12 Resultados
A measurement campaign quantifying the impact of intermodulation in 5G TDD networks
Critical infrastructure: With the deployment of TDD networks, the mobile network community recognizes the critical importance of cell synchronization and the use of uniform TDD patterns across different networks for the proper operation of mobile radio networks. Variety of scenarios: Possible scenarios include cross-border situations, interactions between private campus networks and public mobile networks, and accidental synchronization chain breaks or misconfigurations within the mobile network.Measurement techniques: To quantify the effects of non-synchronized cells and using different TDD pattern in neighboring networks, R&S, in collaboration with TU Dresden and Advancing Individual Networks GmbH (AIN), conducted a measurement campaign using movable networks with full control over all network parameters. This campaign measured the effects on uplink and downlink throughput, mapping these to RSSI/RSRP values received at the interfered site.Customer benefits: The available quantification is valuable for predicting and assessing potential interference scenarios before setting up and operating a new cell site.
Sep 11, 2024 | N.º de nota de aplicación 8NT18
Best practices for mobile network testing for business-critical applications
Business-critical infrastructure: Industrial applications require extremely high reliability and availability, as any downtime can result in significant financial losses. Fundamental requirements: Industrial applications often require low latency and even more important a sustainable latency to ensure real-time communication and control. Measurement Techniques: As soon as the radio access network is used, innovative testing methods are needed beforehand to proactively test the network capability and to identify any potential issues. We propose a standard test procedure for the characterization of a network regarding industrial use-cases that covers a representative set of different, common types of network traffic.
Aug 13, 2024 | N.º de nota de aplicación 8NT17
5G NR Reduced Capabilities (RedCap) network scanning
Purpose of RedCap: RedCap is designed for use cases requiring reasonable data throughput, cost-efficient devices, reduced power consumption and smaller device footprint to support applications like wireless industrial sensors, video surveillance and smart wearables in which ultralow latency isn’t essential.Technology basics: Understanding the technology basics helps facing configuration complexities and avoiding potential coexistence issues with regular 5G.RedCap field verification: New mobile network technology introductions like 5G RedCap benefit from field measurements during their typical life-cycle phases (engineering, network roll-out, and operation).Measurement Techniques: In early phases of new technologies, passive network measurements using network scanners are reliable and effective in detecting actual network and cell configurations.
Apr 23, 2024 | N.º de nota de aplicación 8NT13
La liberación del espectro en las redes de telefonía celular adquiere cada vez mayor importancia a medida que los operadores utilizan nuevas bandas que anteriormente contenían otros servicios. Esto es particularmente importante para el despliegue de la red 5G NR. La red 5G NR ya ha iniciado el despliegue a nivel global de las redes TDD en un entorno de radio desconocido en el que los transmisores no deseados pueden crear interferencias enmascaradas en el enlace ascendente a causa de las señales de enlace descendente, lo que hace que la búsqueda de interferencias sea particularmente exigente. Además de las técnicas manuales tradicionales, la detección automatizada de señales interferentes antes de conectar una red puede ser de gran ayuda.
abr 19, 2024
Best practices for national regulatory authorities
Key points:Importance of field measurements: Traditional network planning tools and models only offer an estimated view of mobile coverage. Field measurements are conducted under real geographical and load conditions, and therefore provide a more accurate picture and can discover interferences more effectively. Coverage investigations: When deploying a mobile network, operators must adhere to regulatory standards and licensing conditions. As a result, regulatory authorities carry out field measurements on a regular or ad hoc basis to validate compliance or investigate customer complaints. This process identifies coverage gaps and areas of poor network quality, enabling regulatory authorities to take actions to enhance service quality for consumers and guide network expansion.Foster competition: If the field measurements of the coverage and performance are performed on a scale representative of a given country, the transparency of these results can promote healthy competition between operators and better service for consumers, which is essential for economic growth and social development.Measurement Techniques: The harmonized methodology for measuring and evaluating data throughput and QoE based on popular services is described in ETSI TR 103 559.
Apr 15, 2024 | N.º de nota de aplicación 8NT14
P25 and FRMCS scanning
Key points: Critical Infrastructure: Learn about mission-critical communication for various agencies who deal with Public Safety such as first responders, police, firefighters, medics and its crucial role in ensuring safety of society.Reliability of Communication: Understand the challenges posed by mission-critical communication, highlighting performance and reliability needs and special requirements such as safe group communications.Technology Migration: Delve into the migration of mission-critical communication from long-standing narrow-band technologies to broadband use cases considering migration timelines.Measurement Techniques: Explore network measurement methods for passive testing of legacy MCX technologies planned to be used in the networks for quite some time (a later release of the document will focus on the broadband successors)
Mar 12, 2024 | N.º de nota de aplicación 8NT12
Spectrum scans are beneficial for many use-cases such as troubleshooting, interference detection and interference hunting, or verification tasks like scheduler verification or other engineering tasks. A time-gated spectrum scan, which is a power spectrum scan which applies a time gate on uplink/downlink slots/symbols and/or the guard period reveals even more details in uplink/downlink or guard period power spectrum. This allows to focus on the uplink / downlink or guard period power spectrum in 5G NR TDD networks. This educational note explains use cases for spectrum measurements, the complexity in 5G TDD and its technology basics, and which problems can be solved with the described solution. The software used is R&S®ROMES4 together with a R&S®TSMx6 drive and walk test scanner.
Sep 21, 2023 | N.º de nota de aplicación 8NT08
Modern societies worldwide depend on the performance, reliability and security of critical infrastructures and networks. There is a plethora of “new verticals” such as manufacturing, warehouse, mining, ports or other critical infrastructure, just to name a few. These “new vertical” use cases all have one common requirement: the mobile network needs to provide a superior performance compared to a commercial mobile network. In such environments 5G brings new capabilities to build fast and secure campus or private networks tuned to higher performance, which can increase productivity and efficiency. To be successful in these business-critical use cases, the wireless networks need to be as reliable as the wired ones. This educational note describes the different test methods to be able to verify the superior network performance and to help finding root causes of potential problems limiting the performance. We distinguish between passive tests and active tests.
Aug 11, 2023 | N.º de nota de aplicación 8NT09
Los fabricantes de automóviles y los organismos gubernamentales llevan años buscando maneras de aumentar la seguridad en carreteras, gestionar el tránsito de manera eficiente y, en el futuro, hacer la conducción más confortable, conveniente y segura. «Vehículo con cualquier elemento» (V2X) es una nueva generación de tecnologías de la información y la comunicación que conecta vehículos con cualquier otro elemento y puede ayudar a estos objetivos. V2X está diseñado para ofrecer comunicaciones de baja latencia en las modalidades «vehículo a vehículo» (V2V), «vehículo a infraestructura viaria» (V2I) y «vehículo a peatón» (V2P), con el fin de agregar una nueva dimensión a los futuros sistemas de asistencia al conductor.Cellular V2X (C-V2X) está definido por 3GPP en el Rel. 14 como el estándar de comunicaciones y utiliza la tecnología LTE como la interfaz física para comunicaciones.El escáner LTE C-V2X proporciona a los clientes la oportunidad de verificar, probar y optimizar los sistemas de tránsito de los sistemas de transporte inteligentes (STI) que están siendo desplegados o ya se encuentran establecidos. El escáner logra esto al escuchar de manera pasiva mensajes de PC (5.9GHz) que se emiten desde las RSU (unidades de carretera), vehículos o cualquier otro dispositivo que permita la comunicación de vehículos con todo su entorno (C-V2X). Para cada canal físico (PSCCH y PSSCH) se proporcionan mediciones de escáneres tradicionales en relación con la potencia y calidad de la señal de RF, como potencia de recepción (RSRP), RS-CINR e indicador de intensidad de la señal recibida (RSSI), así como contenido de mensajes de sistemas STI decodificados para las tres regiones (Norte América, Unión Europea, China).
oct 21, 2022 | N.º de nota de aplicación 8NT07
Cree y simule situaciones de tránsito detalladas para verificar la conectividad de la tecnología C-V2X (vehículo con cualquier elemento de red celular)
jun 30, 2022
Para que las aplicaciones NB-IoT puedan funcionar correctamente se necesita disponer de suficiente cobertura de red. Es preciso medir la cobertura a fin de asegurar la robustez de la conexión NB-IoT. El Mobile Network Testing de Rohde & Schwarzproporciona una solución sin igual para pruebas combinadas que mide con precisión la cobertura del enlace descendente por medio de escáneres de red. Mide la interacción dispositivo/red, el comportamiento del enlace ascendente, el protocolo, la carga de señalización y la eficiencia energética durante las comunicaciones a través de equipos NB-IoT conectados al R&S®ROMES.
feb 20, 2018
Las soluciones para la prueba de redes móviles de Rohde & Schwarz permiten que los operadores aumenten de forma eficiente la capacidad de la red con funciones mejoradas de hardware, como la optimización de la inclinación de antena, la agregación de portadoras, 4x4 MIMO y emplazamientos de seis sectores.
ago 09, 2016
