Patent ID: 11949475
Assignee: WISIG NETWORKS PRIVATE LIMITED
Field: Telecommunications (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A method of received signal processing by a massive multiple input multiple output (M IMO) base station (BS), said massive MIMO BS comprises a plurality of antennas, at least one radio unit (RU), at least one distributed unit (DU), an interface configured for a communication between the at least one RU and the at least one DU, the method comprising:
processing, via the massive MIMO BS, by:
receiving, by the at least one RU, a plurality of signals corresponding to the plurality of antennas, wherein the plurality of signals comprises at least one of data signals, demodulation reference signals (DMRS) and sounding reference signals (SRS);
grouping, by the at least one RU and the at least one DU, a subset of the plurality of signals corresponding to a subset of antennas to a group, to generate a plurality of signal groups, wherein signals associated with each group are at least one of the data signals, the DM RS and the SRS;
performing a first stage filtering, by the at least one RU, on the plurality of signal groups associated with each group using one or more group specific filters to generate one or more group specific filtered signals, wherein the group specific filters are determined using signals associated with the group and/or a set of values communicated by the at least one DU to the at least one RU, and wherein the set of values are determined by the at least one DU based on SRS or predetermined values; and
communicating the one or more group specific filtered signals from the at least one RU to the at least one DU though the interface.