Lawful Interception Deduplication in 2G/3G to EPS Interworking
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In telecommunications systems, the interworking of 2G/3G networks with Evolved Packet Systems leads to multiple instances of interception requests and data, causing resource inefficiencies and performance issues for both operators and Law Enforcement Agencies during lawful interception.
Innovation Solution
A method and system that detect and filter out redundant interception requests and data by determining if lawful interception has already been performed at another node in the same network, thereby skipping unnecessary interception and discarding duplicate data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If 2G/3G networks interwork with Evolved Packet System, then network functionality and service capability are improved, but multiple instances of interception requests and data are generated causing resource inefficiency
Solution Approach 1:
The patent merges multiple interception requests for the same target subscriber into a single interception instance by implementing deduplication mechanisms at the intercepting control element level, where duplicate requests are detected and consolidated to avoid redundant resource consumption
Solution Approach 2:
The patent changes the parameter of interception request handling by introducing unique identifiers and correlation parameters that enable the system to recognize and differentiate between duplicate and unique interception requests, allowing efficient filtering of redundant data
2Reliability
If interception is performed at multiple nodes for the same target subscriber, then comprehensive data collection is achieved, but bandwidth and resource usage increase
Solution Approach 1:
The patent extracts and removes duplicate interception data at the intercepting control element level before forwarding to law enforcement monitoring facilities, keeping only unique interception instances while discarding redundant copies, thereby reducing bandwidth consumption without compromising data completeness
3Ease of operation
If each intercepting control element performs independent interception, then interception autonomy is maintained, but redundant intercept products are generated
Solution Approach 1:
The patent implements feedback mechanisms where intercepting control elements exchange information about active interception targets and requests, allowing each node to maintain operational autonomy while receiving feedback that enables it to identify and eliminate redundant interception instances through coordinated deduplication
Data Source
AI summary
A method, system, and a computer program product for reducing consumption of resources for lawful interception or retention data related to traffic concerning a 2G/3G target mobile connected to a telecommunications network interworking with Evolved Packet System is provided. A first parameter value in traffic for which lawful interception or data retention has been activated is detected at a first node. Based on at least the first parameter value, whether the traffic will be intercepted or retained at a second node crossed by the traffic is evaluated. If the second node will intercept or retain the traffic, the first node foregoes a lawful interception request or retention of intercepted data.