Efficiency Analysis of the Forward Error Correction at the Transport Protocol Level

We propose a model of a virtual connection controlled by a transport protocol with a forward error correction mechanism in the selective and group repetition mode in the form of a discrete-time Markov chain. The influence of the protocol parameters such as window size and acknowledgement waiting timeout, the reliability of segment transmission in a transport connection (data transmission path), and the round trip delay as well as the parameters of the mechanism for recovering distorted segments (without retransmission) on the transport connection throughput is analyzed. In the feature space of protocol parameters, characteristics of the transmission path, and parameters of the mechanism of forward recovery of protocol data blocks, we establish domains of superiority of the control procedure of the transport protocol with forward error correction over the classical procedure with decision feedback based on the transport connection throughput criterion.