Method and system for legal monitoring of public service in IP multimedia subsystem
A technology for multimedia subsystems and public services, which is applied in the field of legal monitoring of monitoring related information of public services, can solve the problems of inability to monitor public services, cannot monitor public services, etc., and achieve the effect of good implementability and scalability.
Active Publication Date: 2008-03-19
ZTE CORP
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[0019] In the above methods, the SIP messages of (2) and (7) sessions pass through the S-CSCF, and the IRI monitoring of public services can be carried out through the S-CSCF, while the other 5 routing methods, because the SIP messages do not pass through the S-CSCF or The passed S-CSCF is uncertain, which makes it impossible to perform IRI monitoring of public services through the S-CSCF
[0020] From the above analysis, it can be seen that since the IP multimedia subsystem adopts the structure of separation of business and control, and the routing mode of signaling related to public services is relatively flexible, purely according to the protocol formulated by 3GPP, through the core network equipment (P-CSCF and S-CSCF) have been unable to meet the monitoring of public services
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[0065] The following describes in detail a method for implementing legal interception of messages related to IP multimedia subsystem public service interception in this embodiment with reference to the accompanying drawings.
[0066] Figure 1 is a structural diagram of the legal monitoring of the IP multimedia subsystem IRI defined by 3GPP, showing the network elements and connection relationships involved in the legal monitoring of the IRI, including LEMF 11 (Law Enforcement Monitoring Facility, monitoring center monitoring equipment), ADMF 12 ( Administration Function, monitoring management function module), DF2 13 (Delivery Function 2, delivery function module), P-CSCF / S-CSCF 14 (Proxy CSCF / Serving CSCF, proxy CSCF / serving CSCF). LEMF sends a monitoring request to ADMF through the HI1 interface. ADMF controls DF2 and P-CSCF / S-CSCF through the internal interfaces of X1-1 and X1-2 respectively. When monitoring is activated, the P-CSCF / S-CSCF will monitor the information It is sen...
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The invention provides a method and system for legally snooping common business of PSI mark by introducing snooping module into an application server AS in an IP multimedia sub-system. A snooping management function module determines the application server to which a common business mark belongs after receiving a common business snooping request transmitted from a snooping center, and transmits the snooping request to the snooping module of the application server. The snooping module starts conversation snooping and returns a confirmation information back to the snooping center through the snooping management function module. The snooping module transmits a message satisfying the snooping condition to the snooping center. The snooping center transmits a cancel request to the snooping module through the snooping management function module when an administrator cancels the snooping of an appointed business, and feeds a confirmation message to the snooping center through the snooping management function module. The invention can be used for snooping in IP multimedia sub-system under different PSI route mechanisms.
Description
Technical field [0001] The present invention relates to a method and system for legally intercepting services in an IP Multimedia Subsystem (IP Multimedia Subsystem, IMS), in particular to a method for legally intercepting information related to interception of public services represented by a public service identifier in the IP Multimedia Subsystem And its system. Background technique [0002] In order to protect the public interest and national security, the laws of various countries stipulate that telecom operators must be able to provide legal monitoring services. The legal interception service is a regulated service, which means that according to the requirements of the National Law Enforcement Agency (LEA), the telecommunications network has to provide the LEA with the content of communication (CC) and intercept related information (Intercept). Related Information, IRI) capabilities. Communication content CC refers to the actual communication content during the user session...
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IPC IPC(8): H04L12/26H04L12/56H04L12/24H04L29/06
Inventor 郝振武
Owner ZTE CORP