Signal sending method, device and system

Abstract

The invention relates to the technical field of communication, in particular to a signal sending method, device and system. The method is applied in a system provided with a radio remote unit RRU and a baseband processing unit BBU. The method includes receiving CPRI (common public radio interface) signals sent by the radio remote unit RRU; performing channel separation processing on the CPRI signals, acquiring channel signals, at least containing physical uplink shared channel signals, after the separation processing; performing multi-antenna equalization processing on the physical uplink shared channel signals; sending the processed physical uplink shared channel signals to the baseband processing unit BBU. The method has the advantages that multi-antenna data streams can be compressed, data compression rate is increased, and data transmitting cost is reduced.

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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