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Method, device and terminal equipment for reporting channel state information

A technology of channel state information and terminal equipment, which is applied in the field of communication and can solve problems such as low throughput and high power consumption of terminals

Inactive Publication Date: 2017-08-08
GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the prior art, RI and CQI are calculated separately and reported independently, but according to this reporting method, the transmission mode selected by the base station has the problems of low throughput and high power consumption of the terminal

Method used

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  • Method, device and terminal equipment for reporting channel state information
  • Method, device and terminal equipment for reporting channel state information
  • Method, device and terminal equipment for reporting channel state information

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Embodiment Construction

[0025] The embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the drawings are exemplary, and are only used to explain the present invention, but should not be understood as limiting the present invention. On the contrary, the embodiments of the present invention include all changes, modifications and equivalents falling within the scope of the spirit and connotation of the appended claims.

[0026] In the prior art, in the reporting of CSI, CQI and RI are completed independently, and the reported value of CQI is as follows figure 1 As shown, figure 1 It is a schematic diagram of the CQI reported value in the related art. When reporting the CQI, the terminal device selects a value from 0-15 to report according to...

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Abstract

The invention provides a channel state information report method, device and terminal equipment. The channel state information report method comprises: measuring the state of a channel between the terminal equipment and a base station, and obtaining CSI (channel state information) of the channel between the terminal equipment and the base station; if the value of RI (Rank Indicator) is larger than 1, selecting the values of CQI (Channel Quality Indicator) in a diversity transmission mode and an MIMO (Multiple Input Multiple Output) transmission mode respectively based on the CSI; obtaining efficiencies in the diversity transmission mode and the MIMO transmission mode respectively based on the values of CQI in the diversity transmission mode and the MIMO transmission mode; reporting the CSI to the base station based on the efficiencies in the diversity transmission mode and the MIMO transmission mode. According to the channel state information report method, when the CSI is reported, the CSI reported to the base station is determined by the combination of the CQI and the RI, so that the base station can select a transmission mode which has relatively large handling capacity and can remarkably reduce power consumption of the terminal equipment according to the CSI reported by the terminal equipment.

Description

Technical field [0001] The present invention relates to the field of communication technology, and in particular to a method, device and terminal equipment for reporting channel state information. Background technique [0002] In the existing fourth generation mobile communication technology (Fourth Generation; hereinafter referred to as 4G) and future mobile communications, channel state information (Channel State Information; hereinafter referred to as CSI) is a very important parameter. The terminal needs to report the CSI between the terminal and the base station periodically or according to instructions, and the base station will allocate downlink bandwidth, coding mode and spatial multiplexing status for the terminal based on the CSI. [0003] The content of the CSI report is composed of a channel quality indicator (Channel Quality Indicator; hereinafter referred to as CQI), a rank indicator (Rank Indicator; hereinafter referred to as: RI), and a precoding matrix indicator (P...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/0413H04B7/06H04L1/00
CPCH04B7/0413H04B7/0626H04L1/0026Y02D30/70
Inventor 曾元清
Owner GUANGDONG OPPO MOBILE TELECOMM CORP LTD