Abstract: An information processing device (100) stores information (hereinafter, referred to as communication network information) in advance, which information indicates whether or not a communication network (200) is compatible with a Fast Dormancy function. Then, the information processing device (100) reads the communication network information of the communication network (200) when a packet communication with an information server (220) is ended, and sets a free procedure of a communication channel based on the communication network information that is read. Then, information processing device (100) frees the communication channel according to the free procedure that is set.