Location management server and ethernet-based wireless LAN distribution system having local management server, and embodiment method thereof
First Claim
1. A wireless LAN (Local Access Network) distribution system, which forwards data received from a correspondent node to a destination station among a plurality of stations respectively connected to a plurality of access points, the wireless LAN distribution system comprising:
- a location management server for storing and managing a mapping table as an information table storing IP (Internet Protocol) addresses of the plurality of stations and physical access control addresses of the plurality of access points having the stations located therein, the location management server to identify an access point connected to the destination station to cause only the identified access point, from the plurality of access points, to perform an IP address check of the stations located in the area of the identified access point; and
an edge router for, upon receiving the data from the correspondent node via a communication network, forwarding the received data to the location management server,wherein the location management server identifies the access point connected to the destination station, among the plurality of access points, by checking the IP address of the destination station in the information table,forwards the received data to the identified access point by using the IP address of the destination station and the physical access address of the identified access point, such that the identified access point forwards the received data to the destination station by using the IP address of the destination station;
generates an acknowledgment (Ack) message in response to receiving association information of the identified access point subsequent to updating the information table with the association information regarding a station within the area of the identified access point, and sends the generated Ack message to the identified access point; and
the location management server including a MAC (Media Access Control) frame generator for generating a MAC frame destined for the identified access point having the destination station located therein.
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Accused Products
Abstract
A wireless LAN distribution system, forwarding data received from a correspondent node to a station connected to an access point, includes: a location management server (LMS) for storing and managing a mapping table as an information table storing IP addresses of stations and physical access control addresses of the access points having the stations located therein, and causing the access points to perform an IP address check for the stations located in their area; an edge router for forwarding the data to the LMS using the physical access control address of the mapping table; and an access point for checking the physical access control address of the access point and the IP address of the destination station, and forwarding the data from the correspondent node.
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Citations
14 Claims
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1. A wireless LAN (Local Access Network) distribution system, which forwards data received from a correspondent node to a destination station among a plurality of stations respectively connected to a plurality of access points, the wireless LAN distribution system comprising:
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a location management server for storing and managing a mapping table as an information table storing IP (Internet Protocol) addresses of the plurality of stations and physical access control addresses of the plurality of access points having the stations located therein, the location management server to identify an access point connected to the destination station to cause only the identified access point, from the plurality of access points, to perform an IP address check of the stations located in the area of the identified access point; and an edge router for, upon receiving the data from the correspondent node via a communication network, forwarding the received data to the location management server, wherein the location management server identifies the access point connected to the destination station, among the plurality of access points, by checking the IP address of the destination station in the information table, forwards the received data to the identified access point by using the IP address of the destination station and the physical access address of the identified access point, such that the identified access point forwards the received data to the destination station by using the IP address of the destination station; generates an acknowledgment (Ack) message in response to receiving association information of the identified access point subsequent to updating the information table with the association information regarding a station within the area of the identified access point, and sends the generated Ack message to the identified access point; and the location management server including a MAC (Media Access Control) frame generator for generating a MAC frame destined for the identified access point having the destination station located therein. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A location management server, which is for a wireless LAN distribution system for forwarding data received from an edge router of a correspondent node to a destination station among a plurality of stations respectively connected to a plurality of access points, the location management server comprising:
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a mapping table manager for, upon receiving an association message from an access point, analyzing an IP address of the destination station and a MEDIA access control (MAC) address of the access point having the station located therein from a received association message, managing analyzed information through a mapping table as an information table, and generating an acknowledgment (Ack) message in response to the received association message, and sending the generated Ack message to the access point; an IP address checker for checking the IP address of the destination station using the data forwarded from the outer router of the correspondent node to search the MAC address to identify an access point connected to the destination station among the plurality of access points; and a MAC frame generator for, upon receiving information from the IP address checker and the mapping table manager, generating a MAC frame destined for the identified access point having the destination station located therein by using the IP address of the destination station and the searched MAC address, and outputting the MAC frame to cause only the identified access point, from the plurality of access points, to perform an IP address check of the stations located in the area of the identified access point.
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10. A method for a wireless LAN distribution system, which is for forwarding data received from an edge router of a correspondent node to a station connected to an access point, the method comprising:
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(a) upon receiving an association-related message from the station, the access point associating the station in its area according to a received association message; (b) checking an IP address of the station and a media access control (MAC) address of an access point having the station located therein from the association message including information on the associated station, then managing a mapping table being an information table based on the checked addresses, and sending an acknowledgement signal for the received association message to the access point; (c) upon receiving data destined for a specific station from the edge router of the correspondent node, checking the IP address of the received data using the mapping table to search the MAC address of an access point identified having the specific station located therein, and to cause only the identified access point, from a plurality of access points, to perform an IP address check of the stations located in the area of the identified access point by checking the IP address of the destination station in the only access point; and (d) generating a MAC frame based on only the IP address and the searched MAC address, and forwarding the generated physical access control frame to the destination station via only the access point using a computer. - View Dependent Claims (11, 12, 13, 14)
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Specification