Patent ID: 7209465
Filing Date: 2007-04-24
Classification: H04L,H04W

Abstract:
1. A wireless system comprising: a mobile terminal; and a plurality of communication systems for communication with the mobile terminal, the communication systems being different in service area of cells from each other; wherein each of the communication systems has base stations belonging to a sub-network which is unique to the communication system, each sub-network being connected to an Internet by way of a gateway provided for the sub-network, and the mobile terminal has a plurality of mobile station network interfaces which can access the communication systems respectively, and means for switching the communication systems accessed by the mobile station network interfaces based on cell position information of cells which are formed by the base stations of the communication systems and the present location of the mobile terminal and depending on the cell at the present location; the mobile terminal has a navigation system which provides a routing guidance from a present location to a destination; and the communication system switching means sets switching positions of the communication systems based on the cell position information and route information of the route guidance by means of the navigation system, and carries out switching depending on a relation between the switching positions and the present location by setting a position of switching based on the cell position information and the route information and switching the communication systems when the present location becomes the set position of switching.