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 technique for assigning pilot signals to user equipments is described. The user equipments access a radio base station that provides radio access. As to a method aspect of the technique, an access burst including initial pilot signals is received from the user equipments, wherein at least two of the user equipments apply simultaneously the same initial pilot signal. A multicast channel to the at least two user equipments is estimated based on the received access burst. A combined signal power received at the radio base station is computed for the at least two user equipments based on the estimated multicast channel. A message to the at least two user equipments is sent using the multicast channel. The message is indicative of the combined signal power and assigns different pilot signals to the at least two user equipments, wherein the assignment depends for each of the at least two user equipments on the combined signal power and a signal power received at the respective user equipment.

Abstract: A wireless device, a network node and respective methods performed thereby for communicating with each other are provided. The method performed by the wireless device comprises determining (120) a first interference level indication of a first frequency resource; and determining (125) a second interference level indication of a second frequency resource. The method (100) further comprises transmitting (130) a first uplink reference signal on the first frequency resource with a first transmission power, and transmitting (135) a second uplink reference signal on the second frequency resource with a second transmission power, wherein the first transmission power is based on the first- and second interference level indications.

Abstract: A technique for assigning pilot signals to user equipments is described. The user equipments access a radio base station that provides radio access. As to a method aspect of the technique, an access burst including initial pilot signals is received from the user equipments, wherein at least two of the user equipments apply simultaneously the same initial pilot signal. A multicast channel to the at least two user equipments is estimated based on the received access burst. A combined signal power received at the radio base station is computed for the at least two user equipments based on the estimated multicast channel. A message to the at least two user equipments is sent using the multicast channel. The message is indicative of the combined signal power and assigns different pilot signals to the at least two user equipments, wherein the assignment depends for each of the at least two user equipments on the combined signal power and a signal power received at the respective user equipment.

Abstract: A technique for assigning pilot signals to user equipments is described. The user equipments access a radio base station that provides radio access. As to a method aspect of the technique, an access burst including initial pilot signals is received from the user equipments, wherein at least two of the user equipments apply simultaneously the same initial pilot signal. A multicast channel to the at least two user equipments is estimated based on the received access burst. A combined signal power received at the radio base station is computed for the at least two user equipments based on the estimated multicast channel. A message to the at least two user equipments is sent using the multicast channel. The message is indicative of the combined signal power and assigns different pilot signals to the at least two user equipments, wherein the assignment depends for each of the at least two user equipments on the combined signal power and a signal power received at the respective user equipment.