ARA-OTIC is an O-RAN Open Testing and Integration Centre (OTIC) hosted by the Center for Wireless, Communities, and Innovation (WiCI) at Iowa State University (ISU). Leveraging ARA, the NSF Platforms for Advanced Wireless Research (PAWR) project on rural broadband, ARA-OTIC focuses on advancing the frontier of O-RAN through research and open-source initiatives, and it facilitates O-RAN adoption via real-world evaluation, demonstration, and pilot of O-RAN systems with applications in the loop.
Besides typical OTIC facilities, ARA-OTIC provides an at-scale, field-deployed experimental infrastructure for research and innovation in far-edge wireless systems and their applications in precision agriculture, community services, and so on. In particular, ARA-OTIC features the first-of-its-kind, real-world deployment of long-range, high-capacity wireless x-haul and access platforms in agriculture and rural settings, ranging from the state-of-the-art crop and livestock farms to rural cities and including user equipment such as agriculture vehicles, robots, drones, sensors, as well as public safety vehicles and facilities. With wireless x-haul platforms operating at the 11 GHz, 71-86 GHz, and 194 THz bands and offering communication capacities up to 160 Gbps at distances up to 15 Km, the ARA x-haul exemplifies low-cost, high-capacity middle-mile solutions connecting remote rural communities and agriculture farms to the nearest wired Internet backbone. With 5G-and-beyond Multiple-Input Multiple-Output (MIMO) systems operating at the 460-776 MHz, 3.4-3.6 GHz, and 27.5-28.35 GHz bands and with 14, 192, and 384 antenna elements per sector, respectively, the ARA radio access network (RAN) exemplifies massive MIMO wireless access platforms that offer high capacity and large cell radius through beamforming, thus reducing the required spatial density of RAN base stations and cost of rural wireless. Besides the aforementioned large-scale outdoor wireless infrastructure and the associated edge and cloud computing resources, ARA-OTIC also operates an indoor sandbox for testing and integration purposes.
ARA OTIC Platform for Integration and Testing
ARA OTIC Testing Architecture
ARA OTIC Platform Services
| ARA OTIC O-RAN Testing Services supported by Industry-Leading Partners & Open-Source Platforms | |||
| Services | Deliverables | Testing Equipment | Test Category/Standard |
| Large-Scale UE & RAN Emulation | Emulation of thousands of UEs (2,048 provisioned, scalable to 10,000) under realistic mobility, fading, Carrier Aggregation, MU-MIMO and mixed-numerology conditions to stress-test O-CU/O-DU at deployment scale. | VIAVI TM500 UE and O-RU Emulator | ORAN TIFG Performance, Functional, Service, RIC enabled use case specific tests, E2E, Profile-based performance, Load and Stress, WG4 IOT, and CONF. |
| Realistic Application & Traffic Testing | Generation of stateful, real-world application traffic per emulated device to validate O-CU/O-DU behavior under production-like load and diverse traffic profiles. | VIAVI TeraVM Real Data Applications (RDA) | End-to-End Performance, Load & Stress |
| 5G Core & IMS Service-Layer Validation | End-to-end validation of 3GPP interfaces such as N1, N2, N3 and N6, VoNR and ViNR call flows and 5G SA/NSA service-layer behavior (scalable to 200,000 UEs support) | VIAVI TeraVM Core Emulator (with IMS Server) | E2E, Functional, Service-Layer |
| O-RU Conformance Testing | Full O-RAN WG4 Conformance test suite for vendor O-RUs over the Open Fronthaul LLS-7.2x interface, including M-plane and C/U-plane validation, with automated reporting. | VIAVI TM500 O-RU Tester + R&S PVT360A | O-RAN WG4 CONF, 3GPP TS 38.141 |
| O-DU Conformance Testing | Full O-RAN WG4 Conformance test suite for vendor O-DUs over the Open Fronthaul LLS-7.2x interface, including M-plane and C/U-plane validation, with automated reporting. | VIAVI TM500 as O-RU and UE Emulator and TeraVM RDA and Core Emulator | O-RAN WG4 CONF, 3GPP TS 38.141 |
| O-CU / O-DU & RIC Integration Testing | Conformance, interoperability, and performance validation of vendor O-CU and O-DU implementations, including F1 and E1 interface verification, Near-RT RIC integration, xApp behavior testing, E2 interface validation | VIAVI TeraVM O-CU Tester | O-RAN TIFG tests, WG5, WG3 (E2) |
| Real-Time Fronthaul/Xhaul Analysis & Troubleshooting | Real-time, per-packet visibility into Open Fronthaul M-plane, S-plane, and C/U-plane sessions, including fronthaul packet flows, timing accuracy, and link utilization. Adds PHY-layer observation of RE/RB resource grid usage from C/U-plane traffic to accelerate IOT and end-to-end integration and troubleshooting. | VIAVI NITRO Wireless XhaulAdvisor | WG4 IOT/CONF DLM Tests O-DU/O-RU |
| RF Signal Generation & O-RU RF Conformance | Precision vector signal generation and analysis for O-RU RF performance and conformance testing, fully automated with integrated test management. | Rohde & Schwarz PVT360A (with TM500 O-RU Tester) | FR1/FR2 TDD Conducted Signal Tests (UC Plane), S-plane, M-plane O-RAN WG4 CONF, 3GPP TS 38.141 |
| Precision Timing & Transport Verification | Portable Grandmaster Clock (GMC) reference for PTP/SyncE timing validation and handheld Ethernet/transport troubleshooting for on-site fronthaul and network verification/troubleshooting. | VIAVI MTS-5800 with Timing Module | ORAN WG4 IOT S-plane Timing (G.8275.1/G.8275.2), Transport |
| O-RAN Security Testing | End-to-end security validation across SMO, Non-RT and Near-RT RIC, O-CU, O-DU, and O-RU aligned with O-RAN Alliance WG11 security specifications. | VIAVI TeraVM Classic Security Test Suite / Security Auditor | 3GPP Security Assurance for E2E System, SMO, RICs, O-CU, O-DU, O-RU, etc |
| Open-Source RAN Reference & Research Platform | Vendor-neutral open-source protocol stacks for interoperability validation, research experiments, and academic collaboration. | srsRAN/OAI | IOT, Research, Reference Validation |
| Automated Test Execution & Reporting | Zero-touch scheduling, reconfigurable testbed orchestration, and AI/ML-driven execution of O-RAN test campaigns with customizable reporting, observability, smart test prioritization, and CI/CD pipeline integration. Deployable across bare-metal, private, and public cloud environments. | VIAVI VAMOS (Automation & Orchestration System) | Multi-Vendor Test Automation, Optimization, Orchestration & Analytics, Security compliance |
| Flexible Fronthaul Topology Support | Complete support for LLS-C1 through LLS-C3 fronthaul topologies with precision PTP timing infrastructure for any deployment scenario. | Dedicated GMC, Cisco Catalyst 9500, Dell PowerSwitch S5224F-ON, FibroLAN Falcon-RX Xhaul (Fronthaul and Management switches) | O-RAN WG4 CUS-Plane Synchronization Topologies (LLS-C1 / C2 / C3) |
| End-to-End O-RAN Validation Lifecycle | Single-facility coverage across IOT, Security, E2E (Performance, Functional, Services, RIC-enabled use case, Stress and load, Profile based), and Conformance testing, the complete O-RAN validation from components to deployment. | Integrated ARA OTIC Facility/ Open RAN Testbed | All O-RAN Test Categories |
ARA OTIC Awards O-RAN Certificates and/or Badges
| Test Category | O-RAN Award Type | O-RAN Award Mark | RAT Under Test |
| E2E Performance, Functional, Service, RIC Use Cases, Stress/Load, and Profile-Based Tests | O-RAN End-to-End (E2E) Badge |  | 5G NR |
| Conformance CUS-M Planes (O-RU and O-DU) | O-RAN Certificate |  | 5G NR |
| Interoperability (IOT) – CUS Planes | O-RAN Interoperability (IOT) Badge |  | 5G NR |
| Security (3GPP Security Assurance, SMO, RICs, O-CU, O-DU, and O-RU) | O-RAN End-to-End (E2E) Badge | | 5G NR |
Contact: otic@arawireless.org