Content-Specific Broadcast Cellular Networks based on User Demand Prediction: A Revenue Perspective

The Long Term Evolution (LTE) broadcast is a promising solution to cope with exponentially increasing user traffic by broadcasting common user requests over the same frequency channels. In this paper, we propose a novel network framework provisioning broadcast and unicast services simultaneously. For each serving file to users, a cellular base station determines either to broadcast or unicast the file based on user demand prediction examining the file's content specific characteristics such as: file size, delay tolerance, price sensitivity. In a network operator's revenue maximization perspective while not inflicting any user payoff degradation, we jointly optimize resource allocation, pricing, and file scheduling. In accordance with the state of the art LTE specifications, the proposed network demonstrates up to 32% increase in revenue for a single cell and more than a 7-fold increase for a 7 cell coordinated LTE broadcast network, compared to the conventional unicast cellular networks.Comment: 6 pages; This paper will appear in the Proc. of IEEE WCNC 201

Real-Time Scheduling for Content Broadcasting in LTE

Broadcasting capabilities are one of the most promising features of upcoming LTE-Advanced networks. However, the task of scheduling broadcasting sessions is far from trivial, since it affects the available resources of several contiguous cells as well as the amount of resources that can be devoted to unicast traffic. In this paper, we present a compact, convenient model for broadcasting in LTE, as well as a set of efficient algorithms to define broadcasting areas and to actually perform content scheduling. We study the performance of our algorithms in a realistic scenario, deriving interesting insights on the possible trade-offs between effectiveness and computational efficienc

Marco de referencia técnico para el despliegue del servicio de IPTV sobre redes móviles LTE (Long Term Evolution) con calidad de servicio (QoS)

El despliegue de servicio de IPTV requiere que se provean los recursos de red y los mecanismos necesarios para garantizar la calidad en los contenidos entregados a los usuarios. Las características técnicas de las tecnologías LTE/LTE-A las perfilan como las redes móviles idóneas para el despliegue del servicio de IPTV puesto que son arquitecturas de red completamente IP (All-IP), con la capacidad de proporcionar altas velocidades de acceso, mejorar la eficiencia, reducir el retardo y proporcionar la QoS de extremo a extremo demandada por el servicio de IPTV. Por lo anterior el propósito de esta tesis se centró en generar un marco de referencia técnico que oriente el despliegue del servicio de IPTV en redes móviles LTE con calidad del servicio. Para ello, en este trabajo se identifican los principales parámetros de desempeño a nivel de red que deben ser garantizados por las redes LTE para la entrega de los servicios de IPTV con calidad de servicio; además se propone una arquitectura funcional para la implementación del servicio de IPTV sobre redes LTE/LTE-A y se analizan las alternativas de funcionamiento de QoS que ofrecen este tipo de tecnologías para la entrega de servicios de IPTV. También se realiza la simulación del tráfico generado por el servicio de IPTV en un modelo de red LTE para la evaluación de los parámetros de desempeño (throughput, retardo y pérdida de paquetes) en diferentes escenarios. Y finalmente se presentan los lineamientos técnicos para el despliegue del servicio de IPTV sobre redes LTE, los cuales fueron identificados a partir de los resultados obtenidos de las simulaciones y el análisis de las alternativas de funcionamiento de la red LTE para ofrecer servicio de IPTV con QoS.Abstract. The IPTV service deployment requires that network provide resources and mechanisms to ensure the quality of content delivered to users. The technical characteristics of the technologies LTE/LTE-A make them ideal for IPTV service deployment because they are All-IP network architectures, have the ability to provide high speed access, improve efficiency, reduce latency and provide end-to-end QoS demanded by the IPTV service. Therefore the purpose of this thesis is focused on generating a technical framework to guide the deployment of IPTV service in LTE networks with quality of service. For this propose, in this work we identify key performance parameters at the network level must be guaranteed by LTE networks for the delivery of IPTV services with QoS. Then we propose a functional architecture for service implementation IPTV over mobile networks LTE/LTE-A and analyze the QoS performance alternatives that offer this type of technology for the delivery of IPTV services. Also, we performed the simulation of the traffic generated by the IPTV service on a LTE network model for evaluating performance parameters (throughput, delay and packet loss) in different scenarios. And finally we present technical guidelines for the deployment of IPTV service over LTE networks, which were identified from the results of the simulations and analysis alternatives LTE network performance to provide IPTV service with QoS.Maestrí

Potentzia domeinuko NOMA 5G sareetarako eta haratago

Tesis inglés 268 p. -- Tesis euskera 274 p.During the last decade, the amount of data carried over wireless networks has grown exponentially. Several reasons have led to this situation, but the most influential ones are the massive deployment of devices connected to the network and the constant evolution in the services offered. In this context, 5G targets the correct implementation of every application integrated into the use cases. Nevertheless, the biggest challenge to make ITU-R defined cases (eMBB, URLLC and mMTC) a reality is the improvement in spectral efficiency. Therefore, in this thesis, a combination of two mechanisms is proposed to improve spectral efficiency: Non-Orthogonal Multiple Access (NOMA) techniques and Radio Resource Management (RRM) schemes. Specifically, NOMA transmits simultaneously several layered data flows so that the whole bandwidth is used throughout the entire time to deliver more than one service simultaneously. Then, RRM schemes provide efficient management and distribution of radio resources among network users. Although NOMA techniques and RRM schemes can be very advantageous in all use cases, this thesis focuses on making contributions in eMBB and URLLC environments and proposing solutions to communications that are expected to be relevant in 6G