Method and device for reporting periodic CSI (Channel Status Information)

A periodic and pre-configured technology, applied in transmission path sub-channel allocation, digital transmission system, signaling allocation, etc., can solve problems such as CSI reporting failure, and achieve the effect of reducing the probability of conflict

Inactive Publication Date: 2018-09-25
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in carrier aggregation, the CSI reporting period of different serving cells may be the same, and the UE can only report the periodic CSI of one cell at the same time, which will cause the periodic CSI of a certain carrier to always be reported.

Method used

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  • Method and device for reporting periodic CSI (Channel Status Information)
  • Method and device for reporting periodic CSI (Channel Status Information)
  • Method and device for reporting periodic CSI (Channel Status Information)

Examples

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no. 1 example

[0072] figure 1 is a flow chart of a method for reporting periodic CSI provided by an embodiment of the present invention, such as figure 1 As shown, the method for periodic CSI reporting includes the following steps:

[0073] Step 101 : Prioritize the reporting of all periodic CSIs that need to be reported.

[0074] In this embodiment, periodic CSI is composed of RI, PMI, wideband CQI and subband CQI. The periodic CSI that needs to be reported can be RI, PMI, wideband CQI and subband CQI or any combination of RI, PMI, wideband CQI and subband CQI. For example, the base station configures the periodic CSI that needs to be reported on the main carrier including RI and PMI+wideband CQI, Wherein, PMI+wideband CQI means that PMI and wideband CQI are reported at the same time, so the RI and PMI+wideband CQI need to be sorted, and the above description is only an example and not a limitation.

[0075] Optionally, the order of reporting priorities is: the reporting priority of the...

no. 2 example

[0090] see figure 2 , figure 2 is a flow chart of another periodic CSI reporting method provided by an embodiment of the present invention, such as figure 2 shown, including the following steps:

[0091] Step 201, sort all periodic CSIs that need to be reported.

[0092] Specifically, see image 3 , and perform reporting priority sorting on all periodic CSIs that need to be reported, including the following steps:

[0093] Step 301, according to the periodic CSI reporting configuration of the base station, obtain the types of periodic CSI that all carriers need to report.

[0094] Wherein, the base station periodical CSI reporting configuration process includes:

[0095] Configure the threshold of the maximum number of reports for the content of periodic CSI reports;

[0096] Configure the value change threshold for the periodic CSI report content;

[0097] Configure the change threshold for the reporting content of periodic CSI;

[0098] Configure the maximum disca...

no. 3 example

[0149] Figure 4 It is a schematic structural diagram of a periodic CSI reporting device according to an embodiment of the present invention, see Figure 4 , a device structure 400 for periodic CSI reporting, including: a sorting module 401, a first judging module 402, a filtering module 403 and a first reporting module 404, wherein:

[0150] The sorting module 401 is configured to sort the reporting priority of all periodic CSIs that need to be reported.

[0151] Optionally, the sorting module 401 includes: a type acquisition unit and a sorting unit, wherein,

[0152] A type obtaining unit, configured to obtain the types of periodic CSI that all carriers need to report according to the periodic CSI reporting configuration of the base station;

[0153] The sorting unit is configured to sort the types of periodic CSI that need to be reported by all carriers according to the pre-configured periodic CSI reporting priority.

[0154] Wherein, the pre-configured periodic CSI repo...

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Abstract

The embodiment of the invention provides a method and device for reporting periodic CSI (Channel Status Information). The method comprises the steps of: carrying out reporting priority ranking on allperiodic CSI which needs to be reported; sequentially judging whether all the ranked periodic CSI which needs to be reported reaches a reporting moment; if the reporting moment of the periodic CSI isreached, carrying out filtering processing on the periodic CSI reaching the reporting moment to obtain a filtering result; and if the filtering result represents that the periodic CSI reaching the reporting moment needs to be reported, reporting the periodic CSI reaching the reporting moment. According to the method and device for reporting the periodic CSI, a probability that the periodic CSI hasa conflict can be reduced. When reporting periods of the periodic CSI in different service regions are conflicted, CSI with higher reference value can be reported.

Description

technical field [0001] The present invention relates to the field of mobile communication, in particular to a method and device for reporting periodic CSI (Channel Status Information, channel state information). Background technique [0002] Wireless channel conditions are often constantly changing. For example: UE (User Equipment, user equipment) moves from an area with good channel conditions to an area with poor channel conditions; or UE moves on a street with tall buildings on both sides, then the signal on the street along the signal propagation direction will be strengthens, while the signal on the street perpendicular to the direction of propagation will weaken. [0003] Assuming that in the case of good channel quality, the downlink uses QPSK (Quadrature Phase Shift Keyin, Quadrature Phase Shift Keying) instead of high-order modulation (for example, 16QAM / 64QAM) for transmission, the utilization rate of the spectrum will be become low and cause a drop in throughput...

Claims

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Application Information

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IPC IPC(8): H04W72/10H04W72/12H04L5/00
CPCH04L5/0053H04W72/56H04W72/569
Inventor 黄文珺
Owner ZTE CORP
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