The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 31, 2024
Filed:
Jun. 20, 2019
Telefonaktiebolaget Lm Ericsson (Publ), Stockholm, SE;
TELEFONAKTIEBOLAGET LM ERICSSON (PUBL), Stockholm, SE;
Abstract
Disclosed is a method performed by a BBU system of a wireless communication network, comprising a distributed base station system (), which comprises a BBU () and an RRU () connected over a fronthaul link (). The method comprises determining first and second parts of beamforming weights based on a determined downlink channel estimate, and compressing the second part of the beamforming weights. The first part of the beamforming weights is determined for performing interference cancellation between user-layer signals, and the second part is determined for expanding the user-layer signals to antenna signals. The BBU then sends the first part and the compressed second part of the beamforming weights to the RRU, as well as the user-layer signals, over the fronthaul link (). The RRU () then beamforms the user-layer signals according to the first and the second parts of the beamforming weights before sending the signals to a number of UEs ().