Event-Triggered L1 Measurement Reporting for Lower Signaling Overhead
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Solution Overview
Problem
Existing L1 measurement reporting in mobile communications leads to significant signaling overhead and limited data diversity due to frequent reporting and fixed format information transmission, particularly in lower layer triggered mobility procedures.
Innovation Solution
Implementing a timer-based event triggered L1 measurement reporting mechanism where the UE starts a report triggering timer upon a predetermined event and transmits the L1 measurement report when the timer expires, incorporating a report prohibiting timer to avoid multiple reports within a short time frame.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If L1 measurement reports are transmitted frequently to ensure timely reporting, then reporting timeliness is improved, but signaling overhead increases significantly
Solution Approach 1:
The patent implements periodic action by using event-triggered reporting where measurement reports are transmitted only when specific events occur (such as when measurement values cross thresholds or when configured events are detected), rather than transmitting reports continuously or at fixed intervals. This event-driven periodic transmission reduces signaling overhead while ensuring timely reporting when actual changes occur in the wireless environment.
2Device complexity
If L1 measurement reports use a fixed format for simple transmission, then transmission complexity is reduced, but data diversity is limited
Solution Approach 1:
The patent applies dynamics by making the L1 measurement report format adaptable rather than fixed. The report format dynamically adjusts based on the specific event type, measurement configuration, and current wireless conditions. Different event types can trigger different report formats with varying levels of detail and different measured parameters, allowing the system to optimize between reporting completeness and overhead based on actual needs.
Solution Approach 2:
The patent implements parameter changes by allowing the report format parameters (such as included measurement quantities, resolution, and granularity) to be modified based on event type and configuration. The network can configure different reporting parameters for different events, enabling the system to change the amount and type of data transmitted according to the specific measurement scenario, thus achieving both simplicity and data diversity.
3Measurement precision
If multiple L1 measurement reports are transmitted within a short time frame to capture rapid changes, then measurement accuracy is improved, but signaling overhead increases
Solution Approach 1:
The patent implements feedback mechanisms where the network receives L1 measurement reports and uses this information to provide feedback on whether additional reports are needed. The network can configure event thresholds and reporting conditions based on received reports, creating a feedback loop that adjusts reporting frequency based on actual wireless conditions. This ensures measurement accuracy is maintained while avoiding unnecessary redundant reports.
Solution Approach 2:
The patent applies preliminary action by pre-configuring event thresholds, reporting conditions, and trigger criteria before measurements begin. The network provides advance configuration of when and how reports should be transmitted, allowing the UE to autonomously determine when reporting is necessary without requiring continuous network coordination. This preliminary setup enables accurate tracking of rapid changes while minimizing overhead through pre-planned reporting strategies.
Data Source
AI summary
Various solutions for event triggered L1 measurement reporting with respect to user equipment (UE) in mobile communications are described. A UE may perform layer 1 (L1) measurement. Also, the UE may start a timer in an event that a predetermined event occurs. Further, the UE may transmit an L1 measurement report to a network node in an event that the timer expires. By utilizing such timer, the event triggered L1 measurement reporting can be performed timely so that the signaling overhead can be reduced.