Channel quality indicator CQI information correction method and apparatus thereof

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

Active Publication Date: 2011-11-23
DATANG MOBILE COMM EQUIP CO LTD
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  • Abstract
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  • Claims
  • Application Information

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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 cycl

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
Comparison scheme
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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: Accumulate the accumulated CQI adjustment amount corresponding to the first moment with the corresponding first confidence level and the periodic accumulated CQI adjustment amount to obtain the accumulated CQI adjustment amount corresponding to the second moment;

[0058] 104: Accumulate the accumulated CQI adjustment amount corresponding to the second moment with the second CQI information at the corresponding second confidence level, to obtain the second CQI information after correction.

[0059] In the me...

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 amount 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 accumulate the accumulated CQI adjustment amount corresponding to the first moment obtained by the accumulation module 301 with the corresponding first confidence degree and the periodic accumulated CQI adjustment amount obtained by the calculation module 302 to obtain the accumulated CQI corresponding to the second moment adjustment amount;

[0106] The correction module 304 is configured to accum...

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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 Indicator) 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 informat...

Claims

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Application Information

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