Frequency domain transmission method and device

A transmission method and frequency domain technology, applied in the field of communication, can solve problems such as large complexity, and achieve the effects of improving transmission performance, reducing signal transmission bandwidth, and reducing transmission bandwidth requirements.

Inactive Publication Date: 2012-07-04
HUAWEI TECH CO LTD
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  • Abstract
  • Description
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Problems solved by technology

[0005] Due to the extremely high rate of the baseband signal, the compression scheme in the prior art is too complex and will cause a large performance loss

Method used

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  • Frequency domain transmission method and device
  • Frequency domain transmission method and device

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Embodiment Construction

[0046]The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0047] Embodiments of the present invention provide a frequency domain transmission method, device, and system, which can be applied to Orthogonal Frequency Division Multiple Access (OFDMA) or similar technologies such as Single Carrier Frequency Division Multiple Access (Single Carrier Frequency Division Multiple Access) In a Carrier Frequency Division Multiple Access (SC-FDMA) system, such as an LTE system, an enhanced long-term evolution (LTE-Advanced, LTE-A)...

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Abstract

The embodiment of the invention discloses a centralized base-band processing unit (CBPU), which comprises a switching module, at least one base-band unit (BBU) and a resource mapping module, wherein the resource mapping module is used for performing resource block de-mapping on an uplink frequency domain base-band signal obtained by fast Fourier transform (FFT), and separating a signal of each user from a corresponding sub-carrier; the switching module is used for transmitting the signal of each user to a corresponding BBU; and the BBU is used for processing the received signal of the user. Correspondingly, the embodiment of the invention also discloses a remote radio frequency unit (RRU) and a frequency domain transmission method. By the technical scheme, the transmission performance of a cloud radio access network (C-RAN) system can be improved.

Description

technical field [0001] The present invention relates to the communication field, in particular to a frequency domain transmission method and device. Background technique [0002] Compared with the traditional macro base station, the distributed base station is divided into two parts: the base band processing unit BBU (Base Band Unit) and the remote radio frequency unit RRU (Remote RF Unit), where the RRU is placed at the access point far from the BBU They are connected by optical fiber and transmit baseband wireless signals in analog or digital mode. The distance between BBU and RRU is generally about tens of meters to one or two hundred meters. The advantage of this is that the network construction of the system is more flexible and convenient, the antenna erection is not affected by the location of the equipment room, and it is also convenient for the large-capacity design of the base station system, which is conducive to reducing the system cost. Distributed Antenna Syst...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L27/26H04W88/08
CPCH04W88/085H04L27/2626H04W28/16H04W72/1268H04L27/2647H04B7/0413H04L5/003
Inventor 刘晟
Owner HUAWEI TECH CO LTD
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