Patent ID: 11943025
Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
Field: Telecommunications (Electrical engineering)
Classification: CPC H | IPC H

Claim 9:
10. A network apparatus for controlling transmission from an antenna panel, the network apparatus comprising processing circuitry, the processing circuitry being configured to cause the network apparatus to:
perform time-domain beamformed communication with terminal devices served by the network apparatus using the antenna panel split into N>1 subpanels, each subpanel having two input ports and being fed, via the input ports, by signals and configured to generate beams by application of antenna element weights to its antenna elements,
wherein the subpanels are at least phase-wise synchronized with each other, wherein when one and the same signal is fed into the input ports of all the subpanels, signals as transmitted from the subpanels add up coherently to represent a 1-layer transmission by a time reference being shared between the subpanels,
wherein the time-domain beamformed communication is performed by the network apparatus using from 1 to 2N layers per symbol of a transmission time interval according to a mapping between the input ports and the signals as transmitted from the subpanels, and
wherein the network apparatus further is configured to provide one and the same antenna port of a one-port CSI-RS port to all input ports, wherein the one-port CSI-RS is transmitted in a first set of beams.