Abstract: A method performed by a wireless device (110, 500, 791, 792) for determining whether the wireless device is power limited is disclosed. The method comprises receiving (1301), from a network node (160, 712), a transmit power control (TPC) command for one or more of a plurality of power control loops configured at the wireless device. The method comprises obtaining (1302) an indication of the one or more of the plurality of power control loops to which the received TPC command applies. The method comprises determining (1303), based on the obtained indication, whether one or more conditions related to power control at the wireless device are fulfilled. The method comprises determining (1304) whether the wireless device is power limited based on whether the one or more conditions are fulfilled.

Abstract: There is provided mechanisms for transmitting a two-port reference signal from an analog antenna array of an antenna arrangement. The analog antenna array comprises antenna elements of two polarizations. All antenna elements of each polarization are connected to a respective physical antenna port. A method comprises generating two virtual antenna ports, one for each of the two ports of the reference signal. The method comprises feeding the reference signal from the two virtual antenna ports to the two physical antenna ports via a virtualization network. The method comprises transmitting, via the antenna elements, the reference signal from the two physical antenna ports over a composite beamwidth in different spatial coverage per polarization for each of the two physical antenna ports whereby the transmitted reference signal, over the composite beamwidth, varies between having rank 1 and rank 2.

Abstract: There is provided mechanisms for transmitting a two-port reference signal from an analog antenna array of an antenna arrangement. The analog antenna array comprises antenna elements of two polarizations. All antenna elements of each polarization are connected to a respective physical antenna port. A method comprises generating two virtual antenna ports, one for each of the two ports of the reference signal. The method comprises feeding the reference signal from the two virtual antenna ports to the two physical antenna ports via a virtualization network. The method comprises transmitting, via the antenna elements, the reference signal from the two physical antenna ports over a composite beamwidth in different spatial coverage per polarization for each of the two physical antenna ports whereby the transmitted reference signal, over the composite beamwidth, varies between having rank 1 and rank 2.

Abstract: According to certain embodiments, a method implemented in a wireless device comprises determining configuration data representing a set of configurations. The method comprises receiving at least one reference signal from a transmission point. The receiving of the at least one reference signal is performed in accordance with a configuration selected from the set, wherein the configuration is related to uplink power control and is specific to an uplink channel or signal or a group thereof. The method comprises measuring a propagation-related quantity on the basis of the at least one reference signal and deriving an uplink power setting on the basis of the measured propagation-related quantity.

Abstract: A method performed by a wireless device (110, 500, 791, 792) for determining whether the wireless device is power limited is disclosed. The method comprises receiving (1301), from a network node (160, 712), a transmit power control (TPC) command for one or more of a plurality of power control loops configured at the wireless device. The method comprises obtaining (1302) an indication of the one or more of the plurality of power control loops to which the received TPC command applies. The method comprises determining (1303), based on the obtained indication, whether one or more conditions related to power control at the wireless device are fulfilled. The method comprises determining (1304) whether the wireless device is power limited based on whether the one or more conditions are fulfilled.

Abstract: According to some embodiments, a method is performed by a user equipment for reporting channel state information. The user equipment is configured with two or more channel state information reference signal, CSI-RS, resources in a CSI-RS resource set. The method comprises: selecting at least two CSI-RS resources from the CSI-RS resource set, wherein each of the at least two selected CSI-RS resources are associated to a set of spatially multiplexed layers, wherein different sets comprise different layers; determining a preferred precoder matrix for the selected CSI-RS resources; and transmitting a CSI report indicating the selected CSI-RS resources and the preferred precoder matrices. The method may further comprise calculating a channel estimate for the selected CSI-RS resources, and determining a channel quality indicator, CQI, corresponding to a hypothetical transmission from a plurality of effective channels where layers transmitted through the effective channels mutually interfere.

Abstract: According to some embodiments, a method performed by a wireless device for transmitting on a plurality of antennas comprises signaling, to a network node, a wireless device power transmission capability. The wireless device power transmission capability identifies a power ratio value of a plurality of power ratio values that the wireless device supports for transmission of a physical uplink channel. Each value of the plurality of power ratio values corresponds to a transmission power capability and to a number of antenna ports. A power ratio refers to a ratio relative to a maximum power the wireless device is rated to transmit. The method further comprises transmitting a physical uplink channel using the number of antenna ports with a power scaled at least by the power ratio value.

Abstract: Embodiments provide methods, network nodes, and wireless devices for sounding reference signal (SRS) power control in New Radio (NR). According to one aspect, a wireless device (WD) is configured to receive signaling from the network node that identifies a first sounding reference signal, SRS, configuration defining an SRS resource set comprising one or more SRS resources. The WD is further configured to determine a first transmission power intended for SRS transmission, the determining being based at least in part on the first SRS configuration. The WD is also configured to determine a second transmission power for at least one antenna port related to the SRS resource set based on the first transmission power and according to a rule dependent on the first SRS configuration. The WD is also configured to transmit SRS on the at least one antenna port with the second transmission power.

Abstract: According to certain embodiments, a method for use in a wireless transmitter for simultaneously transmitting a plurality of wireless signals using a plurality of antenna elements comprises selecting a non-constant modulus (NCM) spatial precoder from a NCM codebook comprising a plurality of NCM spatial precoders. The plurality of the NCM spatial precoders are based on a unit-power beamforming vector optimized so that the wireless transmitter transmits up to the full power of each antenna element of the plurality of antenna elements while an overall transmitted power remains constant. The method further comprises applying the selected NCM spatial precoder to a data signal for generating a plurality of coded signals; and transmitting the plurality of coded signals as wireless signals via a power amplifier operating at full power.

Abstract: A method performed by a wireless device for transmit power control, the wireless device being operable in a wireless telecommunications network, the wireless device being configured to determine a value for its transmit power based at least in part on cumulative transmit power control, whereby the wireless device determines a value for a cumulative transmit power control function based on a previous value for the cumulative transmit power control function and a correction value. The method comprises receiving, from a network node operable in the wireless telecommunications network, a control signal comprising an indication of a correction value, wherein the indication of the correction value has one of a plurality of possible values. The method further comprises responsive to a determination that the indication of the correction value is a particular value of the plurality of possible values, resetting the cumulative transmit power control.

Abstract: A network node signals to a wireless communication device which precoders in a codebook are restricted from being used. The network node in this regard generates codebook subset restriction signaling that, for each of one or more groups of precoders, jointly restricts the precoders in the group by restricting a certain component (e.g., a certain beam precoder) that the precoders in the group have in common. This signaling may be for instance rank-agnostic signaling that jointly restricts the precoders in a group without regard to the precoders' transmission rank. Regardless, the network node sends the generated signaling to the wireless communication device.

Abstract: According to certain embodiments, a method for use in a wireless transmitter for simultaneously transmitting a plurality of wireless signals using a plurality of antenna elements comprises selecting a non-constant modulus (NCM) spatial precoder from a NCM codebook comprising a plurality of NCM spatial precoders. The plurality of the NCM spatial precoders are based on a unit-power beamforming vector optimized so that the wireless transmitter transmits up to the full power of each antenna element of the plurality of antenna elements while an overall transmitted power remains constant. The method further comprises applying the selected NCM spatial precoder to a data signal for generating a plurality of coded signals; and transmitting the plurality of coded signals as wireless signals via a power amplifier operating at full power.

Abstract: There is disclosed a method of operating a measuring radio node in a wireless communication network, the method includes transmitting signaling based on delay spread information, the delay spread information being based on and/or representing delay spread associated to received reference signaling. There are also disclosed related devices and method.

Abstract: A method performed by a wireless device (110, 500, 791, 792) for determining whether the wireless device is power limited is disclosed. The method comprises receiving (1301), from a network node (160, 712), a transmit power control (TPC) command for one or more of a plurality of power control loops configured at the wireless device. The method comprises obtaining (1302) an indication of the one or more of the plurality of power control loops to which the received TPC command applies. The method comprises determining (1303), based on the obtained indication, whether one or more conditions related to power control at the wireless device are fulfilled. The method comprises determining (1304) whether the wireless device is power limited based on whether the one or more conditions are fulfilled.

Abstract: A technique for transmitting reference signals (RS), from a first station using a transmit antenna (400) with a number of antenna ports to a second station for determining channel state information (CSI), of a radio channel between the first station and the second station is described. As to a method aspect of the technique, a first set of precoders (502) is defined for the number of antenna ports. Based on the first set, a second set of precoders (702) is derived for the number of antenna ports. A second rank of the second set of precoders (502) is different from a first rank of the first set of precoders (702). The second rank of the second set is less than the number of antenna ports (402). Each of the antenna ports is associated with non-zero energy by at least one of the precoders (702) of the second set. The RS are transmitted using each of the precoders (702) of the second set.

Abstract: A method performed by a wireless device (510, 700, 1000) for transmitting a channel state information (CSI) report for a downlink channel comprises obtaining (601) a first set of candidate frequency-domain components and determining (602) a set of spatial-domain components. The method comprises determining (603) a second set of candidate frequency-domain components as a subset of the first set of candidate frequency-domain components. The method comprises determining (604), for each spatial-domain component of the set of spatial-domain components, a spatial-domain component-specific set of frequency-domain components as a subset of the second set of candidate frequency-domain components. The method comprises transmitting (605), to a network node (560, 900), the CSI report.

Abstract: There is provided mechanisms for transmitting uplink reference signals. A method is performed by a terminal device. The method comprises obtaining, from a network node, a configuration of transmission of the uplink reference signals. The configuration comprises an indication of a first frequency interval in which the uplink reference signals are to be transmitted. The method comprises distributing transmission power available for transmitting the uplink reference signals over the first frequency interval based on channel information for the first frequency interval. The method comprises transmitting the uplink reference signals in accordance with the distributed transmission power.

Abstract: A user equipment (UE) being configured to receive a downlink, DL, information; determine a spatial association for an uplink, UL, transmission based on the DL information; and determine UL power control, PC, parameters based on the DL information.

Abstract: According to certain embodiments, a method is performed by a wireless device configured with multiple power control closed loops for a serving cell. The method comprises receiving a transmit power control (TPC) command in a downlink control message that comprises a plurality of TPC commands. The method comprises determining a particular power control closed loop of the plurality of power control closed loops to which the TPC command should be applied. The particular power control closed loop is determined using the downlink control message. The method further comprises updating the particular power control closed loop using the TPC command.

Abstract: A user equipment (UE) the UE being configured to receive a message comprising configuration information, CI, indicating that a reference signal, RS, is quasi-co-located, QCL, with a transmission; and adjust a spatial Tx configuration for the transmission based on an RS associated with the received CI.