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Comparative Analysis of Ranging Protocols for Localization by UWB in Outdoor

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Wireless Sensor Network 2018年第5期10卷 103-117页

作者： salick diagne Thierry Val Abdou Karim Farota Bouya Diop Laboratoire des Sciences de l’Atmosphère et des Océans UFR SAT/UGB Saint-Louis Sénégal Institut de Recherche en Informatique de Toulouse Université de Toulouse Blagnac France

The rapid evolution of technology in the field of wireless telecommunications and micro components using MEMS technologies (Micro-electromechanical systems) has contributed to the expansion and rapid development of wireless sensor networks (WSN). This rapid development has contributed to the appearance of sensor and actuator networks (WSAN) or even to the Internet of Things with DL-IoT (Device Layer-Internet of Things). This rapid evolution of WSN is due to the enthusiasm generated by this last in industry and research. This new technology is used in several applications, particularly in the outdoor location of communicating nodes. The process of distance calculation between nodes (ranging) is a primordial phase for a precise location of these nodes. This paper presents the result of measurements does with three ranging protocols (TWR, TWR_Skew and SDS-TWR) implemented on DecaWiNo nodes. DecaWiNo nodes use the Ultra-Wide Band (UWB) radio links, proposed by the IEEE 802.15.4 standard amendment of the year 2007, which provides a high-performance ranging by ToF (Time of Flight) [1] [2]. The results are very promising with precision errors of the order of 50 cm over 20 meters.

关键词： Outdoor Location UWB Ranging ToF TWR DecaWiNo

Performances Analysis of a System of Localization by Angle of Arrival UWB Radio

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International Journal of Communications, Network and System Sciences 2020年第2期13卷 15-27页

作者： salick diagne Thierry Val Abdou Karim Farota Bouya Diop Ognadon Assogba Laboratoire des Sciences de l’Atmosphère et des Océans: Matériaux Energies et Dispositifs (LSAO-MED) Gaston Berger University Saint-Louis Senegal IRIT University of Toulouse2 Toulouse France

The increasingly widespread use of sensor and actuator networks and in general of the Internet of Things (IoT) in several areas of precision, imposes upon localization systems that can often equip them with a robust and more precise localization. It is in this sense that UWB technology has proved to be one of the most powerful communication technologies for these localization systems;thanks, in particular to the bandwidth occupied instantaneously by the signal allowing a very fine temporal resolution. Constructors have set up localization kits based on various technologies. These kits facilitate in a way the work of localization of users. In this paper, we present results on the performance study of the Decawave PDoA Kit. This Kit uses the PDoA (Phase Difference of Arrival) to determine the Angle of Arrival (AoA) parameter with UWB technology. This study is in context of localization by AoA for an application to protect agricultural crops against grain-eating birds. The results of the study show overall AoA measurement errors around 10 degrees in an ideal environment.

关键词： Angle of Arrival (AoA) Localization UWB PDoA

Solar Energy Recovery and Storage System for Powering Wireless Communicating Nodes

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Energy and Power Engineering 2021年第12期13卷 377-391页

作者： salick diagne Abdou Karim Farota Ognadon Assogba Bouya Diop Thierry Val Gaston Berger University Saint-Louis Senegal IRIT University of Toulouse 2 Toulouse France

We find nowadays in several fields of application the presence of IoT technology such as wireless sensor and actuator networks. In this technology, one of the main points of study is the management of energy consumption. In this article, we provide a solar energy harvesting and storage system for powering wireless nodes. The system we propose uses a low power solar pane a P & O control adapted to fuzzy logic for the MPPT. For energy storage, we used the supercapacitor technology. The simulation of the models shows better results than using the P & O command for an autonomous power supply of the wireless communicating nodes in the study region.

关键词： Solar Energy Energy Recovery Supercapacitor Fuzzy Logic

Simulation of a Prototype 5G Network Integrating D2D Communication and MEC Technology

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Circuits and Systems 2023年第7期14卷 29-38页

作者： Abdou Karim Farota Harouna Moussa Sanghotte salick diagne Babacar Niang Bouya Diop Laboratoire des Sciences de l’Atmosphère et de l’Océan—Matériaux Energie et Dispositifs Université Gaston Berger de Saint-Louis Saint-Louis Senegal

In this paper, we study the coexistence of two key technologies in the same fifth-generation network, namely D2D (Device-to-Device) communication and MEC (Multi-Access Edge Computing) technology. These two promising technologies each have important roles to play in future telecommunications networks. D2D communication is a technology that aims to improve communication efficiency, increase overall throughput, and decrease latency. Multi-Access Edge Computing, a promising new concept, overcomes the burden of core cloud servers. This makes it possible to provide large storage, compute, and resource capacities to mobile edge nodes. With its closest deployment to users, it significantly reduces end-to-end transmission time. Our architecture consists of an access network and a central network, a base station (gNodeB), users, an MEC server and a gateway (UPF) to connect it to the RAN (Radio Access Network) of the core network. The base station controls communication by managing signaling and interference. The MEC server is placed next to the BS to provide data to the devices. It plays the role of the cloud that is located in the core network and allows you to store data and then do calculations for good communication between devices. Finally, we did a simulation using the OMNeT software. The results showed us that the data transmission passed well between the end devices, the antennas and the MEC server with very low latency and reliability.

关键词： D2D MEC Edge Computing Basic Station OMNeT