12 결과
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-번호 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-번호 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-번호 8NT13
이동통신 사업자들이 기존의 다른 서비스를 위해 사용되던 주파수 대역을 사용하기 시작하면서 이동통신 네트워크 내 대역 정비의 중요성이 더욱 커지고 있습니다. 이러한 대역 정비는 특히 5G NR 네트워크 구축에서 더욱 중요합니다. 전 세계적으로 구축을 시작한 5G NR 네트워크는 TDD 방식을 사용하기 때문에 업링크 간섭이 다운링크 신호에 의해 가려지는(마스킹) 특성이 있습니다. 따라서, 간섭 신호의 탐지가 더욱 어려워집니다. 자동화 간섭 탐지 솔루션을 기존의 수동 탐지 방식과 함께 사용하여, 네트워크 구동 전 효과적인 간섭 탐지를 수행할 수 있습니다.
4월 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-번호 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-번호 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-번호 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-번호 8NT09
자동차 제조사와 정부 부처는 오랜 기간 교통 안전을 강화하고, 교통을 효율적으로 관리하며 더욱 편안하고 편리하며 안전한 미래의 교통을 구현할 방법을 찾고 있었습니다. V2X(Vehicle-to-Everything)는 차량을 모든 사물에 연결하여 이러한 목표를 지원할 수 있는 차세대 정보통신 기술입니다. V2X는 저지연 V2V(Vehicle-to-Vehicle), V2I(Vehicle-to-Roadside Infrastructure), V2P(Vehicle-to-Pedestrian) 통신을 제공하여 미래의 운전자 보조 시스템에 새로운 차원을 더하도록 설계되었습니다.3GPP가 Release 14에서 통신 표준으로 정의한 C-V2X(Cellular V2X)는 물리 계층 통신 인터페이스로 LTE 기술을 사용합니다.사용자는 LTE C-V2X 스캐너를 사용해 구축 단계에 있거나 이미 구축 완료된 ITS 교통 시스템을 검증, 테스트, 최적화할 수 있습니다. 네트워크 스캐너는 RSU(Roadside Unit), 차량 및 기타 C-V2X 구현 장치에서 브로드캐스트되는 메시지(5.9GHz)를 수신하여 이러한 기능을 구현합니다. RSRP, RS-CINR, RSSI와 같은 RF 신호의 출력 및 품질에 관한 일반적인 스캐너 측정 항목들이 각 물리 채널(PSCCH 및 PSSCH)과 디코딩된 3개 지역별(북미, EU, 중국) ITS 메시지 콘텐츠에 대해 제공됩니다.
10월 21, 2022 | AN-번호 8NT07
NB-IoT 애플리케이션이 올바르게 작동하려면 충분한 네트워크 커버리지가 필요합니다. 안정적 NB-IoT 연결을 보장하기 위해서는 커버리지를 측정해야 합니다. 로데슈바르즈모바일 네트워크 테스트는 네트워크 스캐너를 사용하여 DL 커버리지를 정확하게 측정하는 독자적인 결합 테스트 솔루션을 제공합니다. 이 테스트에서는 R&S®ROMES에 연결된 NB-IoT 기기를 이용한 통신 중 기기/네트워크 상호 작용, UL 동작, 프로토콜, 시그널링 로드, 에너지 효율성을 측정합니다.
2월 20, 2018
네트워크 사업자는 네트워크 용량을 증가시키는 하드 웨어 연관 기술인 안테나 틸트 최적화, Carrier Aggregation, 4X4 MIMO, 6섹터 사이트와 같은 기능들을 로데슈바르즈 모바일 네트워크 테스트 솔루션을 통해 효율적으로 확대할 수 있습니다.
8월 09, 2016