Information feedback method and apparatus, terminal and eNodeB

An information feedback and terminal technology, applied in the field of communication, can solve the problem of not supporting UE to report different channel information content, not supporting, etc.

Inactive Publication Date: 2017-02-15
CHINA ACAD OF TELECOMM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can solve the problem that the feedback mechanism in the prior art does not support the UE to select some CSI feedback configurations from multiple CSI feedback configurations for CSI

Method used

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  • Information feedback method and apparatus, terminal and eNodeB
  • Information feedback method and apparatus, terminal and eNodeB
  • Information feedback method and apparatus, terminal and eNodeB

Examples

Experimental program
Comparison scheme
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no. 1 example

[0081] Such as Figure 6 As shown, an information feedback method includes:

[0082]Step 61: Receive the channel state information CSI feedback configuration group sent by the base station, each CSI feedback configuration group includes at least one CSI feedback configuration, and the CSI feedback configuration is a downlink signal configuration used for downlink CSI measurement and feedback; usually through high-level Signaling (such as radio resource control RRC signaling) receives the CSI feedback configuration group sent by the base station;

[0083] Step 62, according to the channel information content indication information sent by the base station, determine the channel information that needs to be fed back by the terminal based on the CSI feedback configuration group; wherein the channel information includes: one or Multiple channel information content;

[0084] Step 63: Report the channel information that needs to be fed back by the terminal based on the CSI feedbac...

no. 2 example

[0093] Such as Figure 7 As shown, an information feedback method includes:

[0094] Step 71, receiving channel state information CSI feedback configuration groups sent by the base station, each CSI feedback configuration group includes at least one CSI feedback configuration, and the CSI feedback configuration is a downlink signal configuration for downlink CSI measurement and feedback;

[0095] Step 72: According to the channel information content indication information indicated by the base station through high-layer signaling, determine the channel information that needs to be fed back by the terminal based on the CSI feedback configuration group; or according to the channel carried by the base station through aperiodic CSI feedback trigger signaling The information content indication information determines the channel information that needs to be fed back by the terminal based on the CSI feedback configuration group; or determines the channel information based on the chan...

no. 3 example

[0111] Such as Figure 8 As shown, an information feedback method includes:

[0112] Step 81, receiving channel state information CSI feedback configuration groups sent by the base station, each CSI feedback configuration group includes at least one CSI feedback configuration, and the CSI feedback configuration is a downlink signal configuration for downlink CSI measurement and feedback;

[0113] Step 82, receiving the subframe set corresponding to different channel information content sent by the base station through high-level signaling, according to the subframe where the aperiodic CSI feedback trigger signaling in the subframe set is located, or the subframe where CSI is reported , determining channel information that needs to be fed back by the terminal based on the CSI feedback configuration group;

[0114] Step 83: Report the channel information that needs to be fed back by the terminal based on the CSI feedback configuration group to the base station.

[0115] In thi...

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PUM

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Abstract

The invention provides an information feedback method and apparatus, a terminal and an eNodeB and relate to the field of communication to solve a problem that the eNodeB cannot flexibly control the terminal to perform CSI feedback in the prior art. The method comprises the following steps: receiving a channel state information (CSI) feedback configuration group transmitted by the eNodeB; determining channel information required by the CSI feedback configuration group to be fed back by the terminal based on the channel information content indication information transmitted by the eNodeB; reporting the channel information required by the CSI feedback configuration group to be fed back by the terminal to the eNodeB. The scheme of the invention configures the CSI feedback configuration group for the terminal through the eNodeB to instruct the terminal to feed back the channel information according to the CSI feedback configuration group so that the eNodeB can flexibly control the CSI feedback of the terminal.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to an information feedback method, device, terminal and base station. Background technique [0002] In existing cellular systems, antenna arrays of base stations are generally arranged horizontally, such as figure 1 and figure 2 shown. figure 1 Shown are dual polarized antennas arranged horizontally, figure 2 Shown is a line array antenna arranged horizontally. The beam at the transmitter of the base station can only be adjusted in the horizontal direction, while the vertical direction has a fixed downtilt angle. Therefore, various beamforming / precoding techniques are based on the channel information in the horizontal direction. In fact, since the wireless signal propagates three-dimensionally in space, the method of fixing the downtilt angle cannot make the performance of the system optimal. Beam adjustment in the vertical direction is of great significance fo...

Claims

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Application Information

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IPC IPC(8): H04B7/06
CPCH04B7/0626
Inventor 陈文洪高秋彬陈润华李辉塔玛拉卡·拉盖施
Owner CHINA ACAD OF TELECOMM TECH
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