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Content for  TS 29.514  Word version:  16.7.0

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1  ScopeWord‑p. 10
The present specification provides the stage 3 definition of the Policy Authorization Service of the 5G System.
The 5G System Architecture is defined in TS 23.501. The stage 2 definition and related procedures for the Npcf Policy Authorization Service are specified in TS 23.502 and TS 23.503.
The 5G System stage 3 call flows are provided in TS 29.513.
The Technical Realization of the Service Based Architecture and the Principles and Guidelines for Services Definition are specified in TS 29.500 and TS 29.501.
The Policy Authorization Service is provided by the Policy Control Function (PCF). This service creates policies as requested by the authorised AF for the PDU Session to which the AF session is bound.
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2  References

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; Stage 2".
[5]
TS 29.500: "5G System; Technical Realization of Service Based Architecture; Stage 3".
[6]
TS 29.501: "5G System; Principles and Guidelines for Services Definition; Stage 3".
[7]
TS 29.513: "5G System; Policy and Charging Control signalling flows and QoS parameter mapping; Stage 3".
[8]
TS 29.512: "5G System; Session Management Policy Control Service; Stage 3".
[9]
RFC 7540:  "Hypertext Transfer Protocol Version 2 (HTTP/2)".
[10]
RFC 8259:  "The JavaScript Object Notation (JSON) Data Interchange Format".
[11]
OpenAPI: "OpenAPI 3.0.0 Specification", https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.0.md.
[12]
TS 29.571: "5G System; Common Data Types for Service Based Interfaces; Stage 3".
[13]
TS 29.508: "5G System; Session Management Event Exposure Service; Stage 3".
[14]
TS 29.554: "5G System; Background Data Transfer Policy Control Service; Stage 3".
[15]
TS 29.122: "T8 reference point for Northbound APIs".
[16]
IEEE 802.3-2015: "IEEE Standard for Ethernet".
[17]
IEEE 802.1Q-2014: "Bridges and Bridged Networks".
[18]
RFC 7042:  "IANA Considerations and IETF Protocol and Documentation Usage for IEEE 802 Parameters".
[19]
RFC 3986:  "Uniform Resource Identifier (URI): Generic Syntax".
[20]
TS 29.214: "Policy and Charging Control over Rx reference point".
[21]
RFC 7396:  "JSON Merge Patch".
[22]
TS 32.291: "5G System; Charging service; Stage 3".
[23]
TS 22.153: "5G System; "Multimedia Priority Service".
[24]
RFC 7807:  "Problem Details for HTTP APIs".
[25]
TS 33.501: "Security architecture and procedures for 5G system".
[26]
RFC 6749:  "The OAuth 2.0 Authorization Framework".
[27]
TS 29.510: "5G System; Network Function Repository Services; Stage 3".
[28]
TR 21.900: "Technical Specification Group working methods".
[29]
TS 24.292: "IP Multimedia (IM) Core Network (CN) subsystem Centralized Services (ICS); Stage 3".
[30]
TS 26.114: "IP Multimedia Subsystem (IMS); Multimedia telephony; Media handling and interaction".
[31]
RFC 5761:  "Multiplexing RTP Data and Control Packets on a Single Port".
[32]
TS 24.229: "IP Multimedia Call Control Protocol based on SIP and SDP; Stage 3".
[33]
TS 23.228: "IP Multimedia Subsystem (IMS); Stage 2".
[34]
RFC 5031:  "A Uniform Resource Name (URN) for Emergency and Other Well-Known Services".
[35]
RFC 5009:  "Private Header (P-Header) Extension to the Session Initiation Protocol (SIP) for Authorization of Early Media".
[36]
TS 24.008: "Mobile radio interface Layer 3 specification; Core network protocols; Stage 3".
[37]
RFC 3556:  "Session Description Protocol (SDP) Bandwidth Modifiers for RTP Control Protocol (RTCP) Bandwidth".
[38]
RFC 3959  (December 2004): "The Early Session Disposition Type for the Session Initiation Protocol (SIP)".
[39]
TS 23.380: "IMS Restoration Procedures".
[40]
TS 23.167: "IP Multimedia Subsystem (IMS) emergency sessions".
[41]
TS 24.379: "Mission Critical Push To Talk (MCPTT) call control; Protocol specification".
[42]
RFC 8101:  "IANA Registration of New Session Initiation Protocol (SIP), Resource-Priority Namespace for Mission Critical Push To Talk Service".
[43]
TS 24.281: "Mission Critical Video (MCVideo) signalling control; Protocol specification".
[44]
TS 23.316: "Wireless and wireline convergence access support for the 5G System (5GS)".
[45]
TS 22.179: "Mission Critical Push to Talk (MCPTT) over LTE; Stage 1".
[46]
TS 22.280: "Mission Critical (MC) services common requirements".
[47]
TS 22.281: "Mission Critical (MC) video over LTE".
[48]
TS 22.282: "Mission Critical (MC) data over LTE".
[49]
TS 24.501: "Non-Access-Stratum (NAS) protocol for 5G System (5GS); Stage 3".
[50]
RFC 4574:  "The Session Description Protocol (SDP) Label Attribute".
[51]
TS 26.238: "Uplink Streaming".
[52]
RFC 6733:  "Diameter Base Protocol".
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3  Definitions and abbreviationsWord‑p. 12

3.1  Definitions

For the purposes of the present document, the terms and definitions given in TR 21.905 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.
Application Function (AF):
Element offering application(s) that use PDU session resources.
AF application session context:
Application level session context established by an application level signalling protocol offered by the AF that requires a session context set-up with explicit session context description before the use of the service.
MCS session:
A session for which priority treatment is applied for allocating and maintaining radio and network resources to support the Mission Critical Service (MCS). MCS is defined in TS 22.179, TS 22.280, TS 22.281, and TS 22.282.
MPS session:
A session for which priority treatment is applied for allocating and maintaining radio and network resources to support the Multimedia Priority Service (MPS). MPS is defined in TS 22.153.
PCC rule:
Set of information enabling the detection of a service data flow and providing parameters for policy control and/or charging control.
Service information:
Set of information conveyed from the AF/NEF to the PCF by the Npcf_PolicyAuthorization service to be used as a basis for PCC decisions at the PCF, including information about the AF/NEF application session context (e.g. application identifier, type of media, bandwidth, IP address and port number).
Service data flow:
An aggregate set of packet flows.
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3.2  Abbreviations

For the purposes of the present document, the abbreviations given in TR 21.905 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.
5G-RG
5G Residential Gateway
AF
Application Function
ARP
Allocation and Retention Priority
ATSSS
Access Traffic Steering, Switching and Splitting
BBF
Broadband Forum
BMIC
Bridge Management Information Container
BSSID
Basic Service Set IDentifier
CHEM
Coverage and Handoff Enhancements using Multimedia error robustness feature
CHF
Charging Function
DEI
Drop Eligible Indicator
DNAI
DN Access Identifier
DNN
Data Network Name
DS-TT
Device-side TSN translator
E-UTRA
Evolved Universal Terrestrial Radio Access
FLUS
Framework for Live Uplink Streaming
FN-RG
Fixed Network Residential Gateway
GPSI
Generic Public Subscription Identifier
HFC
Hybrid Fiber-Coaxial
H-PCF
PCF in the HPLMN
IMS
IP-Multimedia Subsystem
JSON
JavaScript Object Notation
MA
Multi-Access
MCPTT
Mission Critical Push to Talk Service
MCVideo
Mission Critical Video
MPS
Multimedia Priority Service
NEF
Network Exposure Function
NID
Network Identifier
NR
New Radio
NRF
Network Repository Function
NWDAF
Network Data Analytics Function
NW-TT
Network-side TSN translator
PCC
Policy and Charging Control
PCF
Policy Control Function
PCP
Priority Code Point
P-CSCF
Proxy Call Session Control Function
PEI
Permanent Equipment Identifier
PMIC
Port Management Information Container
PRA
Presence Reporting Area
QoS
Quality of Service
RFSP
RAT Frequency Selection Priority
RTCP
Real Time Control Protocol
RTP
Real Time Protocol
SDF
Service Data Flow
SDP
Session Description Protocol
SIP
Session Initiation Protocol
SMF
Session Management Function
S-NSSAI
Single Network Slice Selection Assistance Information
SNPN
Stand-alone Non-Public Network
SSID
Service Set IDentifier
SUPI
Subscription Permanent Identifier
TNAP
Trusted Non-3GPP Access Point
TSC
Time Sensitive Communication
TSCAI
Time Sensitive Communication Assistance Information
TSN
Time Sensitive Networking
UDR
Unified Data Repository
UPF
User Plane Function
URSP
UE Route Selection Policy
VID
VLAN Identifier
VLAN
Virtual Local Area Network
V-PCF
PCF in the VPLMN
W-5GAN
Wireline 5G Access Network
W-5GBAN
Wireline 5G BBF Access Network
W-5GCAN
Wireline 5G Cable Access Network
W-AGF
Wireline Access Gateway Function
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