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Method and network elements for content duplication in packet networks

A content and telecommunications network technology, applied in the field of packet replication, can solve the problem that the monitoring center cannot flexibly provide advanced interception data

Inactive Publication Date: 2010-05-26
SIEMENS AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Disadvantageously, the monitoring center cannot be flexibly provided with advanced interception data and / or appropriate marking of intercepted calls

Method used

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  • Method and network elements for content duplication in packet networks
  • Method and network elements for content duplication in packet networks
  • Method and network elements for content duplication in packet networks

Examples

Experimental program
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Embodiment Construction

[0059] exist figure 1, an exemplary network configuration 100 is shown comprising a user terminal 102 connected to a destination 112 via a first network part 104 , a media gateway (MG) 106 and a second network part 110 . The MG 106 is controlled by a Media Gateway Controller (MGC) 108 according to any (media) gateway control protocol, such as H.248 and Megaco. In the MG 106, the content is replicated in accordance with the present invention and forwarded via the third network portion 114 to the replication destination 116 (shown in dashed lines).

[0060] The MG 106 performs replication of communication content to and from the user terminal 102 under the control of the MGC 108, which in turn may be controlled by some other network entity (not shown). It should be noted that the MGC 108 acts as a Call Control Entity (CCE) and the MG 106 acts as a content replication node with reference to the terminal's communication relationship.

[0061] Existing (media) gateway control pro...

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PUM

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Abstract

In accordance with the invention, there is provided method for duplicating communications content in a telecommunications network, wherein the content is transported in a layered communications protocol comprising at least one protocol layer. The method comprises receiving first data identifying the content to be duplicated, receiving second data identifying a lowest protocol layers to be duplicated, and duplicating the content as identified by said first data including all protocol information of the lowest protocol layer as identified by said second data, further including all higher layer protocol information. An advantage thereof is that, by means of the second data, the protocol depth of the duplication may be influenced. For example, if the content is transported by the protocols RTP(real-time protocol), UDP (user datagram protocol), and IP (internet protocol), then by means of the second data the content alone, or the content plus the entire RTP protocol information (of which the content is the payload), or the entire IP traffic associated with the content to be duplicated could be selected for duplication. A preferred application of the duplication method is lawful interception (LI), wherein the duplicated content and protocol information along with labels and / or parameters, if applicable, is forwarded to a monitoring facility or monitoring center.

Description

technical field [0001] The present invention generally relates to packet replication in telecommunications networks. In particular, the present invention relates to improved methods and improved network elements for supporting advanced lawful interception operations in IP telecommunications networks. Background technique [0002] Lawful Interception (LI) is legally permitted official access to communications, such as phone calls or email messages, of a user under surveillance. In general, LI is a security process by which network operators or service providers provide law enforcement personnel with access to private or organizational communications. Around the world, country-specific laws govern lawful interception procedures. [0003] LI warrants may allow authorities to record the actual content of communications. In order to ensure that observations can be admitted as evidence, for example in court, they must be marked appropriately during the recording process. The t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/26
CPCH04L63/30H04L43/00H04L63/1408H04L12/2602
Inventor P·拉佩
Owner SIEMENS AG