USIM-calculated concealed identifier failure handling

Abstract

In a mobile cellular network, a mobile network operator (MNO) or other entity can specify whether a user equipment (UE) is to utilize either a concealed identifier (e.g., a subscription concealed identifier (SUCI)) calculated by a universal subscriber identity module (USIM) of a universal integrated circuit card (UICC) or a concealed identifier calculated by mobile equipment (ME) of the UE that is separate from the UICC and USIM. In the event that a USIM-calculated concealed identifier is specified for use but the USIM fails in generation of a concealed identifier, the UE can utilize one or more failure recovery procedures to attempt completion of attachment of the UE to the same network or a different network to help ensure that the UE does not remain attached to a network without access to services of the network due to authentication failure.

Dependencies are inferred from the claim text.