UE Deregistration From Disaster Roaming on Forbidden PLMN
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Solution Overview
Problem
Existing wireless networks fail to effectively manage the deregistration of user equipment (UE) during disaster roaming services, leading to continued usage of costly and low-priority disaster roaming services, impacting both the home PLMN and visited PLMN revenues and user services due to malicious non-indication of disaster condition termination by forbidden PLMNs.
Innovation Solution
A method and system for UE operations during a disaster situation, involving detection of the disaster condition, registration with a forbidden PLMN for disaster roaming, and deregistration upon detecting normal service availability on non-3GPP access, along with corresponding procedures at the UE, home PLMN, and forbidden PLMN to ensure timely transition to normal services.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the UE continues to use disaster roaming service on forbidden PLMN, then service availability is maintained during disaster conditions, but abnormal charging occurs and revenue loss increases
Solution Approach 1:
The system implements feedback mechanisms where the UE monitors disaster condition indicators from the network and provides status information back to the network. The network responds by providing deregistration triggers when disaster conditions end, creating a closed-loop system that prevents abnormal charging while maintaining service availability during actual disasters.
Solution Approach 2:
The network performs preliminary actions by proactively providing deregistration trigger information to the UE before the UE can incur abnormal charges. This allows the UE to switch back to normal service before continuing to use disaster roaming services, preventing revenue loss while maintaining reliability during actual disaster conditions.
2Duration of action of stationary object
If the forbidden PLMN does not indicate disaster condition termination, then service continuity is maintained, but UE cannot transition to normal services timely
Solution Approach 1:
The patent introduces an intermediary mechanism where the network provides deregistration trigger information as a mediator between the forbidden PLMN's disaster condition status and the UE's service selection. This intermediary allows the UE to transition timely without directly relying on the forbidden PLMN's disaster condition indications, resolving the contradiction between service continuity and transition speed.
3Loss of energy
If the UE monitors for disaster condition termination, then abnormal charging is prevented, but additional signaling overhead is generated
Solution Approach 1:
The UE performs self-service by autonomously monitoring for deregistration trigger information provided by the network. This self-service approach allows the UE to prevent abnormal charging through its own actions based on network-provided triggers, minimizing the need for additional signaling overhead while maintaining the ability to prevent abnormal charging.
Data Source
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AI summary
The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. Embodiments herein disclose a method for handling a deregistration procedure of a UE (100) for a disaster roaming service in a wireless network (1000) by the UE (100). The method includes detecting a disaster condition in the wireless network (1000). Further, the method includes triggering a registration procedure with a forbidden PLMN (FPLMN) on a 3GPP access to receive the disaster roaming service in the wireless network (1000) and get registered for the disaster roaming service with the FPLMN (300). Further, the method includes detecting a signal on a non-3GPP access to receive a normal service. Further, the method includes triggering a deregistration procedure with the FPLMN (300) on the 3GPP access to stop receiving the disaster roaming service from the FPLMN (300) in response to detecting the signal on the non-3GPP access to receive the normal service.