SMG4/TSG-CN3/TSG-T2
London, 15-19 March 1999	TSGT2#2(99)275

Agenda Item:	General features (SWG6)

Document for:	Information

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TSG-RAN Working Group1 meeting #3	TSGR1#2(99)XXX
Eskilstuna, Sweden 22-26, March 1999	TSGR1#3(99)147

Agenda Item:	

Source:	NTT DoCoMo

Title:	Principles for UE Capabilities

Document for:	Discussion/Decision

CC:	

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1.	Introduction
Essential specifications have to be issued by April for initial release that aims to start the IMT-2000 service in spring of 2001 as ARIB requested to 3GPP. To ensure defining the specifications, classifications of the terminals are essential. UE capabilities shall be specified together with the terminal classes. This will highlight essential functions and their combinations for each layer to realise various optional services and capabilities.
This document describes requirements and principles for the definition of the UE capabilities.

2.	Requirements
1) IMT-2000 terminals will be required same size and cost as that of the second-generation terminals.
2) The requirement of very small speech-service terminals that is highly competitive with the second generation is quite important. Because there is a big demand for the speech-service only terminals in the region of facing a lack of the spectrum due to marked increase of subscribers, especially in Japan.
3) Due to the short time scales for commercial service launch in Japan, only the technical proposals and descriptions that are defined in detail in the present can be specified as far as we scope conducting conformance test.
4) Various improved techniques will be specified and commercialised additionally in the future, e.g. half-rate speech codec in the 2nd generation systems, thus it is essential to define classification of the terminals with phased approach.

Conclusion
According to the above requirements, minimal functions or the minimum sets of UE capabilities shall be specified to enable minimum service, i.e. essential functions that enable a terminal to provide at least speech-service.
The technical proposals and descriptions that would not be specified until December 1999 should be out of the initial release of the specifications. They should be treated as prospective TBD items.