A method, device and baseband chip for automatic gain control of a miniature repeater

Abstract

The invention provides a miniature repeater automatic gain control method and device, and a baseband chip. The method comprises the following steps: computing a downlink initial gain G0_D and an uplink initial gain G0_U; computing receiving signal strength indication RSSI0_D under a downlink perfect state and the receiving signal strength indication RSSI0_U under an uplink perfect state; computingthe downlink actual gain G1_D according to the downlink initial gain G0_D and the receiving signal strength indication RSSI0_D under the downlink perfect state, and computing the uplink actual gain G1_U according to the uplink initial gain G0_D and the receiving signal strength indication RSSI0_U under the uplink perfect state. The real-time detection of the uplink-downlink input power is realized by using the baseband chip, the gain required by an amplification link is computed before the link is opened, the gain stabilization of the whole link is guaranteed, and the gain can be adjusted inreal time.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a method, a device and a baseband chip for automatic gain control of a miniature repeater. Background technique [0002] Due to the complexity of the building structure and the signal loss caused by the wall, although the outdoor macro station can penetrate the wall, it is difficult to guarantee the deep coverage performance indoors. Due to its simple structure, low cost, and easy installation, micro-repeaters are widely used in many blind areas and weak fields that are difficult to cover. The micro-repeater introduces the signal from the donor antenna to amplify the specific area through the retransmission antenna. In actual use, on the one hand, the amplification gain of the signal by the micro-repeater must meet the coverage distance requirements during network planning, and on the other hand It is necessary to control the output power so that the power amplifi...

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Problems solved by technology

[0004] In the process of realizing the present invention, the inventor found that there are at least the following technical problems in the prior art: at the beginning of the design of the amplification link, after determining the analog device, it is equivalent to fixing the rated gain of the micro-repeater, which cannot be flexibly configured gain

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