Measurement Gap Configuration for NTN Signaling Reduction
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Solution Overview
Problem
In non-terrestrial network (NTN) systems, user equipment (UE) faces challenges in measuring neighboring cells due to varying transmission delays from different satellites, limiting the number of configurable measurement gap configurations and causing high signaling overhead.
Innovation Solution
The method involves determining available measurement gap configurations and their associations with specific to-be-measured parameters based on network-side device configurations, allowing for flexible adaptation to different satellite measurements with reduced signaling overhead.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple parallel measurement gap configurations are directly configured for UE, then the number of configurable measurement gap configurations increases, but signaling overhead increases significantly
Solution Approach 1:
The measurement gap configuration is segmented into a base configuration and multiple offset values. Instead of configuring complete parallel measurement gap configurations, the patent configures a base measurement gap configuration and multiple offset values that can be applied to generate multiple derived configurations. This segmentation reduces signaling overhead while maintaining the ability to support multiple measurement scenarios.
Solution Approach 2:
The patent changes the parameter representation from complete configuration sets to offset values relative to a base configuration. By configuring offset values instead of full measurement gap configurations, the signaling overhead is significantly reduced. The offset values can be applied to the base configuration to generate multiple measurement gap configurations adaptively.
2Adaptability or versatility
If multiple parallel measurement gap configurations are configured to measure multiple neighboring cells, then measurement capability improves, but system complexity increases
Solution Approach 1:
The patent performs preliminary action by configuring a base measurement gap configuration that serves as a template. This base configuration is prepared in advance and can be reused multiple times with different offset values to generate specific measurement gap configurations for different neighboring cells. This approach simplifies the system by having a pre-prepared base configuration rather than managing multiple independent configurations.
Solution Approach 2:
The base measurement gap configuration serves as a universal template that can be applied to multiple neighboring cells through different offset values. This multi-functional approach allows a single base configuration to support multiple measurement scenarios, reducing system complexity while maintaining measurement capability for multiple cells.
3Measurement precision
If measurement gap configurations are updated continuously to adapt to satellite movement, then measurement accuracy improves, but signaling overhead increases
Solution Approach 1:
Instead of continuous updates, the patent employs periodic action by configuring offset values that can be applied to the base measurement gap configuration. The network can update only the offset values periodically or as needed, rather than continuously updating complete measurement gap configurations. This reduces signaling overhead while maintaining measurement accuracy through timely updates.
Solution Approach 2:
The patent extracts only the essential update information (offset values) from the complete measurement gap configuration. When updates are needed due to satellite movement, only the offset values need to be signaled, not the entire configuration. This extraction approach maintains measurement precision while significantly reducing signaling overhead compared to updating complete configurations.
Data Source
AI summary
An information configuration method is performed by user equipment (UE), and includes: determining, based on a configuration of a network-side device, at least one of at least one available measurement gap configuration or an association between each available measurement gap configuration and one or more specific to-be-measured parameters for indication.