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Open Access

Reference Chaser Bandwidth Controller for Wireless QoS Mapping under Delay Constraints

EURASIP Journal on Wireless Communications and Networking20102010:961690

https://doi.org/10.1155/2010/961690

Received: 14 January 2010

Accepted: 11 October 2010

Published: 13 October 2010

Abstract

Telecommunications networks are composed of functional layers acting in cascade. Quality of Service (QoS) derives from the action of each layer that must assure a specific level of quality to the upper layer in terms of performance parameters (e.g., loss, delay, jitter of the packets). Appropriate algorithms are needed to compute the bandwidth necessary so to assure the requested QoS when information is transferred from one layer to the next one below. This paper proposes a scheme that adapts the bandwidth to be allocated to a buffer which conveys heterogeneous traffic (both concerning traffic sources and QoS requirements) in a layer-in-cascade model. The proposal is focused on delay constraints. The proposed algorithm is based only on measures and does not use closed-form expressions, a priori information about traffic statistical properties, and assumptions about buffer dimension. Simulation results show the reliability of the approach in comparison with other techniques at the state of the art, thus corroborating the application of the algorithm for a large set of operative situations, including fading conditions.

Keywords

Information SystemAssurePerformance ParameterSystem ApplicationSpecific Level

Publisher note

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Authors’ Affiliations

(1)
Department of Communications, Computer and Systems Science (DIST), University of Genoa, Genova, Italy

Copyright

© M. Marchese and M. Mongelli. 2010

This article is published under license to BioMed Central Ltd. 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.

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