Wireless device, server, index data providing method for wireless device, data providing method for server and wireless transmission system

A wireless device, a server, an index data providing method for the wireless device, a data providing method for the server and a wireless transmission system are provided. The storage stores a plurality of terminal data, each of the terminal data include an identification. The processor generates a bluetooth -broadcast signal according to each of the terminal data, and transmits each of the bluetooth broadcast signals within a plurality of time intervals respectively. After a user equipment receives a present bluetooth broadcast signal of the bluetooth signals, the user equipment transmits a service request message according to the present bluetooth broadcast signal, and receives a service datum from the server. The service datum is one of a plurality of service data stored in the server, which corresponds to the present bluetooth broadcast signal.