1、 ETSI TS 123 503 V15.2.0 (2018-07) 5G; Policy and Charging Control Framework for the 5G System; Stage 2 (3GPP TS 23.503 version 15.2.0 Release 15) TECHNICAL SPECIFICATION ETSI ETSI TS 123 503 V15.2.0 (2018-07)13GPP TS 23.503 version 15.2.0 Release 15Reference RTS/TSGS-0223503vf20 Keywords 5G ETSI 65
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13、te an endorsement by ETSI of products, services or organizations associated with those trademarks. Foreword This Technical Specification (TS) has been produced by ETSI 3rd Generation Partnership Project (3GPP). The present document may refer to technical specifications or reports using their 3GPP id
14、entities, UMTS identities or GSM identities. These should be interpreted as being references to the corresponding ETSI deliverables. The cross reference between GSM, UMTS, 3GPP and ETSI identities can be found under http:/webapp.etsi.org/key/queryform.asp. Modal verbs terminology In the present docu
15、ment “shall“, “shall not“, “should“, “should not“, “may“, “need not“, “will“, “will not“, “can“ and “cannot“ are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of provisions). “must“ and “must not“ are NOT allowed in ETSI deliverables except
16、when used in direct citation. ETSI ETSI TS 123 503 V15.2.0 (2018-07)33GPP TS 23.503 version 15.2.0 Release 15Contents Intellectual Property Rights 2g3Foreword . 2g3Modal verbs terminology 2g3Foreword . 6g3Introduction 6g31 Scope 7g32 References 7g33 Definitions and abbreviations . 8g33.1 Definitions
17、 8g33.2 Abbreviations . 8g34 High level architectural requirements 8g34.1 General requirements . 8g34.2 Non-session management related policy control requirements 9g34.2.1 Access and mobility related policy control requirements . 9g34.2.2 UE access selection and PDU Session selection related policy
18、(UE policy) control requirements 9g34.2.3 Network status analytics information requirements 9g34.2.4 Management of packet flow descriptions . 9g34.3 Session management related policy control requirements 10g34.3.1 General requirements 10g34.3.2 Charging related requirements 10g34.3.3 Policy control
19、requirements 10g34.3.3.1 Gating control requirements 10g34.3.3.2 QoS control requirements . 11g34.3.3.2.1 QoS control at service data flow level . 11g34.3.3.2.2 QoS control at QoS Flow level 11g34.3.3.2.3 QoS control at PDU Session level . 11g34.3.3.3 Subscriber spending limits requirements 11g34.3.
20、4 Usage monitoring control requirements 11g34.3.5 Application detection and control requirements . 12g34.3.6 Support for service capability exposure 12g34.3.7 Traffic steering control . 12g35 Architecture model and reference points 13g35.1 General . 13g35.2 Reference architecture 13g35.2.1 Non-roami
21、ng architecture . 13g35.2.2 Roaming architecture 14g35.2.3 Interworking with AFs supporting Rx interface . 16g35.3 Service-based interfaces and reference points 17g35.3.1 Interactions between PCF and AF 17g35.3.2 Interactions between PCF and SMF . 17g35.3.3 Interactions between PCF and AMF . 17g35.3
22、.4 Interactions between V-PCF and H-PCF 18g35.3.5 Interactions between PCF and UDR . 18g35.3.6 Interactions between SMF and CHF . 18g35.3.7 Void 18g35.3.8 Interactions between PCF and CHF 18g35.3.9 Interactions between SMF and NEF . 19g35.3.10 Interactions between NEF and PCF 19g35.3.11 Interactions
23、 between NWDAF and PCF . 19g36 Functional description 20g36.1 Overall description . 20g36.1.1 General 20g3ETSI ETSI TS 123 503 V15.2.0 (2018-07)43GPP TS 23.503 version 15.2.0 Release 156.1.1.1 PCF Discovery and Selection 20g36.1.1.2 Binding an AF request targeting an UE address to the relevant PCF 2
24、0g36.1.1.2.1 General 20g36.1.1.2.2 The Binding Support Function (BSF) 20g36.1.1.3 Policy decisions based on network analytics. 21g36.1.2 Non-session management related policy control 21g36.1.2.1 Access and mobility related policy control . 21g36.1.2.2 UE access selection and PDU Session selection re
25、lated policy (UE policy) control 22g36.1.2.2.1 General 22g36.1.2.2.2 Distribution of the policies to UE 23g36.1.2.3 Management of packet flow descriptions 24g36.1.2.3.1 PFD management 24g36.1.2.3.2 Packet Flow Description 25g36.1.2.4 Negotiation for future background data transfer . 26g36.1.2.5 Poli
26、cy Control Request Triggers relevant for AMF 27g36.1.3 Session management related policy control 27g36.1.3.1 General 27g36.1.3.2 Binding mechanism . 27g36.1.3.2.1 General 27g36.1.3.2.2 Session binding 28g36.1.3.2.3 PCC rule authorization 28g36.1.3.2.4 QoS Flow binding 28g36.1.3.3 Reporting . 29g36.1
27、.3.4 Credit management . 29g36.1.3.5 Policy Control Request Triggers relevant for SMF . 29g36.1.3.6 Policy control 34g36.1.3.7 Service (data flow) prioritization and conflict handling 35g36.1.3.8 Termination action 35g36.1.3.9 Handling of packet filters provided to the UE by SMF . 35g36.1.3.10 IMS e
28、mergency session support 35g36.1.3.11 Multimedia Priority Service support . 36g36.1.3.12 Redirection 37g36.1.3.13 Resource sharing for different AF sessions . 37g36.1.3.14 Traffic steering control 37g36.1.3.15 Resource reservation for services sharing priority 37g36.1.3.16 3GPP PS Data Off . 38g36.1
29、.3.17 Policy decisions based on spending limits 39g36.2 Network functions and entities . 40g36.2.1 Policy Control Function (PCF) . 40g36.2.1.1 General 40g36.2.1.2 Input for PCC decisions 41g36.2.1.3 Policy control subscription information management . 43g36.2.1.4 V-PCF . 45g36.2.1.5 H-PCF . 45g36.2.
30、1.6 Application specific policy information management. 45g36.2.2 Session Management Function (SMF) 46g36.2.2.1 General 46g36.2.2.2 Service data flow detection . 46g36.2.2.3 Measurement . 46g36.2.2.4 QoS control . 46g36.2.2.5 Application detection 46g36.2.2.6 Traffic steering 47g36.2.3 Application F
31、unction (AF) 47g36.2.4 Unified Data Repository (UDR) . 47g36.2.5 Charging Function (CHF) . 47g36.2.6 Void 47g36.2.7 Network Exposure Function (NEF) 48g36.2.8 Access and Mobility Management Function (AMF) 48g36.2.9 Network Data Analytics Function (NWDAF) 48g36.3 Policy and charging control rule . 48g
32、36.3.1 General 48g36.3.2 Policy and charging control rule operations . 54g3ETSI ETSI TS 123 503 V15.2.0 (2018-07)53GPP TS 23.503 version 15.2.0 Release 156.4 PDU Session related policy information 54g36.5 Access and mobility related policy information . 59g36.6 UE access selection and PDU Session se
33、lection related policy information 59g36.6.1 Access Network Discovery 2 presented to TSG for approval; 3 or greater indicates TSG approved document under change control. y the second digit is incremented for all changes of substance, i.e. technical enhancements, corrections, updates, etc. z the thir
34、d digit is incremented when editorial only changes have been incorporated in the document. Introduction For references to TS 23.203 4 made in this document, - the IP-CAN session of TS 23.203 4 maps to the PDU Session in 5GC. - the APN of TS 23.203 4 maps to DNN in 5GC. - the IP-CAN bearer of TS 23.2
35、03 4 maps to the QoS Flow in 5GC. - The PCRF of TS 23.203 4 maps to the PCF in 5GC. - The PCEF of TS 23.203 4 maps to the combination of SMF and UPF in 5GC. - The BBF shall be considered as being located in the PCEF. - TDF related description does not apply. - NBIFOM related description does not app
36、ly. ETSI ETSI TS 123 503 V15.2.0 (2018-07)73GPP TS 23.503 version 15.2.0 Release 151 Scope The present document defines the Stage 2 policy and charging control framework for the 5G System specified in TS 23.501 2 and TS 23.502 3. The policy and charging control framework encompasses the following hi
37、gh 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; -
38、 Management for UE access selection and PDU Session selection related policies. It refers to the policy and charging control functionality specified in TS 23.203 4 for policy and charging control for PDU Sessions, depicting the differences where those exist. Interworking with E-UTRAN connected to EP
39、C is described in TS 23.501 2. TS 23.502 3 contains the stage 2 procedures and flows for the policy and charging control framework and it is a companion specification to this specification. 2 References The following documents contain provisions which, through reference in this text, constitute prov
40、isions 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 refe
41、rence 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 3GPP TR 21.905: “Vocabulary for 3GPP Specifications“. 2 3GPP TS 23.501: “Technical Specification Group Services and Sy
42、stem Aspects; System Architecture for the 5G System“. 3 3GPP TS 23.502: “Procedures for the 5G System; Stage 2“. 4 3GPP TS 23.203: “Policies and Charging control architecture; Stage 2“. 5 3GPP TS 23.228: “IP Multimedia Subsystem (IMS); Stage 2“. 6 3GPP TS 23.179: “Functional architecture and informa
43、tion flows to support mission-critical communication service; Stage 2“. 7 3GPP TS 23.335: “User Data Convergence (UDC); Technical realization and information flows; Stage 2“. 8 3GPP TS 32.240: “Charging management; Charging architecture and principles“. 9 3GPP TS 23.402: “Architecture enhancements f
44、or non-3GPP accesses“. 10 3GPP TS 23.161: “Network-Based IP Flow Mobility (NBIFOM); Stage 2“. 11 3GPP TS 23.261: “IP flow mobility and seamless Wireless Local Area Network (WLAN) offload; Stage 2“. ETSI ETSI TS 123 503 V15.2.0 (2018-07)83GPP TS 23.503 version 15.2.0 Release 1512 3GPP TS 23.167: “3rd
45、 Generation Partnership Project; Technical Specification Group Services and Systems Aspects; IP Multimedia Subsystem (IMS) emergency sessions“. 13 3GPP TS 29.507: “Access and Mobility Policy Control Service; Stage 3“. 14 3GPP TS 24.501: “Non-Access-Stratum (NAS) protocol for 5G System (5GS); Stage 3
46、“. 15 3GPP TS 22.011: “Service Accessibility“. 16 3GPP TS 23.221: “Architectural requirements“. 17 3GPP TS 29.551: “5G System; Packet Flow Description Management Service; Stage 3“. 3 Definitions and abbreviations 3.1 Definitions For the purposes of the present document, the terms and definitions giv
47、en in TR 21.905 1, TS 23.501 2, TS 23.502 3, TS 23.203 4 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 1. Non-3GPP access network selection information: It consists of ePDG identifier configuration, N3IWF i
48、dentification and non-3GPP access node selection information, as defined in clause 6.3.6.1 in TS 23.501 2. Policy Section: A Policy Section is identified by a Policy Section Identifier and consists of one or multiple URSP rule(s) or one or multiple WLANSP rule(s) or non-3GPP access network selection
49、 information or a combination of the above. User Preferences: The list of configuration parameters provided by the layer (e.g. application) over NAS and used by the UE for access network and discovery selection and PDU Session selection. 3.2 Abbreviations For the purposes of the present document, the abbreviations given in TR 21.905 1, TS 23.501 2, TS 23.502 3, TS 23.203 4 and the following apply. An abbreviation defined in the present document takes precedence over the definition of the same abbreviat
