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Content for TS 26.565 Word version: 18.0.0

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5 Reference Architecture and Procedures p. 9

5.1 Reference Architecture p. 9

5.1.1 Introduction p. 9

5.1.2 Client Architecture p. 9

5.1.3 End-to-End Architecture p. 10

5.1.4 User Plane Architecture p. 11

5.2 Procedures and Call Flows p. 12

5.2.1 Call flow for Split Rendering instance discovery p. 12

5.2.2 Call flow for Split Rendering session setup p. 14

6 Prerequisites p. 15

6.1 General p. 15

6.2 Pre-requisites on 5G System p. 15

6.3 Pre-requisites on Device APIs and Functionality p. 15

7 Network Support p. 16

7.1 Overview p. 16

7.2 Provisioning p. 16

7.3 Dynamic Policy and Network Assistance p. 16

7.4 Edge Resources p. 16

7.5 Metrics and Consumption Reporting p. 17

8 Split Rendering User Plane p. 17

8.1 General p. 17

8.2 Split Rendering Signalling Protocols p. 17

8.3 Split Rendering Formats for Media and Metadata p. 19

8.3.1 General p. 19

8.3.2 Metadata Formats p. 19

8.3.3 Metadata Data Channel Message Format p. 19

8.4 Split Rendering Formats for Session Setup and Negotiation p. 20

8.4.1 General p. 20

8.4.2 Split Rendering Configuration Format p. 20

8.4.3 Output Format Description p. 23

8.5 Split Rendering Transport Protocols p. 23

9 Split Rendering Client p. 23

9.1 Functionality p. 23

9.2 Client API p. 23

9.3 Split Rendering Metrics p. 25

9.3.1 General p. 25

9.3.2 QoE Metrics Formats p. 25

9.3.3 QoE Metrics reporting protocol p. 28

9.3.4 QoE metrics definition p. 28

9.3.5 Quality metrics reporting p. 35

10 Security and Privacy Aspects p. 37

10.1 Security p. 37

10.2 Privacy p. 37

A Implementation Guidelines p. 38

A.1 Guidelines for Application Developers p. 38

A.2 Guidelines for Split Rendering MSE Implementers p. 38

A.2.1 Guidelines for implementers of the Split Rendering Server p. 38

A.3 Conformance Testing p. 38

B (Normative) IDL Definition of Client API p. 39

C (Normative) Split Rendering Profiles p. 40

C.1 Pixel Streaming Profile p. 40

C.1.1 Introduction p. 40

C.1.2 2D Pixel Streaming Profile p. 40

C.1.2.1 Introduction p. 40

C.1.2.2 SRC Capabilities p. 40

C.1.2.3 SRS Capabilities p. 41

C.1.2.4 Profile identifier p. 41

C.1.3 3D Pixel Streaming Profile p. 41

C.1.3.1 Introduction p. 41

C.1.3.2 SRC Capabilities p. 41

C.1.3.3 SRS Capabilities p. 42

C.1.3.4 Profile identifier p. 43

C.1.4 Description of the Rendering Format for Pixel Streaming Profiles p. 43

C.1.4.1 General p. 43

C.1.4.2 3D Pixel Streaming Profile-specific glTF Extension p. 43

C.1.5 Profile Restrictions and Requirements p. 47

C.2 Adaptive Split Rendering Profile p. 47

C.2.1 Introduction p. 47

C.2.2 Procedures and Call Flows p. 47

C.2.3 Metadata Formats p. 49

C.2.3.1 Split Rendering Configuration Format p. 49

C.2.3.2 Split Adaptation Message Format p. 50

C.2.3.3 State Synchronization Message Format p. 50

C.2.4 SRC Capabilities p. 51

C.2.4.1 Media Capabilities p. 51

C.2.4.2 Metadata Formats p. 52

C.2.4.3 Rendering format description p. 52

C.2.4.4 Scene Processing and Rendering Capabilities p. 52

C.2.5 SRS Capabilities p. 52

C.2.5.1 Media Capabilities p. 52

C.2.5.2 Metadata Capabilities p. 53

C.2.5.3 Scene Processing and Rendering Capabilities p. 53

C.2.6 Profile identifiers p. 53

C.2.7 Extension to Client API Functions p. 53

C.2.8 Implementation Guidelines for Adaptive Split Rendering p. 54

C.2.8.1 General p. 54

C.2.8.2 Guidelines for Rendering Split and Composition p. 54

$ Change history p. 55