Wireless Resource Classification for Sidelink Interference
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Solution Overview
Problem
Current wireless communication technologies face challenges in accurately determining which resources to use for sidelink transmission, leading to interference between device-to-device (D2D) communications and positioning signals, which affects localization accuracy and communication quality.
Innovation Solution
The method involves exchanging resource classification information between terminal devices to determine which resources to use for sidelink transmission, based on signal quality measurements, allowing for the coexistence of sidelink and positioning signals without dedicating excessive resources to localisation services.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If resources are dedicated to positioning signals, then localization accuracy is improved, but resource utilization for sidelink transmission decreases
Solution Approach 1:
The patent implements dynamic resource classification where resources are not statically dedicated but dynamically categorized based on real-time signal quality measurements. The network node continuously monitors positioning signal quality and updates resource classifications (first class, second class, third class) accordingly, allowing the system to adapt resource allocation between positioning and sidelink functions based on current conditions.
Solution Approach 2:
The patent changes the parameter of resource allocation from fixed dedication to flexible classification based on signal quality thresholds. By measuring positioning signal quality and comparing against thresholds, the system transforms resources between different functional states (positioning-dedicated, shared, sidelink-available), optimizing both localization accuracy and overall resource utilization through parameter-based state transitions.
2Productivity
If more resources are allocated to sidelink transmission, then communication efficiency is improved, but interference with positioning signals increases
Solution Approach 1:
The patent implements a feedback mechanism where the network node continuously monitors the quality of positioning signals and uses this information to control resource classification. The measured signal quality feeds back into the resource management system, which adjusts the classification of resources to prevent sidelink transmissions from occurring on resources where positioning signals are present, thereby avoiding interference while maintaining communication efficiency.
Solution Approach 2:
The patent applies preliminary anti-action by proactively classifying resources based on positioning signal quality before sidelink transmissions occur. By预先 (in advance) identifying resources that carry positioning signals and classifying them as unavailable for sidelink use, the system prevents interference from occurring in the first place, rather than attempting to mitigate it after the fact.
3Measurement precision
If resource classification is implemented based on signal quality measurements, then resource allocation accuracy is improved, but system complexity increases
Solution Approach 1:
The patent introduces a network node as an intermediary that centralizes the complex tasks of signal quality measurement, threshold comparison, and resource classification. Instead of requiring each terminal device to perform complex measurements and classifications, the network node acts as a mediator that receives measurements from terminals, processes them against predefined thresholds, and returns simplified classification results, thereby reducing overall system complexity while maintaining high allocation accuracy.
4Measurement precision
If continuous signal quality monitoring is performed, then resource classification accuracy is improved, but energy consumption increases
Solution Approach 1:
The patent implements periodic monitoring instead of continuous monitoring, where signal quality measurements are taken at regular intervals rather than continuously. The network node periodically measures positioning signal quality and updates resource classifications based on these periodic measurements, reducing energy consumption while maintaining sufficient classification accuracy through strategically timed measurements rather than constant monitoring.
Data Source
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AI summary
This specification describes a first terminal device comprising means for transmitting resource classification information for use by a second terminal device in determining which of a set of resources to use in performance of sidelink transmission, wherein the resource classification information indicates that a particular resource of the set of resources belongs to a particular resource class of a plurality of resource classes.