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The Scientific World Journal
Volume 2014, Article ID 238682, 9 pages
http://dx.doi.org/10.1155/2014/238682
Research Article

Describing the Access Network by means of Router Buffer Modelling: A New Methodology

Communications Technology Group (GTC), Aragón Institute of Engeneering Research (I3A), Department of IEC, EINA, University of Zaragoza, Ada Byron Building, 50018 Zaragoza, Spain

Received 7 March 2014; Accepted 25 May 2014; Published 24 July 2014

Academic Editor: Zhongmei Zhou

Copyright © 2014 Luis Sequeira et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The behaviour of the routers’ buffer may affect the quality of service (QoS) of network services under certain conditions, since it may modify some traffic characteristics, as delay or jitter, and may also drop packets. As a consequence, the characterization of the buffer is interesting, especially when multimedia flows are transmitted and even more if they transport information with real-time requirements. This work presents a new methodology with the aim of determining the technical and functional characteristics of real buffers (i.e., behaviour, size, limits, and input and output rate) of a network path. It permits the characterization of intermediate buffers of different devices in a network path across the Internet.