A traffic aggregation and differentiation scheme for enhanced QoS in IEEE 802.11-based Wireless Mesh Networks

Authors:
R. Riggio;D. Miorandi;F. De Pellegrini;F. Granelli;I. Chlamtac
Affiliations:
Department of Electrical and Computer Engineering, University of Florida, 435 Engineering Building, P.O. Box 116130, Gainesville, FL 32611, USA and CREATE-NET, Via alla Cascata 56/C, 38100 Trento, ...;CREATE-NET, Via alla Cascata 56/C, 38100 Trento, Italy;CREATE-NET, Via alla Cascata 56/C, 38100 Trento, Italy;Department of Communication and Information Technologies, University of Trento, Via Sommarive 14, Trento, Italy;CREATE-NET, Via alla Cascata 56/C, 38100 Trento, Italy
Venue:
Computer Communications
Year:
2008

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Abstract

Wireless Mesh Networks are currently emerging as a promising paradigm for broadband ubiquitous Internet access. However, their distributed nature raises many challenges when facing the increasing demand for multimedia applications, which require a tight control over the system's available resources. In this paper, we address such issue by introducing a mechanism combining service differentiation and packet aggregation in IEEE 802.11-based WMNs. Our architecture does not require any modification to the IEEE 802.11 MAC and can be readily deployed exploiting off-the-shelf hardware. The proposed solution has been implemented as an extension to the MIT Roofnet platform. Measurements run over a WiFi testbed show a large gain in the voice capacity attained. The source code, released under the BSD License, is made available to the research community.