6.10 Sending performance in the presence of ambient noise

26.1313GPPRelease 17RequirementsTerminal acoustic characteristics for telephonyTS

6.10.1 General

For sending, in handset mode, the UE shall reduce the ambient noise picked up by the microphone(s) without significantly degrading the quality of the speech signal.

6.10.2 Connections with handset UE

The UE shall comply with the following requirements:

S-MOS-LQOw

– The average of S-MOS-LQOw scores across all test conditions shall be ≥ 3.0

– As a performance objective, the average of the S-MOS-LQOw scores across all test conditions should be ≥ 3.5

N-MOS-LQOw

– The average of the N-MOS-LQOw scores across all test conditions shall be ≥ 2.3

– As a performance objective, the average of N-MOS-LQOw scores across all test conditions should be ≥ 3.0

G-MOS-LQOw

– No requirement.

Compliance shall be checked by the relevant tests described in 3GPP TS 26.132.

6.10.3 Connections with Handheld hands-free UE

It is recommended that the UE meets the following performance objectives:

S-MOS-LQOw

– The average of S-MOS-LQOw scores across all five test conditions should be ≥ 3.4

N-MOS-LQOw

– The average of N-MOS-LQOw scores across all test conditions should be ≥ 2.3

G-MOS-LQOw

– No performance objective.

Compliance shall be checked by the relevant tests described in 3GPP TS 26.132.

6.10.4 Connections with electrical interface UE

The UE shall comply with the following requirements:

S-MOS-LQOn

– The average of S-MOS-LQOn scores across all test conditions shall be ≥ 3.0

– As a performance objective, the average of the S-MOS-LQOn scores across all test conditions should be ≥ 3.5

N-MOS-LQOn

– The average of the N-MOS-LQOn scores across all test conditions shall be ≥ 2.3

– As a performance objective, the average of N-MOS-LQOn scores across all test conditions should be ≥ 3.0

G-MOS-LQOn

– No performance objective.

Compliance shall be checked by the relevant tests described in 3GPP TS 26.132.