Unlock instant, AI-driven research and patent intelligence for your innovation.

Information feedback method, device and terminal

A technology of feedback quantity and indication information, applied in the field of communication, can solve the problems of coarse fineness, no related solutions, and only 8-antenna codebooks are considered

Active Publication Date: 2019-09-17
DATANG MOBILE COMM EQUIP CO LTD
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When reporting periodically, the CSI cannot exceed 11 bits, and the fineness of CSI reporting is coarse
[0008] The periodic feedback method of the current LTE system only considers the 8-antenna codebook in its design
Compared with the current 8-antenna codebook, the number of 3D MIMO codebooks has increased significantly. When the UE reports channel state information (CSI), the feedback overhead increases, and the existing feedback mode is difficult to support a larger number of codebooks. the feedback
For the feedback method design of 3D MIMO codebook, there is no related scheme at present

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Information feedback method, device and terminal
  • Information feedback method, device and terminal
  • Information feedback method, device and terminal

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0105] like Figure 5 As shown, an embodiment of the present invention provides an information feedback method, including:

[0106] Step 51: Obtain precoding matrix indication information of a multi-level precoding matrix of a precoding matrix used for downlink data transmission;

[0107] Step 52: Feed back the precoding matrix indication information of each precoding matrix to the base station respectively or feed back to the base station after joint coding.

[0108] In this embodiment, the precoding matrix W used for downlink data transmission is obtained by the operation of multi-level precoding matrices W1, W2, . . . , WN. For the design of the codebook of the 3D MIMO antenna array, there are various schemes. For example, when it is obtained from the two-stage precoding matrix, W=W1×W2, W is the precoding matrix, W1 is the first-stage precoding matrix, and W2 is the The second-level precoding matrix;

[0109] in,

[0110]

[0111] represents the K-th dimension pre...

no. 2 example

[0120] like Image 6 As shown, an information feedback method includes:

[0121] Step 61, obtaining the dimension of the first-level precoding matrix of the precoding matrix used for downlink data transmission;

[0122] Step 62: Acquire precoding matrix indication information of the first-level precoding matrix according to the dimension of the first-level precoding matrix;

[0123] Step 63: Acquire precoding matrix indication information of the second-level precoding matrix to the Nth-level precoding matrix of the precoding matrix; wherein, the second-level precoding matrix to the Nth-level precoding matrix The precoding matrix of the previous stage is obtained, and N is an integer greater than 2;

[0124] Step 64: Feed back the precoding matrix indication information of each precoding matrix to the base station respectively or feed back to the base station after joint coding.

[0125] like Figure 7 As shown, in this embodiment, when step 62 is specifically implemented, ...

no. 3 example

[0135] like Figure 8 As shown, an information feedback method includes:

[0136] Step 811: Obtain the first precoding matrix indication information PMI1 of the first-stage precoding matrix; or Step 812, obtain the indication information H-PMI1 and vertical dimension of the precoding matrix of the first-stage precoding matrix in the horizontal dimension. Indication information V-PMI1 of the precoding matrix;

[0137] Step 82: Acquire precoding matrix indication information of the second-level precoding matrix to the Nth-level precoding matrix of the precoding matrix; wherein, the second-level precoding matrix to the Nth-level precoding matrix The precoding matrix of the previous stage is obtained, and N is an integer greater than 2;

[0138] Step 831, independently feeding back the rank information RI used to determine the precoding matrix to the base station; or

[0139] Step 832, independently feeding back the channel quality information CQI used for determining the preco...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides an information feedback method, device and terminal, and relates to the communication field. The feedback method of the present invention includes: obtaining the precoding matrix indication information of the multi-level precoding matrix of the precoding matrix used for downlink data transmission; feeding back the precoding matrix indication information of each level of precoding matrix to the base station or joint encoding Feedback to the base station. The scheme of the present invention can meet the requirement of higher codebook feedback load.

Description

technical field [0001] The present invention relates to the field of communication technologies, and in particular, to an information feedback method, device and terminal. Background technique [0002] With the rapid development of the mobile Internet, the business data traffic has increased rapidly, which has brought great adjustment pressure to the existing wireless network. For the current mainstream communication system (LTE, Long Term Evolution, Long Term Evolution), increasing system capacity and reducing interference are still the most important development goals. [0003] like figure 1 and figure 2 As shown, the current 2D MIMO (Multiple-InputMultiple-Output) smart antenna with controllable horizontal dimension uses multiple transmitting antennas and receiving antennas at the transmitting end and the receiving end respectively, mainly using the spatial freedom in the horizontal direction. degrees to obtain the gain of multiple antennas. in, figure 1 is a horizo...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/06H04L1/06
CPCH04B7/0619H04B7/0636H04L1/0625H04B7/06H04L1/06H04B7/0456H04B7/063H04B7/0632H04B7/0639H04B7/0478H04B7/0479H04B7/0413H04B7/0473
Inventor 李辉高秋彬陈润华陈文洪塔玛拉卡·拉盖施
Owner DATANG MOBILE COMM EQUIP CO LTD