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A channel state information configuration method, feedback method and device

A channel state information and configuration method technology, which is applied in the directions of transmission path sub-channel allocation, signaling allocation, pilot signal allocation, etc., can solve problems such as inconsistent understanding of CSI-RS, and achieve the effect of ensuring consistency

Active Publication Date: 2021-11-19
CHINA MOBILE COMM LTD RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the LTE-A system, after the base station sends the multi-port CSI-RS to the terminal, the terminal may understand the multi-port CSI-RS based on various methods, and thus report the corresponding precoding matrix indicator (Recoding Matrix Indicator, PMI for short) ), Channel Quality Indicator (CQI for short) and / or Rank Indication (RI for short), which may cause inconsistencies in the understanding of CSI-RS by the base station and the terminal side

Method used

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  • A channel state information configuration method, feedback method and device
  • A channel state information configuration method, feedback method and device
  • A channel state information configuration method, feedback method and device

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Embodiment 1

[0094] Please refer to Figure 4 , Figure 4 It is a schematic diagram of the application scenario of Embodiment 1 of the present invention. In this embodiment, it is applied to the transmission scenario of high-frequency single-user multiple-input multiple-output technology (SU-MIMO). The base station has two antenna panels (panels), and the terminal has two antenna panels. Antenna panel, base station supports 1~2 streams. Different antenna panels of the base station use analog beams (beam1) in the same direction, and support multiple streams through different polarizations. In the figure, the ellipse represents the analog beam, and the direction of the ellipse represents the direction of the beam.

[0095] In the embodiment of the present invention, the base station sends CSI-RS configuration information to the terminal, the configuration information includes instructing the terminal to understand the CSI-RS according to the first method, and to calculate at least one of PMI...

Embodiment 2

[0097] Please refer to Figure 5 , Figure 5 It is a schematic diagram of the application scenario of Embodiment 2 of the present invention. In this embodiment, it is applied to the transmission scenario of high-frequency single-user multiple-input multiple-output technology (SU-MIMO). The base station has two antenna panels (panels), and the terminal has two antenna panels. Antenna panel, the base station supports 1 to 4 streams. Different antenna panels of the base station use analog beams in different directions (beam1 and beam2), and support multiple streams through different polarizations and different analog beams. In the figure, the ellipse represents the analog beam, and the orientation of the ellipse Represents the direction of the beam.

[0098] In the embodiment of the present invention, the base station sends CSI-RS configuration information to the terminal, the configuration information includes instructing the terminal to understand the CSI-RS according to the f...

Embodiment 3

[0102] Please refer to Image 6 , Image 6 It is a schematic diagram of the application scenario of Embodiment 3 of the present invention. In this embodiment, it is applied to the transmission scenario of high-frequency single-user multiple-input multiple-output technology (SU-MIMO). The base station has two antenna panels (panels), and the terminal has two antenna panels. Antenna panel, the base station supports 1 to 4 streams. Different antenna panels of the base station use analog beams in different directions (beam1 and beam2), and support multiple streams through different polarizations and different analog beams. In the figure, the ellipse represents the analog beam, and the orientation of the ellipse Represents the direction of the beam.

[0103] In the embodiment of the present invention, the base station sends CSI-RS configuration information to the terminal, the configuration information includes instructing the terminal to understand the CSI-RS according to the fir...

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Abstract

The present invention provides a channel state information configuration method, feedback method and device. The channel state information configuration method is applied to a base station, including: sending non-zero power CSI-RS configuration information to a terminal, and the configuration information includes: indicating The terminal understands the received CSI-RS according to the first method, the second method or the third method; the first method is: the received CSI-RS is understood as the CSI-RS of the X port; the second method is: the received The CSI-RS is understood as the CSI-RS of N groups of X / N ports; the third method is: the received CSI-RS is understood as the CSI-RS of X ports and the CSI-RS of N groups of X / N ports RS. In the present invention, the terminal can understand the CSI-RS sent by the base station according to the understanding method of the CSI-RS sent by the base station, so as to perform channel measurement and ensure the consistency of understanding of the CSI-RS by the base station and the terminal.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a channel state information configuration method, feedback method and device. Background technique [0002] In the LTE-A system, in order to support higher-order Multiple Input Multiple Output (MIMO) transmission (supporting up to 8 data layers), a Channel State Information-Reference Signal (CSI-based) is introduced. CSI-RS for short) performs channel state information (Channel State Information, CSI for short) measurement. CSI-RS includes two types: non-zero power (Non-ZeroPower, NZP) CSI-RS and zero power (Zero Power, ZP) CSI-RS, wherein, non-zero power CSI-RS consists of a group of unprecoded The known signal of , that is, the pilot sequence, is sent by the corresponding antenna port (port) on the corresponding CSI-RS resource, and is used to measure the channel coefficient of the corresponding port. The zero-power CSI-RS is composed of a group of blan...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L5/00H04B7/06H04W72/04
CPCH04L5/0048H04B7/0626H04L5/0053H04W72/23
Inventor 王飞
Owner CHINA MOBILE COMM LTD RES INST