Inter-system Ping-Pong Suppression in 5G SA Networks
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Solution Overview
Problem
In 5G networks deployed as Stand Alone (SA) networks, terminal devices can get stuck in an inter-system ping-pong state, repeatedly switching between 4G and 5G, leading to poor network quality and performance due to poor network parameter configuration.
Innovation Solution
An inter-system ping-pong suppression method that determines a target network standard when the device is in an inter-system ping-pong state and closes the network capability in other network standards, preventing the device from switching to cells using different network standards, thereby terminating the ping-pong state.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the terminal device maintains capability to access both 4G and 5G networks, then network adaptability and versatility are improved, but the device enters inter-system ping-pong state causing network instability and performance degradation
Solution Approach 1:
Instead of maintaining both 4G and 5G capabilities simultaneously, the patent inverts the approach by dynamically disabling one network capability when the other is determined to be the target network. This prevents the ping-pong effect by ensuring only one network standard is active at a time, while still allowing switching between them through the capability management mechanism.
Solution Approach 2:
The patent implements dynamic capability management where the terminal device adjusts its network access capabilities based on real-time network conditions and target network determination. The capability to access 4G or 5G networks is dynamically enabled or disabled according to the determined target network, preventing static configuration issues that cause ping-pong states.
2Adaptability or versatility
If the terminal device frequently switches between 4G and 5G networks, then network adaptability is improved, but network quality and performance deteriorate due to ping-pong state
Solution Approach 1:
The patent applies preliminary anti-action by proactively managing network capabilities before the ping-pong state can occur. When a target network is determined, the terminal preemptively disables capabilities for other network standards, preventing the harmful switching behavior before it starts, rather than reacting after performance degradation occurs.
Solution Approach 2:
The patent changes the operational parameters of the network capabilities by dynamically enabling or disabling access to 4G and 5G networks based on the determined target network. This parameter change (capability state) prevents the device from operating in a state where multiple network standards are simultaneously accessible, which is the root cause of ping-pong behavior.
3Ease of operation
If the terminal device maintains all network capabilities enabled, then ease of operation is improved, but the device gets stuck in inter-system ping-pong state
Solution Approach 1:
The patent inverts the conventional approach by disabling network capabilities rather than keeping them all enabled. This inversion prevents the ping-pong state while maintaining ease of operation through automated capability management, where the system handles the complexity of capability adjustment based on target network determination.
Solution Approach 2:
The terminal device performs self-service by automatically determining the target network and adjusting its own network capabilities without external intervention. This self-management mechanism prevents ping-pong states while maintaining operational convenience, as the device autonomously optimizes its network access based on current conditions.
Data Source
AI summary
The inter-system ping-pong suppression method, an apparatus, a terminal device and a storage medium are provided. The method comprises: determining a target network standard in at least two network standards when the terminal device is in inter-system ping-pong state, wherein the inter-system ping-pong state refers to a state that the terminal device repeatedly switches between cells of at least two network standards; closing the network capability of the terminal device in other network standards, wherein the other network standards are the network standards other than the target network standard among at least two network standards.