Transmitter and transmission control method ,and receiver and reception control method

A transmission control method for a transmission apparatus that uses a first channel through which data is transmitted and a second channel on which power control is performed to transmit said data, said transmission control method characterized by comprising:

• a transmission power controlling step for controlling the transmission power of said second channel;
• a training step for carrying out training to obtain correlation information that correlates the reception quality of said first channel transmitted from a reception apparatus for receiving said data and the transmission power of said second channel;
• a predicting step for calculating a predicted value of the reception quality of said first channel using the transmission power of said second channel based on said correlation information;
• and
• a transmission controlling step for controlling the transmission of said data through said first channel based on the predicted value of the reception quality of said first channel.

A program for making a computer execute a transmission control process for a transmission apparatus that uses a first channel through which data is transmitted and a second channel on which power control is performed, and transmits said data, said program characterized by comprising:

• a transmission power controlling step for controlling the transmission power of said second channel;
• a training step for carrying out training to obtain correlation information that correlates the reception quality of said first channel transmitted from a reception apparatus for receiving said data and the transmission power of said second channel;
• a predicting step for obtaining a predicted value of the reception quality of said first channel using the transmission power of said second channel based on said correlation information;
• and
• a transmission controlling step for controlling the transmission of said data through said first channel based on the predicted value of the reception quality of said first channel

A reception apparatus that uses a first channel through which data is transmitted and a second channel on which power control is performed, in order to receive said data transmitted from a transmission apparatus for transmitting said data, said reception apparatus characterized by comprising:

• reception quality obtaining means for obtaining the reception quality of said first channel;
• reception quality transmitting means for transmitting the reception quality of said first channel to said transmission apparatus;
• power control information transmitting means for transmitting power control information that controls the transmission power of said second channel to said transmission apparatus;
• extracting means for extracting transmission control information that controls transmission of the reception quality of said first channel from the data of said second channel transmitted from said transmission apparatus;
• and
• transmission controlling means for controlling the transmission of the reception quality of said first channel based on said transmission control information.

A reception control method for a reception apparatus that uses a first channel through which data is transmitted and a second channel on which power control is performed, and receives said data transmitted from a transmission apparatus for transmitting said data, said reception control method characterized by comprising:

• a reception quality obtaining step for obtaining the reception quality of said first channel;
• a reception quality transmitting step for transmitting the reception quality of said first channel to said transmission apparatus;
• a power control information transmitting step for transmitting power control information for controlling the transmission power of said second channel to said transmission apparatus;
• an extracting step for extracting transmission control information that controls transmission of the reception quality of said first channel from the data of said second channel transmitted from said transmission apparatus;
• and
• a transmission controlling step for controlling the transmission of the reception quality of said first channel based on said transmission control information.

A program for making a computer perform a reception control process for a reception apparatus that uses a first channel through which a data is transmitted and a second channel on which power control is performed, and receives said data transmitted from a transmission apparatus for transmitting said data, said program characterized by comprising:

• a reception quality obtaining step for obtaining a reception quality of said first channel;
• a reception quality transmitting step for transmitting the reception quality of said first channel to said transmission apparatus;
• a power control information transmitting step for transmitting power control information for controlling the transmission power of said second channel to said transmission apparatus;
• an extracting step for extracting transmission control information for controlling transmission of the reception quality of said first channel from the data of said second channel transmitted from said transmission apparatus;
• and
• a transmission controlling step for controlling the transmission of the reception quality of said first channel based on said transmission control information.

A communications system, comprising:

• a transmission apparatus that uses a first channel through which data is transmitted and a second channel on which power control is performed, and transmits said data;
• and a reception apparatus for receiving said data transmitted from said transmission apparatus, said communications system characterized in that
• said transmission apparatus includes:
• transmission power controlling means for controlling the transmission power of said second channel in accordance with power control information for controlling the transmission power of said second channel;
• training means for carrying out training to obtain correlation information that correlates the reception quality of said first channel transmitted from said reception apparatus and the transmission power of said second channel;
• predicting means for obtaining a predicted value of the reception quality of said first channel using the transmission power of said second channel based on said correlation information;
• data transmission controlling means for controlling the transmission of said data through said first channel based on the predicted value of the reception quality of said first channel;
• and
• transmission control information transmitting means for transmitting to said reception apparatus through said second channel transmission control information that controls the transmission of the reception quality of said first channel by said reception apparatus;
• and
• said reception apparatus includes:
• reception quality obtaining means for obtaining the reception quality of said first channel;
• reception quality transmitting means for transmitting the reception quality of said first channel to said transmission apparatus;
• power control information transmitting means for transmitting said power control information to said transmission apparatus;
• extracting means for extracting said transmission control information from the data of said second channel transmitted from said transmission apparatus;
• and
• reception quality transmission controlling means for controlling the transmission of the reception quality of said first channel based on said transmission control information.