Base-band main processing unit, digital front end, baseband unit and data transmission method

Abstract

The present invention provides a base-band main processing unit, a digital front end, a baseband unit and a data transmission method. The baseband main processing unit comprises a first generating module used for obtaining the effective bit data of a downlink common control channel according to the downlink common control channel data; a second generating module used for generating the resource mapping information of the effective bit data; a sending module used for sending the effective bit data of the downlink common control channel and the resource mapping information to the digital front end, so that the digital front end processes the effective bit data of the downlink common control channel, obtains the processed downlink common control channel data and sends the data. According to the technical scheme provided by the present invention, the baseband main processing unit and the digital front end process the downlink common control channel data, thereby facilitating the data interaction after baseband pooling, and supporting the cooperative processing and carrier wave dynamic migration better. The digital front end can be placed in a radio remote unit, thereby reducing the front-haul transmission bandwidth.

Description

technical field [0001] The invention relates to the communication field, in particular to a baseband main processing unit, a digital front end, a baseband unit and a data transmission method. Background technique [0002] The long-term evolution of 3GPP adopts OFDM (Orthogonal Frequency Division Multiplexing, Orthogonal Frequency Division Multiplexing) and MIMO (Multiple-Input Multiple-Output, Multiple-Input Multiple-Output) as the only standards for its wireless network evolution. Under the 20MHz spectrum bandwidth, it can provide the peak rate of downlink 100Mbit / s and uplink 50Mbit / s. It improves the performance of cell edge users, improves cell energy and reduces system delay. Among them, the distributed base station separates the BBU (baseband unit, baseband part) of the base station from the RRU / RRH (radio remote unit / head, radio frequency part). The BBU is usually placed in the equipment room and connected to the RRU near the antenna through an optical fiber. The B...

AI Technical Summary

Problems solved by technology

[0004] The implementation scheme of the above existing products The downlink processing of each cell is a closed process, which is difficult to meet the needs of inter-cell cooperative processing

In addition, in the existing product solutions, the BBU and RRU have a point-to-point mapping relationship before, and it is difficult to realize the flexible exchange of data between the BBU and RRU.

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