Search results for "LoRaWAN"
showing 10 items of 15 documents
Exploratory approach for network behavior clustering in LoRaWAN
2021
AbstractThe interest in the Internet of Things (IoT) is increasing both as for research and market perspectives. Worldwide, we are witnessing the deployment of several IoT networks for different applications, spanning from home automation to smart cities. The majority of these IoT deployments were quickly set up with the aim of providing connectivity without deeply engineering the infrastructure to optimize the network efficiency and scalability. The interest is now moving towards the analysis of the behavior of such systems in order to characterize and improve their functionality. In these IoT systems, many data related to device and human interactions are stored in databases, as well as I…
Dynamic Adaptation of LoRaWan Traffic for Real-time Emergency Operations
2022
Modern standards for IoT communications support fast deployment, large coverage in the order of kilometers, and physical layer adaptations to increase link robustness under time-varying propagation and interference conditions. A possible use of such IoT technologies is in case of emergency scenarios where first responders (FRs) arrive after a disastrous event. Indeed, an important challenge for emergency management is the need to (re)establish real-time communication capabilities and to offer integrated decision making facilities based on information gathered by FRs acting on the crisis site. In this paper, we present a system architecture based on LoRaWAN technology for connecting emergenc…
Discovery privacy threats via device de-anonymization in LoRaWAN
2021
LoRaWAN (Long Range WAN) is one of the well-known emerging technologies for the Internet of Things (IoT). Many IoT applications involve simple devices that transmit their data toward network gateways or access points that, in their turn, redirect data to application servers. While several security issues have been addressed in the LoRaWAN specification v1.1, there are still some aspects that may undermine privacy and security of the interconnected IoT devices. In this paper, we tackle a privacy aspect related to LoRaWAN device identity. The proposed approach, by monitoring the network traffic in LoRaWAN, is able to derive, in a probabilistic way, the unique identifier of the IoT device from…
A Clustering approach for profiling LoRaWAN IoT devices
2019
Internet of Things (IoT) devices are starting to play a predominant role in our everyday life. Application systems like Amazon Echo and Google Home allow IoT devices to answer human requests, or trigger some alarms and perform suitable actions. In this scenario, any data information, related device and human interaction are stored in databases and can be used for future analysis and improve the system functionality. Also, IoT information related to the network level (wireless or wired) may be stored in databases and can be processed to improve the technology operation and to detect network anomalies. Acquired data can be also used for profiling operation, in order to group devices according…
LoRaWAN datu pārraides tīkla veiktspējas novērtējums Rīgas pilsētā un tās apkaimē
2018
Zemas enerģijas patēriņa, plaša pārklājuma datu pārraides tehnoloģijas (LPWAN) pēdējo gadu laikā arvien vairāk tiek izmantotas dažādu tautsaimniecības problēmu risināšanai. Paralēli noris aktīvi šo tehnoloģiju pētījumi un attīstība, kā arī meklēti praktiski tehnoloģiju pielietojumi lietu interneta (Internet of Things jeb IoT) vidē. Darba mērķis ir izpētīt zemas enerģijas patēriņa, liela pārklājuma bezvadu datu pārraides tehnoloģijas un to realizāciju ar LoRaWAN tehnoloģijas palīdzību. Papildu teorētiskajiem pētījumiem, darba mērķis ir praktiski pārbaudīt, vai LoRaWAN datu pārraides pārklājums atbilst dokumentācijā aprakstītajam, ka pilsētā tas var sasniegt līdz pat 8 km distanci. Darba prak…
Performance of LoRa for Bike-Sharing Systems
2019
Today bike sharing systems are becoming popular in many cities as short-distance transit vehicles. More than 18 million bicycles are available worldwide for public use and one of the main problems that afflicts such sharing systems is the loss of bikes, which can be stolen or simply left in unknown locations. Thus, many bikes are docked or tracked using GPS and costly cellular connections. In this paper, we consider the emerging Long Range (LoRa) technology for use in bike sharing systems. LoRa exploits free ISM bands and has been conceived for low power and low data rate applications. Additionally, LoRa is characterized by large cells and heterogeneous application domains, which may lead t…
Interference Cancellation for LoRa Gateways and Impact on Network Capacity
2021
In this paper we propose LoRaSyNc (LoRa receiver with SyNchronization and Cancellation), a second generation LoRa receiver that implements Successive Interference Cancellation (SIC) and time synchronization to improve the performance of LoRa gateways. Indeed, the chirp spread spectrum modulation employed in LoRa experiences very high capture probability, and cancelling the strongest signal in case of collisions can significantly improve the cell capacity. An important feature of LoRaSyNc is the ability to track the frequency and clock drifts between the transmitter and receiver, during the whole demodulation of the interfered frame. Due to the use of low-cost oscillators on end-devices, a s…
A Survey on LoRa for Smart Agriculture: Current Trends and Future Perspectives
2023
This paper provides a survey on the adoption of LoRa in the agricultural field, and reviews state-of-the-art solutions for Smart Agriculture, analyzing the potential of this technology in different infield applications. In particular, we consider four reference scenarios, namely irrigation systems, plantation and crop monitoring, tree monitoring, and livestock monitoring, which exhibit heterogeneous requirements in terms of network bandwidth, density, sensors’ complexity, and energy demand, as well as latency in the decision process. We discuss how LoRa-based solutions can work in these scenarios, analyzing their scalability, interoperability, network architecture, and energy-efficiency. Fi…
Leakage Detection via Edge Processing in LoRaWAN-based Smart Water Distribution Networks
2022
The optimization and digitalization of Water Distribution Networks (WDNs) are becoming key objectives in our modern society. Indeed, WDNs are typically old, worn and obsolete. These inadequate conditions of the infrastructures lead to significant water loss due to leakages inside pipes, junctions and nodes. It has been measured that in Europe the average value of lost water is about 26 %. Leakage control in current WDNs is typically passive, repairing leaks only when they are visible. Emerging Low Power Wide Area Network (LPWAN) technologies, and especially IoT ones, can help monitor water consumption and automatically detect leakages. In this context, LoRaWAN can be the right way to deploy…
Ar LoRaWAN raidītājiem aprīkotu objektu monitoringa sistēma
2022
Putnu migrācijas pētījumi palīdz uzzināt daudz jauna par putnu dzīvesveidu. Šiem pētījumiem bieži tiek izmantoti nelieli putni, jo tie ir vieglāk pieejami. Nelielu putnu migrācijas pētījumos šobrīd īsti nav iespēju noteikt putnu lokāciju migrācijas laikā. Izmantojot šā brīža modernākās ierīces, putnu migrācijā dati tiek iegūti, uzliekot vides uztveršanas ierīci putnam, noņemot to nākamajā ligzdošanas periodā (pēc gada). Migrācijas ceļi pēc šādas metodes tiek rēķināti no sensoru datiem pēc tam, kad putns ir atgriezies ligzdošanas vietā. Tā kā putna ķermenis ir viegls, tad arī ierīcei, kas lokācijas datus pārraidītu, ir jābūt nelielai, vieglai un ar zemu enerģijas patēriņu. Darbā apskatītais …