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Delay metrics and delay characteristics: A study of four Swedish HSDPA+ and LTE networks
Karlstads universitet, Fakulteten för hälsa, natur- och teknikvetenskap (from 2013), Institutionen för matematik och datavetenskap (from 2013). (DISCO)ORCID-id: 0000-0003-3461-7079
Karlstads universitet, Fakulteten för hälsa, natur- och teknikvetenskap (from 2013), Institutionen för matematik och datavetenskap (from 2013). (DISCO)ORCID-id: 0000-0003-0368-9221
Karlstads universitet, Fakulteten för hälsa, natur- och teknikvetenskap (from 2013), Institutionen för matematik och datavetenskap (from 2013). (DISCO)ORCID-id: 0000-0001-7311-9334
2015 (engelsk)Inngår i: 2015 European Conference on Networks and Communications (EuCNC), IEEE, 2015, s. 234-238Konferansepaper, Publicerat paper (Fagfellevurdert)
Abstract [en]

Network delays and user perceived latencies are of major importance in many applications in cellular networks. Delays can be measured with multiple approaches and at different protocol layers. This work involves a detailed examination of several delay metrics from a network, transport, and application perspective. The study explores base delay as well as latency under load, capturing also the effect of buffering. The examination is based on a comprehensive active measurement campaign performed in the networks of four Swedish operators. The results show that the delay captured by different metrics can vary significantly, with delay captured from the TCP three-way-handshake and adaptive ping measurements giving the most consistent results for base network delay in our measurements. As expected, when background traffic is introduced measured delay increases by an order of magnitude due to buffering in the network, highlighting the importance of also capturing latency under load when describing network performance. Finally, using an analytic model of flow completion time, we show that well-selected network measurements can provide a good prediction of higher layer delay performance.

sted, utgiver, år, opplag, sider
IEEE, 2015. s. 234-238
Emneord [en]
Cellular networks, Delay metrics, HSDPA, LTE, 4G, Performance measurements, Completion time
HSV kategori
Forskningsprogram
Datavetenskap
Identifikatorer
URN: urn:nbn:se:kau:diva-37756DOI: 10.1109/EuCNC.2015.7194075ISI: 000380399400047ISBN: 978-1-4673-7359-3 (tryckt)OAI: oai:DiVA.org:kau-37756DiVA, id: diva2:848947
Konferanse
2015 European Conference on Networks and Communications (EuCNC), June 29 2015-July 2 2015, Paris, France
Prosjekter
HITS
Forskningsfinansiär
Knowledge Foundation, 20140037.SE (The Internet Infrastructure Foundation), IFv2014-0135Tilgjengelig fra: 2015-08-26 Laget: 2015-08-24 Sist oppdatert: 2019-11-10bibliografisk kontrollert

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