FIG. 9 is a diagram that illustrates a configuration example of a transmission frame of the mobile terminal 300 for request for information in the exemplary embodiment of the present technology.

The frame format is a frame transmitted from the mobile terminal 300 to the information server 500 through the wireless network 410 and the Internet 430. The transmission frame for request for information includes a synchronizing signal 671 followed by transmission destination server unique information 672, transmitter device unique information 673, current-position information 674, movement speed information 675, collection scope information 676, and a list 677 of attribute information on sensors that needs to be collected. Furthermore, an error detection code 678 is added to the end.

The information server 500 that has received the frame supplies the mobile terminal 300 with attribute information on IoT devices 100 that correspond to the current-position information 674 or the collection scope information 676. At that time, the movement speed information 675 may also be considered. Furthermore, items of attribute information that correspond to the list 677 of attribute information on sensors that needs to be collected are supplied.

Note that the above parameters are only exemplified, and addition or deletion may be performed as necessary.

[Configuration of Transmission Frame of Information Server]

FIG. 10 is a diagram that illustrates a configuration example of a transmission frame of the information server 500 in the exemplary embodiment of the present technology.