90 research outputs found

    Migrating Packet Dropping in Mobile Ad-hoc Network Based on Modified ACK-Based Scheme

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    Dynamic topology and infrastructure less behavior provide a great facility for adhoc network. Such facility generates easy connection of adhoc network and provides node mobility without loss of connection. In such ability packet dropping is a serious challenge for quality performance of adhoc network. The adhoc network suffered some serious security threats such attacks are black hole attack, malicious attack and worm hole attack that attack occurred a packet dropping problem in adhoc network. For the minimization of attack and packet dropping various authors built various method such method is node authentication, passive feedback scheme, ack-based scheme, reputation based scheme and incentive based scheme, ack-based scheme suffered a problem of massive overhead due to extra acknowledgment  packet and it also suffered decision ambiguity if the requested node refuse to send back Acknowledgment. In this dissertation we uses modified ack-based scheme using secure channel for overcoming the problem of decision ambiguity for requested node, improved node authentication and minimize packet dropping in adhoc network. Keywords mobile ad-hoc network, routing misbehaviour, AODV routing protocol, ACK based approach, network security

    “Reducing Packet Loss in MANET”

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    Dynamic topology and infrastructure less behaviour provide a great facility for adhoc network. Such facility generates easy connection of adhoc network and provides node mobility without loss of connection. In such ability packet dropping is a serious challenge for quality performance of adhoc network. The adhoc network suffered some serious security therats such attacks are black hole attack, malicious attack and worm hole attack that attack occurred a packet dropping problem in adhoc network. For the minimization of attack and packet dropping various authors built various method such method is node authentication, passive feedback scheme, ack-based scheme,reputation based scheme and incentive based scheme, ack-based scheme suffered a problem of massive overhead due to extra acknowledgment  packet and it also suffered decision ambiguity if the requested node refuse to send back Acknowledgment. In this dissertation we uses modified ack-based scheme using secure channel for overcoming the problem of decision ambiguity for requested node, improved node authentication and minimize packet dropping in adhoc network. Keywords- mobile ad-hoc network, routing misbehaviour, AODV routing protocol, ACK based approach, network security

    INTELLIGENT AIR CONDITIONING SYSTEM

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    This project had two key results. The first was developing a new method for detecting faults in the operation of the heating, cooling and economizer subsystems of rooftop air‐conditioning units. Improved fault detection will reduce energy consumption and increase energy efficiency, which will reduce greenhouse gases and other air emissions that contribute to air pollution. The method employed techniques from signal processing and time series analysis to evaluate the correlation among measuring parameters and to assess the presence or absence of faults in the system. This project had two key results. The first was developing a new method for detecting faults in the operation of the heating, cooling and economizer subsystems of rooftop air‐conditioning units. Improved fault detection will reduce energy consumption and increase energy efficiency, which will reduce greenhouse gases and other air emissions that contribute to air pollution. The method employed techniques from signal processing and time series analysis to evaluate the correlation among measuring parameters and to assess the presence or absence of faults in the system

    DESIGN OF AIR CONDITIONING SYSTEM USING GEO THERMAL TECHNOLOGY

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    My aim is to design heating ventilation and air conditioning (HVAC) system for a residential building, simultaneously control in temperature, humidity, cleanliness, proper distribution, noise level, comfort, energy efficient and cost effective. The project includes cooling and heating load calculations, fresh air, ventilation, exhaust design, duct design, pipe design, layout of accessories such as indoor and outdoor units and energy efficiency obtained on the project. With reference to the building plan and requirement of the case problem air conditioning load is estimated for seasonal conditions. The project is carried out on “Design of Geothermal Air Conditioning System for a Residential Building Load Calculation would be done using Hourly Analysis Program Software (HAP), while the duct sizing and pipe sizing would be done using McQuay duct and pipe sizer

    MAC –QOS MULTIMEDIA CONGESTIONS IN LOAD BALANCING BASED MESH NETWORKS

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    Wireless mesh network (WMNs) is becoming   familiarly mostly due to their deployment flexible. Major overhead of this network is to provide QoS to their servers. Lot of research work has been done to improve the efficiency of the QoS but it put extra overhead on WMNs resources. One among the major considerable characteristics is to enhance QoS in WMNs is end to end delay. In the proposed work focus is made to decreases the delay, thereby it is possible to enhance the throughput and also increasing QoS. As delay multimedia congestion needs to transmit in a fixed time otherwise quality of multimedia congestion degrades. Thus our work aims to degrade the delay to send the real time traffic like multimedia. A hybrid simulation cum emulation- test-bed is built and used for addressing ViLBaS performance compared with analyzed A-TXOP is developed over Re_AP to further enhance the performance of video congestion. Re_AP with A-TXOP helps in decreasing the delay of real-time congestion by over 32% and further enhances the quality of real-time congestion compared with Re_AP without A-TXOP. Finally, we have TXOP-accessible, whose goal is to reduce the delay of real time congestion. It includes using the TXOP to send to multiple receivers, for further analyzing the TXOP interval totally. This also decreases the multiple of contentions to the medium and hence decreases the delay of real-time congestion by over 14%. A-TXOP is developed over Re_AP to uphold improvement
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