Content for TR 23.711 Word version: 14.0.0
1 Scope p. 6
The present document investigates and evaluates possible solutions to improve the DCN selection of DECOR feature by adding assistance from the UE.
The assistance information from the UE is intended to reduce signalling required to select a DCN associated with the UE. It shall complement the Rel-13 DECOR selection mechanism. All 3GPP RATs are supported i.e. E-UTRAN, UTRAN, GERAN and NB-IOT. The enhancement can also improve the separation between dedicated core networks by avoiding redirections between DCNs i.e. avoiding UEs accessing DCN in which it is not allowed. It is advantageous if the solution works when the UE change serving PLMN.
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 23.401: "General Packet Radio Service (GPRS) enhancements for Evolved Universal Terrestrial Radio Access Network (E-UTRAN) access".
[3]
TS 23.008: "Organization of subscriber data".
[4]
TS 36.413: "Evolved Universal Terrestrial Radio Access Network (E-UTRAN); S1 Application Protocol (S1AP)".
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 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.
UE Usage Type:
The following definition exists in TS 23.008.
DCN Isolation/Separation:
"The UE Usage Type indicates the usage characteristics of the UE for use with Dedicated Core Networks (DCN); it is subscription information that enables the UE to be served by a specific DCN (i.e. one or more MME/SGSN and optionally one or more SGW/PGW/PCRF), as described in TS 23.401.
UE Usage Type is permanent data and conditionally stored in HSS, MME and SGSN".
DCN isolation/separation is the ability of the mechanism to prevent re-routing cases.
3.2 Abbreviations p. 7
For the purposes of the present document, the abbreviations given in TR 21.905 apply.
