ETSI
ETSI TR 121 900 V10.0.0 (2011
3GPP TR 21.900 version 10.0.0 Release 10
1 Scope
This document outlines the working methods to be used by the 3GPP Technical Specification Groups and their Working
Groups and their Sub-Groups, and by the 3GPP Support Team in relation to document management, i.e. handling of
specifications, updating procedures, Change Request procedures, version control mechanisms, specifications status
information etc. It complements the rules and procedures defined for 3GPP. This document does not stipulate the details
of the internal working of the TSG Sub-Groups. From the Technical Specification Group point of view, a task and
responsibility is given to a Working Group directly answering to the Technical Specification Group. In practice, the
work/task may be carried out in a subgroup of that Working Group.
1A References
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.
3GPP TR 21.801: "Specification drafting rules".
3GPP TR 21.905: "Vocabulary for 3GPP Specifications".
3GPP TS 21.101: "Technical Specifications and Technical Reports for a UTRAN-based 3GPP system".
3GPP TS 41.101: "Technical Specifications and Technical Reports for a GERAN-based 3GPP system".
ITU-T Recommendation I.130: "Method for the characterization of telecommunication services supported by an
ISDN and network capabilities of an ISDN".
2 Definitions and abbreviations
For the purposes of the present document, the following terms and those in 3GPP TR 21.905 apply.
building block: sub-division of a feature, representing a coherent set of technical functionality which would generally
be expected to reside in a single system element.
change control: procedure whereby proposed modifications to a specification are presented for approval to the TSG as
formal Change Requests.
closed: specification status in which no changes of any kind to the specification are permitted.
Change Request (CR): formal proposal presented on a standard form to modify a specification which is under change
control.
draft: specification status prior to change control, in which changes may be made without formal Change Requests.
early implementation: implementation of a particular feature on a platform of a release earlier than the release that
contains the feature.
feature: new or substantially enhanced functionality which represents added value to the existing system.
frozen: specification status in which only essential corrections are permitted.
Group: TSG or TSG Sub-Group.