Optimization engine, optimization method, and program

An optimization engine for optimizing a communication system, wherein

• the communication system has a configuration in which a plurality of terminals are each connected to an upper network via any of a plurality of access networks,
• the optimization engine comprising:
• a processor;
• and
• a storage medium having computer program instructions stored thereon, when executed by the processor, perform to:
• collect communication quality information and network feature values for each of the access networks and availability information for each of the terminals, the availability information indicating which of the access networks can be used by the terminal;
• create connection destination candidates for each of the terminals based on the availability information, the connection destination candidates being candidates for an access network among the access networks to which the terminal is to be connected;
• estimate communication quality with respect to the connection destination candidates based on the communication quality information, to obtain estimated communication quality;
• and
• determine an optimum connection destination from among the connection destination candidates based on a calculation value that is obtained by substituting the network feature values and the estimated communication quality into an objective function that is set in advance.