Abstract An increase in the popularity and usage of Multimode’s devices for ubiquitous network access creates thrust for utilization of simultaneous network connections. Unfortunately, the standard transport layer protocols used single homed congestion control mechanism for multipath transmission. One major challenge in such multipath transmission is related to the Receiver Buffer (RBuf) blocking that hinders higher aggregation ratio of multiple paths. This study proposed Simultaneous Multipath Transmission (SMT) scheme to avoid the RBuf blocking problem. Realistic simulation scenarios were designed such as intermediate nodes, cross traffic, scalability or mix of them to thoroughly analyses SMT performance. The results revealed that SMT has overcome RBuf blocking with improvement in aggregate throughput up to 95.3 % of the total bandwidth.

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[35] Yang F., Amer P., and Ekiz N., A Scheduler for Multipath TCP, in Proceeding of IEEE 22nd International Conference on Computer Communications and Networks, Nassau, pp. 1-7, 2013. Muhammad Abdul Qadir is a professor in Faculty of Computing at Capital University of Science and Technology, Islamabad, Pakistan. He is the head of the Center for Distributed and Semantic Computing. He earned his MSc from Qauid-e-Azam University, Islamabad, Pakistan and PhD from University of Surrey, Guildford, UK. He is an active researcher in the areas of Computer Networks, World Wide Web, Semantic Web, Ontology Engineering, Bioinformatics, andAlgorithms. He has published more than 100 research papers in reputed conferences and journals. A number of PhD and MS students are doing research under his supervision. Dr. M.A. Qadir is a member of IEEE and also a committee member for a number of conferences. Samiullah khan is currently a PhD student at Capital University of Science and Technology, Islamabad- Pakistan. He obtained his M S (Information Technology) s degree with distinction from the Institute of business management sciences, University of Agriculture, Peshawar-Pakistan in 2008. His research is centered on bandwidth aggregation at network and transport layer, routing protocols and simulation tools. He acts as a research assistant in ICT R and D funded project named Dynamic Bandwidth Aggregation in Heterogeneous Wireless Networks for Mission Critical Applications .