ETSI TS 126 132 V15.2.0 (2019-10)

Universal Mobile Telecommunications System (UMTS); LTE; Speech and video telephony terminal acoustic test specification (3GPP TS 26.132 version 15.2.0 Release 15)

RTS/TSGS-0426132vf20

General Information

• Status: Published
• Publication Date: 09-Oct-2019
• Technical Committee: 3GPP SA 4 - Codec
• Current Stage: 12 - Completion
• Completion Date: 10-Oct-2019

Standards Content (Sample)

ETSI TS 126 132 V15.2.0 (2019-10)






TECHNICAL SPECIFICATION
Universal Mobile Telecommunications System (UMTS);
LTE;
Speech and video telephony terminal acoustic test
specification
(3GPP TS 26.132 version 15.2.0 Release 15)

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3GPP TS 26.132 version 15.2.0 Release 15 1 ETSI TS 126 132 V15.2.0 (2019-10)



Reference
RTS/TSGS-0426132vf20
Keywords
LTE,UMTS
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3GPP TS 26.132 version 15.2.0 Release 15 2 ETSI TS 126 132 V15.2.0 (2019-10)
Intellectual Property Rights
Essential patents
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pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found
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Legal Notice
This Technical Specification (TS) has been produced by ETSI 3rd Generation Partnership Project (3GPP).
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ETSI

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3GPP TS 26.132 version 15.2.0 Release 15 3 ETSI TS 126 132 V15.2.0 (2019-10)
Contents
Intellectual Property Rights . 2
Legal Notice . 2
Modal verbs terminology . 2
Foreword . 9
Introduction . 9
1 Scope . 10
2 References . 10
3 Definitions, symbols and abbreviations . 12
3.1 Definitions . 12
3.2 Abbreviations . 12
4 Interfaces . 13
5 Test configurations . 14
5.1 Setup for terminals . 14
5.1.1 Setup for handset terminals . 15
5.1.2 Setup for headset terminals . 15
5.1.3 Setup for hands-free terminals . 16
5.1.3.1 Vehicle-mounted hands-free . 16
5.1.3.2 Desktop hands-free. 17
5.1.3.3 Hand-held hands-free . 17
5.1.3.4 Softphone including speakers and microphone . 18
5.1.3.5 Softphone with separate speakers . 21
5.1.4 Position and calibration of HATS . 25
5.1.5 Test setup for quality in the presence of ambient noise measurements . 25
5.1.5.1 Handset . 25
5.1.5.2 Hand-held hands-free . 26
5.2 Setup of the electrical interfaces . 28
5.2.1 Codec approach and specification. 28
5.2.2 Direct digital processing approach . 29
5.3 Accuracy of test equipment . 30
5.4 Test signals . 31
5.5 Void . 32
5.5.1 Void . 32
5.5.2 Void . 32
6 Test conditions . 32
6.1 Environmental conditions . 32
6.1.1 Handset and headset terminals . 32
6.1.2 Hands-free terminals . 32
6.2 System simulator conditions. 33
7 Narrowband telephony transmission performance test methods . 33
7.1 Applicability . 33
7.2 Overall loss/loudness ratings . 33
7.2.1 General . 33
7.2.2 Connections with handset UE . 34
7.2.2.1 Sending loudness rating (SLR) . 34
7.2.2.2 Receiving loudness rating (RLR) . 34
7.2.2.3 Receiving loudness rating (RLR) in the presence of background noise . 34
7.2.3 Connections with desktop and vehicle-mounted hands-free UE. 35
7.2.3.1 Sending loudness rating (SLR) . 35
7.2.3.2 Receiving Loudness Rating (RLR) . 36
7.2.4 Connections with hand-held hands-free UE . 36
7.2.4.1 Sending loudness rating (SLR) . 36
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3GPP TS 26.132 version 15.2.0 Release 15 4 ETSI TS 126 132 V15.2.0 (2019-10)
7.2.4.2 Receiving loudness rating (RLR) . 36
7.2.5 Connections with headset UE . 37
7.3 Idle channel noise (handset and headset UE) . 37
7.3.1 Sending . 37
7.3.2 Receiving . 38
7.4 Sensitivity/frequency characteristics . 38
7.4.1 Handset and headset UE sending . 38
7.4.2 Handset and headset UE receiving . 38
7.4.3 Desktop and vehicle-mounted hands-free UE sending . 39
7.4.4 Desktop and vehicle-mounted hands-free UE receiving . 39
7.4.5 Hand-held hands-free UE sending . 39
7.4.6 Hand-held hands-free UE receiving . 39
7.5 Sidetone characteristics . 40
7.5.1 Connections with handset UE . 40
7.5.1.1 void . 40
7.5.1.2 Connections with handset UE – HATS method . 40
7.5.2 Headset UE . 40
7.5.3 Hands-free UE (all categories) . 41
7.5.4 Sidetone delay for handset or headset . 41
7.6 Stability loss . 41
7.7 Acoustic echo control . 43
7.7.1 General . 43
7.7.2 Acoustic echo control in a hands-free UE . 43
7.7.3 Acoustic echo control in handset UE . 43
7.7.4 Acoustic echo control in a headset UE . 43
7.8 Distortion . 43
7.8.1 Sending distortion . 43
7.8.2 Receiving . 45
7.9 Void . 46
7.10 Delay . 46
7.10.0 UE Delay Measurement Methodologies . 46
7.10.1 Delay in sending direction (Handset UE) . 46
7.10.1a Delay in sending direction (headset UE) . 47
7.10.2 Delay in receiving direction (handset UE) . 48
7.10.2a Delay in receiving direction (headset UE) . 49
7.10.3 Delay in sending + receiving direction using "echo" method (handset UE) . 49
7.10.3a Delay in sending + receiving direction using "echo" method (headset UE) . 51
7.10.4 Delay and speech quality in conditions with packet arrival time variations and packet loss . 51
7.10.4.1 Delay in sending direction . 51
7.10.4.2 Delay in receiving direction . 51
7.10.4.3 Speech quality loss in conditions with packet arrival time variations and packet loss . 52
7.10.5 UE send clock accuracy . 53
7.10.6 UE receiving with clock skew . 53
7.11 Echo control characteristics . 53
7.11.1 Test set-up and test signals . 53
7.11.2 Test method . 54
7.11.2.1 Signal alignment . 55
7.11.2.2 Signal level computation and frame classification . 55
7.11.2.3 Classification into categories . 55
7.12 Quality (speech quality, noise intrusiveness) in the presence of ambient noise . 55
7.12.1 Handset . 55
7.12.2 Hand-held hands-free . 57
7.13 Jitter buffer management behaviour . 58
7.13.0 General . 58
7.13.1 Delay histogram . 58
7.13.2 Speech quality loss histogram . 59
8 Wideband telephony transmission performance test methods . 60
8.1 Applicability . 60
8.2 Overall loss/loudness ratings . 60
8.2.1 General . 60
8.2.2 Connections with handset UE . 60
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3GPP TS 26.132 version 15.2.0 Release 15 5 ETSI TS 126 132 V15.2.0 (2019-10)
8.2.2.1 Sending loudness rating (SLR) . 60
8.2.2.2 Receiving loudness rating (RLR) . 60
8.2.2.3 Receiving loudness rating (RLR) in the presence of background noise . 61
8.2.3 Connections with desktop and vehicle-mounted hands-free UE. 61
8.2.3.1 Sending loudness rating (SLR) . 62
8.2.3.2 Receiving loudness rating (RLR) . 62
8.2.4 Connections with hand-held hands-free UE . 62
8.2.4.1 Sending loudness rating (SLR) . 62
8.2.4.2 Receiving loudness rating (RLR) . 63
8.2.5 Connections with headset UE . 63
8.3 Idle channel noise (handset and headset UE) . 63
8.3.1 Sending . 63
8.3.2 Receiving . 64
8.4 Sensitivity/frequency characteristics . 64
8.4.1 Handset and headset UE sending . 64
8.4.2 Handset and headset UE receiving . 64
8.4.3 Desktop and vehicle-mounted hands-free UE sending . 65
8.4.4 Desktop and vehicle-mounted hands-free UE receiving . 65
8.4.5 Hand-held hands-free UE sending . 65
8.4.6 Hand-held hands-free UE receiving . 66
8.5 Sidetone characteristics . 66
8.5.1 Connections with handset UE . 66
8.5.2 Headset UE . 66
8.5.3 Hands-free UE (all categories) . 67
8.5.4 Sidetone delay for handset or headset . 67
8.6 Stability loss . 67
8.7 Acoustic echo control . 69
8.7.1 General . 69
8.7.2 Acoustic echo control in a hands-free UE . 69
8.7.3 Acoustic echo control in a handset UE . 69
8.7.4 Acoustic echo control in a headset UE . 69
8.8 Distortion . 69
8.8.1 Sending distortion . 69
8.8.2 Receiving . 71
8.9 Void . 72
8.10 Delay . 72
8.10.0 UE Delay Measurement Methodologies . 72
8.10.1 Delay in sending direction (handset UE) . 73
8.10.1a Delay in sending direction (headset UE) . 73
8.10.2 Delay in receiving direction (handset UE) . 74
8.10.2a Delay in receiving direction (headset UE) . 75
8.10.3 Delay in sending + receiving direction using "echo" method (handset UE) . 75
8.10.3a Delay in sending + receiving direction using "echo" method (headset UE) . 77
8.10.4 Delay and speech quality in conditions with packet arrival time variations and packet loss . 77
8.10.4.1 Delay in sending direction . 77
8.10.4.2 Delay in receiving direction . 77
8.10.4.3 Speech quality loss in conditions
...