Wireless sensor networks are very feasible to monitor where human reach is impossible. But conser... more Wireless sensor networks are very feasible to monitor where human reach is impossible. But conserving the limited resource and maintaining Quality of service is the challenging task. There is most need to design an algorithm to maintain quality of services. In this paper we have designed node layered division MAC with adaptive listening based on the queue size at the transmitting cluster node. The proposed protocol attenuates the problem of collision and unfair distribution of power among the nodes. When compared with the existing algorithms, IQMAC outperforms in terms of network lifetime, delay, PDR and collision probability.
International Journal of Advanced Research in Computer Science
wireless sensors are used in ample number of applications for sensing different data. They are us... more wireless sensors are used in ample number of applications for sensing different data. They are used in environmental monitoring or event based, but applications requiring both are not very familiar. These kinds of applications require data to be delivered based on the deadline. Such hybrid systems are considered and a method feasible for both is proposed in this paper. Sensors are grouped into clusters and group heads are selected based on some parameters which will help to save energy, balance the network as well as extend the lifetime. The sensors collect data and send to group heads using TDMA and data is collected by mobile sink time slots are allotted for time sensitive event data. The proposed technique is implemented in NS2 and compared with existing algorithms in terms of lifetime, delay etc. The proposed procedure has 15% more lifetime than previous methods
Agriculture is the backbone of the country as it feeds the human race. India’s top third crop cul... more Agriculture is the backbone of the country as it feeds the human race. India’s top third crop cultivation is the potato. The potatoes are propagated by vegetative methods where several pathogens tend to assemble over succeeding generations causing a reduction in the crop yield and quality of the crop. The yield of the potato production is most likely affected by the virus compared to the bacteria and fungus and there is a need to develop a model which diagnoses the disease at the initial stage. Long ago scientists had found the disease caused to the potato tuber, and leaf by the virus by laboratory methods Reverse transcription-polymerase chain reaction (RT-PCR), enzyme-linked immunosorbent assay (ELISA), etc., but it needs large infrastructure, labor management, and more time to diagnose the disease. This leads to intensive research in the field of virology. The potato-growing countries have suffered due to the disease-causing agents from the viruses which decreased the crop yield.Â
Congestion and the loss of energy is the most common problem in the Ad hoc network. A considerabl... more Congestion and the loss of energy is the most common problem in the Ad hoc network. A considerable amount of energy is consumed in wireless interfaces. On the other hand the actual available bandwidth varies due to change in contention affected by node mobility. Many of routing protocols use the shortest path route from source to destination with minimum hop count as optimal route selection. But minimum end to end delay may not always achieved through shortest path because of high collision rate and flows at the intermediate nodes. In this paper we propose an improvement of end to end delay using multipath routing which determines the best path selection out of the N-available shortest paths by considering congestion and energy constrains at each of the intermediate nodes. Contention window along with buffer size at MAC layer affects successfully transmission of packets. Performance results show that increase in the PDR, throughput and decrease of overhead and latency when compared ...
49 Abstract— Wireless sensor network is a network of sensor nodes. The sensor node distinctly has... more 49 Abstract— Wireless sensor network is a network of sensor nodes. The sensor node distinctly has 3 units, Sensi g Unit, Micro-Control Unit and Communication Unit. A sensor is deployed over a larger area such as an agricultural area to monitor the environmental parameters of the large area. As the, wireless sensor network operates on free frequency, security becomes a very challenging issue in such a network. Many of the wireless sensors are deployed to communicate and ex change sensitive data such as mining data, data regarding the geographical condition of the specific area and so n. Due to extremely limited processing capability of microprocessor units in sensors, limited energy, enforcing a secure prot col in such a network becomes extremely challenging. The past works have proposed different encryption techniques suitable for sensor networks. However, i t s found that to encrypt the packet at every node and decryp ting the data results in tremendous amount of energy loss. There...
VANETs is an emerging new technology which integrates the capabilities of new generation wireless... more VANETs is an emerging new technology which integrates the capabilities of new generation wireless networks to vehicles. Vehicle safety has always been a major concern for automotive engineers. Information about one vehicle can be forwarded to another vehicle using the IEEE 802.11p standard protocol, providing a driver or autonomous vehicle with information regarding speed and direction of the approaching vehicle. In this paper, The latest NS-2 distribution package version 2.34 supports simulation of IEEE 802.11p and provides significantly high level of VANETs simulation accuracy. This paper evaluates the performance of IEEE 802.11p Mac protocol by comparing performance of two routing protocols AODV and DSDV this is done by analyzing three performance metrics throughput, packet loss and average end to end delay.
Mobile ad-hoc network is a constantly changing wireless network of autonomous nodes which communi... more Mobile ad-hoc network is a constantly changing wireless network of autonomous nodes which communicate without the aid of any base station by routing the packets through intermediate nodes. As the nodes are mobile such topology changes consistently presenting great challenges in ensuring quality of service during routing and communication process. These issues are overcome by adapting multipath routing such that if one route fails then communication can continue through other routes. We propose a linear optimization based quality analysis of routes and split the load according to route quality. The optimization problem thus framed is by considering the network parameters such as PSNR of images and path cost solving by which the quality of the routes is enhanced. Simulation result shows that the proposed system performs better because of the use of primal dual Simplex optimization algorithm than the concept which does not use any optimization for load splitting. The algorithm performs...
Wireless sensor networks are very feasible to monitor where human reach is impossible. But conser... more Wireless sensor networks are very feasible to monitor where human reach is impossible. But conserving the limited resource and maintaining Quality of service is the challenging task. There is most need to design an algorithm to maintain quality of services. In this paper we have designed node layered division MAC with adaptive listening based on the queue size at the transmitting cluster node. The proposed protocol attenuates the problem of collision and unfair distribution of power among the nodes. When compared with the existing algorithms, IQMAC outperforms in terms of network lifetime, delay, PDR and collision probability.
International Journal of Advanced Research in Computer Science
wireless sensors are used in ample number of applications for sensing different data. They are us... more wireless sensors are used in ample number of applications for sensing different data. They are used in environmental monitoring or event based, but applications requiring both are not very familiar. These kinds of applications require data to be delivered based on the deadline. Such hybrid systems are considered and a method feasible for both is proposed in this paper. Sensors are grouped into clusters and group heads are selected based on some parameters which will help to save energy, balance the network as well as extend the lifetime. The sensors collect data and send to group heads using TDMA and data is collected by mobile sink time slots are allotted for time sensitive event data. The proposed technique is implemented in NS2 and compared with existing algorithms in terms of lifetime, delay etc. The proposed procedure has 15% more lifetime than previous methods
Agriculture is the backbone of the country as it feeds the human race. India’s top third crop cul... more Agriculture is the backbone of the country as it feeds the human race. India’s top third crop cultivation is the potato. The potatoes are propagated by vegetative methods where several pathogens tend to assemble over succeeding generations causing a reduction in the crop yield and quality of the crop. The yield of the potato production is most likely affected by the virus compared to the bacteria and fungus and there is a need to develop a model which diagnoses the disease at the initial stage. Long ago scientists had found the disease caused to the potato tuber, and leaf by the virus by laboratory methods Reverse transcription-polymerase chain reaction (RT-PCR), enzyme-linked immunosorbent assay (ELISA), etc., but it needs large infrastructure, labor management, and more time to diagnose the disease. This leads to intensive research in the field of virology. The potato-growing countries have suffered due to the disease-causing agents from the viruses which decreased the crop yield.Â
Congestion and the loss of energy is the most common problem in the Ad hoc network. A considerabl... more Congestion and the loss of energy is the most common problem in the Ad hoc network. A considerable amount of energy is consumed in wireless interfaces. On the other hand the actual available bandwidth varies due to change in contention affected by node mobility. Many of routing protocols use the shortest path route from source to destination with minimum hop count as optimal route selection. But minimum end to end delay may not always achieved through shortest path because of high collision rate and flows at the intermediate nodes. In this paper we propose an improvement of end to end delay using multipath routing which determines the best path selection out of the N-available shortest paths by considering congestion and energy constrains at each of the intermediate nodes. Contention window along with buffer size at MAC layer affects successfully transmission of packets. Performance results show that increase in the PDR, throughput and decrease of overhead and latency when compared ...
49 Abstract— Wireless sensor network is a network of sensor nodes. The sensor node distinctly has... more 49 Abstract— Wireless sensor network is a network of sensor nodes. The sensor node distinctly has 3 units, Sensi g Unit, Micro-Control Unit and Communication Unit. A sensor is deployed over a larger area such as an agricultural area to monitor the environmental parameters of the large area. As the, wireless sensor network operates on free frequency, security becomes a very challenging issue in such a network. Many of the wireless sensors are deployed to communicate and ex change sensitive data such as mining data, data regarding the geographical condition of the specific area and so n. Due to extremely limited processing capability of microprocessor units in sensors, limited energy, enforcing a secure prot col in such a network becomes extremely challenging. The past works have proposed different encryption techniques suitable for sensor networks. However, i t s found that to encrypt the packet at every node and decryp ting the data results in tremendous amount of energy loss. There...
VANETs is an emerging new technology which integrates the capabilities of new generation wireless... more VANETs is an emerging new technology which integrates the capabilities of new generation wireless networks to vehicles. Vehicle safety has always been a major concern for automotive engineers. Information about one vehicle can be forwarded to another vehicle using the IEEE 802.11p standard protocol, providing a driver or autonomous vehicle with information regarding speed and direction of the approaching vehicle. In this paper, The latest NS-2 distribution package version 2.34 supports simulation of IEEE 802.11p and provides significantly high level of VANETs simulation accuracy. This paper evaluates the performance of IEEE 802.11p Mac protocol by comparing performance of two routing protocols AODV and DSDV this is done by analyzing three performance metrics throughput, packet loss and average end to end delay.
Mobile ad-hoc network is a constantly changing wireless network of autonomous nodes which communi... more Mobile ad-hoc network is a constantly changing wireless network of autonomous nodes which communicate without the aid of any base station by routing the packets through intermediate nodes. As the nodes are mobile such topology changes consistently presenting great challenges in ensuring quality of service during routing and communication process. These issues are overcome by adapting multipath routing such that if one route fails then communication can continue through other routes. We propose a linear optimization based quality analysis of routes and split the load according to route quality. The optimization problem thus framed is by considering the network parameters such as PSNR of images and path cost solving by which the quality of the routes is enhanced. Simulation result shows that the proposed system performs better because of the use of primal dual Simplex optimization algorithm than the concept which does not use any optimization for load splitting. The algorithm performs...
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