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Content for  TR 26.801  Word version:  16.0.0

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0  IntroductionWord‑p. 6

The present document investigates on the suitability of 3GPP existing specifications for testing UEs featuring non-traditional earpieces.
UEs featuring non-traditional earpieces may pose challenges for handset mode acoustic testing. For example, a UE may exclusively use a vibrating display to produce sound when operating in handset mode, offering no clearly identifiable centre of an earpiece to position the headset for testing. Additionally, such UE could have its acoustic response affected by the choice of handset positioner mechanism.
The present document documents studies conducted and concludes with a summary of challenges identified and gap analysis of existing 3GPP specifications.

1  ScopeWord‑p. 7

The present document reports on investigations of testing UEs featuring non-traditional earpieces, and identifies related gaps to existing 3GPP specifications and recommended test equipment.

2  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.
TR 21.905: "Vocabulary for 3GPP Specifications".
ITU-T Recommendation P.57 (12/2011): "Artificial ears".
ITU-T Recommendation P.58 (05/2013): "Head and torso simulator for telephonometry".
ITU-T Recommendation P.64 (06/2019): "Determination of sensitivity/frequency characteristics of local telephone Systems".
TS 26.131: "Terminal acoustic characteristics for telephony; Requirements".
TS 26.132: "Speech and video telephony terminal acoustic test specification".

3  Definitions of terms, symbols and abbreviations

3.1  Terms

For the purposes of the present document, the terms given in TR 21.905 and the following apply. A term defined in the present document takes precedence over the definition of the same term, if any, in TR 21.905.

3.2  Symbols


3.3  Abbreviations

For the purposes of the present document, the abbreviations given in TR 21.905 and the following apply. An abbreviation defined in the present document takes precedence over the definition of the same abbreviation, if any, in TR 21.905.
Manufacturer Ear Cap Reference Point
Receive Frequency Response
Receive Loudness Rating

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