6G and AI research, and O-RAN and NTN test solutions

The company will also showcase the VIAVI Automated Lab-as-a-Service for Open RAN (VALOR).

6G

• Full AI neural network transmission: showcasing VIAVI’s proprietary complete neural network (NN) receiver in a downlink scenario, utilising 5G-NR compliant OFDM signal (PDSCH) transmission and reception on a custom-built testbed
• MIMO Delay-Doppler Domain waveform: demonstrating Orthogonal Time Frequency Space (OTFS) modulation technique's performance in multi-antenna transmission using a VIAVI proprietary simplified precoder solution and comparing it with OFDM
• Rate-splitting multiple access in an overloaded network: showcasing a VIAVI proprietary technique in the Rate Splitting Multiple Access (RSMA) scheme, designed to mitigate multi-user interference in overloaded networks where transmitter antennas are fewer than the users

High-fidelity digital twin

VIAVI collaborates with the Institute for Wireless Internet of Things and the Open6G cooperative research centre at Northeastern University on large-scale RF propagation channel modelling based on AI and ML technologies to develop a city-scale digital twin of a 6G network. VIAVI and Northeastern will demonstrate:

• The use of AI/ML to augment ray tracing for radio frequency (RF) propagation modelling to drive the digital twin
• Conducting real-world measurement campaigns on the Northeastern Boston campus using the VIAVI Ranger rugged RF capture and playback instrument
• Incorporating higher-layer KPIs in the digital twin to model the effects of network conditions on application performance more effectively

Open RAN and NTN

• VALOR: made possible by a $21.7 million grant from the US NTIA Public Wireless Supply Chain Innovation Fund (PWSCIF), VALOR provides fully automated, open, and impartial testing and integration for Open RAN. It offers a pathway to certification in the US for new entrants, startups, and academia. Access to VALOR is free for academic institutions and NTIA co-grantees, subject to availability
• NTN: VIAVI and Rohde & Schwarz will jointly demonstrate an end-to-end NTN-NR testbed for the lab, evaluating end-to-end user app performance over NTN links
• RIC Test: demonstrating an energy-saving rApp integrated with a Non-RT RIC using the VIAVI TeraVM RIC Test. This rApp uses intelligent procedures based on ML to optimise cell control, achieving significant energy savings without compromising service quality in realistic scenarios
• O-RAN Security Test: validating O-DU/O-CU security using the VIAVI O-RAN Security Suite

Dr. Sameh Yamany, VIAVI Chief Technology Officer, will deliver a keynote address on ‘Telecom Digital Twins And Their Role In Future Technologies Maturity’. The address will be delivered on Wednesday, June 12, 9:00-11:00 am in the Plaza Ballroom, Concourse Level.

Dr. Paul Harris, Principal Wireless Architect at VIAVI, will participate in a panel discussion on ‘Bridging the Gap: Channel Sounding and Modelling for Joint Communications and Sensing’. The panel will convene on Wednesday, June 12, 11:30 am-1:00 pm in Plaza Ballroom D, Concourse Level.