Baseband Processor Event Messages for UICC Status
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Solution Overview
Problem
In LTE networks, the Universal Integrated Circuit Card (UICC) in mobile stations relies on a trial-and-error approach to determine the status of data call connections, leading to shortened battery life and increased wait times for users due to excessive polling, with potential service disruptions when the network is not available.
Innovation Solution
Implementing event message signals generated by the baseband processor to inform the UICC of data call connection events, such as 'data call connected', 'data call disconnected', and 'data call in-progress', eliminating the need for the UICC to poll the user device and reducing unnecessary polling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the UICC uses polling to determine data call connection status, then the UICC can obtain connection status information, but battery life is shortened and wait time increases
Solution Approach 1:
Instead of the UICC actively polling the user device to query connection status, the system inverts the information flow by having the baseband processor automatically push event messages to the UICC when connection status changes occur. This reversal eliminates the need for continuous polling while ensuring the UICC receives timely status updates.
Solution Approach 2:
The baseband processor implements a feedback mechanism where it automatically generates and sends event messages to the UICC whenever data call connection status changes (connected, disconnected, in-progress). This feedback loop ensures the UICC receives real-time status information without needing to initiate polling requests, thereby conserving battery power.
2Reliability
If the UICC uses polling to determine data call connection status, then the UICC can obtain connection status information, but customer wait time increases
Solution Approach 1:
The baseband processor performs preliminary actions by proactively detecting connection status changes and immediately generating event messages to notify the UICC. This preliminary notification mechanism ensures the UICC receives status information as soon as changes occur, eliminating the delay inherent in polling-based approaches where the UICC must wait for the next polling interval.
3Reliability
If the UICC continuously polls the user device, then the UICC can determine connection status, but excessive polling occurs when the network is not available
Solution Approach 1:
The baseband processor implements a feedback mechanism where it automatically generates and sends event messages to the UICC whenever data call connection status changes (connected, disconnected, in-progress). This feedback loop ensures the UICC receives real-time status information without needing to initiate polling requests, thereby conserving battery power.
Data Source
AI summary
Event messages indicating events in the life of data call connections for a mobile station are automatically provided by a user device of the mobile station to a mobile client application or a UICC contained in the mobile station to inform the mobile client application or UICC of the status of a data call connection. The event messages include data call connected, data call disconnected, and data call in-progress messages, which are provided without being triggered by the UICC. The data call connected event message is generated after a successful data attach procedure. The data call disconnected event message is generated when a previously established data call connection is lost or when the mobile station is in limited service areas. The data call in-progress event message is generated when a data call connection is requested while another data call connection is already in progress.