Method and device for transmitting wireless baseband data, and remote radio module rru
A radio frequency remote module, wireless base technology, applied in transmission systems, digital transmission systems, error prevention and other directions, can solve the problem of high network deployment costs
Active Publication Date: 2019-09-13
NANJING ZHONGXING XIN SOFTWARE CO LTD
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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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[0076] It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention.
[0077] The invention provides a method for transmitting wireless baseband data, and can transmit Ethernet signals at the same time.
[0078] Reference figure 1 , figure 1 Is a schematic flowchart of an embodiment of a method for transmitting wireless baseband data according to the present invention;
[0079] The method for transmitting wireless baseband data provided in this embodiment includes:
[0080] Step S10: Receive the downlink baseband signal transmitted by the baseband processing unit BBU, process the downlink baseband signal, modulate it into a downlink intermediate frequency analog signal, and output it to the Ethernet cable;
[0081] In this embodiment, an EIP (Ethernet signal + IF signal +PoE) device is provided, which is placed between the baseband processing unit BBU and the remote radio module RRU, and the d...
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Disclosed is a method for transmitting wireless base band data, comprising: receiving a downlink base band signal transmitted by a base band processing unit (BBU), processing the downlink base band signal to module the downlink base band signal into a downlink intermediate frequency analog signal, and outputting the downlink intermediate frequency analog signal to an Ethernet cable; obtaining, from the Ethernet cable, an uplink intermediate frequency analog signal which is detected and fed back, and processing the uplink intermediate frequency analog signal; and taking the processed uplink intermediate frequency analog signal as a feedback input of digital pre-distortion (DPD), obtaining an intermediate frequency analog signal from the Ethernet cable, converting the intermediate frequency analog signal into an uplink base band signal, and sending the uplink base band signal to the BBU. Embodiments of the present invention also provide a corresponding apparatus and radio remote unit (RRU) for transmitting wireless base band data. By adopting the solutions disclosed in the embodiments of the present invention, transmission of a wireless base band signal between a BBU and an RRU can be implemented through an Ethernet signal + an intermediate frequency signal + power over Ethernet (EIP) device, thereby avoiding a high network deployment cost caused by the need of laying down an optical fiber or a microwave transmission network again.
Description
Technical field [0001] The present invention relates to the field of wireless communication technology, and 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 distributed base station BBU (Building Base band Unit, baseband processing unit) + RRU (Radio Remote Unit, radio remote module) networking mode has been quite common in applications, among which BBU The transmission data with the 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 the capacity of different carriers). In order to meet the high-rate transmission requirements of baseband IQ data, the industry currently uses optical fiber transmission or high-frequency and large-bandwidth microwave equipment transmission. However, these two transmission methods may not be available in actual network deploy...
Claims
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IPC IPC(8): H04L1/00
Inventor 詹建明
Owner NANJING ZHONGXING XIN SOFTWARE CO LTD