System and method to allow simple IP mobile nodes to operate seamlessly in a mobile IP network with true roaming capabilities
First Claim
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1. A method of transmitting data between a mobile node and a home agent for the mobile node, the mobile node having an associated authentication server, the method comprising:
- establishing a first communication between a first packet data serving node (PDSN) and the mobile node located in a first network;
determining at a proxy server an address of the authentication server;
contacting the authentication server and, responsively, receiving information from which an address of the home agent for the mobile node may be determined;
determining the address of the home agent using the information received from the authentication server;
sending the address of the home agent from the proxy server to the first PDSN;
sending, from the authentication server to the proxy server, a methodology for determining a home address for the mobile node;
using, at the proxy server, the methodology to determine the home address for the mobile node;
sending the home address for the mobile node from the proxy server to the first PDSN;
sending, from the first PDSN to the home agent at the address of the home agent, a first registration request message for establishing a first registration between the first PDSN and the home agent;
routing the data from the mobile node to the home agent via the first PDSN.
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Abstract
A system and method of transmitting information between a mobile node and a home agent of the mobile node. The mobile node has an associated home AAA server. The address of the HAAA is determined. The HAAA is contacted and, responsively, receives information indicating a methodology of determining the home address of the mobile node. A proxy server determines the address of the home agent using information received from the PDSN. The information is routed from the mobile node to the home agent having the address.
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Citations
18 Claims
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1. A method of transmitting data between a mobile node and a home agent for the mobile node, the mobile node having an associated authentication server, the method comprising:
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establishing a first communication between a first packet data serving node (PDSN) and the mobile node located in a first network; determining at a proxy server an address of the authentication server; contacting the authentication server and, responsively, receiving information from which an address of the home agent for the mobile node may be determined; determining the address of the home agent using the information received from the authentication server; sending the address of the home agent from the proxy server to the first PDSN; sending, from the authentication server to the proxy server, a methodology for determining a home address for the mobile node; using, at the proxy server, the methodology to determine the home address for the mobile node; sending the home address for the mobile node from the proxy server to the first PDSN; sending, from the first PDSN to the home agent at the address of the home agent, a first registration request message for establishing a first registration between the first PDSN and the home agent; routing the data from the mobile node to the home agent via the first PDSN. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A system comprising:
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a mobile node; a wireless network coupled to the mobile node; a packet data serving node (PDSN) coupled to the wireless network; a proxy server coupled to the PDSN, the proxy server including a table comprising an address pool; an authentication server coupled to the proxy server; and a home agent coupled to the PDSN; wherein the mobile node sends a access-request message to the wireless network, and the wireless network sends the access-request message to the PDSN; wherein the PDSN forwards the access-request message to the proxy server; wherein the proxy server determines the address of the authentication server; wherein the authentication server receives the access-request message from the proxy server and, responsively, sends the proxy server information indicating (i) a first methodology of determining an address of the home agent, and (ii) a second methodology of determining a home address of the mobile node; wherein the proxy server determines the address of the home agent using the first methodology and determines the home address of the mobile node using the second methodology; wherein the proxy server sends the address of the home agent address and the home address of the mobile node to the PDSN; and wherein a data message from the mobile node is thereafter forwarded to the home agent via the PDSN. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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Specification