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

CSI feedback method, device, terminal, base station and storage medium

A terminal and reporting technology, applied in the field of CSI feedback, can solve problems such as timeliness and accuracy degradation, impact on feedback timing, impact on precoding or beamforming final performance, etc.

Active Publication Date: 2022-06-24
ZTE CORP
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, CSI feedback will generate a certain delay. If the timing delay of CSI feedback is large, the timeliness and accuracy of reporting CSI will deteriorate, thereby affecting the final performance of precoding or beamforming.
At the same time, due to the complexity of the terminal, the terminal will have different capabilities to process CSI, which also affects the CSI feedback timing of the UE to a certain extent.

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
  • CSI feedback method, device, terminal, base station and storage medium
  • CSI feedback method, device, terminal, base station and storage medium
  • CSI feedback method, device, terminal, base station and storage medium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Embodiments of the present invention provide a method for channel state information CSI feedback, such as figure 1 As shown, the method includes:

[0033] S101. Determine whether the CSI processing unit CPU needs to be rewritten according to the triggered first-type CSI report and / or according to the signaling or signaling format used to trigger the first-type CSI report;

[0034] S102, when it is determined that rewriting is required, rewrite W CPUs; where W≤X, where X is the maximum number of CPUs supported by the terminal for processing CSI reports.

[0035] In this embodiment of the present invention, the method is executed on the terminal side.

[0036] In this embodiment of the present invention, for a terminal that can support at most X CPUs, when it is determined that rewriting is required according to the triggered first-type CSI or the signaling that triggers the first-type CSI, W CPUs are rewritten, that is, The first type of CSI is made to rewrite the W CP...

Embodiment 2

[0092] In this embodiment of the present invention, for a terminal that can support at most X CPUs, when it is configured with CSI reporting to perform periodic or semi-persistent feedback, when at least one of the following conditions is satisfied, the terminal performs fast periodic or semi-persistent feedback CSI feedback.

[0093] Condition 1: The base station only configures this CSI report;

[0094] Condition 2: From the last symbol of the channel (such as PUCCH or PUSCH) on which the CSI report is transmitted each time to the corresponding CSI reference resource, the report occupies all X CPUs;

[0095] Condition 3: From the last symbol of the channel (eg PUCCH or PUSCH) on which the CSI report is transmitted each time to the latest CSI-RS and / or CSI-IM before the corresponding CSI reference resource, the report occupies all X CPU.

[0096] In addition, the fast periodic or semi-persistent CSI feedback refers to the last symbol of the channel on which the CSI report i...

Embodiment 3

[0136] An embodiment of the present invention provides a method for channel state information CSI feedback, the method comprising:

[0137] Determine whether the CSI processing unit CPU needs to be rewritten according to the triggered first-type CSI report and / or according to the signaling or signaling format used to trigger the first-type CSI report; when it is determined that rewriting is required, rewrite the Write W to the CPU. where X is the maximum number of CPUs supported by the terminal for processing CSI reports. That is to say, for a terminal that can support at most X CPUs, when the triggered CSI or the signaling that triggers the CSI satisfies the first condition, the CSI first occupies W CPUs, or W CPUs are used by the terminal. The CSI is rewritten, or W CPUs are emptied, or the original CSI in W CPUs is interrupted.

[0138] In this embodiment of the present invention, for a specific type of CSI, the terminal reports to the base station the required minimum va...

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 discloses a CSI feedback method, device, terminal, base station and storage medium, which are used to realize the operation on the CPU owned by the terminal, so as to meet the timing requirements of different services for CSI feedback. The method includes: determining whether the CSI processing unit CPU needs to be rewritten according to the triggered first-type CSI report, and / or according to the signaling or signaling format used to trigger the first-type CSI report; When rewriting, rewrite W CPUs; said W≤X, where X is the maximum number of CPUs supported by the terminal for processing CSI reports.

Description

technical field [0001] The present invention relates to the field of communication technologies, and in particular, to a method, apparatus, terminal, base station and storage medium for CSI feedback. Background technique [0002] In a MIMO (Multiple input multiple output, multiple input multiple output technology) wireless communication system, the purpose of improving transmission efficiency and reliability can be achieved by performing precoding or beamforming on multiple transmitting antennas. In order to achieve high-performance precoding or beamforming, the precoding matrix or the beamforming vector needs to be well matched to the channel, which requires that the transmitter can better obtain CSI (Channel State Information, channel state information). [0003] Generally speaking, the CSI feedback requirement of a UE (User Equipment, terminal) is included in a given time period, and multiple CSI reports are processed simultaneously. In an existing wireless communication...

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): H04B7/06H04B7/0413H04L5/00
CPCH04B7/0626H04B7/0413H04L5/0048H04L5/0057H04L5/001H04B7/0645H04L1/0026H04L1/0027H04L5/0053H04W72/23
Inventor 吴昊鲁照华蒋创新韩祥辉夏树强高波
Owner ZTE CORP