Reciprocity-based transmission

A method for reciprocity-based transmission in a radio communication network, the method being performed in a wireless device and comprising:

• obtaining a channel estimation of receive, Rx, quantities of a set of Rx and transmit, Tx, distribution networks;
• obtaining a channel estimation of Rx quantities of a set of Rx distribution networks;
• and
• performing reciprocity-based transmission with utilization of the obtained channel estimation of Rx quantities of both the set of Rx and Tx distribution network and the set of Rx distribution network, whereby channel estimation of Rx quantities of more Rx distribution networks than Tx distribution networks are utilized for the reciprocity-based transmission, the Rx distribution network channel estimates being given larger weights than the Rx and Tx distribution network channel estimate weights.

A base station for reciprocity-based transmission in a radio communication network, the base station comprising:

• a processing circuitry;
• and
• a computer program product storing instructions that, when executed by the processing circuitry, causes the base station to:
• obtain a channel estimation of receive, Rx, quantities of a set of Rx and transmit, Tx, distribution networks;
• obtain a channel estimation of Rx quantities of a set of Rx distribution networks;
• and
• perform reciprocity-based transmission with utilization of the obtained channel estimation of Rx quantities of both the set of Rx and Tx distribution network and the set of Rx distribution network, whereby channel estimation of Rx quantities of more Rx distribution networks than Tx distribution networks are utilized for the reciprocity-based transmission, the Rx distribution network channel estimates being given larger weights than the Rx and Tx distribution network channel estimate weights.

A wireless device for reciprocity-based transmission in a radio communication network, the wireless device comprising:

• a processing circuitry;
• and
• a computer program product storing instructions that, when executed by the processing circuitry, causes the wireless device to:
• obtain a channel estimation of receive, Rx, quantities of a set of Rx and transmit, Tx, distribution networks;
• obtain a channel estimation of Rx quantities of a set of Rx distribution networks;
• and
• perform reciprocity-based transmission with utilization of the obtained channel estimation of Rx quantities of both the set of Rx and Tx distribution network and the set of Rx distribution network, whereby channel estimation of Rx quantities of more Rx distribution networks than Tx distribution networks are utilized for the reciprocity-based transmission, the Rx distribution network channel estimates being given larger weights than Rx and Tx distribution network channel estimate weights.