Identification of low performing radio branch

A radio transceiver device for identifying a low performing radio branch at the radio transceiver device, the radio transceiver device comprising N radio branches, the radio transceiver device comprising:

• a processing circuitry;
• and
• a memory containing instruction which, when executed by the processing circuitry, cause the radio transceiver device to:
• transmit a reference signal for at least some of the N radio branches in a respective test period, wherein the reference signal in each test period is transmitted according to a test configuration, and wherein the test configuration specifies that during each test period the reference signal is mapped to only one of the N radio branches such that in test period k, where k=1, N, the reference signal is only transmitted from radio branch k;
• receive at least one report from another radio transceiver device relating to measurements made by said another radio transceiver device on the reference signal transmitted for said at least some of the N radio branches;
• and
• identify which of the N radio branches is the low performing one by mapping information of the measurements in the at least one received report to the test configuration.

A non-transitory computer-readable storage medium comprising computer code which, when run on a processing circuitry of a radio transceiver device is capable of causing the radio transceiver device to identify a low performing radio branch at a radio transceiver comprising N radio branches by performing operations comprising:

• transmitting a reference signal for at least some of the N radio branches in a respective test period, wherein the reference signal in each test period is transmitted according to a test configuration, and wherein the test configuration specifies that during each test period the reference signal is mapped to only one of the N radio branches such that in test period k, where k=1, . . . , N, the reference signal is only transmitted from radio branch k;
• receiving at least one report from another radio transceiver device relating to measurements made by said another radio transceiver device on the reference signal transmitted for said at least some of the N radio branches;
• and
• identifying which of the N radio branches is the low performing one by mapping information of the measurements in the at least one received report to the test configuration.