Low complexity floor localization algorithm for mobile phone

Mobile phone has played an important role in daily life. Many applications on mobile phone can provide location service to user. A GPS sensor provides highly accurate localization system in outdoor environment but low accuracy over an indoor scenario because obstacles and mainly infrastructure of building block a GPS signal from GPS satellites. Moreover, GPS cannot determine a current floor that mobile phone is located on. Many indoor localization approaches have been proposed to address this problem. The approaches require back-end servers, which have high cost of hardware, software and maintenances to support localization processing. In this paper, we propose a low complexity floor localization algorithm. Our floor localization can be done on mobile phone and does not need any support from back-end server. The algorithm uses Wi-Fi access points that the mobile phone can detect as an input to determine current floor of the mobile phone. In addition, our proposed floor localization algorithm provides up to 90.83% of accuracy.