5G SA Registration Anomaly Handling With Early LTE Fallback
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Solution Overview
Problem
Network registration failures due to anomalies or poor environmental signals in 5G standalone (SA) networks result in time-consuming registration processes, delaying service resumption and degrading user experience.
Innovation Solution
A method for processing network registration anomalies involves a terminal device obtaining failure cause information and cumulative counts to determine if early termination conditions are met, allowing it to stop attempts on the 5G SA network and switch to a different network like LTE, reducing the need for multiple retries.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the terminal device follows the protocol to attempt registration multiple times (up to 5 attempts) before giving up, then the registration reliability is improved, but the registration time is excessively long and services cannot be quickly resumed
Solution Approach 1:
The terminal device monitors registration failure cause information and provides feedback to the decision-making logic. When the failure cause matches preset anomaly causes (such as link establishment failure, link release, no response, or registration reject) and the cumulative failure count reaches the first preset count, the system triggers early termination of registration attempts. This feedback mechanism enables dynamic adjustment of registration behavior based on real-time network conditions, resolving the contradiction between maintaining reliability and reducing time loss.
2Reliability
If the terminal device continuously retries registration in the same network, then the chance of successful registration is improved, but the user service experience deteriorates due to prolonged service interruption
Solution Approach 1:
The terminal device dynamically adjusts its registration strategy based on real-time network conditions. Instead of rigidly following the protocol to exhaust all 5 attempts, the system transitions from persistent retry behavior to early termination and network switching when anomaly conditions are detected. This dynamic adaptation allows the terminal to prioritize service availability by switching to alternative networks, thereby improving user experience while maintaining reasonable registration success probability.
3Productivity
If the terminal device switches to another network early upon detecting anomalies, then the service resumption speed is improved, but the registration reliability may be compromised by premature termination
Solution Approach 1:
The terminal device performs preliminary actions by pre-configuring the first preset count threshold and monitoring registration failure causes in advance. When the cumulative failure count reaches this pre-set threshold and the failure causes match known anomaly patterns, the system is already prepared to trigger early termination and network switching. This preliminary preparation enables rapid response to network anomalies, improving service resumption speed while maintaining registration reliability through intelligent threshold-based decision-making.
Data Source
AI summary
This application provides a method for processing a network registration anomaly, an apparatus, and a storage medium. In a 5G SA network registration process, if an anomaly occurs in a registration, a terminal device obtains registration failure cause information and a cumulative failure count, to determine whether a condition for ending the registration early is met. If the condition is met, the 5G SA network registration process is ended early, and there is no need to re-attempt for five times according to a protocol, thereby quickly falling back to an LTE network to resume services.