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Method and apparatus for identifying sources of interference propagating through atmospheric ducts

An atmospheric waveguide and interference source technology, applied in wireless communications, electrical components, etc., can solve problems such as indistinguishability, and achieve the effect of reducing atmospheric waveguide interference

Active Publication Date: 2021-04-20
TELEFON AB LM ERICSSON (PUBL)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, since there may be 100 or even more eNBs in one direction within a distance of 200km from the interfered eNB, it is difficult for AoA-based detection to tell which of these eNBs is the interfering eNB

Method used

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  • Method and apparatus for identifying sources of interference propagating through atmospheric ducts
  • Method and apparatus for identifying sources of interference propagating through atmospheric ducts
  • Method and apparatus for identifying sources of interference propagating through atmospheric ducts

Examples

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Embodiment Construction

[0050] Embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. It should be noted that the following examples are illustrative only and do not limit the scope of the present disclosure.

[0051] first plan

[0052] image 3 is a flowchart illustrating a method 300 for identifying sources of interference propagating via atmospheric ducts according to a first aspect of the present disclosure. The method 300 can be applied in network equipment such as operation, administration and maintenance (OAM) equipment. Method 300 includes the following steps.

[0053] In step S310, a set of interferer candidates is determined. Here, the interference source candidate may be an eNB (eg, TD-LTE system) in a TDD system (eg, TD-LTE system) figure 1 in eNB 1 or eNB 2). Due to the channel reciprocity principle in TDD system, for example, when the UL subframe received at eNB 1 is interfered by the DL subframe transmitted from eNB...

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Abstract

The present disclosure provides a method (300) in a network device for identifying a source of interference propagating through an atmospheric duct. The method includes: determining (S310) a set of interferer candidates; allocating (S320) a random access resource to each interferer candidate in the set; receiving (S330) from each interferer candidate in the set taking measurements obtained by receiving random access from other interferer candidates in the set; and identifying (S340) based on the measurements whether any interferer candidate in the set is a source of interference propagating through the atmospheric duct.

Description

technical field [0001] The present disclosure relates to radio communication technology, and more particularly, to methods and apparatus for identifying sources of interference propagating through atmospheric ducts. Background technique [0002] In radiocommunications, an atmospheric duct is a horizontal layer in the lower atmosphere in which a vertical refractive index gradient causes radio signals (and light rays) to be guided or transmitted in a waveguide, tending to follow the curvature of the Earth, and in the waveguide Less attenuation is experienced than in the absence of the waveguide. In general, the presence of atmospheric ducts is not predictable at all, and usually occurs rarely (e.g. a few days / hours per month) and in some specific areas (e.g. in a desert or close to the coast). [0003] For radio communication systems, radio signals can pass through atmospheric waveguides with high propagation delay but low attenuation. Such high-delay but low-attenuation sig...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W24/00H04W64/00
CPCH04W24/10
Inventor 朱怀松李鹏
Owner TELEFON AB LM ERICSSON (PUBL)
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