Impacto del tiempo de backoff en el rendimiento de IoT celular en entornos de comunicación masiva
DOI:
https://doi.org/10.37135/ns.01.09.02Palabras clave:
tiempo de backoff, redes IoT celular, comunicaciones tipo máquina, métricas de rendimiento, canal de acceso aleatorioResumen
Este artículo evalúa el impacto del tiempo de backoff a través de la configuración del Indicador de Backoff (BI) en el canal de acceso aleatorio (RACH) bajo diferentes escenarios de tráfico masivo considerando métricas de rendimiento de la red como la probabilidad de acceso satisfactorio, el retardo en el acceso y el número promedio de transmisiones de preámbulo. Se desarrolló un modelo de simulación por eventos discretos del procedimiento de acceso aleatorio basado en contención empleando el software MATLAB. Con base a los resultados obtenidos, se caracterizó un rango óptimo de los valores de BI para cada escenario a través de diferentes condiciones de fiabilidad. Se observó que con una configuración adecuada de los parámetros del RACH, el rendimiento de la red sistema puede alcanzar una probabilidad de acceso satisfactorio mayor al 85% con un aumento moderado en el retardo de acceso. Se concluyó que la modificación dinámica del tiempo de backoff puede aliviar la congestión del canal en aplicaciones tolerantes a retardos con tráfico masivo.
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