Mobile Transceiver Country Code Authorization Control
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Solution Overview
Problem
Mobile transceivers face challenges in efficiently transitioning between subscriber identity modules and adhering to authorization regulations when operating in different countries, leading to limited or no authorization in roaming modes.
Innovation Solution
A method and system that allow mobile transceivers to determine the country of operation by reading the observed country code within a mobile station data message, and if different from the stored code, transmit an inquiry to a central server to verify authorization, receiving mobile profile data that includes authorized service providers and settings, enabling seamless operation or requiring a secondary SIM for compliance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the mobile transceiver continuously queries authorization status for every country code change, then authorization compliance is improved, but network bandwidth consumption and query processing time increase
Solution Approach 1:
The system performs preliminary actions by caching authorization status information and proactively updating it before actual roaming occurs. The mobile transceiver stores authorization data in local memory and periodically checks for updates, avoiding the need for continuous real-time queries when entering new countries.
Solution Approach 2:
Instead of continuous querying, the system uses periodic action by establishing authorization status at specific trigger points (initialization, country code change) and maintaining it through periodic updates. This reduces query frequency while ensuring compliance is maintained.
2Reliability
If the mobile transceiver queries authorization status for every country code change, then authorization compliance is improved, but the time required for network access increases
Solution Approach 1:
The system performs preliminary actions by pre-establishing authorization status in local memory before the mobile transceiver actually needs to access a network in a new country. This eliminates the need for real-time queries at the moment of network access, significantly reducing access time.
Solution Approach 2:
The system creates a local copy of authorization status information in the mobile transceiver's memory. This cached copy allows the transceiver to make authorization decisions locally without immediately querying the central server, reducing network access time while maintaining compliance through periodic synchronization.
3Device complexity
If the mobile transceiver uses a single subscriber identity module for all countries, then device simplicity is improved, but authorization flexibility and regulatory compliance deteriorate
Solution Approach 1:
The system introduces dynamics by making the active SIM module selection flexible rather than fixed. The mobile transceiver can dynamically switch between multiple SIM modules based on the detected country code and stored authorization information, allowing a single physical device to adapt to different country requirements without physical reconfiguration.
Solution Approach 2:
The system changes the operational parameters by using detected country codes and stored authorization data to determine which SIM module should be active. This parameter-based selection allows the system to adapt SIM configuration based on location without requiring complex manual setup, maintaining simplicity while enabling flexibility.
Data Source
AI summary
Within a mobile station data message, the mobile transceiver reads an observed country code of a visited wireless network to determine a country of operation of the mobile transceiver. The mobile transceiver determines if the observed country code is equal to a stored country code in a subscriber identity module of the mobile transceiver. If the observed country code differs from the stored country code, the mobile transceiver transmits an inquiry data message to a central server via the wireless network to inquire as to whether or not the mobile transceiver is authorized to operate within the observed country. In response to the inquiry, the mobile transceiver may receive mobile profile data related to wireless access or authorized features of the mobile transceiver.