The Insights of DV-Based Localization Algorithms in the Wireless Sensor Networks with Duty-Cycled and Radio Irregular Sensors

—Location information of nodes is the basis for many applications in wireless sensor networks (WSNs). However, most previous localization methods make the unrealistic assumption: (i) all nodes in WSN are always awake and (ii) the radio range of nodes is an ideal circle. This overlooks the common scenario that sensor nodes are duty-cycled to save energy and the radio range of nodes is irregular. In this paper we revisit the Distance-Vector-based (DV-based) positioning algorithms, particularly, Hop-Count-Ratio based Localization (HCRL) algorithm and investigate the following problems: (i) How is the relationship between the number of sleeping neighbor sensor nodes and the localization accuracy and (ii) How is the relationship between the degree of irregularity (DOI, which is a parameter of radio range irregularity) and the localization accuracy. We conduct a large number of experiments in WSNs simulator NetTopo, and find that the parameters: the number of waking nodes, DOI, anchor nod...

• Type: Journal
• Year: 2011
• Where: ICC
• Authors: Yuanfang Chen, Lei Shu, Mingchu Li, Ziqi Fan, Lei Wang 0006, Takahiro Hara
• Keywords: Anchor Node, Communications, ICC 2011, Localization Accuracy, Wireless Sensor Networks