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Content for  TS 29.552  Word version:  18.3.0

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4 Reference Architecture for Data Analytics  4.1 General  4.2 Data Collection  4.3 Analytics Exposure  4.4 Data Storage and Retrieval  4.5 Roaming architecture for data collection and analytics exposure  5 Signalling Flows for the Network Data Analytics Framework  5.1 General  5.2 Analytics Exposure Procedures  5.3 Analytics Aggregation from Multiple NWDAFs  5.4 Procedures for Analytics Transferring  5.5 Data Collection  5.6 ML Model provisioning procedures  5.6A ML Model Training procedures  5.7 Procedures for Specific Network Data Analytics  5.8 Procedures for NWDAF Discovery and Selection  5.9 Analytics Data Repository procedures  5.10 Federated Learning among Multiple NWDAFs  $ Change history 

 

4  Reference Architecture for Data Analytics  p. 9

4.1  General  p. 9

4.2  Data Collection  p. 10

4.3  Analytics Exposure  p. 11

4.4  Data Storage and Retrieval  p. 12

4.5  Roaming architecture for data collection and analytics exposure |R18|  p. 12

5  Signalling Flows for the Network Data Analytics Framework  p. 12

5.1  General  p. 12

5.2  Analytics Exposure Procedures  p. 13

5.2.1  General  p. 13

5.2.2  Network data analytics Subscribe/Unsubscribe/Notify  p. 13

5.2.2.1  Analytics Subscribe/Unsubscribe/Notify initiated by 5GC NFs, OAM or AFs  p. 13

5.2.2.2  Analytics Subscribe/Unsubscribe/Notify initiated by AFs via the NEF  p. 14

5.2.3  Network data analytics information request  p. 15

5.2.3.1  Analytics information request initiated by 5GC NFs, OAM or AFs  p. 15

5.2.3.2  Analytics information request initiated by AFs via the NEF  p. 16

5.2.4  Analytics Exposure via DCCF  p. 16

5.2.5  Analytics Exposure via DCCF and MFAF  p. 20

5.2.6  Procedure for Analytics Exposure in Roaming Case |R18|  p. 25

5.2.6.1  Analytics Exposure from HPLMN to VPLMN for inbound roaming users  p. 25

5.2.6.2  Analytics Exposure from VPLMN to HPLMN for outbound roaming users  p. 26

5.3  Analytics Aggregation from Multiple NWDAFs  p. 28

5.3.1  General  p. 28

5.3.2  Analytics aggregation with provisioning of Area of Interest  p. 28

5.3.3  Analytics aggregation without provisioning of Area of Interest  p. 30

5.4  Procedures for Analytics Transferring  p. 31

5.4.1  Analytics context transfer initiated by target NWDAF selected by the NWDAF service consumer  p. 31

5.4.2  Analytics Subscription Transfer initiated by source NWDAF  p. 33

5.4.3  Prepared analytics subscription transfer  p. 36

5.5  Data Collection  p. 38

5.5.1  Procedure for Data Collection from NFs  p. 38

5.5.1.1  Data Collection from NFs  p. 38

5.5.2  Data collection profile registration  p. 39

5.5.3  Procedure for Data Collection using DCCF  p. 41

5.5.3.1  Data Collection via DCCF  p. 41

5.5.3.2  Data Collection via Messaging Framework  p. 46

5.5.4  Procedure for Data Collection in Roaming Case |R18|  p. 51

5.5.4.1  Data Collection by H-RE-NWDAF from V-RE-NWDAF for outbound roaming users  p. 51

5.5.4.2  Data Collection by V-RE-NWDAF from H-RE-NWDAF for inbound roaming users  p. 53

5.6  ML Model provisioning procedures  p. 54

5.6.1  General  p. 54

5.6.2  ML Model Subscribe/Unsubscribe/Notify procedure  p. 54

5.6A  ML Model Training procedures |R18|  p. 55

5.6A.1  General  p. 55

5.6A.2  ML Model Training Subscribe/Unsubscribe/Notify procedure  p. 55

5.7  Procedures for Specific Network Data Analytics  p. 56

5.7.1  General  p. 56

5.7.2  Network Slice (Instance) load level Analytics  p. 56

5.7.3  Observed Service Experience Analytics  p. 59

5.7.4  NF load Analytics  p. 62

5.7.5  Network Performance Analytics  p. 65

5.7.6  UE Mobility Analytics  p. 67

5.7.7  UE Communication Analytics  p. 70

5.7.8  Expected UE behavioural Analytics  p. 73

5.7.9  Abnormal UE behavioural Analytics  p. 75

5.7.10  User Data Congestion Analytics  p. 76

5.7.11  QoS Sustainability Analytics  p. 79

5.7.12  Dispersion Analytics  p. 80

5.7.13  WLAN Performance Analytics  p. 83

5.7.14  Session Management Congestion Control Experience Analytics  p. 85

5.7.15  Redundant Transmission Experience Analytics  p. 86

5.7.16  DN Performance Analytics  p. 89

5.7.17  PFD Determination Analytics |R18|  p. 91

5.7.18  E2E data volume transfer time analytics |R18|  p. 93

5.7.19  PDU Session Traffic Analytics |R18|  p. 96

5.7.20  Relative Proximity Analytics |R18|  p. 97

5.7.21  Movement Behaviour Analytics |R18|  p. 100

5.8  Procedures for NWDAF Discovery and Selection  p. 101

5.8.1  General  p. 101

5.8.2  Procedures related to NRF  p. 101

5.8.2.1  General  p. 101

5.8.2.2  NWDAF (De-)Registration in NRF  p. 101

5.8.2.3  Consumer discovery and selection of NWDAF in NRF  p. 101

5.8.3  Procedures related to UDM  p. 102

5.8.3.1  General  p. 102

5.8.3.2  NWDAF containing AnLF Registration/Deregistration in UDM  p. 102

5.8.3.2.1  NWDAF containing AnLF Registration in UDM  p. 102
5.8.3.2.2  NWDAF containing AnLF Update of Registration in UDM  p. 102
5.8.3.2.3  NWDAF containing AnLF De-Registration in UDM  p. 103

5.8.3.3  Consumer discovery and selection of NWDAF containing AnLF in UDM  p. 104

5.8.4  Procedures for PCF learning NWDAF IDs for served UEs  p. 104

5.9  Analytics Data Repository procedures  p. 105

5.9.1  General  p. 105

5.9.2  Historical Data and Analytics Storage/Retrieval/Deletion procedure  p. 105

5.9.3  Historical Data and Analytics Storage via Notifications  p. 107

5.10  Federated Learning among Multiple NWDAFs |R18|  p. 109

5.10.1  General  p. 109

5.10.2  Procedures related to Federated Learning  p. 109

5.10.2.1  General Procedure for Federated Learning among Multiple NWDAF Instances  p. 109

5.10.2.2  Preparation Procedure for Federated Learning  p. 113

5.10.2.3  Procedure for Maintenance of Federated Learning Process  p. 113

$  Change history  p. 116

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