CPC H04W 76/18 (2018.02) [H04W 8/08 (2013.01); H04W 48/16 (2013.01); H04W 68/005 (2013.01); H04W 76/25 (2018.02); H04W 76/27 (2018.02); H04W 92/10 (2013.01)] | 20 Claims |
1. A method of operating a radio access network (“RAN”) node, the method comprising:
receiving a non-access stratum (“NAS”) packet data unit (“PDU”) for a wireless device from a core network (“CN”) node, the wireless device being in an inactive state in which the wireless device is in a low power mode with discontinuous reception (“DRX”);
paging the wireless device in response to receiving the PDU; and
sending a NAS non-delivery message to the CN node in response to failure of the paging for the wireless device, the NAS non-delivery message including an indication that the wireless device is in the inactive state.
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