Wireless bandwidth selecting method and system based on WLAN wireless bandwidth assessment

Abstract

The invention provides a wireless bandwidth selecting method based on WLAN wireless bandwidth assessment. The wireless bandwidth selecting method based on WLAN wireless bandwidth assessment includes the steps that wireless access points of wireless signals are scanned and output within a preset time period; the number of the wireless access points with the first working frequency band and the wireless access points with the second working frequency band is counted; the intensity of the wireless signals output from other wireless access points around the main wireless access point is detected; a first channel bandwidth or a second channel bandwidth is automatically selected according to the number of the wireless access points with the first working frequency band and the wireless access points with the second working frequency band, and the intensity of the wireless signals output from the wireless access points, with the first working frequency band and the second working frequency band, around the main wireless access point. The optimal bandwidth can be selected automatically according to changes of surrounding wireless network environment; when surrounding wireless interference is strong, the bandwidth is automatically converted to be 40 MHz, and high-rate transmission is guaranteed; when surrounding wireless interference is weak, the bandwidth is automatically converted to be 20 MHz, and the basic wireless communication quality is guaranteed.

Description

technical field [0001] The invention belongs to the field of wireless communication, and relates to a wireless bandwidth selection method and system, in particular to a wireless bandwidth selection method and system based on WLAN wireless bandwidth evaluation. Background technique [0002] The wireless bandwidth is mainly divided into two types: 20MHZ and 40MHZ. 802.11n supports 20MHz and 20MHZ / 40MHz channels. The bandwidth of 20MHZ was used in the previous standard, and the bandwidth of 20 / 40MHZ is adopted in 802.11n. The available channel bandwidth provided by the 40MHz channel is more than twice that of the two 802.11 legacy channels. The 802.11n standard supports 20MHz and 40MHz channels, of which The 40MHz channel will be the widest channel, consisting of two adjacent, legacy 20MHz spectrum channels; of course, only 20MHz channels can be used, this is determined by the specific situation. The signal penetration of 20mhz is strong, but it may cause the download speed t...

AI Technical Summary

Problems solved by technology

[0010] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a wireless bandwidth selection method and system based on WLAN wireless bandwidth evaluation, which is used to solve the problems in the prior art when the existing wireless network environment is relatively complicated. Wireless data packets occupy the wireless bandwidth, and the wireless interference is large, causing wireless network instability, high wireless packet loss rate and other defects, and the wireless router cannot automatically select the wireless bandwidth.

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