MLB Improvement over LTE Networks

El objetivo del balanceo de carga móvil sobre redes LTE es administrar los recursos de radio entre celdas adyacentes de una forma eficiente con el fin de evitar degradación de servicio cuando las celdas del sistema presentan congestión. La presente investigación muestra una propuesta para realizar balanceo de carga entre celdas no adyacentes con el fin de administrar de mejor forma la carga dentro de la red. Este método será referenciado dentro del documento como balanceo de carga de segundo orden. Los resultados muestran que el balanceo de carga de segundo orden aumenta el throughput promedio en un 4% y reduce la tasa de pérdida de paquetes hasta en un 12% con respecto al algoritmo de balan-ceo de carga tradicional. La simulación realizada en la presente investigación incluye escenarios para diferentes valores de tasa de llegada de paquetes, tasa de procesamiento de paquetes y longitud de la cola tanto para el tráfico de voz como el tráfico de datos. El modelo puesto en esta investigación tiene mejor rendimiento que el modelo de balanceo tradicional en términos de tasa de pérdida de paquetes y throughput bajo los escenarios de simulación propuestos.The objective of Mobility Load Balancing over LTE networks is to manage the Radio resources be-tween adjacent cells in an efficient way to avoid the degradation of user service in scenarios where the cells are congested. This paper shows a proposal where a non-adjacent cell of a congested cell can reduce its load; in this research, will reference the procedure as Balancing by second-order. The results show that Balancing by second-order increases the overall throughput in the network by 4% and reduces the loss rate by 12% roughly compared with a traditional Mobility Load Balancing feature. The simulation includes several scenarios where the arrival rate, service rate, and length of the buffer are varied for voice traffic and low priority traffic. The model proposed in this research has a better performance than traditional load balancing algorithms in terms of loss packet rate and throughput

Joint Bandwidth Allocation and Small Cell Switching in Heterogeneous Networks

Abstract-One major topic of research into self-organizing network technology is the coordination of SON use cases. Network operators expect a coordinated handling of the parameter and configuration changes submitted to the operating network by closed-loop SON use case implementations. There are currently two basic approaches for SON use case coordination discussed in the literature: A so-called heading or tailing use case external coordination and the combination of separate use cases into one joint algorithm. In this paper, we extend a verified framework to combine mobility load balancing and inter-cell interference coordination use cases, especially for a heterogeneous network environment. Our approach results in a coordinated set of cell range expansion offsets, an efficient bandwidth allocation to support the (enhanced) inter-cell interference coordination use case, and an energy-efficient smart cell switching of the small capacity cells in a heterogeneous networks environment for a varying traffic demand during the course of a day, resulting in significant capacity enhancements while saving energy at the same time