System and method for foreign agent control node redundancy in a mobile internet protocol network
First Claim
1. A method for selecting a packet data serving node for a mobile node in a mobile Internet Protocol network, the method comprising:
- receiving on a first foreign agent control node a registration request message from a radio network node, wherein the registration request message is associated with a mobile node;
making a determination that a mobile profile associated with the mobile node is not available on the first foreign agent control node;
generating a query request message at the first foreign agent control node, wherein the query request message comprises a request for the mobile profile associated with the mobile node;
sending the query request message from the first foreign agent control node to a second foreign agent control node;
receiving a query response message on the first foreign agent control node from the second foreign agent control node;
making a determination that the query response message comprises the mobile profile including a network address of a packet data serving node associated with the mobile node; and
sending from the first foreign agent control node to the radio network node a registration response message comprising the network address of the packet data serving node specified in the mobile profile.
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Accused Products
Abstract
A system and methods are shown for selecting a packet data serving node (PDSN) for a mobile node in a mobile Internet Protocol network. One method includes responsively to receiving on a first foreign agent control node (FACN) from a radio node a registration request message and determining that a mobile profile associated with a mobile node specified in the registration request is not available at the first FACN, sending from the first FACN to a second FACN a query request message including a request for the mobile profile. If the second FACN includes the requested mobile profile, the second FACN sends it to the first FACN using a query response message. When the first FACN receives the query response message, the first FACN makes a determination that the mobile profile includes a network address of the last serving PDSN. Responsively, the first FACN sends to the radio node a registration response message including the network address of the PDSN specified in the mobile profile, and the mobile node registers with the PDSN. Alternatively, if the second FACN does not have the requested mobile profile, the first FACN may select a PDSN using a set of PDSN selection rules available at the first FACN.
88 Citations
26 Claims
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1. A method for selecting a packet data serving node for a mobile node in a mobile Internet Protocol network, the method comprising:
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receiving on a first foreign agent control node a registration request message from a radio network node, wherein the registration request message is associated with a mobile node;
making a determination that a mobile profile associated with the mobile node is not available on the first foreign agent control node;
generating a query request message at the first foreign agent control node, wherein the query request message comprises a request for the mobile profile associated with the mobile node;
sending the query request message from the first foreign agent control node to a second foreign agent control node;
receiving a query response message on the first foreign agent control node from the second foreign agent control node;
making a determination that the query response message comprises the mobile profile including a network address of a packet data serving node associated with the mobile node; and
sending from the first foreign agent control node to the radio network node a registration response message comprising the network address of the packet data serving node specified in the mobile profile. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for selecting a packet data serving node in a mobile Internet Protocol network, the method comprising:
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receiving from a first foreign agent control node on a second foreign agent control node a query request message comprising a request for a mobile profile associated with a mobile node;
making a determination that the mobile profile associated with the mobile node is available on the second foreign agent control node;
generating on the second foreign agent control node a query response message comprising the mobile profile associated with the mobile node;
sending the query response message from the second foreign agent control node to the first foreign agent control node;
receiving the query response message on the first foreign agent control node from the second foreign agent control node;
making a determination that the mobile profile comprises a network address of a packet data serving node associated with the mobile node; and
sending a registration response message from the first foreign agent control node to a radio network node, the registration response message comprising the network address of the packet data serving node. - View Dependent Claims (11, 12, 13, 14)
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15. A method for selecting a packet data serving node in a mobile Internet Protocol network, the method comprising:
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receiving on a first foreign agent control node a registration request message from a radio network node, wherein the registration request message is associated with a mobile node;
making a determination that a mobile profile associated with the mobile node is not available on the first foreign agent control node;
sending a query request message from the first foreign agent control node to the second foreign agent control node, wherein the query request message comprises a request for the mobile profile associated with the mobile node;
receiving the query request message at the second foreign agent control node;
making a determination that the mobile profile is available on the second foreign agent control node;
sending a query response message from the second foreign agent control node to the first foreign agent control node, wherein the query response message comprises the mobile profile associated with the mobile node;
receiving the query response message on the first foreign agent control node;
making a determination that the mobile profile comprises a network address of a packet data serving node associated with the mobile node; and
sending a registration response message from the first foreign agent control node to the radio network node, wherein the registration response message comprises the network address of the packet data serving node. - View Dependent Claims (16, 17)
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18. A system for foreign agent control node redundancy in a mobile Internet Protocol network, the system comprising:
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a first foreign agent control node and a second foreign agent control node, wherein the first foreign agent control node and the second foreign agent control node are configured to control assignment of mobile nodes to one of a plurality of packet data serving nodes on a foreign network;
a query request message for use at the first and second foreign agent control nodes, wherein the first foreign agent control node is configured to send to the second foreign agent control node the query request message to request from the second foreign agent control node a mobile profile of a mobile node; and
a query response message for use at the first and second foreign agent control nodes, wherein the second foreign agent control node uses the query response message to send the mobile profile of the mobile node to the first foreign agent control node responsively to receiving the query request message from the first foreign agent control node, wherein the first foreign agent control node is configured to receive the query response message and make a determination that the query response message comprises the mobile profile including a network address of a packet data serving node associated with the mobile node, and responsively, send a registration response message to a radio network node, wherein the registration response message comprises the network address of the packet data serving node. - View Dependent Claims (19, 20, 21, 22, 23)
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24. A system for foreign agent control node redundancy in a mobile Internet Protocol network, the system comprising:
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a first foreign agent control node;
a second foreign agent control node; and
an interface for use on the first foreign agent control node and the second foreign agent control node, wherein the first foreign agent control node is configured to use the interface to request from the second foreign agent control node a mobile profile of a mobile node, and responsively to receive the mobile profile from the second foreign agent control node, wherein the first foreign agent control node;
determines that the mobile profile comprises a network address of a packet data serving node associated with the mobile node; and
sends a registration response message to a radio network node, the registration response message comprising the network address of the packet data serving node. - View Dependent Claims (25, 26)
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Specification