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Method and device used for adjusting demodulation threshold

A demodulation threshold and adjusted technology, applied in the field of communication, can solve the problems of increasing the amount of calculation and memory overhead, reducing the speed of adjustment, etc.

Inactive Publication Date: 2015-02-25
POTEVIO INFORMATION TECH
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Problems solved by technology

However, there are a large number of user terminals in each cell, and the processing of demodulation threshold adjustment, such as the above measurement and judgment, is performed for each user terminal, which greatly increases the amount of calculation and memory overhead, and reduces the speed of adjustment.

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  • Method and device used for adjusting demodulation threshold
  • Method and device used for adjusting demodulation threshold

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Embodiment Construction

[0100] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0101] The embodiment of the present invention proposes a method for adjusting the demodulation threshold, see figure 1 , the method includes the following steps:

[0102] Step 101: Divide the SINR interval corresponding to each order of MCS into multiple SINR sub-intervals.

[0103] Step 102: Count the used uplink SINR, uplink transmission MCS and corresponding detection results ACK / NACK for the uplink transmission data of all user terminals within the bandw...

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Abstract

The invention provides a method and device used for adjusting a demodulation threshold. The method includes the steps that an SINR interval corresponding to each step of MCS is divided into multiple SINR sub intervals; according to uplink transmission data of all user terminals in a bandwidth range of a cell, the uplink SINR, uplink transmission MCSs and corresponding detection results ACK / NACK in use are calculated; according to the calculated SINR, the detection result ACK / NACK corresponding to the SINR is classified into the SINR sub interval where the corresponding SINR is located; according to the detection result ACK / NACK classified into the corresponding SINR sub interval, whether the demodulation threshold needs to be adjusted currently is judged, if the answer is positive, an adjustment deviation value is calculated according to the corresponding SINR sub interval, and then the demodulation threshold is adjusted according to the adjustment deviation value. The steps of MCSs of all user terminals in the cell can undergo demodulation threshold adjustment simultaneously.

Description

technical field [0001] The present invention relates to communication technology, in particular to a method and device for adjusting demodulation threshold. Background technique [0002] In mobile communication systems, the demand for high-speed data services continues to grow. In order to transmit uplink data faster and more accurately, the base station needs to adaptively select the uplink modulation and coding scheme (MCS). MCSs of different orders correspond to different receiving signal-to-interference-noise ratios (SINRs), and the transmission performance of MCSs varies with the SINR. At present, the existing methods are usually measured by a block error rate of 10%, and the corresponding SINR when the block error rate of 10% is met is the demodulation threshold of the MCS. [0003] In order to adaptively select the uplink MCS, it is necessary to adjust the demodulation threshold of the MCS, that is, the SINR corresponding to the MCS. At present, the method of adjust...

Claims

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Application Information

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IPC IPC(8): H04W24/04H04L1/00
Inventor 朱颖
Owner POTEVIO INFORMATION TECH
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