Wireless Device Radio Access Technology Availability Indicator
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Solution Overview
Problem
Existing wireless communication systems face challenges in accurately determining and indicating available radio access technologies (RATs) to users, particularly due to varying network conditions and features across different RATs, which can impact user behavior and device performance.
Innovation Solution
A wireless device determines radio access technology availability by considering factors such as the serving cell's support for non-standalone configurations, likelihood of handover, and presence of standalone neighbor cells with sufficient signal strength, allowing it to accurately present the available RATs to the user through a user interface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the wireless device determines RAT availability based solely on serving cell system information indicating support for non-standalone configuration, then the determination process is simple, but the accuracy of RAT availability indication deteriorates due to handover likelihood and signal strength variations
Solution Approach 1:
The wireless device performs preliminary assessments of handover likelihood and signal strength conditions before finalizing the RAT availability determination. By evaluating serving cell signal strength against thresholds and assessing handover probabilities in advance, the device avoids inaccurate indications that would result from relying solely on system information, thereby improving measurement precision without excessive complexity increase
Solution Approach 2:
The determination process incorporates feedback mechanisms where the device continuously monitors serving cell signal strength and handover conditions, adjusting the RAT availability indication based on current network state. This feedback loop ensures that the indication reflects actual accessible RATs rather than just configured possibilities, improving accuracy while maintaining manageable complexity through standardized feedback procedures
2Measurement precision
If the wireless device considers multiple factors including handover likelihood and standalone neighbor cell signal strength, then the accuracy of RAT availability indication improves, but the determination process complexity increases
Solution Approach 1:
The determination process is segmented into distinct evaluation stages: first assessing serving cell support for non-standalone configuration from system information, then evaluating handover likelihood based on signal strength thresholds, and finally checking standalone neighbor cell availability. This segmentation allows the device to systematically consider multiple factors improving accuracy while organizing complexity into manageable, sequential steps rather than a monolithic complex process
Solution Approach 2:
The device applies different evaluation criteria locally to different scenarios: when serving cell signal strength is above thresholds, it focuses on non-standalone configuration availability; when signal strength drops or handover is likely, it shifts to evaluating standalone neighbor cell options. This localized approach to determination ensures high accuracy for each specific network condition while avoiding unnecessary complexity in scenarios where simpler assessments suffice
Data Source
AI summary
This disclosure relates to techniques for a wireless device to determine a radio access technology availability indicator to present. A wireless device may establish a wireless link with a cellular network via a cell that operates according to a first radio access technology. The wireless device may determine if access to the cellular network is also available via a cell that operates according to a second radio access technology, by configuration by the serving cell or from another standalone cell. The wireless device may select a radio access technology availability indicator to present based at least in part on determining if access to the cellular network is also available via a cell that operates according to the second radio access technology.