Content for TS 29.213 Word version: 18.0.0

1 Scope p. 10

The present specification adds detailed flows of Policy and Charging Control (PCC) over the Diameter-based Rx, Gx, Gxx, Sd, Sy, S9, Nt, Diameter-based St and Np reference points and their relationship with the bearer level signalling flows over the Gn/Gp, S4, S5/S8, S2a and S2c interfaces.

The calls flows depicted in this Technical Specification represent usual cases, i.e. not all situations are covered. Detailed information provided in TS 29.212, TS 29.214, TS 29.215, TS 29.217 , TS 29.154 and TS 29.219 shall be taken into consideration.

The present specification also describes the PCC reference architectures for non-roaming and roaming scenarios.

The present specification also describes the binding and the mapping of QoS parameters among SDP, UMTS QoS parameters, and QoS authorization parameters.

The present specification also describes the PCRF addressing using DRA.

The present specification also describes Diameter race condition handling for Gx based applications, i.e Gx, Gxx, Sd and S9.

2 References p. 10

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 and/or edition number or version number) 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 23.203: "Policy Control and charging architecture".

[3]

TS 23.060: "General Packet Radio Service (GPRS); Service description; Stage 2".

[4]

TS 23.107: "Quality of Service (QoS) concept and architecture".

[5]

TS 24.229: "IP Multimedia Call Control Protocol based on SIP and SDP; Stage 3".

[6]

TS 26.234: "End-to-end transparent streaming service; Protocols and codecs".

[7] Void

[8] Void

[9]

TS 29.212: "Policy and Charging Control (PCC); Reference points".

[10]

TS 29.214: "Policy and Charging Control over Rx reference point".

[11]

RFC 2327: "SDP: Session Description Protocol".

[12]

RFC 3264: "An Offer/Answer model with the Session Description Protocol (SDP)".

[13]

RFC 3556: "Session Description Protocol (SDP) Bandwidth Modifiers for RTP Control Protocol (RTCP) Bandwidth".

[14] Void.

[15] Void.

[16]

RFC 4145: "TCP-Based Media Transport in the Session Description Protocol (SDP)".

[17]

RFC 4975: "The Message Session Relay Protocol (MSRP)".

[18]

3GPP2 C.S0046-0 v1.0: "3G Multimedia Streaming Services".

[19]

3GPP2 C.S0055-A v1.0: "Packet Switched Video Telephony Services (PSVT/MCS)".

[20] Void

[21]

TS 23.402: "Architecture Enhancements for non-3GPP accesses".

[22]

TS 29.215: "Policy and Charging Control over S9 reference point".

[23]

RFC 3890: "A Transport Independent Bandwidth Modifier for the Session Description Protocol (SDP) ".

[24]

TS 24.292: "IP Multimedia (IM) Core Network (CN) subsystem Centralized Services (ICS); Stage 3".

[27]

TS 23.216: "Single Radio Voice Call Continuity (SRVCC); Stage 2".

[28]

TS 29.219: "Policy and Charging Control over Sy reference point".

[29]

TS 26.114: "IP Multimedia Subsystem (IMS); Multimedia Telephony; Media handling and interaction"

[30]

TS 26.247: "Transparent end-to-end Packet-switched Streaming Service (PSS) Progressive Download and Dynamic Adaptive Streaming over HTTP (3GP-DASH) ".

[31]

Void.

[32]

Broadband Forum WT-134: "Policy Control Framework" (work in progress).

[33]

RFC 7683: "Diameter Overload Indication Conveyance".

[34]

TS 23.468: "Group Services and System Aspects; Group Communication System Enablers for LTE (GCSE LTE).

[35]

TS 23.380: "IMS Restoration Procedures".

[36]

TS 29.217: "Policy and Charging Control: Congestion Reporting over Np reference point".

[37]

TS 23.003: "Numbering, addressing and identification".

[38]

TS 23.682: "Architecture enhancements to facilitate communications with packet data networks and applications".

[39]

RFC 5761: "Multiplexing RTP Data and Control Packets on a Single Port".

[40]

RFC 7944: "Diameter Routing Message Priority".

[51]

TS 23.335: "User Data Convergence (UDC); Technical realization and information flows; Stage 2".

[52]

TS 29.335: "User Data Convergence (UDC); User Data Repository Access Protocol over the Ud interface; Stage 3".

[53]

TS 29.201: "Representational State Transfer (REST) reference point between Application Function (AF) and Protocol Converter (PC)".

[54]

TS 29.155: "Traffic Steering Control; Representational State Transfer (REST) over St reference point".

[55]

TS 32.240: "Telecommunication management; Charging management; Charging architecture and principles".

[56]

TS 29.154: "Service Capability Exposure Function over Nt reference point".

[57] Void.

[58]

TS 22.153: "Multimedia Priority Service".

[59]

TS 23.228: "IP Multimedia Subsystem (IMS); Stage 2".

[60]

RFC 8583: "Diameter Load Information Conveyance".

[61]

RFC 6733: "Diameter Base Protocol".

[62]

TS 29.250: "Nu reference point between SCEF and PFDF for sponsored data connectivity".

[63]

TS 29.251: "Gw and Gwn reference points for sponsored data connectivity".

[64]

TS 23.280: "Common functional architecture to support mission critical services; Stage 2".

[65]

TS 29.244: "Interface between the Control Plane and the User Plane of EPC Nodes; Stage 3".

[66]

TS 23.221: "Architectural requirements".

[67]

RFC 8445: "Interactive Connectivity Establishment (ICE): A Protocol for Network Address Translator (NAT) Traversal".

[68]

RFC 8839: "Session Description Protocol (SDP) Offer/Answer Procedures for Interactive Connectivity Establishment (ICE)".

[69]

RFC 8864: "Negotiation Data Channels Using the Session Description Protocol (SDP)".

3 Definitions and abbreviations p. 12

3.1 Definitions p. 12

For the purposes of the present document, the terms and definitions given in TR 21.905 and the following apply:

DRA binding:

The PCRF routing information stored per UE or per PDN in the DRA, which include the user identity (UE NAI), the UE Ipv4 address and/or Ipv6 prefix, the APN (if available) and the selected PCRF identity for a certain IP-CAN Session.

Gateway Control Session:

An association between a BBERF and a PCRF (when GTP is not used in the EPC), used for transferring access specific parameters, BBERF events and QoS rules between the PCRF and BBERF. In the context of this specification this is implemented by use of the Gxx procedures.

IP-CAN session:

association between a UE and an IP network. The association is identified by one or more UE Ipv4 addresses/ and/or Ipv6 prefix together with a UE identity information, if available, and a PDN represented by a PDN ID (e.g. an APN). An IP-CAN session incorporates one or more IP-CAN bearers. Support for multiple IP-CAN bearers per IP-CAN session is IP-CAN specific. An IP-CAN session exists as long as the related UE Ipv4 address and/or Ipv6 prefix are assigned and announced to the IP network.

Policy counter:

A mechanism within the OCS to track spending applicable for a subscriber.

Policy counter status:

A label whose values are not standardized and that is associated with a policy counter's value relative to the spending limit(s) (the number of possible policy counter status values for a policy counter is one greater than the number of thresholds associated with that policy counter, i.e policy counter status values describe the status around the thresholds). This is used to convey information relating to subscriber spending from OCS to PCRF. Specific labels are configured jointly in OCS and PCRF.

RAN user plane congestion:

RAN user plane congestion occurs when the demand for RAN resources exceeds the available RAN capacity to deliver the user data for a prolonged period of time.

Restricted local operator services:

communication services provided by an operator that involve either automated or human assistance (e.g. credit card billing, directory assistance, customer care) for which successful authentication is not necessary.

Spending limit:

A spending limit is the usage limit of a policy counter (e.g. monetary, volume, duration) that a subscriber is allowed to consume.

Spending limit report:

a notification, containing the current policy counter status generated from the OCS to the PCRF via the Sy reference point.

TDF session:

An association between an IP-CAN session and the assigned TDF for the purpose of application detection and control by the PCRF . The association is identified by one UE Ipv4 address and/or Ipv6 prefix together with optionally a PDN represented by a PDN ID and a set of ADC rules to be applied by the TDF.

3.2 Abbreviations p. 13

For the purpose of the present document, the abbreviations given in TR 21.905 and the following apply:

ADC

Application Detection and Control

Application Function

ARA

Aggregated RUCI Report Answer

ARP

Allocation and Retention Priority

ARR

Aggregated RUCI Report Request

AVP

Attribute-Value Pair

BBERF

Bearer Binding and Event Reporting Function

CHEM

Coverage and Handoff Enhancements using Multimedia error robustness feature

CSG

Closed Subscriber Group

CSG ID

Closed Subscriber Group Identity

CoA

Care of Address

DRA

Diameter Routing Agent

DRMP

Diameter Routing Message Priority

DSCP

Differentiated Services Code Point

DTS

Data Transport Service

GBR

Guaranteed Bitrate

GCS

Group Communication Service

GCS AS

Group Communication Service Application Server

H-AF

Home AF

H-DRA

Home DRA

H-PCRF

Home PCRF

HPLMN

Home PLMN

MBR

Maximum Bitrate

MUA

Modify UE context Answer

MUR

Modify UE context Request

MPS

Multimedia Priority Service

NBIFOM

Network-based IP flow mobility

NRA

Non-Aggregated RUCI Report Answer

NRR

Non-Aggregated RUCI Report Request

Proxy Agent

PCC

Policy and Charging Control

PCEF

Policy and Charging Enforcement Function

PCRF

Policy and Charging Rule Function

PGW

PDN-Gateway

PFDF

Packet Flow Description Function

RLOS

Restricted Local Operator Services

QCI

QoS Class Identifier

RCAF

RAN Congestion Awareness Function

RUCI

RAN User Plane Congestion Information

SCEF

Service Capability Exposure Function

SDF

Service Data Flow

SLA

Spending Limit Answer

SLR

Spending Limit Request

SNA

Spending-Status Notification Answer

SSD

Source Statistics Descriptor

SNR

Spending-Status Notification Request

STA

Session Termination Answer

TSSF

Traffic Steering Support Function

STR

Session Termination Request

TDF

Traffic Detection Function

UDC

User Data Convergence

UDR

User Data Repository

V-AF

Visited AF

V-DRA

Visited DRA

V-PCRF

Visited PCRF

VPLMN

Visited PLMN