The invention relates to a communication system and a method. The present patent application is directed to a communication system 0 comprising a first station 1 with a first narrow beam antenna 31 and a second station 2 comprising a second narrow beam antenna 41 , wherein the first and second stations 1, 2 are adapted to establish a first communication path 7 a for wireless communication via said first and second narrow beam antennas 31, 41 , respectively. It is a disadvantage with such a communication system that communication via said first communication path might be disturbed by randomly appearing obstacles. In consequence, the data transmission rate is reduced. According to the present invention said first and second stations 1, 2 are adapted to automatically establish at least one alternative communication path 7 b, 7 c for wireless communication via said first and second narrow beam antennas 31, 41, said alternative communication path 7 b, 7 c being spatially different from said first communication path 7 a.