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Method and apparatus for suppressing long-range co-channel interference

A technology of co-frequency interference and suppression device, applied in the field of communication, can solve the problems of reducing the communication quality of cell base stations, interfering with uplink signal reception of cell base stations, etc.

Inactive Publication Date: 2017-03-22
CHINA MOBILE GROUP JIANGSU +1
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Problems solved by technology

In the case of the "low-altitude atmospheric waveguide" effect, the high-power downlink signal sent by the base station far away from the base station of the cell can propagate beyond the line of sight and transmit to the base station of the cell, thereby interfering with the uplink signal reception of the base station of the cell , resulting in long-distance co-channel interference, which reduces the communication quality of the cell base station

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  • Method and apparatus for suppressing long-range co-channel interference
  • Method and apparatus for suppressing long-range co-channel interference
  • Method and apparatus for suppressing long-range co-channel interference

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Embodiment Construction

[0027] Features and exemplary embodiments of various aspects of the invention will be described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is only to provide a better understanding of the present invention by showing examples of the present invention. The present invention is by no means limited to any specific configurations and algorithms presented below, but covers any modification, substitution and improvement of elements, components and algorithms without departing from the spirit of the invention. In the drawings and the following description, well-known structures and techniques have not been shown in order to avoid unnecessarily obscuring the present invention.

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Abstract

The invention discloses a method and apparatus for suppressing long-range co-channel interference and relates to the technical field of communication. The method and apparatus solve a problem of low communication quality of a base station of a cell caused by long-distance co-channel interference. The method comprises the following steps: monitoring whether a first base station is subjected to long-distance co-channel interference; if yes, acquiring an interference symbolic number which is the number of symbols of the long-distance co-channel interference affecting the uplink signal of the first base station; and calculating interference protection distance based on the number of symbols of the guard interval time slot of the first base station, the interference symbolic number, and signal transmission speed; turning off the symbols, the same as the interference symbolic number, in the downlink signal of the second base station, wherein the second base station is a base station that communicates by using the same frequency band of the first base station within the interference protection distance of the first base station.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a method and device for suppressing long-distance co-channel interference. Background technique [0002] In the LTE (Long Term Evolution, Long Term Evolution) system, multiple cells in the same area may use the same spectrum resources for communication, and the signal of any one cell will be affected by other cells that use the same spectrum resources and are closer to the cell. The same frequency interference of the signal of the cell. [0003] In order to prevent a cell from co-channel interference from signals of other cells that use the same spectrum resource and are relatively close to the cell, the cells that use the same spectrum resource are often set far apart. However, due to the "low-altitude atmospheric waveguide" effect, there will be long-distance co-channel interference between cells that are far apart. "Low-altitude atmospheric waveguide" is the effect of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W28/04
Inventor 陆学兵李钦竹
Owner CHINA MOBILE GROUP JIANGSU
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