Consistency aware update schedule in multi-server Distributed Virtual Environments

Li, Yusen; Cai, Wentong

doi:10.4108/icst.simutools2010.8669

Cited by 2 publications

(2 citation statements)

References 13 publications

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“…In [22], an update scheme is proposed to construct a graph to represent the communication delay between any two users, and then derive an optimal interval for sending update messages based on Markov chains and the properties of the fundamental matrix. In [20], a method is proposed to maintain the time-space consistency of users and their replicas by adapting each server's update schedule.…”

Section: Synchronization and View Consistencymentioning

confidence: 99%

On View Consistency in Multi-Server Distributed Virtual Environments

Lau

et al. 2014

IEEE Trans. Visual. Comput. Graphics

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A distributed virtual environment (DVE) is a shared virtual environment (VE) that allows remote users to interact with each other through networks. DVEs are becoming very popular due to some prominent applications, such as online games and virtual worlds. To support a large number of users, a multi-server DVE architecture may be adopted, with each server managing a subset of users. However, there are two critical problems with this architecture: view inconsistency caused by delays and server overloading caused by uneven distribution of users. While the first problem affects users' perception of the VE and causes user disputes, the second problem affects the system response time. In this paper, we first show that the view inconsistency problem and the load balancing problem are conflicting objectives. We then propose an efficient joint optimization framework to address both problems. Our results show that the proposed method can improve the view inconsistency problem significantly, which is important to the interactivity of DVE applications.

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Section: Synchronization and View Consistencymentioning

confidence: 99%

On View Consistency in Multi-Server Distributed Virtual Environments

Lau

et al. 2014

IEEE Trans. Visual. Comput. Graphics

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“…A replica of an avatar is defined as a replica without QoS if the time-space inconsistency between the replica and the primary copy of the avatar is larger than a predefined threshold. The number of replicas without QoS has been shown to be efficient in evaluating the overall inconsistency of a DVE system [59,71]. Based on this definition, the first updating problem is formulated as an integer programming problem which is to minimize the number of replicas without QoS.…”

Section: Aims Scope and Contributions Of This Thesismentioning

confidence: 99%

Consistency-aware scheduling and load balancing in multi-server distributed virtual environments

Li¹

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A distributed virtual environment (DVE) is a kind of distributed interactive application which allows a group of participants connected via a network to interact with a shared application state. DVEs have been widely used in many areas such as military training, collaborative design, e-learning and networked multiuser games. Zone-based multi-server DVEs (MSDVEs) have been shown to have good scalability to support a large population of users. The fundamental goal of a DVE is to create a consistent view of the virtual world among participants. However, resource saturations may occur at servers due to huge resource demand and imbalanced workload distribution. Foremost I would like to express my sincere gratitude to my supervisor Prof. Cai Wentong for his guidance, support, enthusiasm, and immense knowledge. He patiently provided the vision, encouragement and advice necessary for me to proceed through the doctorial program and complete my thesis. I gratefully acknowledge the scholarship towards my PhD from Nanyang Technological University. Also, I wish to thank my friends in PDCC and Singapore for giving me the laughter, joy, and support in the tough PhD life. I wish our friendship last forever. Last but not the least, I would like to thank my proud family, my parents, my elders, my brothers and my sisters for their infinite support throughout everything.

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Consistency aware update schedule in multi-server Distributed Virtual Environments

Cited by 2 publications

References 13 publications

On View Consistency in Multi-Server Distributed Virtual Environments

On View Consistency in Multi-Server Distributed Virtual Environments

Consistency-aware scheduling and load balancing in multi-server distributed virtual environments

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