Intercept Mediation Unit Service Identification

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Solution Overview

Problem

Existing Lawful Interception systems require time-consuming post-processing of intercepted data to extract content of interest, which is inefficient and cumbersome for Law Enforcement Agencies (LEAs).

Innovation Solution

Implementing a method within the Intercept Mediation and Delivery Unit to classify and mark IP packets with service identifiers, allowing for real-time forwarding of relevant payload data to LEAs, thereby eliminating the need for extensive post-processing.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Quantity of substance

If all IP streams related to a given target are intercepted and delivered as a whole session data flow, then complete communication content is captured, but time-consuming post-processing is required to extract specific content of interest

Engineering Contradiction:
Improvecomplete communication contentVSAvoidpost-processing time
Core Design Contradiction:
Quantity of substanceVSLoss of time

Solution Approach 1:

The patent applies preliminary action by classifying and marking IP packets with service identifiers before delivery to the Law Enforcement Agency. The Intercept Mediation and Delivery Unit performs service identification and marking in advance, so that when the LEA receives the data, the content of interest is already organized and easily accessible, eliminating the need for time-consuming post-processing to extract specific services from the complete communication content.

Inventive Principle:
Principle #10Preliminary action

2Productivity

If service classification and marking is implemented in the Intercept Mediation and Delivery Unit, then real-time analysis is enabled, but device complexity increases

Engineering Contradiction:
Improvereal-time processing efficiencyVSAvoidclassification system complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The patent uses an intermediary approach by introducing service identifiers as a marking mechanism in the Intercept Mediation and Delivery Unit. This intermediary layer adds minimal complexity by simply tagging packets with service identification information, enabling real-time analysis without requiring complex classification algorithms or significant system restructuring. The service identifiers act as a simple yet effective mediator between the intercepted data and the LEA's analysis tools.

Inventive Principle:
Principle #24Intermediary (Mediator)

Data Source

PatentEP2792182B1Classification of intercepted internet payload
Publication Date: 2018.09.26 TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
  • EP2792182B1 patent drawingFigure 1
  • EP2792182B1 patent drawingFigure 2
  • EP2792182B1 patent drawingFigure 3

AI summary

The present disclosure provides embodiments of a method, an arrangement and an entity adapted to provide a Law Enforcement Agency with payload data of an intercepted Internet Protocol flow. The payload data belongs to one or more target identities using a specific Internet service. An Mediation functionality MF3 comprises a receiver configured to receive from an Intercepting Control Element intercepted payload data belonging to one or more target identities using a specific Internet service. The mediation functionality MF3 further comprises classifying means for classifying the payload data by identifying the specific IP service to which the received payload data belongs, and marking means configured to mark each IP packet of the received payload data with a service identifier corresponding to classification of the specific IP service to which the received payload data belongs. The marked payload data offers real-time usage and analysis of the content of interest.