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http://dx.doi.org/10.3745/KIPSTC.2009.16C.6.737

Adaptive Power Control based Efficient Localization Technique in Mobile Wireless Sensor Networks  

Lee, Joa-Hyoung (강원대학교 컴퓨터정보통신공학과)
Jung, In-Bum (강원대학교 컴퓨터정보통신공학전공)
Publication Information
The KIPS Transactions:PartC / v.16C, no.6, 2009 , pp. 737-746 More about this Journal
Abstract
Given the increased interest in ubiquitous computing, wireless sensor network has been researched widely. The localization service which provides the location information of mobile user, is one of important service provided by sensor network. Many methods to obtain the location information of mobile user have been proposed. However, these methods were developed for only one mobile user so that it is hard to extend for multiple mobile users. If multiple mobile users start the localization process concurrently, there could be interference of beacon or ultrasound that each mobile user transmits. In the paper, we propose APL(Adaptive Power Control based Resource Allocation Technique for Efficient Localization Technique), the localization technique for multiple mobile nodes based on adaptive power control in mobile wireless sensor networks. In APL, collision of localization between sensor nodes is prevented by forcing the mobile node to get the permission of localization from anchor nodes. For this, we use RTS(Ready To Send) packet type for localization initiation by mobile node and CTS(Clear To Send) packet type for localization grant by anchor node. NTS(Not To Send) packet type is used to reject localization by anchor node for interference avoidance and STS(Start To Send) for synchronization between 모anchor nodes. At last, the power level of sensor node is controled adaptively to minimize the affected area. The experimental result shows that the number of interference between nodes are increased in proportion to the number of mobile nodes and APL provides efficient localization.
Keywords
Sensor Network; Localization; Multiple Mobile Node; Interference; Avoidance;
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