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Methods and nodes in lawful interception system

A lawful interception and node technology, which is applied in the field of LI systems and can solve problems such as the impact of the core network

Active Publication Date: 2019-12-03
TELEFON AB LM ERICSSON (PUBL)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] Both cases lead to a huge impact on the existing core network

Method used

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  • Methods and nodes in lawful interception system
  • Methods and nodes in lawful interception system
  • Methods and nodes in lawful interception system

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Embodiment Construction

[0031]In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular circuits, circuit components, techniques, etc., in order to provide a thorough understanding of the present technology for addressing at least one of the stated problems. It will be apparent, however, to one skilled in the art that the present techniques for solving the problems may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known methods, devices, and circuits are omitted so as not to obscure the description of the technology with unnecessary detail.

[0032] figure 1 The communication system and LI core network 100 are shown, where MC 180 is served by CS network 110 .

[0033] The system and network 100 includes a number of entities. An exemplary LI system includes a monitoring center MC 180 . The MC preferably involves a Law Enforcement Management Function (...

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Abstract

The present disclosure relates to the problem to deliver correlation information, CN, in case of CC delivery in TDM format to a Monitoring Centers, MC in a circuit switched network and achieving a minimal impact to MCs and / or no impact on the operator network at all. Said problem is solved by using the extension field of calling or called party number for providing the correlation number to a MC from a Mediation Function entity.

Description

technical field [0001] The present technology relates to methods and nodes in a LI system for enabling the transmission of correlation numbers via HI2 and HI3. Background technique [0002] Currently, network operators are increasingly implementing new technologies based on the IP Multimedia Subsystem (IMS) for Voice over IP (VoIP), eg Voice over LTE (VoLTE). [0003] From a lawful interception point of view, this means that new mechanisms based on new standards have to be implemented for communication content (CC) packet delivery of calls that enable interception to a monitoring center (MC). [0004] Because Circuit Switched (CS) MCs are not capable of listening to voice over Packet Switched (PS) networks (eg, VoIP over IMS), Law Enforcement Agencies (LEAs) must then update the MCs to support new delivery methods based on new standards . [0005] figure 1 The communication system and LI core network 100 are shown with the MC 180 being served by the CS network 110. [00...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/06
CPCH04L65/1016H04L63/306H04L65/1083H04L65/103H04W80/10H04L65/1104
Inventor L.欧拉博纳P.桑特罗A.萨纳特莱E.维尔拉尼
Owner TELEFON AB LM ERICSSON (PUBL)