Optimized Link State Routing-based Localization for Dense Irregular Sensor Networks
نویسندگان
چکیده
Sensor localization obtained by estimating node positions is an essential technique for wireless sensor networks. Anchorfree localization (AFL) can estimate node positions without anchor nodes. However AFL does not work in an irregular networks. In this paper, we present an optimized link state routing (OLSR) -based localization (ROULA) that achieves desirable performance in dense irregular sensor networks. ROULA is compatible with OLSR protocol and is suitable for dense sensor networks. In addition, ROULA requires less computational complexity except for a sink node merging local coordinates. We present characteristics of the multipoint relay (MPR) selection and the farthest 2-hop node selection used in ROULA and describe how these node selections contribute to reducing the distance error for the localization scheme without ranging devices. Using a simulation, we evaluated the performance of ROULA and found that it was effective in dense irregular sensor networks.
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