Influencia de los mecanismos PSM en la QoE para usuarios de servicios telefónicos en redes LTE/LTE-A
Fecha
2018
Autores
Ruiz Guirola, David Ernesto
Pineda Sánchez, Lesbiel
Rodríguez López, Carlos Alberto
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Resumen
El aumento de la gama de servicios de banda ancha a los usuarios móviles ha producido un lógico incremento del consumo de energía por parte de los dispositivos móviles, afectando la autonomía de las baterías y por tanto la disponibilidad de los terminales. Una solución efectiva para el ahorro de energía es implementar un modo de ahorro de potencia (Power Saving Mode, PSM). No obstante, el verdadero reto es lograr sustentar un deseado nivel de calidad de la experiencia (QoE, Quality of Experience) en servicios de voz sobre IP (VoIP) mientras, simultáneamente, se consigue ahorrar energía. En este proyecto se realiza un análisis del rendimiento de dos esquemas PSM, uno que utiliza un mecanismo con dos ciclos y otro que utiliza un mecanismo multiciclo. Basado en este análisis, se propone un mecanismo PSM que asegura una mejora en cuanto al ahorro de energía y al mismo tiempo mantiene los niveles de QoE en un rango permisible, además de tener en cuenta el efecto de las pérdidas en ráfagas para la percepción de la calidad. Se modela un canal de comunicación para validar la efectividad del mecanismo propuesto y los resultados obtenidos certifican la eficacia de este, permitiendo un ahorro de hasta el 50% en comparación con los demás esquemas mientras asegura un requerido nivel de QoE.
The increase in the range of broadband services to mobile users has led to a logical increase in the consumption of energy by mobile devices, affecting the autonomy of the batteries and therefore the availability of the terminals. An effective solution for saving energy is to implement a power saving mode (Power Saving Mode, PSM). However, the real challenge is to sustain a satisfactory level of quality of experience (QoE, Quality of Experience) in voice over IP (VoIP) services while simultaneously saving energy. This project carries out an analysis of the performance of two PSM schemes: one that uses a mechanism with a mixture of short and long cycles, and another that uses a multi-cycle mechanism. Based on the analysis, this paper proposes a PSM mechanism that ensures an improvement in energy savings while maintaining the QoE levels in a permissible range, as well as taking into account the effect of burst losses for the perception of the quality. A communication channel is modeled to validate the effectiveness of the proposed mechanism and the results obtained certify the effectiveness of this, allowing savings of up to 50% compared to the other schemes while ensuring a desired level of QoE.
The increase in the range of broadband services to mobile users has led to a logical increase in the consumption of energy by mobile devices, affecting the autonomy of the batteries and therefore the availability of the terminals. An effective solution for saving energy is to implement a power saving mode (Power Saving Mode, PSM). However, the real challenge is to sustain a satisfactory level of quality of experience (QoE, Quality of Experience) in voice over IP (VoIP) services while simultaneously saving energy. This project carries out an analysis of the performance of two PSM schemes: one that uses a mechanism with a mixture of short and long cycles, and another that uses a multi-cycle mechanism. Based on the analysis, this paper proposes a PSM mechanism that ensures an improvement in energy savings while maintaining the QoE levels in a permissible range, as well as taking into account the effect of burst losses for the perception of the quality. A communication channel is modeled to validate the effectiveness of the proposed mechanism and the results obtained certify the effectiveness of this, allowing savings of up to 50% compared to the other schemes while ensuring a desired level of QoE.
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Palabras clave
PSM, QoE, VoLTE
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