Technical Specification Group Radio Access Network NR NR and NGRAN Overall Description文档格式.docx

Technical Specification Group Radio Access Network NR NR and NGRAN Overall Description文档格式.docx

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Contents

Foreword7

1Scope8

2References8

3AbbreviationsandDefinitions9

3.1Abbreviations9

3.2Definitions9

4OverallArchitectureandFunctionalSplit10

4.1OverallArchitecture10

4.2FunctionalSplit11

4.3NetworkInterfaces13

4.3.1NGInterface13

4.3.1.1NGUserPlane13

4.3.1.2NGControlPlane13

4.3.2XnInterface14

4.3.2.1XnUserPlane14

4.3.2.2XnControlPlane14

4.4RadioProtocolArchitecture15

4.4.1UserPlane15

4.4.2ControlPlane15

4.5Multi-RATDualConnectivity16

5PhysicalLayer16

5.1Waveform,numerologyandframestructure16

5.2Downlink17

5.2.1Downlinktransmissionscheme17

5.2.2Physical-layerprocessingforphysicaldownlinksharedchannel17

5.2.3Physicaldownlinkcontrolchannels18

5.2.4SynchronizationsignalandPBCH18

5.2.5Physicallayerprocedures19

5.2.5.1Linkadaptation19

5.2.5.2PowerControl19

5.2.5.3Cellsearch19

5.2.5.4HARQ19

5.3Uplink19

5.3.1Uplinktransmissionscheme19

5.3.2Physical-layerprocessingforphysicaluplinksharedchannel19

5.3.3Physicaluplinkcontrolchannel20

5.3.4Randomaccess21

5.3.5Physicallayerprocedures21

5.3.5.1Linkadaptation21

5.3.5.2UplinkPowercontrol21

5.3.5.3Uplinktimingcontrol21

5.3.5.4HARQ21

5.4Carrieraggregation21

5.4.1Carrieraggregation21

5.4.2SupplementalUplink22

5.5TransportChannels22

6Layer223

6.1Overview23

6.2MACSublayer24

6.2.1ServicesandFunctions24

6.2.2LogicalChannels25

6.2.3MappingtoTransportChannels25

6.2.4HARQ25

6.3RLCSublayer25

6.3.1TransmissionModes25

6.3.2ServicesandFunctions26

6.3.3ARQ26

6.4PDCPSublayer26

6.4.1ServicesandFunctions26

6.5SDAPSublayer27

6.6L2DataFlow27

6.7CarrierAggregation27

6.8DualConnectivity29

6.9SupplementaryUplink29

6.10BandwidthAdaptation29

7RRC30

7.1ServicesandFunctions30

7.2ProtocolStates31

7.3SystemInformationHandling31

7.4AccessControl32

7.5UECapabilityRetrievalframework32

7.6TransportofNASMessages33

7.7CarrierAggregation33

7.8BandwidthAdaptation33

8NGIdentities33

8.1UEIdentities33

8.2NetworkIdentities33

9MobilityandStateTransitions34

9.1Overview34

9.2Intra-NR34

9.2.1MobilityinRRC_IDLE34

9.2.1.1CellSelection34

9.2.1.2CellReselection35

9.2.2MobilityinRRC_INACTIVE35

9.2.2.1Overview35

9.2.2.2CellReselection36

9.2.2.3RAN-BasedNotificationArea36

9.2.2.4StateTransitions37

9.2.2.4.1UEtriggeredtransitionfromRRC_INACTIVEtoRRC_CONNECTED37

9.2.2.4.2NetworktriggeredtransitionfromRRC_INACTIVEtoRRC_CONNECTED37

9.2.2.5RNAupdate38

9.2.3MobilityinRRC_CONNECTED38

9.2.3.1Overview38

9.2.3.2Handover39

9.2.3.2.1C-PlaneHandling39

9.2.3.2.2U-PlaneHandling41

9.2.4Measurements41

9.2.5Paging43

9.2.6RandomAccessProcedure43

9.2.7RadioLinkFailure44

9.3InterRAT44

9.3.1Intra5GC44

9.3.1.1CellReselection44

9.3.1.2Handover45

9.3.1.3Measurements45

9.3.2From5GCtoEPC45

9.3.2.1CellReselection45

9.3.2.2Handover45

9.3.2.3Measurements45

9.3.2.4DataForwarding45

9.4RoamingandAccessRestrictions46

10Scheduling46

10.1BasicSchedulerOperation46