Tech-invite 3GPPspace IETFspace

21 22 23 24 25 26 27 28 29 31 32 33 34 35 36 37 38 4‑5x

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…

7.3 Control plane enhancements 7.3.1 Idle mode mobility enhancements 7.3.2 Connected mode mobility enhancements 7.3.3 Paging issue 7.3.4 Radio Link Monitoring 7.3.5 PLMN identities deployment 7.3.6 Ephemeris Data for NTN 7.4 Earth fixed cells vs Earth moving cells
...

7.3 Control plane enhancements p. 89

7.3.1 Idle mode mobility enhancements p. 90

7.3.1.1 General Tracking Area Issues [16] p. 90

7.3.1.2 Moving Tracking Area for NTN LEO, Scenario C2 and D2 [17] p. 91

7.3.1.3 Fixed Tracking Area for NTN LEO, Scenario C2 and D2 [17] p. 91

7.3.1.3.1 Approach 1: For the case when UE location information is unavailable p. 91

7.3.1.3.2 Approach 2: For the case when UE location information is available p. 92

7.3.1.3.3 Tracking Area recommendation p. 92

7.3.1.4 Enhancements to idle/inactive UE mobility procedure p. 92

7.3.1.5 Mobility state estimation mechanism p. 93

7.3.1.6 Using ephemeris information and UE location information p. 93

7.3.1.7 System information broadcast p. 93

7.3.2 Connected mode mobility enhancements p. 93

7.3.2.1 Mobility Challenges for Non-Terrestrial Networks p. 93

7.3.2.1.1 Latency associated with mobility signalling p. 93

7.3.2.1.2 Measurement Validity p. 94

7.3.2.1.3 Cell overlap and reduced signal strength variation p. 95

7.3.2.1.4 Frequent and unavoidable handover p. 95

7.3.2.1.5 Dynamic neighbour cell set p. 96

7.3.2.1.6 Handover for a large number of UEs p. 96

7.3.2.1.7 Impact of Propagation Delay Difference on Measurements p. 98

7.3.2.2 Mobility Enhancements for Non-Terrestrial Networks p. 98

7.3.2.2.1 Enhancements to Measurement Configuration/Reporting p. 98

7.3.2.2.2 Conditional Handover p. 98

7.3.2.2.3 Mobility Configuration p. 100

7.3.2.3 Connected mode mobility for feeder link switch for LEO NTN [18] p. 100

7.3.2.4 Connected mode mobility assumptions p. 100

7.3.3 Paging issue p. 100

7.3.3.1 Paging Capacity p. 100

7.3.3.1.1 Paging capacity of non-multibeam cell p. 101

7.3.3.1.2 Example of calculation p. 101

7.3.4 Radio Link Monitoring p. 103

7.3.5 PLMN identities deployment p. 103

7.3.6 Ephemeris Data for NTN p. 103

7.3.6.1 Representation of Complete Ephemeris Data p. 103

7.3.6.2 Provision and Use of Ephemeris Data p. 104

7.3.6.3 Updating Stored Ephemeris Data p. 105

7.4 Earth fixed cells vs Earth moving cells p. 105