Unlock instant, AI-driven research and patent intelligence for your innovation.

Legal monitor method for IMS network

A technology of lawful interception and lawful interception gateway, applied in the field of lawful interception, can solve the problems of implementation difficulty of lawful interception in IMS domain, inability to realize interception function, unable to provide interception function, etc., and achieve the effect of facilitating security and maintaining security.

Inactive Publication Date: 2012-01-11
宋同霞
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So many and complex interception scenarios make the implementation of legal interception in the IMS domain very difficult, requiring so many types and manufacturers of equipment to support the interception function, it is difficult to achieve in reality
Many devices, especially those that are already on the network, may not be able to provide the monitoring function due to the inability to provide the monitoring function

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Legal monitor method for IMS network
  • Legal monitor method for IMS network
  • Legal monitor method for IMS network

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0024] The specific implementation manners of the present invention will be described in detail below with reference to the accompanying drawings.

[0025] In the IMS network, all communication activities of users will be controlled by P-CSCF / S-CSCF, and SIP is used for control signaling. The Proxy Call Session Control Function (P-CSCF) is the first contact point of the user in the IMS system. All SIP signaling flows, whether from or to the UE, must pass through the P-CSCF. The P-CSCF is responsible for validating the request, forwarding it to the specified target, and processing and forwarding the response. In addition, P-CSCF can also serve as a User Agent (UA). The Serving CSCF (S-CSCF) is the core of the IMS. It is located in the home network and performs session control and registration services for the UE. When the UE is in the session, the S-CSCF maintains the session state, and interacts with the service platform and charging functions according to the service suppo...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The provided legal monitor method for IMS network comprises: S502, according to monitor condition, calling the dialogue control function entity to trigger monitor and initiate calling to the legal monitor gateway; S504, the legal monitor gateway applies and allocates the calling agent port and called agent port, and returns the SDP message both of calling and called ports to the dialogue control function entity; S506, the latter sends invitation message to the next jump mesh element and returns message to the calling; then, sends media message both of the calling and called to the legal monitor gateway, wherein, the calling SDP message port replaced by the calling agent in the invitation message, and the called SDP message port replaced by the called agent port in the feedback message; and S508, the legal monitor gateway copies the media message both of the calling an called, and distributes to one or more legal monitor centers.

Description

technical field [0001] The present invention relates to the communication field, and more specifically relates to a lawful interception method for an IMS network. Background technique [0002] Communication technology is now being widely used in all aspects of society and life, and the use of communication technology to engage in criminal and terrorist activities is also becoming more and more serious. The state should have the ability to obtain the content of communications through lawful interception, and should be able to obtain the source and whereabouts of the specific content obtained. Lawful Interception technology (Lawful Interception) is a powerful weapon for national security departments to fight various illegal and criminal activities. [0003] IMS communication technology is the development direction of communication in the future, and the research on IMS lawful interception has become an important issue in security. Different from the previous circuit domain c...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H04W24/00H04M3/22H04L12/66H04L29/06H04W12/02
Inventor 孟昱宋金东熊钢
Owner 宋同霞