3GPP TR 21.900: 移动通讯技术标准

ETSI-3GPP

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"ETSITR121900V11.0.1(2013-06)是欧洲电信标准化协会(ETSI)发布的一份技术报告，主要涉及移动通信系统，特别是第三代合作伙伴计划(3GPP)下的数字蜂窝通信系统(Phase 2+)和全球通用移动通信系统(UMTS)的技术规范。这份报告详细阐述了3GPP技术规范组的工作方法，并在Release 11版本中进行了更新。关键词包括GSM和UMTS，表明报告内容与这两项通信技术标准紧密相关。" 本文档是ETSI对于3GPP技术工作流程的一个重要参考资料，它涵盖了移动通信系统的多个方面。3GPP是一个国际组织，负责制定全球移动通信系统的标准，包括2G、3G、4G以及5G等。3GPP TR 21.900作为其中一份技术报告，详细定义了3GPP技术规范组的工作流程和方法，这些方法对于确保通信技术的标准化和互操作性至关重要。在3GPP TR 21.900 V11.0.1 Release 11中，我们可以预期找到关于如何协作开发、修订和维护UMTS技术规范的详细指导。UMTS是3G通信标准的一个关键部分，它为高速数据传输、语音通信和多媒体服务提供了平台。这个版本可能包含了对早期UMTS标准的改进，优化了网络性能，提升了用户体验，同时可能还包含了与GSM（全球系统 for 移动通信）的集成和演进信息，因为GSM是2G时代的主流标准，与UMTS有着密切的关联。报告中提到，用户可以访问ETSI官方网站下载该文档的PDF版本，这是官方认定的参考版本。如果存在不同电子版本或打印版本间的差异，应以在ETSI秘书处特定网络驱动器上保存的PDF版本为准。此外，文档还强调了在解决争议时，将基于ETSI打印机打印的PDF版本进行裁决。总体而言，此文档对于理解3GPP技术规范的制定过程，以及UMTS系统和GSM系统之间的交互具有深远意义，对于移动通信行业的工程师、研发人员以及标准制定者来说，是一份不可或缺的参考资料。

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ETSI

ETSI TR 121 900 V11.0.1 (2013

06)

3GPP TR 21.900 version 11.0.1 Release 11

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.

ETSI

ETSI TR 121 900 V11.0.1 (2013

06)

3GPP

TR 21.900 version 11.0.1 Release 11

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 Specification 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.

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.

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 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 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 of code points

In the course of 3GPP's work, it will from time to time be necessary to register code points in protocols maintained by

bodies other than 3GPP, for example, Multipurpose Internet Mail Extensions (MIME) types registered with the Internet

Assigned Numbers Authority (IANA, http://www.iana.org/

Wherever possible, registration of such code points shall be entrusted to the 3GPP Support Team rather than being

performed by an individual delegate. Since 3GPP is not a legally constituted entity, the Support Team shall register

such code points in the name of one of the Organizational Partners on behalf of all the Organizational Partners of 3GPP.

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3GPP TR 21.900: 移动通讯技术标准

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