Programa del congreso

En este trabajo se propone un análisis en términos de capacidad para una red de acceso centralizada compuesta por macro celdas y celdas pequeñas en interiores. Para ello, se emplean técnicas de coordinación de interferencia intercelda (ICIC- Inter-Cell Interference Coordination) y transmisión coordinada multi-punto (CoMP- Coordinated Multi-Point transmission/reception) evaluando su influencia en la red bajo distintos niveles de carga y políticas de coordinación. La fase de pruebas se lleva a cabo mediante el uso de una herramienta de planificación de redes radio. Con esta herramienta se evalúan las métricas de eficiencia espectral y asignación de recursos compartidos por celda, obtenidas sobre una red heterogénea Long-Term Evolution (LTE) real. Los resultados presentan las condiciones de carga y coordinación entre celdas necesarias para conseguir mejoras de capacidad en el sistema.

The fifth generation (5G) of mobile networks leads to novel services and heterogeneous scenarios that increase the complexity of management and orchestration tasks. In this context, Self-Organizing Networks (SON) are highly important to automatically monitor the network. This will allow to detect potential network failures and optimize the network performance. This paper proposes a methodology to automatically monitor a mobile network based on key performance indicators.

The Chair of the Spanish public broadcaster RTVE at the Universidad Politécnica de Madrid –UPM presented last October 2020 the first complete pilot broadcast, worldwide, of UHD 8K signal in DVB-T2. The broadcast included a signal characterized by a resolution of 7680x4320 pixels and new technologies such as High Dynamic Range with the HLG transfer function, High Frame Rate with 50 frames per second, Wider Colour Gamut following the ITU-R BT.2020 recommendation color space, 10-bit depth and 4:2:0 subsampling, and multichannel audio 5.1.4. The resulting bit rate of the audiovisual content was around 32 Mbps thanks to the use of very efficient standards, such as HEVC and Dolby AC-4, for the video and audio encoding, respectively. The DVB-T2 standard, with a COFDM modulation, was used for the transmission of the signal.

This paper analyses a simulation of performance in an intra-wagon environment based on four scenarios. The 28 GHz and the 37 GHz bands are assessed for the use of 5G millimeter (mmWave) communications. The main objective was to apply different multiple-input single-output orthogonal frequency division multiplexing (MISO-OFDM) techniques such as Hadamard quasi-orthogonal space-time block code (HQSTBC) and transmit beamforming to analyze the throughput achieved as a function of the signal-to-noise ratio (SNR) applied. Performance is analyzed by scenario, applied band and in terms of the two algorithms used. In addition, the results are simulated with 4 and 8 transmitting antennas.

El objetivo principal de este paper es presentar el piloto de Red.es en Castilla la Mancha en el que se realizará una transmisión y recepción de un canal de Televisión y Radio de TVE, con una red 5G Broadcast, en la ciudad de Toledo.