Abstract

KOBEL, Christian; BALUJA GARCIA, Walter  and  HABERMANN, Joachim. Sistema de gestión de recursos para mejorar la capacidad de transmisiones en redes malladas inalámbricas. Ing. Desarro. [online]. 2016, vol.34, n.2, pp.370-396. ISSN 0122-3461.  https://doi.org/10.14482/inde.33.2.6368.

With numerous active nodes in an 802.11-based wireless mesh network, operating on longer multi-hop routes, the total transmission capacity is limited and the overall network becomes unpredictable and less reliable. The presented work describes the next steps towards a more efficient resource management of a multi-radio node, in order to enhance the performance in this kind of networks. If non-overlapping channels are used for communication, the system enables an optimal usage of the available 802.11 spectrum. To manage bundles of multiple WLAN links between mesh neighbors, a modified node architecture and a novel middle-layer software module have been created. Hop-to-hop load balancing in a bundle is included in each node. In parallel, the inclusion of a distributed channel assignment protocol is foreseen. Packet scheduling is performed based on a set of pre-defined load balancing modes. The modes introduce awareness of current network conditions and cover a wide variety of requirements on mesh networks, from improved performance to robustness. Further inspiring technologies, like layer 2 forwarding and hop-to-hop priority queuing, have been tailored in the novel architecture. The achievement is a flexible platform that can be used for different purposes, ranging from a commercially oriented mesh backbone to spontaneously setting up wireless emergency networks. A set of simulator-driven measurements outlines the effectiveness of the multi-interface system.

Keywords : arquitectura de nodos; capacidad de transmisión; gestión de recursos; redes malladas inalámbricas.

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