MUMBAI, India, July 13 -- Intellectual Property India has published a patent application (202541001596 A) filed by Samsung Electronics Co. , Ltd. on January 07, 2025, for "managing Equivalent Plmn Lists To Enhance Disaster Roaming Services In Wireless Communication Network System".
Inventors include Danish Ehsan Hashmi; Lalith Kumar; and Vishal Yadav.
The application for the patent was published on July 10, 2026, under issue no. 28/2026.
Abstract: ABSTRACT “Managing Equivalent PLMN Lists to Enhance Disaster Roaming Services in wireless communication network system” The present invention provides a method for managing Equivalent Public Land Mobile Networks (EPLMN) list for disaster roaming services in a wireless communication network system. The method includes determining, by a User Equipment (UE) (101), that a disaster condition has occurred and no other PLMNs are available except for PLMNs in a forbidden PLMN list or allowable PLMNs unable to provide the EPS services or 5GS services. Further, the method includes transmitting, by the UE (101), a Non-Access Stratum (NAS) request message to a first PLMN. Further, the method includes receiving, by the UE (101), a NAS accept message from the first PLMN. Further, the method includes storing, by the UE (101), the Equivalent PLMNs received from the first PLMN as a "list of equivalent PLMNs”. he UE (101) does not remove PLMNs from the list of equivalent PLMNs even when they are available in the list of forbidden PLMNs in the UE (101). FIG. 5
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