Wireless communication system and wireless communication method

A wireless communication system configured to divide a frequency channel into three segments and perform relay by using different segments in respective relay sections, the wireless communication system comprises:

• a processor;
• a memory storage;
• and
• a relay station for performing the relay;
• wherein the processor and the memory storage are configured to execute software instructions embodied within the relay station;
• and wherein the relay station includes
• a segment control unit which is configured to control a first scheme or a second scheme, wherein in the first scheme, one segment among the three segments is used in each relay section, wherein in the second scheme, two segments are used in the emphasized direction among the three segments used for an uplink section and a downlink section in each of the relay sections when a throughput in either an upstream direction or a downstream direction is emphasized;
• and
• a manipulating unit which is configured to select the first scheme or the second scheme,
• wherein the segment control unit determines whether the selected operation by the manipulating unit is the first scheme or the second scheme,
• wherein the segment control unit performs a start-up in the second scheme, and determines a communication quality when it is determined that the second scheme is selected,
• wherein the segment control unit continues to perform in the second scheme when the communication quality is equal to or higher than a predetermined quality, and
• wherein the segment control unit switches to the first scheme and increases output intensity when the communication quality has not reached the predetermined quality.