Abstract: A method performed by a network node for broadcasting beamformed signals of a data transmission to a User Equipment (UE). For each specific data transmission from a number of data transmissions the network node allocates a set of Reference Signals, RS, for the data transmission, the number of RSs in the set of RSs being based on a measure of popularity for UEs receiving the specific data transmission. The network node sends an indication of the allocated set of SRs for each specific data transmission. The network node receives from a UE requesting a particular data transmission out of the number of data transmissions an RS from the set of RS allocated for the particular data transmission. The network node broadcasts beamformed signals of the particular data transmission. The signals are beamformed based on estimated composite channels from all UEs that transmit any RS included in the set of RS allocated for the particular data transmission.

Abstract: A Radio Network Node (RNN) 110 and a method therein for improving capacity in a wireless communications system 100. The RNN is configured to serve a first wireless device 120 and a second wireless device (WD) 130. The RNN assigns a shared uplink pilot signal to the first and second WDs. Further, the RNN transmits, to the first WD, an indication of how possible second data intended for the second WD will be comprised in a signal to be transmitted to the first WD. Furthermore, the RNN estimates a combined channel based on a received shared uplink pilot signal from the first WD and/or the second WD. Yet further, the RNN determines a beamforming vector for the estimated combined channel; and transmits the signal to the first WD, wherein the signal comprises first data and the possible second data, which first data is decodable only by the first WD.

Abstract: A Radio Network Node (RNN) 110 and a method therein for improving capacity in a wireless communications system 100. The RNN is configured to serve a first wireless device 120 and a second wireless device (WD) 130. The RNN assigns a shared uplink pilot signal to the first and second WDs. Further, the RNN transmits, to the first WD, an indication of how possible second data intended for the second WD will be comprised in a signal to be transmitted to the first WD. Furthermore, the RNN estimates a combined channel based on a received shared uplink pilot signal from the first WD and/or the second WD. Yet further, the RNN determines a beamforming vector for the estimated combined channel; and transmits the signal to the first WD, wherein the signal comprises first data and the possible second data, which first data is decodable only by the first WD.