Wireless communication system having a plurality of transmitting parts one of which is selectively used

A wireless communication system comprising:

• a data sending unit;
• and
• a data processing unit remote from said data sending unit, said data processing unit including
• a plurality of wireless data communication units each of which includes a wireless data receiving element configured to receive data transmitted by wireless communication from said data sending unit, said wireless data communication units being oriented to receive data transmitted from a plurality of different angle ranges with respect to a directivity of emissions from said data sending unit, and
• an angle selecting mechanism configured to exclusively select one of said plurality of wireless data communication units as a selected wireless data communication unit based on an angle range in which said data sending unit is located based on a selection command provided from said data sending means, wherein
• said data processing unit being configured to establish an exclusive bi-directional wireless communication channel in which said data processing unit and said data sending unit perform bi-directional wireless communication through said selected wireless data communication unit that was selected by the data processing unit.