Content for TR 26.929 Word version: 18.0.0
2 References
3 Definitions of terms, symbols and abbreviations
4 VR QoE overview
5 Use case for VR QoE
6 VR QoE reference model under consideration
7 VR interaction metrics
8 VR content impact on QoE
9 Transmission impact on VR QoE
10 VR device impact on QoE
11 VR QoE configuration and reporting
12 Conclusions
A MPEG-I part-6 immersive media metrics
$ Change history
2 References p. 6
3 Definitions of terms, symbols and abbreviations p. 7
4 VR QoE overview p. 8
4.1 Introduction p. 8
4.2 VR QoE metrics evolution p. 8
4.3 Viewport-related QoE aspects p. 9
4.3.1 Introduction p. 9
4.3.2 Single stream region-independent coding p. 9
4.3.3 Single stream region-dependent encoding p. 9
4.3.4 Multiple stream region-dependent encoding p. 10
4.3.5 Region-based encoding, simple head movement p. 11
4.3.6 Region-based encoding, complex head movements p. 12
4.3.7 Summary p. 12
4.4 Viewport-related information flow p. 12
5 Use case for VR QoE p. 15
5.1 Introduction p. 15
5.2 3DoF VR Streaming p. 15
6 VR QoE reference model under consideration p. 15
6.1 General description p. 15
6.2 Observation point 1 p. 16
6.3 Observation point 2 p. 16
6.4 Observation point 3 p. 17
6.5 Observation point 4 p. 17
6.6 Observation point 5 p. 17
7 VR interaction metrics p. 18
7.1 Introduction p. 18
7.2 VR interaction latency p. 18
8 VR content impact on QoE p. 20
8.1 Introduction p. 20
8.2 Impact of Content Complexity on QoE p. 20
8.2.1 Introduction p. 20
8.2.2 Preparation of datasets p. 21
8.2.3 Technical setup and equipment p. 21
8.2.4 Test Method p. 21
8.2.5 Results p. 21
8.2.5.1 Audio-visual quality of the entire VR session p. 21
8.2.5.2 Assessment of simulator sickness p. 22
8.2.6 Summary p. 24
9 Transmission impact on VR QoE p. 24
9.1 Introduction p. 24
9.2 QoE metrics relevant with network transmission p. 24
9.2.1 Average Throughput p. 24
9.2.2 Buffer Level p. 24
9.2.3 Play List p. 24
9.2.4 Presentation Delay p. 25
9.2.4.1 Introduction p. 25
9.2.4.2 Ignore viewport and encoding quality p. 25
9.2.4.3 Consider viewport but not encoding quality p. 25
9.2.4.4 Consider viewport and encoding quality p. 26
9.2.4.5 More advanced delay measurements p. 27
9.2.4.6 Aggregation p. 27
9.2.4.7 Metric definition p. 27
9.2.4.8 Metric examples p. 27
10 VR device impact on QoE p. 30
10.1 Introduction p. 30
10.2 QoE metrics relevant with VR device p. 30
10.2.1 Field of View p. 30
10.2.2 Resolution p. 30
10.2.3 Refresh Rate p. 30
10.2.4 Decoder capability p. 30
10.2.5 Detailed QoE metrics p. 31
11 VR QoE configuration and reporting p. 31
11.1 Introduction p. 31
11.2 VR metrics p. 31
12 Conclusions p. 32
A MPEG-I part-6 immersive media metrics p. 33
$ Change history p. 37
