Precoding in telecommunication network

A telecommunication network that compensates for interference effects, in particular a time division duplex cooperating telecommunication network, the telecommunication network comprising:

• at least one processor and at least one memory including a computer program code, wherein the at least one memory and the computer program code are configured, with the at least one processor, to cause the telecommunication network to perform:
• determining at least one of a first channel state information between a first base station and a second base station, and a second channel state information between a first user equipment and a second user equipment, wherein the first base station and the second base station are adapted to serve the first user equipment and the second user equipment in a cooperative manner, and which are settable in an operational state, in which the first base station is in a downlink mode and the second base station is in an uplink mode,
• encoding data signals based on the first channel state information and/or on the second channel state information;
• transmitting the encoded data signals by the first base station and/or by the second base station;
• and
• transmitting the second channel state information to the first base station and/or to the second base station, wherein the second channel state information is only transmitted to the first base station and/or to the second base station if a data retransmission is required;
• wherein the data retransmission is carried out with a first retransmission data unit, which is transmitted during a first phase of the telecommunication network, during which both the first base station and the second base station are in a downlink mode, and/or with a second retransmission data unit, which is transmitted during a second phase of the telecommunication network, during which the first base station is still in the downlink mode and the second base station is already in an uplink mode.