| 摘要 |
A communication apparatus for implementing a communication session based upon a congestion window specifying a signal amount that can be sent out continuously to a network employs a signal propagation time in the communication session, thereby to estimate a congestion degree of a bottleneck circuit, and decides an increased-width of the congestion window in a congestion avoidance action based upon the estimated circuit congestion degree. As the increased-width, the smaller value is decided as the estimated circuit congestion degree increases. When the communication apparatus enlarges the congestion window, it employs the decided increased-width, thereby to calculate size of the congestion window that should be applied.
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