An important class of virtual private networks (VPNs) builds secure tunnels at the transport layer leveraging TCP or UDP. Multipath TCP (MPTCP), an ongoing IETF effort that has been adopted into Linux and iOS, extends TCP to allow data to be delivered over multiple network interfaces and paths simultaneously. In this paper, using a testbed that can emulate a range of path characteristics betwee...

Within the heterogeneous Internet, a host needs to connect with different hosts which spread across the world. These hosts are also installed with different operating systems. Hence, TCP implementation of a host need run on different kinds of network paths and talk with different TCP versions. The classical TCP implementation, that uses a fixed set of TCP congestion control algorithms for all, ...

Transmission control protocol (TCP) Vegas detects network congestion in the early stage and successfully prevents periodic packet loss that usually occurs in TCP Reno. It has been demonstrated that TCP Vegas outperforms TCP Reno in many aspects. However, TCP Vegas suffers several problems that inhere in its congestion avoidance mechanism, these include issues of rerouting, persistent congestion...

Mobile communication platforms of ships, aircrafts, ground vehicles, or individual agents of both military and public services often operate in highly dynamic conditions with constantly changing infrastructure and access to communication resources. Efficient techniques for rapid and yet stable communication of such fleets with their control centres and between cooperating vehicles within the fl...

Host-based mobility and multi-homing protocols allow hosts to migrate ongoing transport sessions between networks or network interfaces. While such protocols can facilitate vertical mobility in a cost-efficient and accessagnostic manner, they are hard to secure when strong authentication between end points is not available. We present a balanced security solution which protects these protocols ...

A cross-layer based improved Transmission Control Protocol (TCP) protocol ensuring fair throughput and reliability was proposed in the previous investigations. In this protocol, data path was segmented, and representative nodes are maintained in every segment for any TCP connection. A Transmission Controller Module (TCM) is used by the representative node to determine bandwidth and delay in tra...

To achieve low TCP flow completion time (FCT) in data center networks (DCNs), it is critical and challenging to rapidly recover loss without adding extra congestion. Therefore, in this paper we propose a novel loss recovery approach FUSO that exploits multi-path diversity in DCN for transport loss recovery. In FUSO, when a multi-path transport sender suspects loss on one subflow, recovery packe...

In Multi-Radio Multi-Channel (MRMC) Wireless Mesh Networks (WMN), Partially Overlapped Channels (POC) has been used to increase the parallel transmission. But adjacent channel interference is very severe in MRMC environment; it decreases the network throughput very badly. In this paper, we propose a Coefficient of Restitution based Cross layer Interference aware Routing protocol (CoRCiaR) to im...

TCP traffic has been reported to have not only self-similarity but multi-fractal nature. Multi-fractal nature of traffic volume, in general, is well known to have significant influence to queueing behavior in short time scale. In the paper, we investigate about ”what component of TCP congestion control mechanism affects to multifractal nature of generated traffic?”. We artificially divide TCP c...

Many analytical and simulation-based studies of TCP performance in wireless environments assume an error-free and congestion-free reverse channel that has the same capacity as the forward channel. Such an assumption does not hold in many real-world scenarios, particularly in the hybrid networks consisting of various wireless LAN (WLAN) and cellular technologies. In this paper, we first study, t...