Data processing device, data processing device mehtod, BBU and RRU

A technology of a data processing device and a data processing module, applied in the direction of digital transmission system, electrical components, transmission system, etc., can solve problems such as increasing cost, difficulty in technical realization, hidden danger of product stability, etc., and achieve the effect of reducing data throughput

Inactive Publication Date: 2016-01-06
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

exist figure 2 As shown in the network connection topology diagram, one RRU requires a data bandwidth of 10Gbps, and cascading three RRUs requires a data bandwidth of 30Gbps. Such a large interface rate not only requires a large amount of optical fiber resources, which increases the cost, but also enables the technology to realize It becomes very difficult and brings great hidden dangers to product stability; similarly, if 100 RRUs are switched to the BBU through the switching network, then the switching network needs to have a data switching capacity of 1000Gbps, which obviously poses a challenge to the switching network. huge demands

Method used

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  • Data processing device, data processing device mehtod, BBU and RRU
  • Data processing device, data processing device mehtod, BBU and RRU
  • Data processing device, data processing device mehtod, BBU and RRU

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Embodiment 1

[0139] Figure 12 It is a schematic structural diagram of a data processing device used in the downlink direction according to Embodiment 1 of the present invention, as shown in Figure 12 As shown, the data processing device includes: a MAC entity located in the BBU, a coding submodule, a baseband modulation submodule and a resource mapping submodule, and an IFFT submodule located in the RRU. The resource mapping sub-module and the IFFT sub-module are connected through the interface between the BBU and the RRU. in,

[0140] The MAC entity is used to perform MAC layer processing on the data from the control and clock module in the BBU, and then send it to the encoding sub-module;

[0141] The encoding submodule is used to channel encode the data from the MAC entity, and then send it to the baseband modulation submodule through the interface;

[0142] The baseband modulation submodule is used to baseband modulate the data received through the interface, and then send it to t...

Embodiment 2

[0153] Figure 13 It is a schematic structural diagram of a data processing device used in the downlink direction according to Embodiment 2 of the present invention, as shown in Figure 13 As shown, the data processing device includes: an FFT submodule located in the RRU, and a resource reverse mapping submodule, a baseband demodulation submodule, a decoding submodule and a MAC entity located in the BBU. The FFT sub-module and the resource inverse mapping sub-module are connected through an interface between the RRU and the BBU. in,

[0154] The FFT sub-module performs decyclic prefix and Fourier transformation on the IQ data of the RRU digital intermediate frequency, and then sends it to the resource inverse mapping sub-module;

[0155] The resource inverse mapping sub-module extracts and separates the data on each time-frequency resource, and forms the corresponding antenna sequence data, which is sent to the baseband demodulation sub-module;

[0156] The baseband demodul...

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Abstract

Embodiments of the invention disclose a data processing device, a data processing device mehtod, a BBU and an RRU. The device comprises a first data processing module disposed in the building base band unit (BBU) and a second data processing module disposed in the radio remote unit (RRU); and the first data processing module and the second data processing module are connected through interfaces between the BBU and the RRU, and the interfaces bear IQ data of an effective sub carrier wave. The method comprises bearing the IQ data of the effective sub carrier wave through the interfaces between the BBU and the RRU.

Description

technical field [0001] The present invention relates to wireless communication technology, in particular to a data processing device and method, BBU, and RRU. Background technique [0002] In the existing wireless communication system, the base station (NodeB) of the access network is usually composed of an indoor baseband processing unit (BuildingBasebandUnit, BBU) and a radio remote unit (RadioRemoteUnit, RRU). data interaction, such as figure 1 shown. At present, the existing division of BBU and RRU is based on the baseband data entering the digital intermediate frequency. In this way, the I signal and Q signal before the digital intermediate frequency processing are transmitted on the interface between the BBU and the RRU. [0003] A Long Term Evolution (Long Term Evolution, LTE) system usually supports a bandwidth of 20 MHz, and in order to increase processing performance, multiple antennas are usually configured. According to the interface division between the exist...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L5/00
CPCH04L5/00
Inventor 陆海涛郭丹旦李继洲
Owner ZTE CORP
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