US 11,943,732 B2
Method for allowing registration to network in wireless communication system, and device therefor
Sungduck Chun, Seoul (KR)
Assigned to LG ELECTRONICS INC., Seoul (KR)
Appl. No. 17/420,906
Filed by LG ELECTRONICS INC., Seoul (KR)
PCT Filed Jan. 6, 2020, PCT No. PCT/KR2020/000214
§ 371(c)(1), (2) Date Jul. 6, 2021,
PCT Pub. No. WO2020/141964, PCT Pub. Date Jul. 9, 2020.
Claims priority of application No. 10-2019-0001413 (KR), filed on Jan. 4, 2019; and application No. 10-2019-0037743 (KR), filed on Apr. 1, 2019.
Prior Publication US 2022/0070815 A1, Mar. 3, 2022
Int. Cl. H04W 60/04 (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 60/04 (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)] 6 Claims
OG exemplary drawing
 
1. A method performed by a user equipment (UE) in a wireless communication system, the method comprising:
selecting a public land mobile network (PLMN), based on at least one allowable PLMN which is not in a list of forbidden PLMNs;
determining whether an access to the PLMN is allowed based on an access identity related to an access control;
based on that the access to the PLMN is determined to be allowed, transmitting, to the PLMN, a registration request message; and
receiving, from the PLMN, a response message for the registration request message,
wherein, based on that there is no available PLMN except for at least one PLMN in the list of forbidden PLMNs and based on that the at least one PLMN in the list of forbidden PLMNs is related to a disaster roaming:
the PLMN is selected based on the at least one PLMN in the list of forbidden PLMNs, and
wherein determining whether the access to the PLMN, which is selected based on the at least one PLMN related to the disaster roaming in the list of forbidden PLMNs, is allowed based on the access identity comprises:
among a plurality of access identity numbers related to UE configuration, selecting the access identity equal to an access identity number related to the disaster roaming; and
determining, based on the access identity number related to the disaster roaming, whether the access to the PLMN is allowed.