Locales: supporting large multiuser virtual environments

Barrus, John; Waters, Richard C.; Anderson, David

doi:10.1109/38.544072

Cited by 121 publications

(78 citation statements)

References 5 publications

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“…The sender sends only one message (as in unicast) to a group, which is received by multiple receivers (as in broadcast) belonging to the group. There are numerous examples of distributed applications utilizing multicast [3], [6], [8], [10], [27].…”

Section: A Bandwidthmentioning

confidence: 99%

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Aspects of networking in multiplayer computer games

Smed

Kaukoranta

Hakonen³

2002

The Electronic Library

167

119

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Abstract-Distributed, real-time multiplayer computer games (MCGs) are in the vanguard of utilizing the networking possibilities. Although related research have been done in military simulations, virtual reality systems, and computer supported cooperative working, the suggested solutions diverge from the problems posed by MCGs. With this in mind, this paper provides a concise overview of four aspects affecting networking in MCGs. Firstly, networking resources (bandwidth, latency, and computational power) set the technical boundaries within which the MCG must operate. Secondly, distribution concepts encompass communication architectures (peer-to-peer, client/server, servernetwork), and both data and control architectures (centralized, distributed, replicated). Thirdly, scalability allows the MCG to adapt to the resource changes by parametrization. Finally, security aims at fighting back against cheating and vandalism, which are common in online gaming.

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Section: A Bandwidthmentioning

confidence: 99%

“…It has given birth to various experimental systems with the likes of DIVE [6], GreenSpace [7], Spline [8], Community Place [9], and MASSIVE [10]. While the military research focuses on diverse large-scale systems, DVEs are mainly designed for local use and support only a small number of participants.…”

Section: Introductionmentioning

confidence: 99%

Aspects of networking in multiplayer computer games

Smed

Kaukoranta

Hakonen³

2002

The Electronic Library

167

119

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“…The set of holes in f 0 might be critical features which designer 0 wants to hide from designer 1 . Then, all holes are removed from the original model, and the model in Figure 2-(b) is presented to designer 1 .…”

Section: Role-based Viewmentioning

confidence: 99%

“…Distributed Virtual Environments (DVEs) [1,5,7,11,15] have been developed for real-time interactions between distributed collaborators in a number of different domains. Immersive environments such as CAVE [4] have been developed which also support real-time interaction, but they do not necessarily support collaborative CAD.…”

Section: Collaborative Designmentioning

confidence: 99%

Role-Based Viewing for Secure Collaborative Modeling

Christopher¹,

Kim²,

Braude³

et al. 2003

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Information security and assurance are new frontiers for collaborative design. In this context, information assurance (IA) refers to methodologies to protect engineering information by ensuring its availability, confidentiality, integrity, non-repudiation, authentication, access control, etc. In collaborative design, IA techniques are needed to protect intellectual property, establish security privileges and create "need to know" protections on critical features. Aside from 3D watermarking, research on how to provide IA to distributed collaborative engineering teams is largely non-existent.This paper provides a framework for information assurance within collaborative design, based on a technique we call role-based viewing. Such role-based viewing is achieved through integration of multi-resolution geometry and security models. 3D models are geometrically partitioned, and the partitioning is used to create multi-resolution mesh hierarchies. Extracting a model suitable for access rights for individual actors within a collaborative design environment is driven by an elaborate access control mechanism.

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“…A simple example with 1D range query is depicted in figure 2.10. MASSIVE-3 [114] combined the standard design with the notion of locales [7] taken from the SPLINE [25] distributed virtual reality system. A locale defines its own co-ordinate system.…”

Section: Massively Multiplayer Online Gamesmentioning

confidence: 99%

Synchronised Range Queries

Suryanarayanan

Minson

Theodoropoulus

2009

2009 13th IEEE/ACM International Symposium on Distributed Simulation and Real Time Applications

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Computer simulations have been used more than ever before to embark on developing and understanding complex systems such as Multi-Agent Systems (MAS). MAS are complex, non-deterministic, data-centric behaviour and nature. Simulations play a key role for the designer of an agent based system to experiment and study the impact of different architectures, environment and agent behaviour. As MAS are increasingly used to solve larger and more complex problems, scalability becomes an important issue for the successful deployment. An emerging viable solution is adopting distributed simulation techniques in executing MAS models in parallel. One approach is to distribute the shared state (or environment) of a simulation model across available computing resources. Based on this approach, PDES-MAS (Parallel and Discrete Event Simulations for Multi-Agent System) framework is designed to execute large scale models such as MAS. It adopts PDES techniques to distribute and run parallel simulation of Multi-Agent Systems (MAS). Several challenges arise on executing MAS models on a distributed environment, of which one issue that requires focus is data access. Accessing data efficiently in a latency-sensitive and large scale network overlay is a vital requirement for the scalability of the system. Following PDES paradigm, it is also very important that events (accessing shared state) in a parallel and discrete event simulation system are processed in a non decreasing (logical) time stamp order. So, this thesis presents a notion of logical time synchronised range queries to access data and in particular within the PDES-MAS framework. To localise data access, this thesis also provides mechanisms to distribute shared state in an adaptive manner such that the distribution reflects access patterns of simulating nodes. The algorithms are evaluated within the implementation of PDES-MAS framework using various agent based simulation traces. ACKNOWLEDGEMENTS

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Locales: supporting large multiuser virtual environments

Cited by 121 publications

References 5 publications

Aspects of networking in multiplayer computer games

Aspects of networking in multiplayer computer games

Role-Based Viewing for Secure Collaborative Modeling

Synchronised Range Queries

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