Sidelink Relay UE Reselection Using Candidate Relay Information
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Solution Overview
Problem
In the New Radio (NR) system, there is currently no specific solution for relay selection and reselection based on a sidelink, preventing UEs from accurately performing relay UE selection and reselection.
Innovation Solution
A method and device for relay UE determination that involves obtaining relay-related information from candidate UEs and using this information for relay UE selection or reselection, including the exchange of sidelink RRC messages to facilitate accurate relay UE choice.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If relay selection is performed based on link between UE and base station and signal quality on sidelink, then relay UE can be selected, but there is no specific solution for relay selection and reselection based on sidelink in NR system
Solution Approach 1:
The patent applies preliminary action by having the network device pre-configure relay selection parameters and criteria before the UE needs to perform relay selection. The network device provides measurement configurations and selection thresholds in advance, enabling the UE to accurately evaluate candidate relay UEs when selection is needed, rather than lacking any selection mechanism.
2Ease of operation
If relay UE selection is performed according to link quality and signal reception strength, then relay connection can be established, but the UE cannot accurately perform relay UE selection and reselection in NR system
Solution Approach 1:
The patent implements feedback by having the UE continuously measure signal quality metrics (such as RSRP, SINR) on the sidelink and report these measurements to the network device. The network device then provides feedback in the form of selection recommendations or direct commands indicating which relay UE to select, ensuring accurate selection based on real-time channel conditions.
Solution Approach 2:
The patent applies parameter changes by dynamically adjusting relay selection criteria based on measured signal quality parameters. The UE monitors multiple parameters including reference signal received power, signal-to-interference-plus-noise ratio, and link quality metrics, and uses these varying parameters to determine the optimal relay UE selection, thereby achieving accurate selection adapt to changing channel conditions.
Data Source
AI summary
A relay User Equipment (UE) determining method and a device are provided. The relay UE determining method includes: obtaining relay-related information corresponding to each candidate UE in at least one candidate UE; and performing relay UE selection or relay UE reselection according to the relay-related information corresponding to each candidate UE.