Network node and communication system
First Claim
1. A network system which is built such that an access node connected with a terminal and a network are connected by a relay node, said network system including an authentication node with which said terminal can communicate and which assigns said terminal an address associated with said network, wherein the address assigned to said terminal is mapped to identification code of said relay node and stored on said access node.
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Accused Products
Abstract
The disclosed invention provides a network system that achieves connecting a terminal to a plurality of networks simultaneously and forwarding packets correctly. The network system is built such that an access node connected with a terminal and a network are connected by a relay node and includes an authentication node with which the terminal can communicate and which assigns the terminal an address associated with the network. The address assigned to the terminal is mapped to identification code of the relay node and stored on the access node.
113 Citations
13 Claims
- 1. A network system which is built such that an access node connected with a terminal and a network are connected by a relay node, said network system including an authentication node with which said terminal can communicate and which assigns said terminal an address associated with said network, wherein the address assigned to said terminal is mapped to identification code of said relay node and stored on said access node.
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8. A network system comprising networks providing information to terminals, access nodes connecting with said terminals, relay nodes by which said access nodes and said networks are connected respectively, and authentication nodes which authenticate the user of a terminal to permit access to one of said networks,
wherein a terminal submits an authentication request to the authentication node of a network to which it needs to have access and a communication path is established between said terminal and the network when the authentication is completed, wherein an access node manages mapping between an address assigned to a terminal and the address of a relay node, using a user authentication packet transmitted from one of said authentication nodes, and wherein a relay node manages mapping between an address assigned to a terminal and the address of an access node, using a user authentication packet transmitted from one of said authentication nodes.
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10. An access node which connects a terminal to a relay node connected to a network,
said access node mapping and storing an address associated with said network and assigned to said terminal and identification code of said relay node, and said access node forwarding a data packet transmitted from said terminal to said network to said relay node whose identification code has been stored, mapped with the address assigned to said terminal.
Specification