Roberts, Dave and Aspin, Rob and Marshall, Damien and McLoone, Seamus and 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

Preview

Download (886kB) | Preview

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
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:	https://doi.org/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
URI:	Publisher
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

Repository Staff Only(login required)

Item control page

Downloads

Origin of downloads