5G Terminal Mobility Pattern Management via Control Plane Function
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Solution Overview
Problem
In 5G communications systems, the fixed configuration of terminal connection status and state transition conditions lead to imbalanced paging and location update overheads, resulting in reduced network performance due to inflexible mobility management.
Innovation Solution
A method and apparatus for managing a terminal's mobility pattern by using mobility management configuration information such as connection status, location area lists, and paging areas, allowing for flexible configuration based on actual application scenarios through a control plane function entity and radio access network node collaboration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If the terminal remains in NCM_CONNECTED state all the time, then paging overheads are reduced, but location update overheads increase when the terminal moves to a new RAN node
Solution Approach 1:
The patent applies dynamics by making the mobility management configuration adjustable and adaptive rather than fixed. The network can dynamically select between different mobility management modes (first mobility management mode with longer location update intervals and second mobility management mode with shorter intervals) based on terminal movement characteristics, allowing the system to optimize between paging overhead and location update overhead in real-time
Solution Approach 2:
The patent changes the parameter of mobility management configuration by introducing multiple configurable modes with different location update timer values and paging area settings. By varying these parameters based on terminal behavior patterns, the system can reduce paging overhead when the terminal is stationary while minimizing location update overhead when the terminal moves, thus resolving the contradiction between the two overhead types
2Device complexity
If the terminal switches to NCM_IDLE state after data transmission, then location update overheads are reduced, but paging overheads increase when downlink data needs to be sent
Solution Approach 1:
The patent applies preliminary action by having the network pre-configure and select appropriate mobility management modes before data transmission occurs. The network can anticipate future data needs and maintain the terminal in a state that balances location update and paging overheads, rather than reacting after the contradiction occurs
Solution Approach 2:
The patent implements feedback mechanisms where the network monitors terminal behavior patterns and adjusts mobility management configuration accordingly. By continuously observing terminal movement and data transmission patterns, the network can optimize the selection between different mobility management modes to minimize total overhead
3Device complexity
If fixed configuration of terminal connection status is used, then device complexity is reduced, but adaptability to actual application scenarios deteriorates
Solution Approach 1:
The patent transforms the fixed mobility management configuration into a dynamic, selectable configuration. The network can choose between different mobility management modes based on actual application scenarios and terminal behavior, providing adaptability while maintaining relatively simple configuration mechanisms through predefined modes
Solution Approach 2:
The patent introduces parameter changes by allowing the network to adjust mobility management parameters such as location update timer values and paging area settings. This enables the system to adapt to different application scenarios (e.g., high-mobility vs. low-mobility terminals) without requiring completely different configuration systems
Data Source
AI summary
A method and an apparatus for managing a mobility pattern of a terminal are disclosed, to flexibly configure and manage a mobility pattern of a terminal based on an actual application scenario of the terminal, and optimize network performance. The method is: obtaining, by a control plane function (CPF) entity, mobility pattern related information of a terminal; determining, by the CPF entity, a first mobility pattern of the terminal based on the mobility pattern related information of the terminal; and sending, by the CPF entity, the determined first mobility pattern to a radio access network (RAN) node, where the first mobility pattern is used by the RAN node to determine a second mobility pattern of the terminal.