Indoor positioning system and method thereof

An indoor positioning method for use in an indoor positioning system, wherein the indoor positioning system comprises a plurality of beacon devices, a mobile device, and a positioning server, and the plurality of beacon devices comprises a plurality of top beacon devices and a plurality of planar beacon devices, wherein each top beacon device is deployed on a ceiling of a corresponding primary region of an indoor space, and the planar beacon devices are deployed in the surroundings of each primary region, the method comprising:

• utilizing the mobile device to execute an indoor positioning application to receive a positioning signal from each beacon device and determine distance information between the mobile device and each beacon device;
• utilizing the positioning server to receive the distance information from the mobile device;
• utilizing the positioning server to determine a specific primary region in which the mobile device is located according to the distance information between the mobile device and the top beacon devices;
• utilizing the positioning server to determine a precise location in the specific primary region according to the distance information between the mobile device and the planar beacon devices corresponding to the specific primary region;
• and
• utilizing the positioning server to report the precise location to the mobile device, so that the indoor positioning application running on the mobile device illustrates the precise location of the mobile device on a plan view of the indoor space,
• wherein after the positioning sever has determined the precise location of the mobile device in the specific primary region, the method further comprises:
• if it is determined that the distances from the planar beacon devices corresponding to the specific primary region to the mobile device are equal, determining whether the distance from the planar beacon devices in the specific primary region to the mobile device is longer than the distance from the mobile device to the top beacon device corresponding to the specific primary region,
• if so, determining that the mobile device is located at the center of the specific primary region;
• if not, determining that the precise location of the mobile device is faulty.