Method and arrangement in a wireless communication network

A method in a base station for adapting its communication mode according to a communication mode of a relay node that is configured to communicate with the base station via a donor antenna over a first link and to communicate with a user equipment via a coverage antenna over a second link, the method comprising:

• receiving information concerning the communication mode of the relay node in a wireless transmission from the relay node, wherein the communication mode of the relay node includes full duplex mode if an isolation value exceeds a threshold level value and half duplex mode if the isolation value does not exceed the threshold level value, and the isolation value is based on a radio wave isolation between the donor antenna and the coverage antenna;
• and
• configuring the base station to communicate in full duplex mode with the relay node if the received information indicates that the communication mode of the relay node is full duplex mode, and to communicate in half duplex mode with the relay node if the received information indicates that the communication mode of the relay node is half duplex mode.

An arrangement in a base station for adapting its communication mode according to a communication mode of a relay node that is configured to communicate with the base station via a donor antenna over a first link and to communicate with a user equipment via a coverage antenna over a second link, the arrangement comprising:

• a receiver configured to receive information concerning a configured duplex mode of the relay node in a wireless transmission from the relay node, wherein the communication mode of the relay node includes full duplex mode if an isolation value exceeds a threshold level value and half duplex mode if the isolation value does not exceed the threshold level value, and the isolation value is based on a radio wave isolation between the donor antenna and the coverage antenna;
• and
• a configuration unit configured to configure the base station to communicate in full duplex mode with the relay node if the information indicates that the relay node is configured in full duplex mode, and to communicate in half duplex mode with the relay node if the received information indicates that the relay node is configured in half duplex mode.