000032463 001__ 32463
000032463 005__ 20170327111910.0
000032463 0247_ $$2doi$$a10.3837/tiis.2014.09.012
000032463 0248_ $$2sideral$$a87454
000032463 037__ $$aART-2014-87454
000032463 041__ $$aeng
000032463 100__ $$aSequeira, Luis
000032463 245__ $$aThe Effect of the Buffer Size in QoS for Multimedia and bursty Traffic: When an Upgrade Becomes a Downgrade
000032463 260__ $$c2014
000032463 5060_ $$aAccess copy available to the general public$$fUnrestricted
000032463 5203_ $$aThis work presents an analysis of the buffer features of an access router, especially the size, the impact on delay and the packet loss rate. In particular, we study how these features can affect the Quality of Service (QoS) of multimedia applications when generating traffic bursts in local networks. First, we show how in a typical SME (Small and Medium Enterprise) network in which several multimedia flows (VoIP, videoconferencing and video surveillance) share access, the upgrade of the bandwidth of the internal network may cause the appearance of a significant amount of packet loss caused by buffer overflow.
Secondly, the study shows that the bursty nature of the traffic in some applications traffic (video surveillance) may impair their QoS and that of other services (VoIP and videoconferencing), especially when a certain number of bursts overlap. Various tests have been developed with the aim of characterizing the problems that may appear when network capacity is increased in these scenarios. In some cases, especially when applications generating bursty traffic are present, increasing the network speed may lead to a deterioration in the quality. It has been found that the cause of this quality degradation is buffer overflow, which depends on the bandwidth relationship between the access and the internal networks. Besides, it has been necessary to describe the packet loss distribution by means of a histogram since, although most of the communications present good QoS results, a few of them have worse outcomes. Finally, in order to complete the study we present the MOS results for VoIP calculated from the delay and packet loss rate.
000032463 536__ $$9info:eu-repo/grantAgreement/ES/MICINN/TIN2010-17298
000032463 540__ $$9info:eu-repo/semantics/openAccess$$aby$$uhttp://creativecommons.org/licenses/by/3.0/es/
000032463 590__ $$a0.561$$b2014
000032463 591__ $$aCOMPUTER SCIENCE, INFORMATION SYSTEMS$$b118 / 137 = 0.861$$c2014$$dQ4$$eT3
000032463 591__ $$aTELECOMMUNICATIONS$$b65 / 76 = 0.855$$c2014$$dQ4$$eT3
000032463 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000032463 700__ $$0(orcid)0000-0002-5237-0447$$aFernandez-Navajas, Julian$$uUniversidad de Zaragoza
000032463 700__ $$0(orcid)0000-0002-6977-6363$$aSaldana, Jose
000032463 7102_ $$15008$$2560$$aUniversidad de Zaragoza$$bDepartamento de Ingeniería Electrónica y Comunicaciones$$cIngenieria Telematica
000032463 773__ $$g8 , 9 (2014), 3159-3176$$pKSII Transactions on Internet and Information Systems$$tKSII Transactions on Internet and Information Systems$$x1976-7277
000032463 8564_ $$s1133795$$uhttp://zaguan.unizar.es/record/32463/files/texto_completo.pdf$$yVersión publicada
000032463 8564_ $$s84885$$uhttp://zaguan.unizar.es/record/32463/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000032463 909CO $$ooai:zaguan.unizar.es:32463$$particulos$$pdriver
000032463 951__ $$a2015-11-19-08:36:44
000032463 980__ $$aARTICLE