A wireless communication system capable of updating current reference channel information is provided. The wireless communication system includes a control apparatus and a plurality of reference information generating apparatuses. The wireless communication range of the control apparatus covers a plurality of regions. The reference information generating apparatuses, respectively placed in the regions, respectively report their reference position information and reference channel information to the control apparatus. When the control apparatus receives current position information from a target mobile communication apparatus, a current region among the regions is determined according to the current position information, and the control apparatus updates reference channel information according to the current region to the target mobile communication apparatus in real time.