Method and device for detecting and monitoring multi-dimensional mobile wireless signal

By using a multi-dimensional signal detection method to analyze rank indication and interference power, link quality can be inferred. This solves the problem that existing technologies cannot identify MIMO latent faults and uplink interference, enabling rapid fault location and intelligent operation and maintenance, and improving indoor signal coverage quality.

CN122458060APending Publication Date: 2026-07-24GUANGDONG BROADRADIO COMM TECH
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Patent Information

Application Number
CN202610639280.3
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-05-11
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

Existing technologies cannot achieve multi-dimensional fault monitoring, cannot identify MIMO latent faults, cannot accurately locate uplink PRB-level interference, cannot infer uplink quality, and lack proactive testing capabilities, resulting in abnormal indoor signal coverage and frequent user complaints.

Method used

By analyzing downlink signals to obtain rank indications, calculating uplink frequency band received interference power, analyzing base station control information to infer link quality, and combining sliding window and frequency domain feature analysis, we can accurately identify MIMO latent faults, narrowband interference, and broadband interference, and conduct proactive service testing during low traffic periods.

Benefits of technology

It enables rapid identification of latent MIMO faults, accurate location of uplink interference sources, improved operation and maintenance efficiency, reduced user complaints, and supports intelligent operation and maintenance of indoor distribution systems.

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Abstract

The invention relates to the technical field of wireless communication, in particular to a method and a device for detecting and monitoring multi-dimensional mobile wireless signals. The method comprises the following steps: demodulating a downlink signal to obtain service cell information, and analyzing a downlink control channel to extract a rank indication; judging whether a current channel meets a multi-input multi-output transmission condition or not according to the statistical distribution of the rank indication, and identifying a hidden fault that the signal strength reaches the standard but double-flow transmission cannot be realized; collecting uplink frequency band signals, calculating receiving interference power on each physical resource block, and distinguishing narrowband interference and broadband interference according to frequency domain characteristics of the receiving interference power of the physical resource block level; analyzing downlink control information issued by the base station, extracting an uplink modulation coding strategy index and a power control command, and inferring uplink quality according to an association relationship between an accumulated value of the power control command and a current modulation coding strategy level; the method is suitable for scenes with weak operation and maintenance capability, such as an indoor distribution system, and realizes low-cost and multi-dimensional intelligent operation and maintenance.
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