A Sensor Positioning Scheme in Irregular Wireless Sensor Networks
In wireless sensor networks, the positions of sensor nodes are very important for many applications. If each sensor node provides information with less positioning error, the positioning information will be reliable. One of the most representative positio
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Abstract In wireless sensor networks, the positions of sensor nodes are very important for many applications. If each sensor node provides information with less positioning error, the positioning information will be reliable. One of the most representative positioning schemes, called DV-HOP is low for positioning accuracy in irregular network environments. Moreover, because it requires many anchor nodes for high accuracy, it is expensive to construct the network. To overcome such problems, we propose a novel sensor positioning scheme in irregular wireless sensor networks. By doing so, the proposed scheme ensures the high accuracy of sensor positioning in non-uniform networks. To show the superiority of our proposed scheme, we compare it with the existing scheme. Our experimental results show that our proposed scheme improves about 36 % sensor positioning accuracy over the existing scheme on average even in irregular sensor networks. H. Park D. Hwang J. Park School of Information and Communication Engineering, Chungbuk National University, 410 Seongbong-ro, Heungdeok-gu, Cheongju, Chungbuk, South Korea e-mail: [email protected] D. Hwang e-mail: [email protected] J. Park e-mail: [email protected] D. Seong BOAS Electronics Inc., Industrial Technology Research Park, 52 Naesudong-ro, Heungdeok-gu, Cheongju, South Korea e-mail: [email protected] J. Yoo (&) School of Information and Communication Engineering, Chungbuk National University and CBITRC, 52 Naesudong-ro, Heungdeok-gu, Cheongju, South Korea e-mail: [email protected]
S.-S. Yeo et al. (eds.), Computer Science and its Applications, Lecture Notes in Electrical Engineering 203, DOI: 10.1007/978-94-007-5699-1_80, Springer Science+Business Media Dordrecht 2012
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Keywords Wireless sensor network
H. Park et al.
Positioning Central limit theorem
1 Introduction The wireless sensor network that is one of basic technologies to detect the event and to control the external human environment in the ubiquitous environment has been vigorously studied. The ad-hoc wireless sensor network is constructed autonomously and collects the diverse environment information through the communication between sensor nodes. The sink node receives the sensing values from the sensor nodes in the sensing area and transmits them to the user. The collected information is used for diverse purposes such as observation of wildlife’s habitat, military affair, fire detection, environmental monitoring, medical service, and U-city [1]. In the sensor network, the positioning technology is one of the most required and basic technologies. In the positioning scheme using the wireless devices, every equipment is generally carrying the Global Positioning System (GPS) in order to collect the positioning information [2]. But it causes the problems such as excessive energy consumption due to GPS modules and high costs for their construction in the large-scale of the sensor network environment. Therefore, the positioning schemes to reduce the energy consumption in the sensor networ
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