A method performed by a sensor network monitor in a communications system for mapping a plurality of sensors to sensor identification information provided by a mobile terminal , the method comprising: receiving stimulus characteristic information, which characterizes a stimulus provided to one of the plurality of sensors , and an associated sensor identification information from the mobile terminal ; receiving a response signal from the one of the plurality of sensors responding to the stimulus, and identifying a network address of the one of the plurality of sensors ; matching the response signal from the one of the plurality of sensors to the stimulus characteristic information from the mobile terminal ; associating the network address of the one of the plurality of sensors with the sensor identification information associated with the stimulus characteristic information matched to the response signal; and providing the network address of the one of the plurality of sensors and the associated sensor identification information to a resource directory for storage, wherein: the step of receiving the stimulus characteristic information from the mobile terminal comprises receiving a sequence of motion direction values generated by a motion sensor connected to the mobile terminal while the mobile terminal is moved within a viewable space of a camera sensor ; and the step of matching the response signal from the one of the plurality of sensors to the stimulus characteristic information from the mobile terminal comprises receiving a video signal from the camera sensor , and matching the sequence of motion direction values to a pattern of movement of the mobile terminal detected within the video signal. receiving stimulus characteristic information, which characterizes a stimulus provided to one of the plurality of sensors , and an associated sensor identification information from the mobile terminal ; receiving a response signal from the one of the plurality of sensors responding to the stimulus, and identifying a network address of the one of the plurality of sensors ; matching the response signal from the one of the plurality of sensors to the stimulus characteristic information from the mobile terminal ; associating the network address of the one of the plurality of sensors with the sensor identification information associated with the stimulus characteristic information matched to the response signal; and providing the network address of the one of the plurality of sensors and the associated sensor identification information to a resource directory for storage, the step of receiving the stimulus characteristic information from the mobile terminal comprises receiving a sequence of motion direction values generated by a motion sensor connected to the mobile terminal while the mobile terminal is moved within a viewable space of a camera sensor ; and the step of matching the response signal from the one of the plurality of sensors to the stimulus characteristic information from the mobile terminal comprises receiving a video signal from the camera sensor , and matching the sequence of motion direction values to a pattern of movement of the mobile terminal detected within the video signal. <EOS>