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Lawful Interception for 2g/3g Devices Interworking with Evolved Packet Systems

A lawful interception and grouping system technology, applied in transmission systems, automatic switching offices, network traffic/resource management, etc., can solve problems affecting the performance of nodes involved in lawful interception

Active Publication Date: 2016-05-11
TELEFON AB LM ERICSSON (PUBL)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This situation produces multiple instances of interception artifacts to the same target subscriber, which can negatively affect the performance of nodes involved in lawful interception, both in terms of bandwidth and in terms of resource usage in general, both for operators and law enforcement agencies. performance

Method used

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  • Lawful Interception for 2g/3g Devices Interworking with Evolved Packet Systems
  • Lawful Interception for 2g/3g Devices Interworking with Evolved Packet Systems
  • Lawful Interception for 2g/3g Devices Interworking with Evolved Packet Systems

Examples

Experimental program
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Embodiment Construction

[0026] figure 1 The evolved packet system architecture in the non-roaming scenario is shown in . The architecture includes target mobile station or user equipment (UE) 1, enhanced UTRAN (E-UTRAN) 110, universal terrestrial radio access network (UTRAN) 120 and GSMEDGE radio access network (GERAN) 130, serving GPRS support node ( SGSN) 3, Mobility Management Entity (MME) 140, Home Subscriber Server (HSS) 150, Serving Gateway (S-GW) 4, Packet Data Network (PDN) Gateway 5, Policy Charging Rules Function (PCRF) 170 and Operation Provider's IP server 180.

[0027] figure 1 Some of the nodes shown in can operate as Intercept Control elements of a Lawful Interception system, in particular Serving GPRS Support Node 3, Serving Gateway 4 and Packet Data Network Gateway 5.

[0028] The Serving GPRS Support Node 3 is responsible for the delivery of data packets to and from mobile stations within its geographical service area. Lawful Interception may be required in the Serving GPRS Supp...

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Abstract

A method for reducing consumption of resources for lawful interception or retention of data related to a 2G / 3G target mobile station connected to a telecommunication network interworking with an evolved packet system Traffic related, said method comprising the steps of: at a first node, detecting at least a parameter value in data for which lawful interception or data retention has been activated; based on said at least parameter value, evaluating whether said traffic is in the same network The second node through which the traffic passes is intercepted or retained; if the second node is located downstream of the first node, the lawful intercept request or intercepted data is filtered out.

Description

technical field [0001] The present invention relates to methods and arrangements in a telecommunication system for providing intercept or withhold data to lawful intercept requesting entities, in particular in the case of 2G / 3G networks interworking with evolved packet systems. Background technique [0002] In many countries, telecommunications operators and Internet service providers are currently obliged by law to provide law enforcement agencies (LEAs) with stored traffic data generated from public telecommunications for the purposes of detection, investigation and prosecution of crimes and criminal offences. [0003] One system for accessing communication-related data is known as a Lawful Interception (LI) system. The standard architecture includes an Intercept Control Element (ICE), which provides access to the telecommunications network to the user equipment of the target user. The Interception Control Element may be eg a 3G Mobile Services Switching Center (MSC) Serv...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/06H04W12/02H04L47/32
CPCH04L63/304H04M3/2281H04W12/80H04L63/00H04L63/30H04L47/32H04W28/10
Inventor M·伊奥维诺R·德桑蒂斯
Owner TELEFON AB LM ERICSSON (PUBL)