PC-FMCW Sensing Signal Configuration for Interference Mitigation
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Solution Overview
Problem
Existing wireless communication systems face challenges in effectively mitigating interference for phase code frequency modulated continuous wave (PC-FMCW) sensing operations, particularly in 5G networks with high-density deployments and advanced sensing technologies.
Innovation Solution
Implementing a sensing node and entity configuration to report and mitigate interference measurements by receiving and transmitting reference signal measurements and interference reports, utilizing PC-FMCW configurations for chirp slope and seed values to optimize sensing operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple sensing nodes are deployed in high-density 5G networks, then sensing coverage and positioning accuracy are improved, but interference from aggressor nodes increases
Solution Approach 1:
The patent implements a feedback mechanism where sensing nodes measure interference from aggressor nodes and report these measurements to the sensing entity. The sensing entity then uses this feedback information to configure appropriate PC-FMCW parameters (seed values, chirp slopes) that mitigate the identified interference, creating a closed-loop system that continuously optimizes sensing performance in high-density deployments
Solution Approach 2:
The patent changes key PC-FMCW parameters including seed values for phase codes and chirp slope values based on interference measurements. By dynamically adjusting these parameters, the system can differentiate between sensing signals and aggressor node signals, maintaining measurement precision even when multiple nodes are deployed in high-density configurations
2Productivity
If PC-FMCW sensing operations are performed in high-density 5G deployments, then network capacity and sensing coverage are enhanced, but interference mitigation becomes more difficult
Solution Approach 1:
The patent performs preliminary interference measurements and reports before configuring PC-FMCW sensing operations. By measuring interference characteristics in advance and reporting them to the sensing entity, the system can pre-configure appropriate mitigation parameters, reducing the complexity of real-time interference management in high-density deployments
Solution Approach 2:
The patent segments the interference mitigation process into distinct phases: interference measurement, interference reporting, and parameter configuration. This segmentation allows each function to be optimized independently, reducing overall system complexity while maintaining effective interference mitigation in high-capacity sensing scenarios
Data Source
AI summary
Disclosed are techniques for wireless sensing. In an aspect, a sensing node receives, from a sensing entity, a configuration to report interference measurements, obtains, at a first time, one or more sensing measurements of one or more first sensing reference signals transmitted by a transmitter sensing node, obtains, at the first time, one or more interference measurements of one or more second sensing reference signals transmitted by one or more aggressor sensing nodes, and transmits, to the sensing entity, an interference measurement report including at least the one or more interference measurements.