scholarly journals Analytical Study of Periodic Restricted Access Window Mechanism for Short Slots

Electronics ◽  
2021 ◽  
Vol 10 (5) ◽  
pp. 549
Author(s):  
Elizaveta Zazhigina ◽  
Ruslan Yusupov ◽  
Evgeny Khorov ◽  
Andrey Lyakhov
Keyword(s):  
Internet Of Things ◽  
Analytical Study ◽  
Measurement Data ◽  
Access Point ◽  
The Novel ◽  
Time Intervals ◽  
Average Delay ◽  
Restricted Access ◽  
Low Energy Consumption ◽  
The Internet Of Things

The tremendous number of devices involved in the Internet of Things is bringing new challenges to wireless networking. The more devices that transmit in a wireless network, the higher the contention for the channel. The novel Wi-Fi HaLow standard introduces a new channel access mechanism called the Periodic Restricted Access Window (PRAW), which aims to reduce this contention. With this mechanism, an access point can define a series of time intervals during which only a predefined group of stations can transmit data while the other stations are forbidden to access the channel. Unfortunately, the standard does not suggest how to configure the PRAW mechanism according to scenario-specific requirements and restrictions. Many Internet of Things scenarios require the fast and low energy consumption delivery of measurement data from wireless sensors while saving channel resources for other stations that transmit, for example, multimedia traffic. Therefore, this paper studies the problem of the minimization of the channel timeshare consumed by the PRAW with restrictions on the average delay and power consumption. To solve the problem and configure the PRAW optimally, a novel analytical model is developed. The key feature of the model is the consideration of the case of short PRAW slots that allow the computational complexity to be reduced and high accuracy to be achieved. These properties make the model suitable for implementation in real devices.

scholarly journals Defending against the Novel Coronavirus (COVID-19) outbreak: How can the Internet of Things (IoT) help to save the world?

2020 ◽  
Vol 9 (2) ◽  
pp. 136-138 ◽  
Author(s):  
Md. Siddikur Rahman ◽  
Noah C. Peeri ◽  
Nistha Shrestha ◽  
Rafdzah Zaki ◽  
Ubydul Haque ◽  
...  
Keyword(s):  
Internet Of Things ◽  
The Internet ◽  
The Novel ◽  
The World ◽  
Novel Coronavirus ◽  
The Internet Of Things

scholarly journals Solar-Supplied Satellite Internet Access Point for the Internet of Things in Remote Areas

Sensors ◽  
2020 ◽  
Vol 20 (5) ◽  
pp. 1409
Author(s):  
Angus Wong ◽  
Yan Tai Chow
Keyword(s):  
Internet Of Things ◽  
Solar Energy ◽  
Internet Access ◽  
Access Point ◽  
Satellite Communications ◽  
The Internet ◽  
Wireless Technology ◽  
Internet Connectivity ◽  
Remote Areas ◽  
The Internet Of Things

As satellite communications provide ubiquitous coverage, they play a key role in providing Internet connectivity in remote or marginalized areas, so as to enable the vision of a truly global connectivity of the Internet of Things (IoT). However, these areas often lack reliable electricity supply. Thus, this paper proposes a satellite internet access point powered by solar energy, so that a stable Internet connection can be provided. The access point provides Wi-Fi coverage so that sensors, IoT, and devices can connect to the access point using the Wi-Fi, a common wireless technology. Our design took some cost-saving measures to make it affordable and selected the components that require minimal maintenance operations. The satellite access point costs about USD $500, and can provide four days of Internet connectivity without solar energy.

scholarly journals What Is the Fastest Way to Connect Stations to a Wi-Fi HaLow Network?

Sensors ◽  
2018 ◽  
Vol 18 (9) ◽  
pp. 2744 ◽  
Author(s):  
Dmitry Bankov ◽  
Evgeny Khorov ◽  
Andrey Lyakhov ◽  
Ekaterina Stepanova ◽  
Le Tian ◽  
...  
Keyword(s):  
Internet Of Things ◽  
Optimal Algorithm ◽  
Access Point ◽  
The Internet ◽  
Shared Channel ◽  
Set Up ◽  
The Internet Of Things ◽  
Self Adaptive

Wi-Fi HaLow is an adaptation of the widespread Wi-Fi technology for the Internet of Things scenarios. Such scenarios often involve numerous wireless stations connected to a shared channel, and contention for the channel significantly affects the performance in such networks. Wi-Fi HaLow contains numerous solutions aimed at handling the contention between stations, two of which, namely, the Centralized Authentication Control (CAC) and the Distributed Authentication Control (DAC), address the contention reduction during the link set-up process. The link set-up process is special because the access point knows nothing of the connecting stations and its means of control of these stations are very limited. While DAC is self-adaptive, CAC does require an algorithm to dynamically control its parameters. Being just a framework, the Wi-Fi HaLow standard neither specifies such an algorithm nor recommends which protocol, CAC or DAC, is more suitable in a given situation. In this paper, we solve both issues by developing a novel robust close-to-optimal algorithm for CAC and compare CAC and DAC in a vast set of experiments.

Security Model of Internet of Things Based on Binary Wavelet and Sparse Neural Network

2019 ◽  
Vol 10 (1) ◽  
pp. 1-17
Author(s):  
Zhihui Wang ◽  
Jingjing Yang ◽  
Benzhen Guo ◽  
Xiao Zhang
Keyword(s):  
Neural Network ◽  
Internet Of Things ◽  
Network Architecture ◽  
Safety Management ◽  
The Internet ◽  
Security Model ◽  
The Novel ◽  
Simulated Environment ◽  
Proposed Model ◽  
The Internet Of Things

At present, the internet of things has no standard system architecture. According to the requirements of universal sensing, reliable transmission, intelligent processing and the realization of human, human and the material, real-time communication between objects and things, the internet needs the open, hierarchical, extensible network architecture as the framework. The sensation equipment safe examination platform supports the platform through the open style scene examination to measure the equipment and provides the movement simulated environment, including each kind of movement and network environment and safety management center, turning on application gateway supports. It examines the knowledge library. Under this inspiration, this article proposes the novel security model based on the sparse neural network and wavelet analysis. The experiment indicates that the proposed model performs better compared with the other state-of-the-art algorithms.

Internet of Things

2017 ◽  
pp. 241-259 ◽  
Author(s):  
Edewede Oriwoh ◽  
Geraint Williams
Keyword(s):  
Internet Of Things ◽  
Autonomous System ◽  
Digital Forensics ◽  
New Technologies ◽  
The Self ◽  
The Internet ◽  
The Novel ◽  
Security Vulnerabilities ◽  
Security Breaches ◽  
The Internet Of Things

The Internet of Things (IoT), a metaphor for smart, functional Cyberphysical Environments (CPE), is finding some usefulness in various sectors including healthcare, security, transportation, and the Smart Home (SH). Within the IoT, objects potentially operate autonomously to provide specified services and complete assigned tasks. However, the introduction of new technologies and/or the novel application of existing ones usually herald the discovery of unfamiliar security vulnerabilities, which lead to exploits and sometimes to security breaches. There is existing research that identifies IoT-related security concerns and breaches. This chapter discusses existing Digital Forensics (DF) models and methodologies for their applicability (or not) within the IoT domain using the SH as a case in point. The chapter also makes the argument for smart forensics, the use of a smart autonomous system (tagged the Forensics Edge Management System [FEMS]) to provide forensic services within the self-managed CPE of the SH.

Techno-managerial implications towards communication in internet of things for smart cities

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Avinash Pawar ◽  
Ashutosh Kolte ◽  
Balkrishan Sangvikar
Keyword(s):  
Internet Of Things ◽  
Urban Areas ◽  
Design Methodology ◽  
Smart Cities ◽  
The Internet ◽  
The Novel ◽  
Content Type ◽  
The People ◽  
Managerial Implications ◽  
The Internet Of Things

Purpose The purpose of this paper is to explore the significance of the internet of things (IoT) system for smart cities and deliberate on the technological aspects involved in developing smart cities along with the framework, impact and benefits of IoT for smart cities. Design/methodology/approach This research is based on the review and synthesis of the papers on the broader areas of IoT for the application and implication towards the smart cities. The prime focus of this paper is to realize the IoT systems for smart city’s development and implementation of various technologies in the context of the Indian environment. Findings The outcome of the paper explores the highlights of the importance of the IoT system, including the technological framework, impact and benefits for smart cities. The outcome also highlights the application of IoT for smart cities. This paper provides direction regarding future degrees, potential conceivable outcomes and issues concerning the technological side of smart cities. IoT can change the lives of the people and support evolving urban areas for developing smart cities in India. Originality/value The paper deliberates on the novel techno-managerial approach towards the endeavour of smart cities using the IoT.

scholarly journals Uma Análise dos Protocolos de Comunicação para Internet das Coisas

2019 ◽  
Author(s):  
Arthur Brito Cosmi ◽  
Vinicius F. S. Mota
Keyword(s):  
Decision Making ◽  
Internet Of Things ◽  
Qualitative Analysis ◽  
Access Point ◽  
The Internet ◽  
Application Layer ◽  
The Internet Of Things

With the growth of devices connected to the Internet, several application layer protocols specific for the Internet of Things (IoT) appear every day. This high number of protocols bring doubts to developers about what to use in their projects. This work aims to assist developers in the decision making in their IoT projects. This work presents a qualitative analysis of the MQTT, MQTT-SN, CoAP and AMQP protocols. In a qualitative way, we analyzed thedomains of application and requirements of the applications to map the protocol choice. After that, the MQTT and CoAP protocols were analyzed using devices with low processing and memory capabilities. Results show that MQTT outperforms CoAP when there are several other devices accessing the same access point.

scholarly journals Analisis Kinerja Protokol MQTT dan HTTP Pada Akuisisi Data Magnet Berbasis Internet of Things

2021 ◽  
Vol 6 (2) ◽  
pp. 71-80
Author(s):  
Hairatunnisa Hairatunnisa ◽  
Hapsoro Agung Nugroho ◽  
Relly Margiono
Keyword(s):  
Internet Of Things ◽  
Packet Loss ◽  
Measurement Data ◽  
Magnetic Data ◽  
Average Delay ◽  
Average Value ◽  
Data Transmission System ◽  
Packet Length ◽  
Http Protocol ◽  
Communication System Design

One of the determinants of the quality of magnetic data is continuous data, so we need a data transmission system that can continuously transmit observational data. In this research, a magnetometer communication system design was carried out with the concept of the Internet of Things (IoT) using the MQTT and HTTP protocol, where measurement data in the form of the x-axis, y-axis, z-axis, horizontal components, and total magnetic field components are displayed on the dashboard in real time and continuously. Testing the performance of sending data is done using the Wireshark, it is known that the MQTT protocol has a better delivery quality compared to the HTPP protocol with an average delay value of 0.0120 seconds, an average value of packet length of 54 bytes and a packet loss value of 0.11%, while the HTTP protocol has an average delay value of 0.0257 seconds, an average packet length value of 268.1 bytes and a packet loss value of 0.5%.

scholarly journals Smart Door System Prototype with a Control Based on Biometric Palmprint and the Internet of Things

2020 ◽  
Vol 55 (6) ◽  
Author(s):  
Doan Perdana ◽  
Panca Aji Pamungkas ◽  
Arif Indra Irawan
Keyword(s):  
Internet Of Things ◽  
Security System ◽  
Line Of Sight ◽  
The Internet ◽  
Total System ◽  
Average Delay ◽  
Palm Of The Hand ◽  
System Prototype ◽  
The Internet Of Things ◽  
Gain Access

Safety is important in terms of comfort and security in a home, because a house is a place where people live and store valuable items. However, conventional keys that are widely used today are still vulnerable to break-ins. Therefore, a reliable and qualified security system is needed to safeguard a person’s home. To overcome this problem, this study proposed a security system to access the door of a house to maintain the home’s security. This door access security system is based on Palmprint, in which a certain line on a person’s palm is used to open the door and gain access into the house. Palmprint is supported by the Internet of Things system so that residents can remotely control and access the door lock. The use of biometric authentication will replace a conventional key so that the door will only be opened if the lines on the palm of the hand can be identified in accordance with the data registered by the owner. If a burglary occurs or if the lock is forced, the system will notify the residents of the house through their Palmprint application. The results show that the network system works optimally in the Line of Sight scenario with a distance of 5 meters, and it produces a data delay measuring 0.255436 s; moreover, a throughput of 8825,933 bytes/s is obtained from end-to-end testing of the total system in the 5 meter Line of Sight scenario with a total average delay of 0.570077 s and an average throughput of 11776.27 bytes/s.

scholarly journals PROTOTIPE SISTEM MONITORING PENGGUNAAN DAYA LISTRIK PERALATAN ELEKTRONIK RUMAH TANGGA BERBASIS INTERNET OF THINGS

Petir ◽  
2019 ◽  
Vol 12 (1) ◽  
Author(s):  
Budi Prayitno
Keyword(s):  
Internet Of Things ◽  
Monitoring System ◽  
Electrical Power ◽  
Measurement Data ◽  
Large Power ◽  
Household Appliances ◽  
Air Conditioners ◽  
Current Voltage ◽  
The Internet Of Things ◽  
Server System

Power consumption of PLN customers from household sector is quite large. It comes from the use of household appliances, such as refrigerators, televisions, dispensers, lights and air conditioners. The customers assume that their electricity usage is wasteful, but unfortunately it couldn’t  be known in detail which household electrical appliances spend the most electricity. So that, difficult for the customers to monitor the power usage of each household electrical equipments. Regarding to this issue, this research focused on making a prototype of a household electrical power usage monitoring system. This system can be used by PLN customers of households sector to find out which household appliances use large power, so that the customers can manage the use of household appliances. In implementing that monitoring, it needs a capable wattmeter devices to measure the power usage of household electronic equipments The results of this measurement electric current, voltage, and power data measured through sensors. Those measurement data is sent to the database server system monitoring through the internet of things (IoT) device so that monitoring can be done through the system in a real time. This study produced a prototype of household electronic equipments power usage monitoring system based on IoT.

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