Method for transmitting channel state information, user equipment, and base station

摘要

The present invention discloses a method for transmitting channel state information, a user equipment, and a base station. The method includes: determining to-be-reported channel state information CSI, where the to-be-reported CSI includes at least one CSI report, and each CSI report of the at least one CSI report corresponds to one downlink carrier; and sending the to-be-reported CSI to a base station through a physical uplink channel. The user equipment includes a determining module and a sending module. The base station includes a receiving module, a first determining module, and a second determining module. According to the method, the user equipment, and the base station in the embodiments of the present invention, channel state information from different downlink carriers can be transmitted on a same subframe, and a performance requirement of the reported channel state information can be ensured, and power utilization efficiency can be improved.

主权项

1. A method for transmitting channel state information, comprising:
determining to-be-reported channel state information (CSI), which comprises a plurality of CSI reports from among all CSI reports that need to be reported on a same subframe; and sending the to-be-reported CSI to a base station through a physical uplink channel; wherein the determining to-be-reported CSI comprises: when a number of all CSI reports that need to be reported on the same subframe is less than or equal to a first value, determining all CSI reports as the to-be-reported CSI, wherein the first value is greater than or equal to 2; or when a number of all CSI reports is greater than a first value, sequencing, in descending order of priorities of reporting types of all CSI reports or in ascending order of carrier indexes of downlink carriers that correspond to all CSI reports; and determining, among the sequenced CSI reports, M CSI reports that rank first in the sequence as the to-be-reported CSI, wherein M is a natural number and is equal to the first value.