Communication over a dually-polarized re-configurable relaying device

Abstract

Examples provide a method of operating a first communication node (CN), wherein the first CN is configured for controlling a re-configurable relaying device (RRD), the RRD being re-configurable to provide spatial polarization filtering, the spatial polarization filtering being associated with an input spatial direction from which incident signals on a radio channel are accepted and with an output spatial direction into which the incident signals are transmitted by the RRD with configurable output polarizations set by the spatial polarization filtering, the method comprising providing, to the RRD, a control message indicative of predefined measurement spatial polarization filters; providing, to a second CN, a message requesting the second CN to transmit first reference signals associated with the predefined measurement spatial polarization filters, and receiving, on the radio channel from the second CN, first reference signals associated with the predefined measurement spatial polarization filters indicated by said control message, for estimation of channel matrices. Further, examples provide a method of operating a second CN and an RRD as well as corresponding first CNs, second CNs and RRDs.