Sensing Node Handover Using Reference Signal Measurements
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Solution Overview
Problem
In cellular networks, the quality of radio electromagnetic wave signals used for sensing applications decreases when sensing targets and nodes become mobile, leading to discontinuity of sensing services due to changes in distance and signal reception quality.
Innovation Solution
A node handover method is implemented by sensing receiving nodes to switch from a first sensing transmitting node to a second node when certain conditions are met, including measurement and configuration of sensing reference signals to ensure continuous signal quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the sensing receiving node remains connected to the first sensing transmitting node, then the connection is stable, but the signal quality decreases when distance increases
Solution Approach 1:
The patent implements dynamic handover mechanisms where the sensing receiving node transitions from a first sensing transmitting node to a second sensing transmitting node based on real-time signal quality assessment. This dynamic adjustment allows the system to adapt to changing distance and signal conditions, maintaining reliable sensing connections while avoiding signal quality degradation that would occur with static node assignment.
Solution Approach 2:
The patent employs feedback mechanisms where the sensing receiving node measures signal quality metrics (such as reference signal received power) from multiple sensing transmitting nodes and uses this feedback information to determine when to trigger handover. This feedback-driven approach ensures that handover decisions are based on actual signal conditions, resolving the contradiction between maintaining stable connections and avoiding signal quality degradation.
2Object-affected harmful factors
If handover is performed frequently to maintain signal quality, then signal quality is maintained, but service continuity is disrupted
Solution Approach 1:
The patent implements preliminary action by performing measurements on sensing reference signals from candidate sensing transmitting nodes before handover is actually needed. The sensing receiving node proactively assesses signal quality from potential target nodes and prepares handover information in advance. This allows handover to be executed smoothly when conditions warrant it, maintaining signal quality while minimizing disruption to sensing service continuity.
Solution Approach 2:
The patent changes key parameters such as handover thresholds and measurement configurations based on current sensing conditions. By dynamically adjusting these parameters, the system can optimize the balance between maintaining signal quality and ensuring service continuity, avoiding unnecessary handovers that would disrupt sensing operations while still responding appropriately to signal quality degradation.
Data Source
AI summary
A node handover method includes: performing a handover from a first sensing transmitting node to a second sensing transmitting node in a case where a handover condition is met.