Self-excited processing method and device of a wireless repeater

Abstract

In view of the problem that the self-excitation elimination capability of a wireless repeater via a self-excitation offset method is limited, the invention discloses a wireless repeater self-excitation processing method and apparatus. The method comprises the following steps: if the wireless repeater is in a self-excitation state, or, if the wireless repeater is not in the self-excitation state and a current isolation degree of the wireless repeater is less than or equal to a first isolation degree threshold, determining a first difference value obtained by subtracting a current gain of the wireless repeater from a nominal gain of the wireless repeater; if the first difference value is less than a first gain threshold, reducing the current gain of the wireless repeater, and updating the first difference value; and determining a current size relationship between the first difference value and the first gain threshold, and selecting whether to report a self-excitation gain reduction alarm state and a self-excitation shutdown alarm state. In the wireless repeater self-excitation processing method disclosed by the embodiment of the invention, the method is not limited by the self-excitation elimination capability of the wireless repeater, the problem that a relatively small isolation degree of the self-excitation can be detected in advance, and the self-excitation is eliminated intime.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to a self-excited processing method and device for a wireless repeater. Background technique [0002] The wireless repeater can solve the problem of base station coverage and is indispensable in the mobile communication network. When the gain of the wireless repeater is large or the isolation is small, there will be a self-excitation problem. The self-excitation will cause large-scale call drop and inaccessibility, and the power amplifier will burn out. [0003] In the prior art, in order to solve the problem of self-excitation, the wireless repeater uses the function of the Interference Cancellation System (ICS, Interference Cancellation System) to construct an image signal that is the same as the interference input by the leakage channel, and subtracts the image signal from the input signal to achieve self-excitation. The purpose of stimulating cancellation. However, in thi...

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present application provides a wireless repeater self-excitation processing method and device, which solves the problem in the prior art that the wireless repeater has limited ability to eliminate self-excitation through self-excitation cancellation

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