Utilized-network selection method, communication system and mobile terminal
First Claim
1. A utilized-network selection method for a mobile terminal whereby the mobile terminal communicates with a terminal of another party by utilizing a prescribed network from among a plurality of networks, comprising the steps of:
- providing a server system connected to each of the networks for exercising control whereby the mobile terminal is allowed to communicate with the other party via a prescribed network;
during communication with the other party by utilizing a first network, detecting another network or detecting deterioration of reception conditions on the side of the mobile terminal;
selecting networks for continuing communication in the server system and presenting these networks to the mobile terminal from the server system when another network is detected or when deterioration of reception conditions is detected;
selecting, on the side of the mobile terminal, a network for continuing communication and reporting this to the server system; and
continuing communication via the selected network under the control of the server system.
1 Assignment
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Accused Products
Abstract
A mobile information terminal communicates with a terminal of another party by utilizing a prescribed network from among a plurality of networks. During communication with the other party by utilizing a first network, another network or deterioration of reception conditions is detected. When another network or deterioration of reception conditions is detected, a server system automatically selects a network for continuing communication (i.e., an ASP makes the selection automatically) or presents recommended networks on a display unit of the mobile information terminal so that the network for continuing communication may be selected on the side of the mobile information terminal and reported to the server system (i.e., the user makes the selection). Communication is continued via the selected network under the control of the server system.
117 Citations
19 Claims
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1. A utilized-network selection method for a mobile terminal whereby the mobile terminal communicates with a terminal of another party by utilizing a prescribed network from among a plurality of networks, comprising the steps of:
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providing a server system connected to each of the networks for exercising control whereby the mobile terminal is allowed to communicate with the other party via a prescribed network;
during communication with the other party by utilizing a first network, detecting another network or detecting deterioration of reception conditions on the side of the mobile terminal;
selecting networks for continuing communication in the server system and presenting these networks to the mobile terminal from the server system when another network is detected or when deterioration of reception conditions is detected;
selecting, on the side of the mobile terminal, a network for continuing communication and reporting this to the server system; and
continuing communication via the selected network under the control of the server system.
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2. A utilized-network selection method for a mobile terminal whereby the mobile terminal communicates with a terminal of another party by utilizing a prescribed network from among a plurality of networks, comprising the steps of:
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providing a server system connected to each of the networks for exercising control whereby the mobile terminal is allowed to communicate with the other party via a prescribed network;
during communication with the other party by utilizing a first network, detecting another network or detecting deterioration of reception conditions on the side of the mobile terminal;
selecting automatically a network for continuing communication in the server system when another network is detected or when deterioration of reception conditions is detected; and
continuing communication via the selected network under the control of the server system.
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3. A communication system having a mobile terminal for communicating with a terminal of another party by utilizing a prescribed network from among a plurality of networks, and a server system connected to each of the networks for exercising control whereby the mobile terminal is allowed to communicate with the other party via the prescribed network, wherein said mobile terminal comprises:
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means for detecting another network or deterioration of reception conditions during communication with the other party utilizing a first network;
means for transmitting a service-start request to the server system when another network is detected or when deterioration of reception conditions is detected;
display means for displaying networks presented by the server system; and
means for selecting a network presented by the server system;
wherein the server system responds to the service-start request by obtaining networks for continuing communication and presenting these networks to the mobile terminal;
the network for continuing communication is finally selected and reported to the server system on the side of the mobile terminal; and
communication is continued via the selected network under the control of the server system. - View Dependent Claims (5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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4. A communication system having a mobile terminal for communicating with a terminal of another party by utilizing a prescribed network from among a plurality of networks, and a server system connected to each of the networks for exercising control whereby the mobile terminal is allowed to communicate with the other party via the prescribed network, wherein said mobile terminal comprises:
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means for detecting another network or deterioration of reception conditions during communication with the other party utilizing a first network; and
means for transmitting a service-start request to the server system when another network is detected or when deterioration of reception conditions is detected;
wherein the server system responds to the server-start request by selecting a network for continuing communication, and communication is continued via the selected network under the control of the server system.
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15. A mobile terminal in a communication system having the mobile terminal for communicating with a terminal of another party by utilizing a prescribed network from among a plurality of networks, and a server system connected to each of the networks for exercising control whereby the mobile terminal is allowed to communicate with the other party via the prescribed network, said mobile terminal comprising:
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means for detecting another network or deterioration of reception conditions during communication with the other party utilizing a first network;
means for transmitting a service-start request to the server system when another network is detected or when deterioration of reception conditions is detected;
display means for displaying networks presented by the server system in response to the service-start request;
means for selecting a network presented by the server system; and
means for notifying the server system of the selected network;
wherein the server system continues communication via the network of which it has been notified by the mobile terminal. - View Dependent Claims (17, 18, 19)
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16. A mobile terminal in a communication system having the mobile terminal for communicating with a terminal of another party by utilizing a prescribed network from among a plurality of networks, and a server system connected to each of the networks for exercising control whereby the mobile terminal is allowed to communicate with the other party via the prescribed network, said mobile terminal comprising:
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means for detecting another network or deterioration of reception conditions during communication with the other party utilizing a first network; and
means for transmitting a service-start request to the server system when another network is detected or when deterioration of reception conditions is detected;
wherein the server system selects a network for continuing communication in response to the service-start request and continues communication via this network.
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Specification