DEVICES AND METHODS FOR GENERATING CHANNEL STATE INFORMATION REFERENCE SIGNALS IN WIRELESS COMMUNICATION SYSTEM Russian patent published in 2024 - IPC H04W24/10 H04W72/04 

FIELD: wireless communication.

SUBSTANCE: at a base station in a wireless communication system for a given number of N_p used digital ports, determining a CSI-RS structure consisting of resource elements, where each resource element in the frequency domain is determined by a subcarrier and in the time domain – by an OFDM symbol. For the CSI-RS structure: setting a group of N_PRB adjacent physical resource blocks (PRB) in the frequency domain and a group of N_TTI adjacent time slots in the time domain; setting the number of N_CDM CDM groups; CDM-group is determined and frequency-time location of N_CDM CDM-groups is specified. CSI-RS structure is repeating across PRB groups.

EFFECT: provides support for the required number of digital ports (up to 256) with the possibility of systematic formation of CDM-groups with their frequency-time arrangement by groups of PRB/slots, with greater flexibility in terms of allocating frequency-time resources to separate CDM-groups and with possibility of nested scaling of CSI-RS ports in a transparent manner for a base station and a user device.

47 cl, 25 dwg, 5 tbl