Wireless Device Capability Matching for SIM Mismatch Prevention
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Solution Overview
Problem
Wireless communication devices often experience undesired behavior when connected to identification units with mismatched capabilities, leading to failed service requests and network overload, particularly in scenarios where users attempt emergency calls without suitable SIM cards.
Innovation Solution
A method for a wireless communication device to determine its own and an identification unit's capabilities, analyze differences, and take measures to handle mismatches, such as notifying the user or automatically switching to a compatible identification unit, to prevent futile requests and ensure reliable connectivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the wireless communication device connects to multiple identification units with different capabilities, then the device can access diverse cellular network services, but service requests may be rejected due to capability mismatch
Solution Approach 1:
The patent applies preliminary action by determining and comparing capability sets before attempting service requests. The wireless communication device determines its own capability set and the identification unit's capability set in advance, analyzes differences between them, and only establishes connection or proceeds with service requests when capabilities are compatible. This prevents futile service requests that would be rejected due to capability mismatch.
2Ease of operation
If the device attempts service requests without capability verification, then user operations are simple, but network signaling overhead increases due to repeated failed requests
Solution Approach 1:
The patent applies self-service by implementing automatic capability verification and mismatch handling without user intervention. The wireless communication device automatically determines capabilities, compares capability sets, detects mismatches, and handles them through predefined actions (such as selecting alternative identification units). This maintains ease of operation for users while preventing network signaling overhead from repeated failed requests.
3Adaptability or versatility
If the device uses remote SIM access protocol to access credentials from handheld device, then the entertainment unit can operate without second SIM, but capability mismatch with data-only SIM causes service failure
Solution Approach 1:
The patent applies feedback by implementing capability verification before service execution. When the entertainment unit accesses credentials from a handheld device via remote SIM access protocol, the system first determines the capability set of the accessed identification unit, compares it with the required service capabilities, and detects mismatches. Based on this feedback, the system can prevent attempting voice calls with data-only SIMs or switch to appropriate identification units, ensuring service availability.
Data Source
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AI summary
The present invention relates to a method for interaction of a wireless communication device with an identification unit, the wireless communication device being connected with said identification unit, the wireless communication device further operating within a cellular network by means of said identification unit, said identification unit being configured to carry information representing a subscription for operating a wireless communication device in the cellular network, the wireless communication device and the identification unit being adapted to provide each a set of capabilities of operation within the cellular network, wherein the method comprises the steps of: - determining a first set of information representing the capabilities of the wireless communication device, - determining a second set of information representing the capabilities of the identification unit, - analysing the first and the second set of information for differences, - carrying out measures for handling of differences, in case differences have been detected at the analysing step