A method and device for sending and receiving precoded information

A technology of precoding information and a sending method, applied in the field of sending and receiving methods and devices for precoding information, capable of solving problems such as wideband precoding matrix indication PMI error propagation, achieving improved precoding performance, increased reliability, and reduced errors The effect of spreading

Active Publication Date: 2017-09-29
NOKIA TECH OY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Wideband precoding matrix indicates that PMI is prone to error propagation

Method used

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  • A method and device for sending and receiving precoded information
  • A method and device for sending and receiving precoded information
  • A method and device for sending and receiving precoded information

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Embodiment Construction

[0028] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0029] see figure 1 , an embodiment of the present invention provides a method for sending precoding information, the system bandwidth is divided into at least one subband, and the method includes:

[0030] 101: The terminal obtains the broadband PMI;

[0031] Specifically, the terminal can acquire the broadband PMI according to preset criteria, and of course, can also acquire the broadband PMI according to other methods in the prior art; taking the terminal acquiring the broadband PMI according to the preset criteria as an example, the terminal can obtain the broadband PMI based on the preset criteria 1 Calculate the wideband precoding matrix to indicate PMI, specifically as shown in formula (1):

[0032]

[0033] where W j Repr...

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PUM

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Abstract

The present invention discloses a method and device for sending and receiving precoding information. The method includes: a terminal acquires a wideband precoding indication PMI; the terminal separately encodes the MSB of the wideband PMI or encodes the The MSB is jointly coded with N bits of other information to obtain coded information, wherein the MSB is a part of the broadband PMI, and N is a natural number; the terminal sends the coded information to the data sending end. In the embodiment of the present invention, the reliability of the wideband precoding information is improved, and error propagation is reduced, thereby further improving Precoding performance.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a method and device for sending and receiving precoded information. Background technique [0002] With the continuous development of communication technology, in order to improve the performance of data transmission, the data sending end (such as NodeB (Node B), BS (Base station, base station), etc.) (Mobile Station, mobile station, etc.) Feedback precoding information (such as PMI (Precoding Matrix Indicator, precoding matrix indication) and the local pre-stored codebook, the data to be sent is preprocessed and then sent to the terminal, so that the data The transmission process adapts to the change of the channel state, thereby improving the performance of data transmission. Therefore, how to transmit and receive the above precoding information is very important. [0003] The existing 3GPP LTE R8 (3rd Generation Partnership Project Long Term Evolution Release 8,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/00H04L25/03H04L5/00H04B7/06
Inventor 周永行王建国
Owner NOKIA TECH OY
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