US 12,082,008 B2
Communication method for handling network error
Hyunsook Kim, Seoul (KR); Sungduck Chun, Seoul (KR); Laeyoung Kim, Seoul (KR); Sangmin Park, Seoul (KR); and Myungjune Youn, Seoul (KR)
Assigned to LG ELECTRONICS INC., Seoul (KR)
Appl. No. 17/600,207
Filed by LG ELECTRONICS INC., Seoul (KR)
PCT Filed Dec. 23, 2019, PCT No. PCT/KR2019/018286
§ 371(c)(1), (2) Date Sep. 30, 2021,
PCT Pub. No. WO2020/204309, PCT Pub. Date Oct. 8, 2020.
Claims priority of application No. 10-2019-0038697 (KR), filed on Apr. 2, 2019.
Prior Publication US 2022/0217553 A1, Jul. 7, 2022
Int. Cl. H04W 84/04 (2009.01); H04W 8/08 (2009.01); H04W 24/04 (2009.01)
CPC H04W 24/04 (2013.01) [H04W 8/08 (2013.01); H04W 84/042 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A method for handling network failure, the method performed by a terminal and comprising:
receiving System Information Block (SIB) message including information related to a second public land mobile network (PLMN) to which the terminal is subscribed, from a base station in a first PLMN;
determining that the base station in the first PLMN is a base station in the second PLMN, based on that the information related to the second PLMN is received;
transmitting a request message for accessing to the second PLMN, to the base station in the first PLMN, based on the information related to the second PLMN,
wherein the request message is used by the base station in the first PLMN to enable the UE to access to the first PLMN;
receiving information related to a failure occurred in the second PLMN, from the base station of the first PLMN; and
displaying information related to the failure occurred in the second PLMN on a display of the terminal.