Controlling hand-off in a mobile node with two mobile IP clients
First Claim
Patent Images
1. A method of operating a mobile node, the method comprising:
- storing a first access node address corresponding to a first access node and a first roaming node address corresponding a first roaming node in a memory; and
comparing a received access node address and a received roaming node address to the first access node address and the first roaming node address, respectively, to detect;
a local handoff between the first access node and a second access node in an access network in which said mobile node is located without a handoff between roaming nodes or a remote handoff including a handoff between the first roaming node and a second roaming node in said access network, said access network being coupled to a home network which includes a home agent corresponding to said mobile node.
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Abstract
Extending Mobile IP to support both local and remote access by using two MIP client stacks in the end node, a roaming Node in the local access network, a standard Home Agent in the remote network. Messages between the AR and the MN, and between the internal modules of the MN, are then used to control hand-off for each MIP client and to enable backwards compatibility with legacy remote access clients.
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Citations
41 Claims
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1. A method of operating a mobile node, the method comprising:
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storing a first access node address corresponding to a first access node and a first roaming node address corresponding a first roaming node in a memory; and comparing a received access node address and a received roaming node address to the first access node address and the first roaming node address, respectively, to detect;
a local handoff between the first access node and a second access node in an access network in which said mobile node is located without a handoff between roaming nodes or a remote handoff including a handoff between the first roaming node and a second roaming node in said access network, said access network being coupled to a home network which includes a home agent corresponding to said mobile node. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A mobile node, comprising:
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means for storing a first access node address corresponding to a first access node and a first roaming node address corresponding a first roaming node; and means for comparing a received access node address and a received roaming node address to the first access node address and the first roaming node address, respectively, to detect;
a local handoff between the first access node and a second access node in an access network in which said mobile node is located without a handoff between roaming nodes or a remote handoff including a handoff between the first roaming node and a second roaming node in said access network, said access network being coupled to a home network which includes a home agent corresponding to said mobile node. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A mobile node, comprising:
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memory for storing a first access node address corresponding to a first access node and a first roaming node address corresponding a first roaming node; and a module for comparing a received access node address and a received roaming node address to the first access node address and the first roaming node address, respectively, to detect;
a local handoff between the first access node and a second access node in an access network in which said mobile node is located without a handoff between roaming nodes or a remote handoff including a handoff between the first roaming node and a second roaming node in said access network, said access network being coupled to a home network which includes a home agent corresponding to said mobile node. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31)
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32. A device comprising circuitry configured to:
compare a received access node address and a received roaming node address to a first access node address and a first roaming node address, respectively, to detect;
a local handoff between the first access node and a second access node in an access network in which said device is located without a handoff between roaming nodes or a remote handoff including a handoff between the first roaming node and a second roaming node in said access network, said access network being coupled to a home network which includes a home agent corresponding to said mobile node.- View Dependent Claims (33, 34, 35, 36, 37, 38, 39, 40, 41)
Specification