Patent ID: 7369497
Filing Date: 2008-05-06
Classification: H04L,H04W

Abstract:
1. A data communication speed control system for controlling data communication speed, said system comprises: a receiving apparatus for sequentially detecting momentary real transmission speed in a communication channel, based on received data that has been delivered from a transmitting apparatus, the receiving apparatus sequentially transmits the real transmission speed to said transmitting apparatus; and said transmitting apparatus selects the species of the data and sets an initial transmission speed for the data based on the communication channel, the transmitting apparatus then sequentially adjusts the transmission speed of said data that is to be sent to said receiving apparatus, based on said real transmission speed, and controls said data communication speed between the transmitting apparatus and said receiving apparatus, wherein said real transmission speed over the communication channel is predicted based on the result of a calculated packet loss rate supplied from said receiving apparatus, and wherein said packet loss rate is calculated by counting the number of packet errors within received streaming data, and wherein said transmitting apparatus calculates predicted transmission speed on the basis of mean value of said real transmission speed in definite time that has been sequentially notified from said receiving apparatus, and controls the compression rate relevant to said data on the basis of transmission speed.