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Content for  TR 24.811  Word version:  17.1.0

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5  Key Issuesp. 12

6  Solutionsp. 18

6.0  Mapping Solutions to Key Issuesp. 18

6.1  Solution #1: Indicating to the UE, via non-3GPP access, the applicability of a disaster condition to the 3GPP access of the same PLMNp. 20

6.2  Solution #2: Notification of Disaster Condition to the UE via Non-3GPP Accessp. 21

6.3  Solution #3: Notification of Disaster Condition to the UE by RAN sharingp. 26

6.4  Solution #4: Disaster condition information delivered to UE via broadcastp. 27

6.5  Solution #5p. 28

6.6  Solution #6: O&M-based solution for Key Issue #2p. 28

6.7  Solution #7p. 30

6.8  Solution #8p. 30

6.9  Solution #9: Notification of applicability on Disaster Condition to PLMNs without Disaster Condition by RAN sharingp. 32

6.10  Solution #10: Indication of accessibility from other PLMNs without Disaster Condition to the UE by RAN sharingp. 33

6.11  Solution #11: DRS-supported PLMN listp. 33

6.12  Solution #12: Broadcast of disaster roaming indicationp. 34

6.13  Solution #13p. 35

6.14  Solution #14p. 36

6.15  Solution #15: List if PLMNs to be used while in Disaster conditionp. 37

6.16  Solution #16: Solution for indication of accessibility from other PLMNs without Disaster Condition to the UE and for prevention of signalling overload in PLMNs without Disaster Condition using Access Identitiesp. 38

6.17  Solution #17: Confining the service area of an inbound disaster roaming UE to the area of the disaster conditionp. 40

6.18  Solution #18: Registration to the roaming PLMN without Disaster Condition in case of Disaster Condition via shared RANp. 41

6.19  Solution #19p. 41

6.20  Solution #20p. 42

6.21  Solution #21: Solution for PLMN selection when a "Disaster Condition" appliesp. 44

6.22  Solution #22: Considerations for PLMN selection when a "Disaster Condition" appliesp. 46

6.23  Solution #23p. 47

6.24  Solution #24p. 48

6.25  Solution #25p. 49

6.26  Solution #26: PLMN selection base on DRS-Supported PLMN listp. 50

6.27  Solution #27: Indicating to the UE, via non-3GPP access, the end of a disaster condition that was applicable to the 3GPP access of the same PLMNp. 51

6.28  Solution #28: Solution for notification that Disaster Condition is no longer applicable to the UEsp. 52

6.29  Solution #29: O&M-based solution for Key Issue #6p. 54

6.30  Solution #30: UE-based solution for Key Issue #6p. 56

6.31  Solution #31p. 58

6.32  Solution #32: The quick return to PLMN with Disaster Conditionp. 59

6.33  Solution #33p. 60

6.34  Solution #34p. 60

6.35  Solution #35: Notification that Disaster Condition is no longer applicable to the UEs by stopping RAN sharingp. 61

6.36  Solution #36p. 62

6.37  Solution #37: Enabling a PLMN without Disaster Condition to efficiently prevent Disaster Inbound Roamers from attempting registration on the PLMN when the PLMN can no longer accept Disaster Inbound Roamers due to congestionp. 62

6.38  Solution #38: Prevention of signalling overload via barring factor for Access Identity 3p. 63

6.39  Solution #39: Solution for prevention of signalling overload in PLMNs without Disaster Condition by providing disaster roaming assistance information to distribute roamers, and congestion mitigationp. 64

6.40  Solution #40: Enhancements to UAC barring information to prevent congestion in disaster roaming PLMNp. 66

6.41  Recommended PLMN without Disaster Conditionp. 67

6.42  Solution #42p. 68

6.43  Solution #43: List if PLMNs to be used while in Disaster conditionp. 69

6.44  Solution #44: Staggering of returning UEs trying to register in the PLMN previously with Disaster Conditionp. 70

6.45  Solution #45: Prevention of signalling overload by returning UEsp. 71

6.46  Solution #46: Solution for prevention of signalling overload by returning UEs in PLMN previously with Disaster Conditionp. 71

6.47  Solution #47: Network controlled return of UEs at the end of disaster conditionp. 73

6.48  Solution #48p. 74

6.49  Solution #49: Minimum wait timerp. 75

6.50  Solution #50: Providing information to the RAN of PLMN Ap. 75

6.51  Solution #51: PLMN selection when shared RAN is available in case of disaster conditionp. 76

6.52  Solution #52: New solution to KI#4: Using the existing mobility restriction list to confine the UE service area in disaster roaming PLMN to the area of the disaster conditionp. 76

6.53  Solution #53: Staggering of UEs trying to register in the PLMN without Disaster Conditionp. 77

6.54  Solution #54: Preventing 5GSM-level congestion on a PLMN without a disaster conditionp. 78

6.55  Solution #55p. 80

6.56  Solution #56: Solution for manual PLMN selection when a "Disaster Condition" appliesp. 80

6.57  Solution #57: Registration to PLMN providing Disaster Roaming service and to PLMN with Disaster Condition when no roaming interfaces are in placep. 81

6.58  Solution #58: Transitioning to Connected Mode over non-3GPP access by a UE in Idle Modep. 84

6.59  Solution #59p. 84

6.60  Solution #60: Manual PLMN selection during disaster conditionp. 85

7  Evaluationsp. 86

8  Conclusionsp. 106

$  Change historyp. 112


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