| 摘要 |
PROBLEM TO BE SOLVED: To provide a data communication device capable of avoiding a sharp increase in the data transmission delay between end-to-end terminals, and relieving the tightness of buffer capacity. SOLUTION: A reception buffer 13a retains data received from a transmission terminal side. A TCP module 75 determines the amount of data Tbuf2 to be held between the data communication device and a reception terminal, based on a congestion window cwnd. And the TCP module 75 determines the amount of data that can be advertized to a transmission side, according to the amount of data that a transmission buffer 13b should hold. A PEP process 76 reads data from the reception buffer 13a until the reception buffer 13a becomes empty or the amount of data held by the transmission buffer 13b reaches Tbuf2, and stores the data into the transmission buffer 13b. The transmission buffer 13b temporarily holds the stored data. COPYRIGHT: (C)2006,JPO&NCIPI
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