1、 ETSI TR 1Digital cellular telecommUniversal Mobile TelTechnical Specifi(3GPP TR 21.9TECHNICAL REPORT 121 900 V13.1.0 (2017mmunications system (Phase elecommunications System (LTE; ification Group working meth.900 version 13.1.0 Release 1317-01) e 2+) (GSM); (UMTS); thods 13) ETSI ETSI TR 121 900 V1
2、3.1.0 (2017-01)13GPP TR 21.900 version 13.1.0 Release 13Reference RTR/TSGS-0021900vd10 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 enregistr
3、e la Sous-Prfecture 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 documen
4、t shall not be modified without the prior written authorization of ETSI. In case of any existing or perceived difference in contents between such versions and/or in print, the only prevailing document is the print of the Portable Document Format (PDF) version kept on a specific network drive within
5、ETSI Secretariat. Users of the present document should be aware that the document may be subject to revision or change of status. Information on the current status of this and other ETSI documents is available at https:/portal.etsi.org/TB/ETSIDeliverableStatus.aspx If you find errors in the present
6、document, please send your comment to one of the following services: https:/portal.etsi.org/People/CommiteeSupportStaff.aspx Copyright Notification No part may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm except as authorized b
7、y written permission of ETSI. The content of the PDF version shall not be modified without the written authorization of ETSI. The copyright and the foregoing restriction extend to reproduction in all media. European Telecommunications Standards Institute 2017. All rights reserved. DECTTM, PLUGTESTST
8、M, UMTSTMand the ETSI logo are Trade Marks of ETSI registered for the benefit of its Members. 3GPPTM and LTE are Trade Marks of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners. GSM and the GSM logo are Trade Marks registered and owned by the GSM Association. ET
9、SI ETSI TR 121 900 V13.1.0 (2017-01)23GPP TR 21.900 version 13.1.0 Release 13Intellectual Property Rights IPRs essential or potentially essential to the present document may have been declared to ETSI. The information pertaining to these essential IPRs, if any, is publicly available for ETSI members
10、 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:/ipr.etsi.or
11、g/). 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, essential to the pr
12、esent document. Foreword This Technical Report (TR) has been produced by ETSI 3rd Generation Partnership Project (3GPP). 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 referenc
13、es to the corresponding ETSI deliverables. The cross reference between GSM, UMTS, 3GPP and ETSI identities can be found 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
14、 to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of provisions). “must“ and “must not“ are NOT allowed in ETSI deliverables except when used in direct citation. ETSI ETSI TR 121 900 V13.1.0 (2017-01)33GPP TR 21.900 version 13.1.0 Release 13Con
15、tents Intellectual Property Rights 2g3Foreword . 2g3Modal verbs terminology 2g3Foreword . 5g3Introduction 5g31 Scope 6g31A References 6g32 Definitions and abbreviations . 6g33 General responsibilities of the Support Team 7g33.1 Specifications, meetings and liaisons . 7g33.2 Registration of code poin
16、ts . 7g34 Handling of Specifications . 8g34.0 Numbering scheme . 8g34.0A Version nomenclature . 10g34.0B Releases 10g34.1 Overview 11g34.1.1 General 11g34.1.2 Role of the rapporteur . 12g34.2 Characteristics of a specification 12g34.3 Characteristics of a major version of a specification 13g34.4 Cha
17、racteristics of a version of a specification 14g34.5 (void) 14g34.6 Change Request regime 14g34.6.1 Change Requests . 14g34.6.2 Change Request forms 15g34.6.3 Contents of Change Requests . 17g34.6.4 Handling of the Change Requests . 17g34.6.5 Updating and release of new versions of the specification
18、s 18g34.6.6 Other changes to specifications 18g34.7 “Freezing“ of specifications . 18g34.8 “Closing“ of specifications . 19g34.9 “Withdrawing“ of specifications 19g34.9A “Withdrawing“ of functionality 19g34.9B Procedure for withdrawing of specifications and functionality 19g34.9B.2 Diligent assessme
19、nt. 19g34.9B.3 Changes to affected specifications 19g34.9B.4 Considerations for ongoing maintenance, enhancement and new Release versions of specifications 20g34.10 Release control . 20g34.10.1 Creation of a new Release version of a specification . 20g34.10.1.1 With no technical changes compared to
20、the previous Release 20g34.10.1.2 When introducing technical changes . 20g34.10.1.3 Specifications not propagated to next Release 20g34.10.2 Mirror Change Requests . 20g34.10.3 Release mechanisms . 21g34.10.3.1 Corrections to Releases . 21g34.10.3.2 New features . 22g34.10.3.3 Release naming . 22g34
21、.10.3.4 Introduction of features into Releases . 22g34.10.3.5 Early implementation of features 23g35 Availability and distribution of specifications . 23g3ETSI ETSI TR 121 900 V13.1.0 (2017-01)43GPP TR 21.900 version 13.1.0 Release 135A File naming conventions 24g36 Work Items . 25g36.0 Introduction
22、 25g36.0.1 Introduction: why manage a project? 25g36.0.2 How to manage a project? 26g36.0.3 Types of modifications to specifications 27g36.1 Creation of a Work Item . 27g36.2 Type of Work Items . 28g36.3 Start and continuation of the work and responsibilities 28g36.3.1 General 28g36.3.2 Role of the
23、rapporteur . 29g36.4 Realization of Work Items 29g36.4.1 Planning and categorization of the deliverables (and control thereof) 29g36.4.2 Choice of deliverables 30g36.4.3 Contents of deliverables 30g36.4.3.1 Service requirements. 30g36.4.3.2 Technical realization specifications 30g36.4.3.3 Test speci
24、fications . 30g36.4.4 Early implementation 30g36.4.5 Late completion 31g36.5 Status tracking of Work Items 31g36.6 Work 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 33g37.4 Mailing lists and
25、 Membership data bases . 33g37.5 Electronic tools used/preferred . 33g37.6 WEB and FTP services . 33g37.7 E-mail reflectors . 34g38 E-mail decisions . 34g38.1 E-mail drafting phase . 34g38.2 E-mail decision declaration 34g38.3 Status reporting 34g38.4 Decision announcement . 35g38.5 Timing 35g38.6 G
26、eneral . 35g39 Meeting contribution document types and status values 35g39.1 Terminology . 35g39.2 TDoc status values 37g3Annex A: Change history 39g3History 41g3ETSI ETSI TR 121 900 V13.1.0 (2017-01)53GPP TR 21.900 version 13.1.0 Release 13Foreword This Technical Specification has been produced by
27、the 3rdGeneration Partnership Project (3GPP). The contents of the present document are subject to continuing work within 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 r
28、elease date and an increase in version number as follows: Version x.y.z where: x the first digit: 1 presented to TSG for 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.
29、e. technical enhancements, corrections, updates, etc. z the third digit is incremented when editorial only changes have been incorporated in the document. Introduction In order to ensure correctness and consistency of the specifications (i.e., technical specifications and technical reports) under re
30、sponsibility of the Technical Specification Groups (TSG) of the 3rdGeneration Partnership Project (3GPP), clear, manageable and efficient mechanisms are necessary to handle version control, change control, document updating, distribution and management. Also, the fact that the specifications are/wil
31、l be implemented by industry almost in parallel with the writing of them requires strict and fast procedures for handling 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 c
32、ontrolled, so that technical consistency and backwards tracing are ensured. The 3GPP TSGs, and their sub-groups together 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
33、 entire documentation, including specifications, meeting documents, administrative information and information exchange with other bodies. ETSI ETSI TR 121 900 V13.1.0 (2017-01)63GPP TR 21.900 version 13.1.0 Release 131 Scope This document outlines the working methods to be used by the 3GPP Technica
34、l 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 th
35、e 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
36、 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
37、 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 lates
38、t version of that document in the same Release as the present document. 1 3GPP TR 21.801: “Specification drafting rules“. 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: “Techn
39、ical Specifications and Technical Reports for a GERAN-based 3GPP system“. 5 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,
40、the following terms and those in 3GPP TR 21.905 2 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 specificati
41、on 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: speci
42、fication 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
43、 represents added value to the existing system. ETSI ETSI TR 121 900 V13.1.0 (2017-01)73GPP TR 21.900 version 13.1.0 Release 13frozen: specification status in which only essential corrections are permitted. functionality: normative text contained in one or more Technical Specifications, correspondin
44、g 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 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 Specificat
45、ion and Technical Report. Study Item: type of Work Item which will conduct feasibility studies and will result in a Technical Report TSG: Technical Specification Group. TSG change control: specification status in which the Technical Specification Group is responsible for approval of Change Requests.
46、 TSG Sub-Group: Working Group or subgroup of a Working Group or of a Sub-Group. Working Group (WG): official subgroup of 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.
47、 version: unique identifier in the form x.y.z for a specification at a given point in time. Example: version 3.12.3. withdrawn: 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 enh
48、ancement 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 w
49、ell-scheduled item of work. 3 General responsibilities of the Support Team 3.1 Specifications, meetings and liaisons The Support Team is responsible for the management of the work of the TSGs. This includes editorship and management of specifications once they have been put under TSG change control. It also includes preparation of and support for the meetings (including meeting reports) of the TSGs and their Working Groups, and subgroups in descending priority. It furthermore includes liaison with other bodies and relevant groups and institutions. 3.2 Registration
