A home automation architecture based on LoRa technology and Message Queue Telemetry Transfer protocol

In recent years, Internet of Things technologies gained momentum in various application areas, including the Smart Home field. In this view, the smart objects available in the house can communicate with each other and with the outside world by adopting solutions already proposed for Internet of Things. In fact, among the challenges to face during the design and implementation of an Internet of Things–based Smart Home infrastructure, battery usage represents a key point for the realization of an efficient solution. In this context, the communication technology chosen plays a fundamental role, since transmission is generally the most energy demanding task, and Internet of Things communication technologies are designed to reduce as much as possible the power consumption. This article describes an Internet of Things–oriented architecture for the Smart Home, based on the long-range and low-power technology LoRa. Moreover, in order to enable the devices to communicate with each other and the outside world, the Message Queue Telemetry Transfer protocol is used as a domotic middleware. We show that LoRa, designed by having in mind the typical requirements of Internet of Things (i.e. low power consumption, sporadic transmission, and robustness to interference), is well-suited to also meet the need of more established home automation systems, specifically the low latency in message delivery. Interoperability among different devices may also be obtained through the Message Queue Telemetry Transfer midlleware.

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A Secure and Scalable Smart Home Gateway to Bridge Technology Fragmentation

Sensors ◽

10.3390/s21113587 ◽

2021 ◽

Vol 21 (11) ◽

pp. 3587

Author(s):

Ezequiel Simeoni ◽

Eugenio Gaeta ◽

Rebeca I. García-Betances ◽

Dave Raggett ◽

Alejandro M. Medrano-Gil ◽

...

Keyword(s):

Smart Home ◽

Home Automation ◽

Dynamic Configuration ◽

Home Gateway ◽

Security Authentication ◽

Living Lab ◽

Automation Systems ◽

Authentication And Authorization ◽

Iot Devices ◽

Bridge Technology

Internet of Things (IoT) technologies are already playing an important role in our daily activities as we use them and rely on them to increase our abilities, connectivity, productivity and quality of life. However, there are still obstacles to achieving a unique interface able to transfer full control to users given the diversity of protocols, properties and specifications in the varied IoT ecosystem. Particularly for the case of home automation systems, there is a high degree of fragmentation that limits interoperability, increasing the complexity and costs of developments and holding back their real potential of positively impacting users. In this article, we propose implementing W3C’s Web of Things Standard supported by home automation ontologies, such as SAREF and UniversAAL, to deploy the Living Lab Gateway that allows users to consume all IoT devices from a smart home, including those physically wired and using KNX® technology. This work, developed under the framework of the EC funded Plan4Act project, includes relevant features such as security, authentication and authorization provision, dynamic configuration and injection of devices, and devices abstraction and mapping into ontologies. Its deployment is explained in two scenarios to show the achieved technology’s degree of integration, the code simplicity for developers and the system’s scalability: one consisted of external hardware interfacing with the smart home, and the other of the injection of a new sensing device. A test was executed providing metrics that indicate that the Living Lab Gateway is competitive in terms of response performance.

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IMPLEMENTATION OF SMART HOME AUTOMATION USING INTERNET OF THINGS

Journal of Critical Reviews ◽

10.31838/jcr.07.14.254 ◽

2020 ◽

Vol 7 (14) ◽

Keyword(s):

Internet Of Things ◽

Smart Home ◽

Home Automation

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Energy-Efficient Method for Wireless Sensor Networks Low-Power Radio Operation in Internet of Things

10.20944/preprints202001.0194.v1 ◽

2020 ◽

Author(s):

Mehdi Amiri Nasab ◽

Shahaboddin Shamshirband ◽

Anthony Theodore Chronopoulos ◽

Amir Mosavi ◽

Narjes Nabipur

Keyword(s):

Wireless Sensor Networks ◽

Sensor Networks ◽

Internet Of Things ◽

Power Consumption ◽

Low Power ◽

Time Factors ◽

Wireless Sensor ◽

Common Source ◽

Factors Affecting ◽

Duty Cycles

The radio operation in wireless sensor networks (WSN) in the Internet of Things (IoT) applications are the most common source for power consumption. However, recognizing and controlling the factors affecting radio operation can be valuable for managing the node power consumption. ContikiMAC is a low-power Radio Duty-Cycle protocol in Contiki OS used in WakeUp mode, which is a clear channel assessment (CCA) to check radio status periodically. The time spent to check the radio is of utmost importance for monitoring power consumption. It can lead to false WakeUp or idle listening in Radio Duty-Cycles and ContikiMAC. This paper presents a detailed analysis of radio WakeUp time factors of ContikiMAC. Then, we propose lightweight CCA (LW-CCA) as an extension to ContikiMAC to reduce the percentage of Radio Duty-Cycles in false WakeUps and idle listenings by using dynamic received signal strength indicators (RSSI) status check time. The simulation results in the Cooja simulator show that LW-CCA reduces about 8% energy consumption in nodes while maintaining up to 99% of the packet delivery rate (PDR).

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MICKEY 2.0.85: A Secure and Lighter MICKEY 2.0 Cipher Variant with Improved Power Consumption for Smaller Devices in the IoT

Symmetry ◽

10.3390/sym12010032 ◽

2019 ◽

Vol 12 (1) ◽

pp. 32 ◽

Cited By ~ 2

Author(s):

Ahmed Alamer ◽

Ben Soh ◽

David E. Brumbaugh

Keyword(s):

Internet Of Things ◽

Power Consumption ◽

Low Power ◽

Internal State ◽

Rfid Technology ◽

New Directions ◽

Frequency Identification ◽

Reducing Costs ◽

Test Suites ◽

Significant Attention

Lightweight stream ciphers have attracted significant attention in the last two decades due to their security implementations in small devices with limited hardware. With low-power computation abilities, these devices consume less power, thus reducing costs. New directions in ultra-lightweight cryptosystem design include optimizing lightweight cryptosystems to work with a low number of gate equivalents (GEs); without affecting security, these designs consume less power via scaled-down versions of the Mutual Irregular Clocking KEYstream generator—version 2-(MICKEY 2.0) cipher. This study aims to obtain a scaled-down version of the MICKEY 2.0 cipher by modifying its internal state design via reducing shift registers and modifying the controlling bit positions to assure the ciphers’ pseudo-randomness. We measured these changes using the National Institutes of Standards and Testing (NIST) test suites, investigating the speed and power consumption of the proposed scaled-down version named MICKEY 2.0.85. The (85) refers to the new modified bit-lengths of each MICKEY 2.0 register. The results show that it is faster, requires less power, and needs fewer GEs. The proposed variant will enhance the security of applications, such asRadio-frequency identification (RFID) technology, sensor networks, and in Internet of things (IoT) in general. It also will enhance research on the optimization of existing lightweight cryptosystems.

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