Samsung patents method to block untrusted roaming networks
This patent describes a way for phones to handle roaming instructions from foreign cell networks. If a network sends a roaming command that fails a security check, the phone adds that network to a temporary block list to prevent future connection attempts.
In the filing’s own words
Embodiments herein provide a method for managing a priority of Visited Public Land Mobile Networks (VPLMNs) of a wireless communication network. The method includes receiving a registration accept message including steering of roaming (SoR) information from a VPLMN; in response to a security check of the SoR information being failed, adding the VPLMN to a SoR abort list including PLMNs where a registration was aborted due to SoR; and deleting the SoR abort list after a predetermined time period.
What exactly they claim (claim 1)
1. A method for managing a priority of visited public land mobile networks (VPLMNs) of a wireless communication network by a user equipment (UE), the method comprising: receiving a registration accept message including steering of roaming (SoR) information from an access and mobility management function (AMF) of a VPLMN; based on a security check of the SoR information being failed, adding the VPLMN to a list of public land mobile networks (PLMNs) where a registration was aborted due to SoR; and deleting the list after a predetermined time period.
Facts
- Company
- Samsung (SAMSUNG ELECTRONICS CO., LTD.)
- Official title
- System and methods to maintain priority of VPLMN
- Patent number
- US12732790B2
- Application number
- 18261066
- Filed
- Jan 11, 2022
- Granted
- Sep 8, 2026
- Inventors
- 6
- Claims
- 18
Classified under
H04W 8/12 Electricity & electronicsH04W 60/04 Electricity & electronicsH04W 84/042 Electricity & electronicsMore from Samsung in Networks & wireless
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Summaries are simplified from the filing’s own abstract and first claim. A patent filing is not a product announcement.
Patent data and drawings: U.S. Patent and Trademark Office (USPTO). Nebula is not affiliated with or endorsed by the USPTO.