Systems and methods for paging over WiFi for mobile terminating calls

A device comprising:

• a memory storing instructions;
• and
• a processor configured to execute the instructions to:
• detect that an Internet Protocol Security (IPsec) tunnel from a user equipment (UE) device connected via a WiFi connection has become idle;
• instruct the UE device to tear down the IPsec tunnel, in response to detecting that the IPsec tunnel has become idle;
• receive a mobile terminating call for the UE device;
• page the UE device via a base station to reestablish the IPsec tunnel via the WiFi connection, in response to receiving the mobile terminating call for the UE device, wherein the paging is performed using information from a location update received from the UE device via the IPsec tunnel;
• and
• forward the received mobile terminating call to the UE device via the reestablished IPsec tunnel.

A system comprising:

• a first device configured to:
• implement a Unified Data Management (UDM) that stores information associated with user equipment (UE) devices;
• and
• a second device configured to:
• receive an instruction from the first device to tear down an Internet Protocol Security (IPsec) tunnel from a UE device connected via a WiFi connection when the IPsec tunnel has become idle;
• detect that the IPsec tunnel from the UE device connected via the WiFi connection has become idle;
• instruct the UE device to tear down the IPsec tunnel, in response to detecting that the IPsec tunnel has become idle;
• receive a mobile terminating call for the UE device;
• page the UE device via a base station to reestablish the IPsec tunnel via the WiFi connection, in response to receiving the mobile terminating call for the UE device, wherein the paging is performed using information from a location update received from the UE device via the IPsec tunnel;
• and
• forward the received mobile terminating call to the UE device via the reestablished IPsec tunnel.