Priority based inter-twin communication in vehicular digital twin networks

TL;DR

This paper introduces a priority-based communication framework for vehicular digital twins to improve response times and manage communication overhead, especially under traffic congestion conditions.

Contribution

It proposes a novel priority-based inter-twin communication method, including algorithms for intra- and inter-twin data sharing, addressing congestion issues in VDT networks.

Findings

Proposed algorithms outperform existing methods in response time.

Effective management of communication overhead in VDT networks.

Enhanced data sharing efficiency under traffic congestion.

Abstract

With the advancement and boom of autonomous vehicles, vehicular digital twins (VDTs) have become an emerging research area. VDT can solve the issues related to autonomous vehicles and provide improved and enhanced services to users. Recent studies have demonstrated the potential of using priorities in acquiring improved response time. However, since VDT is comprised of intra-twin and inter-twin communication, it leads to a reduced response time as traffic congestion grows, which causes issues in the form of accidents. It would be encouraging if priorities could be used in inter-twin communication of VDT for data sharing and processing tasks. Moreover, it would also be effective for managing the communication overhead on the digital twin layer of the cloud. This paper proposes a novel priority-based inter-twin communication in VDT to address this issue. We formulate the problem for priorities of digital twins and applications according to their categories. In addition, we describe the priority-based inter-twin communication in VDT in detail and algorithms for priority communication for intra-twin and inter-twin are designed, respectively. Finally, experiments on different priority tasks are conducted and compared with two existing algorithms, demonstrating our proposed algorithm's effectiveness and efficiency.