Roberts, Dave, Aspin, Rob, Marshall, Damien, McLoone, Seamus, Delaney, Declan and Ward, Tomas E. (2008) Bounding Inconsistency Using a Novel Threshold Metric for Dead Reckoning Update Packet Generation. Simulation, 84 (5). pp. 239-256. ISSN 1741-3133
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Abstract
Human-to-human interaction across distributed applications requires that sufficient consistency be
maintained among participants in the face of network characteristics such as latency and limited
bandwidth. The level of inconsistency arising from the network is proportional to the network delay,
and thus a function of bandwidth consumption. Distributed simulation has often used a bandwidth
reduction technique known as dead reckoning that combines approximation and estimation in the
communication of entity movement to reduce network traffic, and thus improve consistency. However,
unless carefully tuned to application and network characteristics, such an approach can introduce
more inconsistency than it avoids. The key tuning metric is the distance threshold. This paper
questions the suitability of the standard distance threshold as a metric for use in the dead reckoning
scheme. Using a model relating entity path curvature and inconsistency, a major performance
related limitation of the distance threshold technique is highlighted. We then propose an alternative
time–space threshold criterion. The time–space threshold is demonstrated, through simulation,
to perform better for low curvature movement. However, it too has a limitation. Based on this, we
further propose a novel hybrid scheme. Through simulation and live trials, this scheme is shown to
perform well across a range of curvature values, and places bounds on both the spatial and absolute
inconsistency arising from dead reckoning.
Item Type: | Article |
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Keywords: | Bounding Inconsistency; Novel Threshold Metric; Dead Reckoning Update Packet Generation; |
Academic Unit: | Faculty of Science and Engineering > Electronic Engineering |
Item ID: | 9272 |
Identification Number: | 10.1177/0037549708092221 |
Depositing User: | Dr Tomas Ward |
Date Deposited: | 22 Feb 2018 15:29 |
Journal or Publication Title: | Simulation |
Publisher: | Sage Publications |
Refereed: | Yes |
Related URLs: | |
URI: | https://mu.eprints-hosting.org/id/eprint/9272 |
Use Licence: | This item is available under a Creative Commons Attribution Non Commercial Share Alike Licence (CC BY-NC-SA). Details of this licence are available here |
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