Tech-invite 3GPPspace IETFspace

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Content for TR 38.821 Word version: 16.2.0

1… 4… 5… 5.2… 5.2.2… 5.3… 5.4… 6… 6.1.1.2… 6.1.2 6.1.3 6.1.4 6.2… 6.3… 7… 7.3… 8… 8.3… 8.4… 8.7… 9… A… B… C…

7.1 Requirements and key issues 7.2 User plane enhancements 7.2.1 MAC 7.2.2 RLC 7.2.3 PDCP 7.2.4 SDAP
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7 Radio protocol issues and related solutions p. 69

7.1 Requirements and key issues p. 69

7.1.1 Delay p. 69

7.2 User plane enhancements p. 70

7.2.1 MAC p. 70

7.2.1.1 Random Access p. 70

7.2.1.1.1 4-Step RACH Procedure p. 70

7.2.1.1.1.1 RACH capacity evaluation p. 70

7.2.1.1.1.2 4-step RACH enhancements for Non-Terrestrial Networks p. 71

7.2.1.1.2 2-Step RACH Procedure p. 79

7.2.1.1.3 Random access enhancements to address mobility issues p. 79

7.2.1.1.4 Co-existence with different random access capabilities p. 80

7.2.1.2 Discontinuous Reception (DRX) p. 80

7.2.1.2.1 DRX enhancements p. 82

7.2.1.3 Scheduling Request p. 83

7.2.1.4 HARQ p. 83

7.2.1.5 Uplink scheduling p. 84

7.2.1.5.1 Assignment of uplink resources p. 84

7.2.2 RLC p. 85

7.2.2.1 Status Reporting p. 85

7.2.2.2 RLC Sequence Numbers p. 85

7.2.3 PDCP p. 87

7.2.3.1 SDU Discard p. 87

7.2.3.2 Reordering and In-order Delivery p. 87

7.2.3.3 PDCP Sequence Number and Window Size p. 87

7.2.4 SDAP p. 89