Relay UE Selection Using State-Dependent U2N and U2U Thresholds
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently and accurately performing wireless signal transmission and reception procedures, particularly in V2X communication scenarios, due to the need for improved mobile broadband communication, reliability, and low latency, especially in selecting appropriate relay types for U2N and U2U communication.
Innovation Solution
A method is introduced to measure signal quality, determine relay types (U2N and U2U) based on threshold parameters, and perform discovery procedures to select a suitable relay UE, with separate configuration of threshold parameters for different RRC states and relay types, considering priority information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If relay type selection is performed without separate threshold parameters for different relay types, then the device complexity is reduced, but the reliability of relay selection is insufficient
Solution Approach 1:
The patent segments the threshold parameter configuration by dividing it into separate threshold parameters for U2N relay type and U2U relay type. This segmentation allows each relay type to have optimized threshold values tailored to its specific requirements, improving selection reliability without requiring a single complex unified threshold system.
Solution Approach 2:
The patent applies local quality by configuring threshold parameters specifically for each relay type and RRC state combination. Instead of using a uniform threshold across all scenarios, the system assigns localized threshold values that are optimized for specific conditions (e.g., different thresholds for U2N vs U2U, for connected vs idle states), thereby improving reliability where needed without increasing overall system complexity.
2Adaptability or versatility
If a single threshold parameter is used for both U2N and U2U relay types, then the ease of operation is improved, but the adaptability to different relay types is reduced
Solution Approach 1:
The patent implements dynamic adaptability by making the threshold parameter configuration flexible and state-dependent. The system dynamically selects appropriate threshold parameters based on the current RRC state and desired relay type, allowing the configuration to adapt to changing conditions without requiring manual reconfiguration or complex static structures.
Solution Approach 2:
The patent changes parameters by introducing separate threshold parameters for different relay types and RRC states. This parameter differentiation allows the system to adapt to specific relay type requirements (U2N vs U2U) and operational states (connected vs idle), improving versatility while maintaining manageable complexity through structured parameter organization.
3Reliability
If relay selection is performed without considering RRC states, then the ease of operation is improved, but the reliability of communication is reduced
Solution Approach 1:
The patent applies preliminary action by pre-configuring separate threshold parameters for each RRC state (connected and idle) before relay selection is needed. This preliminary state-dependent configuration ensures that when relay selection occurs, the appropriate thresholds are already in place, improving reliability without requiring complex real-time adjustments or state evaluation logic during the selection process.
Data Source
AI summary
According to an embodiment of the present disclosure, a first UE may measure a signal quality related to a network, determine at least one relay type among the U2N relay type and the U2U relay type based on the signal quality and threshold parameters, and perform a discovery procedure for selecting a relay UE based on the at least one relay type. The threshold parameters are configured separately for each of the U2N relay type and the U2U relay type.