Tomorrow’s large physics and astronomy projects will require to transport tremendous amounts of data over long distances in near real time. Traditional TCP implementations have severe problems in reaching the necessary performance. In the recent past, researchers have shown that TCP implementations can be scaled to achieve multi-gigabit per second speeds over high-bandwidth high-delay networks....

TCP Vegas is regarded as balanced congestion control strategy, however, shortcomings such as low bandwidth utilization and not gain fairness when sharing link with TCP Reno. We reinvestigate these issues and propose a modification strategy called Dynamic Vegas, which changes initial TCP Vegas’ in slow start and congestion avoidance phase. It dynamically chooses slow start algorithm and adjust d...

Many studies have shown that the transmission control protocol (TCP) which is the major transport protocol in the Internet today is finding it increasingly difficult to cope with the growth of communication network capacities and applications. TCP’s inability to properly utilize network links is one of the problems. Besides, TCP takes a long time to achieve fairness between flows. Many of the n...

Today’s wireless networks usually use a single-path routing protocol, derived from wired networks. Opportunistic routing makes use of the multicast nature of wireless networks. The goal of this thesis is to implement and evaluate an opportunistic routing protocol for wireless mesh networks. Since TCP is greatly important for a major fraction of the expected traffic, this work will also consider...

This document specifies an optional Quick-Start mechanism for transport protocols, in cooperation with routers, to determine an allowed sending rate at the start and, at times, in the middle of a data transfer (e.g., after an idle period). While Quick-Start is designed to be used by a range of transport protocols, in this document we only specify its use with TCP. Quick-Start is designed to all...

We present a new end-to-end transport protocol called Multipath Transmission Control Protocol (M/TCP) and its robust acknowledgement (ACK) schemes. M/TCP is designed as an alternative TCP option to improve reliability and performance of today’s Internet. M/TCP allows a sender to simultaneously transmit data via multiple controlled paths to the same destination. The protocol requires no modifica...

Due to the rapid evolution of networking and electronic capabilities, the use of wireless devices is becoming ubiquitous. Most of the wireless networks have fixed infrastructure and requires higher data rates. Due to high data rate in wireless networks the Transmission Control Protocol (TCP) performance has a broad and significant impact on data applications, and is essential towards massive de...

Subband-coded images can be transmitted in the Internet using either the TCP or the UDP protocol. Delivery by TCP gives superior decoding quality but with very long delays when the network is unreliable, whereas delivery by UDP has negligible delays but with degraded quality when packets are lost. Although images are delivered currently over the Internet by TCP, we study in this paper the use o...

Now-a-days TCP is a famous protocol used in Internet but the main problem is packet losses due to congestion. In this thesis we proposed a new Loss Tolerant TCP (LT-TCP), an enhancement of TCP which makes it robust and applicable for extreme wireless environment. In the proposed LT-TCP two additional term, data and data header compression are added in existing LT-TCP. We reduce the total volume...