scholarly journals Integrating Wireless Sensor Networks with Cloudcomputing

wireless sensor network (WSN) is an unmistakable innovation for a long while. In most genuine applications, the immense measure of information assembled utilizing sensors are required to be put away and be made accessible for whenever, anyplace get to. However, WSNs are made out of asset obliged gadgets which absence of abilities to store gigantic lump of information and perform ensuing preparing of the information. WSNs can be increased by cloud condition which offers such administrations. Thus, a Sensor-Cloud structure is imagined in this proposition coordinating remote sensor connect with cloud condition. The coordinated system is appropriate for versatile and unavoidable figuring applications empowering Internet of Things (IoT) and planned to be utilized in genuine applications. Creating countries need proportionate social insurance conveyance answers for serve gigantic populace. This proposition features the issues identified with medicinal services conveyance that might be tended to utilizing the incorporated system. It might be utilized for empowering individuals, networks, medicinal services associations to gather and transmit wellbeing data as and when required so as to improve social insurance administrations for the provincial and urban populace. Inside the IoT empowered structure, few difficulties are recognized for examination. This theory stresses on difficulties including remote sensors and gives specialized answers for these difficulties. WSNs ordinarily work on IEEE 802.15.4 standard utilizing exclusive conventions which includes structure and the board unpredictability when combined with Internet. This postulation furnishes answer for coordinate sensor worldview with cloud condition which depends on

Wireless sensor network (WSN) Is an obvious improvement for pretty some time. In most actual applications, the giant percentage of information collected the use of sensors are required to be taken care of and be made available for at some thing detail, anyplace get to. Despite the fact that, WSNs are produced from gain obliged devices which nonattendance of capacities to keep large piece of records and carry out resulting getting prepared of the information. WSNs can be advanced with the resource of cloud scenario which gives such agencies. In this way, a Sensor-Cloud shape is expected in this advice planning far flung sensor interface with cloud circumstance. The organized framework is appropriate for adaptable and unavoidable figuring packages attractive net of things (IoT) and intended for use in certifiable programs. Making worldwide places want proportionate social protection motion solutions for serve massive hundreds. This advice includes the problems related to restorative administrations movement that can be tended to using the consolidated framework. It can be used for appealing humans, systems, recuperation administrations courting to build up and transmit prosperity statistics as and at the same time as required if you want to enhance social protection organizations for the not unusual and concrete masses. Within the IoT engaged shape, barely any stressful conditions are perceived for assessment. This speculation weights on issues together with a ways flung sensors and gives unique responses for the ones worrying conditions. WSNs generally chip away at IEEE 802.15.4 elegant the use of selective suggests which incorporates shape and the board capriciousness even as joined with internet. This proposition clothes answer for prepare sensor thoughts-set with cloud situation which is predicated upon internet. Execution of 6LoWPAN based totally totally completely center factors allows ordinary correspondence over the frameworks collectively with internet.


2013 ◽  
Vol 278-280 ◽  
pp. 689-692 ◽  
Author(s):  
Jin Jin Xu ◽  
Sheng Jun Su ◽  
Ming Hui Yuan

A SSNS (simple sensor network sniffer) is used to analyze and evaluate the Wireless Sensor Networks (WSN) effectively. SSNS is designed to monitor IEEE 802.15.4 protocol frame, which based on the Ethernet. Unlike the existed monitoring system, our design is much simpler and needs less resource. It is analyzed in this paper that the monitor network framework, time synchronization, and analysis program design. The results show that SSNS works stably, and can real-time display the frame monitored and reflect the dynamic change of WSN.


Author(s):  
Carlos Lino ◽  
Carlos Tavares Calafate ◽  
Pietro Manzoni ◽  
Juan-Carlos Cano ◽  
Arnoldo Díaz

The performance of wireless sensor networks (WSNs) at monitoring time-critical events is an important research topic, mainly due to the need to ensure that the actions to be taken upon these events are timely. To determine the effectiveness of the IEEE 802.15.4 standard at monitoring time-critical events in WSNs, we introduce a routing scheme based on drain announcements that seeks minimum routing overhead. We carried out a novel performance evaluation of the IEEE 802.15.4 technology under different conditions, to determine whether or not near-real-time event monitoring is feasible. By analyzing different simulation metrics such as packet loss rate, average end-to-end delay, and routing overhead, we determine the degree of effectiveness of the IEEE 802.15.4 standard at supporting time-critical tasks in multi-hop WSNs, evidencing its limitations upon the size and the amount of traffic flowing through the network.


Sensors ◽  
2020 ◽  
Vol 20 (7) ◽  
pp. 1971 ◽  
Author(s):  
Sangrez Khan ◽  
Ahmad Naseem Alvi ◽  
Muhammad Awais Javed ◽  
Byeong-hee Roh ◽  
Jehad Ali

Internet of Things (IoT) is a promising technology that uses wireless sensor networks to enable data collection, monitoring, and transmission from the physical devices to the Internet. Due to its potential large scale usage, efficient routing and Medium Access Control (MAC) techniques are vital to meet various application requirements. Most of the IoT applications need low data rate and low powered wireless transmissions and IEEE 802.15.4 standard is mostly used in this regard which offers superframe structure at the MAC layer. However, for IoT applications where nodes have adaptive data traffic, the standard has some limitations such as bandwidth wastage and latency. In this paper, a new superframe structure is proposed that is backward compatible with the existing parameters of the standard. The proposed superframe overcomes limitations of the standard by fine-tuning its superframe structure and squeezing the size of its contention-free slots. Thus, the proposed superframe adjusts its duty cycle according to the traffic requirements and accommodates more nodes in a superframe structure. The analytical results show that our proposed superframe structure has almost 50% less delay, accommodate more nodes and has better link utilization in a superframe as compared to the IEEE 802.15.4 standard.


2013 ◽  
Vol 9 (2) ◽  
pp. 117 ◽  
Author(s):  
Luca Catarinucci ◽  
Sergio Guglielmi ◽  
Luca Mainetti ◽  
Vincenzo Mighali ◽  
Luigi Patrono ◽  
...  

Wireless Sensor Networks (WSNs) are receiving an ever increasing attention because they are one of the most important technologies enabling the Internet of Things vision. Since nodes of these networks are battery-powered, energy efficiency represents one of the main design objectives. This goal can be primarily achieved through an optimization of the communication phase, which is the most power consuming operation for a WSN node. However, the limited computational and storage resources of physical devices make the design of complex communication protocols particularly hard, suggesting, on the contrary, to integrate more simple communication protocols with hardware solutions aimed at energy saving. In this work, a new MAC protocol, compatible with the IEEE 802.15.4 standard, and a reconfigurable beam-steering antenna are presented and validated. They significantly reduce the nodes’ power consumption by exploiting scheduling techniques and directional communications. Specifically, both during transmission and receiving phases, the node activates exclusively the antenna sector needed to communicate with the intended neighbour. The designed antenna and the proposed protocol have been thoroughly evaluated by means of simulations and test-beds, which have highlighted their good performance. In particular, the MAC protocol has been implemented on the Contiki Operating System and it was compared with the IEEE 802.15.4 standard solution.


2020 ◽  
Vol 16 (10) ◽  
pp. 155014772095167
Author(s):  
Walter Tiberti ◽  
Federica Caruso ◽  
Luigi Pomante ◽  
Marco Pugliese ◽  
Marco Santic ◽  
...  

Among the classes of wireless personal area networks, a wireless sensor network typically refers to a versatile and densely distributed sensing platform that enables the support of a wide variety of application domains. Among the various technical challenges addressed by more than one decade of research in wireless sensor networks, security across wireless links is by far one of the most critical ones and relates to the need of guaranteeing reliability and trustiness of the collected data. This article deals with the cryptographic aspects involved in securing wireless sensor networks, in terms of confidentiality and authentication. In particular, moving from some results previously achieved in our research activity, this article extends a cryptography scheme in order to better comply with the security requirements that arise from real-world wireless sensor network installations. The proposed scheme, called topology-authenticated key scheme 2, takes advantage of hybrid cryptography to provide security in the presence of resource-constrained sensor nodes using topology-authenticated keys to provide increased robustness to the scheme itself. The proposed extensions provide full practical support to star-topology wireless sensor networks and the article presents also some experimental results obtained by implementing the scheme on two different wireless sensor network platforms available for protocol stacks compliant with the IEEE 802.15.4 standard.


Vitality effectiveness is the most testing theme in Wireless Sensor Networks (WSN). As a result of the expanding requests of different applications, and the requirements of vitality, memory and computational intensity of the WSN hubs, numerous thinks about have concentrated on these territories as of late. Specialists have proposed an assortment of conventions, for example, LEACH, PEGASIS and so forth. In this Manuscript, we will talk about how vitality proficiency is influenced by scaling, for example distinctive system sizes, and by various steering calculations. With the expanding utilizations of substantial scale WSNs, for example, savvy framework and ecological observing. This manuscript proposes another steering calculation to enhance the vitality proficiency by decreasing the number and absolute transmissions remove so as to spare vitality. Reproductions propose that the proposed calculation will be more vitality proficient in medium to vast scale remote sensor systems. Kinds of sensors which are utilized to send and get information through the remote system. Since sensors might be conveyed haphazardly, WSNs don't have a fixed framework and there is no very much characterized brought together sorting out system.


Vitality effectiveness is the most testing theme in Wireless Sensor Networks (WSN). As a result of the expanding requests of different applications, and the requirements of vitality, memory and computational intensity of the WSN hubs, numerous thinks about have concentrated on these territories as of late. Specialists have proposed an assortment of conventions, for example, LEACH, PEGASIS and so forth. In this Manuscript, we will talk about how vitality proficiency is influenced by scaling, for example distinctive system sizes, and by various steering calculations. With the expanding utilizations of substantial scale WSNs, for example, savvy framework and ecological observing. This manuscript proposes another steering calculation to enhance the vitality proficiency by decreasing the number and absolute transmissions remove so as to spare vitality. Reproductions propose that the proposed calculation will be more vitality proficient in medium to vast scale remote sensor systems. Kinds of sensors which are utilized to send and get information through the remote system. Since sensors might be conveyed haphazardly, WSNs don't have a fixed framework and there is no very much characterized brought together sorting out system.


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