Capability-Based Cell Prioritization for UE Reselection
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Solution Overview
Problem
Existing wireless communication systems fail to adequately prioritize cell selection and reselection based on capabilities such as dual connectivity and carrier aggregation, leading to suboptimal throughput and connection performance.
Innovation Solution
A UE prioritizes cell selection and reselection based on capabilities like dual connectivity and carrier aggregation by assigning higher priorities to cells with these features, using criteria such as power level, cell type, and MIMO layer capability, and stores these priorities in a data structure for efficient cell searching.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the UE performs cell selection and reselection based on conventional criteria (signal strength, quality), then connection reliability is maintained, but throughput performance deteriorates due to inability to identify cells with advanced capabilities
Solution Approach 1:
The patent introduces new parameters for cell selection and reselection by incorporating cell capability information (dual connectivity capability, carrier aggregation capability, bandwidth capability, MIMO layer capability) into the conventional cell selection criteria. The UE determines cell priorities based on these capability parameters, allowing it to select cells that can provide higher throughput while maintaining connection reliability through the established cell selection procedures.
2Loss of time
If the UE searches for all available cells with equal frequency, then comprehensive cell information is gathered, but time consumption increases due to lack of prioritization
Solution Approach 1:
The patent applies preliminary action by having the UE prioritize the search for cells based on their capabilities before conducting the actual cell selection process. The UE determines cell priorities based on capability information (such as dual connectivity, carrier aggregation, bandwidth, and MIMO capabilities) and performs cell measurements and selections in accordance with these predetermined priorities, thereby reducing the time required to identify suitable cells without missing important capability information.
3Adaptability or versatility
If the UE selects cells without considering capability differences, then device complexity is minimized, but adaptability to different network conditions deteriorates
Solution Approach 1:
The patent applies segmentation by categorizing cells into different priority levels based on their capabilities. The UE segments the cell search space by determining priorities for different cells based on their capability characteristics (dual connectivity capability, carrier aggregation capability, bandwidth capability, MIMO layer capability). This segmentation allows the UE to adapt to different network conditions by selecting from appropriate cell categories while managing device complexity through structured priority-based selection.
Data Source
AI summary
Methods, systems, and devices for wireless communications are described. A user equipment (UE) may identify a group of cells available for cell selection or reselection, where the group of cells includes a first subset of cells that each have at least one capability (e.g., of a set of capabilities) and a second subset of cells. The UE may assign a relatively higher respective priority to each cell within the first subset of cells than each cell within the second subset of cells based on each cell within the first subset of cells having at least one capability. The UE may select a cell from the group of cells based on the respective priority and may attempt to camp on the selected cell. Additionally, the UE may store the assigned respective priorities in a data structure at the UE.