Sidelink Relay Measurement Reporting for Efficient UE Activation
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Solution Overview
Problem
Existing wireless communication systems face inefficiencies in determining which relay UEs to activate or deactivate for relaying communications, leading to wasted power, processing, and network resources due to insufficient measurements.
Innovation Solution
A first UE performs and reports suitable measurements on reference signals from both activated and deactivated relay UEs, triggering reports based on specific events and criteria, enabling a second UE or network entity to efficiently manage relay UE activation and deactivation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If measurements are performed on deactivated relay UEs, then relay selection accuracy is improved, but power consumption and processing resources increase
Solution Approach 1:
The system performs measurements on deactivated relay UEs in advance before they are needed for relay selection. By pre-measuring the signal quality of potential relay candidates, the system avoids the need for intensive real-time measurements when relay selection is actually required, thus reducing power consumption during critical operations while maintaining measurement accuracy.
Solution Approach 2:
Measurements on deactivated relay UEs are performed periodically rather than continuously. The system schedules measurement occasions at specific intervals, allowing the UE to enter low-power states between measurements. This periodic approach maintains up-to-date measurement data for relay selection while significantly reducing overall power consumption compared to continuous monitoring.
2Measurement precision
If measurements are performed on deactivated relay UEs, then relay selection accuracy is improved, but processing resources are consumed
Solution Approach 1:
By performing measurements on deactivated relay UEs in advance, the system prepares measurement data before relay selection is needed. This preliminary action allows processing resources to be used during low-activity periods, avoiding resource contention during critical relay selection events and reducing the apparent processing burden during high-priority operations.
Solution Approach 2:
The system performs measurements on a selected subset of deactivated relay UEs rather than all possible candidates. By focusing measurements on the most promising relay candidates based on initial screening criteria, the system achieves sufficient selection accuracy without the excessive processing resources that would be required to measure all potential relays comprehensively.
3Productivity
If event-triggered reporting is implemented, then network resource efficiency is improved, but measurement reporting complexity increases
Solution Approach 1:
The system implements event-triggered reporting where measurement reports are sent to the network only when specific events occur, such as when measurement results cross predefined thresholds or when relay selection criteria are met. This feedback mechanism ensures that the network receives relevant information only when necessary, optimizing network resource usage while the structured event criteria keep reporting complexity manageable through clear, rule-based triggers.
Data Source
AI summary
Methods, systems, and devices for wireless communications are described. For example, the described techniques provide for performing and reporting suitable measurements, at a first user equipment (UE), on reference signals from relay UEs to determine which relay UEs to activate or deactivate for relaying communications for the first UE. The first UE may be configured to perform measurements on deactivated relay UEs, and the first UE may report these measurements (or other measurements) when one or more events are triggered. The events may depend on the measurements performed on the deactivated relay UEs. Once the events are triggered, the first UE may report the measurements, and a second UE or a network entity may use the measurements to efficiently determine which relay UEs to activate or deactivate for relaying communications for the first UE.