“…This heterogeneity results in packet reordering, which leads to Head-of-Line (HoL) blocking, and subsequently increases out-of-order (OFO) buffer at the receiver side and ultimately reduces the Goodput. Various enhanced scheduling schemes, like BLEST (Blocking Estimation-based MPTCP Scheduler) (Ferlin et al, 2016b), CP scheduling (Constraint-based proactive scheduling) (Oh and Lee, 2015), DAPS (Delay-Aware Packet Scheduler) (Kuhn et al, 2014;Sarwar et al, 2013), OTIAS (Out-of-order Transmission for Inorder Arrival Scheduler) (Yang et al, 2014), HSR (Highest Sending Rate), LWS (Largest Window Space) and LTS (Lowest Time/Space) (Kimura et al, 2017) have been proposed to fully utilize all paths.…”