About: Precise packet delay measurement in an Ethernet network

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An Entity of Type : http://linked.opendata.cz/ontology/domain/vavai/Vysledek, within Data Space : linked.opendata.cz associated with source document(s)

Attributes	Values
rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
rdfs:seeAlso	http://dx.doi.org/10.1016/j.measurement.2014.03.020
Description	Node synchronization can be implemented in an Ethernet network using time protocols; e.g. IEEE 1588 [1]. Active network components like switches and routers influence the accuracy of synchronization because they affect a packet delay variation in the network. Therefore, the delay is not constant and, as well, the delay in one direction is not equal to the delay in the opposite direction. This paper presents a low-cost device that can measure the packet delay with high accuracy in both communication directions and, at the same time, calculate network parameters including a packet delay variation, path asymmetry and dependency of the delay in opposite directions. The measurements can be used for the estimation of synchronization accuracy within the tested network. Some network elements have an unexpectedly large variability of path delays and large asymmetry. This behavior can be measured directly and therefore it is possible to eliminate these devices from the network. The results can be also used for the manual calibration of end nodes. It is not recommended, however, as it is vulnerable to network topology changes. Node synchronization can be implemented in an Ethernet network using time protocols; e.g. IEEE 1588 [1]. Active network components like switches and routers influence the accuracy of synchronization because they affect a packet delay variation in the network. Therefore, the delay is not constant and, as well, the delay in one direction is not equal to the delay in the opposite direction. This paper presents a low-cost device that can measure the packet delay with high accuracy in both communication directions and, at the same time, calculate network parameters including a packet delay variation, path asymmetry and dependency of the delay in opposite directions. The measurements can be used for the estimation of synchronization accuracy within the tested network. Some network elements have an unexpectedly large variability of path delays and large asymmetry. This behavior can be measured directly and therefore it is possible to eliminate these devices from the network. The results can be also used for the manual calibration of end nodes. It is not recommended, however, as it is vulnerable to network topology changes. (en)
Title	Precise packet delay measurement in an Ethernet network Precise packet delay measurement in an Ethernet network (en)
skos:prefLabel	Precise packet delay measurement in an Ethernet network Precise packet delay measurement in an Ethernet network (en)
skos:notation	RIV/68407700:21230/14:00219454!RIV15-TA0-21230___
http://linked.open...avai/riv/aktivita	P
http://linked.open...avai/riv/aktivity	P(TA01010988)
http://linked.open...iv/cisloPeriodika	54
http://linked.open...vai/riv/dodaniDat	2015
http://linked.open...aciTvurceVysledku	Roztočil, Jaroslav Vigner, Vojtěch Breuer, Jan
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	České vysoké učení technické v Praze / Fakulta elektrotechnická
http://linked.open...dnocenehoVysledku	38683
http://linked.open...ai/riv/idVysledku	RIV/68407700:21230/14:00219454
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	IEEE 1588; Precise Time Protocol; Packet delay variation; Ethernet network (en)
http://linked.open.../riv/klicoveSlovo	IEEE 1588 Ethernet network Packet delay variation Precise Time Protocol
http://linked.open...odStatuVydavatele	NL - Nizozemsko
http://linked.open...ontrolniKodProRIV	[9EF4C42C2397]
http://linked.open...i/riv/nazevZdroje	Measurement
http://linked.open...in/vavai/riv/obor	JA
http://linked.open...ichTvurcuVysledku	3 (xsd:int)
http://linked.open...cetTvurcuVysledku	3 (xsd:int)
http://linked.open...vavai/riv/projekt	Timing synchronous distributed systems for data acquisition and process control
http://linked.open...UplatneniVysledku	2014
http://linked.open...v/svazekPeriodika	54
http://linked.open...iv/tvurceVysledku	Roztočil, Jaroslav Vigner, Vojtěch Breuer, Jan
http://linked.open...ain/vavai/riv/wos	000336613600024
issn	0263-2241
number of pages	7 (xsd:int)
http://bibframe.org/vocab/doi	10.1016/j.measurement.2014.03.020
http://localhost/t...ganizacniJednotka	21230

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