D2D Discovery Reliability via Multi-Instance Detection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional D2D device discovery methods in cellular communication networks are unreliable for mobile devices, leading to high false detection rates and failed connections due to the variability in discovery message characteristics caused by changes in location and orientation.
Innovation Solution
A method that involves obtaining multiple discovery message detection results and determining the D2D discovery status based on these results, along with signal strength measurements, at higher layers of the protocol stack, to increase reliability and reduce false detections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single discovery message detection result is used to determine D2D discovery status, then the device complexity is reduced, but the reliability of device detection deteriorates due to high false detection rates
Solution Approach 1:
The patent segments the discovery message detection process into multiple independent detection instances. Instead of relying on a single detection result, the system performs multiple detections and aggregates the results. This segmentation allows the system to distinguish between transient detection failures and actual device absence, thereby improving reliability without significantly increasing overall system complexity.
Solution Approach 2:
The patent implements a feedback mechanism where multiple discovery message detection results are collected and fed back into a decision-making process. The system aggregates detection results from multiple instances and uses this feedback to make a more reliable determination of D2D discovery status. This feedback loop enables the system to overcome individual detection errors and achieve more accurate device detection.
2Reliability
If multiple discovery message detection results are used to determine D2D discovery status, then the reliability of device detection is improved, but the device complexity increases
Solution Approach 1:
The patent applies partial action by performing a limited number of discovery message detections rather than continuous monitoring. The system determines an appropriate number of detection instances based on device mobility characteristics and detection requirements. This approach achieves sufficient reliability improvement without implementing excessive detection that would unnecessarily complicate the system.
Solution Approach 2:
The patent changes the parameter of detection quantity from a single instance to multiple instances. By adjusting the number of detection instances based on device mobility and detection requirements, the system optimizes the balance between reliability improvement and complexity increase. This parameter change allows flexible adaptation to different operational scenarios.
3Adaptability or versatility
If discovery messages are transmitted by mobile wireless communication devices, then the adaptability to mobile scenarios is improved, but the measurement precision of discovery messages deteriorates due to large variance in message characteristics
Solution Approach 1:
The patent performs preliminary actions by conducting multiple discovery message detections before making a final discovery status determination. This preliminary multi-instance detection allows the system to account for variations in message characteristics caused by device mobility. By gathering multiple measurements in advance, the system can filter out anomalies and achieve more precise detection results.
Solution Approach 2:
The patent implements periodic detection actions where discovery messages are detected at multiple time instances. This periodic approach allows the system to capture the temporal variations in discovery message characteristics caused by mobile device movement. By sampling at multiple periods, the system can identify consistent patterns and distinguish them from transient variations, thereby improving measurement precision.
Data Source
AI summary
A method of operating a first wireless communication device to perform D2D discovery includes obtaining multiple discovery message detection results, and determining a D2D discovery status of a second wireless communication device based on the multiple discovery message detection results. Using multiple discovery message detection results to determine the D2D discovery status of the second wireless communication device significantly increases the reliability of D2D discovery, thereby increasing the likelihood that a device available for D2D communication will be detected, while reducing the likelihood of false detections.