| 主权项 |
1. A mobile communication system that includes a packet data network gateway (PGW), user equipment (UE), and a policy management device, the UE being configured to establish a communication path utilizing a first access system to the PGW and a communication path utilizing a second access system to the PGW, the UE including a first network interface that is configured to perform communication through the communication path utilizing the first access system and a second network interface that is different from the first network interface and that is configured to perform communication through the communication path utilizing the second access system, the UE performing communication of a plurality of flows, the policy management device notifying the UE of an update of a mobile operator policy, wherein
the UE has a UE policy in which flow identification information is associated with access system identification information so as to select an access system for each flow, and is configured to perform communication of a flow by using the communication path utilizing the first access system on the basis of the UE policy, the policy management device includes update circuitry for updating the mobile operator policy in which flow identification information on flows communicated by the UE is associated with access system identification information and policy transmitting circuitry for transmitting an update of the mobile operator policy and a request for enabling a network interface to the UE, and the UE includes policy receiving circuitry for receiving the update of the mobile operator policy and the request for enabling the network interface, determining circuitry for detecting that an access system information item corresponding to a flow identified by the flow identification information in the UE policy is different from an access system information item corresponding to a flow identified by the flow identification information in the update of the mobile operator policy, communication path establishing circuitry for, in a case where the determining means determines that both the access system information items are different from each other, enabling the network interface on the basis of the request for enabling the network interface and establishing the communication path utilizing the second access system, and communication path switching circuitry for switching communication of the flow identified by the flow identification information to the communication path utilizing the second access system. |
