1. An apparatus of a ubiquitous context-aware agent based on a sensor network, the apparatus comprising: a sensor platform for collecting data of real world and transmitting the collected data to a context-aware agent; the context-aware agent for interpreting and integrating the data of real world from the sensor platform, and storing and managing context information according to the interpreted and integrated data; and a service provider for receiving the context information from the context-aware agent, and automatically performing operations according to the received context information, wherein the context-aware agent includes a context interpreter for receiving the collected data from the sensor platform and interpreting the received data to be viewable to a human and a computer; an integrator for receiving the interpreted context information from the context interpreter and integrating the received context information in a predetermined format; a space manager for receiving the interpreted context information from the context interpreter and detecting users' intention with reference to a relation between the users' movement and static objects in a predetermined space; a home map manager for receiving the interpreted context information from the context interpreter, and displaying current states of a real world to the user using the interpreted context information; a context storage for storing information transferred from the context integrator, the space manager and the home map manager, and outputting the stored information in response to the request; and a context manager for receiving the predetermined format of the integrated context information from the context integrator and managing the context information stored in the context storage.