Method and apparatus for conserving home agent resources in mobile IP deployment
First Claim
1. In a wireless communication system supporting mobile IP, a method comprising:
- determining a release candidate set based on active mobile IP sessions supported by a home agent;
identifying an overload condition at the home agent; and
for each mobile node in the release candidate set performing a release attempt procedure.
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Accused Products
Abstract
A method and apparatus for conserving home agent resources in mobile Internet Protocol (IP) deployment is disclosed. In a wireless communication system supporting mobile IP, a release candidate set is generated and updated during operation of the network. When an inactivity timer associated with a mobile node satisfies a condition, the mobile node is listed in the release candidate set. Successful communication with the mobile node results in removal from the release candidate set. The release candidate set is accessed when a home agent desires to reclaim resources on an overload condition.
173 Citations
17 Claims
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1. In a wireless communication system supporting mobile IP, a method comprising:
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determining a release candidate set based on active mobile IP sessions supported by a home agent;
identifying an overload condition at the home agent; and
for each mobile node in the release candidate set performing a release attempt procedure. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A home agent for use in a wireless communication system supporting mobile IP, the home agent comprising:
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a database for storing a release candidate set, the release candidate set listing inactive mobile IP sessions supported by the home agent;
a processing unit coupled to the database, the processing unit operative to update the release candidate set; and
a plurality of inactivity timers, each of the plurality of inactivity timers associated with a mobile IP session supported by the home agent. - View Dependent Claims (8, 9, 10)
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11. An apparatus operative in a wireless communication system supporting mobile IP, comprising:
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means for determining a release candidate set based on active mobile IP sessions supported by a home agent;
means for identifying an overload condition at the home agent; and
means for performing a release attempt procedure for each mobile node in the release candidate set.
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12. A computer program for use in a wireless communication system supporting mobile IP, the computer program operative for:
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storing a release candidate set in a database, the release candidate set listing inactive mobile IP sessions supported by the home agent;
updating the release candidate set.
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13. A computer program for use in a wireless communication system supporting mobile IP, the computer program operative to:
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determine a release candidate set based on active mobile IP sessions supported by a home agent;
identify an overload condition at the home agent; and
perform a release attempt procedure for each mobile node in the release candidate set.
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14. A wireless communication system supporting mobile IP, comprising:
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an IP network;
a home agent, the home agent comprising;
a database for storing a release candidate set, the release candidate set listing inactive mobile IP sessions supported by the home agent;
a processing unit coupled to the database, the processing unit operative to update the release candidate set; and
a plurality of inactivity timers, each of the plurality of inactivity timers associated with a mobile IP session supported by the home agent;
a mobile node;
a foreign agent coupled to the IP network, the foreign agent supporting the mobile node.
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15. A database in a wireless communication system supporting mobile IP, comprising:
a release candidate set having a plurality of entries, each entry identifying an inactive mobile IP session for a home agent. - View Dependent Claims (16, 17)
Specification