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:
Jun. 15, 2021
Filed:
May. 23, 2016
China Academy of Telecommunications Technology, Beijing, CN;
China Academy of Telecommunications Technology, Beijing, CN;
Abstract
Disclosed are a channel state information feedback and a control method and device therefor, which are used for realizing large-scale CSI feedback under an antenna system, wherein a UE may only need to feedback some pieces of PMI information, so that the complexity of the UE feeding back CSI is reduced, and the flexibility for a network side to control the UE to feed back the CSI is better. The channel state information (CSI) feedback control method provided in the present application comprises: a base station determining that there is a need to control a user equipment (UE) to feed back CSI, the CSI at least comprising a first precoding matrix indicator (PMI) and a second PMI, the first PMI and the second PMI corresponding to the same precoding matrix; and the base station sending trigger signaling of CSI feedback to the UE, wherein indication information used for instructing whether the UE feeds back the first PMI and/or the second PMI is comprised.