SIM Applet Roaming Data Collection
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Solution Overview
Problem
Wireless communication devices face challenges in efficiently managing network connections and performance data collection, especially when roaming outside their home network, as existing technologies lack effective mechanisms for real-time data collection and network optimization.
Innovation Solution
A method and system where a mobile device, equipped with a SIM applet, searches for home networks, attaches to them, and monitors location to detect roaming scenarios. The SIM applet collects performance data from visited networks, transmits it to a server, and based on this data, the device may detach from one network and attach to another for improved performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the mobile device continuously monitors location and collects performance data while roaming, then the service provider can derive accurate KPIs and optimize network performance, but the device complexity and energy consumption increase
Solution Approach 1:
The patent segments the data collection function by introducing a dedicated SIM applet that operates independently within the mobile device. This applet specifically handles performance data collection, location monitoring, and KPI derivation for roaming networks, separating these functions from the main device operations and reducing overall system complexity
Solution Approach 2:
The SIM applet acts as an intermediary component between the mobile device and the service provider's home network. It collects performance data from visited networks, processes this information locally, and transmits aggregated KPIs to the home network, thereby simplifying the data collection mechanism while maintaining measurement precision
2Reliability
If the SIM applet collects performance data from visited networks during roaming, then the service provider can optimize network selection and improve user experience, but the energy consumption of the mobile device increases
Solution Approach 1:
The SIM applet implements periodic data collection and monitoring rather than continuous operation. It collects performance data at intervals and only activates location monitoring when roaming conditions are detected, reducing energy consumption while maintaining sufficient data accuracy for network optimization decisions
Solution Approach 2:
The SIM applet autonomously detects roaming scenarios and self-manages the data collection process without requiring continuous user intervention or complex device-level coordination. This self-service approach minimizes energy overhead by only activating monitoring functions when actually needed
3Speed
If the mobile device monitors location continuously to detect roaming scenarios, then the device can quickly switch networks for better performance, but the loss of time for network switching increases due to data processing
Solution Approach 1:
The SIM applet performs preliminary actions by pre-detecting roaming scenarios through location monitoring and pre-collecting performance data from visited networks. This allows the device to have network optimization decisions ready in advance, reducing the actual switching time when network changes are needed
Solution Approach 2:
The system implements feedback mechanisms where the SIM applet continuously monitors network performance and location, providing real-time information to the mobile device. This feedback loop enables rapid network switching decisions based on current conditions, improving switching speed while minimizing processing delays through efficient data utilization
Data Source
AI summary
A system and method for monitoring and collecting network data in different roaming environments. The method includes searching, by a mobile device, for one or more home networks in a list of available networks; attaching, by the mobile device, to a home network selected from the list of available networks; monitoring, by the mobile device, location of the mobile device after attaching to the home network; detecting, by the mobile device based on the location of the mobile device, a roaming scenario when the mobile device moves outside the home network and attaches to a visited network not on the list of available networks; and collecting, by a subscriber identification module (SIM) applet on the mobile device, performance data associated with the visited network upon detecting that the mobile device is roaming in the visited network.