Smart channel switching method based on history channel data, and terminal device and readable storage medium thereof

A smart channel switching method based on history channel data, loaded by a device before executing the following steps, and the method comprising:

• capturing a history current noise value of each channel of a wireless device, and obtaining a channel healthrate according to the history current noise value;
• obtaining a health ratio by the current channel healthrate and the best channel healthrate,
• calculating an allowable transmission capacity of each channel according to the current noise value, said allowable transmission capacity is a modulation and coding scheme (MCS) data rate corresponding to the current noise value in a current signal-to-noise ratio of the channel, wherein the current signal-to-noise ratio is equal to a predetermined signal-to-noise ratio of the wireless device in its corresponding channel deducting a difference of the current noise value minus a minimum noise value of the wireless device, and plus a current equivalent isotropically radiated power (EIRP),
• obtaining a maximum transmission quantity of the wireless device calculating a channel healthrate according to the transmission capacity and the maximum transmission quantity,
• comparing the health ratio with a threshold, and switching the connection of the wireless device to another channel if the health ratio reaches the threshold.