Wireless communication system having communication system switching function
First Claim
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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;
whereineach 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, andthe 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.
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Abstract
Base stations of a communication system belong to a sub-network, which is connected to the Internet by way of a gateway. Base stations of another communication system belong to sub-network, which is connected to the Internet by way of another gateway. A mobile terminal communicates with a server by using one of the communication systems. In this case, the mobile terminal includes mobile station network interfaces which can access to the communication systems, and is designed to switch communication systems by means of a communication system switching unit.
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Citations
6 Claims
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1. A wireless system comprising:
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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;
whereineach 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.
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2. A mobile terminal for a wireless system that has:
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a plurality of communication systems for communication with the mobile terminal, the communication systems being different 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 comprises a plurality of mobile station network interfaces which can access the communication systems respectively; switching means for switching between the communication systems wherein the switching means switches the communication systems accessed by the mobile station network interfaces based on the cell position information of cells which are formed by the base stations of the communication systems, a current location of the mobile terminal, and depending on the cell at the current location;
whereinthe switching means switches between the communication systems based on the cell position information and route information in a case of implementation of route guidance of the mobile terminal by a navigation system, and carries out switching by comparing switching positions and the current location. - View Dependent Claims (3)
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4. A wireless system comprising:
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a mobile terminal; and a plurality of communication systems for communication with the mobile terminal, the systems being different from each other, characterized in that each of the communication systems has base stations belonging to a sub-network which is unique to a one of said plurality of communication systems, each of said communication systems being connected to an Internet by way of a gateway provided for the sub-network, the gateway having a router function for routing between the internet and the sub-network, and the mobile terminal has a plurality of mobile station network interfaces, each of which can access a different one of the plurality of communication systems, and means for routing application software located between the mobile station network interfaces and a section running the application software, said means for routing the application software thereby switching the communication systems by connecting the section running the application software to any one of the mobile station network interfaces. - View Dependent Claims (5, 6)
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Specification