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Content for  TR 21.801  Word version:  16.2.0

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6.3  Technical normative elementsWord‑p. 21

6.3.1Void

6.3.2Void

6.3.3  Requirements

This element is only applicable to TSs. It shall contain the following:
  1. all characteristics relevant to the aspect(s) of the product(s), process(es) or service(s) covered by the 3GPP TS or 3GPP TR, either explicitly or by reference;
  2. the required limiting values of quantifiable characteristics.
For test methods see clause 6.3.5.
A clear distinction shall be made between requirements, statements and recommendations.
Contractual requirements concerning claims, guarantees, covering of expenses, etc. shall not be included.
In some product 3GPP TSs or 3GPP TRs, it may be necessary to specify that the product shall be accompanied by warning notices or by instructions to the user or installer, and to specify their nature. On the other hand, requirements concerning use or installation as such shall be included in a separate part or a separate 3GPP TS or 3GPP TR since they are not requirements applicable to the product itself.
3GPP TSs or 3GPP TRs listing characteristics for which suppliers are required to state values that are not specified by the 3GPP TSPP or 3G TR itself shall specify how such values are to be measured and stated.
For endorsement of documents from other standards organizations, see Annex J.
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6.3.3a  Technical analysis

This element is option and may appear in both TSs and TRs. It shall not contain any normative requirements.
It gives technical analysis of investigations, for example, of a feasibility study, and conclusions and recommendations. It may also contain guidance on the use or interpretation of TSs or external normative material without in itself being normative.
In a TS, requirements and technical analysis clauses may be freely intermixed to provide a logical structure. The language (modal verbs) suffices to distinguish between normative and informative material.
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6.3.4  SamplingWord‑p. 22
This optional element specifies the conditions and methods of sampling, as well as the method for the preservation of the sample(s). This element may appear at the beginning of test methods.

6.3.5  Test methods

This optional element gives all the instructions concerning the procedure for determining the values of characteristics, or for checking conformity to stated requirements, and for ensuring the reproducibility of the results. If appropriate, tests shall be identified to indicate whether they are type tests, routine tests, sampling tests and so on.
Instructions relating to test methods may be subdivided in the following order (where appropriate):
  1. principle;
  2. apparatus;
  3. preparation and preservation of test samples and test pieces;
  4. procedure;
  5. test report.
Test methods may be presented as separate clauses, or be incorporated in requirements, or be presented as annexes (see clause 6.3.8) or as separate parts (see clause 5.2.1). A test method shall be prepared as a separate 3GPP TS if it is likely to be referred to in a number of other 3GPP TSs.
The need for specification of test methods shall be evaluated on a case by case basis.
A test specification enables verification that products designed to a standard conform to its requirements. When writing a 3GPP TS you should consider the need for an accompanying test specification.
Every requirement of a 3GPP TS specifying a product (equipment, system or service) needs to be testable, and such requirements need to be clearly distinguishable from statements of fact or of supposition.
EXAMPLE:
Comparing the two sentences below:
  • "On receiving a START CALL message, the terminal shall respond by sending an ACKNOWLEDGE message within a delay of t1."
  • "On receiving a START CALL primitive, the layer 3 protocol of the terminal shall move to state CALL ACTIVATED and shall start timer t2."
It is clear that conformance to the first requirement can be verified by external stimulus and observation, whereas the second puts demands on a conceptual model which cannot be explicitly tested. Whilst requirements of the latter sort are useful – even essential – for describing operational details, the essential behavioural characteristics (normative provisions) are given by requirements of the type of the former, and only these are verifiable.
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6.3.6  Classification and designation

Void.

6.3.7  Marking, labelling and packaging

Void.

6.3.8Void

6.3a  Supplementary normative elementsWord‑p. 23

6.3a.1  Normative annexes

For reasons of convenience it may be decided to place some part of the normative text in an annex.
Normative annexes contain provisions to which it is necessary to conform in order to be able to claim compliance with the 3GPP TS. Their status shall be indicated in the heading of the annex (see clause 5.2.6).
Normative annexes shall not appear in 3GPP TRs.

6.4  Supplementary informative elements

6.4.1  Informative annexes

For reasons of convenience it may be decided to place some part of the informative text in an annex.
Informative annexes give additional information intended to assist the understanding or use of the 3GPP TS (or 3GPP TR) and shall not contain provisions to which it is necessary to conform in order to be able to claim compliance with the 3GPP TS. Their presence is optional and their status shall be indicated in the heading of the annex (see clause 5.2.6).
All annexes in 3GPP TRs are "informative" since 3GPP TRs cannot contain normative provisions. Therefore, the word "informative" shall not appear in the title line of annexes in 3GPP TRs.
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6.4.2  Bibliography

The Bibliography identifies documents which are not explicitly cited in the body of the 3GPP TS or 3GPP TR.
Format references as described in clause 6.2.2.

6.4.3  Index

  • Format the index in a section having two columns separated by 0,5 cm using the field {INDEX \e "→" \c "2"}.
  • 6.4.4  Change history

    A history box is provided by the 3GPP Support Team as the final element in a 3GPP TS or 3GPP TR and shows the major milestones in the life of a document. See also clause H.6.

    6.5  Other informative elements

    6.5.1  Notes and examples integrated in the text

    Notes and examples integrated in the text of a 3GPP TS or 3GPP TR shall only be used for giving additional information intended to assist the understanding or use of the 3GPP TS or 3GPP TR. They shall not contain provisions to which it is necessary to conform in order to be able to claim compliance with a 3G TS.
    Notes and examples should preferably be placed at the end of the clause, or after the paragraph to which they refer.
    A single note in a clause shall be preceded by "NOTE:", placed at the beginning of the first line of the text of the note. When several notes occur within the same element (e.g. subclause), they shall be designated "NOTE 1:", "NOTE 2:", "NOTE 3:", etc. (see also clause 5.2.1A).
    The word NOTE shall appear in upper case.
    • Use the NW or NO style.
    • Separate NOTE: from the text of the note with a tab.
    A single example in a clause shall be preceded by "EXAMPLE:", placed at the beginning of the first line of the text of the example. When several examples occur within the same element (e.g. clause), they shall be designated "EXAMPLE 1:", "EXAMPLE 2:", "EXAMPLE 3:", etc. (see also clause 5.2.1A).
    When there is a danger that it might not be clear where the example ends and the normal text continues, then the end of the example may be designated by "END of EXAMPLE".
    The word EXAMPLE shall appear in upper case.
    • Use the EX style.
    • Separate EXAMPLE: from the text of the example with a tab.
    EXAMPLE 1:
    NOTE 1: Note text formatted with the NW style will be formatted without a space after the paragraph.
    NOTE 2: Note text formatted with the NO style will be formatted with a space after the paragraph.
    END of EXAMPLE 1
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    6.5.2  Footnotes to the textWord‑p. 24
    Footnotes shall not be used in 3GPP TSs or 3GPP TRs.


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