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Value determination method and value determination device for precoding type indicator

A technology of precoding type and determination method, applied in the field of determining the value of precoding type indication

Active Publication Date: 2016-10-19
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The purpose of the present invention is to provide a method and device for determining the value of PTI to solve the problem of how to determine the value of PTI

Method used

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  • Value determination method and value determination device for precoding type indicator
  • Value determination method and value determination device for precoding type indicator
  • Value determination method and value determination device for precoding type indicator

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Embodiment Construction

[0172] The technical solutions provided by the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0173] figure 2 Shown is a flow chart of a method for determining the value of a precoding type indication provided by an embodiment of the present invention, which at least includes the following operations:

[0174] Step 200, determine the downlink channel change situation.

[0175] Step 210: Determine the value of the PTI reported this time according to the determined change of the downlink channel.

[0176] Wherein, step 200 and step 210 may be executed when the PTI needs to be reported, or after the last PTI is reported and before the PTI needs to be reported this time.

[0177] The technical solution provided by the embodiment of the present invention provides an implementation method for determining PTI, that is, the feedback report type reported by the terminal, so as to control the feedback reporting ...

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Abstract

The invention discloses a value determination method and a value determination device for a precoding type indictor. The value determination method comprises steps of determining a changing condition of a downlink channel, and determining a value of the precoding type indicator PTI which is reported this time according to a downlink channel changing condition. The invention provides a realization method and device which determine the PTI which is a feedback report type reported by a terminal so as to control the feedback reporting process.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a method and device for determining a value of a precoding type indication. Background technique [0002] Spatial multiplexing is a multi-antenna transmission method commonly used in wireless communication systems. For example, the transmission modes 4, 9 and 10 of the Physical Downlink Shared Channel (PDSCH) of the Long Term Evolution (LTE) system all belong to the multi-antenna transmission mode of spatial multiplexing. [0003] In order to improve the transmission performance, the receiver can feed back the current channel state information to the sender. For example, in order to improve the transmission performance of the PDSCH in the LTE system, the terminal generally feeds back channel state information (CSI, Channel State Information) to the base station, including: Channel Quality Indicator (Channel Quality Indicator, CQI), Precoding Matrix Indicat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/00
CPCH04L1/00
Inventor 白文岭
Owner DATANG MOBILE COMM EQUIP CO LTD