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:
Jan. 28, 2025
Filed:
Nov. 08, 2019
Telefonaktiebolaget Lm Ericsson (Publ), Stockholm, SE;
Ming Li, Stockholm, SE;
Huaisong Zhu, Beijing, CN;
Telefonaktiebolaget LM Ericsson (Publ), Stockholm, SE;
Abstract
Mechanisms for calibrating radio frequency branches of a radio transceiver device in a radio access network node. The method includes co-scheduling downlink time/frequency resources for terminal devices in accordance with a set of terminal device identifiers. One of the terminal device identifiers is not of any terminal device served by the radio access network node. The downlink time/frequency resources for this terminal device identifier define time/frequency resources for calibrating the radio frequency branches. The method includes determining a difference in amplitude/phase between the radio frequency branches by analysing a signal as received via an internal coupler unit in the radio transceiver device. The signal represents the time/frequency resources as transmitted over at least some of the radio frequency branches. The method includes calibrating the radio frequency branches by adjusting an amplitude/phase setting of at least one of the radio frequency branches according to the determined difference.