Abstract: A communication device comprises a receiver including at least two receive antennas and configured to receive at least one reference signal of a plurality of reference signals, each reference signal being transmitted from at least one base station at a predefined reference signal transmission time; a controller configured to switch between at least two receive configurations of the at least two antennas during a reception period of the at least one reference signal; and a signal quality determiner configured to determine a parameter indicative of a first signal quality of the received reference signal for each receive configuration.

Abstract: A communication device comprises a receiver including at least two receive antennas and configured to receive at least one reference signal of a plurality of reference signals, each reference signal being transmitted from at least one base station at a predefined reference signal transmission time; a controller configured to switch between at least two receive configurations of the at least two antennas during a reception period of the at least one reference signal; and a signal quality determiner configured to determine a parameter indicative of a first signal quality of the received reference signal for each receive configuration.

Abstract: Herein is disclosed a wireless communication device comprising two or more antennas; one or more transceivers, configured to process wireless signal for one or more processors received via the two or more antennas; and one or more processors, configured to determine a timing of data transmissions within the wireless signal; determine a timing of intervals between beam selection protocol transmissions in the wireless signal; determine a testing period corresponding to an overlap of one data transmission selected from the data transmissions and one interval of the intervals; and measure a signal quality of the selected data transmission during the testing period using a candidate receive-beam setting from a plurality of predefined receive-beam settings for receiving the wireless signals via the two or more antennas.

Abstract: A communication device comprises a receiver including at least two receive antennas and configured to receive at least one reference signal of a plurality of reference signals, each reference signal being transmitted from at least one base station at a predefined reference signal transmission time; a controller configured to switch between at least two receive configurations of the at least two antennas during a reception period of the at least one reference signal; and a signal quality determiner configured to determine a parameter indicative of a first signal quality of the received reference signal for each receive configuration.

Abstract: This disclosure relates to a channel state information, CSI, acquisition circuitry, configured to: determine at least one channel covariance matrix estimate and interference-and-noise covariance matrix estimate based on at least one channel state information reference signal, CSI-RS, resource; select a restricted number of rank indicator, RI, hypotheses from a set of RI hypotheses for running a joint rank indicator-precoding matrix indicator, RI-PMI, search on the CSI-RS based channel covariance matrix estimate and interference-and-noise covariance matrix estimate to select an optimal RI value and associated PMI value, wherein the restricted number of RI hypotheses is in accordance with a run-time estimated CSI acquisition capability of the CSI acquisition circuitry; and execute the joint RI-PMI search based on the selected RI hypotheses.

Abstract: Herein is disclosed a wireless communication device comprising two or more antennas; one or more transceivers, configured to process wireless signal for one or more processors received via the two or more antennas; and one or more processors, configured to determine a timing of data transmissions within the wireless signal; determine a timing of intervals between beam selection protocol transmissions in the wireless signal; determine a testing period corresponding to an overlap of one data transmission selected from the data transmissions and one interval of the intervals; and measure a signal quality of the selected data transmission during the testing period using a candidate receive-beam setting from a plurality of predefined receive-beam settings for receiving the wireless signals via the two or more antennas.

Abstract: This disclosure relates to a channel state information, CSI, acquisition circuitry, configured to: determine at least one channel covariance matrix estimate and interference-and-noise covariance matrix estimate based on at least one channel state information reference signal, CSI-RS, resource; select a restricted number of rank indicator, RI, hypotheses from a set of RI hypotheses for running a joint rank indicator-precoding matrix indicator, RI-PMI, search on the CSI-RS based channel covariance matrix estimate and interference-and-noise covariance matrix estimate to select an optimal RI value and associated PMI value, wherein the restricted number of RI hypotheses is in accordance with a run-time estimated CSI acquisition capability of the CSI acquisition circuitry; and execute the joint RI-PMI search based on the selected RI hypotheses.

Abstract: A communication device comprises a receiver including at least two receive antennas and configured to receive at least one reference signal of a plurality of reference signals, each reference signal being transmitted from at least one base station at a predefined reference signal transmission time; a controller configured to switch between at least two receive configurations of the at least two antennas during a reception period of the at least one reference signal; and a signal quality determiner configured to determine a parameter indicative of a first signal quality of the received reference signal for each receive configuration.

Abstract: Herein is disclosed a wireless communication device comprising two or more antennas, configured to receive a wireless signal; one or more receivers, configured to detect position data indicating a position of the wireless communication device and to process the wireless signal for one or more processors; the one or more processors, configured to determine a signal quality of the wireless signal; determine a position change information of a position of the wireless communication device based on the detected position data; and select a beam selection protocol from a plurality of beam selection protocols based on at least the signal quality and the position change information.

Abstract: A method and apparatus for receive beam-forming in an analog domain. A user equipment may perform channel estimation for obtaining a set of channel responses for a plurality of antennas of the UE. The UE may determine a beamforming codeword for receive beamforming based on the set of channel responses. The UE may apply a training codeword to the received signal in analog domain. The training codeword includes phase adjustment coefficients for each antenna and a different training codeword may be applied for each channel observation. The UE may measure a metric for at least one candidate codeword based on the set of channel responses and determine the beamforming codeword based on the metric.

Abstract: Herein is disclosed a wireless communication device comprising two or more antennas, configured to receive a wireless signal; one or more receivers, configured to detect position data indicating a position of the wireless communication device and to process the wireless signal for one or more processors; the one or more processors, configured to determine a signal quality of the wireless signal; determine a position change information of a position of the wireless communication device based on the detected position data; and select a beam selection protocol from a plurality of beam selection protocols based on at least the signal quality and the position change information.

Abstract: A method and apparatus for receive beam-forming in an analog domain. A user equipment may perform channel estimation for obtaining a set of channel responses for a plurality of antennas of the UE. The UE may determine a beamforming codeword for receive beamforming based on the set of channel responses. The UE may apply a training codeword to the received signal in analog domain. The training codeword includes phase adjustment coefficients for each antenna and a different training codeword may be applied for each channel observation. The UE may measure a metric for at least one candidate codeword based on the set of channel responses and determine the beamforming codeword based on the metric.