METHOD FOR TRANSMITTING DATA BETWEEN BASEBAND UNIT BBU AND REMOTE RADIO UNIT RRU, AND DATA TRANSMISSION APPARATUS

摘要

The present invention discloses a method for transmitting data between a baseband processing unit BBU and a remote radio unit RRU, and a data transmission apparatus. The RRU selects partial data in received data, and sends the partial data to the BBU by using a common public interface CPRI; or the BBU performs only channel coding processing or only channel coding processing and constellation mapping processing on the data, and sends processed data to the RRU. Then the RRU performs constellation mapping processing, multiple-antenna multiple-input multiple-output MIMO coding processing, and orthogonal frequency division multiplexing OFDM symbol generation processing on the data, or the RRU performs MIMO coding processing and OFDM symbol generation processing on the data. That is, steps in which data redundancy is added are executed by the RRU.

主权项

1. A method for transmitting data between a baseband unit (BBU) and a remote radio unit (RRU), the method comprising:
receiving, by the RRU, data by using N groups of receive antennas in the RRU; and selecting, by the RRU, partial data in the received data, and sending the partial data to the BBU by using a common public interface (CPRI).