A mobile terminal (UE) used in a mobile communication network that includes a mobility management entity (MME) and a serving gateway (S-GW), receives paging from the mobile communication network, upon arrival of an incoming call destined for the mobile terminal at the mobile communication network, in which if the mobility management entity has restarted, the serving gateway maintains a specific S5/S8 bearer and deletes other bearers, and in response to the paging, re-attaches to the mobile communication network.