User Equipment Network Selection Using Signal Quality Thresholds
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Solution Overview
Problem
Current mobile communication networks face issues with network selection, particularly in unfavorable radio coverage conditions, where user equipment may fail to receive or transmit data due to inadequate consideration of signal strength in the selection process, leading to devices being stuck on a network and requiring manual interventions.
Innovation Solution
A method for user equipment to apply an enhanced network selection criterion, which considers only radio cells with reception conditions meeting or exceeding specific signal quality thresholds, ensuring better network selection and data transmission capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the user equipment applies conventional cell selection criterion only, then the device can camp on any suitable radio cell, but the device may select networks with poor signal quality leading to data transmission failures
Solution Approach 1:
The network selection process is segmented into two distinct stages: cell selection stage (using cell selection criterion) and network selection stage (using enhanced network selection criterion). This segmentation allows each stage to focus on specific criteria, improving overall reliability without overwhelming complexity.
Solution Approach 2:
The patent applies preliminary filtering by requiring radio cells to meet the cell selection criterion before proceeding to network selection. This preliminary action eliminates obviously unsuitable cells early, ensuring that subsequent network selection operates on a refined set of candidates.
2Reliability
If the user equipment selects networks based on automatic network selection mode without signal quality thresholds, then the selection process is simple and fast, but the device may be stuck on networks with poor coverage requiring manual intervention
Solution Approach 1:
The enhanced network selection criterion enables the user equipment to automatically select networks based on signal quality thresholds without requiring manual intervention. The device serves itself by making intelligent network selection decisions, eliminating the need for user intervention in unfavorable radio conditions.
Solution Approach 2:
The patent incorporates feedback mechanisms where the user equipment continuously monitors reception conditions and automatically re-evaluates network selection based on updated signal quality measurements. This feedback loop ensures the device remains on networks with adequate signal quality without manual intervention.
3Reliability
If the user equipment considers all suitable radio cells for network selection, then the selection process is comprehensive, but the device may select networks with inadequate signal strength leading to communication failures
Solution Approach 1:
The patent introduces an enhanced network selection criterion that adds signal quality threshold parameters to the conventional cell selection criterion. This parameter enhancement filters out radio cells with inadequate signal strength, ensuring only networks meeting minimum quality thresholds are considered for selection.
4Reliability
If the user equipment applies enhanced network selection criterion with signal quality thresholds, then the device prioritizes networks with higher signal quality, but the selection process becomes more complex
Solution Approach 1:
The selection criterion is segmented into two layers: the base cell selection criterion (conventional) and the enhanced network selection criterion (with signal quality thresholds). This layered segmentation manages complexity by building upon existing standards rather than replacing them entirely.
Solution Approach 2:
The patent applies preliminary filtering using the cell selection criterion to identify suitable radio cells before applying the enhanced network selection criterion. This preliminary action reduces the number of candidates, making the subsequent enhanced evaluation more manageable and less complex.
Data Source
AI summary
A method for realizing network selection by a user equipment includes the following steps: in a first step, suitable radio cells of a considered radio access technology are determined by the user equipment based on a cell selection criterion regarding the considered radio access technology; and in a second step, upon initiating network selection according to an automatic network selection mode, only such mobile communication networks corresponding to suitable radio cells of the considered radio access technology are considered for network selection of the user equipment that have or correspond to reception conditions meeting or exceeding an enhanced network selection criterion.