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Latency (engineering)

About: Latency (engineering) is a research topic. Over the lifetime, 7278 publications have been published within this topic receiving 115409 citations. The topic is also known as: lag.


Papers
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Journal ArticleDOI
TL;DR: This letter investigates the problem of ultra-reliable and low-latency communication in millimeter wave-enabled massive multiple-input multiple-output networks using the Lyapunov technique, whereby a utility-delay control approach is proposed, which adapts to channel variations and queue dynamics.
Abstract: Ultra-reliability and low latency are two key components in 5G networks. In this letter, we investigate the problem of ultra-reliable and low-latency communication in millimeter wave-enabled massive multiple-input multiple-output networks. The problem is cast as a network utility maximization subject to probabilistic latency and reliability constraints. To solve this problem, we resort to the Lyapunov technique, whereby a utility-delay control approach is proposed, which adapts to channel variations and queue dynamics. Numerical results demonstrate that our proposed approach ensures reliable communication with a guaranteed probability of 99.99%, and reduces latency by 28.41% and 77.11% as compared to baselines with and without probabilistic latency constraints, respectively.

107 citations

Patent
30 Apr 2007
TL;DR: In this article, various embodiments of a method for signal adjustment through control of latency are disclosed. But the authors focus on the control of the latency and do not consider the latency itself.
Abstract: Various embodiments of a method for signal adjustment through control of latency are disclosed.

106 citations

Journal ArticleDOI
TL;DR: Three approaches for assessing prolonged induction and latency periods in occupational epidemiology studies of cancer and other delayed effects of exposure are illustrated with an analysis of lung cancer mortality among a cohort of workers from an asbestos textile plant.
Abstract: Allowance for prolonged disease induction and latency times is an important consideration in occupational epidemiology studies of cancer and other delayed effects of exposure. Two useful approaches for assessing prolonged induction and latency periods are (1) exposure lagging and (2) considering exposures only within moving time windows. The exposure weighting scheme proposed by Jahr2 to assess exposure burdens is another method that accounts for induction and latency, although not explicitly. These three approaches, which are shown to be special cases of exposure weighting, are illustrated with an analysis of lung cancer mortality among a cohort of workers from an asbestos textile plant.

106 citations

Proceedings ArticleDOI
26 May 2014
TL;DR: This paper introduces an elastic scaling system, which optimizes the utilization under certain latency constraints defined by a service level agreement (SLA), and builds a latency-aware elastic operator placement algorithm, which minimizes the number of latency violations.
Abstract: Elastic scaling allows a data stream processing system to react to a dynamically changing query or event workload by automatically scaling in or out. Thereby, both unpredictable load peaks as well as underload situations can be handled. However, each scaling decision comes with a latency penalty due to the required operator movements. Therefore, in practice an elastic system might be able to improve the system utilization, however it is not able to provide latency guarantees defined by a service level agreement (SLA).In this paper we introduce an elastic scaling system, which optimizes the utilization under certain latency constraints defined by a SLA. Specifically, we present a model, which estimates the latency spike created by a set of operator movements. We use this model to built a latency-aware elastic operator placement algorithm, which minimizes the number of latency violations. We show that our solution is able to reduce the 90th percentile of the end to end latency by up to 30% and reduce the number of latency violations by 50%. The achieved system utilization for our approach is comparable to a scaling strategy, which does not use latency as optimization target.

106 citations

Proceedings ArticleDOI
27 Oct 2008
TL;DR: A new method for measuring latency using a standard video camera that is simple to configure, sensitive and rapid to use, and can determine latency changes significantly less than the frame rate of the camera.
Abstract: One of the critical determinants of the effectiveness and usability of interactive graphics simulations is the latency with which visual updates can be made based on input from interaction devices. High latency can diminish performance and can lead to simulator sickness. We demonstrate a new method for measuring latency using a standard video camera. The method is simple to configure, sensitive and rapid to use. This is in contrast to previous methods which required specialized equipment, were laborious or could only determine gross changes in latency. We attach a tracker to a pendulum and move a simulated image on the screen using the tracker positions. We video both the pendulum and simulated image together, and fit two sine curves, one to centre of motion of pendulum and one to the centre of motion of the simulated image. From the phase difference between these two sine curves we can determine latency changes significantly less than the frame rate of the camera. We demonstrate the method by comparing the latency of a two different systems for a CAVE™-like display.

106 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
20222
2021485
2020529
2019533
2018500
2017405