Subprocessor device, mobile devices and sensor network system having the same

PURPOSE: A sub-processor device, a portable terminal including the same, and a sensor network system including the same are provided to maintain a low-power state when a main processor device operates a specific event. CONSTITUTION: A communication unit(111) receives a network signal from an external device. A sub-processor unit(112) includes a protocol stack and a sub-application. The protocol stack processes a network signal received in the communication unit. The sub-application generates the network signal as an event. The sub-application operates the main processor in the occurrence of a specific event. [Reference numerals] (10) Main processor device; (111) Communication unit; (111a) Transmitting means; (111b) Receiving means; (112) Sub processor unit; (112a) Protocol stack; (112b) Sub-application