Congestion-Aware Return to 5G SA After Voice Fallback
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Solution Overview
Problem
Existing 5G networks face challenges in transitioning from Non-Standalone (NSA) to Standalone (SA) mode during voice fallback due to network congestion, leading to potential signaling congestion and dropped calls, which affect user experience and network performance.
Innovation Solution
Implementing network congestion-aware logic to conditionally delay the return to Standalone mode after voice fallback, based on network loading metrics such as control and data channel loads, RRC connections, and core network signaling, using automated learning and machine learning to optimize the transition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the network immediately returns to Standalone mode after voice fallback, then network resource utilization is improved, but network signaling congestion occurs and calls may be dropped
Solution Approach 1:
The patent implements dynamic mode selection where the network can switch between NSA and SA modes based on real-time congestion conditions. The system dynamically adjusts the return timing to SA mode by implementing conditional delays when congestion is detected, allowing flexible adaptation to changing network conditions rather than following a fixed immediate return protocol
Solution Approach 2:
The patent applies preliminary congestion assessment before executing the mode transition. By evaluating network loading metrics and congestion conditions in advance of the actual return to SA mode, the system can proactively delay the transition if congestion is detected, preventing signaling storms before they occur
2Reliability
If the network delays the return to Standalone mode, then signaling congestion is reduced, but network resource utilization decreases
Solution Approach 1:
The patent implements a feedback mechanism where the network continuously monitors congestion conditions and loading metrics, then adjusts the return timing to SA mode based on this feedback. When congestion is detected, the system delays the transition; when conditions improve, it proceeds with the return, creating a closed-loop control system that balances reliability and resource utilization
Solution Approach 2:
The patent changes the timing parameter of the mode transition based on network conditions. By dynamically adjusting the delay duration before returning to SA mode according to measured congestion levels and loading metrics, the system optimizes the balance between preventing signaling congestion and maintaining efficient resource utilization
Data Source
AI summary
Facilitating conditional fast return to stand alone advanced networks after voice fall back with network congestion awareness is provided herein. Operations of a system can include controlling a first communication for a user equipment based on a connection request that comprises an indication of a fall back procedure. The operations can also include, based on a determination that the first communication has completed at the user equipment, releasing a first control of the user equipment. Further, the operations can include delaying a redirection of the user equipment to the network equipment for a second control of a second communication scheduled to occur at the user equipment. Delaying of the redirection is based on a determined network congestion level applicable to the communication network being determined to be at most a defined network congestion level.