Dynamic CAMEL Gateway for Roamer CSI Provisioning
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Solution Overview
Problem
The existing static provisioning of Customized Applications for Mobile network Enhanced Logic (CAMEL) Subscription Information (CSI) at the Home Location Register (HLR) is costly and inefficient, as it is not scaled according to the number of outbound roaming subscribers, leading to increased licensing costs and bottlenecks.
Innovation Solution
A dynamic CAMEL gateway system that detects the need for CSI provisioning for outbound roamers, generates CSI based on their International Mobile Subscriber Identity (IMSI), and provisions it to appropriate nodes within the Visited Public Mobile Network (VPMN) or Home Public Mobile Network (HPMN), reducing the load on the HLR and optimizing CSI storage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If static provisioning of CSI is implemented at the HLR for all subscribers, then call control services for outbound roamers are maintained, but licensing costs and operational expenses increase significantly
Solution Approach 1:
The patent implements dynamic provisioning where CSI is generated and stored at the HLR only when a subscriber actually roams outbound, rather than pre-provisioning for all subscribers. The system dynamically creates CSI records based on real-time roaming detection, thereby reducing the quantity of stored CSI while maintaining service reliability for active roamers.
Solution Approach 2:
The HLR automatically detects when a subscriber is outbound roaming and self-generates the necessary CSI records without requiring manual provisioning or pre-configuration. This self-service mechanism ensures that CSI is available when needed while minimizing unnecessary storage and licensing costs for non-roaming subscribers.
2Reliability
If the HLR provisions CSI for all potential roamers, then service availability is ensured, but the HLR becomes a bottleneck due to storage limits
Solution Approach 1:
The patent transforms the static storage model into a dynamic one where CSI records are created on-demand based on actual roaming events. This dynamic approach prevents the HLR from becoming a bottleneck by ensuring that storage capacity is utilized only when necessary, thereby maintaining service availability while preserving processing capacity.
3Adaptability or versatility
If static CSI provisioning is implemented, then service coverage is comprehensive, but operational costs increase due to licensing fees
Solution Approach 1:
The HLR implements self-service provisioning by automatically generating CSI records only when a subscriber is detected to be outbound roaming. This eliminates the need for comprehensive pre-provisioning while maintaining service coverage for all potential roamers, thereby reducing licensing fees and storage costs without compromising adaptability.
4Quantity of substance
If the number of CSI provisions is reduced at the HLR, then costs are lowered, but service quality for outbound roamers may be affected
Solution Approach 1:
The patent ensures service quality is maintained by dynamically generating CSI records at the moment a subscriber becomes an outbound roamer. This real-time generation ensures that the necessary service information is available when needed, preventing any degradation in service quality while minimizing the total number of CSI provisions stored at the HLR.
Solution Approach 2:
The system performs preliminary detection of outbound roaming status and proactively generates CSI records before any service disruption can occur. This preliminary action ensures that service quality is maintained by having the necessary provisioning in place before it is actually required.
Data Source
AI summary
The present invention provides a system and method for providing Customized Applications for Mobile network Enhanced Logic (CAMEL) Subscription Information (CSI) of an outbound roamer of a Home Public Mobile Network (HPMN) such that the outbound roamer is roaming in a Visited Public Mobile Network (VPMN). The system comprises a roamers database storing an outbound roamer record of at least one outbound roamer, wherein the outbound roamer record comprises at least the International Mobile Subscriber Identity (IMSI) of the outbound roamer. The system further comprises a detection block to detect whether provisioning of the CSI is required for the outbound roamer and a CSI generation block to generate the CSI of the outbound roamer based on at least the IMSI of the outbound roamer, if the provisioning of the CSI is required. The system further comprises a provisioning block to provision the generated CSI of the outbound roamer to at least one CSI storing node.