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Method and system for roaming in 802.11 wireless network

A wireless area network and network technology, applied in the field of fast roaming in the 802.11 wireless network, can solve problems such as poor service quality, loss of ability to connect to the network, and long delay time

Inactive Publication Date: 2006-10-18
GEMTEK SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to limitations in the design of the WLAN system, when the user device moves from the coverage of the connected AP to the coverage of another AP, it needs to disconnect from the original AP and then connect to another AP. link
Between the process of disconnecting and starting the connection, the user device will lose the ability to connect to the network for a period of time. For some communication services, such as Internet telephony (VoIP), video conferencing or real-time video streaming, This loss of connection will result in poor quality of service
Roaming across the coverage of adjacent APs is not suitable for portable devices because of the long delay time of roaming

Method used

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  • Method and system for roaming in 802.11 wireless network
  • Method and system for roaming in 802.11 wireless network
  • Method and system for roaming in 802.11 wireless network

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Embodiment Construction

[0019] refer to figure 1 , wherein a preferred embodiment of an 802.11 wireless local area network (WLAN) system is presented. A network management server (network management server) 11 is used to control the system. Generally speaking, the setting of the network is to connect several network access points (access points; APs) to the Ethernet network through a gateway (gateway). figure 1 In the preferred embodiment presented, a plurality of APs 140-147 are respectively connected to a gateway 130-132, and the gateways 130-132 may be AP control gateways (APcontroller gateway). The gateways 130 - 132 are directly or indirectly connected to the network management server 11 through the Internet, and the network management server 11 is also coupled to the authentication server 12 . Each network access device in this system can control the ability of the user device to access the Internet according to the instructions of the network management server 11, and the authorization serve...

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Abstract

A method of roaming in 802.11 radio network includes setting dual- transceiver on user device as one transceiver being used to transmit and receive data packet with currently connected access register and another one being used to search another access register and to prepare to connect to it, connecting transceiver in search mode to a new access register to shorten delay time when communication quality is decreased under preset level and using transceiver originally in connection mode to start searching another suitable access register.

Description

technical field [0001] The present invention relates to a method for fast roaming in an 802.11 wireless network. A user device, particularly a method for fast roaming in an 802.11 wireless network using a user device with dual transceivers. Background technique [0002] In recent years, IEEE 802.11 wireless local area network (WLAN) technology has become more and more popular, and its application level also widely exists in people's daily life, and the computer is mainly used as a tool for accessing the network. However, due to users' requirements for high mobility, there are more and more portable devices with Internet access capabilities on the market, such as notebook computers, personal digital assistants, smart phones, and WiFi phones, etc. , with these portable devices, users can access the Internet anywhere. [0003] Because the WLAN communication architecture is based on the local area network infrastructure, user devices can connect to the network through APs, and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/28
Inventor 强刚王立中陈鸿文
Owner GEMTEK SYST