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Method for determining modulation and encoding scheme

A coding scheme and a determined technology, applied in the direction of using the return channel for error prevention/detection, electrical components, digital transmission systems, etc., can solve problems such as too frequent adjustment, unreliability, modulation and coding scheme suggestion values ​​cannot converge, etc.

Inactive Publication Date: 2010-10-13
LINK TECH INC
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the modulation and coding scheme of the transmitting end 201 is set directly according to the suggested value of the modulation and coding scheme returned by the receiving end 202, when the rate of change of the suggested value of the modulation and coding scheme returned by the receiving end 202 is too large , not only the transmitter 201 will adjust its modulation and coding scheme too frequently, but also the suggested value of the modulation and coding scheme returned by the receiver 202 cannot converge and is not reliable
On the other hand, if only the adjustment methods of the above two modulation and coding schemes are used without referring to the suggested value of the modulation and coding scheme returned by the receiving end 202, the information provided by the receiving end 202 cannot be fully utilized.

Method used

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  • Method for determining modulation and encoding scheme
  • Method for determining modulation and encoding scheme
  • Method for determining modulation and encoding scheme

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Embodiment Construction

[0012] image 3 A flowchart showing a method for determining a modulation and coding scheme according to an embodiment of the present invention. In step 301, an initial modulation and coding scheme is set, and step 302 is entered. In step 302 , transmit a signal according to the selected modulation and coding scheme, receive the reception completion signal of the transmitted signal and the modulation and coding scheme suggested by the receiving end, and proceed to step 303 . In step 303, the value of the receiving complete signal is judged. If the receiving completion signal is 1, go to step 304, otherwise go to step 305. In step 304, increase the weight of the modulation and coding scheme whose data transmission rate is greater than or equal to the selected modulation and coding scheme, and decrease the weight of the modulation and coding scheme whose data transmission rate is less than the selected modulation and coding scheme, and enter step 306. In step 305, increase th...

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Abstract

The invention relates to a method for determining a modulation and encoding scheme, which comprises the following steps: sending signals according to different modulation and encoding schemes, adjusting the weights of all the modulation and encoding schemes according to the receiving quality of the sent signals, adjusting the weights of the modulation and encoding schemes according to suggested values of the modulation and encoding schemes and determining the modulation and encoding scheme according to the weights of the modulation and encoding schemes.

Description

technical field [0001] The present invention relates to a method for adjusting a modulation and coding scheme of a communication system, specifically a method for adjusting a modulation and coding scheme according to a suggested value of the modulation and coding scheme. Background technique [0002] In the application of wireless local area network Wi-Fi, for example, in the application of the system conforming to the 802.11n specification specified by the Institute of Electrical and Electronics Engineers (IEEE), the receiving end is required to suggest the modulation and modulation of the sending end according to the transmission environment. A coding scheme (Modulation and Coding Scheme, MCS), and real-time adjustment of the modulation and coding scheme according to the change of the transmission environment to achieve the maximum throughput (throughput). [0003] Among the adjustment methods of various modulation and coding schemes, the automatic rate fallback (Automatic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/06H04L1/00H04L1/16
Inventor 廖彦钦杜勇赐吴承轩陈俊才
Owner LINK TECH INC