Wireless device, a network node and methods therein for determining channel state measurements in a wireless communications network

A wireless device for determining channel state measurements in a wireless communications network, the wireless device is configured to:

• obtain at least two channel state measurements performed by the wireless device on measurement resources allocated for the at least two channel state measurements where at least one of the obtained at least two channel state measurements is a channel state measurement for channel estimation, and at least one of the obtained at least two channel state measurements is a channel state measurement for interference estimation,
• receive information indicating how the wireless device is to combine the obtained at least two channel state measurements into at least one combined channel state measurement where the received information indicates pre-coders and probability distributions for each of the at least one of the obtained at least two channel state measurements that is the channel state measurement for interference estimation, and
• calculate the at least one combined channel state measurement based on the received information and the obtained at least two channel state measurements, wherein the at least one combined channel state measurement is calculated by using the obtained at least two channel state measurements as input.

A method performed by a network node for enabling a wireless device to determine channel state measurements in a wireless communications network, the method comprising:

• determining information indicating how to combine at least two channel state measurements into at least one combined channel state measurement in the wireless device, wherein the at least two channel state measurements are obtained by the wireless device on measurement resources allocated by the network node for the at least two channel state measurements, the at least two channel state measurements are used to calculate the at least one combined channel state measurement, and at least one of the at least two channel state measurements is a channel state measurement for channel estimation, and at least one of the at least two channel state measurements is a channel state measurement for interference estimation, wherein the determining comprises determining pre-coders and probability distributions for each of the at least one of the at least two channel state measurements that is the channel state measurement for interference estimation;
• and
• transmitting the determined information to the wireless device in the wireless communications network.

A network node for enabling a wireless device to determine channel state measurements in a wireless communications network, the network node is configured to:

• determine information indicating how to combine at least two channel state measurements into at least one combined channel state measurement in the wireless device, wherein the at least two channel state measurements are obtained by the wireless device on measurement resources allocated by the network node for the at least two channel state measurements, the at least two channel state measurements are used to calculate the at least one combined channel state measurement, and at least one of the at least two channel state measurements is a channel state measurement for channel estimation, and at least one of the at least two channel state measurements is a channel state measurement for interference estimation, wherein the determining comprises determining pre-coders and probability distributions for each of the at least one of the at least two channel state measurements that is the channel state measurement for interference estimation, and
• transmit the determined information to the wireless device in the wireless communications network.