tailieunhanh - Báo cáo hóa học: " Research Article Wireless Sensor Networks: Performance Analysis in Indoor Scenarios"

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 Wireless Sensor Networks: Performance Analysis in Indoor Scenarios | Hindawi Publishing Corporation EURASIP Journal on Wireless Communications and Networking Volume 2007 Article ID 81864 14 pages doi 2007 81864 Research Article Wireless Sensor Networks Performance Analysis in Indoor Scenarios G. Ferrari P. Medagliani S. Di Piazza and M. Martalo Wireless Ad-Hoc and Sensor Networks WASN Laboratory Department of Information Engineering University of Parma 43100 Parma Italy Received 1 July 2006 Revised 8 December 2006 Accepted 2 January 2007 Recommended by Marco Conti We evaluate the performance of realistic wireless sensor networks in indoor scenarios. Most of the considered networks are formed by nodes using the Zigbee communication protocol. For comparison we also analyze networks based on the proprietary standard Z-Wave. Two main groups of network scenarios are proposed i scenarios with direct transmissions between the remote nodes and the network coordinator and ii scenarios with routers which relay the packets between the remote nodes and the coordinator. The sensor networks of interest are evaluated considering different performance metrics. In particular we show how the received signal strength indication RSSI behaves in the considered scenarios. Then the network behavior is characterized in terms of end-to-end delay and throughput. In order to confirm the experiments analytical and simulation results are also derived. Copyright 2007 G. Ferrari 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 Sensor networks have been a fertile research area during the last years 1 for military applications for example remote monitoring surveillance of reserved areas and so forth. In a war scenario in fact cables maybe damaged either by bombs or by enemies and therefore wireless technologies have been exploited in order to make the networks more robust .

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