Under some circumstances, a user equipment (UE) can fail to receive a warning notification from a warning system, such as the Public Warning System (PWS), while other UE associated with the same user receive the warning notification. To ensure that a user does not miss the warning notification in these circumstances, one or more of the UEs can support emergency message relay, wherein the one or more UEs cast, or relay, any received warning notifications to other trusted UEs, such as to other UEs on the same Wi-Fi network.
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Chuang, Poying and Chen, Tim, "Trust-Based Emergency Message Relay", Technical Disclosure Commons, (April 11, 2022)