Method for the location in interiors based on changes of power of emitters of wireless networks (Machine-translation by Google Translate, not legally binding)

摘要

The present invention consists of changing the emission power of the devices that create wireless networks, measuring these changes in a mobile device and, from these measurements, determining the position of the device inside the interior of a building or facility where they can not be use satellite tracking systems. The changes of power of emission of the signal can follow different patterns of variation: from a continuous wave to a square wave with only two levels of emission. The power changes are measured in mobile devices, since the signal strength of a network depends on the distance, the different measurements determine the position in relation to the transmitters using algorithms known in the state of the art. The invention improves the accuracy of the location with respect to the methods that use the signal intensity while keeping the power of the emitters fixed. (Machine-translation by Google Translate, not legally binding)