Method and device for transmitting wireless base band data and radio frequency zooming-out module RRU

Abstract

The invention discloses a method for transmitting wireless base band data. The method comprises the steps of receiving downlink base band signals transmitted by a base band processing unit (BBU), processing the downlink base band signals, modulating the downlink base band signals into the downlink intermediate frequency analog signals, and outputting the downlink intermediate frequency analog signals to an Ethernet line; obtaining and detecting uplink intermediate frequency analog signals fed back from the Ethernet line, and processing the uplink intermediate frequency analog signals; using the processed uplink intermediate frequency analog signals as feedback input of digital pre-distortion (DPD) to obtain the intermediate frequency analog signals from the Ethernet line, converting the intermediate frequency analog signals into the uplink base band signals, and sending the uplink base band signals to the BBU. The invention further provides a corresponding device for transmitting the wireless base band data and a radio frequency zooming-out module RRU. According to the scheme, by means of EIP equipment, the wireless base band signals can be transmitted between the BBU and the RRU, and therefore the problem of high network deployment cost due to the fact that optical fiber or a microwave transmission network needs to be laid again can be avoided.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a method and device for transmitting wireless baseband data and a radio remote module RRU. Background technique [0002] In the 3GPP GSM / UMTS / LTE wireless access system, the networking mode of the distributed base station BBU (BuildingBase band Unit, baseband processing unit) + RRU (Radio Remote Unit, radio remote module) has been widely used, and the BBU The transmission data between RRU and RRU is baseband IQ data, and the transmission rate of baseband IQ data is generally required to be 1.2288Gbps or 2.4576Gbps (depending on different carrier capacities). In order to meet the high-speed transmission requirements of baseband IQ data, the industry currently uses optical fiber transmission or high-band and large-bandwidth microwave equipment transmission. However, these two transmission methods may not be available in actual network deployment, and operator...

AI Technical Summary

Problems solved by technology

In order to meet the high-speed transmission requirements of baseband IQ data, the industry currently uses optical fiber transmission or high-band and large-bandwidth microwave equipment transmission. However, these two transmission methods may not be available in actual network deployment, and operators need to re-lay Optical fiber or microwave transmission network, resulting in higher network deployment costs

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