Roaming in a Communications Network
First Claim
Patent Images
1. A method comprising:
- receiving, at a mobile proxy device, from a mobile device that has moved into a foreign network, a request for a routable home-address via a network address translation (NAT) gateway;
in response to the request, assigning a routable home-address associated with the NAT gateway as a care-of-address for the mobile device;
sending to the mobile device a reply including the routable home-address associated with the NAT gateway for use as a care-of-address for the mobile device;
receiving from the mobile device a request for a home agent;
dynamically assigning one of a plurality of home agents to the mobile device; and
sending to the mobile device a reply having a home-address associated with the assigned home agent.
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Abstract
Communicating over a network may include a mobile proxy device to receive a request for a home agent from a mobile device. The mobile proxy device can assign a home agent to the mobile device and send a reply including a home-address associated with the assigned home agent to the mobile device.
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Citations
15 Claims
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1. A method comprising:
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receiving, at a mobile proxy device, from a mobile device that has moved into a foreign network, a request for a routable home-address via a network address translation (NAT) gateway;
in response to the request, assigning a routable home-address associated with the NAT gateway as a care-of-address for the mobile device;
sending to the mobile device a reply including the routable home-address associated with the NAT gateway for use as a care-of-address for the mobile device;
receiving from the mobile device a request for a home agent;
dynamically assigning one of a plurality of home agents to the mobile device; and
sending to the mobile device a reply having a home-address associated with the assigned home agent. - View Dependent Claims (2, 3, 4)
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5. An apparatus comprising:
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a network interface adapter; and
a processor coupled to the network adapter, wherein the processor is adapted to;
receive a request for a routable home-address from a mobile device via a network address translation (NAT) gateway, when the mobile device moves into a foreign network, in response to the request, assign a routable home-address associated with the NAT gateway as a care-of-address for the mobile device, and send through the network interface adapter a reply to the mobile device, the reply including the assigned one of plurality of routable home-addresses associated with the NAT gateway for use as a care-of address for the mobile device;
wherein the processor and network interface adapter are located in a home network. - View Dependent Claims (6, 7)
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8. An article comprising a computer-readable medium that stores computer-executable instructions for causing a computer to:
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receive, at a mobile proxy device, a request for a routable address from a mobile device via a network address translation (NAT) gateway, when the mobile device moves into a foreign network;
in response to the request, assign a routable home-address associated with the NAT gateway as a care-of-address for the mobile device in response to receiving the request;
send to the mobile device a reply including the routable home-address associated with the NAT gateway for use as the care-of address for the mobile device, and dynamically assign one of a plurality of home agents to the mobile device. - View Dependent Claims (9, 10, 11)
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12. A system comprising:
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a mobile device; and
a mobile proxy including a processor and instructions executable by the processor to cause the processor to;
receive a request for a routable address, via a network address translation (NAT) gateway from the mobile device, when the mobile device moves into a foreign network, in response to the request, assign a routable home-address associated with the NAT gateway for use as a care-of-address by the mobile device, send to the mobile device a reply including the routable home-address, and dynamically assigning one of plurality of home agents to the mobile device. - View Dependent Claims (13, 14, 15)
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Specification