FIELD: wireless communication.
SUBSTANCE: initiator device (102) is provided with a formation scheme for support of a single user multiple input multiple output (hereinafter – SU-MIMO) operation and formation of first signal (602) containing a value, which indicates, which of a reciprocal MIMO phase and a non-reciprocal MIMO phase should be applied to training of beam formation (hereinafter – BF) of SU-MIMO, and a transmission scheme for transmission of first signal (602) to responder device (104); responder device (104) is provided with a reception scheme for reception of first signal (602) from initiator device (102) and a processing scheme for determination, based on this value, of which of the reciprocal MIMO phase or the non-reciprocal MIMO phase should be applied to training of SU-MIMO BF.
EFFECT: increase in the efficiency of training of BF for SU-MIMO operation.
15 cl, 22 dwg, 1 tbl
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