METHOD AND TRANSMISSION DEVICE FOR RECOGNIZING THE TRANSMIT MODE OF TRANSMISSION DEVICES CONNECTED TO POWER SUPPLY LINES

摘要

According to the invention, the transmission devices (UE) of the transmission system (US) transmit, during the transmit mode, information by using a number of carrier signals (ts) with a momentarily excessive level (ph) to the power supply line (EL). The number of carrier signals (ts) are momentarily transmitted with different carrier frequency ranges (f1..f5), and the sequence of the carrier frequency ranges (f1..f5) is predetermined. The increase in level and the predetermined frequency hopping enable the other transmission devices (UE) to clearly recognize a transmitting transmission device (UE) and to establish with certainty whether the power supply line (EL) is free.