Patent 7933997 was granted and assigned to Sony on April, 2011 by the United States Patent and Trademark Office.
There is provided a communication apparatus including: a transmission unit which transmits data to an opposite communication apparatus; a physical band measurement unit which measures a physical band against the opposite communication apparatus; and a rate control unit which controls a transmission rate of the transmission unit within a range of the physical band when a previous transmission rate of the transmission unit is below a value of subtracting a predetermined value from the physical band and within a range of exceeding the physical band when the previous transmission rate is beyond the value of subtracting the predetermined value from the physical band.