| CPC H04W 52/0212 (2013.01) [H04W 4/70 (2018.02); H04W 52/0229 (2013.01); H04W 68/005 (2013.01); H04W 72/23 (2023.01); Y02D 30/70 (2020.08)] | 21 Claims | 

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               1. A method comprising: 
            receiving, at a core network node, a message including an indication that a notification is to be provided when a device becomes available to receive data and information indicative of one or more servers to be notified when the device becomes available to receive data; 
                receiving an area update or an attach request from the device; and 
                sending a device availability notification to a core network function, wherein the device availability notification comprises the information and a periodic area update time value. 
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