| 摘要 |
PROBLEM TO BE SOLVED: To provide adaptive file delivery system and method.SOLUTION: The adaptive file delivery system and method transmit a data file, such as an audio-video file, over a network or a collection of networks in segments each transmitted during a different time period. Each time period has a transmission portion to transmit its associated file segment and a waiting portion in which no further interaction with the network occurs regarding the transmitted segment. In some implementations, the duration of the transmission portion of each time period is sufficient to reach a steady-state throughput condition, which allows the traffic load status of the one or more networks to be determined from rate measurements of file segment transmissions. The duration of the waiting portion of each time period is at least long enough to limit the average rate of file segment transmission to adapt to network traffic load variations while causing the entire file to be delivered in a predetermined delivery deadline. |
