The present invention relates to an internet network connecting and roaming system
and method providing internet communication service to a data communication carried
by a user moving indoors or outdoors. In the present invention, the user is provided
with a communication service by connecting with an outdoor wireless internet network
such as an outdoor wireless LAN or packet network when the user is located outdoors.
Then, upon receiving indoor system ID information, it is determined whether the
received indoor system ID information is identical to stored indoor system ID information.
If the two indoor system ID informations are identical to each other, the communication
route of the data communication terminal is switched from the outdoor wireless
internet network to the indoor gateway, and makes wireless communications with
the indoor gateway through an indoor wireless connection module. Before the switching
of the communication route, the location of the data communication terminal is
authenticated by a location register and stored therein.
