Thorben Iggena

• Master of Science
• Research Associate at Osnabrück University of Applied Sciences

Long Range Wide Area Network (LoRaWAN) operates in the ISM band with 868 MHz, where the Time on Air (ToA) is regulated in the EU to 1 %. LoRaWAN nodes use the Adaptive Data Rate (ADR) algorithm to adapt their data rates during operation. The standard ADR algorithm works well with stationary nodes, however is very slow in the adaptation for mobile n...

Due to the rapid development of the Internet of Things (IoT) and consequently, the availability of more and more IoT data sources, mechanisms for searching and integrating IoT data sources become essential to leverage all relevant data for improving processes and services. This paper presents the IoT search framework IoTCrawler. The IoTCrawler fram...

Eine zunehmende Anzahl von Agrarprozessen wird in Kooperation verschiedener Akteure bearbeitet. Eine Silomaisernte verlangt nach einem optimierten Zusammenspiel von Erntemaschine, abfahrenden Traktorgespannen, Waage und Siloverdichtung. Bei einer teilflächenspezifischen Flüssigmistausbringung müssen Ausbringwagen, Zubringer, Analysewerkzeuge sowie...

In Germany, administrative specifications must be strictly observed for N (nitrogen) and P (phosphorus) fertilization. There are several factors need to be taken into account when calculating nutrient fertilizer levels. The main calculation factor for the nutrient amounts for N, P and K (potassium) is the expected yield respectively a 3-year yield...

Without modern agricultural technology, it would not be possible to feed the world’s steadily growing population. In order to be able to handle this task in the future, new improvements must be constantly developed to improve agriculture and increase yields. These include methods known as ’Precision Farming’, ’Smart Farming’ or ’Farming 4.0’. These...

Over the last years many different agricultural online management portals got to market. The focus of these portals is on documentation, accounting and task planning. Data analyses and process planning are often not considerd. For this reason, the existing data in the data platforms of present portals is often badly integrated and consequently not...

The chapter presents an overview of the eight that are part of the European IoT Security and Privacy Projects initiative (IoT-ESP) addressing advanced concepts for end-to-end security in highly distributed, heteroge- neous and dynamic IoT environments. The approaches presented are holistic and include identification and authentication, data prote...

An increasing number of cities are confronted with challenges resulting from the rapid urbanisation and new demands that a rapidly growing digital economy imposes on current applications and information systems. Smart city applications enable city authorities to monitor, manage and provide plans for public resources and infrastructures in city envi...

Heterogeneous sensor device networks with diverse maintainers and information collected via social media as well as crowdsourcing tend to be elements of uncertainty in IoT and Smart City networks. Often, there is no ground truth available that can be used to check the plausibility and concordance of the new information. This paper proposes the Vali...

In der Agrartechnik steht Landwirten und Lohnunternehmern eine steigende Anzahl digitaler Dienste zur Verfügung. Eine Modellierung, Ausführung und Steuerung von kooperativen Agrarprozessen ist aufgrund der verschiedenen, zueinander inkompatiblen IT-Lösungen nur eingeschränkt möglich. Es fehlt ein einheitlicher Standard zur Beschreibung dieser Proze...

Die Unterstützung des Maschinenführers auf der Landmaschine durch digitale Dienste nimmt immer stärker zu. Die Darstellungsmöglichkeiten sind jedoch auf die Größe der eingesetzten Terminals beschränkt. Um Sichteinschränkungen aus der Kabine durch zusätzliche Terminals zu vermeiden, ist der Einsatz von Augmented Reality sinnvoll. Hier lassen sich di...

Our world and our lives are changing in many ways. Communication, networking, and computing technologies are among the most influential enablers that shape our lives today. Digital data and connected worlds of physical objects, people, and devices are rapidly changing the way we work, travel, socialize, and interact with our surroundings, and they...

The wide distribution of smart phones allows to inform and interact with citizens in real-time, thus enabling the vision of smart cities. However, the reliability of smart city applications highly depends on the availability of appropriate, ac- curate, and trustworthy data. To increase the reliability of smart city applications, the European projec...

For Delay-Tolerant Networks (DTNs) many routing algorithms have been suggested. However, their performance depends heavily on the applied scenario. Especially heterogeneous scenarios featuring known and unknown node movements as well as different kinds of data lead to either poor delivery ratios or exhausted network resources. To overcome these pro...

Smart City is a generic term that refers to interconnection of real-world services, which are provided by smart objects, and sensors that enable interaction with the physical world. Cities are evolving into large interconnected ecosystems in an effort to improve sustainability and operational efficiency of the city services and infrastructure. Howe...

Unterbrechungsbehaftete und diskontinuierliche Kommunikationspfade erschweren die Zustellung von Datenpaketen in verzögerungstoleranten Netzwerken. Bevor Datenpakete ihr Ziel erreichen, passieren sie vielfach diverse Hops, auf denen sie entsprechend dem Store-Carry-Forward-Prinzip zwischengespeichert und ggf. vervielfältigt werden. Herausforderunge...