Nowadays there is an increasing need for a general paradigm which can simplify network management and further enable network innovations. Software Defined Networking (SDN) is an efficient way to make the network programmable and reduce management complexity, however it is plagued with limitations inherited from the legacy Internet (TCP/IP) architecture. In this paper, in response to limitations...

Abstrucr-Mobile nodes of the future will be equiped with multiple network interfaces to take advantage of overlay networks, yet no current mobility systems provide full support for the simultaneous use of multiple interfaces. The need for such support arises when multiple connectivity options are available with different cost, coverage, latency and bandwidth characteristics, and applications wa...

We report on the fabrication of field-effect transistors based on single layers and bilayers of the semiconductor WS2 and the investigation of their electronic transport properties. We find that the doping level strongly depends on the device environment and that long in situ annealing drastically improves the contact transparency, allowing four-terminal measurements to be performed and the pri...

The majority of real-time multimedia traffic on the Internet is transported using the Transmission Control Protocol (TCP) or the User Datagram Protocol (UDP). Multimedia applications would benefit from a protocol that better supports their particular requirements, but transport layer ossification has limited the deployment of such protocols. This paper describes unordered time-lined TCP (uTLTCP...

The performance of transport layer protocols can be affected differently due to wireless congestion, as opposed to network congestion. Using an active network evaluation strategy in a real world test-bed experiment, the Transport Control Protocol (TCP), Datagram Congestion Control Protocol (DCCP), and Stream Control Transport Protocol (SCTP) were evaluated to determine their effectiveness in te...

In this paper we study the advantages and disadvantages of incorporating error correction schemes inside the TCP transport layer protocol. We show that under some circumstances, this scheme achieves better performance than that of retransmission schemes, and, in particular, the TCP-SACK scheme. We analyze the performance of both schemes and discuss the circumstances under which the error correc...

We evaluate several retransmission policies for transport protocols that support multihoming, such as SCTP. We find that schemes that attempt to improve the chance of success by retransmitting to an alternate peer IP address often degrade performance. Our results show that for better performance, new data transmissions and retransmissions should be sent to the same peer IP address. We also find...

Existing networks with transport protocols such as TCP and UDP have limitations when fitting into new technologies, like increased heterogeneity and mobility. In order to solve this problem, our attempt is to design a self-adaptive transport protocol, which can fit into the network condition dynamically according to the parameters given by upper layer and the network layer in (wired/wireless) N...

Typical transmission control protocol (TCP) based web agents in mobile wireless environment have several deficiencies, such as performance degradation, head-of-line blocking, and unsupported mobility. The Stream Control Transmission Protocol (SCTP) is a new transport protocol, which provides multi-streaming and multi-homing features. SCTP extensions for dynamic address reconfiguration will supp...

In this chapter, we discuss the transport layer design issues in a mobile wireless networks. The focus will be put on two transport protocols: Transmission Control Protocol (TCP) and Stream Control Transmission Protocol (SCTP). TCP is the dominant transport protocol currently used for most Internet services such as Web browsing, file transfer, remote login etc. SCTP is a recently developed prot...