Abstract: A control apparatus includes an acquisition unit that acquires application information related to at least one of a plurality of sessions at a plurality of timings for each of the plurality of sessions related to a plurality of types of applications that are communicating in a network, a search unit that searches for an allocation band of each of the plurality of sessions at the plurality of timings based on a QoE prediction value of each of the plurality of sessions derived from the application information and a condition for a band of the network, and a control unit that controls allocation of a band for each of the plurality of sessions at the plurality of timings based on the allocation band searched by the search unit.

Abstract: A control apparatus includes an acquisition unit that acquires application information related to at least one of a plurality of sessions at a plurality of timings for each of the plurality of sessions related to a plurality of types of applications that are communicating in a network, a search unit that searches for an allocation band of each of the plurality of sessions at the plurality of timings based on a QoE prediction value of each of the plurality of sessions derived from the application information and a condition for a band of the network, and a control unit that controls allocation of a band for each of the plurality of sessions at the plurality of timings based on the allocation band searched by the search unit.

Abstract: A server selection devices includes: an acquisition unit for acquiring, regarding each of a plurality of servers having the same content, a list of quality information corresponding to communication environment information regarding a source of request for download of the content; and a selection unit for selecting one of the plurality of servers based on the list of the quality information regarding each of the plurality of servers and a cost associated with download of the content. Thus, a destination of a content download request can be selected while giving consideration to not only quality but also cost.

Abstract: A server selection devices includes: an acquisition unit for acquiring, regarding each of a plurality of servers having the same content, a list of quality information corresponding to communication environment information regarding a source of request for download of the content; and a selection unit for selecting one of the plurality of servers based on the list of the quality information regarding each of the plurality of servers and a cost associated with download of the content. Thus, a destination of a content download request can be selected while giving consideration to not only quality but also cost.