MOBILE NETWORK SYSTEM AND METHOD FOR PROCESSING IP HANDOFF THEREOF
First Claim
1. A mobile network system comprising:
- a plurality of mobile agents operating as a home agent with respect to a service-subscribed mobile node, and operating as a foreign agent with respect to a mobile node service-subscribed to another mobile agent and moving into a its own mobile network region, such that data is delivered between the mobile node and a correspondent mobile node in administrating mobile network region, respectively; and
a mobile agent platform including a signal path for processing handoff of the mobile agents and the mobile node, and relaying a handoff registration request message and a handoff registration response message between a mobile agent operating as a home agent with respect to a mobile node and a mobile agent operating as a foreign agent with respect to a mobile node through the signal path.
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Accused Products
Abstract
Provided are a mobile network system capable of processing a high-speed handoff by dividing into a data packet path between mobile nodes and a handoff packet path of the mobile node, and a method for processing IP handoff thereof. The system includes a MAP broadcasting a handoff registration request and reply between a foreign agent and a home agent, and an additional handoff signal path between the MAP and a mobile agent operating as a foreign agent and a home agent by means of a HAAP and VPN technology to be physically distinguishable from a data path. Therefore, limitation in a head of line can be resolved and the IP handoff can be promptly provided.
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Citations
24 Claims
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1. A mobile network system comprising:
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a plurality of mobile agents operating as a home agent with respect to a service-subscribed mobile node, and operating as a foreign agent with respect to a mobile node service-subscribed to another mobile agent and moving into a its own mobile network region, such that data is delivered between the mobile node and a correspondent mobile node in administrating mobile network region, respectively; and a mobile agent platform including a signal path for processing handoff of the mobile agents and the mobile node, and relaying a handoff registration request message and a handoff registration response message between a mobile agent operating as a home agent with respect to a mobile node and a mobile agent operating as a foreign agent with respect to a mobile node through the signal path. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method for processing handoff by a mobile agent platform in a mobile network system with a plurality of mobile agents and a mobile agent platform, the method comprising:
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receiving a handoff registration request message of a mobile node from a mobile agent; determining whether an entry of the registration-requested mobile node is in a visitor list or not; updating a corresponding entry based on contents of the received message if the entry is in the visitor list; adding an entry of a corresponding mobile node to a temporary list by copying the received message if the entry is not in the visitor list; and after performing the updating and the adding, delivering the received handoff registration request message in to a mobile agent corresponding to a home agent of a corresponding mobile node. - View Dependent Claims (15, 16, 17, 18)
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19. The method of 18, wherein the the delivering the received handoff registration response message comprises delivering the handoff registration response message into a mobile agent corresponding to a previous foreign agent of the mobile node if the registration of the mobile node is permitted and a corresponding entry is in the temporary list.
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20. The method of 18, wherein the delivering the received handoff registration response message comprises delivering the response message into a current foreign agent of the mobile node if the registration of the mobile node is not permitted, or if an entry of a corresponding mobile node is not in the temporary list although the registration of the mobile node is permitted.
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21. A method of processing handoff by a mobile agent operating as a home agentin a mobile network with a plurality of mobile agents and a mobile agent platform, the method comprising:
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receiving a handoff registration request message from the mobile agent platform; determining whether handoff registration with respect to a registration-requested mobile node is permitted or not; generating an entry for a corresponding mobile node in a visit list and copying a CoA and an IP address of a foreign agent from the message if the registration is permitted; and generating a handoff registration response message with the determination result of whether the registration is permitted or not to deliver it to the mobile agent platform.
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22. A method of processing handoff by a mobile agent operating as a foreign agent in a mobile network with a plurality of mobile agents and a mobile agent platform, the method comprising:
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receiving a handoff registration request message; adding an entry of a corresponding mobile node to a temporary list and erasing an entry of a corresponding mobile node from a visitor list if the handoff registration request message is transmitted from the mobile agent platform; and delivering the handoff registration request message into the mobile agent platform if the handoff registration request message is not transmitted from the mobile agent platform. - View Dependent Claims (23, 24)
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Specification