The utility model relates to a communication equipment among mobile communication system, its characterized in that, this communication equipment includes: communication unit communicatees data through communication link, and the controller, the electricity is couple to communication unit, this controller control communication unit comes to confirm through short distance communication link whether this communication equipment is close to another communication equipment, based on the sureness of whether being close to another communication equipment about this communication equipment make can with the first long -range communication link of network and with among another communication equipment's the short distance communication link one to communication link through making the ability receives data from the network.