A method of controlling a wireless personal area network (PAN) device, such that the PAN device performs at least one from among a coordinator role, a router role, and an end device role in a plurality of networks by using a single physical layer includes setting a first role corresponding to a first network and a second role corresponding to a second network; acquiring activation interval information of the first network and the second network based on the first role and the second role that are set in correspondence to the first network and the second network, respectively; performing the first role during the activation interval of the first network based on the acquired activation interval information; and switching the first role to the second role and performing the second role during the activation interval of the second network.