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Content for  TR 23.705  Word version:  13.0.0

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5  Key issuesp. 8

6  Solutionsp. 11

6.1  CN-based solutions for RAN user plane congestion managementp. 11

6.1.1  General architectural requirementsp. 11

6.1.2  General description, assumptions and principlesp. 12

6.1.3  High-level operation and proceduresp. 13

6.1.4  RAN congestion detection solutionsp. 14

6.1.5  RAN congestion reporting solutionsp. 15

6.1.5.1  Solution 1.5.1: RAN user plane congestion reporting by GTP-U extensionp. 15

6.1.5.2  Solution 1.5.2: C-plane signalling for RAN user plane congestion reportingp. 20

6.1.5.3  Solution 1.5.3: RPPF based RAN user plane congestion reportingp. 27

6.1.5.4  Solution 1.5.4: Integrated on-path and off-path RAN user plane congestion reportingp. 29

6.1.5.5  Solution 1.5.5: off-path based RAN user plane congestion reportingp. 34

6.1.6  RAN congestion mitigation solutionsp. 38

6.2  RAN-based solutions for RAN user plane congestion managementp. 40

6.3  UE-based solutions for RAN user plane congestion managementp. 54

7  Evaluationp. 56

8  Conclusionsp. 57

A  Combining RAN and CN-based Solutions for RAN user plane congestion management as a deployment optionp. 58

$  Change Historyp. 61


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