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The Role of Game Networking in the Fusion of Physical and Digital Worlds through 6G Wireless Networks

Van-Phuc Bui, Shashi Raj Pandey, Andreas Casparsen, Federico Chiariotti, Petar Popovski

TL;DR

This paper examines how game networking can drive the real-time fusion of physical and digital realms in 6G by detailing GN's core primitives—state synchronization, entity interpolation, input prediction, and lag compensation—and by analyzing RTI and RII design goals. It presents two case studies: a GA-enabled entity interpolation for video over ORAN with MEC, and a trusted wireless digital twin combining Kalman filtering and reinforcement learning to manage sensing and control with tight latency constraints. The contributions include a structured GN-6G framework, concrete architectural considerations, and experimental demonstrations that underscore PSNR gains and reliable DT performance under resource limits. The work highlights practical implications for edge intelligence, security, and semantic communications as essential elements for scalable, immersive Metaverse-like applications in future networks.

Abstract

The sixth generation (6G) of wireless technology is seen as one of the enablers of real-time fusion of the physical and digital realms, as in Digital Twin, eXtended reality, or the Metaverse. This would allow people to interact, work, and entertain themselves in an immersive social network of online 3D virtual environments. From the viewpoint of communication and networking, this will represent an evolution of the game networking technology, designed to interconnect massive users in real-time online gaming environments. This article presents the basic principles of game networking and discusses their evolution towards meeting the requirements of the Metaverse and similar applications. Several open research challenges are discussed, along with possible solutions through experimental case studies.

The Role of Game Networking in the Fusion of Physical and Digital Worlds through 6G Wireless Networks

TL;DR

This paper examines how game networking can drive the real-time fusion of physical and digital realms in 6G by detailing GN's core primitives—state synchronization, entity interpolation, input prediction, and lag compensation—and by analyzing RTI and RII design goals. It presents two case studies: a GA-enabled entity interpolation for video over ORAN with MEC, and a trusted wireless digital twin combining Kalman filtering and reinforcement learning to manage sensing and control with tight latency constraints. The contributions include a structured GN-6G framework, concrete architectural considerations, and experimental demonstrations that underscore PSNR gains and reliable DT performance under resource limits. The work highlights practical implications for edge intelligence, security, and semantic communications as essential elements for scalable, immersive Metaverse-like applications in future networks.

Abstract

The sixth generation (6G) of wireless technology is seen as one of the enablers of real-time fusion of the physical and digital realms, as in Digital Twin, eXtended reality, or the Metaverse. This would allow people to interact, work, and entertain themselves in an immersive social network of online 3D virtual environments. From the viewpoint of communication and networking, this will represent an evolution of the game networking technology, designed to interconnect massive users in real-time online gaming environments. This article presents the basic principles of game networking and discusses their evolution towards meeting the requirements of the Metaverse and similar applications. Several open research challenges are discussed, along with possible solutions through experimental case studies.
Paper Structure (20 sections, 6 figures)

This paper contains 20 sections, 6 figures.

Table of Contents

  1. Introduction
  2. Game Networking and Its Integration within 6G
  3. Game Networking Overview
  4. Essential Architecture Elements
  5. Synchronization
  6. Entity interpolation
  7. Input prediction
  8. Delay/lag compensation
  9. Design Considerations
  10. Real-time Interaction
  11. Remote Immersive Interaction
  12. Case Studies
  13. Demonstration of Entity Interpolation using Generative AI for Video
  14. Trusted Wireless Digital Twin for monitoring, prediction and controlling
  15. Research Opportunities and Challenges
  16. ...and 5 more sections

Figures (6)

  • Figure 1: An illustration of networking infrastructure.
  • Figure 2: Networking system with $(a)$ synchronization process of one server and 2 users; $(b)$ input prediction process where user predicts the output before receiving delayed true state from the server.
  • Figure 3: Experiment setup.
  • Figure 4: CDF of PSNR under different resolution factor ($\epsilon$).
  • Figure 5: The considered architecture depicting fusion of physical and digital worlds with communication diagram.
  • ...and 1 more figures