Optimal gateway discovery while roaming
First Claim
1. A method of locating a preferred gateway for use by an invoking party within a multimedia Internet Protocol (IP) based communication system wherein said invoking party is associated with a home network with a home gateway, the method comprising:
- sending, by the invoking party, a service request requesting a particular service to the invoking party'"'"'s home gateway wherein said invoking party is roaming within a visited network and not located within said home network;
determining, by the home gateway, a preferred gateway outside of said home network for use by the invoking party wherein said determined preferred gateway is capable of providing the requested service to the roaming invoking party;
sending, by the home gateway, a response to the invoking party indicating the preferred gateway; and
resending, by the invoking party, a second service request requesting said particular service to the preferred gateway.
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Accused Products
Abstract
A method of retrieving an address of a previously unknown resource based on the location of the invoking user by consulting a known resource is provided. A user terminal, while roaming, may select an optimal gateway for providing multimedia communications to the terminal by first sending a service request to the terminal'"'"'s home gateway. In response, the home gateway determines the optimal gateway for use by the user based on the location of the invoking user. The address of the optimal gateway, as determined by the home gateway, is sent to the invoking user terminal, wherein the user sends a service request to the optimal gateway.
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Citations
21 Claims
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1. A method of locating a preferred gateway for use by an invoking party within a multimedia Internet Protocol (IP) based communication system wherein said invoking party is associated with a home network with a home gateway, the method comprising:
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sending, by the invoking party, a service request requesting a particular service to the invoking party'"'"'s home gateway wherein said invoking party is roaming within a visited network and not located within said home network;
determining, by the home gateway, a preferred gateway outside of said home network for use by the invoking party wherein said determined preferred gateway is capable of providing the requested service to the roaming invoking party;
sending, by the home gateway, a response to the invoking party indicating the preferred gateway; and
resending, by the invoking party, a second service request requesting said particular service to the preferred gateway. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method of invoking a service gateway by an invoking party within a multimedia Internet Protocol (IP) based communication system, wherein said invoking party is associated with a home network including a home gateway and currently roaming within a visited network, the method comprising the steps of:
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sending, by the invoking party, a service request for a particular service to the invoking party'"'"'s home gateway while traveling outside of said home network;
determining, by the home gateway, a preferred gateway for use by the invoking party for providing said requested service within said visited network;
sending, by the home gateway, a response to the invoking party indicating the preferred gateway; and
sending, by the invoking party, a second service request for said service to the preferred gateway. - View Dependent Claims (10, 11, 12, 13)
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14. A home gateway within a multimedia Internet Protocol (IP) based communication network, wherein said home gateway is associated with a home network serving a particular invoking party wherein said invoking party is currently roaming outside of said home network and traveling within a visited network, comprising:
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means for receiving a first service request from said invoking party roaming within said visited network, said first service request requesting a particular service;
means for determining the location of said roaming invoking party requesting said application service;
means for determining a preferred gateway for providing said requested service based on said determined location;
means for sending a reply message to said invoking party identifying said determined preferred gateway thereby allowing said invoking party to resend a second service request to said preferred gateway for requesting said service. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21)
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Specification