Method and device for transmitting IQ (Intelligence Quotient) data

Abstract

A method for transmitting IQ data and the corresponding device are provided in the embodiments of the present invention. The method includes: determining the target sample point value for the k sample points in the 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 its index, and the mantissa part of the value of each sample point in the k sample points which relatives to the public part; transmitting the index of the public part and the mantissa part of each sample point through Common Public Radio Interface (CPRI) frames. Determining the common public part of multiple sample points and calculating the mantissa part of each sample point according to the public part can reduce the bits of the sample points, and enhance the transmission efficiency of the IQ data.

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...

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

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