CN102487521B - Media content monitor method and device in IP Multimedia System - Google Patents

Media content monitor method and device in IP Multimedia System Download PDF

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Publication number
CN102487521B
CN102487521B CN201010571488.5A CN201010571488A CN102487521B CN 102487521 B CN102487521 B CN 102487521B CN 201010571488 A CN201010571488 A CN 201010571488A CN 102487521 B CN102487521 B CN 102487521B
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China
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described
ims
ibcf
monitored object
gateway
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CN201010571488.5A
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Chinese (zh)
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CN102487521A (en
Inventor
周蓝粢
高扬
梁文娟
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中兴通讯股份有限公司
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00Network arrangements or protocols for real-time communications
    • H04L65/10Signalling, control or architecture
    • H04L65/1013Network architectures, gateways, control or user entities
    • H04L65/1016IMS
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L63/00Network architectures or network communication protocols for network security
    • H04L63/30Network architectures or network communication protocols for network security for supporting lawful interception, monitoring or retaining of communications or communication related information
    • H04L63/306Network architectures or network communication protocols for network security for supporting lawful interception, monitoring or retaining of communications or communication related information intercepting packet switched data communications, e.g. Web, Internet or IMS communications

Abstract

The invention discloses media content monitor method in a kind of IP Multimedia System, IP Multimedia System IMS accesses gateway/Interconnected Border control functional entity IBCF by IMS and is connected with bearing bed network; Described method includes: after described IMS receives the request of the monitoring to monitored object, monitored object information is sent to IMS and accesses gateway/boundary control functional entity IBCF; When described IMS access gateway/IBCF confirms to be currently accessed user for monitored object, the Content of Communication CC of the session of monitored object is reported data-transformation facility 3DF3. The present invention discloses media content monitoring device in a kind of IP Multimedia System. Existing IMS network need not be carried out bigger change and can realize session is monitored by the present invention, and, access gateway/IBCF, compatible various bearing bed networks owing to being provided with IMS.

Description

Media content monitor method and device in IP Multimedia System

Technical field

The present invention relates to the monitoring technique in IP Multimedia System (IMS, the IPMultimediaSubsystem) network architecture, particularly relate to media content monitor method and device in a kind of IP Multimedia System.

Background technology

Internet protocol multimedia subsystem (IMS, IPMultimediaSubsystem) is the developing direction of Future Multimedia communication, is also the of paramount importance ingredient of next generation network. It is third generation partner program (3GPP, the subsystem of the support IP multimedia service ThirdGenerationPartnershipProject) proposed, it is noteworthy characterized by and have employed session initiation protocol (SIP, SessionInitialProtocol) system, communicate unrelated with access way, can possess multiple multimedia service control function separate with bearing capacity, call separate with session, apply separate with service, business separates with network, and the multi abilities such as mobile network and internet service fusion.

Just because of communication technology is from strength to strength, the deeply various aspects of society and life, utilize mechanics of communication to be engaged in the situation of illegal activity also day by day serious. Lawful Interception technology becomes security department of various countries and cracks down on crime strong weapon. Lawful Interception refers to the release mechanism needs for law enforcement, arranges and specifically monitor target on communication apparatus, and the dialog events and Content of communciation monitoring target is monitored, and it is requisite function in communication field. The normal structures such as European Telecommunication Standard committee (ETSI, EuropeanTelecommunicationsStandardsInstitute), 3GPP are formulating the relevant criterion of Lawful Interception always. Lawful Interception in IMS network field also form corresponding standard at present, and can instruct concrete enforcement.

Fig. 1 is 3GPP packet switch Lawful Interception configuration diagram, as it is shown in figure 1,3GPP proposes a kind of Lawful Interception standards in IMS packet switch (PS, PacketSwitch) network field. Wherein, monitor based on three below interface:

HI1 interface, deploys to ensure effective monitoring and control of illegal activities management for realization;

HI2 interface, for reporting the Intercept related information (IRI, InterceptRelatedInformation) of monitored destinations traffic;

HI3 interface, for exporting the Content of Communication (CC, CommunicationContent) of monitored target;

By HI1, bearing bed network is deployed to ensure effective monitoring and control of illegal activities respectively, export HI2 interface message to key-course equipment such as call conversation control function entity (CSCF, CallSessionControlFunction), export HI3 Content of Communication to bearing bed network. In figure, X1 to X3 is that IMS and the GSN HI1 that corresponds respectively to connected is interfaced to the interface of HI3 interface.

This standard can be applicable to include law compulsion monitoring unit (LEMF, LawEnforcementMonitoringFacility), management functional entity (ADMF, AdministrationFunction), data-transformation facility 2 (DF2, DeliveryFunction2), data-transformation facility 3 (DF3, DeliveryFunction3) and in the monitoring system of audiomonitor GB grid (GSN, GigabyteSystemNetwork).

LEMF by monitoring request notice to ADMF, carries the information such as eavesdropping target identity in request message by HI1; Monitoring is asked message to be sent to bearing bed network G SN by X1_1 by ADMF, carries the information such as eavesdropping target's identity; In IMS domain, monitoring is asked message to send to proxy call conversation control function entity (P-CSCF by ADMF, ProxyCallSessionControlFunction)/service call session control function entity (S-CSCF, Serving-CallSessionControlFunction); Monitoring is asked message to be sent to DF3 by X1_3 by ADMF, carries the information such as eavesdropping target's identity; During session start to conversation end, in IMS domain, conversation request is when GSN routes to P-CSCF/S-CSCF, and P-CSCF/S-CSCF judges when this user is monitored, and identifies the monitored object of monitoring according to eavesdropping target; IRI in conversation procedure is reported to DF2 by X2 by P-CSCF/S-CSCF; CC in conversation procedure is reported to DF3 by X3 by GSN; DF2 asks according to the monitoring from ADMF, and by HI2, the IRI of reception is reported to LEMF after MF processes; DF3 asks according to the monitoring from ADMF, and by HI3, the CC of reception is reported to LEMF after MF processes.

Nowadays, in actual applications, with IMS for the next generation network of core, bearing bed network specifics enriches, including WLAN (WLAN, WirelessLocalAreaNetworks), LAN (LAN, LocalAreaNetworks) etc. So that the Lawful Interception in IMS network field needs to adapt to all kinds of different bearing bed networks becomes extremely difficult. Require that numerous bearing layer equipments can both realize monitor function simultaneously, also be difficult to realize in reality. A lot of equipment, in existing network, possibly cannot provide monitor function, and monitor function so can be caused unavailable.

Summary of the invention

In view of this, media content monitor method and device in a kind of IP Multimedia System of offer is provided, gateway/Interconnected Border can be accessed by IMS and control the CC that functional entity (IBCF, Interconnectedboundarycontrolfunctionalentity) directly reports the session of monitored object to DF3.

For reaching above-mentioned purpose, the technical scheme is that and be achieved in that:

Media content monitor method in a kind of IP Multimedia System, IP Multimedia System IMS accesses gateway/Interconnected Border control functional entity IBCF by IMS and is connected with bearing bed network; Described method includes:

After described IMS receives the request of the monitoring to monitored object, monitored object information is sent to IMS and accesses gateway/boundary control functional entity IBCF;

When described IMS access gateway/IBCF confirms to be currently accessed user for monitored object, the Content of Communication CC of the session of monitored object is reported DF3.

Preferably, described IMS receive the monitoring to monitored object request after, monitored object information is sent to IMS access gateway/boundary control functional entity IBCF particularly as follows:

After described IMS receives the described ADMF monitoring sent request, the identification information of monitored object is controlled interface (CCCI, Callcontentcontrolinterface) by call contents and is sent to described IMS access gateway/IBCF.

Preferably, the Content of Communication CC of the described session by monitored object report DF3 particularly as follows:

Described IMS accesses gateway/IBCF, by the fixed port of described DF3, CC is sent to described DF3;

Or, when described DF3 is media gateway MGW/MGCF entity MGCF, described IMS accesses the CC receiving port of the gateway/IBCF described DF3 by obtaining from described IMS, and CC is sent to described DF3.

Preferably, described bearing bed network is at least one with lower network: GB grid GSN, WLAN WLAN, local network LAN.

Media content monitoring device in a kind of IP Multimedia System, it is applied to IMS and accesses in gateway/IBCF system being connected with bearing bed network by IMS, described device includes reception unit and the transmitting element of being located in described IMS, is located at described IMS and accesses the confirmation unit in gateway/IBCF and report unit; Wherein,

Receive unit, ask for receiving the monitoring to monitored object;

Transmitting element, accesses gateway/boundary control functional entity IBCF for monitored object information is sent to IMS;

Confirmation unit, when being currently accessed user for monitored object for confirmation, triggers and reports unit;

Report unit, for the CC of the session of monitored object is reported DF3.

Preferably, the identification information of monitored object is sent to described IMS by CCCI and accesses gateway/IBCF by described transmitting element.

Preferably, report unit, by the fixed port of described DF3, CC is sent to described DF3 described in;

Or, when described DF3 is media gateway MGW/MGCF entity MGCF, described in report the CC receiving port of the unit described DF3 by obtaining from described IMS, CC is sent to described DF3.

Preferably, described bearing bed network is at least one with lower network: GSN, WLAN, LAN.

In the present invention, after IMS receives the ADMF monitoring sent request, the relevant informations such as the identification information of monitored object can be informed to IMS and access gateway/IBCF, so, IMS accesses gateway/IBCF and can realize intercepted user is deployed to ensure effective monitoring and control of illegal activities, when determining the user being currently accessed for intercepted user, it will the session CC of this intercepted user is reported DF3, thus realizing the monitoring to intercepted user. By IMS, the relevant information of intercepted user is informed to IMS and access gateway/IBCF, make IMS access gateway/IBCF and possessed the ability of deploying to ensure effective monitoring and control of illegal activities.Existing IMS network need not be carried out bigger change and can realize session is monitored by the present invention, and, access gateway/IBCF, compatible various bearing bed networks owing to being provided with IMS.

Accompanying drawing explanation

Fig. 1 is 3GPP packet switch Lawful Interception configuration diagram;

Fig. 2 is IMS network Lawful Interception configuration diagram of the present invention;

Fig. 3 is the composition structural representation of media content monitoring device in IP Multimedia System of the present invention.

Detailed description of the invention

The basic thought of the present invention is, after IMS receives the ADMF monitoring sent request, the relevant informations such as the identification information of monitored object can be informed to IMS and access gateway/IBCF, so, IMS accesses gateway/IBCF and can realize intercepted user is deployed to ensure effective monitoring and control of illegal activities, when determining the user being currently accessed for intercepted user, it will the session CC of this intercepted user is reported DF3, thus realizing the monitoring to intercepted user.

Fig. 2 is IMS network Lawful Interception configuration diagram of the present invention, as shown in Figure 2, compared with the 3GPP packet switch Lawful Interception framework shown in Fig. 1, in IMS network Lawful Interception framework of the present invention, bearing bed network (GSN, WLAN, LAN etc.) accesses gateway/IBCF and IMS by IMS and connects, further, the applied environment of the present invention is that IMS access gateway/IBCF and IMS does not support that network is deployed to ensure effective monitoring and control of illegal activities. Each network element described further below and information interaction approach between.

LEMF by monitoring request notice to ADMF, carries the information such as eavesdropping target identity in request message by HI1; Monitoring is asked message to be sent to bearing bed network G SN/ by X1_1 by ADMF .../WLAN/LAN, carries the information such as eavesdropping target's identity; Monitoring is asked message to be sent to IMS by X1_3 by ADMF, carries the information such as eavesdropping target's identity; Monitoring is asked message to be sent to DF2 by X1_4 by ADMF, carries the information such as eavesdropping target's identity; Monitoring is asked message to be sent to DF3 by X1_5 by ADMF, carries the information such as eavesdropping target's identity; Session establishment process, conversation request is through GSN/ ... during/WLAN/LAN, GSN/ .../WLAN/LAN judges that this user is monitored, and identifies the monitored object of monitoring according to eavesdropping target, is sent by eavesdropping target's session related information to IMS access gateway/IBCF; IMS accesses gateway/IBCF by bearing bed network G SN/ ... the session information that/WLAN/LAN sends is sent to IMS by adaption function interface (AFI, AdaptationFunctionInterface) after carrying out adaptation; IMS asks according to the monitoring from ADMF, it is judged that this user is monitored, and is accessed by IMS after the session information that gateway/IBCF sends processes, it will the IRI event that words are set up in process reports to DF2 by X2; Meanwhile, IMS asks according to the monitoring from ADMF, it is judged that this user is monitored, it is possible to by X3, the CC in session establishment process is reported to DF3.

In the present invention, after IMS receives the monitoring request of ADMF, the relevant information of intercepted user can be determined by the identification information of the monitored object in the request of monitoring, now, the relevant informations such as the identification information of monitored object will be sent to IMS by CCCI interface and access gateway/IBCF by IMS, and the network to realize IMS access gateway/IBCF is deployed to ensure effective monitoring and control of illegal activities; Certainly, the request of monitoring can also be directly forwarded to IMS by CCCI interface and access gateway/IBCF by IMS, IMS access gateway/IBCF extracts the relevant informations such as the identification information of monitored object from the request of monitoring, thus realizing the network of monitored object is deployed to ensure effective monitoring and control of illegal activities.

So, IMS accesses gateway/IBCF and is receiving bearing bed network G SN/ ... after the session information that/WLAN/LAN sends, according to, the relevant information such as the identification information of monitored object confirm whether the user carrying out session is intercepted user, if so, then the CC of the session of active user is reported DF3.

Concrete, IMS accesses gateway/IBCF and the CC of session is reported DF3, it is divided into two kinds of situations, when DF3 is not MGW/MGCF, it is fixing that IMS access gateway/IBCF and DF3 carries out the port of media negotiation, now, IMS accesses gateway/IBCF and determines when active user is monitored object, it is possible to by the CC of session, the CC of current sessions is reported DF3 either directly through the fixed port of DF3. When DF3 is WMG (MGW, MediaGateWay)/MGCF entity (MGCF, MediaGateWayControlFunction) time, MGW/MGCF is IP and the port of dynamically distribution in media consultation process, therefore, IMS accesses gateway/IBCF and has no ability to obtain the IP and port that dynamically distribute with MGW/MGCF media negotiation, and just cannot report CC. Now, if CC being reported to DF3 by X3 by IMS, can there is media detour problem, namely first need to be accessed gateway/IBCF by IMS and CC is sent to DF3 to IMS, IMS by CC transmission again. And media negotiation be end-to-end between media negotiation, not through IMS, simply Session Description Protocol (SDP, SessionDescriptionProtocol) is through IMS; If IMS need to report CC, it is necessary to media are uploaded to IMS, namely IMS accesses gateway/IBCF and media communication content must be also sent to IMS, and each user in such session must flow through IMS just can carry out media negotiation, namely causes media roundabout; The present invention can adopt IMS and DF3 (MGW/MGCF) to carry out media negotiation IP and port, media negotiation well after, the IP after media negotiation and port are notified that IMS accesses gateway/IBCF by IMS. So, IMS accesses gateway/IBCF and just directly CC can be reported to DF3.

Fig. 3 is the composition structural representation of media content monitoring device in IP Multimedia System of the present invention, as shown in Figure 3, in IP Multimedia System of the present invention, media content monitoring device is applied to IMS and accesses in gateway/IBCF system being connected with bearing bed network by IMS, it is located at the reception unit 30 in described IMS and transmitting element 31, is located at the described IMS confirmation unit 32 accessing in gateway/IBCF and reports unit 33; Wherein,

Receive unit 30, ask for receiving the monitoring to monitored object;

Transmitting element 31, accesses gateway/boundary control functional entity IBCF for monitored object information is sent to IMS;

Confirmation unit 32, when being currently accessed user for monitored object for confirmation, triggers and reports unit 33;

Report unit 33, for the CC of the session of monitored object is reported DF3.

The identification information of monitored object is sent to described IMS by CCCI and accesses gateway/IBCF by above-mentioned transmitting element 31.

Above-mentioned report unit 33, by the fixed port of described DF3, CC is sent to described DF3;

Or, when DF3 is MGW/MGCF, report the CC receiving port of the unit 33 described DF3 by obtaining from described IMS, CC be sent to described DF3.

Above-mentioned bearing bed network is at least one with lower network: GSN, WLAN, LAN.

Skilled artisan would appreciate that, in IP Multimedia System shown in Fig. 3 of the present invention, media content monitoring device designs for realizing media content monitor method in aforesaid IP Multimedia System, and the function that realizes of above-mentioned each processing unit/process subelement/processing module can refer to the associated description of media content monitor method in aforementioned IP Multimedia System and understands.The function of each processing unit in figure can be realized by the program that runs on processor, it is possible to is realized by concrete logic circuit.

The above, be only presently preferred embodiments of the present invention, is not intended to limit protection scope of the present invention.

Claims (6)

1. media content monitor method in an IP Multimedia System, it is characterised in that IP Multimedia System IMS accesses gateway/Interconnected Border control functional entity IBCF by IMS and is connected with bearing bed network, and described method includes:
After described IMS receives the request of the monitoring to monitored object, monitored object information is sent to described IMS and accesses gateway/IBCF;
When described IMS access gateway/IBCF confirms to be currently accessed user for monitored object, the Content of Communication CC of the session of monitored object is reported data-transformation facility 3DF3;
Wherein, described IMS receive the monitoring to monitored object request after, monitored object information is sent to described IMS access gateway/IBCF particularly as follows:
After the monitoring request that described IMS receiving management function entity A DMF sends, the identification information of monitored object is controlled interface CCCI by call contents and is sent to described IMS access gateway/IBCF.
2. method according to claim 1, it is characterised in that the Content of Communication CC of the described session by monitored object report DF3 particularly as follows:
Described IMS accesses gateway/IBCF, by the fixed port of described DF3, CC is sent to described DF3;
Or, when described DF3 is media gateway MGW/MGCF entity MGCF, described IMS accesses the CC receiving port of the gateway/IBCF described DF3 by obtaining from described IMS, and CC is sent to described DF3.
3. the method according to any one of claim 1 to 2, it is characterised in that described bearing bed network is at least one with lower network: GB grid GSN, WLAN WLAN, local network LAN.
4. media content monitoring device in an IP Multimedia System, it is characterized in that, it is applied to IP Multimedia System IMS and accesses in gateway/Interconnected Border control functional entity IBCF system being connected with bearing bed network by IMS, described device includes reception unit and the transmitting element of being located in described IMS, is located at described IMS and accesses the confirmation unit in gateway/IBCF and report unit; Wherein,
Receive unit, ask for receiving the monitoring to monitored object;
Transmitting element, accesses gateway/IBCF for monitored object information is sent to described IMS;
Confirmation unit, when being currently accessed user for monitored object for confirmation, triggers and reports unit;
Report unit, for the Content of Communication CC of the session of monitored object is reported data-transformation facility 3DF3;
Wherein, described transmitting element, after being additionally operable to the receiving management function entity A DMF monitoring sent request, the identification information of monitored object is controlled interface CCCI by call contents and is sent to described IMS access gateway/IBCF.
5. device according to claim 4, it is characterised in that described in report unit, by the fixed port of described DF3, CC is sent to described DF3;
Or, when described DF3 is media gateway MGW/MGCF entity MGCF, described in report the CC receiving port of the unit described DF3 by obtaining from described IMS, CC is sent to described DF3.
6. the device according to any one of claim 4 to 5, it is characterised in that described bearing bed network is at least one with lower network: GB grid GSN, WLAN WLAN, LAN LAN.
CN201010571488.5A 2010-12-03 2010-12-03 Media content monitor method and device in IP Multimedia System CN102487521B (en)

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CN201010571488.5A CN102487521B (en) 2010-12-03 2010-12-03 Media content monitor method and device in IP Multimedia System
PCT/CN2011/075610 WO2012071875A1 (en) 2010-12-03 2011-06-10 Media content monitoring method and device in ip multimedia subsystem

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CN101562810A (en) * 2009-05-13 2009-10-21 中兴通讯股份有限公司 Method and system for legally monitoring IP multimedia subsystem network
CN101583129A (en) * 2009-06-12 2009-11-18 中兴通讯股份有限公司 Legal interception system and method in IP multi-media subsystem network

Family Cites Families (1)

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Publication number Priority date Publication date Assignee Title
CN100512161C (en) * 2006-07-18 2009-07-08 华为技术有限公司 Method for transmitting legal monitoring information

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101420432A (en) * 2008-12-01 2009-04-29 华为技术有限公司 Implementing method, system and apparatus for IMS listening
CN101562810A (en) * 2009-05-13 2009-10-21 中兴通讯股份有限公司 Method and system for legally monitoring IP multimedia subsystem network
CN101583129A (en) * 2009-06-12 2009-11-18 中兴通讯股份有限公司 Legal interception system and method in IP multi-media subsystem network

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