Device in wireless network, device resource management apparatus, gateway and network server, and control method of the network server

Provided is a device resource management apparatus in a wireless network, the device resource management apparatus including an access mode selection module to select a predetermined access mode among a plurality of access modes for a device, each of the plurality of access modes determining a type of a medium included in an access route between the device and an opponent device, and a device agency module to obtain an agent profile corresponding to the device when an access route between the device and the opponent device is formed according to the predetermined access mode, and to perform, as a proxy for the device, at least one function defined by the agent profile.