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Adaptive nodes algorithm to solve the orphan nodes problem in a ZigBee Tree WSN

Escobar Amado, Christian David; Celis, Jose Miguel; Sepúlveda, Sergio; Castro Casadiego, Sergio ; Medina Delgado, Byron; Guevara, Dinael (IngeniareChile, 2021-06)

We have developed an algorithm based on hybrid nodes composed of an XBee S2C module configured in API mode with escape and connected to a microcontroller ATMEGA 328P to solve the orphan node problem of a ZigBee tree ...
Analysis of heuristic uniform theory of diffraction coefficients for electromagnetic scattering prediction

Tami, Diego; Navarro, Andres; G. Rego, Cássio; Guevara, Dinael; S. Moreira, Fernando J.; Giménez, Jordi; G. Triana, Hernan (International Journal of Antennas and PropagationReino Unido, 2018-03-07)

We discuss three sets of heuristic coefficients used in uniform theory of diffraction (UTD) to characterize the electromagnetic scattering in realistic urban scenarios and canonical examples of diffraction by lossy conducting ...
Delay spread estimation using a game engine ray based model in indoor scenario at 5 GHz

Navarro, Andrés; Guevara, Dinael; Escalante, Diego; Vargas, José; Gómez, Jorge; Cardona, Narcis; Gimenez, Jordi (ARPN Journal of Engineering and Applied SciencesInglaterra, 2016-03)

In this paper we show the results of a simulation of channel parameters using a Game Engine Ray based tool, developed by our group, which has been evolving during last few years. We show simulation results and compare it ...

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Adaptive nodes algorithm to solve the orphan nodes problem in a ZigBee Tree WSN
...
Escobar Amado, Christian David | 2021-06

We have developed an algorithm based on hybrid nodes composed of an XBee S2C module configured in API mode with escape and connected to a microcontroller ATMEGA 328P to solve the orphan node problem of a ZigBee tree topology. The sensor nodes have both features End Device and Router that may alternate depending on the situation, and the node can adapt itself to keep the network integrality as much as possible. On the other hand, the coordinator node comprises an XBee S2C module and the embedded system Raspberry Pi 3, which hosts the algorithm and is set up as an access point, a database server, and a web server. Using the proposed algorithm, we were able to recover up to 42.8% of the network coverage, but it comes with an energy cost due to the switch from End Device to Router. Additionally, a mobile application integrated with notification service and Google Maps was developed to monitor every node’s behavior in the Wireless Sensor Network.

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$Portada Analysis of heuristic uniform theory of diffraction coefficients for electromagnetic scattering prediction$

Analysis of heuristic uniform theory of diffraction coefficients for electromagnetic scattering prediction
...
Tami, Diego | 2018-03-07

We discuss three sets of heuristic coefficients used in uniform theory of diffraction (UTD) to characterize the electromagnetic scattering in realistic urban scenarios and canonical examples of diffraction by lossy conducting wedges using the three sets of heuristic coefficients and the Malyuzhinets solution as reference model. We compare not only the results of the canonical models but also their implementation in real outdoor scenarios. To predict the coverage of mobile networks, we used propagation models for outdoor environments by using a 3D ray-tracing model based on a brute-force algorithm for ray launching and a propagation model based on image theory. To evaluate each set of coefficients, we analyzed the mean and standard deviation of the absolute error between estimates and measured data in Ottawa, Canada; Valencia, Spain; and Cali, Colombia. Finally, we discuss the path loss prediction for each set of heuristic UTD coefficients in outdoor environment, as well as the comparison with the canonical results.

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Delay spread estimation using a game engine ray based model in indoor scenario at 5 GHz
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Navarro, Andrés | 2016-03

In this paper we show the results of a simulation of channel parameters using a Game Engine Ray based tool, developed by our group, which has been evolving during last few years. We show simulation results and compare it with a set of measurements for an indoor scenario, in the band of 5.4 GHz. We found a good match between the rays based tool and measurements for Delay Spread. Also, we show the use of an Open Source 3D modelling tool for the scenario building, showing the flexibility of the XML description language for this kind of scenarios.

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Listar por autor "Guevara, Dinael"

Adaptive nodes algorithm to solve the orphan nodes problem in a ZigBee Tree WSN

Analysis of heuristic uniform theory of diffraction coefficients for electromagnetic scattering prediction

Delay spread estimation using a game engine ray based model in indoor scenario at 5 GHz

Envíos recientes

Adaptive nodes algorithm to solve the orphan nodes problem in a ZigBee Tree WSN

Analysis of heuristic uniform theory of diffraction coefficients for electromagnetic scattering prediction

Delay spread estimation using a game engine ray based model in indoor scenario at 5 GHz

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Listar por autor "Guevara, Dinael"

Adaptive nodes algorithm to solve the orphan nodes problem in a ZigBee Tree WSN ﻿

Analysis of heuristic uniform theory of diffraction coefficients for electromagnetic scattering prediction ﻿

Delay spread estimation using a game engine ray based model in indoor scenario at 5 GHz ﻿

Envíos recientes

Adaptive nodes algorithm to solve the orphan nodes problem in a ZigBee Tree WSN

Analysis of heuristic uniform theory of diffraction coefficients for electromagnetic scattering prediction

Delay spread estimation using a game engine ray based model in indoor scenario at 5 GHz

Portales Institucionales

Adaptive nodes algorithm to solve the orphan nodes problem in a ZigBee Tree WSN

Analysis of heuristic uniform theory of diffraction coefficients for electromagnetic scattering prediction

Delay spread estimation using a game engine ray based model in indoor scenario at 5 GHz