Uplink Resource Mapping for Low-Latency Interference Detection
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Solution Overview
Problem
Existing wireless communication networks, particularly 5G NR networks, face challenges in accurately detecting interference signals with minimal latency and preventing significant throughput degradation due to intentional or unintentional jamming, which can cause financial losses and harm to network reliability.
Innovation Solution
An apparatus and method utilizing scheduler information-based data acquisition and interference detection, where scheduling information is used to isolate non-allocated time-frequency resources for interference detection, enabling accurate interference detection without disrupting normal network operations, and allowing always-on interference measurements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional interference detection methods are used, then interference can be detected, but system throughput is significantly degraded and normal network operations are disrupted
Solution Approach 1:
The patent extracts interference detection from the main data transmission path by utilizing scheduled silence periods where no normal data transmission occurs. During these periods, the receiver is configured to measure interference without processing normal communication data, thereby separating the detection function from the transmission function and avoiding throughput degradation.
Solution Approach 2:
The system performs interference detection in advance during scheduled silence periods before normal data transmission resumes. The receiver is pre-configured with silence period information from the scheduler and performs measurements during these predetermined intervals, allowing interference data to be collected proactively without waiting for transmission interruptions.
2Measurement precision
If continuous interference monitoring is performed on all time-frequency resources, then comprehensive interference detection is achieved, but computational overhead and processing complexity increase significantly
Solution Approach 1:
The patent segments the time-frequency resources into two distinct categories: allocated resources for normal data transmission and non-allocated silence period resources for interference measurement. This segmentation allows the receiver to focus computational efforts only on measuring interference during specific non-allocated periods rather than continuously processing all resources, thereby reducing overall computational overhead while maintaining detection coverage.
3Loss of time
If interference detection is performed during normal data transmission, then real-time detection is achieved, but detection accuracy is reduced due to signal mixing
Solution Approach 1:
The system implements periodic interference measurement during scheduled silence periods that occur at regular intervals in the transmission schedule. The receiver alternates between normal data reception and dedicated interference measurement periods, creating a periodic measurement cycle that provides timely interference data without the signal mixing problems of continuous monitoring, as each measurement occurs during a distinct, isolated silence period.
Data Source
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AI summary
According to an aspect, there is provided an apparatus for a radio receiver or transceiver of a first access node. The apparatus is configured to perform the following. Upon receiving data via at least one antenna, the apparatus performs resource mapping on the received data based on scheduling information defining currently allocated uplink time-frequency resources to isolate at least a first data set corresponding to non-allocated uplink time-frequency resources. The apparatus compares the first data set against one or more first pre-defined criteria for detecting interference. In response to detecting interference in the first data set according to said one or more first pre-defined criteria, the apparatus instructs a scheduler entity of the first access node to avoid scheduling uplink time-frequency resources affected by said interference.