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Switching method and equipment in radio local netwrok environment

A technology of wireless local area network and switching equipment, which is applied in the field of Internet control packet protocol messages, and can solve the problems of inability to apply traditional switching methods, waste of time and resources, etc.

Inactive Publication Date: 2004-07-21
SAMSUNG ELECTRONICS CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, it is basically impossible to apply the conventional switching method to various fields such as VoIP-based video telecommunications, video conferencing, or moving image transmission that require real-time communication
[0022] In a small WLAN environment of a network composed of various BSSs, including some routers and often performing handover operations by many mobile nodes accessing the network, the traditional handover method will cause waste of time and resources

Method used

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  • Switching method and equipment in radio local netwrok environment
  • Switching method and equipment in radio local netwrok environment
  • Switching method and equipment in radio local netwrok environment

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Embodiment Construction

[0040] image 3 It is a fast switching method in a wireless local area network (WLAN) environment according to an exemplary embodiment of the present invention.

[0041] see image 3 , when the mobile node 310 moves from BSS1 to BSS2, L2 triggering occurs in BSS2. According to the present invention, when the mobile node 310 is activated on BSS1, a DIT information request message is multicast to the access router (PAR) 320 of BSS1. Next, the PAR 320 transmits a DIT Information Response message to the mobile node 310 in response to the received DIT Information Request message, and the mobile node 310 stores the DIT information received from the PAR 320 . Thus, the mobile node 310 is able to identify the BSSID of the new router (NAR) 330 when an L2 trigger occurs. After that, the mobile node 310 obtains header information by searching DIT information of the identified BSSID. The mobile node 310 generates a care-of address using the header information of the NAR 330, and perfo...

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Abstract

Provided are a handover method and apparatus in a WLAN environment and an ICMP message used in such a WLAN environment. The handover method involves a) issuing a request for distributed information table (DIT) information, which is network information on access routers, to an access router of a Basic Service Set that a mobile node belongs to when booted; b) receiving DIT information from the access router and storing the received DIT information; and c) performing binding update using the stored DIT information.

Description

[0001] This application claims priority from Korean Patent Application No. 2002-87938 filed with the Korean Intellectual Property Office on December 13, 2002, which application is incorporated by reference in its entirety. technical field [0002] The device and method of the present invention relate to a handover method and equipment in a wireless local area network (WLAN) environment and an Internet Control Message Protocol (ICMP) message for the WLAN environment. Background technique [0003] The Internet has become the most important information infrastructure in the information society we live in. Since the appearance of the Internet, the number of Internet users and Internet supporting equipment have increased rapidly. In response to this situation, version 6 of the Internet Protocol (Ipv6) has been developed to address the shortage of IP addresses and to ensure routing efficiency, flexibility, and quality of service (QoS), and it is currently expected that this produc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/46H04L12/28H04L12/56H04W36/12H04W48/14H04W84/12
CPCH04W36/12H04W48/14H04W84/12H04W8/04H04W4/06
Inventor 金坪洙
Owner SAMSUNG ELECTRONICS CO LTD
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