MR-DC Cell Selection Prioritizing 5G-Capable Cells
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Solution Overview
Problem
Existing 5G network technologies face delays in cell selection and reselection due to the lack of consideration for 5G capability in multi-radio access technology (MR-DC) systems, leading to inefficient handovers and user inconvenience.
Innovation Solution
A method and apparatus that prioritize cells supporting EN-DC, NGEN-DC, and NE-DC by scanning for frequencies with 5G capability, updating stored information, and camping on cells with dual connectivity to enhance 5G service availability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional cell selection and reselection methods are used without considering 5G capability, then the UE can camp on any available cell, but the UE may not camp on a 5G supporting cell in overlapping areas, causing processing delays for 5G services
Solution Approach 1:
The patent applies preliminary action by having the UE proactively identify and prioritize cells that support 5G capabilities (EN-DC, NGEN-DC, or NE-DC) during the cell selection process. Instead of waiting for network handover commands, the UE pre-selects 5G-capable cells based on stored frequency information and cell capabilities, enabling faster 5G service establishment without conventional handover delays
Solution Approach 2:
The patent changes the cell selection parameter by introducing a preference criterion for 5G-capable cells. The UE modifies its cell selection behavior to prioritize cells supporting dual connectivity architectures (EN-DC, NGEN-DC, NE-DC) over traditional LTE-only cells, thereby accelerating 5G service access in overlapping coverage areas
2Adaptability or versatility
If the UE prioritizes cells supporting EN-DC, NGEN-DC, and NE-DC during cell selection, then 5G service availability is enhanced, but the complexity of cell selection criteria increases
Solution Approach 1:
The patent applies segmentation by dividing cell selection into distinct phases: initial cell identification based on frequency information, 5G capability detection through SIB message parsing, and preferential selection of dual-connectivity cells. This segmented approach manages complexity by handling each aspect separately rather than simultaneously
Solution Approach 2:
The patent uses preliminary action by pre-storing frequency information for cells that support dual connectivity (EN-DC, NGEN-DC, NE-DC) before the UE needs to camp. This advance preparation simplifies the actual cell selection process, as the UE can directly reference stored information rather than analyzing all possible cells in real-time
Data Source
AI summary
Methods and apparatuses are provided in a wireless communication system. A user equipment (UE) performs a method including scanning at least one frequency, finding a plurality of cells based on the at least one frequency, obtaining cell information on the plurality of cells, identifying, based on the cell information, a first cell to camp on from among the plurality of cells, wherein, in identifying the first cell, a cell supporting an evolved-universal terrestrial radio access new radio-dual connectivity (EN-DC) is preferred by the UE over a cell not supporting the EN-DC, and camping on the first cell.