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Method and device for reporting channel state information csi

A technology of channel state information and time-domain position, applied in the field of communication, can solve problems such as high cost and high complexity of CSI quantization feedback

Active Publication Date: 2021-01-22
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The present invention provides a method and device for reporting channel state information CSI to at least solve the problems of high complexity and high cost of CSI quantization feedback existing in the related art

Method used

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  • Method and device for reporting channel state information csi
  • Method and device for reporting channel state information csi
  • Method and device for reporting channel state information csi

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0091] This implementation method may include Embodiments 1, 2, and 3.

Embodiment 1

[0093] Set a combination of condition 1 (corresponding to the first condition above) and condition 2 (corresponding to the second condition above), which is used to determine whether to update the CSI; including the following combinations of condition 1 and condition 2 Certainly:

[0094] Condition 1 includes at least one of the following:

[0095] (1a) The current Process is configured with Class B, and K sets of pilots are configured, K>K B , K B is a positive integer;

[0096] (1b) The current Process is configured with Class B, and the total number of configured ports is N total Greater than or equal to N totalB , N totalB is an integer greater than or equal to 8;

[0097] (1c) The current Process is configured with Class A, and the total number of configured ports is N total Greater than or equal to N totalA , N totalA is an integer greater than or equal to 8;

[0098] Condition 2 includes at least one of the following:

[0099] (2a) Within X ms, the P-type CSI...

Embodiment 2

[0120] If the terminal judges that the first condition and the second condition are met, or the first, second and third conditions are met, the terminal will perform the following operations to reduce the complexity of CSI quantization processing:

[0121] The information content of the P-type CSI feedback information in the CSI reported by the terminal this time is the same as the information content of the P-type CSI feedback information reported last time that "corresponds to the same Process, has the same CSI type, and has CSI reference resources";

[0122] Or, the information content of the P-type CSI feedback information in the CSI reported by the terminal this time is the same as the information of the P-type CSI feedback information reported last time that "corresponds to the same Process, has the same CSI type, and the CSI reference resources belong to the same subframe set" same content;

[0123] Here, the P-type CSI information may be all M-type CSIs, or a part of M...

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Abstract

Provided are a method and device for reporting channel state information (CSI). The method comprises: determining, according to a first condition and a second condition, CSI to be reported, wherein the CSI to be reported comprises M types of CSI; and reporting the determined CSI to be reported. By means of the present invention, the problems in the related art that the quantized feedback of CSI is complex and have high costs are solved, thus achieving the effect of reducing the complexity and costs for the quantized feedback of CSI.

Description

technical field [0001] The present invention relates to the field of communications, in particular to a method and device for reporting channel state information (CSI). Background technique [0002] In a wireless communication system, the transmitting end and the receiving end generally use multiple antennas to transmit and receive to obtain a higher rate. One of the principles of multi-antenna technology is to use some characteristics of the channel to form multi-layer transmission that matches the characteristics of the channel. The radiation direction of the signal is very targeted, which can effectively improve the system performance and obtain significant performance without increasing the bandwidth and power. The performance improvement of is a very promising technology, which is widely used in current systems. The data transmission performance of a multi-antenna system mainly depends on the measurement and feedback of channel information. Therefore, the measurement ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/00H04L5/00H04B7/06
CPCH04B7/0626H04B7/0632H04B7/0639H04L1/0026H04L5/0053H04L5/0057H04W24/02
Inventor 陈艺戬李儒岳鲁照华吴昊肖华华蔡剑兴李永王瑜新
Owner ZTE CORP
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