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Journal of Computer Networks and Communications - Volume 2015 2015, Article ID 898365, 13 pages -

Research Article

Departamento de Telecomunicaciones y Telemática, Instituto Superior Politécnico José Antonio Echeverría ISPJAE, Calle 114, No. 11901, e-Ciclovía y Rotonda, Marianao 19390, La Habana, Cuba

Department for ICT, Electrical Engineering & Mechatronics, THM University of Applied Sciences, Wilhelm-Leuschner Straße 13, 61169 Friedberg, Germany

Received 19 March 2015; Accepted 1 June 2015

Academic Editor: Liansheng Tan

Copyright © 2015 Christian Köbel 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.


802.11-based wireless mesh networks WMNs as last mile solutions frequently become bottlenecks in the overall Internet communication structure. The lack of end-to-end capacity on routes also affects vertical traffic coming from or flowing towards external networks, such as the Internet. The presented approach aims to increase the overall network performance by exploiting channel diversity and to additionally favor vertical traffic. To achieve this, first we propose a general system that modifies an existing mesh node architecture, in order to prepare a more efficient resource management and to enhance the restricted transmission capacity in standard WMNs. The parallel use of nonoverlapping channels, based on a multiradio node, marks the starting point. The system treats aspects of channel assignment, traffic analysis, and fast layer 2 forwarding. Then, the impact of a novel Multihop Radio Resource Management process is discussed as a relevant component of this new system architecture. The process combines per-hop priority queuing and load balancing in a novel way. It was designed, developed, and evaluated in the presented paper, resulting in the fact that capacity in WMNs was significantly increased, Quality-of-Service parameters were improved, and more efficient use of multiple radios could be reached. The proposed process was validated using a simulation approach.

Autor: Christian Köbel, Walter Baluja García, and Joachim Habermann



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