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Wireless LAN and method for implementing quick switching between mobile stations

A wireless local area network, fast handover technology, applied in the field of communication, can solve the problem of prolonging the service interruption time, and achieve the effect of speeding up the handover speed

Active Publication Date: 2006-07-19
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The present invention provides a wireless local area network and a method for realizing fast handover of a mobile station, so as to solve the problem in the prior art that the service interruption time may be prolonged when the mobile station is handed over

Method used

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  • Wireless LAN and method for implementing quick switching between mobile stations
  • Wireless LAN and method for implementing quick switching between mobile stations
  • Wireless LAN and method for implementing quick switching between mobile stations

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Embodiment Construction

[0023] In order to realize the fast switching of the mobile station, the best way is to be able to do no pre-authentication or re-authentication when reassociation. For RSN (Robust Security Network, robust security network) network, the best way is that the mobile station can continue to use the previous encryption material after reassociation, especially the master key, so that the new AP can share the master key of the old AP .

[0024] But for the mobile station, when reassociation from one AP to another AP, the encryption material related to the original AP may have been deleted, and the assumption of master key sharing on the network side cannot guarantee compatibility with the mobile station. The root cause is:

[0025] (1) An AP and its associated mobile stations constitute a BSS (Basic Service Set), identified by a BSS-ID, which is an IEEE 802 MAC address.

[0026] (2) The AP generally uses the BSS-ID to identify its corresponding wireless interface in implementation...

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Abstract

The invention relates to a method for realizing mobile station quick switch in the wireless local network. Said wireless local network comprises a mobile station and access points (AP) for accessing the mobile station into the network. Wherein, each AP and relative mobile station can form a basic server base (BBS); the mobile station and the AP use the encrypt information related with said basic server base mark to protect the spatial interface; several physical AP form a logic AP which share one basic server base mark (BBSS-ID); said mobile station directly uses the encrypt information related with said basic server base mark to protect the spatial interface when said several physical AP are switched. The invention also discloses a wireless local network.

Description

technical field [0001] The invention relates to the field of communication, in particular to a wireless local area network and a method for realizing fast switching of a mobile station in the wireless local area network. Background technique [0002] At present, the IEEE 802.11 series has become the standard of wireless local area network (WLAN), and has been widely supported and applied, and there are demands for large-scale enterprise coverage networking, large-scale community networking and even metropolitan area networking. In such a large-scale WLAN network, a large number of WLAN access point devices (Access Point, AP) need to be deployed, and different APs each cover a specific area, and together form a large area with continuous coverage. Therefore, it is required to support a mobile station (Mobile Terminal, MT) to be able to switch from one AP to another AP while moving in the continuously covered area so as to maintain service continuity. The basic flow of mobile...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/28H04Q7/38H04W12/02H04W36/08H04W84/12
CPCH04W12/02H04W84/12H04W36/08H04W36/0038H04W12/03
Inventor 姚忠辉
Owner HUAWEI TECH CO LTD