5G System; Network Data Analytics signalling flows; Stage 3
The present document specifies detailed call flows of Network Data Analytics and the related data collection over the Nnwdaf, Nsmf, Nnsacf, Namf, Nnrf, Nnssf, Nnef, Naf, Ndccf, Nadrf, Nmfaf, Nudm, Nupf, Ngmlc, Npcf, and Nlmf service-based interfaces and/or from OAM, and their relationship with the flow level signalling in 5G system.
NOTE 1: The call flows depicted in this Technical Specification do not cover all traffic cases.
NOTE 2: There is no data collected from the PCF by the NWDAF defined in this Release of the specification.
The stage 2 definition and procedures of Network Data Analytics are contained in 3GPP TS 23.288 [2] and 3GPP TS 23.502 [3]. The 5G System Architecture is defined in 3GPP TS 23.501 [4].
Detailed definitions of the involved services are provided in 3GPP TS 29.520 [5], 3GPP TS 29.508 [6], 3GPP TS 29.554 [8], 3GPP TS 29.522 [10], 3GPP TS 29.591 [11], 3GPP TS 29.517 [12], 3GPP TS 29.551 [39], 3GPP TS 29.574 [15], 3GPP TS 29.575 [16], 3GPP TS 29.576 [17], 3GPP TS 29.503 [22], 3GPP TS 29.510 [23], 3GPP TS 29.507 [24], 3GPP TS 29.512 [25], 3GPP TS 29.564 [40], 3GPP TS 29.515 [41], 3GPP TS 29.572 [47], 3GPP TS 29.523 [51], and 3GPP TS 29.244 [45] for NF service-based interfaces, 3GPP TS 28.552 [27], 3GPP TS 28.532 [19], 3GPP TS 28.533 [28], 3GPP TS 28.550 [31] , 3GPP TS 28.554 [30], 3GPP TS 36.331 [34], 3GPP TS 37.320 [29], 3GPP TS 38.331 [33] and 3GPP TS 38.215 [35] for data collection from OAM.
The Technical Realization of the Service Based Architecture and the Principles and Guidelines for Services Definition of the 5G System are specified in 3GPP TS 29.500 [13] and 3GPP TS 29.501 [14].