Positioning adapter, communication method, indoor positioning system and method

An indoor positioning system comprising:

• triggers;
• a positioning adapter;
• a smart device in communication with the positioning adapter;
• and
• a server in communication with the smart device;
• wherein each of the triggers is disposed at a fixed position in indoors and is configured to send out position information corresponding to the fixed position;
• the positioning adapter is configured to receive the position information transmitted from one of the triggers, and send the position information as well as identity information to the smart device that is in communication with the positioning adapter;
• the smart device is configured to receive the position information and the identity information transmitted from the positioning adapter, send the position information and the identity information to the server, obtain an indoor map from the server and display the position information at the indoor map;
• the server is configured to receive the position information and the identity information transmitted from the smart device, update the indoor map based on the position information and identity information with an updated indoor map obtained, and send the updated indoor map to the smart device;
• the updated indoor map includes the position information corresponding to the smart device.