A method performed by a user equipment, UE, the method comprising: transmitting the number of antenna panels equipped at the user equipment, the number of antenna panels being at least two; transmitting the number of panel groups, wherein each panel group includes one antenna panel or more than one antenna panel sharing at least one transmit component of the UE; transmitting panel group information indicating which antenna panel is grouped into which panel group; transmitting the number of coherent panel groups, wherein each coherent panel group includes at least two panel groups and the antenna panels in the at least two panel groups of each coherent panel group are coherent; transmitting coherent panel group information indicating which panel group is grouped into which coherent panel group; and transmitting an indicator of beamforming architecture of the UE, wherein the indicator indicates that the UE employs a digital beamforming architecture or a hybrid beamforming architecture, and the method further comprises: transmitting the number of sounding reference signal ports, wherein each antenna panel supports a plurality sounding reference signal ports; transmitting, for each antenna panel, the number of coherent sounding reference signal port groups, CSPGs, wherein each CSPG includes at least two sounding reference signal ports that are coherent; and transmitting, for each CSPG, CSPG information indicating which sounding reference signal port is grouped into which CSPG. transmitting the number of antenna panels equipped at the user equipment, the number of antenna panels being at least two; transmitting the number of panel groups, wherein each panel group includes one antenna panel or more than one antenna panel sharing at least one transmit component of the UE; transmitting panel group information indicating which antenna panel is grouped into which panel group; transmitting the number of coherent panel groups, wherein each coherent panel group includes at least two panel groups and the antenna panels in the at least two panel groups of each coherent panel group are coherent; transmitting coherent panel group information indicating which panel group is grouped into which coherent panel group; and transmitting an indicator of beamforming architecture of the UE, wherein the indicator indicates that the UE employs a digital beamforming architecture or a hybrid beamforming architecture, and the method further comprises: transmitting the number of sounding reference signal ports, wherein each antenna panel supports a plurality sounding reference signal ports; transmitting, for each antenna panel, the number of coherent sounding reference signal port groups, CSPGs, wherein each CSPG includes at least two sounding reference signal ports that are coherent; and transmitting, for each CSPG, CSPG information indicating which sounding reference signal port is grouped into which CSPG. transmitting the number of sounding reference signal ports, wherein each antenna panel supports a plurality sounding reference signal ports; transmitting, for each antenna panel, the number of coherent sounding reference signal port groups, CSPGs, wherein each CSPG includes at least two sounding reference signal ports that are coherent; and transmitting, for each CSPG, CSPG information indicating which sounding reference signal port is grouped into which CSPG.