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Content for TR 26.926 Word version: 18.2.0

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5.1 Introduction 5.2 End-to-end Modelling of XR Traffic 5.2.1 Architecture and System Model 5.2.2 Interfaces and Traces 5.2.2.1 Introduction 5.2.2.2 Overview of Traces 5.2.3 Benefits and Limitations 5.3 P-Traces 5.4 5G System Model and Simulation 5.4.1 5G System Model 5.4.2 Core Network Model 5.4.3 RAN Model 5.4.4 Test Channels 5.5 Content Modelling 5.5.1 Introduction 5.5.2 V-Trace Generation 5.5.3 V-Trace Format 5.5.4 Other media types 5.6 Media Coding and Decoding Modelling 5.6.1 General 5.6.2 Video Coding and Decoding 5.6.3 Video Coding and Decoding Configuration 5.6.4 S-Trace and V'-Trace Format 5.6.5 Other media types 5.7 Content Delivery Modelling 5.7.1 General 5.7.2 Content Delivery Modelling for ADU Fragmentation 5.7.3 Content Delivery Modelling for Retransmission 5.7.4 Content Delivery Modelling for Application Layer FEC 5.7.5 S'-Trace Format 5.8 Quality Metrics and Computation 5.8.1 General 5.8.2 Test Channels 5.9 Uplink Modeling 5.9.1 Considerations 5.9.2 Pose Uplink Model
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5 General Design and Modelling p. 12

5.1 Introduction p. 12

5.2 End-to-end Modelling of XR Traffic p. 13

5.2.1 Architecture and System Model p. 13

5.2.2 Interfaces and Traces p. 14

5.2.2.1 Introduction p. 14

5.2.2.2 Overview of Traces p. 15

5.2.3 Benefits and Limitations p. 15

5.3 P-Traces p. 15

5.4 5G System Model and Simulation p. 16

5.4.1 5G System Model p. 16

5.4.2 Core Network Model p. 18

5.4.3 RAN Model p. 19

5.4.4 Test Channels p. 20

5.5 Content Modelling p. 20

5.5.1 Introduction p. 20

5.5.2 V-Trace Generation p. 21

5.5.3 V-Trace Format p. 21

5.5.4 Other media types p. 22

5.6 Media Coding and Decoding Modelling p. 23

5.6.1 General p. 23

5.6.2 Video Coding and Decoding p. 23

5.6.3 Video Coding and Decoding Configuration p. 25

5.6.4 S-Trace and V'-Trace Format p. 26

5.6.5 Other media types p. 27

5.7 Content Delivery Modelling p. 27

5.7.1 General p. 27

5.7.2 Content Delivery Modelling for ADU Fragmentation p. 28

5.7.3 Content Delivery Modelling for Retransmission p. 30

5.7.4 Content Delivery Modelling for Application Layer FEC p. 30

5.7.5 S'-Trace Format p. 32

5.8 Quality Metrics and Computation p. 32

5.8.1 General p. 32

5.8.2 Test Channels p. 34

5.9 Uplink Modeling p. 35

5.9.1 Considerations p. 35

5.9.2 Pose Uplink Model p. 35