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TS 23.503SA2
PCC Framework for the 5G System

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V16.4.1 (Wzip)2020/03  115 p.
V15.8.0 (PDF)  2019/12  85 p.

WI Acronym:  5GS_Ph1
Rapporteur:  Mr. Schramm, MirkoHuawei Technologies Co. Ltd.

The present document defines the Stage 2 Policy and Charging Control (PCC) framework for the 5G System. The PCC framework encompasses the following high level functions:
  • Flow Based Charging for network usage, including charging control and online credit control, for service data flows;
  • Policy control for session management and service data flows (e.g. gating control, QoS control, etc.);
  • Management for access and mobility related policies;
  • Management for UE access selection and PDU Session selection related policies.

essential Table of Contents for  TS 23.503  Word version:   16.4.1

each title links to the equivalent title in the full Contents
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0  IntroductionWord-p. 6
1  ScopeWord-p. 7
2  ReferencesWord-p. 7
3  Definitions and abbreviationsWord-p. 8
4  High level architectural requirementsWord-p. 11
4.1  General requirementsWord-p. 11
4.2  Non-session management related policy control requirementsWord-p. 11
4.3  Session management related policy control requirementsWord-p. 13
5  Architecture model and reference pointsWord-p. 17
5.1  GeneralWord-p. 17
5.2  Reference architectureWord-p. 17
5.3  Service-based interfaces and reference pointsWord-p. 21
6  Functional descriptionWord-p. 24
6.1  Overall descriptionWord-p. 24
6.1.1  GeneralWord-p. 24  PCF Discovery and SelectionWord-p. 24  Binding an AF request targeting an UE address to the relevant PCFWord-p. 24  Policy decisions based on network analyticsWord-p. 26
6.1.2  Non-session management related policy controlWord-p. 26  Access and mobility related policy controlWord-p. 26  UE access selection and PDU Session selection related policy (UE policy) controlWord-p. 27  Management of packet flow descriptionsWord-p. 31  Negotiation for future background data transferWord-p. 33  Policy Control Request Triggers relevant for AMFWord-p. 35
6.1.3  Session management related policy controlWord-p. 36  GeneralWord-p. 36  Binding mechanismWord-p. 37  ReportingWord-p. 39  Credit managementWord-p. 39  Policy Control Request Triggers relevant for SMFWord-p. 40  Policy controlWord-p. 47  Service (data flow) prioritization and conflict handlingWord-p. 47  Termination actionWord-p. 48  Handling of packet filters provided to the UE by SMFWord-p. 48  IMS emergency session supportWord-p. 48  Multimedia Priority Service supportWord-p. 49  RedirectionWord-p. 50  Resource sharing for different AF sessionsWord-p. 50  Traffic steering controlWord-p. 51  Resource reservation for services sharing priorityWord-p. 51  3GPP PS Data OffWord-p. 52  Policy decisions based on spending limitsWord-p. 53  Event reporting from the PCFWord-p. 54  Mission Critical Services supportWord-p. 56  Access Traffic Steering, Switching and Splitting [R16]Word-p. 57  QoS Monitoring to assist URLLC Service [R16]Word-p. 57  AF session with required QoS [R16]Word-p. 58  Support of integration with Time Sensitive Networking [R16]Word-p. 59
6.2  Network functions and entitiesWord-p. 59
6.2.1  Policy Control Function (PCF)Word-p. 59  GeneralWord-p. 59  Input for PCC decisionsWord-p. 61  Policy control subscription information managementWord-p. 65  V-PCFWord-p. 67  H-PCFWord-p. 67  Application specific policy information managementWord-p. 68
6.2.2  Session Management Function (SMF)Word-p. 68  GeneralWord-p. 68  Service data flow detectionWord-p. 70  MeasurementWord-p. 70  QoS controlWord-p. 72  Application detectionWord-p. 72  Traffic steeringWord-p. 73  Access Traffic Steering, Switching and Splitting [R16]Word-p. 73
6.2.3  Application Function (AF)Word-p. 73
6.2.4  Unified Data Repository (UDR)Word-p. 74
6.2.5  Charging Function (CHF)Word-p. 74
6.2.7  Network Exposure Function (NEF)Word-p. 74
6.2.8  Access and Mobility Management Function (AMF)Word-p. 74
6.2.9  Network Data Analytics Function (NWDAF)Word-p. 74
6.3  Policy and charging control ruleWord-p. 75
6.3.1  GeneralWord-p. 75
6.3.2  Policy and charging control rule operationsWord-p. 86
6.4  PDU Session related policy informationWord-p. 87
6.5  Access and mobility related policy informationWord-p. 94
6.6  UE access selection and PDU Session selection related policy informationWord-p. 95
6.6.1  Access Network Discovery & Selection Policy InformationWord-p. 95  GeneralWord-p. 95  UE selecting a WLANSP ruleWord-p. 95  UE procedure for selecting a WLAN access based on WLANSP rulesWord-p. 96
6.6.2  UE Route Selection Policy informationWord-p. 96  Structure DescriptionWord-p. 96  Configuration and Provision of URSPWord-p. 100  UE procedure for associating applications to PDU Sessions based on URSPWord-p. 100
A  URSP rules exampleWord-p. 102
B  Deployment option to support of BSF and DRA coexistence due to network migrationWord-p. 106
C (Normative)  Support for Application Functions supporting Rx interface [R16]Word-p. 107
D  PCC usage for sponsored data connectivity [R16]Word-p. 109
E  Change historyWord-p. 111

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