CONTROLLING HAND-OFF IN A MOBILE NODE WITH TWO MOBILE IP CLIENTS
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Accused Products
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
21 Claims
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1. (canceled)
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2. A method of operating a mobile node, 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; 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;
i) a local handoff between the first access node and a second access node in an access network in which the mobile node is located without a handoff between roaming nodes or ii) 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 (HA) corresponding to the mobile node. - View Dependent Claims (3, 4, 5, 6, 7)
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8. 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;
i) a local handoff between the first access node and a second access node in an access network in which the mobile node is located without a handoff between roaming nodes or ii) 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 (HA) corresponding to the mobile node. - View Dependent Claims (9, 10, 11, 12, 13)
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14. 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;
i) a local handoff between the first access node and a second access node in an access network in which the mobile node is located without a handoff between roaming nodes or ii) a remote handoff including a handoff between the first roaming node and a second roaming node in the access network, said access network being coupled to a home network which includes a Home Agent (HA) corresponding to the mobile node. - View Dependent Claims (15, 16, 17, 18)
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19. A device comprising:
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circuitry for implementing instructions; and memory having instructions for controlling the circuitry 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;
i) a local handoff between the first access node and a second access node in an access network in which the device is located without a handoff between roaming nodes or ii) a remote handoff including a handoff between the first roaming node and a second roaming node in the access network, the access network being coupled to a home network which includes a Home Agent (HA) corresponding to a mobile node. - View Dependent Claims (20, 21)
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Specification