Conditional F1AP NGAP Event Reporting for Timing Resilience
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Solution Overview
Problem
In next-generation radio access network architecture, there is no effective method to ensure that a central unit of a gNB is aware of the timing synchronization status at a distributed unit to determine if the service is acceptable or unacceptable for user equipment, leading to unnecessary large volumes of reports and failure to capture user equipment's clock quality acceptance criteria.
Innovation Solution
Implementing conditional event reporting by determining a radio access network timing synchronization status reporting range associated with attributes and transmitting this range to a second network node, allowing for targeted reporting based on pre-configured thresholds and user equipment-specific acceptance criteria, thereby reducing unnecessary reports and ensuring timely updates to the central unit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If event-triggered reporting is configured upon significant events, then timing synchronization status can be monitored and reported, but the volume of reports increases unnecessarily when status remains within acceptable ranges
Solution Approach 1:
The patent introduces a reporting range parameter that modifies the threshold behavior. Instead of reporting only when status exceeds a fixed threshold, the system reports when the status changes by an amount greater than a configured reporting range. This parameter change allows the system to filter out unnecessary reports while maintaining reliable monitoring of significant timing synchronization status changes.
2Loss of information
If continuous periodic reporting is configured, then timing synchronization status is always updated, but network resources are consumed unnecessarily when status is stable
Solution Approach 1:
The patent implements dynamic reporting behavior where the system adapts its reporting frequency based on the current status conditions. The reporting mechanism transitions from static continuous periodic reporting to dynamic conditional reporting that activates only when the timing synchronization status changes by an amount exceeding the reporting range. This dynamic approach ensures information is updated when needed while conserving network resources during stable periods.
3Ease of manufacture
If traditional threshold-based reporting is used, then simple implementation is maintained, but user equipment-specific acceptance criteria cannot be captured
Solution Approach 1:
The patent segments the reporting threshold into two components: a base threshold for detecting status changes and a reporting range parameter that can be configured differently for different user equipment. This segmentation allows the system to maintain the simplicity of threshold-based reporting while adding flexibility to accommodate user equipment-specific acceptance criteria through the reporting range configuration.
Data Source
AI summary
A network node, a core network node and a user equipment are disclosed. The network and the core network node each includes a processor; and a memory storing respective instructions. When executed by the processor, the network node is configured to: determine at least one radio access network timing synchronization status reporting range associated with at least one radio access network timing synchronization status attribute; and transmit, to a second network node, the radio access network timing synchronization status reporting range. The core network node is configured to: determine at least one radio access network timing synchronization status reporting range associated with at least one radio access network timing synchronization status attribute. In addition, the user equipment includes a processor; and a memory storing instructions that, when executed by the processor, cause the user equipment to: determine a clock quality acceptance criteria; and transmit the clock quality acceptance criteria.