Controlling hand-off in a mobile node with two mobile IP clients
First Claim
1. A method of operating a mobile node from a home network while visiting a local network, the mobile node including a local mobility agent module and a remote mobility agent module to interoperate with a communications network including a plurality of access nodes and a plurality of roaming nodes, a set including multiple access nodes being associated with at least one of said roaming nodes in said communications network, different ones of said access nodes being associated with different roaming nodes, the method comprising:
- operating said local mobility agent module to handle a handoff between two of said access nodes in said visited local network, said two of said access nodes including a first access node and a second access node; and
operating said remote mobility agent module to handle handoff between two of said roaming nodes in said visited local network, said two of said roaming nodes including a first roaming node and a second roaming node located in said visited local network.
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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.
41 Citations
20 Claims
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1. A method of operating a mobile node from a home network while visiting a local network, the mobile node including a local mobility agent module and a remote mobility agent module to interoperate with a communications network including a plurality of access nodes and a plurality of roaming nodes, a set including multiple access nodes being associated with at least one of said roaming nodes in said communications network, different ones of said access nodes being associated with different roaming nodes, the method comprising:
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operating said local mobility agent module to handle a handoff between two of said access nodes in said visited local network, said two of said access nodes including a first access node and a second access node; and operating said remote mobility agent module to handle handoff between two of said roaming nodes in said visited local network, said two of said roaming nodes including a first roaming node and a second roaming node located in said visited local network. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 14, 15, 16, 17, 20)
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11. A method of operating a mobile node including a local mobility agent module and a remote mobility agent module to interoperate with a communications network including a plurality of access nodes and a plurality of roaming nodes, a set including multiple access nodes being associated with at least one of said roaming nodes in said communications network, different ones of said access nodes being associated with different roaming nodes, the method comprising:
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operating said local mobility agent module to handle a handoff between two of said access nodes, said two of said access nodes including a first access node and a second access node; operating said remote mobility agent module to handle handoff between two of said roaming nodes, said two of said roaming nodes including a first roaming node and a second roaming node operating said local mobility agent module to communicate information from said local mobility agent module indicating assignment of a new roaming address to said remote mobility agent module, said information indicating assignment of a new roaming address to said mobile node; receiving from one of said two access nodes handoff information used to control handoff procedures at said mobile node, said handoff information including the address of a roaming node associated with one of said two access node; and wherein said communications network further includes a DHCP server coupled to said access nodes, said mobile node further including a DHCP client module, the method further comprising; operating the DHCP client module to configure said interface. - View Dependent Claims (12, 13)
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18. A method of operating a mobile node including a local mobility agent module and a remote mobility agent module to interoperate with a communications network including a plurality of access nodes and a plurality or roaming nodes, a set including multiple access nodes being associated with at least one of said roaming nodes in said communications network, different ones of said access nodes being associated with different roaming nodes, the method comprising:
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operating said local mobility agent module to handle a handoff between two of said access nodes, said two of said access nodes including a first access node and a second access node; operating said remote mobility agent module to handle handoff between two of said roaming nodes, said two of said roaming nodes including a first roaming node and a second roaming node operating said local mobility agent module to communicate information from said local mobility agent module indicating assignment of a new roaming address to said remote mobility agent module, said information indicating assignment of a new roaming address to said mobile node; receiving from one of said two access nodes, handoff information used to control handoff procedures at said mobile node, said handoff information including the address of a roaming node associated with one of said two access node, said handoff information being transmitted in a mobile IP foreign agent advertisement message.
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19. A communications system comprising:
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a local communications network including a plurality of access nodes and a plurality of roaming nodes, a set of access nodes including multiple access nodes being associated with at least one of said roaming nodes in said local communications network, different ones of said access nodes being associated with different roaming nodes; a mobile node from a home network being coupled to one of said access nodes in said local communications network, said local communications network being a visited local network, the mobile node including; a local mobility agent module including means for handling a handoff between two of said access nodes in said visited local network; and a remote mobility agent module including means for handling a handoff between two of said roaming nodes in said visited local network.
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Specification