1、 ETSI TR 121 900 V15.0.0 (2018-06) Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); LTE; Technical Specification Group working methods (3GPP TR 21.900 version 15.0.0 Release 15) TECHNICAL REPORT ETSI ETSI TR 121 900 V15.0.0 (2018-06)13GP
2、P TR 21.900 version 15.0.0 Release 15Reference RTR/TSGS-0021900vf00 Keywords GSM,LTE,UMTS ETSI 650 Route des Lucioles F-06921 Sophia Antipolis Cedex - FRANCE Tel.: +33 4 92 94 42 00 Fax: +33 4 93 65 47 16 Siret N 348 623 562 00017 - NAF 742 C Association but non lucratif enregistre la Sous-Prfecture
3、 de Grasse (06) N 7803/88 Important notice The present document can be downloaded from: http:/www.etsi.org/standards-search The present document may be made available in electronic versions and/or in print. The content of any electronic and/or print versions of the present document shall not be modi
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9、TR 121 900 V15.0.0 (2018-06)23GPP TR 21.900 version 15.0.0 Release 15Intellectual Property Rights Essential patents IPRs essential or potentially essential to normative deliverables may have been declared to ETSI. The information pertaining to these essential IPRs, if any, is publicly available for
10、ETSI members and non-members, and can be found in ETSI SR 000 314: “Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in respect of ETSI standards“, which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web server (https:
11、/ipr.etsi.org/). Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web server) which are, or may be, or may become, essenti
12、al to the present document. Trademarks The present document may include trademarks and/or tradenames which are asserted and/or registered by their owners. ETSI claims no ownership of these except for any which are indicated as being the property of ETSI, and conveys no right to use or reproduce any
13、trademark and/or tradename. Mention of those trademarks in the present document does not constitute an endorsement by ETSI of products, services or organizations associated with those trademarks. Foreword This Technical Report (TR) has been produced by ETSI 3rd Generation Partnership Project (3GPP).
14、 The present document may refer to technical specifications or reports using their 3GPP identities, UMTS identities or GSM identities. These should be interpreted as being references to the corresponding ETSI deliverables. The cross reference between GSM, UMTS, 3GPP and ETSI identities can be found
15、under http:/webapp.etsi.org/key/queryform.asp. Modal verbs terminology In the present document “should“, “should not“, “may“, “need not“, “will“, “will not“, “can“ and “cannot“ are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of provisions)
16、. “must“ and “must not“ are NOT allowed in ETSI deliverables except when used in direct citation. ETSI ETSI TR 121 900 V15.0.0 (2018-06)33GPP TR 21.900 version 15.0.0 Release 15Contents Intellectual Property Rights 2g3Foreword . 2g3Modal verbs terminology 2g3Foreword . 5g3Introduction 5g31 Scope 6g3
17、1A References 6g32 Definitions and abbreviations . 6g33 General responsibilities of the Support Team 7g33.1 Specifications, meetings and liaisons . 7g33.2 Registration of code points . 7g34 Handling of Specifications . 8g34.0 Numbering scheme . 8g34.0A Version nomenclature . 11g34.0B Releases 11g34.
18、1 Overview 12g34.1.1 General 12g34.1.2 Role of the rapporteur . 13g34.2 Characteristics of a specification 13g34.3 Characteristics of a major version of a specification 14g34.4 Characteristics of a version of a specification 15g34.5 (void) 15g34.6 Change Request regime 15g34.6.1 Change Requests . 15
19、g34.6.2 Change Request forms 16g34.6.3 Contents of Change Requests . 18g34.6.4 Handling of the Change Requests . 18g34.6.5 Updating and release of new versions of the specifications 19g34.6.6 Other changes to specifications 19g34.7 “Freezing“ of specifications . 19g34.8 “Closing“ of specifications .
20、 20g34.9 “Withdrawing“ of specifications 20g34.9A “Withdrawing“ of functionality 20g34.9B Procedure for withdrawing of specifications and functionality 20g34.9B.2 Diligent assessment. 20g34.9B.3 Changes to affected specifications 20g34.9B.4 Considerations for ongoing maintenance, enhancement and new
21、 Release versions of specifications 21g34.10 Release control . 21g34.10.1 Creation of a new Release version of a specification . 21g34.10.1.1 With no technical changes compared to the previous Release 21g34.10.1.2 When introducing technical changes . 21g34.10.1.3 Specifications not propagated to nex
22、t Release 21g34.10.2 Mirror Change Requests . 21g34.10.3 Release mechanisms . 22g34.10.3.1 Corrections to Releases . 22g34.10.3.2 New features . 23g34.10.3.3 Release naming . 23g34.10.3.4 Introduction of features into Releases . 23g34.10.3.5 Early implementation of features 24g35 Availability and di
23、stribution of specifications . 24g35A File naming conventions 25g3ETSI ETSI TR 121 900 V15.0.0 (2018-06)43GPP TR 21.900 version 15.0.0 Release 156 Work Items . 26g36.0 Introduction 26g36.0.1 Introduction: why manage a project? 26g36.0.2 How to manage a project? 26g36.0.3 Types of modifications to sp
24、ecifications 28g36.1 Creation of a Work Item . 28g36.2 Type of Work Items . 29g36.3 Start and continuation of the work and responsibilities 29g36.3.1 General 29g36.3.2 Role of the rapporteur . 30g36.4 Realization of Work Items 30g36.4.1 Planning and categorization of the deliverables (and control th
25、ereof) 30g36.4.2 Choice of deliverables 30g36.4.3 Contents of deliverables 31g36.4.3.1 Service requirements. 31g36.4.3.2 Technical realization specifications 31g36.4.3.3 Test specifications . 31g36.4.4 Early implementation 31g36.4.5 Late completion 32g36.5 Status tracking of Work Items 32g36.6 Work
26、Item model 32g37 Management documents and tools . 33g37.1 Status List of Specifications . 33g37.2 Work Item Status List . 33g37.3 Change Request data base 34g37.4 Mailing lists and Membership data bases . 34g37.5 Electronic tools used/preferred . 34g37.6 WEB and FTP services . 34g37.7 E-mail reflect
27、ors . 34g38 E-mail decisions . 34g38.1 E-mail drafting phase . 34g38.2 E-mail decision declaration 35g38.3 Status reporting 35g38.4 Decision announcement . 35g38.5 Timing 35g38.6 General . 35g39 Meeting contribution document types and status values 35g39.1 Terminology . 35g39.2 TDoc status values 37
28、g3Annex A: Change history 40g3History 43g3ETSI ETSI TR 121 900 V15.0.0 (2018-06)53GPP TR 21.900 version 15.0.0 Release 15Foreword This Technical Specification has been produced by the 3rdGeneration Partnership Project (3GPP). The contents of the present document are subject to continuing work within
29、 the TSG and may change following formal TSG approval. Should the TSG modify the contents of the present document, it will be re-released by the TSG with an identifying change of release date and an increase in version number as follows: Version x.y.z where: x the first digit: 1 presented to TSG for
30、 information; 2 presented to TSG for approval; 3 or greater indicates TSG approved document under change control. y the second digit is incremented for all changes of substance, i.e. technical enhancements, corrections, updates, etc. z the third digit is incremented when editorial only changes have
31、been incorporated in the document. Introduction In order to ensure correctness and consistency of the specifications (i.e., technical specifications and technical reports) under responsibility of the Technical Specification Groups (TSG) of the 3rdGeneration Partnership Project (3GPP), clear, managea
32、ble and efficient mechanisms are necessary to handle version control, change control, document updating, distribution and management. Also, the fact that the specifications are/will be implemented by industry almost in parallel with the writing of them requires strict and fast procedures for handlin
33、g of changes to the specifications. It is very important that the changes that are brought into the standard, from the past, at present and in the future, are well documented and controlled, so that technical consistency and backwards tracing are ensured. The 3GPP TSGs, and their sub-groups together
34、 with the Support Team are responsible for the technical content and consistency of the specifications whilst the Support Team alone is responsible for the proper management of the entire documentation, including specifications, meeting documents, administrative information and information exchange
35、with other bodies. ETSI ETSI TR 121 900 V15.0.0 (2018-06)63GPP TR 21.900 version 15.0.0 Release 151 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 docume
36、nt 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
37、 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 c
38、ontain 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 n
39、on-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 3GPP TR 21.801: “Specification drafting rules“
40、. 2 3GPP TR 21.905: “Vocabulary for 3GPP Specifications“. 3 3GPP TS 21.101: “Technical Specifications and Technical Reports for a UTRAN-based 3GPP system“. 4 3GPP TS 41.101: “Technical Specifications and Technical Reports for a GERAN-based 3GPP system“. 5 ITU-T Recommendation I.130: “Method for the
41、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 2 apply. building block: sub-division of a feature, representing a coher
42、ent 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
43、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 implementati
44、on: 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 per
45、mitted. ETSI ETSI TR 121 900 V15.0.0 (2018-06)73GPP TR 21.900 version 15.0.0 Release 15functionality: normative text contained in one or more Technical Specifications, corresponding either to a feature or to some portion of a feature. Group: TSG or TSG Sub-Group. major version: For version x.y.z of
46、a specification, x is called the major version. Example: For version 3.2.0 of a specification, the major version is 3. specification: generic term standing for Technical Specification and Technical Report. Study Item: type of Work Item which will conduct feasibility studies and will result in a Tech
47、nical Report TSG: Technical Specification Group. TSG change control: specification status in which the Technical Specification Group is responsible for approval of Change Requests. TSG Sub-Group: Working Group or subgroup of a Working Group or of a Sub-Group. Working Group (WG): official subgroup of
48、 a TSG reporting to that TSG. WG Change Control: specification status in which the Working Group is responsible for agreeing Change Requests for submission to the TSG for approval. version: unique identifier in the form x.y.z for a specification at a given point in time. Example: version 3.12.3. wit
49、hdrawn: specification status in which the given version of the specification no longer belongs to the appropriate set of valid specifications. Work Item (WI): description of an enhancement to a technical area, which may be categorized as Study Item, Feature, Building Block or Work Task. Work Item description (WID): description of a Work Item in a standard Work Item Description sheet. work task: sub-division of a building block, representing a self-contained, well-scoped and well-scheduled item of work. 3 General responsibilities of the Support Team 3.1 Specificatio
