7.4.2 Handset and headset UE receiving

26.1313GPPRelease 17RequirementsTerminal acoustic characteristics for telephonyTS

7.4.2.1 Handset UE receiving

The sensitivity/frequency characteristics shall be as follows:

The receiving sensitivity frequency response, measured either from the digital interface to the DRP with diffuse-field correction or from the SS audio input (analogue or digital input of the reference speech encoder of the SS) to the DRP with diffuse-field correction, shall be within a mask, which can be drawn with straight lines between the breaking points in table 19 on a logarithmic (frequency) – linear (dB sensitivity) scale.

Table 19: Handset receiving sensitivity/frequency requirement mask

Frequency (Hz)

Upper limit (dB)

Lower limit (dB)

100

5

200

5

-8

250

5

-5

5000

5

-5

12500

5

-11

16000

5

NOTE: All sensitivity values are expressed in dB on an arbitrary scale.

It is desired as a performance objective that the receiving sensitivity/frequency response be within the mask which can be drawn with straight lines between the breaking points in table 20.

Table 20: Handset receiving sensitivity/frequency performance objective mask

Frequency (Hz)

Upper limit (dB)

Lower limit (dB)

100

4

200

4

-4

250

4

-4

5000

4

-4

12500

4

-7

16000

4

NOTE: All sensitivity values are expressed in dB on an arbitrary scale.

Figure 16: Handset receiving sensitivity/frequency masks. The frequency response of the EVS codec operating as specified in TS 26.132 (super-wideband 24,4kbit/s, using the specified P.501 speech test signal), is plotted for reference, normalized to 0dB at 1kHz.

A UE operating in super-wideband mode shall pass the super-wideband requirements (i.e. when measured according to in 1/3rd octaves) as specified in Table 19, and shall also pass the wideband sensitivity/frequency characteristics requirements in the wideband range using the wideband measurement (i.e. measured in 1/12th octaves) as specified in Table 10.

Compliance shall be checked by the relevant test described in TS 26.132.

7.4.2.2 Headset UE receiving

The sensitivity/frequency characteristics shall be as follows:

The receiving sensitivity frequency response, measured either from the digital interface to the DRP with diffuse-field correction or from the SS audio input (analogue or digital input of the reference speech encoder of the SS) to the DRP with diffuse-field correction, shall be within a mask, which can be drawn with straight lines between the breaking points in table 21 on a logarithmic (frequency) – linear (dB sensitivity) scale.

Table 21: Headset receiving sensitivity/frequency requirement mask

Frequency (Hz)

Upper limit (dB)

Lower limit (dB)

100

[TBD]

[TBD]

200

250

5000

12500

16000

NOTE: All sensitivity values are expressed in dB on an arbitrary scale.

It is recommended as a performance objective that the receiving sensitivity/frequency response be within the mask which can be drawn with straight lines between the breaking points in table 22.

Table 22: Headset receiving sensitivity/frequency performance objective mask

Frequency (Hz)

Upper limit (dB)

Lower limit (dB)

100

[3]

200

[3]

[-6]

250

[3]

[-3]

5000

[3]

[-3]

12500

[3]

[-6]

16000

[3]

NOTE 1: All sensitivity values are expressed in dB on an arbitrary scale.

NOTE 2: Values within [] are provisional and expected to be confirmed, revised or removed based on future studies.

TBD

Figure 17: Headset receiving sensitivity/frequency masks

Compliance shall be checked by the relevant test described in TS 26.132.