Interference Detection in Wireless Networks
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Solution Overview
Problem
Wireless communication networks face interference issues due to transmissions from neighboring base stations and user equipment, degrading performance, especially in scenarios where a user equipment is connected to a distant base station while in proximity to a closer but inaccessible one, leading to dominant interference scenarios.
Innovation Solution
Implementing a method to monitor for potentially dominant interferer user equipment, determine its proximity, and take appropriate actions to mitigate interference, including proximity detection techniques such as power spectrum density analysis, PRACH detection, and Chu sequence detection, to reduce interference by adjusting downlink transmissions and resource allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a UE is connected to a distant base station while in proximity to a closer but inaccessible base station, then the UE can maintain connectivity, but dominant interference occurs from the closer inaccessible base station
Solution Approach 1:
The system performs preliminary detection of potentially dominant interferers by monitoring transmissions from neighboring base stations and analyzing power spectrum density, PRACH signals, and Chu sequences before interference significantly degrades communication. This advance detection allows the network to take preemptive actions such as adjusting downlink transmissions and resource allocation to mitigate the harmful interference while maintaining connectivity.
2Reliability
If interference mitigation actions are taken, then communication quality improves, but system complexity increases due to monitoring and detection requirements
Solution Approach 1:
The base station performs multiple functions using a unified approach: it monitors for interferers, detects their presence through multiple signal types (power spectrum density analysis, PRACH detection, Chu sequence detection), and executes mitigation actions. This multi-functional design consolidates what could be separate complex systems into a coordinated process, managing the complexity while improving communication quality through comprehensive interference awareness and response.
Data Source
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AI summary
Certain aspects of the present disclosure provide methods, apparatus, and computer-program products for the detection of potentially interfering user equipment (UE) in the proximity of a detecting entity. The detecting entity may be a base station or a UE. The detecting entity may take one or more actions in response to the detection in an effort to mitigate interference.