Title :
An improved DV-Hop algorithm for anisotropic wireless sensor network
Author :
Qiaohe Yang ; Huichang Shi
Author_Institution :
Key Lab. of Special Fiber Opt. & Opt. Access Networks, Shanghai Univ., Shanghai, China
Abstract :
The localization of DV-Hop localization algorithm is not so well in anisotropic wireless sensor network. The beacon nodes that closed to one line or the beacon nodes which hop distance from the unknown node under localizing is great will reduce the localization accuracy of DV-Hop localization algorithm. An improved algorithm has been raised in this paper in order to solve the above problems. Fix the nearest beacon node to the unknown node under localizing and discard the beacon nodes combination which DC value is less than 0.15. Weighted value which related to hop distance is add to appropriate beacon nodes combination. It is shown in simulation result that the localization accuracy of IDV-Hop algorithm is improved at least 16% when compared to DV-Hop algorithm in a typical anisotropic wireless sensor network raised by this paper. And the localization coverage has also been improved a little.
Keywords :
sensor placement; wireless sensor networks; DC value; DV-Hop localization algorithm; IDV-Hop algorithm; anisotropic wireless sensor network; beacon nodes; hop distance; improved DV-Hop algorithm; localization accuracy; localization coverage; weighted value; Anisotropic wireless sensor network; Collineation degree; Hop distance; Localization coverage; Localization error;
Conference_Titel :
Wireless Mobile and Computing (CCWMC 2011), IET International Communication Conference on
Conference_Location :
Shanghai
DOI :
10.1049/cp.2011.0942
