淺談Wi-Fi 2.4G Control Sideband 通道配置與功能

Wi-Fi是透過2.4GHz或者5GHz的RF信號做傳輸資料，當然有頻段就會有干擾的問題，尤其如果是身處在到處有Wi-Fi設備的都市，使用上就會影響到速度。

In version 5.2.1 of AirOS have this option, varies from channel to channel: frequency in 5180 for example, is displayed UPPER CHANNEL, in the Extension Channel.

The 802.11 standard provides several radio frequency bands for use in Wi-Fi communications, each divided into a multitude of channels numbered at 5 MHz spacing.

The 2.4 GHz band provides the most coverage but transmits data at slower speeds. Wireless range decreases as frequency increases because higher ...

更換Wi-Fi 頻寬：若您當前使用固定40 MHz 頻寬，建議您改至20 / 40 MHz 自動頻寬。固定40 MHz 重疊的頻道較多，傳輸速度並不一定較20 MHz 佳。 避免訊號干擾： ...

The lower frequency of 2.4 GHz is better at passing through solid objects and can cover a wider range than 5 GHz. For comparison across ...

附註：在本示例中，選擇了Lower。如果「Channel（通道）」設定為「Auto ... 附註：在本示例中，選擇了Upper。如果「Channel（通道）」設定為 ...

Wi-Fi bands and channels exist on a variety of frequency bands, 2.4 GHz and 5 GHz being the most widely used, but other bands are available in some countries.

如下圖二。 中心頻率對照於可用頻段2.4-2.5GHz的位置，就會有所謂的below(Lower)/above (upper)channel。channel 組成表可參考下圖三。

Wi-Fi 路由上的Control Sideband设定通道是如何计算的? · 中心频率对照于可用频段2.4-2.5GHz的位置，就会有所谓的below(Lower)/above (upper)channel。