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Bibliografias temáticas / LP-WAN

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Literatura científica selecionada sobre o tema "LP-WAN"

Autor: Grafiati

Publicado: 15 de fevereiro de 2025

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Artigos de revistas sobre o assunto "LP-WAN"

1

Strzoda, Anna. "Zastosowanie Heurystyki do Wyboru Lokalizacji Węzłów Pośredniczących w Sieciach LP WAN". PRZEGLĄD TELEKOMUNIKACYJNY - WIADOMOŚCI TELEKOMUNIKACYJNE 1, n.º 4 (21 de agosto de 2023): 351–54. http://dx.doi.org/10.15199/59.2023.4.79.

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Sanchez-Iborra, Ramon, e Maria-Dolores Cano. "State of the Art in LP-WAN Solutions for Industrial IoT Services". Sensors 16, n.º 5 (17 de maio de 2016): 708. http://dx.doi.org/10.3390/s16050708.

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Sanchez-Iborra, Ramon, Jesus Sanchez-Gomez e Antonio Skarmeta. "Evolving IoT networks by the confluence of MEC and LP-WAN paradigms". Future Generation Computer Systems 88 (novembro de 2018): 199–208. http://dx.doi.org/10.1016/j.future.2018.05.057.

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Trinh, Le Huy, Nguyen Vu Truong e Fabien Ferrero. "Low Cost Circularly Polarized Antenna for IoT Space Applications". Electronics 9, n.º 10 (24 de setembro de 2020): 1564. http://dx.doi.org/10.3390/electronics9101564.

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This work presents the use of a three-element radiating structure for circularly polarized Low-Power Wide Area Network (LP-WAN) communication with space. The proposed structure has a 72 mm × 72 mm × 12 mm compact size with Right-Handed Circular Polarization (RHCP) and a 120∘ wide beamwidth radiation pattern. Printed on low-cost FR4 Epoxy substrate, a feeding network circuit based on Quasi Lumped Quadrature Coupler (QLQC), it achieves a −0.6 dB insertion loss and a very compact size. The final structure has a 69% total efficiency and a 3.14 dBic realized gain.

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Cheimaras, Vasileios, Nikolaos Peladarinos, Nikolaos Monios, Spyridon Daousis, Spyridon Papagiakoumos, Panagiotis Papageorgas e Dimitrios Piromalis. "Emergency Communication System Based on Wireless LPWAN and SD-WAN Technologies: A Hybrid Approach". Signals 4, n.º 2 (30 de abril de 2023): 315–36. http://dx.doi.org/10.3390/signals4020017.

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Emergency Communication Systems (ECS) are network-based systems that may enable people to exchange information during crises and physical disasters when basic communication options have collapsed. They may be used to restore communication in off-grid areas or even when normal telecommunication networks have failed. These systems may use technologies such as Low-Power Wide-Area(LPWAN) and Software-Defined Wide Area Networks (SD-WAN), which can be specialized as software applications and Internet of Things (IoT) platforms. In this article, we present a comprehensive discussion of the existing ECS use cases and current research directions regarding the use of unconventional and hybrid methods for establishing communication between a specific site and the outside world. The ECS system proposed and simulated in this article consists of an autonomous wireless 4G/LTE base station and a LoRa network utilizing a hybrid IoT communication platform combining LPWAN and SD-WAN technologies. The LoRa-based wireless network was simulated using Network Simulator 3 (NS3), referring basically to firm and sufficient data transfer between an appropriate gateway and LP-WAN sensor nodes to provide trustworthy communications. The proposed scheme provided efficient data transfer posing low data losses by optimizing the installation of the gateway within the premises, while the SD-WAN scheme that was simulated using the MATLAB simulator and LTE Toolbox in conjunction with an ADALM PLUTO SDR device proved to be an outstanding alternative communication solution as well. Its performance was measured after recombining all received data blocks, leading to a beneficial proposal to researchers and practitioners regarding the benefits of using an on-premises IoT communication platform.

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Sanchez-Iborra, Ramon, Ignacio G. Liaño, Christian Simoes, Elena Couñago e Antonio Skarmeta. "Tracking and Monitoring System Based on LoRa Technology for Lightweight Boats". Electronics 8, n.º 1 (22 de dezembro de 2018): 15. http://dx.doi.org/10.3390/electronics8010015.

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Maritime communications are really challenging due to the adverse transmission conditions and the lack of a pre-provided infrastructure for supporting long range connectivity with land. Communications in high seas are usually covered by satellite links that are expensive and lead to high power consumption by the terminals. However, in areas closer to the shore, other communication options have been adopted for different kinds of services such as boat tracking and telemetry, data collection from moored monitoring systems, etc. In these scenarios, technologies such as cellular communications or wireless sensor networks have been employed so far; nevertheless, all of them present different drawbacks mostly related with the coverage and energy-efficiency of the system. Recently, a novel communication paradigm, so-called Low Power-Wide Area Network (LP-WAN) has gained momentum due to its interesting characteristics regarding transmission distances and end-node’s power consumption. The latter may be of great interest for ships with energetic restrictions such as small sailboats, recreational boats, or radio control ships. For that reason, in this work, we present a boat tracking and monitoring system based on LoRa (Long Range), one of the most prominent LP-WAN technologies. We provide a comprehensive overview of this communication solution as well as a discussion addressing its benefits when applied to maritime scenarios. We present the results extracted from a case of study, where real-training sessions of Optimist Class sailboats have been monitored by means of the presented architecture, obtaining good levels of coverage and link-reliability with limited power consumption. A transmission range study is also presented, demonstrating the validity of this proposal for monitoring activities inside the port or maneuvers close to the shore.

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Darst, Burcu F., Ed Saunders, Tokhir Dadaev, Xin Sheng, Peggy Wan, Loreall Pooler, Lucy Y. Xia et al. "Abstract 688: Multi-stage exome sequencing study of 17,546 aggressive and non-aggressive prostate cancer cases". Cancer Research 82, n.º 12_Supplement (15 de junho de 2022): 688. http://dx.doi.org/10.1158/1538-7445.am2022-688.

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Abstract Rare pathogenic variants in DNA repair genes have been found to influence risk of aggressive prostate cancer. We conducted a large case-only exome sequencing study to further understand the role of rare coding variation in aggressive prostate cancer in a study of 9,185 aggressive (prostate cancer death, metastatic disease, T4, or both T3 and Gleason≥8) and 8,361 non-aggressive cases (T1/T2 and Gleason≤6) of European ancestry from 19 international studies. Stage 1 samples (N=5,545) had whole exome-sequencing, and stage 2 samples (N=12,001) had targeted exome sequencing for 1,459 genes selected based on stage 1 results and previous evidence. Logistic regression models were used to evaluate gene-based tests and the aggregate effect of multiple genes to investigate whether carrying pathogenic/likely pathogenic/deleterious (P/LP/D) variants (18,759 identified) was associated with risk of aggressive prostate cancer, prostate cancer death (N=6,033), or metastatic disease (N=1,730) compared to non-aggressive disease. Gene-based tests were meta-analyzed across stages 1 and 2. BRCA2, ATM, and NBN had the most statistically significant gene-based results: BRCA2 P/LP/D variant carriers had 4.3-fold higher odds of aggressive disease (95% CI=3.15-5.86, P=4x10-20), 4.7-fold higher odds of prostate cancer death (95% CI=3.41-6.59, P=2x10-20), and 5.7-fold higher odds of metastatic disease (95% CI=3.71-8.76, P=2x10-15); ATM P/LP/D variant carriers had 2.2-fold higher odds of aggressive disease (95% CI=1.58-2.99, P=2x10-6), 2.2-fold higher odds of prostate cancer death (95% CI=1.52-3.05, P=2x10-5), and 3.0-fold higher odds of metastatic disease (95% CI=1.93-4.61, P=9x10-7); and NBN P/LP/D variant carriers had 5.9-fold higher odds of metastatic disease (95% CI=2.56-13.84, P=3x10-5). Among potentially novel genes with strong but not exome-wide significant statistical evidence were MMP19, involved in reproduction and metastasis, with carriers having 2.8-fold higher odds of prostate cancer death (95% CI=1.53-5.05, P=8x10-4); PKD2L2, involved in fertility, with carriers having 3.5-fold higher odds of prostate cancer death (95% CI=1.76-7.04, P=5x10-4); and SMPD1, involved in converting sphingomyelin to ceramide, with carriers having 5.3-fold higher odds of metastatic disease (95% CI=1.85-14.98, P=0.002). At least one P/LP/D variant within a subset of 24 previously curated candidate prostate cancer DNA repair genes was carried by 12.8% of aggressive cases (OR=1.48, 95% CI=1.34-1.64, P=3x10-14), 12.6% of cases who died due to prostate cancer (OR=1.47, 95% CI=1.31-1.65, P=3x10-11), and 15.1% of metastatic cases (OR=2.16, 95% CI=1.57-2.16, P=5x10-14) compared to 9.4% of non-aggressive cases. These findings support the importance of rare genetic variation in aggressive prostate cancer risk and may have important implications for prostate cancer risk stratification and screening. Citation Format: Burcu F. Darst, Ed Saunders, Tokhir Dadaev, Xin Sheng, Peggy Wan, Loreall Pooler, Lucy Y. Xia, Stephen Chanock, Sonja I. Berndt, Susan M. Gapstur, Victoria Stevens, Demetrius Albanes, Stephanie J. Weinstein, Vincent Gnanapragasam, Graham G. Giles, Tu Nguyen-Dumont, Roger L. Milne, Mark M. Pomerantz, Julie A. Schmidt, Ruth C. Travis, Timothy J. Key, Konrad H. Stopsack, Lorelei A. Mucci, William J. Catalona, Beth Marosy, Kurt N. Hetrick, Kimberly F. Doheny, Robert J. MacInnis, Melissa C. Southey, Rosalind A. Eeles, Fredrik Wiklund, Zsofia Kote-Jarai, David V. Conti, Christopher A. Haiman. Multi-stage exome sequencing study of 17,546 aggressive and non-aggressive prostate cancer cases [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2022; 2022 Apr 8-13. Philadelphia (PA): AACR; Cancer Res 2022;82(12_Suppl):Abstract nr 688.

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Rzym, Grzegorz, Krzysztof Wajda e Piotr Chołda. "SDN-Based WAN Optimization: PCE Implementation in Multi-Domain MPLS Networks Supported By BGP-LS". Image Processing & Communications 22, n.º 1 (1 de março de 2017): 35–48. http://dx.doi.org/10.1515/ipc-2017-0004.

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Abstract In order to provide efficient and flexible resource management and path set-up in high-speed MPLS/GMPLS networks, the PCE (Path Computation Element) architecture was proposed by IETF. Implementation of a central module for the path set-up enables network operators to run path establishment operations for applications with explicitly defined objective functions and QoS requirements. The paper reports on recent research and experimental investigations with PCE-based path computation performed according to the 3- layered traffic engineering (TE) system consisting of: (1) a PCE module equipped with the IBM Cplex LP solver used in the highest layer 3, and (2) a SDN controller in the intermediate layer 2 responsible for transferring path setup requests towards virtual routers in the lowest layer 1. The presented results show usefulness of the PCE-supporting architecture with an SDN controller and applicability of bandwidth-oriented optimization based on real-time focused constraints (path delay limits). We emphasise that even a simple optimization approach shows the power provided by the SDN, i.e., flexibility of flows. This property is in practice not feasible in classical IP or MPLS networks, that is the usage of flow-based routing provided by network programmability really opens opportunities in network tuning

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Grochla, Krzysztof, Anna Strzoda, Rafał Marjasz, Przemysław Głomb, Kamil Książek e Zbigniew Łaskarzewski. "Energy-Aware Algorithm for Assignment of Relays in LP WAN". ACM Transactions on Sensor Networks, 17 de junho de 2022. http://dx.doi.org/10.1145/3544561.

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The Low Power Wide Area Networks allow maintaining connectivity with devices over a distance of a few kilometres. However, due to the presence of obstacles the communication range in an urban environment may be shorter, which creates multiple blind spots or areas with limited coverage. The nodes acting as relays may solve this problem by forwarding the data from other devices with poor connectivity. We propose and investigate a novel algorithm that assigns devices to the relay role while keeping the battery constraints. We define the algorithm, describe the simulation testbed, and present performance evaluation in several scenarios, including real-life topologies of IoT networks. The proposed relay selection scheme allows increasing the lifetime of the network by selecting the relay taking into account the current battery capacity. Additionally, it outperforms a previously proposed relay selection algorithm for LP WAN, showing an average 4% decrease in transmission time and an order of magnitude lower computation complexity.

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10

Shadwal, Ribhu, e Trilok Singh Randhawa. "A Road Map : Analysis of Internet of Things (IoT) to Smart Telecommunication Industries". International Journal of Scientific Research in Science and Technology, 1 de janeiro de 2019, 386–92. http://dx.doi.org/10.32628/ijsrst18401111.

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In this research paper the researcher focused on a road map in between analysis of internet of things to smart telecommunication industries. The telecommunication industry would be spending more resources in delivering data network as per the data demand for different use cases. While faster data network would be required for connecting cars and other things, a low bandwidth network would work just fine in the use case of smart metering. Low-power WAN networks aka LP-WAN such as Sigfox or LoRa are being rolled out by some of the leading mobile operators to ensure smooth working of the smart devices and applications that require low power consumption and can work perfectly in low bandwidth. The researcher analysed a real case study on Communication service providers (CSPs) would be adopting a more data-centric approach that would enable the smart devices to stay connected with the internet for without any interruption. Moreover, the service providers would also monetize their data and boost profitability by providing data services that would provide full support for the upcoming new devices. The telecom companies would have to invest more resources into providing the highest quality of network in terms of data consumption. A consistent service across different devices would be the key to success in the connected world.

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Teses / dissertações sobre o assunto "LP-WAN"

1

Tran, Van Lic. "Développement de techniques radio cognitives pour les communications LP-WAN terrestres et satellites". Electronic Thesis or Diss., Université Côte d'Azur, 2024. http://www.theses.fr/2024COAZ4048.

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Cette recherche se concentre sur l'amélioration des communications des réseaux à large bande basse consommation (LP-WAN) en utilisant des technologies de radio cognitive. Plus précisément, elle aborde le défi de la localisation du réseau en utilisant l'indicateur de force du signal reçu (RSSI) des réseaux LoRa, ainsi que l'algorithme ML-MTL proposé, pour améliorer la précision de l'estimation de la position des dispositifs finaux. De plus, cette étude explore l'estimation et l'extension de la couverture LoRaWAN. En ce qui concerne l'estimation de la couverture, elle démontre que la collecte de plusieurs points de données autour de chaque passerelle permet de créer des cartes thermiques de couverture précises grâce à un algorithme d'estimation de la couverture LoRaWAN proposé. Cette approche permet de localiser efficacement les zones où des passerelles supplémentaires sont nécessaires pour améliorer la fiabilité du réseau. Pour l'extension de la couverture, l'étude se concentre sur l'optimisation de la couverture terrestre des LP-WAN par le biais de stratégies basées sur des relais. En intégrant des techniques de radio cognitive, la recherche vise à étendre la zone de couverture des réseaux LoRa, améliorant à la fois la portée et la fiabilité des services de communication. En termes de communication par satellite, le projet utilise Omnet++ pour simuler la performance et la latence des réseaux LoRa dans un environnement satellite. La simulation évalue la faisabilité de l'utilisation des réseaux LoRa dans les communications par satellite, mettant en évidence son potentiel pour étendre les capacités des LP-WAN aux régions éloignées ou difficiles d'accès par le biais de liaisons satellites. En abordant à la fois les domaines terrestre et satellite, cette recherche adopte une approche globale pour faire progresser les communications LP-WAN. L'intégration des techniques de radio cognitive contribue au développement de systèmes de communication intelligents et adaptatifs qui améliorent l'efficacité, la fiabilité et la couverture dans les environnements LP-WAN terrestres et par satellite
This research focuses on improving Low-Power Wide-Area Network (LP-WAN) communications using cognitive radio technologies. Specifically, it addresses the challenge of network localization by utilizing the Received Signal Strength Indicator (RSSI) from LoRa networks, along with the proposed ML-MTL algorithm, to improve the accuracy of end device position estimation. Additionally, this study explores LoRaWAN coverage estimation and extension. In coverage estimation, it demonstrates that gathering multiple data points around each gateway enables the creation of accurate coverage heat maps using a proposed LoRaWAN coverage estimation algorithm. This approach effectively pinpoints areas where additional gateways are needed to improve network reliability. For coverage extension, the study focuses on optimizing terrestrial LP-WAN coverage through relay-based strategies. By incorporating cognitive radio techniques, the research aims to expand the coverage area of LoRa networks, enhancing both the reach and reliability of communication services. In terms of satellite communication, the project employs Omnet++ to simulate the performance and latency of LoRa networks in a satellite environment. The simulation assesses the feasibility of using LoRa networks in satellite communications, highlighting its potential for extending LP-WAN capabilities to remote or hard-to-reach regions through satellite links. By addressing both terrestrial and satellite domains, this research adopts a comprehensive approach to advancing LP-WAN communications. The integration of cognitive radio techniques contributes to the development of intelligent, adaptive communication systems that enhance efficiency, reliability, and coverage across terrestrial and satellite LP-WAN environments

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Capítulos de livros sobre o assunto "LP-WAN"

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Frankiewicz, Artur, Adam Glos, Krzysztof Grochla, Zbigniew Łaskarzewski, Jarosław Miszczak, Konrad Połys, Przemysław Sadowski e Anna Strzoda. "LP WAN Gateway Location Selection Using Modified K-Dominating Set Algorithm". In Modelling, Analysis, and Simulation of Computer and Telecommunication Systems, 209–23. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-68110-4_14.

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Manh, Thao Nguyen, Lic Tran Van, Thanh Ngo Dinh, Thu Nguyen Thi Anh, Huy Le Quoc, Huy Trinh Le, Fabien Ferrero e Nhan Le Than. "Enabling the Smart City Through Agile LP-WAN Network in Da Nang City". In Intelligent Systems and Networks, 623–29. Singapore: Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-19-3394-3_72.

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Trabalhos de conferências sobre o assunto "LP-WAN"

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Tengshe, Richa, e Eisha Akanksha. "Security in LP-WAN Technologies: Challenges and Solutions". In 2023 IEEE 8th International Conference for Convergence in Technology (I2CT). IEEE, 2023. http://dx.doi.org/10.1109/i2ct57861.2023.10126493.

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ElSabaa, AlaaAllah, Florimond Gueniat, Wenyan Wu e Michael Ward. "Enhanced Data-Driven LoRa LP-WAN Channel Model in Birmingham". In 2022 IEEE World AI IoT Congress (AIIoT). IEEE, 2022. http://dx.doi.org/10.1109/aiiot54504.2022.9817253.

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Tombakdjian, Lionel, Fabien Ferrero e Le Huy Trinh. "Effect of Circular Polarization in a UHF LP-WAN communication". In 2021 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting (APS/URSI). IEEE, 2021. http://dx.doi.org/10.1109/aps/ursi47566.2021.9703963.

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Balanuta, Artur, António Grilo, Bob Iannucci e Anthony Rowe. "Improving LP-WAN performance in Dense Environments with Practical Directional Clients". In 2023 20th Annual IEEE International Conference on Sensing, Communication, and Networking (SECON). IEEE, 2023. http://dx.doi.org/10.1109/secon58729.2023.10287477.

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Ferrero, Fabien, Le Ouoc Huy e Matthieu Loupias. "Impact of Terminal Polarization in a Urban Channel for LP-WAN Application". In 2019 IEEE Conference on Antenna Measurements & Applications (CAMA). IEEE, 2019. http://dx.doi.org/10.1109/cama47423.2019.8959670.

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Anoh, Kelvin, Dragana Bajovic, Augustine Ikpehai, Bamidele Adebisi e Dejan Vukobratovic. "Enabling Peer to Peer Energy Trading in Virtual Microgrids with LP-WAN". In IEEE EUROCON 2019 -18th International Conference on Smart Technologies. IEEE, 2019. http://dx.doi.org/10.1109/eurocon.2019.8861594.

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Mermer, Gultekin Berahan, e Engin Zeydan. "A comparison of LP-WAN technologies: An overview from a mobile operators' perspective". In 2017 25th Signal Processing and Communications Applications Conference (SIU). IEEE, 2017. http://dx.doi.org/10.1109/siu.2017.7960581.

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Coppolino, Luigi, Salvatore D'Antonio, Giovanni Mazzeo, Luigi Romano, Irene Bonetti e Elena Spagnuolo. "The protection of LP-WAN Endpoints via TEE: a Chemical Storage Case Study". In 2021 IEEE International Symposium on Software Reliability Engineering Workshops (ISSREW). IEEE, 2021. http://dx.doi.org/10.1109/issrew53611.2021.00100.

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Huy, Le Quoc, Nguyen Thi Anh Thu, Tran Van Lic, Basile Tschora, Fabien Ferrero, Nhan Le Thanh e Trinh Le Huy. "Estimation of LP-WAN Coverage using Sparse Measurement and Machine Learning in DaNang City". In 2022 IEEE Conference on Antenna Measurements and Applications (CAMA). IEEE, 2022. http://dx.doi.org/10.1109/cama56352.2022.10002586.

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