Content for TS 29.215 Word version: 17.0.0

1 Scope p. 9

The present document provides the Stage 3 specification of the S9 reference point for the present release. The functional requirements of Stage 2 specification for the S9 reference point are contained in TS 23.203. The S9 reference point lies between the PCRF in the home PLMN (also known as H-PCRF) and the PCRF in the visited PLMN (also known as V-PCRF).

Whenever it is possible the present document specifies the requirements for the protocols by reference to specifications produced by the IETF within the scope of Diameter. Where this is not possible extensions to Diameter are defined within the present document.

2 References p. 9

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 23.203: "Policy and Charging Control Architecture"

[3]

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

[4]

TS 29.213: "Policy and charging control signalling flows and Quality of Service (QoS) parameter mapping"

[5]

TS 29.214: "Policy and charging control over Rx reference point"

[6] Void.

[7]

TS 29.229: "Cx and Dx interfaces based on the Diameter protocol; Protocol details"

[8]

RFC 4960: "Stream Control Transmission Protocol".

[9]

3GPP TS23.003: "Numbering, addressing and identification".

[10]

TS 23.261: "IP flow mobility and seamless Wireless Local Area Network (WLAN) offload; Stage 2".

[11] Void.

[12] Void.

[13]

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

[14]

Broadband Forum TR-203: "Interworking between Next Generation Fixed and 3GPP Wireless Access".

[15]

Broadband Forum TR-134: "Policy Control Framework".

[16]

Broadband Forum TR-146: "Subscriber Sessions".

[17]

DSL Forum TR-059: "DSL Evolution - Architecture. Requirements for the Support of QoS-Enabled IP Services", September 2003

[18]

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

[19]

RFC 4006: "Diameter Credit Control Application".

[20]

TS 23.007: "Restoration Procedures".

[21] Void.

[22]

TS 29.274: "3GPP Evolved Packet System. Evolved GPRS Tunnelling Protocol for EPS (GTPv2)".

[23]

3GPP2 X.S0057-B: "E-UTRAN - eHRPD Connectivity and Interworking: Core Network Aspects".

[24]

RFC 7683: "Diameter Overload Indication Conveyance".

[25]

RFC 4005: "Diameter Network Access Server Application".

[26]

TS 23.161: "Network-based IP flow mobility and Wireless Local Area Network (WLAN) offload; Stage 2".

[27]

RFC 7944: "Diameter Routing Message Priority".

[28]

RFC 8583: "Diameter Load Information Conveyance".

[29]

RFC 6733: "Diameter Base Protocol".

3 Definitions and abbreviations p. 10

3.1 Definitions p. 10

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.

Home Routed Access:

Roaming scenario where the PCEF is located in the HPLMN. In a Home Routed roaming scenario, the UE obtains access to the packet data network from the HPLMN.

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.

Visited Access (also known as local breakout):

Roaming scenario where the PCEF is located in the VPLMN. In a Visited Access Roaming scenario, the UE obtains access to the packet data network from the VPLMN.

3.2 Abbreviations p. 10

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.

ADC

Application Detection and Control

Application Function

AN-Gateway

Access Network Gateway

AVP

Attribute-Value Pair

BBERF

Bearer Binding and Event Reporting Function

DRMP

Diameter Routing Message Priority

H-AF

Home AF

H-PCRF

Home PCRF

HPLMN

Home PLMN

Home-Routed

HRPD

High Rate Packet Data

HSGW

HRPD Serving Gateway

NBIFOM

Network-based IP flow mobility

OCS

Online charging system

OFCS

Offline charging system

PCC

Policy and Charging Control

PCEF

Policy and Charging Enforcement Function

PCRF

Policy and Charging Rule Function

RCAF

RAN Congestion Awareness Function

S-GW

Serving Gateway

TDF

Traffic Detection Function

TSSF

Traffic Steering Support Function

UDC

User Data Convergence

UDR

User Data Repository

Visited Access

V-AF

Visited AF

V-PCRF

Visited PCRF

VPLMN

Visited PLMN