Data Communication Control Apparatus for Mobile Terminal Location Tracking
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Solution Overview
Problem
In mobile communication systems, frequent area switching by mobile terminal devices leads to inefficient location registration due to increased usage of wireless control channels, resulting in decreased success rates and quality of service, especially when devices move before being registered in the location register.
Innovation Solution
A data communication control apparatus and system that utilize a database to associate terminal identification numbers with location and network addresses, updating and correcting this information to ensure seamless data transfer even when devices move between service areas, using a network with repeaters to relay data and manage location information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the area of coverage by each wireless station is made smaller for effective use of limited resources, then resource utilization efficiency is improved, but the frequency of area switching increases and location registration becomes inefficient
Solution Approach 1:
The system performs preliminary location registration by storing location information in a database before the mobile terminal actually moves to a new area. When a terminal moves, the network can immediately retrieve its location from the database without requiring real-time registration, thus preventing the inefficiency caused by frequent area switching while maintaining small coverage areas for resource efficiency
Solution Approach 2:
A database is introduced as an intermediary between the location register and mobile terminals. The database stores location information and serves as a buffer that decouples the frequent location changes from the registration process, allowing the system to handle frequent area switching without overwhelming the location registration mechanism
2Measurement precision
If location registration is performed frequently due to frequent area switching, then location accuracy is improved, but the used portion of the wireless control channel increases and service quality deteriorates
Solution Approach 1:
Location information is registered in advance and stored in the database before the terminal actually needs it. This preliminary registration ensures location accuracy is maintained while avoiding frequent use of wireless control channels, thereby preserving service quality and reducing channel congestion
Solution Approach 2:
The system uses stored location information from the database to automatically route data without requiring frequent active registration requests from terminals. The database itself serves the location tracking function, reducing the burden on wireless control channels and maintaining service quality
3Adaptability or versatility
If data is sent to a mobile terminal that has moved to another service area, then data communication capability is improved, but data may be lost if the terminal has not completed location registration
Solution Approach 1:
The database acts as an intermediary that stores location information for mobile terminals. When data needs to be sent to a moved terminal, the system queries the database to retrieve the terminal's current location information, ensuring reliable data delivery even before the terminal completes formal location registration in the location register
Solution Approach 2:
The system continuously updates the database with terminal location information and uses this feedback to determine the correct routing for data transmission. This feedback mechanism ensures that data is always directed to the terminal's current location, maintaining communication reliability during movement between service areas
Data Source
AI summary
A user location monitoring unit of a data communication control apparatus monitors a message sent from a wireless device via a repeater. Upon detection of a change in the location of the wireless device, the user location monitoring unit updates the location information in the database and notifies via the Internet a management server of the location change. Upon receipt of the message via the Internet, a destination address confirming and correcting unit of the data communication control apparatus uses the user ID of a destination wireless device as a search keyword to search the database. In turn, the destination address confirming and correcting unit corrects the destination address of the message to the latest address of the pertinent user ID and outputs the corrected message to a received message forwarding unit.