Lawful Interception Integration Using a Centralized Data Layer
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Solution Overview
Problem
Current regulatory requirements for lawful interception in converge telephony application servers (CTAS) with multiple nodes lead to cumbersome data determination and configuration errors.
Innovation Solution
Integration of a lawful interception management (LIM) server with a centralized data layer (CDL) server, utilizing REST over HTTPS for transmission and FTP for reception of communication requests, to facilitate efficient data provisioning and reception from user devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple CTAS nodes are deployed in a super core to provide lawful interception data, then the system capacity and coverage are improved, but the determination of LI critical data becomes cumbersome and error-prone
Solution Approach 1:
The patent introduces a centralized data layer (CDL) server as an intermediary between multiple CTAS nodes and the lawful interception management server. The CDL server consolidates and manages all LI critical data from multiple CTAS nodes, eliminating the need for each node to independently determine and manage interception data. This mediator approach resolves the contradiction by maintaining high system capacity through multiple nodes while simplifying data determination through centralized management.
2Productivity
If multiple CTAS nodes are deployed to enhance system capacity, then more users can be served, but configuration mistakes and errors increase
Solution Approach 1:
The patent merges the data management functions of multiple CTAS nodes into a single centralized data layer server. Instead of each node maintaining separate configuration data, all LI critical data is consolidated in the CDL server, which then distributes it to the appropriate nodes. This merging approach maintains user service capacity through multiple nodes while improving configuration accuracy through centralized, consistent data management.
3Reliability
If a centralized data layer server is introduced to manage LI data, then configuration errors are reduced, but system complexity increases
Solution Approach 1:
The centralized data layer server is designed with multi-functionality, serving as a universal interface for multiple CTAS nodes to access LI critical data. It handles data consolidation, processing, distribution, and management in a single platform, reducing the need for separate management systems at each node. This universal approach improves configuration accuracy while minimizing the increase in overall system complexity through functional consolidation.
Data Source
AI summary
The present disclosure enables lawful interception management (LIM) server integration with a centralized data layer (CDL) server and a converge telephony application server (CTAS). An X1 provisioning request from the LIM server is entertained at the CDL server and the LIM server determines details of the CDL server for target provisioning using an X1 interface. Further, an X2 interface is used by the CTAS to send data to the LIM server. If target is provisioned for interception, the CDL server will transfer X2 records towards LIM server, otherwise the CDL server will discard the data.