Channel selecting method and system thereof

A channel selecting system, which is configured to communicate with a client, the channel selecting system comprising:

• an access point;
• a memory unit comprising a channel state recording table, wherein the channel state recording table corresponds to a plurality of states of a plurality of communication channels;
• and
• a controller signally connected to the access point and the memory unit, and configured to implement a channel selecting method comprising:
• transmitting a channel preference query message to the access point, and configuring the access point to return a plurality of channel preference values of the access point, wherein the channel preference values correspond to the communication channels;
• determining whether a previous channel selecting time of the access point matches with a default time, wherein the previous channel selecting time is a time difference between a present time and a most recent time when the access point executes a channel selection;
• reading the channel state recording table from the memory unit when the previous channel selecting time matches with the default time;
• scanning the communication channels to obtain a present channel information, wherein the present channel information comprises a present utilization and a present interference state;
• updating the channel preference values to generate a plurality of updated channel values according to the channel state recording table and the present channel information;
• and
• configuring the access point to select one of the communication channels to communicate with the client according to the updated channel values.