Content for TR 23.718 Word version: 13.0.0
1 Scope
2 References
3 Definitions and abbreviations
3.1 Definitions
3.2 Abbreviations
4 Architectural Assumptions
4.1 Traffic steering policy generator - PCRF
...
...
1 Scope p. 6
The present document studies and evaluates architectural enhancements required for 3GPP systems to provide flexible mobile service steering policies as per the service requirements defined in clause 30 of TS 22.101.
2 References p. 6
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 22.101: "Service aspects; Service principles ".
[3]
TS 23.203: "Policy Control and Charging Architecture".
[4]
TS 29.212: "Policy and Charging Control (PCC); Reference points"
[5]
draft-ietf-sfc-architecture-07: "Service Function Chaining (SFC) Architecture".
[6]
draft-ietf-sfc-nsh-00: "Network Service Header".
[7]
draft-ietf-sfc-use-case-mobility-03: "Service Function Chaining Use Cases in Mobile Networks".
3 Definitions and abbreviations p. 6
3.1 Definitions p. 6
For the purposes of the present document, the terms and definitions given in TR 21.905, TS 22.101, 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.
Metadata:
Information needed by the service functions in the (S)Gi-LAN to perform service (e.g. user identification, device information, IP-CAN type, RAT-Type, User Location Information).
3.2 Abbreviations p. 6
4 Architectural Assumptions p. 7
4.1 Traffic steering policy generator - PCRF p. 7
In order to realize traffic steering in the operator deployed (S)Gi-LAN, the network operator uses various parameters, related to the subscriber session and the application traffic, to define traffic steering policies. These policies are used to control the steering of the subscriber's traffic to appropriate service enablers (e.g. NAT, antimalware, parental control, DDoS protection) in the (S)Gi-LAN.
The PCRF is extended to support generation of traffic steering policy for the support of flexible service steering in the (S)Gi-LAN. This will ensure a central function controlling all the subscriber related policies within the 3GPP core network architecture. In the home routed scenario, H-PCRF shall be able to generate the traffic steering policy for home routed traffic.
The PCRF may use one or more pieces of information available in the PCRF (as described in the clause 6.2.1.1 of the TS 23.203), such as the IP-CAN session information and subscription information and network operator's policies as input for generation of traffic steering policies.
