Address management for mobile nodes
First Claim
1. A method for address management of mobile nodes, said method comprising the steps of:
- receiving a mobile IP message comprising a registration request message from a first mobile node;
assigning a first port range of globally unique port numbers to said first mobile node; and
transmitting said first port range of globally unique port numbers to said first mobile node.
2 Assignments
0 Petitions
Accused Products
Abstract
A home agent assigns disjoint ranges of port numbers to mobile nodes that share a global IP address. In response to a registration request message from a mobile node, the home agent transmits to the mobile node its assigned range of port numbers, as an extension to a registration reply message. The home agent maintains data records for the mobile nodes that have registered with it, wherein a data record for a mobile node includes its global IP address, its assigned range of port numbers, and its current address. When the home agent receives data packets destined for one of these registered mobile nodes, as determined from the destination address and destination port number specified in the data packets, the home agent forwards the data packets to the current address listed in the mobile node'"'"'s data record.
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Citations
20 Claims
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1. A method for address management of mobile nodes, said method comprising the steps of:
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receiving a mobile IP message comprising a registration request message from a first mobile node; assigning a first port range of globally unique port numbers to said first mobile node; and transmitting said first port range of globally unique port numbers to said first mobile node. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for address management of mobile nodes, said method comprising the steps of:
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receiving a registration request message from a first mobile node; assigning a first range of globally unique port numbers to said first mobile node, wherein said first range of globally unique port numbers is defined by a low port number and a high port number; and transmitting a registration reply message to said first mobile node, said registration reply message including a port range extension, said port range extension including said low port number and said high port number.
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12. A system for address management of mobile nodes, said mobile nodes including at least a first mobile and a second mobile node, said system comprising:
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a home agent, said home agent transmitting mobile IP messages comprising registration reply messages in response to valid registration request messages; and a home agent database accessible by said home agent, said home agent database containing at least a first data record and a second data record, said first data record identifying a network address and a first port range of globally unique port numbers for said first mobile node, said second data record identifying said network address and a second port range of globally unique port numbers for said second mobile node, wherein said first and second port ranges are disjoint. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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Specification