TR 26.926
Traffic Models and Quality Evaluation Methods for Media and XR Services in 5G Systems
V19.0.0 (PDF)
2025/03 84 p.
V18.2.0
2024/03 88 p.
- Rapporteur:
- Dr. Stockhammer, Thomas
Qualcomm CDMA Technologies
essential Table of Contents for TR 26.926 Word version: 19.0.0
each title, in the "available" or "not available yet" area, links to the equivalent title in the CONTENT
List of Figures and Tables
| Figure 5.1-1 | Simplified Architecture for XR end-to-end services |
| Figure 5.2.1-1 | General architecture and system model for XR Traffic |
| Table 5.3-1 | P-Trace format |
| Figure 5.4.1-1 | The principle for classification and User Plane marking for QoS Flows and mapping to AN Resources (see TS 23.501, Figure 5.7.1.5-1) |
| Figure 5.4.2-1 | Core Network Model |
| Figure 5.4.2-2 | Packet size and latency addition in core network model |
| Figure 5.4.3-1 | Packet Radio Network Model |
| Figure 5.5.1-1 | Content Modelling Approach |
| Figure 5.5.2-1 | V-Trace Generation |
| Table 5.5.3-1 | V-Trace Format |
| Figure 5.6.2-1 | Media Coding and Decoding Modelling |
| Table 5.6.3-1 | Example video encoding configuration |
| Table 5.6.4-1 | S-Trace Format |
| Table 5.6.4-2 | Frame-related metadata from encoding |
| Table 5.6.4-3 | V'-Trace Format |
| Figure 5.7.1-1 | Content Delivery Modelling |
| Figure 5.7.2-1 | Packet sizes and delays |
| Table 5.7.2-1 | Example Content Delivery sender configuration |
| Table 5.7.2-2 | Example Content Delivery receiver configuration |
| Figure 5.7.4-1 | Packet Generation for Application Layer FEC |
| Table 5.7.4-1 | Example Content Delivery sender configuration for Application Layer FEC |
| Table 5.7.5-1 | S'-Trace Format |
| Table 5.8.1-1 | Q-Trace Format |
| Figure 5.8.1-1 | Packet sizes and delays |
| Figure 6.2.1-1 | Split Rendering with Asynchronous Time Warping (ATW) Correction |
| Figure 6.3-1 | XR Split Rendering Simulation System |
| Table 6.4-1 | XR Split Rendering Recommended Configurations |
| Figure 6.5.1.2-1 | S-Trace Statistics for VR2-1 |
| Figure 6.5.1.3-1 | S-Trace Statistics for initial VR2-7 |
| Figure 6.5.1.3-2 | P-Trace Statistics for initial VR2-7 |
| Figure 6.5.2-1 | VR2-3 Statistics |
| Figure 6.5.2-2 | VR2-4 Statistics |
| Table 6.5.3.1-1 | Statistical parameter values for dual eye buffer frame size (TR 38.838) |
| Table 6.5.3.1-2 | Frame size distribution deriving from the P-trace files |
| Figure 6.5.3.1-1 | The statistic of packet size by using the P-trace data from SA4 |
| Table 6.5.3.2-1 | Jitter distribution deriving from the P-trace files |
| Figure 6.5.3.2-1 | The statistic of jitter from the P-trace files |
| Table 6.6-1 | Traces and configuration for P-file generation |
| Table 6.6-2 | Traces and configuration for P-file generation |
| Figure 7.2.1-1 | Cloud Gaming Reference Architecture |
| Table 7.2.2.7-1 | Online Gaming source properties |
| Figure 7.3-1 | Cloud Gaming Simulation System |
| Table 7.4-1 | Online Gaming source properties |
| Figure 8.2.1-1 | AR Conversational reference system as XR distributed compute system |
| Figure 8.2.1-2 | AR Conversational reference system |
| Figure 8.2.2-1 | Content formats for AR conversational |
| Table 8.2.2-1 | Considered content formats and properties |
| Figure 9.1-1 | Viewport-dependent Streaming defined in TR 26.928 |
| Figure 9.2.5-1 | Overview of latency factors in a Tiled VR Streaming system |
| Figure 9.2.5-2 | Caching Process for VR Streaming |
| Table A.2.1-1 | Bitrates and resulting quality for different configurations |
| Table A.2.1-2 | Bitrate decrease per CRF/QP increase |
| Table A.2.1-3 | Bitrate decrease per CRF/QP increase |
| Table A.2.1-4 | Bitrate increase for 60 fps vs. 30fps |
| Listing A.2.4-1 | Content Encoding per frame |
| Listing A.2.5-1 | Rate Control Modelling |
| Figure A.3.1-1 | Content Delivery, decoding and quality modeling |
| Figure A.3.1-2 | Potential evaluation graph for different configurations |
| Listing A.3.3-1 | Quality Measurement Algorithm |
| Figure A.3.4.1-1 | Video Decoding Model |
| Figure A.3.4.3-1 | Probability for wrong CU propagation inter |
| Figure A.3.4.3-2 | Probability for wrong CU propagation intra |
| Figure B.2-1 | Illustration of Traffic model |
| Figure B.2-2 | Statistics for different games and platforms: Throughput, packet size, burst length |
| Figure B.2-3 | Statistics for different games and platforms: Inter arrival times (IAT), jitter, burst IAT |
| Figure B.3.2-1 | recommended parameters for cloud-gaming traffic |