Wireless transmitting/receiving system, wireless receiving device and wireless transmitting/receiving method

A wireless receiving device disposed with respect to an entry/exit boundary, the wireless receiving device cooperating with a transmitter, the transmitter being disposed on a target object, the transmitter transmitting a wireless signal, the wireless receiving device comprising:

• a first directional receiver receiving the wireless signal and generating a first received signal strength indication;
• a camera capturing an image of the entry/exit boundary;
• a storage device storing a mapping table of target object location and received signal strength;
• and
• a processor electrically connected to the storage device, the processor determining a location of the target object and a moving direction of the target object with respect to the entry/exit boundary according to the image and the mapping table of target object location and received signal strength.

A wireless transmitting/receiving method comprising steps of:

• transmitting a wireless signal by a transmitter, wherein the transmitter is disposed on a target object;
• receiving the wireless signal and generating a first received signal strength indication by a first directional receiver, wherein the first directional receiver is disposed with respect to an entry/exit boundary;
• capturing an image of the entry/exit boundary by a camera;
• and
• determining a location of the target object and a moving direction of the target object with respect to the entry/exit boundary according to the image and a mapping table of target object location and received signal strength by a processor.