An Experimental Study of Concurrent Multipath Transmission Protocol in Lossy and Asymmetric Network Environment

With the rapid advancement in communication technology such as the Internet of Things and machine-to-machine communications, not only humans but a large number of self-adaptive devices are also pouring data into the network. Most of these devices are resource constraint and communicate wirelessly in a lossy, heterogeneous and asymmetric network environment. Recently many multi-home devices are coming with multiple asymmetric network interfaces, so maximum exploitation of these interfaces using concurrent multipath transmission (CMT) protocols is imperative. This paper presents state-of-art of technological details of different variants of CMT protocols as well as an experimental evaluation of basic CMT, CMT-potentially failed (CMT-PF) and Adaptive CMT (A-CMT) in the lossy and asymmetric network environment. The experimental evaluation is performed using NS2.35 simulation tools on widely used network topology under varying network factors like bandwidth, network congestion and round-trip time (RTT). Although these variants are not designed with heavy losses in mind, the simulation results show that the performance of A-CMT is better than CMT and CMT-PF.