US 12,438,752 B2
Methods and devices for joint processing in massive MIMO systems
Lu Lu, Hillsboro, OR (US); Sundar Krishnamurthy, Sunnyvale, CA (US); Kuilin Clark Chen, Portland, OR (US); and Thushara Hewavithana, Tempe, AZ (US)
Assigned to Intel Corporation, Santa Clara, CA (US)
Filed by Intel Corporation, Santa Clara, CA (US)
Filed on Dec. 17, 2021, as Appl. No. 17/553,918.
Prior Publication US 2023/0198815 A1, Jun. 22, 2023
Int. Cl. H04L 25/02 (2006.01); H04B 17/391 (2015.01)
CPC H04L 25/0256 (2013.01) [H04B 17/391 (2015.01); H04L 25/025 (2013.01); H04L 25/0252 (2013.01); H04L 25/0258 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A distributed unit (DU) comprising:
a transceiver configured to communicate with a plurality of radio units (RUs) that are configured to serve a plurality of user equipments (UEs), and
a processor configured to:
determine RU precoding parameters for UEs served by a first RU set from the plurality of RUs based on estimated channel parameters representing communication channels between the first RU set and at least one of interfering UEs served by other RUs from the plurality of RUs, wherein the other RUs are distinct from RUs within the first RU set;
encode information indicating the determined RU precoding parameters for application to downlink transmissions to the first RU set;
determine DU precoding parameters for precoding, at the DU, communication signals intended for downlink transmissions via the first RU set to the UEs served by the first RU set based on the determined RU precoding parameters; and
precode the communication signals at the DU based on the determined DU precoding parameters prior to transmission towards the first RU set.