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Báo cáo hóa học: " Research Article Evaluation of Cross-Layer Rate-Aware Routing in a Wireless Mesh Network Test Bed"

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Research Article Evaluation of Cross-Layer Rate-Aware Routing in a Wireless Mesh Network Test Bed | Hindawi Publishing Corporation EURASIP Journal on Wireless Communications and Networking Volume 2007 Article ID 86510 10 pages doi 10.1155 2007 86510 Research Article Evaluation of Cross-Layer Rate-Aware Routing in a Wireless Mesh Network Test Bed L. Iannone K. Kabassanov and S. Fdida Laboratoire d Informatique de Paris 6 LIP6 Centre National de la Recherche Scientifique CNRS Universite Pierre et Marie Curie Paris VI 104 Avenue du President Kennedy 75016 Paris France Received 29 June 2006 Revised 20 October 2006 Accepted 27 November 2006 Recommended by Marco Conti Real deployments of wireless multihop networks by Internet service providers ISPs have been slowed down by their poor performance and unreliability. The research community has already proved that efficient cross-layer routing in particular rate-aware routing can significantly improve performances. Nevertheless this work has been done mainly by simulations seldom being implemented in a real environment. We present in this paper the results we obtained by comparing the performances of the traditional routing approach based on the hop-count metric and the cross-layer routing approach based on the transmission rate metric. These measurements have been done on the MeshDVNet test bed we deployed in our laboratory. As a routing protocol we used two versions with and without cross-layer metric of MeshDV a simple routing protocol expressly designed for wireless mesh networks WMNs . As our tests clearly show cross-layer rate-aware metric gives important improvements in both connectivity and throughput. Copyright 2007 L. Iannone 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. 1. INTRODUCTION Wireless mesh networks WMNs are an emerging two-tier architecture based on wireless multihop communications. A WMN is composed of wireless mesh routers WMRs .