3GPP Work Item description

This page contains informal descriptive text only.  See master WID page for further details.

Feature:     Handling of early User Equipments (UEs)

The WI documents the mechanism to provide the 3GPP network entities with UE Specific Behavior Information (UESBI).  UESBI may be used by correcting mechanisms to overcome some of the issues that will be catered for (typically in TR 25.994).  The description of these correcting mechanisms is out of the scope of this study.

The objective of this Work Item is to study the 3GPP architecture impacts and merits of handling indications regarding UE maturity (without duplicating work that is within the responsibility of TSG-RAN).

The candidates identified by TSG RAN were:

• Hooks included into some early RRC messages;

• Extension mechanism to the RRC messages allowing R99 corrections, when Rel-4 changes needs to be backwards compatible.

• IMEI-SV solution to the core network, with an indication to the UTRAN and GERAN; indication may be derived from IMEI-SV or may be IMEI-SV itself.

A Technical Report describing these alternative architectures will be produced, followed by a stage 2 document to specify how the combination of the selected techniques can be used to handle UEs of different maturity. This stage 2 specification will focus on issues related to UMTS functionality and GSM-UMTS handover.  Unless there is a specific request from TSG-GERAN, this stage 2 will not deal with A/Gb issues apart from GSM-UMTS handover.  The contents of the stage 2 specification shall not exceed the requirements identified in clause 4 (“Network Entities that could use UE Specific Behaviour Information”) of TR 23.895.

Work to be led by S2.