Abstract
In wireless sensor networks, there are many constraints on electrical power and communication since sensor nodes have limited resources. Therefore, it is important to construct an effective communication route in terms of energy-efficiency and quality of communication. Many studies have been conducted to address this issue. In particular, controlling the transmission power of each node has been one of the hottest issues in recent years. Most conventional studies have assumed an environment in which radio signals transmitted by nodes propagate equally in all directions. However, this model cannot be applied to real environments due to several effects such as the presence of obstacles and antenna characteristics. In this paper, we propose a route construction method based on the measured characteristics of radio propagation in a real environment. Our method first measures the characteristics of radio propagation for all radio links. Second, the transmission power of each node and a communication route from the node to the sink node are determined based on the measured characteristics. In addition, we conduct experiments to verify that our methods can construct effective communication routes in terms of energy-efficiency and quality of communication.
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Notes
Although the transmission power of MICAz Mote can be set from 29 levels, the datasheet (CC2420 2.4 GHz IEEE 802.15.4/ZigBee-ready RF Transceiver. http://www.ti.com/ Accessed 30 September 2009)] only shows the specific information on 8 of them. In Table 1, the specific transmission powers which are not shown in the datasheet are estimated by using those shown in the datasheet.
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Acknowledgments
This research is partly supported by the Ministry of Internal Affairs and Communications of Japan under the Research and Development Program of ‘Ubiquitous Service Platform,’ Grant-in-Aid for Scientific Research on Priority Areas (18049050) and for Scientific Research (S) (21220002) of the Ministry of Education, Culture, Sports, Science and Technology, Japan.
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Nose, Y., Kanzaki, A., Hara, T. et al. A route construction based on measured characteristics of radio propagation in wireless sensor networks. J Ambient Intell Human Comput 1, 259–270 (2010). https://doi.org/10.1007/s12652-010-0020-4
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DOI: https://doi.org/10.1007/s12652-010-0020-4