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Method and device for transmitting IQ (Intelligence Quotient) data

A data transmission method and data technology, applied in digital transmission systems, transmission systems, baseband systems, etc., can solve problems such as increased hardware costs and surge in CPRI interface traffic, and achieve the effect of reducing bits and improving transmission efficiency

Active Publication Date: 2011-11-09
HUAWEI TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The inventors have found that the prior art has the following deficiencies: in the case of increased bandwidth or carrier, directly transmitting IQ data will cause a sharp increase in CPRI interface traffic, and it is necessary to physically increase the number of CPRI transmission interfaces or increase the line rate of CPRI in order to be able to Adapt to the needs of greater IQ data traffic
This results in a substantial increase in hardware costs

Method used

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  • Method and device for transmitting IQ (Intelligence Quotient) data
  • Method and device for transmitting IQ (Intelligence Quotient) data
  • Method and device for transmitting IQ (Intelligence Quotient) data

Examples

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Embodiment Construction

[0021] To make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the embodiments of the present invention will be further described in detail below in conjunction with the embodiments and the accompanying drawings. Here, the exemplary embodiments and descriptions of the present invention are used to explain the present invention, but not to limit the present invention.

[0022] See figure 2 , the method provided for an embodiment of the present invention, comprising:

[0023] S101: Determine target sample point values ​​for k sample points in the IQ data to be transmitted.

[0024] The k samples here are continuously transmitted IQ data, which can be regarded as a frame or a block.

[0025] K samples may refer to the total number of I data and Q data. For example, if k is equal to 8, it means that there are 4 I data and 4 Q data in the sample point. Since I and Q data always appear in pairs, Therefore k is an integer mu...

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Abstract

The embodiment of the invention provides a method and method for transmitting IQ data. The method comprises the steps of: determining target sample point values for k sample points in IQ data to be transmitted, wherein k is an integer greater than or equal to 2; determining, according to the target sample point value, the public part of the k sample points and an index of the public part, and the mantissa part of the value of each sample point in the k sample points relative to the public part; and transmitting the index of the public part and the mantissa part of each sample point through CPRI (Common Public Radio Interface) frames. The common public part is determined for multiple sample points and the mantissa part of each sample point is figured out according to the public part, therefore, the bits of the sample points can be reduced, and the transmission efficiency of the IQ data is enhanced.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to an IQ data transmission method and device. Background technique [0002] CPRI (Common Public Radio Interface) is an interface standard between REC (Radio Equipment Controller, wireless equipment controller) and RE (Radio Equipment, wireless equipment) in wireless base station equipment developed by several communication equipment manufacturers . [0003] Taking the GSM system as an example, the existing CPRI IQ data transmission format is shown in the figure below. Each sampling point is represented by I and Q, and is directly interleaved and transmitted according to the quantization bit width I and Q. [0004] The inventors have found that the prior art has the following deficiencies: in the case of increased bandwidth or carrier, directly transmitting IQ data will cause a sharp increase in CPRI interface traffic, and it is necessary to physically increas...

Claims

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Application Information

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IPC IPC(8): H04W28/06H04B7/26
CPCH04L25/4921H04L27/3405H03M7/55
Inventor 吉雅洛夫斯基・高尔基庞可夫・伊戈尔莫宁・谢尔盖宁科武杰钟政良李强
Owner HUAWEI TECH CO LTD
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