Patent ID: 8923111

Claim:
A wireless transmission method of transmitting and receiving a signal between wireless transmission devices opposite to each other, the method comprising: dividing a first input signal by a first wireless transmission device; transmitting one divided first signal to a second wireless transmission device opposite to said first wireless transmission device; outputting the other divided first signal to a third wireless transmission device adjacent to said first wireless transmission device and further transmitting the other divided first signal via a fourth wireless transmission device opposite to said third wireless transmission device to said second wireless transmission device adjacent to said fourth wireless transmission device; combining the signals received respectively from said first and fourth wireless transmission devices and outputting the combined signal by said second wireless transmission device; dividing a second input signal by said second wireless transmission device; transmitting one branch second signal to said first wireless transmission device; transmitting the other branch second signal to said first wireless transmission device via said fourth and third wireless transmission devices; and combining the signals received respectively from said second and third wireless transmission devices and outputting the combined signal by said first wireless transmission device, wherein when an abnormal condition occurs in a wireless transmission path, a wireless transmission device among the wireless transmission devices, or a connection between the wireless transmission devices, the abnormal wireless transmission device and the abnormal wireless transmission path are disconnected from a system by performing port link-down control to continue signal transmission with normal wireless transmission devices, and wherein after detecting the abnormal condition, the first wireless transmission device stops the transmission of the one divided first signal abnormal signal and transmits a notification signal indicating the abnormal condition to the second wireless transmission device; and the second transmission device stops the transmission of the one branch second signal.