Performance Of Transmission Control Protocol Tcp Congestion Control Over Wireless Links Using Modified Snoop Protocol
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Performance of Transmission Control Protocol (tcp) Congestion Control Over Wireless Links Using Modified Snoop Protocol
Because of the burgeoning increase for data communication and multimedia services over wireless links, and rapid growth of wireless communications, many researches have been undertaken to find effective integrated protocols that satisfy this demands. Since wireless links normally show higher bit error rate and temporal disconnections compared with wired links, the losses are greater, this may also be caused by the mobility like handoff, and many wireless channel impairment errors and not just congestion. TCP deals with packet losses by applying congestion control mechanisms, which tends to degrade its performance. Many protocols have been proposed including Snoop, to alleviate this problem. Our objectives here are to study and enhance the Snoop protocol using the modified ACK called Fake Acknowledgment under various network parameters. In this thesis, a Fake ACK technique proposed based on the Snoop Acknowledgment procedure; this reduces the waiting time of the Fixed Host waiting for the right Acknowledgment to be received, and hence reducing the probability of initiating congestion control mechanism. The results show that the throughput of our technique is increased and the losses are decreased compared to traditional Snoop protocol, under different parameter values.
Computational Science and Its Applications -- ICCSA 2004
The natural mission of Computational Science is to tackle all sorts of human problems and to work out intelligent automata aimed at alleviating the b- den of working out suitable tools for solving complex problems. For this reason ComputationalScience,thoughoriginatingfromtheneedtosolvethemostch- lenging problems in science and engineering (computational science is the key player in the ?ght to gain fundamental advances in astronomy, biology, che- stry, environmental science, physics and several other scienti?c and engineering disciplines) is increasingly turning its attention to all ?elds of human activity. In all activities, in fact, intensive computation, information handling, kn- ledge synthesis, the use of ad-hoc devices, etc. increasingly need to be exploited and coordinated regardless of the location of both the users and the (various and heterogeneous) computing platforms. As a result the key to understanding the explosive growth of this discipline lies in two adjectives that more and more appropriately refer to Computational Science and its applications: interoperable and ubiquitous. Numerous examples of ubiquitous and interoperable tools and applicationsaregiveninthepresentfourLNCSvolumescontainingthecontri- tions delivered at the 2004 International Conference on Computational Science and its Applications (ICCSA 2004) held in Assisi, Italy, May 14–17, 2004.
High-Speed Networks and Multimedia Communications
The refereed proceedings of the 6th IEEE International Conference on High Speed Networking and Multimedia Communication, HSNMC 2003, held in Estoril, Portugal in July 2003. The 57 revised full papers presented were carefully reviewed and selected from 105 submissions. The papers are organized in topical sections on integrated differentiated services, multicasting, peer-to-peer networking, quality of service, QoS, network and information management, WDM networks, mobile and wireless networks, video, CDMA, real time issues and protocols for IP networks, multimedia streaming, TCP performance, voice over IP, and traffic models.