Mobile Reference Based Localization Mechanism in Grid-Based Wireless Sensor Networks
Wireless sensor networks (WSNs) are based on monitoring or managing the sensing area by using the location information with sensor nodes. These sensor nodes are sometimes random deployed, so they have to be aware to their location before starting their ta
- PDF / 2,239,266 Bytes
- 11 Pages / 439.37 x 666.142 pts Page_size
- 44 Downloads / 153 Views
Abstract Wireless sensor networks (WSNs) are based on monitoring or managing the sensing area by using the location information with sensor nodes. These sensor nodes are sometimes random deployed, so they have to be aware to their location before starting their tasks. Most sensor nodes need hardware support or receive packets with location information to estimate their location, and this needs lots of time or costs, and may have a huge error. In this paper we present a localization mechanism in wireless sensor networks (MRN). This mechanism can cooperate with node localization algorithm and mobile reference node moving direction scheme. We use a mobile reference node with GPS to move to the whole environment, and we use RSSI and trilateration to estimate unknown nodes’ location. We can obtain more unknown nodes location by mobile reference node moving scheme, and will decreases the energy consumption and average location error.
Keywords Wireless sensor networks (WSN) Localization Mobile sensor node Received signal strength indicator (RSSI)
Introduction Recent years wireless sensor networks [1] are getting more convenient, and the applications or researches are become skillful. So in this paper we proposed a mechanism in wireless sensor networks localization. Y.-H. Wang (&) Y.-H. Lin H.-M. Chang Department of Computer Science and Information Engineering, Tamkang University, Tamsui, Taiwan, Republic of China e-mail: [email protected] Y.-H. Lin e-mail: [email protected] H.-M. Chang e-mail: [email protected]
Y.-M. Huang et al. (eds.), Advanced Technologies, Embedded and Multimedia for Human-centric Computing, Lecture Notes in Electrical Engineering 260, DOI: 10.1007/978-94-007-7262-5_104, Ó Springer Science+Business Media Dordrecht 2014
911
912
Y.-H. Wang et al.
In recent researches, we find out localization can be classified as range-based and range-free approaches. Range-free approaches do not assume the availability or validity of distance information and only rely on the connectivity measurements undetermined sensors to a number of seeds [1]. Having lower requirements on hardware, the accuracy and precision of range-free approaches are easily affected by the node densities and network conditions, which are often unacceptable for many WSN applications that demand precise localizations. Range-based approaches calculate node distances based on some measured quantity [2], whereas they usually require extra hardware support; thus, they are expensive in terms of manufacturing cost and energy consumption. And how to reduce the extra cost becomes an important task for us to find out. When the sensor node position is estimate, it would have a significant increase for the data transfer speed or other works need to do. In this paper we proposed a mechanism using a mobile reference node (MRN) with RSSI [6] and trilateration in wireless sensor networks localization to reduce energy consumption costs and reduce the location error. In section Related Work will introduce some range-based and range
Data Loading...
