D2D Signal Detection Resource Determination
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Solution Overview
Problem
In D2D communication, user equipment faces challenges in determining the number of discovery resources, leading to potential performance loss and increased detection complexity due to hardware constraints and mismatching resource configurations.
Innovation Solution
A method and device for detecting D2D signals, where user equipment determines the number of discovery resources based on a correspondence relationship between physical resource regions, allowing for targeted detection of discovery signals without blind scanning across all possible resources, thereby improving detection efficiency and reducing complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If user equipment blindly detects for all possible numbers of discovery resources, then the detection accuracy may be improved, but the detection complexity increases significantly
Solution Approach 1:
The patent applies preliminary action by having the network device pre-configure and indicate the number of discovery resources to the user equipment before detection occurs. This allows the UE to perform targeted detection on the specific number of resources indicated by the network, rather than blindly searching through all possible resource configurations, thereby maintaining detection accuracy while significantly reducing detection complexity
2Device complexity
If user equipment determines the number of discovery resources based on network indication, then the detection complexity is reduced, but the adaptability to different resource configurations may be limited
Solution Approach 1:
The patent applies dynamics by making the number of discovery resources configurable and adjustable through network indication. The system can dynamically adapt to different resource configurations as the network conditions and requirements change, allowing the UE to flexibly detect discovery signals on the appropriate number of resources based on network guidance rather than being fixed to a static configuration
3Reliability
If the number of discovery resources is increased to improve signal detection reliability, then the detection performance is enhanced, but the resource consumption and detection time increase
Solution Approach 1:
The patent applies preliminary action by having the network device pre-indicate the optimal number of discovery resources to be used for detection. This allows the user equipment to directly detect on the correct number of resources without unnecessary blind searching, thereby maintaining high detection reliability while significantly reducing the detection time and resource consumption that would otherwise be required
Data Source
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AI summary
Disclosed are a D2D signal detecting method and device, comprising: a user equipment determines a physical resource for discovery signal detection; the user equipment determines the number of discovery resources used by the discovery signals according to the physical resource area for discovery signal detection, or according to a discovery resource set of the discovery sequence contained in the discovery signal detected in the physical resource area, the number of discovery resources being the number of discovery resources used in one discovery period or in the physical resource area for sending the same discovery signal; the user equipment detects the discovery signals according to the determined number of discovery resources. The present invention can improve performance loss caused by D2D signal detection and can reduce the complexity of D2D signal detection by user equipment.