Abstract: There is provided mechanisms for determining direction of a second radio transceiver device with respect to a first radio transceiver device. The first radio transceiver device is configured to communicate with beams in a beam set. A method is performed by a processing unit. The method comprises obtaining a vector of radio parameter measurements from measurements performed on a radio link between the first radio transceiver device and the second radio transceiver device for one and the same location of the second radio transceiver device. The vector comprises a radio parameter measurement per each beam in the beam set. The method comprises determining the direction of the second radio transceiver device with respect to the first radio transceiver device by comparing the vector of radio parameter measurements to a set of candidate direction profiles.

Abstract: There is provided mechanisms for enabling OTA estimation of a radio frequency parameter of a radio transmitter during a test time interval. The radio transmitter is configured for transmission in a set of beams. A method is performed by a controller of the radio transmitter. The method comprises identifying a subset of beams in the set of beams that, during the test time interval, are unused for transmission of scheduled signals. The method comprises instructing the radio transmitter to transmit, during the test time interval, an unscheduled signal in the subset of beams, whilst also transmitting the scheduled signals in those beams of the set of beams that are used for transmission of the scheduled signals, for enabling estimation of the radio frequency parameter of the radio transmitter.

Abstract: The embodiments herein relate to a method performed by a communication node (103) for enabling OTA testing. The communication node (103) comprises at least one active antenna (310). The communication node (103) transmits a test signal OTA by emitting a radiation pattern from the active antenna (310). The active antenna (310) scans two or more directions when emitting the radiation pattern.

Abstract: The embodiments herein relate to a method performed by a communication node (103) for enabling OTA testing. The communication node (103) comprises at least one active antenna (310). The communication node (103) transmits a test signal OTA by emitting a radiation pattern from the active antenna (310). The active antenna (310) scans two or more directions when emitting the radiation pattern.