Multipath Congestion Control in Integrated Intelligent Network

In the integrated intelligent network, the high dynamics and high loss of satellite network leads to low bandwidth utilization. Furthermore, due to various necessary in satellite network, it is hard to meet the quality of service (QoS) requirement. In the present paper, we propose a novel congestion control algorithm (CCA) based on bottleneck bandwidth and round-trip time estimation for multipath TCP over the integrated intelligent network, which called AMPTCP-RB. In this work, we continuously estimated round-trip propagation time by calculating the link length and estimating bottleneck bandwidth by ack rate and send rate to evaluation congestion state, and then determined the decrease factor through utility function based on various QoS requirement. The result shows that proposed CCA enhances the total throughput performance and guaranteed the QoS.