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Uplink receiver of LTE base station system and data processing method thereof

A base station system and data processing technology, applied in multi-frequency code systems, wireless communications, electrical components, etc., can solve the problem of high data traffic, and achieve the effect of reducing transmission costs, saving equipment costs, and saving fiber resources

Inactive Publication Date: 2013-12-04
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In view of this, the main purpose of the present invention is to provide a kind of uplink receiver of LTE base station system and its data processing method, to solve the problem that the data traffic of LTE distributed base station system Ir uplink transmission is too high

Method used

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  • Uplink receiver of LTE base station system and data processing method thereof
  • Uplink receiver of LTE base station system and data processing method thereof
  • Uplink receiver of LTE base station system and data processing method thereof

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Embodiment 1

[0036] In this embodiment, the bandwidth of the LTE base station system is 20MHz, the number of subcarriers is 1200, and the interval between subcarriers is 15KHz.

[0037] The composition structure of the LTE base station system uplink receiver of this embodiment is as follows figure 2 As shown, BBU and RRU are included, and BBU and RRU are connected through Ir. Wherein, one receiver may include at least one BBU and at least one RRU, and one BBU may be connected to at least one RRU, that is, one BBU may be connected to one or more RRUs.

[0038] Specifically, such as image 3 As shown, the RRU in the uplink receiver in this embodiment may include an antenna, a radio frequency (Radio Frequency, RF) module, a DAC module, a digital intermediate frequency module, a CP removal module, an FFT module, a symbol-level processing module, and an equalization module, and the BBU may It includes a demodulation module, a bit-level processing module and a MAC module.

[0039] For the LT...

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Abstract

The invention discloses an uplink receiver of a long term evolution (LTE) base station system. The uplink receiver comprises a base band unit (BBU) and a remote radio unit (RRU); the BBU and the RRU are connected by an interface Ir (interface between the RRU and the BBU). The RRU includes a fast fourier transformation (FFT) module. The RRU is used for receiving data, carrying out FFT processing on the received data, and sending the processed data to the BBU by the Ir; and the BBU is used for receiving the data from the RRU by the Ir. Correspondingly, the invention also discloses a data processing method of the uplink receiver. The sampling rate and the data bit width are reduced. Therefore, the Ir uplink data transmission flow is effectively reduced, the cost of transmission from the RRU to the BBU is lowered, and the optical fiber resources laid at the Ir are saved; and thus an objective of saving of the equipment cost and the maintenance cost is achieved.

Description

technical field [0001] The present invention relates to the next-generation Long Term Evolution (LTE, Long Term Evolution) technology, in particular to an uplink receiver of an LTE base station system and a data processing method thereof. Background technique [0002] Currently, a distributed base station implemented by using a base band processing unit (BBU, Base Band Unit) and a radio remote unit (RRU, Remote Radio Unit) has been widely used in the LTE system. Among them, the BBU is mainly used to realize baseband processing functions such as encoding / decoding, multiplexing / demultiplexing, modulation / demodulation, spread spectrum / despreading, and communication with high-level systems, and the RRU is mainly used to realize modulation / demultiplexing of the wireless signal front end Demodulation, digital up / down conversion, A / D conversion and other functions. [0003] In the LTE system, Orthogonal Frequency Division Multiplexing (OFDM, Orthogonal Frequency Division Multiplex...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L27/26H04W88/08
Inventor 王雯芳廖群任震耿鹏秦洪峰许玲李远英
Owner ZTE CORP
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