PLMN Selection via Signal Quality and Priority
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Solution Overview
Problem
Existing PLMN selection methods in terminal devices often result in unstable networks and repeated user disconnections due to prioritizing network access based solely on PLMN priority, without considering signal quality.
Innovation Solution
The terminal device acquires first parameters including signal quality and priority for each of at least two PLMNs and selects a PLMN that meets a signal quality requirement and has a relatively high priority, thereby ensuring stable network access.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the terminal device selects PLMN based solely on priority, then the network access speed is improved, but the network stability deteriorates
Solution Approach 1:
The patent changes the selection parameters from considering only PLMN priority to considering both PLMN priority and signal quality (RSRP/RSRQ). This multi-parameter approach resolves the contradiction by ensuring fast access through priority-based filtering while maintaining stability through signal quality verification, preventing selection of poor-quality networks even if they have high priority
2Ease of operation
If the terminal device accesses PLMN with high priority but poor signal quality, then the network access convenience is improved, but the user experience deteriorates
Solution Approach 1:
The patent implements a feedback mechanism where the terminal device continuously monitors signal quality (RSRP and RSRQ) of selected PLMN and compares it against threshold values. When signal quality falls below thresholds, the device automatically re-evaluates and switches to alternative PLMNs, ensuring good user experience while maintaining convenient automatic access
Data Source
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AI summary
Embodiments of the present application provide a network selection method and apparatus, a device and a storage medium, comprising: a terminal device acquires first parameters of each public land mobile network (PLMN) among at least two PLMNs, the first parameters comprising signal quality and priority; and selects a first PLMN from among the at least two PLMNs according to the first parameters of each of the at least two PLMNs. In the technical solution, when the terminal device selects a PLMN, the priority of the PLMN and the signal quality of the PLMN are considered at the same time, so that the signal quality of the selected first PLMN finally meets requirements and has a higher priority, which effectively avoids the problems of a network accessed by a user being unstable and the repeated disconnection of users, thereby improving the user experience.