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A method and apparatus for generating a precoding matrix

A precoding matrix, matrix technology, applied in electrical components, digital transmission systems, error prevention and other directions, can solve the problem of not considering the interference noise of the cell target UE and affecting the demodulation capability of the cell target UE, and achieve the suppression of adjacent cell interference. Effect

Active Publication Date: 2017-12-01
ZTE CORP
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Problems solved by technology

[0004] However, the above-mentioned method for generating the precoding matrix does not consider the interference noise sum of the target UE in the cell, so that it is possible to suppress the interference to neighboring cells while the target UE in the cell is affected by the larger interference noise sum, In turn, it affects the demodulation capability of the target UE in the cell
[0005] It can be seen that the existing methods for generating precoding matrices only consider the suppression of interference to neighboring cells, and cannot meet the requirements of suppressing interference to neighboring cells, reducing the interference noise suffered by the target UE, and ensuring this The quality of the received signal of the target UE of the cell

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  • A method and apparatus for generating a precoding matrix
  • A method and apparatus for generating a precoding matrix

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Embodiment Construction

[0031] The basic idea of ​​the present invention is: the base station uses the signal quantization index value and the interference quantization index value to determine whether the precoding matrix needs to be adjusted, and if necessary, the base station calculates the precoding matrix using the quantization value of the interference noise and the sum.

[0032] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0033] The method for generating the precoding matrix proposed by the present invention is as follows: figure 1 shown, including the following steps:

[0034] Step 101: the base station receives in real time the measurement information reported by the target UE and the interference quantization index values ​​from neighboring cells;

[0035] Here, the target UE refers to any UE in the CoMP cell;

[0036] The interference quantization index value of the neighboring cell refers to th...

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Abstract

The invention discloses a method for generating a precoding matrix, comprising: the base station judges whether the precoding matrix needs to be adjusted by using the signal quantization index value and the interference quantization index value, and if necessary, the base station calculates the precoding matrix by using the quantization value of the interference noise and . The present invention also discloses a device for generating a precoding matrix. By using the present invention, a cell in a coordinated multi-point (CoMP, Coordinated Multi-Point) transmission state can suppress interference to neighboring cells and reduce target user equipment (UE) , Uesr Equipment) interference noise and ensure the quality of the received signal of the target UE in this cell.

Description

technical field [0001] The present invention relates to a coordinated multi-point (CoMP, Coordinated Multi-Point) transmission technology in a mobile communication system, in particular to a method and device for generating a precoding matrix. Background technique [0002] Advanced International Mobile Telecommunications (IMT-Advanced) is the standard of the fourth generation communication system (4G). IMT-Advanced puts forward higher requirements for system performance, especially for system spectrum utilization. IMT-Advanced can break through the limitation of single-point transmission on spectrum efficiency by using CoMP technology, and suppress the interference of user equipment (UE, User Equipment) between cells through the cooperation of base stations between cells, thereby improving the signal-to-interference-plus-noise ratio of UE (SINR, Signal Interference Noise Rate), thereby improving the system spectrum utilization. Wherein, suppression of inter-cell UE interfer...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/06H04L1/00
Inventor 刘文豪
Owner ZTE CORP