Third-Party Notification Engine for Lawful Interception
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Solution Overview
Problem
Current lawful interception management systems (LIMS) used by mobile network operators (MNOs) do not notify law enforcement agencies (LEAs) of updates to user equipment (UE) identifiers and SIM switches, leading to a monitoring gap in lawful interception.
Innovation Solution
A third-party notification engine is introduced to enhance LIMS functionality, which generates notifications in the form of S-records to notify LEAs of updates to UE identifiers and SIM switches, ensuring near real-time notification of changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If LIMS does not notify LEAs of UE identifier updates, then system complexity is reduced, but information loss occurs leading to monitoring gaps
Solution Approach 1:
A third-party notification engine is introduced as an intermediary component between LIMS and LEAs. This engine specifically handles the generation and transmission of notifications when UE identifiers change, allowing LIMS to maintain its core functionality while adding the notification capability through a dedicated intermediate component rather than complicating the entire system.
2Loss of information
If LIMS notifies LEAs of all UE identifier updates, then information completeness is improved, but loss of time increases due to notification processing
Solution Approach 1:
The notification engine is pre-configured with templates and protocols for notifying LEAs. When a UE identifier change is detected, the notification is generated and transmitted immediately using pre-established procedures, eliminating delays associated with real-time decision-making and processing during the actual interception operation.
3Reliability
If third-party notification engine is added to LIMS, then reliability of lawful interception is improved, but device complexity increases
Solution Approach 1:
The system is segmented into distinct functional modules: the core LIMS handling interception operations and a separate third-party notification engine handling communications with LEAs. This segmentation allows each component to be optimized independently, maintaining reliability through specialized functions while managing complexity through modular separation rather than monolithic system design.
Data Source
AI summary
Systems and methods are provided for notifying third-party servers, such as law enforcement agency servers, of updates to wireless user equipment identifiers. The method includes receiving a replacement wireless user equipment identifier to replace a current wireless UE identifier. It is determined that a third-party server (law enforcement agency) information request is associated with the current wireless UE identifier (such as an IMEI or PEI). Responsive to determining there is an information request from a third-party server associated with the current wireless UE identifier, notification of the replacement wireless user equipment identifier is generated and transmitted to the third-party server.