A Method and System for Atmospheric Waveguide Interference Suppression
An atmospheric waveguide and interference suppression technology, which is applied in the field of communication, can solve the problems of inaccurate positioning of interference sources, large amount of calculation, and poor operability, so as to save manpower, realize accurate judgment and positioning calculation, and improve the difference in positioning accuracy. Effect
Active Publication Date: 2020-09-11
CHINA MOBILE GROUP SHANDONG +1
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[0007] The present invention provides an atmospheric waveguide interference suppression method and system that overcomes the above-mentioned problems or at least partially solves the above-mentioned problems, and solves the problems of large amount of calculation, inaccurate positioning of interference sources, many restrictive conditions, and poor operability in the prior art. question
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[0046] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.
[0047] Such as figure 2 with image 3 As shown in the figure, a method for suppressing atmospheric waveguide interference is shown in the figure, including:
[0048] S1. After determining that the interference suffered by the interfered cell is co-frequency interference, obtain the time delay of the co-frequency interference, and determine the co-frequency interference whose time delay exceeds the set time delay threshold as atmospheric waveguide interference;
[0049] S2. Synchronize with the interference signal of the atmospheric waveguide interference to obtain the physical cell identifier (Physical Cell Identifier, PCI) of the interference source cell that generates...
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The invention provides an atmospheric waveguide interference suppression method and system, and the method comprises the steps: S1, determining that the interference suffered by an interfered cell isthe same-frequency interference, obtaining the time delay of the same-frequency interference, and determining the same-frequency interference with the time delay exceeding a set time delay threshold value as the atmospheric waveguide interference; S2, synchronizing with an interference signal interfered by the atmospheric waveguide; The method comprises the steps of obtaining a physical cell identifier (PCI) of an interference source cell which generates atmospheric waveguide interference, periodically monitoring a system information block (SIB) message of the interference source cell, obtaining a global identifier (ECGI) information of the interference source cell, and determining the position of the interference source cell according to the ECGI information; And S3, dividing the interfered cell into different region ranges by taking the interfered core site as a concentric circle according to the position relationship between the interfered cell and the interference source cell, andrespectively carrying out interference suppression on each region range. Inhibition of the TD-LTE far-end same frequency interference on an interfered end is achieved.
Description
technical field [0001] The present invention relates to the technical field of communications, and more particularly, to an atmospheric waveguide interference suppression method and system. Background technique [0002] Under certain meteorological conditions, the electromagnetic waves propagating in the atmospheric boundary layer, especially the near-surface layer, are affected by the refraction of the atmosphere, and their propagation paths are bent to the ground. When the curvature exceeds the curvature of the earth's surface, the electromagnetic waves will be partially trapped in a certain thickness. In the thin layer of the atmosphere, just like the electromagnetic wave propagates in the metal waveguide, this phenomenon is called the atmospheric waveguide propagation of the electromagnetic wave. The atmospheric waveguide phenomenon can make the TD-LTE downlink wireless signal propagate very far. Since the propagation distance exceeds the protection distance of the TD-LT...
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IPC IPC(8): H04J11/00H04W16/10
Inventor 刘立洋刘毅李言兵刘亚公维伟
Owner CHINA MOBILE GROUP SHANDONG