A
wireless transmission device makes it possible to access
the internet from a
wireless LAN terminal, and notifies the state of
wireless connection to a public
wireless transmission network to the
wireless LAN terminal, thereby alleviating uncertainty and disquiet on the part of the user when connecting to this network. The
wireless transmission device detects the external network utilization information and notifies it to the
wireless LAN terminal, and thereby the
processing power of the
wireless transmission device is enhanced, and uncertainty and disquiet on the part of the user when connecting to the public wireless
transmission network are alleviated. If the wireless transmission terminal takes
advantage of a
mobile wireless transmission device for accessing
the internet by using the public wireless
transmission network, the communication burden which is imposed upon the public wireless
transmission network is alleviated, and
the internet access environment is enhanced. When a terminal device has made a connection request, an
authentication section authenticates the terminal device, based upon
authentication information which has been stored in a storage section in advance. And an encoding section executes an encoding procedure based upon a code which has been stored in the storage section in advance. By doing this, leakage of the
authentication information is prevented. The
wireless LAN terminal registers getting off reservation information and its own specific recognition code in advance. When a vehicle approaches a stopping point, the recognition code is verified and the getting off reservation information is notified to the wireless LAN terminal. By doing this, it is possible for the passenger who owns the wireless LAN terminal to get off at his desired stopping point.