Frequency point switching anti-interference wireless local area network communication method and device

A technology of wireless local area network and communication method, which is applied in the field of frequency point switching anti-jamming wireless local area network communication devices, which can solve the problems that interference sources are difficult to predict and control, and there is no perfect solution, so as to reduce the impact of communication speed and reliability, and achieve high compatibility performance, avoiding the effect of communication interruption

Active Publication Date: 2019-12-20
PEKING UNIV
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  • Application Information

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Problems solved by technology

However, the premise of these studies is that the source of interference is a known protocol. In many cases, the source

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  • Frequency point switching anti-interference wireless local area network communication method and device
  • Frequency point switching anti-interference wireless local area network communication method and device
  • Frequency point switching anti-interference wireless local area network communication method and device

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Embodiment Construction

[0066] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0067] refer to figure 1 , which shows a schematic structural diagram of a frequency point switching anti-jamming wireless LAN communication GRT-IM system according to an embodiment of the present invention, the system includes an anti-jamming access point and a plurality of anti-jamming terminals, the anti-jamming access point and The anti-interference terminals are developed based on the IEEE 802.11 software radio platform GRT system.

[0068] The anti-jamming access point of the embodiment of the present invention is in a core position in the network, determines the communication frequency of the network and provides network access services, and the anti-jamming access point can be implemented in a WIFI wireless router. Anti-j...

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Abstract

The invention provides a frequency point switching anti-interference wireless local area network communication method and device, and the method comprises one anti-interference access point and a plurality of anti-interference terminals, and the anti-interference access point and the anti-interference terminals are developed based on an IEEE 802.11 software radio platform GRT system. According tothe invention, idle channels with less interference are selected for communication by using wireless spectrum sensing, so that the influence of busy channels or channels with more interference on thecommunication quality is effectively reduced; through random frequency point switching among a plurality of channels, communication interruption caused by burst interference in a single channel is avoided; besides, even if a channel in communication is interrupted by sudden interference, the alternative channel list carried in the beacon frame can enable the anti-interference access point and theterminal to be switched to other channels at the same time for continuous communication, so that the robustness of the system is improved; on the premise of having high compatibility with WiFi, compared with the prior art, the influence of interference in a channel on the communication rate and reliability is remarkably reduced.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a frequency point switching anti-interference wireless local area network communication method and a frequency point switching anti-interference wireless local area network communication device. Background technique [0002] In modern society, wireless communication has been widely used and developed rapidly because of its convenience. The wireless local area network 802.11 protocol (also known as WiFi) is a commonly used wireless communication protocol for networking of mobile phones, laptops, smart TVs and other devices. WiFi networks have been widely deployed in various indoor and outdoor places such as homes, companies, schools, and airports, bringing convenience to people's lives. [0003] However, with the continuous growth of WiFi network equipment and usage, the problems of insufficient spectrum resources and interference are becoming more and more...

Claims

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Application Information

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IPC IPC(8): H04W16/10H04W36/00H04W84/12H04B17/382
CPCH04W16/10H04W36/0088H04W84/12H04B17/382
Inventor 王韬丁博岩
Owner PEKING UNIV
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