UE and network behavior at and after a network disaster
AssigneeMediaTek Singapore Pte. Ltd.
InventorsMarko Niemi, Yuan-Chieh Lin, Chien-Chun Huang-Fu
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Abstract
Solutions pertaining to user equipment (UE) and network behavior at and after a network disaster in mobile communications are proposed. An apparatus, implemented in or as a UE, determines whether a disaster condition is met with respect to a first public land mobile network (PLMN). The apparatus then selects a second PLMN according to information listing one or more PLMNs which are allowed to be selected by the UE when the disaster condition is met. The apparatus also attempts a registration in the second PLMN.
Claims18
A method, comprising:
- determining, by a processor of a user equipment (UE), whether a disaster condition is met with respect to a first public land mobile network (PLMN);
- and
- selecting, by the processor, a second PLMN in a priority order from a listing of one or more PLMNs which are allowed to be selected by the UE when the disaster condition is met;
- and
- attempting, by the processor, a registration in the second PLMN,
- wherein the attempting of the registration in the second PLMN is triggered by the second PLMN being allowed to be selected and a specific period of time being elapsed, and
- wherein the listing of one or more PLMNs which are allowed to be selected by the UE when the disaster condition is met is either pre-configured in the UE or provisioned to the UE by a network.
A method, comprising:
- determining, by the processor of a user equipment (UE), that a first public land mobile network (PLMN) has recovered from a disaster condition according to a received message;
- performing, by the processor, a PLMN search responsive to the determining;
- and
- responsive to one other PLMN being allowed to be selected, attempting, by the processor, a registration in the other PLMN selected from a result of the PLMN search responsive to the other PLMN being allowed to be selected and a specific period of time being elapsed,
- wherein the disaster condition is met based on one or more of:
- a non-access stratum (NAS) signaling indicating that the UE is deregistered;
- and
- a radio resource control (RRC) signaling indicating that an N2 interface, which is a control plane interface between an access network and a 5th Generation core (5GC), is not available or that an uplink (UL) message over the N2 interface is not routable.
An apparatus implementable in a user equipment (UE), comprising:
- a transceiver configured to communicate wirelessly;
- and
- a processor coupled to the transceiver and configured to perform operations comprising:
- determining, via the transceiver, whether a disaster condition is met with respect to a first public land mobile network (PLMN);
- selecting, via the transceiver, a second PLMN in a priority order from a listing of one or more PLMNs which are allowed to be selected by the UE when the disaster condition is met;
- attempting, via the transceiver, a registration in the second PLMN responsive to the second PLMN being allowed to be selected and a specific period of time being elapsed,
- wherein the listing of one or more PLMNs which are allowed to be selected by the UE when the disaster condition is met is either pre-configured in the UE or provisioned to the UE by a network.
Dependencies are inferred from the claim text.