NextG Lab Resources
GMU O-RAN Testbed
Left image shows one 4G/5G O-RAN testbed setup with two base stations, two COTS UEs, and one SDR UE.
(Right image shows the rack server hosting Near-RT RIC that hosts OSC xApps (such as, KPIMON xApp) as well as our developed xApps (such as, Interference classification xApp).
Fully open-source 4G/5G O-RAN testbed built using
srsRAN (and OAI) for 4G/5G UE, eNB/gNB
srsEPC/Open5GS for EPC/5G Core
O-RAN software community code for RAN Intelligent Controller (RIC) and FlexRIC
Software-defined radios (USRPs) UEs and COTS UEs
Supports both SDR connections (Over-the-air and cable-based links) and ZMQ-based simulated links.
Supports collection of data such as I/Q samples and KPMs over the "E2-Lite" interface for training and testing of ML-driven xApps in the near-RT RIC for different experimental scenarios.
This testbed has been built using an open-source Open AI Cellular (OAIC) platform codebase and libraries. Learn more about OAIC platform here: www.openaicellular.org
GMU O-RAN Testbed is designated as a co-host for Virginia Tech/CCI led North American O-RAN Testing and Integration (OTIC) Center in Washington DC/Arlington VA. More information can be found here: https://ccixgtestbed.org/cci-designated-as-otic.html
5G Positioning Testbed
5G positioning testbed using three base stations.
Full functional Open air interface (OAI) based 5G positioning testbed.
Currently supports Positioning Reference Signal (PRS) and capturing of Time of Arrival (ToA) measurements which can be used for positioning.
Utilizes three base stations (synchronized using Octoclock-G) for positioning a UE.
Also supports MATLAB 5G toolbox integrated with SDRs.
mmW Testbed
A fully functional mmWave testbed.
Established a fully operational mmWave testbed at 28 GHz, showcased in the left figure above. The setup features a transmitter and receiver, both equipped with Sivers EVK 02004s as front-end components.
Utilized a USRP x310 at both ends, with the mmWave transmitter and receiver incorporating a Sivers EVK02004 and its integrated BFM02801 4 × 4 phased array antenna.
The EVK enables precise control over output power, gain, beamforming, DC offset, and Local Oscillator (LO) frequency. Operating the EVK in Intermediate Frequency (IF) mode, a 4 GHz sine wave is generated using a USRP X310. The EVK's LO frequency is configured to 24 GHz for transmitting the mmWave signal.
Successfully conducted beam measurements (from -27 deg to +27 deg), as depicted in the figure on the right.
Milli-O-RAN Testbed
Overview of the Milli-O-RAN Testbed
ASCENT Tool
GUI for ASCENT Tool
Context-aware ASCENT spectrum sharing/interference analysis tool for satellite bands, with a case study of 12 GHz (12.2 - 12.7 GHz) band.
You can access the ASCENT tool using the GitHub Link.
Relevant papers:
ASCENT paper [DySPAN'24]: https://arxiv.org/pdf/2402.05273.pdf
CAT3S paper [DySPAN'24]: https://arxiv.org/pdf/2402.04447.pdf
Interference analysis paper [WCL'23]: https://ieeexplore.ieee.org/abstract/document/10139318
