scholarly journals Topology influence on the radio communication range of sensor networks

Author(s):  
F. Tsvetanov ◽  
I. Georgieva ◽  
M. Pandurski

The Internet of Things (IoT) applications use wireless technologies in order to establish Internet connection. Communication technologies such as Wi-Fi, cellular, ZigBee, Bluetooth, etc. are used to transfer data in IoT. The choice of the appropriate technology or combination of technologies depends on the type of application, its characteristics, user requirements, and other factors such as communication range, security requirements, battery life, etc. In our project, we will focus on Star, Cluster and Mesh wireless topologies, conduct comparative analysis between them, and testing different XBee devices with specialized software. The experiments are connected to the quality of the transferred data using different XBee devices and how this will affect the transmission range. The results of our research show that in terms of the range and quality of packet transmission, the cluster topology shows the best results.

Sensors ◽  
2018 ◽  
Vol 18 (11) ◽  
pp. 4053 ◽  
Author(s):  
Andrea Petroni ◽  
Francesca Cuomo ◽  
Leonisio Schepis ◽  
Mauro Biagi ◽  
Marco Listanti ◽  
...  

The Internet of Things (IoT) is by now very close to be realized, leading the world towards a new technological era where people’s lives and habits will be definitively revolutionized. Furthermore, the incoming 5G technology promises significant enhancements concerning the Quality of Service (QoS) in mobile communications. Having billions of devices simultaneously connected has opened new challenges about network management and data exchange rules that need to be tailored to the characteristics of the considered scenario. A large part of the IoT market is pointing to Low-Power Wide-Area Networks (LPWANs) representing the infrastructure for several applications having energy saving as a mandatory goal besides other aspects of QoS. In this context, we propose a low-power IoT-oriented file synchronization protocol that, by dynamically optimizing the amount of data to be transferred, limits the device level of interaction within the network, therefore extending the battery life. This protocol can be adopted with different Layer 2 technologies and provides energy savings at the IoT device level that can be exploited by different applications.


Author(s):  
Jayashree K ◽  
Babu R ◽  
Chithambaramani R

The Internet of Things (IoT) architecture has gained an increased amount of attention from academia as well as the industry sector as a significant methodology for the development of innovative applications and systems. Currently, the merging of this architecture with that of Cloud computing has been largely motivated by the need for various applications and infrastructures in IoT. In addition to this, the Cloud ascends as an eminent solution that would help solve various challenges that are faced by the IoT standard when varied physical devices. There are an excessive number of Cloud service providers the web along with many other services. Thus, it becomes critical to choose the provider who can be efficient, consistent, and suitable, and who can deliver the best Quality of Service (QoS). Thus, this chapter discusses QoS for cloud computing and IoT.


2021 ◽  
Vol 9 (19) ◽  
pp. 47-57
Author(s):  
María Martínez ◽  
Marta Mesías

The food chain is made up of the different stages that the product follows from its origin to its final destination: production, transformation, storage, distribution and consumption. Throughout the chain, the traceability of the food is key to alert of any potential danger, establishing comprehensive food safety, from the beginning to the end, “from farm to fork". The transformation that is taking place in society thanks to the most avant-garde information and communication technologies (ICTs), is also breaking into the food chain, constituting the food industry 4.0, which is available at the service of each link through intelligent systems that allow obtaining safer, higher quality products in less time. Each ICT will offer different development possibilities thanks to its particular characteristics, so that in each link the most appropriate technology will be selected to solve the specific problems posed. This work aims to carry out a review of all these avant-garde tools, describing how thanks to these disruptive technologies, the processes of the food chain are being transformed, increasing, at the same time, the safety and quality of the products obtained and evaluating the possible associated social repercussions.


2021 ◽  
Author(s):  
Alexander Valach ◽  
Dominik Macko

<div>Number of embedded devices connected to the Internet is rapidly increasing, especially in the era of the Internet of Things (IoT). The growing number of IoT devices communicating wirelessly causes a communication-parameters selection problem, implying the increasing number of communication collisions. Multiple factors of IoT networks signify this problem, such as inability to communication-channel listening prior to the transmission (due to longer distances), energy constrains (due to inability of powering devices from the grid), or limitation of duty cycle and high interference (due to usage of unlicensed band in communication technologies). This article is focused on alleviating this problem in LoRa networks, which is one of the most promising technology for long-range and low-power</div><div>communication. We utilize the existing LoRa@FIIT protocol to achieve energy-efficient communication. The scalability of the LoRa network is increased by modifying the communication-parameters selection algorithm. By ensuring of quality of service mechanism at each node in the infrastructure, the application domain of the proposed architecture is widened. The simulation-based experimental results showed a significantly reduced number of collisions for mobile nodes, which reduces the channel congestion and the wasted energy by retransmissions.</div>


Author(s):  
Eisha Akanksha

The internet of things (IoT) brings ‘life' to non-living things. In the IoT frameworks, the devices become smarter, more intelligent, become able to make decisions, and can communicate with other entities, applications, as well as human beings. According to a Gartner report, by 2020 more than 25 billion devices will be connected to the internet. Low power wireless wide area network (LPWAN) is a group of various low power, wide-area technologies such as LoRa, Sigfox, NB-IoT, DASH7, RPMA, LTE-M, designed to interconnect low bandwidth, battery-operated devices having limited processing power, limited memory, transmission speed with low bit rates at long-range using radio communication technologies. Most of these technologies provide a long battery life, low deployment cost, large capacity, and generates deeper insights of businesses. However, each technology differs in latency, data rate, handover mechanisms, quality of services, applications, and use cases. In this chapter, the authors provide the basic principles of these LPWANs and present their applications in different domains.


2021 ◽  
Vol 1 (1) ◽  
pp. 1-14
Author(s):  
Alem Čolaković ◽  
Adisa Hasković Džubur ◽  
Bakir Karahodža

Internet of Things (IoT) is the inter-networking paradigm based on many processes such as identifying, sensing, networking and computation. An IoT technology stack provides seamless connectivity between various physical and virtual objects. The increasing number of IoT applications leads to the issue of transmitting, storing, and processing a large amount of data. Therefore, it is necessary to enable a system capable to handle the growing traffic requirements with the required level of QoS (Quality of Service). IoT devices become more complex due to the various components such as sensors and network interfaces. The IoT environment is often demanding for mobile power source, QoS, mobility, reliability, security, and other requirements. Therefore, new IoT technologies are required to overcome some of these issues. In recent years new wireless communication technologies are being developed to support the development of new IoT applications. This paper provides an overview of some of the most widely used wireless communication technologies used for IoT applications.


Author(s):  
Prakash S. Prasad ◽  
Rashi Chouksey

By 2020, over fifty billion devices are connected through radio communications. In conjunction with the rising of the Internet of Things (IOT) market, low power wide space networks (LPWAN) became a most well-liked low-rate long-range radio communication technology. Sigfox, LORA, and NB-IoT are the 3 leading LPWAN technologies that vie for large-scale IoT preparation. This provides a comprehensive and comparative study of these technologies that perform economical solutions to connect sensible, autonomous, and heterogeneous devices. We have a tendency to show that Sigfox and LORA are advantageous in terms of battery lifespan, capacity, and cost. Meanwhile, NB-IoT offers advantages in terms of latency and quality of service. To boot, we have a tendency to analyze the IOT success factors of these LPWAN technologies.


2020 ◽  
Vol 14 (2) ◽  
pp. 264-270
Author(s):  
Andrea Liliana Fagua Fagua ◽  
José Custodio Najar Pacheco

In recent years, the Internet has evolved till become the Internet of Things (IoT for its acronym). This is one of the most important and significant inventions of all humanity, generating a direct impact on the way of how people live, think and act. It is one of the most used terms by anyone who talks about intelligent connectivity. Internet of things changes everything, is the answer to connect to the network an incredible number of people and link everyday objects, which are equipped with sensors, actuators and communication technologies and they are used to exchange information from the physical world through the Internet, offering data in real time and monitored through the network. Thanks to IoT, more and more companies are integrating small sensors to real-world objects, which provide information about almost everything that can be measured, so the amount of information circulating through networks grows exponentially. Smart cities are a good example of the benefits that IoT brings, by improving the quality of life of people with the services that are offered in an efficient and sustainable way. The installation of IoT brings great challenges focused on information security in organizations, but also opportunities for development in all areas of daily life and excellent ideas for innovation.


2021 ◽  
Author(s):  
Alexander Valach ◽  
Dominik Macko

<div>Number of embedded devices connected to the Internet is rapidly increasing, especially in the era of the Internet of Things (IoT). The growing number of IoT devices communicating wirelessly causes a communication-parameters selection problem, implying the increasing number of communication collisions. Multiple factors of IoT networks signify this problem, such as inability to communication-channel listening prior to the transmission (due to longer distances), energy constrains (due to inability of powering devices from the grid), or limitation of duty cycle and high interference (due to usage of unlicensed band in communication technologies). This article is focused on alleviating this problem in LoRa networks, which is one of the most promising technology for long-range and low-power</div><div>communication. We utilize the existing LoRa@FIIT protocol to achieve energy-efficient communication. The scalability of the LoRa network is increased by modifying the communication-parameters selection algorithm. By ensuring of quality of service mechanism at each node in the infrastructure, the application domain of the proposed architecture is widened. The simulation-based experimental results showed a significantly reduced number of collisions for mobile nodes, which reduces the channel congestion and the wasted energy by retransmissions.</div>


2021 ◽  
Vol 10 (1) ◽  
pp. 1-15
Author(s):  
Abhinav Juneja ◽  
Sapna Juneja ◽  
Vikram Bali ◽  
Sudhir Mahajan

There is an unprecedented growth of internet and internet-based technologies in the recent times. We are now switching to 5G as the most recent wireless communication technology. The internet of things has become a blessing for Industry 4.0 by challenging all the existing technologies in its utility for contributing to the industrial growth. There are a lot of wireless communication technologies for IoT, and it becomes difficult choice to select one suitable for an application. Authors have presented multi-criteria decision-making techniques which are very instrumental in making a confirmed decision on the choice of appropriate technology. This choice is done based on a number of deciding parameter which are used to differentiate between all the available options. The authors have identified 11 wireless communication technologies and seven parameters to evaluate the performance of the WCT's. All the seven parameters are considered in ranking and rank matrix is obtained. This technique can be very helpful for application designers so as to choose the right platform for their applications.


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