Interactive Multi-User Virtual Reality Training

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Practical training using real equipment is often expensive, potentially dangerous, and non-scalable. Virtual reality (VR) could make it safer, scalable, and cost-effective. Today, however, VR is still largely restricted to a single-user experience. As a breakthrough solution, INTERACT will enable multi-user VR applications. It will feature wireless low-latency frame-to-frame streaming, fast multisensory synchronization, location prediction, and user-driven perception analysis of the solution.

Virtual reality (VR) falls short for high-quality training

Practical training requires unexperienced students to operate expensive and possibly dangerous equipment under the constant supervision of an expert trainer. VR could potentially offer much safer and cost-effective solutions for practical training.

Current state-of-the-art VR systems, however, do not yet allow lifelike interactions among multiple users. Thus, they cannot support full collaborative virtual learning. The current challenges are:

  • The requirement to use wired head-mounted VR headsets, each connected to a workstation.
  • The need for a separate physical space per user, inhibiting natural movement.
  • High latencies and desynchronization, leading to cybersickness.
  • Unintuitive handheld controllers.

Designing a new wireless platform for multi-user VR training

The partners in the INTERACT project aim to create a solution that overcomes these barriers. They envisage three important innovations:

  • A high-rate, high-reliability, low-latency (HRLLC) wireless network based on millimeter wave technology, connecting VR users to the edge cloud.
  • An edge cloud VR training platform that maps real to virtual movements and actions, while maintaining 20ms end-to-end latency and synchronization to avoid cybersickness.
  • A user-driven perception-based evaluation method for training, assessed with two use cases.

“INTERACT will design the technology to enable multi-user VR applications. This will form the basis for a next generation of practical training applications that are safe, efficient, and scalable.”


Enabling interactive VR training with multiple users through advanced low-latency wireless technology, user tracking, and multisensory synchronization.

INTERACT is an imec.icon research project funded by imec and Agentschap Innoveren & Ondernemen (VLAIO).

The project started on 01.03.2022 and is set to run until 29.02.2024.



  • imec – IDLab IBCN – UGent
  • imec – IDLab MOSAIC – UAntwerpen


  • Project lead: Leonard Tam
  • Research lead: Jeroen Famaey
  • Proposal manager: Maria Torres Vega
  • Innovation manager: Annelies Vandamme