Patent ID: 7684801

Claim:
A control device, which constitutes a moving network including a plurality of mobile hosts, and a plurality of mutually connectable access interfaces each constituting a connection interface for a connection to a core network from a mobile host, and which serves to control a handover relating to the connection to the core network at the access interfaces, comprising: connection status acquiring means for acquiring information on a connection status to the core network at each access interface, from each access interface; handover predicting means for predicting a subsequent handover on a basis of the information on the connection status to the core network at each access interface; and changing means for dynamically changing a first access interface adopted as the connection interface for the mobile host to a second access interface in accordance with predetermined logic when a predetermined condition is satisfied on a basis of the information on the connection status to the core network at each access interface or prediction information for a subsequent handover, wherein, upon dynamically changing the first access interface to the second access interface, the mobile host remains connected to the first access interface that is not capable of maintaining a predetermined communication quality and is connected to the second access interface which is capable of maintaining the predetermined communication quality, the changing means issues an instruction for establishing a mutual communication connection between the first access interface and the second access interface, and the changing means continues to transmit and receive data to and from the first access interface through the second access interface via a communication link created in response to the instruction for establishing the mutual communication connection.