Gain control method and radio remote unit (RRU)

A gain control and automatic gain control technology, applied in the field of mobile communication, can solve the problem of signal-to-noise ratio reduction and achieve the effect of improving the signal-to-noise ratio

Inactive Publication Date: 2011-11-02
ZTE CORP
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[0008] The embodiment of the present invention provides a gain control method and a remote radio unit to solve t

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  • Gain control method and radio remote unit (RRU)
  • Gain control method and radio remote unit (RRU)
  • Gain control method and radio remote unit (RRU)

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Embodiment Construction

[0042] In order to make the purpose, technical solution and advantages of the present invention more clear, the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined arbitrarily with each other.

[0043] The embodiment of the present invention is aimed at the GSM system by adopting a method of dividing time slots and combining instantaneous power sampling and average power sampling to ensure the signal-to-noise ratio of the uplink signal. The method of combining instantaneous power sampling and average power sampling is also called fast A method combining control and slow control.

[0044] An embodiment of the present invention provides a gain control method, which is applied to the radio remote control of the global mobile communication system including an automatic g...

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Abstract

An embodiment of the invention provides a gain control method and a radio remote unit (RRU). The method is applied in an automatic gain control module, an ADC, a VGA and the RRU of a global mobile communication system of an ATT. The method comprises the following steps that: detecting instantaneous power of ADC signals in a first time period of a current time slot of a current frame by the automatic gain control module; determining whether attenuating gains of the VGA and/or the ATT according to a detected result; if attenuation is performed, configuring the gains after being attenuated to the module which needs to be attenuated; detecting mean power of ADC signals in a second time period of the current time slot of the current frame by the automatic gain control module; adjusting the gains of the VGA and/or the ATT according to the detected result and a preset power threshold; configuring the gains after being attenuated to the module which needs to be attenuated in the corresponding time slot of the next frame. By using the invention, a signal to noise ratio of an uplink signal can be effectively raised.

Description

technical field [0001] The invention relates to mobile communication technology, in particular to a gain control method and a remote radio unit. Background technique [0002] A Global System for Mobile Communications (GSM) base station is mainly composed of two parts: a base band unit (Base Band Unit, BBU) and a radio remote unit (Radio Remote Unit, RRU). When the base station is working in the uplink, the main job of the RRU is to receive the signal from the user equipment, and send the signal to the BBU for demodulation after processing. In normal operation, the signal power received by the RRU from the antenna port from the user is generally relatively small. In order to facilitate the signal processing of the subsequent link, the RRU will perform filtering, low-noise amplification, and RF mixing on the signal during the uplink processing. , After the analog-to-digital conversion, the digital signal will be processed. The signal-to-noise ratio in the link processing of ...

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Application Information

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IPC IPC(8): H04W52/52
CPCH03F3/00H03G3/3073H04W52/52
Inventor 黄国明杜菊陈军政
Owner ZTE CORP
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