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Channel quality indicator CQI information correction method and apparatus thereof

A channel quality indication and incremental technology, applied in the direction of correct operation test, digital transmission system, electrical components, etc., can solve the problems of less number of times of scheduling, short reporting period, low CQI accuracy, etc., to increase the number of samples, The effect of improving accuracy

Active Publication Date: 2013-08-14
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Whenever the eNB obtains a new CQI value, the eNB will clear the previous CQI adjustment amount to zero. If the number of samples of the CQI adjustment information in this cycle is small, such as the UE reporting cycle is short or the number of times the UE is scheduled in a cycle Less, it will cause the accuracy of this CQI correction to be relatively low

Method used

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  • Channel quality indicator CQI information correction method and apparatus thereof
  • Channel quality indicator CQI information correction method and apparatus thereof
  • Channel quality indicator CQI information correction method and apparatus thereof

Examples

Experimental program
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Embodiment 1

[0054] see figure 1 , this embodiment provides a method for correcting channel quality indication information, including:

[0055] 101: After obtaining the first CQI information at the first moment, calculate the cumulative CQI adjustment amount corresponding to the first moment;

[0056] 102: After acquiring the second CQI information at the second moment, calculate the period cumulative CQI adjustment amount between the first moment and the second moment;

[0057] 103: Multiply the accumulated CQI adjustment amount corresponding to the first moment by the corresponding first confidence level and accumulate the periodic accumulated CQI adjustment amount to obtain the accumulated CQI adjustment amount corresponding to the second moment;

[0058] 104: Multiply the cumulative CQI adjustment amount corresponding to the second moment by the corresponding second confidence level and accumulate the second CQI information to obtain the corrected second CQI information.

[0059] In ...

Embodiment 2

[0102] see image 3 , this embodiment provides an apparatus for correcting channel quality indication information, including:

[0103] An accumulation module 301, configured to calculate the cumulative CQI adjustment corresponding to the first moment after the first CQI information is acquired at the first moment;

[0104] Calculation module 302, configured to calculate the periodic cumulative CQI adjustment amount between the first moment and the second moment after the second CQI information is acquired at the second moment;

[0105] The accumulation module 303 is used to multiply the accumulated CQI adjustment amount corresponding to the first moment obtained by the accumulation module 301 by the corresponding first confidence level and accumulate the periodic accumulated CQI adjustment amount obtained by the calculation module 302 to obtain the accumulated CQI adjustment amount corresponding to the second moment. CQI adjustment amount;

[0106] A correction module 304, c...

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Abstract

The invention discloses a channel quality indicator information correction method and an apparatus thereof, and belongs to wireless communication field. The method comprises the following steps: after obtaining first CQI information at a first time, calculating a cumulative adjustment amount of CQI corresponding to the first time; after obtaining second CQI information at a second time, calculating a period cumulative CQI adjustment amount between the first time and the second time; adding the period cumulative CQI adjustment amount with the cumulative CQI adjustment amount corresponding to the first time multiplied by corresponding first degree of confidence to obtain a cumulative CQI adjustment amount corresponding to the second time; adding the second CQI information with the cumulative CQI adjustment amount corresponding to the second time multiplied by corresponding second degree of confidence with to obtain corrected second CQI information. The apparatus in the invention comprises a corresponding accumulation module, a corresponding calculation module, a corresponding adding module, and a corresponding correction module. According to the invention, through preserving cumulative CQI adjustment amounts, utilizing prior CQI adjustment information, present CQI is corrected, sample quality of CQI adjustment is increased, and accuracy of CQI correction is effectively improved.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to a method and a device for correcting CQI information of a channel quality indicator. Background technique [0002] CQI (Channel Quality Indicator, channel quality indication) information includes uplink CQI and downlink CQI. The uplink CQI refers to the SINR (Signal to Interference plus Noise Ratio, signal to interference and noise ratio) obtained by the eNB (evolved Node B, evolved base station); the downlink CQI refers to the UE (User Equipment, user equipment) received by the eNB. ) Feedback CQI value. Inaccurate CQI information may be caused by factors such as noise power playing a dominant role in low SNR conditions, mismatch between the CQI fed back by UE and its own demodulation performance, and reconstruction of RI reported by eNB to UE. Therefore, the eNB needs to correct the acquired CQI information. [0003] There is an existing method for correcting CQI inform...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/24H04L1/00
Inventor 汪玲史宝玉于洋李琼
Owner DATANG MOBILE COMM EQUIP CO LTD