Patent ID: 9674095
Date: 2017-06-06
CPC Classifications: H04L

Claim:
1. A communication node disposed on a packet transfer path through which packets flow between an end of a transmitting side and an end of a receiving side according to a specific protocol under which flow control and congestion control using a window size are performed, the communication node comprising: a communication interface configured to perform processing for receiving a packet from a link on the packet transfer path and processing for transmitting a packet to the link; a storage device configured to store a queue used to temporarily accumulate a packet in accordance with the specific protocol, wherein the packet is received from the link or transmitted to the link; and a controller configured to adjust retention time that is a period of time for retaining a packet accumulated in the queue based on a current bandwidth in a receiving direction of the link, wherein the controller is configured to use a criterion that the retention time becomes zero when a bandwidth in the receiving direction is maximum, and to increase the retention time in response to increase of an amount of the bandwidth in the receiving direction that lowers from a given value, and wherein the accumulated packet is retained in the queue until expiration of the retention time.