Authors: Ram Narayan Yadav; Kapil Sharma
Addresses: Department of Information and Communication Technology, Indian Institute of Technology, Jodhpur, 342011, Rajasthan, India ' Department of Information and Communication Technology, Indian Institute of Technology, Jodhpur, 342011, Rajasthan, India
Abstract: Nowadays, internet devices are becoming multi-homed. To utilise the multiple links, it is needed to use all the interfaces for transmission. Multipath TCP (MPTCP) is an effort that enables end points to distribute data over interfaces simultaneously. However, alternatively distributing data over links cannot utilise the network resources. Due to different characteristics of subflows, out-of-order data arrived at the receiver. This problem is more severe where the characteristics of each available link are different. This causes the receiver to send duplicate acknowledgement and this may induce the sender to infer data loss. This can degrade MPTCP performance because re-ordering is interpreted as sign of congestion. In this paper, we proposed an algorithm that predicts the data segment to be transmitted for a given subflow based on round-trip-time and present congestion state of the subflow. We implemented our proposed algorithm on ns-3 and noticed improvement over simple MPTCP.
Keywords: multipath TCP; MPTCP; wireless computer networks; concurrent multipath transfer; data distribution; segment re-ordering; segment scheduling; performance analysis.
International Journal of Communication Networks and Distributed Systems, 2017 Vol.19 No.3, pp.237 - 256
Accepted: 10 Aug 2016
Published online: 23 Aug 2017 *