Method and radio node for controlling change of communication mode

A radio node configured to control a change of communication mode between transmit mode and receive mode according to a Time Division Duplex scheme, the radio node comprising:

• at least two parallel branches and antennas for transmission and reception of radio signals through each respective one of the at least two parallel branches, wherein the branches are operable in first and second communication modes of said transmit mode and receive mode, and
• a control unit comprising:
• an obtaining unit adapted to obtain one or more indication signals generated by one or more of the at least two parallel branches to indicate that said first communication mode has been turned off,
• a logic unit adapted to determine whether said first communication mode has been turned off in all of the at least two parallel branches based on the obtained one or more indication signals, and
• an instructing unit adapted to instruct the at least two parallel branches to operate in the second communication mode,
• wherein when it is determined that said first communication mode has not been turned off in a faulty branch of said at least two parallel branches, the logic unit is further adapted to perform at least one of:
• disable the first communication mode in the faulty branch, and
• report the faulty branch to a supervision centre.