The invention provides a
positioning system of an indoor
mobile device. The
positioning system comprises three base stations, a mobile terminal, a
signal processing module, a
wireless transmitting module and a background
server. The three base stations are used for periodically sending
Bluetooth signals in a
Bluetooth wireless transmission mode, and the
Bluetooth signals comprise broadcast packets of mark information of the base stations and
signal intensities. The mobile terminal comprises a receiving module, wherein the receiving module is used for receiving the Bluetooth signals and determining the mark information of the base stations and the
signal intensities according to the content of the broadcast packets. The
signal processing module is used for calculating the distances between the three base stations and the mobile terminal according to the signal intensities of the three base stations and determining position information of the mobile terminal according to the three-point positioning
algorithm. The
wireless transmitting module is used for transmitting the position information to the background
server through a wireless communication network. The background
server is used for selectively pushing
service information to the mobile terminal according to information of the distances between the mobile terminal and the base stations. After accurate positioning is carried out, data can be accurately pushed, and therefore various kinds of applications such as position marketing can be achieved.