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

Claim 17:
18. A computer program product for controlling transmission from an antenna panel, the computer program product comprising a non-transitory computer readable medium storing computer code which, when run on processing circuitry of a network apparatus, causes 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 computer code further causes the network apparatus 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.