Content for TR 23.700-81 Word version: 18.0.0

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1 Scope p. 13

This study focuses on key issue description, solution and evaluation/conclusion on further enhancement for network automation, as documented in TS 23.288, by covering the following objectives:

Study possible mechanisms for improved correctness of NWDAF analytics;
Investigate whether and how NWDAF can assist application detection;
Investigate whether and how to support data and analytics exchange in roaming case;
Investigate data collection and data storage enhancements (including DCCF and ADRF enhancements, e.g. DCCF relocation, ADRF selection, ML model storage);
Study whether and how to enhance trained ML Model sharing for different vendors;
Study whether and how interactions between NWDAF can leverage MDAS/MDAF functionality for data collection and analytics;
Investigate NWDAF-assisted URSP;
Study whether and how to enhance the QoS sustainability analytics with finer granularity and additional input data;
Study whether and how to enhance architecture to support federated learning in the 5GC; and
Study NWDAF enhancements considering the finer granularity of location information than TA and cell level.

2 References p. 13

The following documents contain provisions which, through reference in this text, constitute provisions of the present document.

References are either specific (identified by date of publication, edition number, version number, etc.) or non-specific.
For a specific reference, subsequent revisions do not apply.
For a non-specific reference, the latest version applies. In the case of a reference to a 3GPP document (including a GSM document), a non-specific reference implicitly refers to the latest version of that document in the same Release as the present document.

[1]

TR 21.905: "Vocabulary for 3GPP Specifications".

[2]

TS 23.501: "System Architecture for the 5G System; Stage 2".

[3]

TS 23.502: "Procedures for the 5G system, Stage 2".

[4]

TS 23.503: "Policy and Charging Control Framework for the 5G System".

[5]

TS 23.288: "Architecture enhancements for 5G System (5GS) to support network data analytics services".

[6]

TS 22.071: "Location Services (LCS); Service description; Stage 1".

[7]

TS 28.552: "Management and orchestration; 5G performance measurements".

[8]

ITU-T Y.1540: "Internet protocol data communication service - IP packet transfer and availability performance parameters".

[9]

TS 28.554: "5G end to end Key Performance Indicators (KPI)".

[10]

TS 23.003: "Numbering, addressing and identification".

[11]

TS 29.510: "5G System; Network Function Repository Services; Stage 3".

[12]

TS 33.501: "Security architecture and procedures for 5G System".

[13]

TS 23.273: "5G System (5GS) Location Services (LCS)".

[14]

TS 23.032: "Universal Geographical Area Description (GAD)".

[15]

TS 28.104: "Management and orchestration; Management Data Analytics (MDA)".

[16]

TS 38.314: "NR; Layer 2 Measurements".

[17]

TS 29.508: "5G System; Session Management Event Exposure Service; Stage 3".

[18]

TS 29.572: "5G System; Location Management Services; Stage 3".

[19]

TS 23.008: "Organization of subscriber data".

[20]

TS 37.320: "Radio measurement collection for Minimization of Drive Tests (MDT); Overall description; Stage 2".

[21]

TS 38.331: "NR; Radio Resource Control (RRC); Protocol specification".

[22]

TS 32.422: "Telecommunication management; Subscriber and equipment trace; Trace control and configuration management".

[23]

TS 32.423: "Telecommunication management; Subscriber and equipment trace; Trace data definition and management".

[24]

TS 28.405: "Telecommunication management; Quality of Experience (QoE) measurement collection; Control and configuration".

[25]

TS 28.406: "Telecommunication management; Quality of Experience (QoE) measurement collection; Information definition and transport".

[26]

TS 28.532: " Management and orchestration; Generic management services".

[27]

TS 28.533: "Management and orchestration; Architecture framework".

[28]

TS 28.537: "Management and orchestration; Management capabilities".

[29]

TS 28.541: "Management and orchestration; 5G Network Resource Model (NRM); Stage 2 and stage 3".

[30]

TR 23.700-71: "Study on enhancement to the 5GC LoCation Services (LCS); Phase 3".

3 Definitions of terms and abbreviations p. 14

3.1 Terms p. 14

For the purposes of the present document, the terms given in TR 21.905, TS 23.501 and TS 23.503 and the following apply. A term defined in the present document takes precedence over the definition of the same term, if any, in TR 21.905, TS 23.501 and TS 23.503.

3.2 Abbreviations p. 14

For the purposes of the present document, the abbreviations given in TR 21.905, TS 23.501 and TS 23.503 and the following apply. An abbreviation defined in the present document takes precedence over the definition of the same abbreviation, if any, in TR 21.905, TS 23.501 and TS 23.503.

4 Architectural Assumptions and Principles p. 15

The architecture for the present study shall be based on the existing NWDAF framework as specified in TS 23.288, TS 23.501, TS 23.502 and TS 23.503.

Solutions shall comply with the 5G System architectural principles in TS 23.501, and network data analytics principles in TS 23.288.

In addition, the following architectural assumptions are followed:

In terms of user data privacy and security improvement, the cooperation with SA WG3 is needed;
For how to collect user plane data, the cooperation with FS_UPEAS is needed.