Tech-invite 3GPPspace IETFspace

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Content for TR 38.825 Word version: 16.0.0

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2 References p. 6

3 Definitions, symbols and abbreviations p. 7

3.1 Definitions p. 7

3.2 Abbreviations p. 7

4 Data duplication and multi-connectivity enhancements p. 8

4.1 General p. 8

4.2 Enhancements to PDCP duplication p. 8

4.2.1 Protocol aspects p. 8

4.2.2 Radio access network aspects p. 9

4.3 Higher layer multi-connectivity p. 9

4.3.1 Layer 2/3 protocol aspects p. 9

4.3.2 Radio access network aspects p. 9

4.3.2.1 Redundant user plane paths based on dual connectivity p. 9

4.3.2.1.1 Overview p. 9

4.3.2.1.2 Impacts on RAN p. 10

4.3.2.2 Multiple UEs per device for user plane p. 10

4.3.2.2.1 Overview p. 10

4.3.2.2.2 Impacts on RAN p. 10

4.3.2.3 Supporting redundant data transmission via single UPF and two RAN nodes p. 11

4.3.2.3.1 Overview p. 11

4.3.2.3.2 Impacts on RAN p. 11

4.3.2.4 Supporting redundant data transmission via single UPF and single RAN node p. 11

4.3.2.4.1 Overview p. 11

4.3.2.4.2 Impacts on RAN p. 12

4.3.2.5 Support replication framework in 3GPP System p. 12

4.3.2.5.1 Overview p. 12

4.3.2.5.2 Impacts on RAN p. 12

5 Intra-UE prioritization/multiplexing p. 12

5.1 General p. 12

5.2 Scenarios and use cases p. 13

5.2.1 Overview p. 13

5.2.2 Scenario 1: Intra-UE DL Prioritization p. 13

5.2.3 Scenario 2: Intra-UE UL Prioritization: Resource Conflict between Configured and Dynamic Grants p. 13

5.2.4 Scenario 3: Intra-UE UL Prioritization: Resource Conflict between Dynamic Grants p. 13

5.2.5 Scenario 4: Intra-UE UL Prioritization - Resource Conflict between Control Information and Control Information p. 13

5.2.6 Scenario 5: Intra-UE UL Prioritization - Resource Conflict between Control Information and Data p. 13

5.3 Solutions for uplink intra-UE prioritization/multiplexing p. 13

5.3.1 Solutions for resource collision involving data only p. 13

5.3.2 Solutions for resource collision involving control information p. 14

5.3.3 Physical layer aspects p. 14

5.4 Solutions for downlink intra-UE prioritization/multiplexing p. 14

6 Time Sensitive Networking p. 15

6.1 General p. 15

6.2 TSN use cases, scenarios and architectures p. 15

6.3 TSN performance evaluation p. 15

6.3.1 Requirements p. 15

6.3.2 Physical layer aspects p. 16

6.3.2.1 General p. 16

6.3.2.2 Latency p. 16

6.3.2.3 Reliability p. 19

6.3.2.4 Synchronization accuracy p. 20

6.3.3 Protocol aspects p. 22

6.3.4 Radio access network aspects p. 22

6.3.4.1 Time synchronization accuracy p. 22

6.3.4.2 Latency on network interfaces p. 22

6.3.5 Overall synchronization accuracy analysis p. 22

6.4 Accurate reference timing provisioning p. 23

6.4.1 General p. 23

6.4.2 Realizing accurate reference timing delivery p. 23

6.5 QoS and scheduling enhancements p. 23

6.5.1 Overview of traffic characteristics in TSN use cases p. 23

6.5.2 Issues and solutions related to TSN traffic support in NR p. 23

6.6 Ethernet header compression p. 26

6.6.1 Scenario and benefits assessment p. 26

6.6.1.1 General p. 26

6.6.1.2 Ethernet header fields p. 26

6.6.1.3 Padding p. 27

6.6.1.4 Benefit assessment p. 27

6.6.1.5 Industrial communication protocols using Ethernet p. 28

6.6.2 Potential solutions p. 28

6.6.2.1 Protocol layer p. 28

6.6.2.3 Relation to IP header compression p. 29

6.6.2.4 Design principles p. 29

6.6.2.5 Solution approaches p. 30

7 Conclusions p. 30

$ Change History p. 33