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Communication managing and controlling method for wireless local area network

A technology of wireless local area network and communication management, applied in the field of communication management and control of wireless local area network, can solve the problems such as the decline of communication blocking effect and the inability to completely block communication, achieve stable communication blocking effect, improve information security, reduce The effect of the number of shots

Active Publication Date: 2015-02-04
INST OF INFORMATION ENG CHINESE ACAD OF SCI
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The present invention is a signaling interference method, which aims to solve the problem that the communication blocking effect drops sharply when the existing signaling interference method for sending de-association / de-authentication frames has a large number of APs or STAs to be blocked, and it is impossible to completely block the communication Shortcomings

Method used

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  • Communication managing and controlling method for wireless local area network
  • Communication managing and controlling method for wireless local area network

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Embodiment Construction

[0041] The present invention is signaling interference, but is different from the traditional signaling interference method of sending disassociation / de-authentication frames, but is a signaling-level channel occupation. This method uses the CSMA / CA mechanism of the 802.11 protocol. Under the CSMA / CA mechanism, the sender needs to monitor the channel state before sending. If you wait for a SIFS (Short Interframe Space) or DIFS (DCF Interframe) Space, distributed inter-frame interval) (for example: you need to wait for DIFS before sending data frames, and you need to wait for SIFS before sending ACK frames), and the channel is still idle, then a randomly generated back-off time timer is started, and the timer is decremented to zero In the process, if the channel is still idle, only start sending. If in the process of monitoring the channel, it is found that the channel is busy, it will delay for a period of time before returning to the monitoring state. The blocking device of t...

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Abstract

The present invention discloses a communication managing and controlling method for a wireless local area network. The present method includes that 1) a network card drive of a blocking device is modified so as to enable the blocking device to send blocking frames at intervals no greater than the short interframe space (SIFS); 2) the blocking device scans the surrounding wireless local area network environment, and obtains MAC addresses of an access point (AP) and a terminal (STA) working in a to-be-blocked channel; 3) the blocking device establishes a channel MAC address list including all MAC addresses of all the access points (Aps) and terminals (STA) to be blocked of the channel regarding each channel; and 4) the blocking device fills the MAC address in the channel MAC address list of the channel into a destination address field of a blocking frame and then sends the blocking frame regarding each channel to be blocked. The communication managing and controlling method greatly increases information security of secret units or regions, and has a small effect on the surrounding electromagnetic environment.

Description

Technical field [0001] The invention relates to a communication management and control method of a wireless local area network, belonging to the technical field of wireless communication. technical background [0002] A wireless local area network, or WLAN (Wireless LAN), is a network that uses wireless transmission media for communication. Because WLAN has the characteristics of flexible deployment, simple and easy-to-use, and can well support the mobile Internet needs of portable terminals such as notebooks, tablet computers, and mobile phones, it has quickly become popular in the commercial market. While being widely used, the security issues of WLAN have also attracted the attention of researchers. WLAN not only faces the security vulnerabilities faced by traditional wired networks, but its openness also brings more security risks to it. [0003] Wired networks use twisted-pair wires as transmission media, and the boundaries of their transmission signals are controllable. Ho...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W12/00H04W24/00H04W84/12
CPCH04L63/1466H04L63/1483H04W12/12H04W48/16H04W74/0816H04W84/12
Inventor 朱海涛朱大立祁峰冯维淼范伟
Owner INST OF INFORMATION ENG CHINESE ACAD OF SCI
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