PWS Message Reception in Stand-alone Non-Public Networks
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Solution Overview
Problem
Current wireless communication systems, particularly in 5G NR, do not support Public Warning System (PWS) messaging in Stand-alone Non-Public Networks (SNPNs), leading to erroneous or unnecessary behavior in UE/NW interactions during emergency events.
Innovation Solution
A method for managing PWS message reception, where a UE receives a configuration for warning message reception from a higher layer, and based on this configuration, determines whether to accept or ignore PWS messages from a secondary network, even if the UE is registered to or selected for an SNPN.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a UE is configured to monitor PWS messaging while registered to an SNPN, then the UE can receive public warning messages from public networks, but this may cause erroneous or unnecessary UE/NW behavior
Solution Approach 1:
The patent applies local quality by making the PWS monitoring capability network-specific. The UE determines whether to monitor PWS messages based on the specific network (SNPN or PLMN) it is registered to. The higher layer configuration enables selective PWS monitoring only for PLMN networks, while excluding SNPN networks, thus preventing erroneous behavior in SNPN context while maintaining reliable PWS reception in PLMN context.
Solution Approach 2:
The patent implements dynamics by making the PWS monitoring configuration dynamic and configurable. The higher layer (NAS or service layer) can configure the UE to enable or disable PWS monitoring based on the registered network type. This dynamic configuration allows the system to adapt to different network scenarios (SNPN vs PLMN) and prevent harmful behaviors while maintaining necessary PWS functionality.
2Device complexity
If PWS messaging is not supported in SNPN, then the network architecture remains simple, but UEs cannot receive critical alerts in private network scenarios
Solution Approach 1:
The patent applies universality by enabling the UE to handle PWS messaging across multiple network types (both SNPN and PLMN) through a unified configuration mechanism. The higher layer configuration provides a universal solution that works for both private and public networks, allowing the UE to receive critical alerts regardless of whether it is registered to an SNPN or PLMN, without requiring separate implementation paths for each network type.
3Loss of information
If the UE monitors PWS messages from a second network while registered to a first SNPN, then critical alerts from public networks can be received, but unnecessary processing and potential errors occur
Solution Approach 1:
The patent applies preliminary action by pre-configuring the UE with network-specific PWS monitoring capabilities before actual PWS message reception occurs. The higher layer configuration is established in advance, enabling the UE to immediately determine whether to accept or ignore PWS messages from any network without requiring real-time analysis, thus preventing unnecessary processing while ensuring critical alerts are captured.
Data Source
AI summary
A method for a user equipment (UE) for receiving a public warning system (PWS) message is provided. The method receives, via a first serving cell or a higher layer of the UE, a configuration for warning message reception that is associated with a first network. The method receives the PWS message from a second network that is supported by a second serving cell. The method then determines, based on the received configuration, whether to accept the PWS message or to ignore the PWS message.