Modeling and Analysis for Steady-State Throughput of CMT Based on Bounded Receive Buffer
Jie Liu · Chinese Journal of Computers · 2015
Concurrent Multipath Transfer(CMT)is a new transport protocol which uses the Stream Control Transmission Protocol's(SCTP)multihoming feature to distribute data across multiple end-to-end paths concurrently in SCTP's association,CMT have some advantage of aggregate bandwidth and improve the end-to-end throughput.According to the send window is whether or not affected by the receive window in the presence of bounded receive buffer,we propose a CMT's throughput model based on the correlation between send window and receive window in this paper.Firstly,we analyze the congestion window such as timeout stage,slow start stage and congestion avoidance stage in above two cases(namely,the send window is whether or not influenced by the receive window).Secondly,we propose a math expression of steady-state throughput about RTT,RTO and packet loss rates in CMT,which is able to accurately predict steady-state throughput of CMT in the presence of bounded receive buffer.Finally,simulation results show the effectiveness and accuracy of CMT's throughput model.