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Congestion control mechanism is solely responsible for maintaining the performance of streaming data. However, when there is no congestion, a regular delivery window update is followed as a step by step process. The process can be improved by individual window update along with acknowledgement (ACK) as feedback to the server even in the absence of congestion. To achieve maximum throughput and minimum delay, we have suggested modification in the existing handshaking mechanism of quick UDP internet connections (QUIC) protocol. This paper presents an investigation of QUIC protocol performance and proposes a modified QUIC (ModQUIC): a modification in existing handshaking mechanism of QUIC to reduce control overhead. Chromium server-client model testbed setup results, show that the proposed technique gives stable output and improves performance in terms of overall throughput and delay over QUIC and transmission control protocol (TCP). Performance has been tested for limited (2 Mbps) and sufficient (10 Mbps) link bandwidth in presence of loss. The validation of results has been carried out with the help of linear regression model. The result show a throughput improvement of 35.66% and 51.93% over QUIC and TCP respectively and also the delay is reduced by 3% to 5% over QUIC and TCP.

Intrusion Detection System, as the name suggests is such an arrangement whereby any unauthorised access to private premises can be monitored closely. This paper suggests the development of a system which ameliorates the traditional way of fencing to avoid in filtration. The system comprises of Infra Red (IR) transceiver for continuous surveillance of the enclosure. An intrusion subsequently disturbs the IR beams and generates a signal which triggers the camera and associated entities like hooter and spotlight. The camera captures still sand records a video as soon as the intrusion occurs. These images and video along with the location of the intrusion are sent to the central control station through the dual-radio board for the authorities to take actions efficiently. Area of application mainly include large storage premises or agricultural land where safety of the goods is a major concern and this system can be deployed as the primary hurdle for intruders besides the traditional way of fencing with bar bed wires.  Index Terms-intrusion detection, infra-red, transreceiver, central control unit JayashreeKharat,

In the networks, a transport layer is responsible for reliable data with guaranteed Quality of Service. A Modified-QUIC protocol provides improved throughput and reduced latency of the network. This work proposes a modification in handshaking mechanism for QUIC protocol to minimize overhead due to control signals and time required to update the congestion-window size. This modification fine-tunes the window update mechanism with the acknowledgment frame, which results in a smooth variation in the congestion-window size. This leads to the control congestion by regulating traffic in the network. In the proposed mechanism, unnecessary time out events are avoided by updating the congestionwindow on receipt of the acknowledgment frame. This work has been carried out using two different testbed setups to verify the transport layer and a browser network performance. It has been observed that a Modified-QUIC protocol is easy to deploy, improves the throughput and data rate by 35% and 3.43%, respectively, over the QUIC protocol. The average fairness index is increased with a file size and for the long live traffic.How to cite this article: Kharat P, Kulkarni M. Modified QUIC protocol with congestion control for improved network performance.