Patent ID: 9503958
Filing Date: 2016-11-22
CPC Classification: H04W

Claim Text:
1. A path control device for a plurality of wireless links connecting a plurality of communication devices, the path control device comprising: an information management unit that is implemented as a hardware component and that stores a correlation of communication quality between the plurality of wireless links; and a path selecting unit that is implemented as a hardware component and that selects a path of a flow using the correlation of communication quality between the plurality of wireless links, wherein the path selecting unit divides the plurality of wireless links into a plurality of groups according to a magnitude of a correlation of communication quality between the wireless links, and selects a normal path of the flow using wireless links belonging to the same group, the information management unit calculates a correlation coefficient between the wireless link used for the normal path and another wireless link by using communication qualities of the plurality of wireless links, and the path selecting unit selects a redundant path as the path of the flow from among wireless links having a correlation coefficient equal to or smaller than a predetermined threshold with a wireless link used for the normal path.