US 12,477,317 B2
Roaming method, apparatus, and system
Fangyuan Zhu, Beijing (CN); Yan Li, Beijing (CN); and Jianning Liu, Shenzhen (CN)
Assigned to HUAWEI TECHNOLOGIES CO., LTD., Shenzhen (CN)
Filed by HUAWEI TECHNOLOGIES CO., LTD., Guangdong (CN)
Filed on Jun. 28, 2022, as Appl. No. 17/851,226.
Application 17/851,226 is a continuation of application No. PCT/CN2019/129833, filed on Dec. 30, 2019.
Prior Publication US 2022/0330005 A1, Oct. 13, 2022
Int. Cl. H04W 8/12 (2009.01); H04W 60/06 (2009.01); H04W 84/04 (2009.01)
CPC H04W 8/12 (2013.01) [H04W 60/06 (2013.01); H04W 84/042 (2013.01)] 17 Claims
OG exemplary drawing
 
10. An apparatus, comprising:
a processor; and
a memory coupled to the processor and configured to store computer instructions that, when executed by the processor, cause the apparatus to:
access a second public land mobile network (PLMN) in response to a fault occurring in a first PLMN, wherein a dynamic roaming agreement is activated between the second PLMN and the first PLMN;
receive, following recovery of the fault in the first PLMN, indication information from the second PLMN, wherein the indication information indicates to deactivate the dynamic roaming agreement between the second PLMN and the first PLMN, wherein the receiving indication information from the second PLMN comprises receiving from the second PLMN a deregistration request message comprising the indication information, wherein the dynamic roaming agreement between the second PLMN and the first PLMN comprises: activating the dynamic roaming agreement between the first PLMN and the second PLMN when the fault occurs in the first PLMN, and deactivating the dynamic roaming agreement between the second PLMN and the first PLMN when the first PLMN is recovered; and
send an access request message to the first PLMN based on the indication information.