13 结果
Best practices for mobile network testing for mission-critical applications
Key Points: Mission-Critical Infrastructure: Military operations require extremely high reliability and availability, as any downtime can result in compromised missions and significant strategic losses. The reliability of communication networks is crucial to ensure seamless execution of military operations. Fundamental requirements: Military applications often require low latency and sustainable latency to ensure real-time communication and control, particularly in situations where split-second decisions can mean the difference between success and failure. This is critical for applications such as command and control systems, surveillance, and reconnaissance. 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 military use-cases that covers a representative set of different, common types of network traffic.
Jul 02, 2025 | AN-No. 8NT21
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 | AN-No. 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 | AN-No. 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 | AN-No. 8NT13
随着运营商使用曾包含其他服务的新频段，移动网络中的频谱清理变得日益重要。这对于 5G NR 的推出尤为重要。5G NR TDD 网络已在未知无线电环境中进行了全球性部署，无用发射机在此环境中产生的上行链路干扰会被下行链路信号遮蔽，导致干扰查找尤为困难。在启用网络之前自动检测干扰信号，并结合传统的手动检测技术，有助于共同解决这个难题。
4月 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 | AN-No. 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 | AN-No. 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 | AN-No. 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 | AN-No. 8NT09
多年以来，车辆制造商和政府机构一直在探寻方法以提高道路安全性、有效管理交通流量以及在未来增强驾驶舒适性、便捷性和安全性。车联网 (V2X) 是新一代信息和通信技术，可将车辆与万物相连，能够支持实现这些愿景。V2X 旨在提供低延迟的车对车 (V2V)、车对路边基础设施 (V2I) 和车对行人 (V2P) 通信，以为未来的驾驶员辅助系统开拓新局面。蜂窝车联网 (C-V2X) 是 3GPP R14 规范中定义的一种通信标准，使用 LTE 技术作为通信的物理接口。LTE C-V2X 扫频仪支持客户验证、测试和优化正在部署或早已建立的 ITS 交通系统。这是因为扫频仪能够以无源方式侦听从路边单元 (RSU)、车辆或任何其他支持 C-V2X 的设备广播的电脑消息 (5.9 GHz)。传统的扫频仪测量适用于所有物理通道（PSCCH 和 PSSCH）以及北美、欧洲和中国三大地区的已解码 ITS 消息内容，并会测量射频信号功率以及 RSRP、RS-CINR 和 RSSI 等质量参数。
10月 21, 2022 | AN-No. 8NT07
为确保 NB-IoT 应用正确工作，需要充分的网络覆盖。使用者必须测量覆盖范围，以确保可靠的 NB-IoT 连接。罗德与施瓦茨的移动网络测试提供了独特组合的测试解决方案，能够使用网络扫频仪准确测量下行链路覆盖范围。解决方案能够使用连接到 R&S®ROMES 的 NB-IoT 设备测量通信过程中的设备/网络交互、上行链路行为、协议、信令负载和能源效率。
2月 20, 2018
借助罗德与施瓦茨的移动网络测试解决方案，运营商能够通过硬件相关、容量增强型功能（比如，天线仰角优化、载波聚合、4x4 MIMO 以及 6 扇区站点）有效增加网络容量。
8月 09, 2016