Interference detection method and device

Abstract

The invention discloses an interference detection method and device. The method comprises the steps that the signal sent by a far end can be received, and the interference power of each PRB containedin a frequency range distributed by the received signal can be detected, wherein the PRB at least includes the idle PRB; within each period, when the interference power of each PRB is detected, the following steps can be executed: the average value of PRB interference power contained in each assigned frequency range obtained through the distribution of the received signal, and the average value ofall idle PRB interference power in the frequency range obtained through the distribution of the received signal can be determined to respectively reach to each corresponding preset power gate, and the interference of the set type can be determined, and the appearance times of the interference of the set type can be calculated; when it is determined that the appearance times of the interference ofthe set type reaches to the preset gate, it can be determined that far-end interference occurs. The invention is advantageous in that detection complexity and implementation difficulty of detection can be reduced; false detection and detection leakage can be prevented; detection flexibility can be enhanced, and detection accuracy can be raised.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a method and device for interference detection. Background technique [0002] When the phenomenon of atmospheric waveguide propagation of electromagnetic waves occurs, in a Time Division Long Term Evolution (TD-LTE) system, there may be long-distance same-frequency interference between base stations that are far apart, that is, far-end interference. [0003] Among them, the so-called atmospheric waveguide propagation phenomenon of electromagnetic waves refers to that under certain meteorological conditions, when the electromagnetic waves in the near-surface layer are affected by atmospheric refraction, and the curvature of the propagation trajectory exceeds the curvature of the earth's surface, a part of the electromagnetic waves will be in a certain thickness. The phenomenon of propagation in thin layers of the atmosphere. [0004] Among them, the so-called far-e...

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Problems solved by technology

[0005] Since the distances between the distant base stations and the disturbed base station are different and the propagation delays are different, the interference signal of the disturbed base station will show a slope characteristic from strong to weak in the time domain. Therefore, the existing Under the technology, when it is determined that the slope of the slope characteristic of the disturbed base station’s interference signal in the time domain exceeds the set threshold, it is determined that there is far-end interference

[0006] However, when the threshold set above is too large, it will cause missed detection. When the threshold set above is too small, it is easy to misjudge other types of interference, such as interference from adjac

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