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Recently, the SDN paradigm, which splits the control and data planes, initially defined for wired networks, has been considered as a solution for the management of WSNs (Wireless Sensor Networks). However, the adoption of OpenFlow protocol, the most widely deployed SDN standard, directly into the WSNs may require novel / customized hardware or incur significant signaling overhead. This paper proposes...
Energy Harvesting is a solution for continued operation of WSNs without depending on batteries. This paper introduces REAPer, an adaptive energy harvester for microsources that can be configured and monitored by the supplied WSN node. We combine REAPer with an IdealVolting capable sensor node that can fully exploit the monitoring and control capabilities of REAPer. The efficiency and overhead of the...
In this paper we present a new approach to reduce the amount of required data transfers in wireless sensor networks by distributed in-network processing of spatial sensor data. The measurements of local clusters are described by a model consisting of a set of Virtual Sensors (V S). Quasi optimal positions of the VS in-between real sensors are calculated on sensor nodes, which act as cluster heads...
Future warehouses will be made of modular embedded entities with communication ability and energy aware operation attached to the traditional materials handling and warehousing objects. This advancement is mainly to fulfill the flexibility and scalability needs of the emerging warehouses. However, it leads to a new layer of complexity during development and evaluation of such systems due to the multidisciplinarity...
Internet-of-things (IoT) paradigm exploits the Distributed Measurement System (DMS) to execute measurements. Each node of the DMS has computational and communicative capabilities, and can be equipped by sensors and measurement instruments. Therefore, it can be assumed as Smart Object (SO). The availability of mobile SO (MSO) (cars, smartphones, drones) is taken into consideration in the research to...
This study investigates the opportunities for transmission power control (TPC) protocols in resource constrained wireless sensor networks (WSNs). The paper begins by creating a generalised model to describe the relationship between transmission power, communication reliability and energy consumption. Applying this model to the performance of state-of-the-art radio hardware, the maximum potential energy...
Aim at the problems existing in the information monitoring of the farmland environment such as the limited energy, low system stability and large monitoring area, a WSN node for rice field based on hybrid antenna is designed to realize the real-time on-line monitoring for the environmental parameters of rice fields in the network. As for the hardware, the node uses a STM32F103VET6 as a processing...
The necessity to (re-)configure Internet of Things devices such as smart sensors during their entire lifecycle is becoming more important due to recent attacks targeting these devices. Allowing configuration parameters to be changed in any phase of a smart sensor's lifecycle allows security updates or new key material to be applied. Also, the functionality of a smart sensor can be altered by changing...
This paper explores the use of On-chip cryptographic units for implementing security in low cost wireless sensor networks. The objective of this research is to reduce the deployment time and computational complexity of security protocols in WSNs, whilst keeping security related performance parameters at par with the current state-of-the-art. A method is proposed to continue using simple radio transreceiver...
The Internet of Things (IoT) and cloud computing are the prime focus of the current research and development in all field of study. In this work, an attempt is made to enhance the integration of wireless sensor network (WSN) in IoT environment with cloud computing for health care system. IoT is a dynamic network infrastructure, that interconnects different sensor networks through Internet, acquire...
With an increase in the number of warehouses, cold storage units and factories in today's industrialized and automated world, the need for monitoring various attributes in such factories has become a thing of great necessity. With advances in technology, and in particular, the various sensors to measure different parameters such as temperature, gases, humidity etc. have become more viable and affordable...
As wireless sensor networks become more ubiquitous in the world, the need for lightweight, resilient time synchronization protocols is apparent. Wireless nodes' internal clocks are subject to drift over time due to manufacturing imperfections and environmental changes. While various protocols have been introduced that attempt to correct for this drift, they each have their own peculiarities and issues...
To improve the localization accuracy of wireless sensor networks (WSNs) node for underground tunnel monitoring, we propose a method to improve the localization accuracy of Received Signal Strength Indication by using the anchor node selection mechanism, which is based on the three-dimensional space characteristics of the mine and the choice of the wireless communication frequency. Firstly, we sort...
LoRa, an emerging wireless technology, is examined for long range communication performance in a large area. Although LoRa shows good performance for long-distance transmission in the countryside, its radio signals can be attenuated and interfered with by buildings, trees and other signal sources. In urban areas, our observation shows that LoRa requires a dense deployment of LoRa gateways to ensure...
In this paper, we design and implement the programmable nodes in software-defined sensor networks. Combining the emerging software defined networking (SDN) and the existing wireless sensor networks (WSNs), we propose an SDN-based sensor network architecture, called as software defined sensor networks (SDSN), which is composed of one centralized controller node, named as SDSN programmable controller...
In this paper we proposed a UAV-based wireless network for bridging communication between nodes on the ground. The proposed method provides on the fly communication facilities in order to connect two machines through a wireless access point mounted on a UAV through IEEE 802.11n. We conducted our experiments in an outdoor environment to investigate the performance of 802.11n at both 2.4 and 5 GHz band...
In Wireless Sensor Networks (WSN), when a hardware error is not identified and promptly corrected, all monitoring of a sensor network is compromised. This work presents a new approach to centralized fault management system for 6LoWPAN WSN. The system is based on two fault detection levels. A first level is performed locally, by all sensors within the network, using statistical methods. The second...
The introduction of Internet of Things (IoT) and smart cities is widely viewed as a great opportunity that stimulated the modern view of wireless sensor networks (WSNs). Up to this point, WSNs were application-driven systems with well defined challenges and requirements. The idea of IoT and smart cities increased the amount of available data and magnified the hardware and software challenges of sensor...
Advances in microsystem technology have led to an increasing trend of cyber physical system integration into industrial environments for prognostic health monitoring. Harsh environmental conditions require wireless sensor nodes (WSNs) that are robustness and reliable whilst meeting the requirements of miniaturization, functional integrity and energy efficiency at the same time. Moreover design and...
WiFi networks are vulnerable to rogue AP attacks in which an attacker sets up an imposter AP to lure mobile users to connect. The attacker can eavesdrop on the communication, severely threatening users' privacy. Existing rogue AP detection solutions are confined to some specific attack scenarios (e.g., by relaying the traffic to a target AP) or require additional hardware. In this paper, we propose...
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