Terminal Deregistration in Multi-Access Networks
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Solution Overview
Problem
Current mobile communication technologies lack a method for deregistering terminal devices from 3GPP and non-3GPP access networks, leading to inefficiencies in resource management and network operations.
Innovation Solution
A deregistration method and apparatus that determine a terminal device's deregistration state and update its status within the network, allowing for the release of connections and adjustments to PDU sessions across different access networks, ensuring seamless transitions and resource utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a terminal device accesses both 3GPP and non-3GPP access networks simultaneously, then network coverage and service availability are improved, but resource management complexity and system efficiency deteriorate due to lack of deregistration mechanisms
Solution Approach 1:
The patent segments the access network management by introducing separate registration and deregistration procedures for 3GPP and non-3GPP access networks. The deregistration mechanism divides the resource management process into distinct phases: detecting deregistration requests, determining terminal state, and executing appropriate resource release actions, thereby reducing overall management complexity
Solution Approach 2:
The patent implements dynamic state management for terminal devices, transitioning between registered and deregistered states based on network conditions. The system dynamically adjusts resource allocation and session management based on the terminal's current registration state, enabling flexible adaptation to changing network environments while maintaining efficient resource utilization
2Productivity
If deregistration mechanisms are implemented for multi-access networks, then resource management efficiency is improved, but system complexity increases due to additional signaling and state management requirements
Solution Approach 1:
The patent creates a universal deregistration framework that handles both 3GPP and non-3GPP access networks through a common set of procedures and message structures. The deregistration mechanism serves multiple functions: releasing access network resources, updating terminal state, managing PDU sessions, and coordinating between different network elements, thereby improving resource management efficiency without proportionally increasing system complexity
Solution Approach 2:
The patent implements feedback mechanisms where network elements continuously monitor terminal registration states and exchange status information through standardized signaling messages. The system provides feedback loops that detect deregistration requests, confirm resource release completion, and update network elements accordingly, enabling efficient resource management through automated state synchronization
3Measurement precision
If explicit deregistration procedures are implemented, then control precision and resource release completeness are improved, but signaling overhead and processing time increase
Solution Approach 1:
The patent implements preliminary actions by pre-establishing deregistration detection mechanisms and state transition procedures before actual deregistration events occur. Network elements are pre-configured with deregistration detection capabilities and resource release templates, allowing for rapid execution when deregistration requests are received, thereby reducing actual processing time while maintaining precise control
Data Source
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AI summary
Embodiments of this application provide a deregistration method, a session handling method, and an apparatus. The deregistration method includes: determining, by a terminal device, that the terminal device enters a deregistration state of a first access network; and setting, by the terminal device, a status of the terminal device to deregistered from the first access network. According to the method, the terminal device is deregistered from the first access network.