Wireless communication system capable of changing dynamically charge rate and wireless communication unit usable therewith

A wireless communication system having a plurality of wireless controllers for controlling a mobile apparatus, comprising:

• an identification device adapted to identify a charge rate for communication within each wireless cell controlled by the wireless controller;
• a connection device adapted to connect a first wireless controller and the mobile apparatus in accordance with a request from the mobile apparatus;
• a receiving device adapted to receive charge rate information transmitted from the mobile apparatus;
• a decision device adapted to decide a second wireless controller to be connected to said mobile apparatus based on the charge rate information received by said receiving device and the charge rate identified by said identification device;
• and
• a control device adapted to control to connect the second wireless controller decided by said decision device and the mobile apparatus,
• wherein the mobile apparatus connects and communicates with the first wireless controller and second wireless controller.