Mobile Network Handover Control Using Quality-Based Home Reconnection
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Solution Overview
Problem
The existing methods for switching a mobile terminal from a visited network to a home network are often time-consuming, requiring a long period for cell switching and necessitate dedicated software installation in the mobile terminal.
Innovation Solution
A mobile communication system comprising a base station and a mobility management device that manages terminal mobility by acquiring network identification information and communication quality, instructing the terminal to connect to the home network based on quality information, thereby facilitating swift switching.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If cell switching is performed only in a configured cell switching period, then network management is simplified, but switching time from visited network to home network becomes excessively long
Solution Approach 1:
The patent makes the cell switching mechanism dynamic by allowing switching to occur not only at predetermined intervals but also immediately when specific triggering conditions are met. The mobility management device monitors quality information and network identification information in real-time, and instructs the mobile terminal to switch cells immediately when the terminal enters the home network coverage area, thereby reducing switching time while maintaining manageable complexity through condition-based activation.
Solution Approach 2:
The patent implements a feedback mechanism where the mobility management device continuously receives quality information and network identification information from the mobile terminal, evaluates whether switching conditions are met, and provides instructions back to the terminal. This closed-loop feedback system enables timely switching decisions based on real-time network conditions without requiring complex predetermined scheduling.
2Reliability
If dedicated software is installed in the mobile terminal to enable switching, then switching capability is improved, but device complexity and installation requirements increase
Solution Approach 1:
The patent introduces a mobility management device as an intermediary between the mobile terminal and the network. This intermediary handles the complex switching logic, quality information evaluation, and switching decision-making centrally, eliminating the need for dedicated switching software in each mobile terminal. The terminal only needs to report quality information and network identification, while the mobility management device performs the intelligent switching control.
3Reliability
If the mobile terminal continuously monitors network quality, then connection quality is optimized, but energy consumption increases
Solution Approach 1:
The patent implements periodic monitoring where the mobile terminal measures and reports quality information at predetermined intervals rather than continuously. The mobility management device uses these periodic reports to determine when switching conditions are met, balancing connection quality optimization with reduced energy consumption by avoiding constant monitoring while still capturing sufficient quality data for informed switching decisions.
Data Source
AI summary
A mobile communication system includes a base station and a mobility management device and controls a connection between a mobile terminal and a plurality of networks. The mobility management device is connected to the base station and manages mobility of the mobile terminal in a cell of the base station. The mobility management device acquires, from the mobile terminal, network identification information that identifies a first network when the mobile terminal connects to the base station. The base station receives, from the mobile terminal, quality information that indicates communication quality between a base station of the first network identified by the network identification information and the mobile terminal. The mobility management device instructs the mobile terminal, based on the quality information, to connect to the first network identified by the network identification information.