SIM Card MSISDN Update via Service Management Platform
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Solution Overview
Problem
Existing mobile communication systems face challenges in maintaining an accurate Mobile Subscriber Integrated Digital Services Network (MSISDN) identity, particularly due to issues with invalid or missing MSISDN on SIM cards, which disrupts fixed-mobile convergence and communication services.
Innovation Solution
The technology employs a Service Management Platform (SMP) to detect and correct invalid MSISDN on mobile devices by disabling calling line identification restrictions, contacting the SMP, and updating the SIM card with the correct MSISDN through various methods such as SMS or OTA updates, ensuring seamless communication and fixed-mobile convergence.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If MSISDN is manually configured on SIM cards during installation, then initial identity setup is completed, but the MSISDN may become invalid or missing over time, disrupting communication services
Solution Approach 1:
The system performs preliminary configuration of MSISDN on SIM cards during installation, but anticipates future invalidation by implementing automated detection and update mechanisms. The SMP proactively monitors MSISDN validity and automatically updates expired or incorrect MSISDN values, preventing service disruption before it occurs.
Solution Approach 2:
The system implements a feedback loop where the SMP continuously monitors the validity of MSISDN on SIM cards. When invalidation is detected (through network verification or expiration checks), the SMP automatically initiates an update process by contacting the SIM card via SMS or OTA messages to correct the MSISDN value, ensuring ongoing reliability.
2Reliability
If automated detection and update mechanisms are implemented, then MSISDN accuracy is maintained, but system complexity increases
Solution Approach 1:
The Service Management Platform (SMP) acts as an intermediary layer between the SIM cards and the network infrastructure. It centralizes the complexity of MSISDN management, including detection, validation, and update operations, while presenting a simplified interface to both users and network systems. This mediator approach isolates complexity within the SMP without burdening other system components.
Solution Approach 2:
The system enables SIM cards to self-correct their MSISDN information through automated interactions with the SMP. When a SIM card's MSISDN is detected as invalid, the card automatically receives update messages via SMS or OTA protocols and self-updates its stored value without requiring manual user intervention or complex external management procedures.
3Device complexity
If manual updates are required for invalid MSISDN, then system complexity is reduced, but service disruption occurs until manual correction
Solution Approach 1:
The automated detection and update mechanism rapidly identifies and corrects invalid MSISDN values, skipping the lengthy manual intervention process. The SMP continuously monitors MSISDN validity and immediately initiates correction upon detection, significantly reducing the time window during which communication services remain disrupted compared to manual update procedures.
Data Source
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AI summary
The application relates to a "mobile communication device" with a "SIM card". As specified in 3GPP TS 31.102, a MSISDN can be written to a SIM card. However it is not uncommon that the MSISDN is either not written on the SIM card, or an incorrect MSISDN is written on the SIM card. Since a valid MSISDN is required on a SIM card for the device to gain the benefits of fixed-mobile convergence by operating with a so-called "extended enterprise voice network" comprising an enterprise server, a private branch exchange and a service management platform, the MSISDN is transmitted from a server of this network to the mobile device where it is written to the SIM card.