Patent ID: 9537774
Date: 2017-01-03
CPC Classifications: H04L

Claim:
1. A transmission apparatus comprising: a frame transmitter configured to receive an asynchronous first frame transmitted via a first transmission network and arrange the received first frame to a second frame to transmit the arranged second frame to a second transmission network, wherein the frame transmitter is configured to detect insufficiency of a remaining transmission band of a path on the second transmission network corresponding to a path on which the first frame that is to be transmitted to an asynchronous transmission apparatus that transmits the first frame via the first transmission network is transmitted; a congestion detector configured to detect congestion that has occurred in the asynchronous transmission apparatus, which is different than the transmission apparatus, that receives the first frame via the first transmission network, the congestion detector including a pause-frame detection section that detects the occurrence of congestion in the asynchronous transmission apparatus based on a pause frame transmitted by the asynchronous transmission apparatus; and a band controller configured to determine, in accordance with a ratio of a cumulative period of a transmission interruption period specified by the pause frame to a predetermined measurement period, whether or not the transmission band of a path is to be reduced, the path being a path on the second transmission network corresponding to a path on which the congestion has occurred when the congestion has occurred in the asynchronous transmission apparatus, and configured to reduce the transmission band of the path, wherein the band controller is configured to control the transmission band of the path in which the insufficiency of the remaining transmission band has been detected so as to increase the transmission band of the path in which the insufficiency of the remaining transmission band has been detected.