Dynamic MSISDN Allocation for Emergency Vehicle Communication
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Solution Overview
Problem
The existing allocation method for Mobile Station International Subscriber Directory Numbers (MSISDNs) in wireless communication networks is inefficient due to the high cost and limited availability of MSISDNs, as most vehicles do not require their assigned MSISDNs frequently, leading to underutilization and increased costs.
Innovation Solution
A method for dynamically allocating MSISDNs to vehicles based on predicted accident likelihood, where MSISDNs are allocated only when the likelihood exceeds a predetermined threshold and de-allocated when the likelihood decreases, using a network device that obtains IMSI data, predicts accident likelihood, and manages the allocation and de-allocation of MSISDNs through a pool of available numbers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If MSISDN is permanently allocated to each vehicle to ensure emergency call functionality, then reliability of emergency service is improved, but cost and resource utilization deteriorate due to underutilization
Solution Approach 1:
The patent implements dynamic MSISDN allocation where the MSISDN is not permanently assigned but temporarily allocated based on real-time accident risk assessment. The system continuously monitors vehicle data (speed, location, weather, traffic conditions) and dynamically adjusts MSISDN allocation status, switching between allocated and deallocated states according to changing risk levels and vehicle positions, thereby optimizing resource utilization while maintaining emergency service reliability when needed
2Reliability
If MSISDN is permanently allocated to each vehicle, then emergency call availability is improved, but resource utilization deteriorates due to minuscule accident ratio
Solution Approach 1:
The system transitions from static permanent allocation to dynamic temporary allocation based on real-time risk assessment. MSISDN is allocated only when accident probability exceeds a threshold, deallocated when below threshold, and reallocated upon threshold crossing again, maximizing resource utilization while ensuring availability when needed
Solution Approach 2:
The patent changes the allocation parameter from permanent (binary state) to temporary (dynamic state based on probability threshold). The system monitors accident probability as a varying parameter and adjusts MSISDN allocation status accordingly, allowing the same MSISDN to be shared among multiple vehicles at different times based on their risk profiles
3Reliability
If MSISDN is allocated to all vehicles, then emergency service coverage is improved, but cost aggregation deteriorates due to large number of vehicles
Solution Approach 1:
The patent applies local quality by providing MSISDN allocation selectively to specific vehicles based on their individual accident risk profiles rather than universally to all vehicles. The system assesses each vehicle's local conditions (speed, location, weather, traffic) and allocates MSISDN only to those currently at high risk, thereby reducing aggregated costs while maintaining coverage where needed
Solution Approach 2:
The system uses parameter changes in accident probability assessment to determine allocation decisions. When a vehicle's risk parameters exceed thresholds, MSISDN is allocated; when parameters return to normal ranges, allocation is revoked, creating a cost-effective coverage model
Data Source
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AI summary
Methods and devices enable communication via a wireless network with moving vehicles, depending on the likelihood or presence of an emergency situation. The communication may be enabled also when an Internet connection is present.