Cloned SIM Backoff Timer for Network Attachment Collision
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Solution Overview
Problem
Current mobile communication networks face service outages and degradation due to collisions between cloned subscriber identity modules when multiple devices with identical IMSI and MSISDN attempt to attach to the network simultaneously, limiting the size of SIM card pools and their beneficial usage.
Innovation Solution
Implementing a method that uses a backoff timer to manage attachment requests, rejecting subsequent requests with a waiting time interval to prevent collisions, and distributing connection requests over time to reduce network load and battery drain, allowing larger pools of cloned SIM cards without service interruption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If multiple cloned subscriber identity modules with identical IMSI and MSISDN are allowed to attach to the mobile network simultaneously, then the pool size of cloned SIM cards can be increased to save resources and costs, but collisions occur between cloned modules causing service outages and degradation
Solution Approach 1:
The patent implements periodic attachment attempts with backoff intervals. When a cloned SIM card experiences a collision during attachment, it enters a backoff state and retries after a predetermined period. This periodic action allows multiple cloned SIMs to share the network resource over time without simultaneous conflicts, thereby increasing the effective pool size while maintaining service reliability.
Solution Approach 2:
The network performs preliminary detection to identify whether a cloned SIM card is already attached before allowing a new attachment. By checking the attachment status in advance and rejecting duplicate attachment attempts with backoff instructions, the system prevents collisions before they occur, enabling larger pools of cloned SIMs to operate reliably.
2Reliability
If cloned subscriber identity modules attempt to attach to the network frequently, then service availability is improved, but network load increases and battery drain occurs
Solution Approach 1:
The patent implements periodic attachment attempts with backoff intervals. When a cloned SIM card experiences a collision during attachment, it enters a backoff state and retries after a predetermined period. This periodic action allows multiple cloned SIMs to share the network resource over time without simultaneous conflicts, thereby increasing the effective pool size while maintaining service reliability.
Solution Approach 2:
The backoff period is dynamically adjusted based on network conditions and collision frequency. The network can modify the backoff duration to optimize between service availability and energy consumption, allowing the system to adapt to varying loads and requirements.
Data Source
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Figure 3
AI summary
The invention relates to a method for exchanging data with a mobile communication network and/or an MTC using at least one group and/or an MTC of cloned subscriber identity modules and/or an MTC, the mobile communication network and/or an MTC comprising an access network and/or an MTC and a core network and/or an MTC, wherein the group and/or an MTC of cloned subscriber identity modules and/or an MTC comprises a plurality of separate subscriber identity modules, each having an assigned IMSI (International Mobile Subscriber Identity) and an assigned MSISDN (Mobile Subscriber Integrated Services Digital Network Number), the assigned IMSI and/ or the assigned MSISDN being identical for the subscriber identity modules of the group and/or an MTC of cloned subscriber identity modules, and wherein the group and/or an MTC of cloned subscriber identity modules and/or an MTC comprises at least a first cloned subscriber identity module and/or an MTC and a second cloned subscriber identity module and/or an MTC, wherein in case that the user equipment and/or the MTC device corresponding to the first cloned subscriber identity module and/or an MTC is already attached to the mobile communication network and/or an MTC.