78

7.1 Overview..............................................................................................................................................................78

7.1.1 Overview of physical channels..................................................................................................................................78

7.1.2 Overview of physical signals.....................................................................................................................................78

7.3.1.1 Scrambling..............................................................................................................................................................79

7.3.1.2 Modulation..............................................................................................................................................................79

7.3.1.3 Layer mapping........................................................................................................................................................79

7.3.1.4 Antenna port mapping............................................................................................................................................80

7.3.1.5 Mapping to virtual resource blocks........................................................................................................................81

7.3.1.6 Mapping from virtual to physical resource blocks.................................................................................................81

7.3.2 Physical downlink control channel (PDCCH)...........................................................................................................83

7.3.2.1 Control-channel element (CCE).............................................................................................................................83

7.3.2.2 Control-resource set (CORESET)..........................................................................................................................83

7.3.2.3 Scrambling..............................................................................................................................................................84

7.4 Physical signals....................................................................................................................................................85

7.4.1 Reference signals.......................................................................................................................................................85

7.4.1.1 Demodulation reference signals for PDSCH..........................................................................................................85

7.4.1.1.1 Sequence generation............................................................................................................................................85

7.4.1.1.2 Mapping to physical resources............................................................................................................................86

7.4.1.2 Phase-tracking reference signals for PDSCH.........................................................................................................90

7.4.1.2.1 Sequence generation............................................................................................................................................90

7.4.1.2.2 Mapping to physical resources............................................................................................................................90

7.4.1.3 Demodulation reference signals for PDCCH.........................................................................................................92

7.4.1.3.1 Sequence generation............................................................................................................................................92

7.4.1.5.2 Sequence generation............................................................................................................................................93

7.4.1.5.3 Mapping to physical resources............................................................................................................................94

7.4.2 Synchronization signals.............................................................................................................................................97

7.4.2.1 Physical-layer cell identities...................................................................................................................................97

7.4.2.2 Primary synchronization signal..............................................................................................................................97

7.4.2.2.1 Sequence generation............................................................................................................................................97

7.4.2.2.2 Mapping to physical resources............................................................................................................................98

7.4.2.3 Secondary synchronization signal..........................................................................................................................98

7.4.2.3.1 Sequence generation............................................................................................................................................98

7.4.2.3.2 Mapping to physical resources............................................................................................................................98