US 12,425,951 B2
Method for managing prohibited PLMN list during disaster roaming, and apparatus supporting same
Sangmin Park, Seoul (KR); Sungduck Chun, Seoul (KR); and Hyunsook Kim, Seoul (KR)
Assigned to LG Electronics Inc., Seoul (KR)
Appl. No. 18/005,463
Filed by LG Electronics Inc., Seoul (KR)
PCT Filed Jul. 9, 2021, PCT No. PCT/KR2021/008821
§ 371(c)(1), (2) Date Jan. 13, 2023,
PCT Pub. No. WO2022/014973, PCT Pub. Date Jan. 20, 2022.
Claims priority of application No. 10-2020-0086317 (KR), filed on Jul. 13, 2020.
Prior Publication US 2023/0276342 A1, Aug. 31, 2023
Int. Cl. H04W 48/02 (2009.01); H04W 4/90 (2018.01); H04W 8/02 (2009.01); H04W 48/16 (2009.01); H04W 48/18 (2009.01); H04W 84/04 (2009.01)
CPC H04W 48/02 (2013.01) [H04W 4/90 (2018.02); H04W 8/02 (2013.01); H04W 48/16 (2013.01); H04W 48/18 (2013.01); H04W 84/042 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A method performed by a user equipment (UE) operating in a wireless communication system, the method comprising:
determining that there is no available Public Land Mobile Network (PLMN) other than PLMNs included in a first list;
determining whether the PLMNs included in the first list can provide disaster roaming service;
including in a second list at least one PLMN capable of providing the disaster roaming service from among the PLMNs included in the first list; and
based on a disaster condition applying in a Home PLMN (HPLMN): i) performing PLMN selection with respect to the at least one PLMN included in the second list, and ii) selecting a disaster roaming PLMN from among the at least one PLMN and receiving the disaster roaming service from the disaster roaming PLMN.