Bi-directional Digital Twin and Edge Computing in the Metaverse

Yu, Jin; Alhilal, Ahmad; Hui, Pei; Tsang, Danny H. K.

doi:10.48550/arxiv.2211.08700

Cited by 2 publications

(9 citation statements)

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“…One application of VTs for smart driving is to forecast the collision risks as warning and safety instructions for VMUs. 4 To ensure real-time physical-virtual synchronization, vehicles and VMUs continuously update their VTs in virtual spaces by obtaining sensing data from surrounding environments through the use of smart sensors, such as real-time vehicle status and passenger bio-data. 5 As computational requirements for building VTs and metaverse services may be unbearable for resource-limited vehicles, 6 vehicles offload computation-intensive tasks to nearby edge servers in roadside units (RSUs) that possess sufficient resources, 7 such as bandwidth and computing resources, 2,4 and multiple VTs can be deployed in the RSU simultaneously.…”

Section: Vehiclementioning

confidence: 99%

“…4 To ensure real-time physical-virtual synchronization, vehicles and VMUs continuously update their VTs in virtual spaces by obtaining sensing data from surrounding environments through the use of smart sensors, such as real-time vehicle status and passenger bio-data. 5 As computational requirements for building VTs and metaverse services may be unbearable for resource-limited vehicles, 6 vehicles offload computation-intensive tasks to nearby edge servers in roadside units (RSUs) that possess sufficient resources, 7 such as bandwidth and computing resources, 2,4 and multiple VTs can be deployed in the RSU simultaneously. However, because of the limited service coverage of RSUs and the mobility of vehicles, 8 a single RSU cannot continuously provide metaverse services for VMUs, requiring each VT to migrate from the current RSU to another to ensure a seamless immersive experience for VMUs.…”

Section: Vehiclementioning

confidence: 99%

“…For example, VMUs can see virtual scenes of the front windshield and side windows through head-mounted displays [6]. To ensure seamless immersion and interactions for VMUs, resource-limited vehicles offload the large-scale rendering tasks of updating VTs to the nearby edge servers in RSUs [2], [4], and VTs have to be correspondingly migrated from the current RSUs to other RSUs due to the limited RSU coverage and the mobility of vehicles [2]. To achieve reliable and efficient VT migration, VMUs purchase sufficient bandwidth resources from well-behaved RSUs [18].…”

Section: System Modelmentioning

confidence: 99%

“…Step 1 (Send VT migration requests): When VMUs travel on the road, the RSU cannot provide continuous metaverse services for VMUs due to the limited service coverage [2], [4]. Therefore, to ensure seamless immersive experiences for VMUs, VTs should be migrated from the current RSUs that they are deployed in (i.e., premigration RSUs) to other RSUs [2].…”

Section: Update Reputation Values Of Rsusmentioning

confidence: 99%

“…Virtual traveling specifically involves utilizing interactive technologies like Virtual Reality (VR) and Augmented Reality (AR) to fully immerse individuals in the metaverse's virtual world, allowing for a realistic travel experience. One application of VTs for smart driving is to forecast the collision risks as warning and safety instructions for VMUs [4]. To ensure real-time physical-virtual synchronization, vehicles and VMUs continuously update their VTs in virtual spaces by obtaining sensing data from surrounding environments through the use of smart sensors, such as real-time vehicle status and passenger bio-data [5].…”

Section: Introductionmentioning

confidence: 99%

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Blockchain‐assisted twin migration for vehicular metaverses: A game theory approach

Zhong,

Wen,

Zhang

et al. 2023

Trans Emerging Tel Tech

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As the fusion of automotive industry and metaverse, vehicular metaverses establish a bridge between the physical space and virtual space, providing intelligent transportation services through the integration of various technologies, such as extended reality and real‐time rendering technologies, to offer immersive metaverse services for vehicular metaverse users (VMUs). In vehicular metaverses, VMUs update vehicle twins (VTs) deployed in RoadSide Units (RSUs) to obtain metaverse services. However, due to the mobility of vehicles and the limited service coverage of RSUs, VT migration is necessary to ensure continuous immersive experiences for VMUs. This process requires RSUs to contribute resources for enabling efficient migration, which leads to a resource‐trading problem between RSUs and VMUs. Moreover, a single RSU cannot support large‐scale VT migration. To this end, we propose a blockchain‐assisted game approach framework for reliable VT migration in vehicular metaverses. Based on the subject logic model, we first calculate the reputation values of RSUs considering the freshness of interaction between RSUs and VMUs. Then, a coalition game based on the reputation values of RSUs is formulated, and RSU coalitions are formed to jointly provide bandwidth resources for reliable and large‐scale VT migration. Subsequently, the RSU coalition with the highest utility is selected. Finally, to incentivize VMUs to participate in VT migration, we propose a Stackelberg model between the selected coalition and VMUs. Numerical results demonstrate the reliability and effectiveness of the proposed schemes.

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Section: Vehiclementioning

confidence: 99%

Section: Vehiclementioning

confidence: 99%

Section: System Modelmentioning

confidence: 99%

Section: Update Reputation Values Of Rsusmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Blockchain‐assisted twin migration for vehicular metaverses: A game theory approach

Zhong,

Wen,

Zhang

et al. 2023

Trans Emerging Tel Tech

View full text Add to dashboard Cite

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Privacy Attacks and Defenses for Digital Twin Migrations in Vehicular Metaverses

Luo,

Wen,

Kang

et al. 2023

IEEE Network

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The gradual fusion of intelligent transportation systems with metaverse technologies is giving rise to vehicular metaverses, which blend virtual spaces with physical space. As indispensable components for vehicular metaverses, Vehicular Twins (VTs) are digital replicas of Vehicular Metaverse Users (VMUs) and facilitate customized metaverse services to VMUs. VTs are established and maintained in RoadSide Units (RSUs) with sufficient computing and storage resources. Due to the limited communication coverage of RSUs and the high mobility of VMUs, VTs need to be migrated among RSUs to ensure real-time and seamless services for VMUs. However, during VT migrations, physical-virtual synchronization and massive communications among VTs may cause identity and location privacy disclosures of VMUs and VTs. In this article, we study privacy issues and the corresponding defenses for VT migrations in vehicular metaverses. We first present four kinds of specific privacy attacks during VT migrations. Then, we propose a VMU-VT dual pseudonym scheme and a synchronous pseudonym change framework to defend against these attacks. Additionally, we evaluate average privacy entropy for pseudonym changes and optimize the number of pseudonym distribution based on inventory theory. Numerical results show that the average utility of VMUs under our proposed schemes is 33.8% higher than that under the equal distribution scheme, demonstrating the superiority of our schemes.

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Bi-directional Digital Twin and Edge Computing in the Metaverse

Cited by 2 publications

References 0 publications

Blockchain‐assisted twin migration for vehicular metaverses: A game theory approach

Blockchain‐assisted twin migration for vehicular metaverses: A game theory approach

Privacy Attacks and Defenses for Digital Twin Migrations in Vehicular Metaverses

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