A method of gathering probe data with smartphones for telematics services in urban areas

Abstract

Smartphones are widely used and have many applications that are free or at a low cost. Therefore, smartphones are widely used as telematics terminals and on-vehicle information devices. Moreover, there are many Wi-Fi offloading areas for mobile computing. However, it is difficult to communicate for a long period with the servers from vehicles with Wi-Fi offloading areas. Therefore, the compression of probe data is very important. In this paper, we show a model for probe data and propose a compression method for probe data that is different from general compression tools. In addition, we show the results of our evaluation of this proposed method.