TECHNICAL OVERVIEW P8800S UeSIM RAN Testing Toolset UE emulation solutions for RAN and Open RAN testing Testing of RAN and Open RAN Networks The Radio Access Network (RAN) is a vital component of mobile telecommunications systems, connecting individual devices to the broader network through radio connections. In the context of 5G, modern RAN technologies have significantly evolved to support higher speeds, lower latency, and greater capacity. Key features of modern RAN include: • Massive MIMO (Multiple Input Multiple Output, mMIMO) • Beamforming • Network Slicing Open RAN (O-RAN) is an approach to building RANs using open and interoperable interfaces, allowing components from different vendors to work together providing following flexibility for the network providers and operators. Artificial Intelligence (AI) and Machine Learning (ML) plays a crucial role in modern RAN. AI enhances optimization of the network performance, efficiency and adaptability. AI analyzes real-time data for better resource allocation, reduces latency, and enables predictive maintenance to prevent issues. This results in smarter, more reliable networks ready for future advancements like 6G. Figure 1. RAN and O-RAN architecture for Terrestrial and Non-Terrestrial netwo

Testing Radio Access Network (RAN) and Open RAN (O-RAN) components involves several complex challenges. For RAN, ensuring seamless integration and performance across various network elements is critical. O-RAN introduces additional hurdles with its multivendor, disaggregated architecture, requiring rigorous conformance and interoperability testing to ensure different vendors' components work together effectively. The disaggregation of gNB components necessitates testing each part in isolation and in integrated scenarios, adding to the complexity. Development phase Development phase includes various...

Deployment phase At deployment phase testing is continuous process where new networks are rolled out, new network releases are being validated, and performance is continuously optimized. • How to seamlessly integrate into continuous CD/CI/CT workflows for regression. • How to replicate in the lab complex issues coming from the field. • How to assess network optimizations before deployment. P8800S UeSIM RAN Testing Toolset Figure 3. P8800S UeSIM RAN testing toolset UeSIM is a UE emulation solution which enables infrastructure vendors, chipset providers and mobile operators to validate end-to-end...

• Scalable up to thousands of UEs and 10+ Component Carriers’s with simulation of real application data and generation of network traffic load. • Support for gNB wrap-around testing with Keysight core emulation option. • RedCap, Private Networks and Network Slicing. • Service quality validation with subscriber modeling, and multi-play voice, video, and data traffic generation: eMBMS, VoNR, ViNR. • Advanced mobility scenarios, fading and cross-cell interference simulation. • Automation and Integration into CI/CD/CT Workflows. • Data generation for AI/ML, AI/ML Benchmarking, RAN Workloads for AI...

AirMosaic UeSIM application • Main user interface to control UeSIM system. • Test system configuration and scenario creation. • Real-Time test execution, results analysis and reporting. • eLSU runs the UeSIM full stack protocol signaling and control functions of the solution. • System can be scaled up by clustering multiple eLSU units. • SDR provides the RF connections to O-RU or gNB up to 16 layers per unit. Number of layers can be scaled up with multiple SDR units. • Designed for comprehensive testing of Massive MIMO (mMIMO) and beamforming technologies up to 16 co-scheduled MU-MIMO UEs in...

Figure 5. Airmosaic UeSIM Application with mMIMO configuration and beam analytics Automation, analytics and reporting with Atlas Test Management Center (Atlas-TMC) • Atlas TMC provides the automation, analytics and reporting interface with pre-defined test case scenarios. • O-RAN compliance test scenarios enable user to perform test cases according to O-RAN Alliance and 3GPP specifications. Figure 6. Atlas test management center

UeSIM provides test solution spanning from early 3GPP feature validation to E2E network performance testing. Below the key use cases highlighted. • mMIMO DL and ULPI performance validation, including beamforming • RAN E2E Performance Testing and Optimization • AI-RAN workload generation, KPI validation and training data generation. • Non-Terrestrial Networks Testing (NTN) • O-RAN Compliance Testing covering interoperability, performance and security • Energy Efficiency Testing 3GPP release validation can be split in pre-release validation, when release is not published yet, and frozen release...

Massive MIMO (mMIMO) Beamforming UeSIM provides the solution to cover the needs for mMIMO testing, in different phases of the product development worklow. Solution supports massive MIMO beamforming including also ULPI with O-RU up to 64T64R, with the possibility to aggregate more units to test wider O-RU panels and multiple MU-MIMO carriers. • Test multiple layers • Load testing • Mobility testing Figure 8. UeSIM solution with BMD advanced multi-port radio for testing RAN with beamforming mMIMO radio unit with ULPI capability. See use case of How to Emulate Massive MIMO End-to-End. RAN/gNB E2E...

Wrap-around test solution for RAN/gNB is created when combined with CuSIM and CoreSIM components. Core Simulation Solution Figure 10. P8800S UeSIM / P8822 RuSIM for Open RAN wrap-around testing For RAN testing over open fronthaul interface, when O-RU is not available or is wanted to be emulated, Keysight P8822S RuSIM provides solution solution for this use case. Read more about P8822S RuSIM solution. P8800S UeSIM offers a comprehensive testing solution for NTN, featuring built-in channel emulation to simulate both service and feeder links. This cost-effective solution enables customers to perform...