|題名: ||Direction-based localization schemes for wireless sensor networks|
|作者: ||Shih, Kuei-Ping;Wang, Sheng-Shih|
|上傳時間: ||2010-01-11 12:57:06 (UTC+8)|
|摘要: ||Localization is an important issue in wireless sensor networks (WSNs). Several applications in WSNs can tolerate the diverse levels of accuracy in geographic information such as physical location. Besides, direction information is sufficient for numerous applications in WSNs. Thus, the paper develops a direction-based localization scheme, DLS, in which a node can be aware of its relative direction to a sink rather than its physical absolute location without requiring additional equipments. DLS not only takes the spatial locality property into account, but also exploits the anchor deployment strategy to benefit sensor direction learning. Additionally, DLS can more precisely position sensors around the boundaries with the aid of the dual-direction coordinate system. Experimental results validate the practicability of DLS and show that DLS is able to achieve well accurate direction estimates.|
Location awareness is an attractive research issue in the wireless sensor network (WSN). However, such information may be unavailable due to the constraints in energy, computation, or terrain, and several applications can tolerant the diverse level of accuracy in such geographic information. Thus, this paper presents a direction-based localization scheme, DLS, for each sensor node to determine its direction rather than its absolute location. DLS not only uses the anchor deployment strategy to benefit sensor direction learning, but also employs the dual-direction coordination system to precisely position the sensors close to the boundaries. We evaluate DLS via simulations in terms of various direction numbers, node numbers, and radio ranges. Experimental results validate the practicability of DLS, and show that DLS can effectively achieve direction estimation.
|關聯: ||第十一屆行動計算研討會暨國科會行動計算計劃研究成果發表會論文集=Proceedings of the 11th Mobile Computing Workshop，頁7|