Anchor Cell Selection for Dual-Connectivity Reliability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In wireless communication networks, particularly with 5G and LTE technologies, there is a need for improved cell selection techniques to ensure consistent and reliable dual-connectivity, as UEs often experience poor coverage and diminished throughput due to the lack of prioritization of anchor cells, leading to inconsistent access to 5G/NR services.
Innovation Solution
A method where user equipment (UE) determines conditions for connecting to anchor cells based on measurement thresholds, data requirements, battery state, or user interactions, and maintains a list of anchor cells for dual-connectivity, biasing measurements to prefer anchor cells for handover and cell reselection, thereby increasing the likelihood of maintaining a stable 5G/NR connection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If UE performs cell selection without prioritizing anchor cells, then cell selection process is simple, but connection reliability and throughput are poor
Solution Approach 1:
The patent applies preliminary action by pre-identifying and maintaining a list of anchor cells before actual connection establishment. The UE determines conditions for connecting to anchor cells and biases measurements toward anchor cells in advance, ensuring that when connection is needed, the UE already has prioritized target cells ready, thereby improving connection reliability without adding significant complexity to the overall cell selection process
Solution Approach 2:
The patent applies local quality by treating anchor cells differently from non-anchor cells in the cell selection process. The UE applies special weighting and prioritization specifically to anchor cells when performing cell reselection and handover decisions, while maintaining standard evaluation for other cells. This localized differentiation improves connection reliability for 5G/NR services without requiring complete redesign of the cell selection algorithm
2Reliability
If UE does not bias measurements toward anchor cells, then measurement process is simple, but access to 5G/NR services is inconsistent
Solution Approach 1:
The patent applies parameter changes by modifying measurement parameters and thresholds when evaluating anchor cells versus non-anchor cells. The UE adjusts measurement criteria dynamically based on whether the target cell is identified as an anchor cell, applying more favorable thresholds and weights to anchor cell measurements. This enables consistent 5G/NR service access while maintaining measurement process simplicity through parameter adjustment rather than fundamental process changes
3Productivity
If UE camps on non-anchor cells, then cell selection is straightforward, but throughput is diminished
Solution Approach 1:
The patent applies feedback mechanisms where the UE continuously monitors connection conditions and uses this feedback to adjust cell selection decisions. When the UE detects that it is camped on a non-anchor cell or that 5G/NR services are available through anchor cells, it uses this feedback information to trigger cell reselection toward anchor cells. This feedback-driven approach improves throughput while maintaining ease of operation through automated, intelligent decision-making
Data Source
AI summary
A user equipment (UE) may determine that a condition associated with a first radio access technology (RAT) is satisfied. The UE may select a cell, from a list of anchor cells associated with a second RAT and configured for dual-connectivity, for a connection based at least in part on the determination that the condition associated with the first RAT is satisfied. The UE may establish the connection with the selected cell. Numerous other aspects are provided.