A method, device and system for sending signals

Abstract

A method, device and system for sending a signal. The method is applicable to a system with a remote radio unit (RRU) and a baseband processing unit (BBU), and comprises steps of: receiving a common public radio interface CPRI signal sent by the RRU; performing channel separation processing on the CPRI signal, to obtain a channel signal after the separation processing, the channel signal after the separation processing at least comprising a physical uplink shared channel signal; performing multi-antenna equalization processing on the physical uplink shared channel signal; and sending the processed physical uplink shared channel signal to the BBU. According to the method provided in the present invention, a multi-antenna data stream may be compressed, which improves a data compression ratio, and lowers data transmission cost.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a method, device and system for sending signals. Background technique [0002] In the mobile communication system, the C-RAN (Cloud Radio Access Network, cloud-based deployment of access network) system has become a technology that manufacturers and operators generally pay attention to. It is a larger-scale wireless access network that applies cloud computing technology. into the system. C-RAN centralizes the BBU (Base-band Unit, baseband processing unit) of multiple base stations through optical fiber or optical transmission network, and pulls the RRU (Radio Remote Unit, radio frequency remote unit) far away for signal coverage. Compared with the traditional deployment method, this deployment method has the advantages of reducing the cost of building a station, saving energy, facilitating maintenance, and improving the spectrum efficiency of joint transmission. ...

AI Technical Summary

Problems solved by technology

[0004] In the process of realizing the present invention, the inventors found that there are at least the following problems in the prior art: in the method provided by the prior art, the CPRI signal is directly compressed in the time domain. Due to the limitation of the compression method itself, the compression rate is relatively low. Low

This is because, in the communication system, the signal data will inevitably change due to the influence of various factors during the transmission process. When the prior art compresses the uplink signal data, it does not consider the internal transformation rules and Logically associated, so the signal data has a lower compression rate when using traditional compression methods

On the other hand, the compression methods in the prior art are suitable for single-antenna data streams, but not suitable for multi-antenna data streams

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