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Method and equipment for data transmission

A data transmission method and equipment technology, applied in optical fiber transmission, optical fiber radio, etc., can solve the problems of large demand for Ir interface optical fiber, complex engineering implementation, and increased equipment cost, so as to reduce equipment cost, simplify complexity, and reduce demand. Effect

Active Publication Date: 2015-06-17
DATANG MOBILE COMM EQUIP CO LTD
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a data transmission method and equipment to solve the problems of increased equipment cost and complex engineering implementation due to the large demand for optical fibers at the Ir interface

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  • Method and equipment for data transmission
  • Method and equipment for data transmission
  • Method and equipment for data transmission

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Embodiment Construction

[0037] An embodiment of the present invention provides a data transmission method, the implementation of which is as follows figure 1 As shown, it specifically includes the following operations:

[0038] In step 100, the RRU performs down-sampling processing on the uplink signal according to P / Q times, to obtain an uplink signal with a second sampling rate.

[0039] Wherein, both P and Q are positive integers, and P

[0040] In each embodiment of the present invention, under the current system bandwidth, the sampling rate suggested in the implementation of existing products is called the initial sampling rate, and the sampling rate after the downsampling process is called the second sampling rate. The second sampling rate is P / Q times the initial sampling rate.

[0041] In step 110, the RRU performs quantization and compression processing on the down-sampled uplink signal according to a predetermined compression ratio.

[0042] The compression ratio refers to the bit wi...

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Abstract

The invention discloses a method and equipment for data transmission. The method includes: in the uplink direction, subjecting an uplink signal to down-sampling by an RRU (radio remote unit) according to a P / Q ratio to obtain an uplink signal with a second sampling rate, subjecting the down-sampled uplink signal to quantization compressing according to a preset compression ratio, sending the uplink signal subjected to quantization compressing to a BBU (baseband unit), and using the BBU for quantization decompressing of the uplink signal subjected to quantization compressing; and in the downlink direction, using the BBU for quantization compressing of a downlink signal with the second sampling rate according to the compression ratio, sending the downlink signal subjected to quantization compressing to the RRU, using the RRU for quantization decompressing of the downlink signal subjected to quantization compressing, and subjecting the downlink signal after quantization decompressing to up-sampling according to a Q / P ratio. By means of combination of down-sampling and quantization compressing, the volume of data transmitted through an interface Ir is effectively compressed.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a data transmission method and equipment. Background technique [0002] The eNB (base station in the LTE system) in the LTE (Long Term Evolution, long-term evolution) / LTE-A (long-term evolution upgrade) system is a distributed base station device, which consists of a BBU (Base Band Unit, baseband processing unit) and an RRU (Radio Remote Unit, radio frequency remote unit) constitutes. Such as image 3 As shown, the communication interface between the RRU and the BBU is an Ir interface. At present, the Ir interface between the RRU and the BBU is realized by optical fiber connection. [0003] What is transmitted on the Ir interface is a time-domain signal, and the communication standard stipulates the available system bandwidth and the sampling rate under different system bandwidths. Taking the LTE 20M system bandwidth as an example, the sampling rate realized by ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B10/2575
Inventor 任斌罗斐琼李琼
Owner DATANG MOBILE COMM EQUIP CO LTD