| 摘要 |
A method and device for transmission of data units over a communication network, particularly over a network where data units are transmitted with constant bit rate. Bandwidth reservation is optimized in the communication network for more than one file transfer within a greater time period between two dedicated end systems, running automatically without needing user interaction. The bandwidth is controlled by characterizing a given transmission path with an optimal bandwidth learned from characterization results. Based on observations of a data path during transmission phase, for instance by a packet trace, the bandwidth used and level of utilization are determined and an optimal bandwidth is stored in memory and used for a next file transfer to the same end system. The advantage of the optimization procedure is high throughput, i.e., short delay, by keeping a high bandwidth utilization with regard to low overallocation. The user does not have to estimate a vague value for the bandwidth reservation. Additionally, the system is adaptive so that a new optimal bandwidth occurs after a reconfiguration.
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