Content for TR 23.714 Word version: 14.0.0

1 Scope p. 7

The objective of this Technical Report is to study and perform an evaluation of potential architecture enhancements for the separation of user plane functionality from control plane functionality in the EPC's S-GW, P-GW and TDF to further enable flexible (i.e. distributed or centralized) network deployment and operation.

Specifically, the following aspects are covered:

Functional separation of the S-GW, P-GW and TDF into control plane and user plane functions, while not affecting the overall functionality provided by these nodes.
The needed reference points between the separated control plane and user plane functions of the S-GW, P-GW and TDF and the corresponding procedures.
Impacts to other EPC entities and interfaces that are essential to support the separation of S-GW, P-GW and TDF into control plane and user plane functions, and to enable the flexible placement of the separated control plane and user plane functions for supporting diverse deployment scenarios.

2 References p. 7

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 23.401: "General Packet Radio Service (GPRS) enhancements for Evolved Universal Terrestrial Radio Access Network (E-UTRAN) access".

[3]

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

[4]

TS 23.203: "Policy and charging control architecture".

[5]

TS 29.303: "Domain Name System Procedures; Stage 3".

[6]

TS 33.107: "3G security; Lawful interception architecture and functions".

3 Definitions and abbreviations p. 7

3.1 Definitions p. 7

For the purposes of the present document, the terms and definitions given in TR 21.905, TS 23.401, TS 23.402, TS 23.203 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.

F-TEID-u:

Fully Qualified (GTP-u) Tunnel Endpoint Identifier: IP address + TEID of a GTP-u tunnel (TEID-u). When no reference to an IP version is made, "IP address" may refer to an IPv4 address and/or to an IPv6 Prefix.

3.2 Abbreviations p. 8

For the purposes of the present document, the abbreviations given in TR 21.905, TS 23.401, TS 23.402, TS 23.203 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.

Control Plane

User Plane