CN1870683A - Method for implementing legal monitoring - Google Patents
Method for implementing legal monitoring Download PDFInfo
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- CN1870683A CN1870683A CN 200510123781 CN200510123781A CN1870683A CN 1870683 A CN1870683 A CN 1870683A CN 200510123781 CN200510123781 CN 200510123781 CN 200510123781 A CN200510123781 A CN 200510123781A CN 1870683 A CN1870683 A CN 1870683A
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Abstract
This invention discloses a method for realizing legal monitor including: after a HLR belonging to a target user receives a monitor instruction with a target user ID sent by a monitor system, it judges if the target user is at the activating state at the present based on the target user ID carried in the monitor instruction, if so, it triggers the monitor system and the media gateway of the target user access network to set up bearing connection, the media gateway uses the set-up bearing connection to send the media flow corresponding to the target user to the monitor system.
Description
Technical field
The present invention relates to monitoring technique, particularly relate to a kind of method that in circuit domain (CS), the user who is in state of activation is realized Lawful Interception.
Background technology
Lawful Interception is meant law enforcement agency (LEA) through corresponding authorities conducting the examination on the ministry's authorization approval, the law enforcement behavior of public correspondence Netcom communication service being monitored according to national relevant law and public correspondence net industry standard.
Fig. 1 is a flow chart of realizing Lawful Interception in the prior art in CS.Referring to figure l, in the time need monitoring a targeted customer's calling procedure, the process that existing techniques in realizing is monitored specifically may further comprise the steps in CS:
Step 101: the monitoring indication that monitoring system will be carried targeted customer's sign is sent to the affiliated attaching position register (HLR) of this targeted customer.
Step 102: this HLR judges the current state of activation that whether is in of targeted customer after receiving and monitoring indication, if, then finish current snoop procedure, otherwise, execution in step 103.
Here, if the targeted customer is just continuing or conversation procedure, then HLR can judge this targeted customer and is in state of activation, if the targeted customer continues or conversation procedure, then HLR can judge this targeted customer and is in idle condition.
Step 103:HLR targeted customer's state is set to listening state.
Step 104: when the targeted customer began to carry out session, the Media Gateway Controller of targeted customer's visited network and monitoring system were carried out the mutual of call signaling, and were connected with the media gateway foundation carrying of targeted customer's visited network by monitoring system.
Step 105: the carrying that the media gateway utilization of targeted customer's visited network is set up connects will be sent to monitoring system corresponding to targeted customer's monitoring content.
From above-mentioned flow process shown in Figure 1 as can be seen, in the prior art, when issuing, the HLR of monitoring system in CS monitor indication when need a targeted customer being set to the eavesdropping target, if judging this targeted customer, HLR is in activated state, be that the targeted customer is when carrying out call proceeding or carrying out conversation procedure, the monitoring indication that monitoring system issued then can not be accepted, the media gateway of the Media Gateway Controller of targeted customer's visited network at the current place of targeted customer and targeted customer's visited network can not set up to carry and be connected with monitoring system among the CS, like this, then can't make monitoring system obtain the current ongoing session content of targeted customer or current continuing is about to the content of the session carried out, therefore, greatly limit the application of legal monitoring business in CS, reduced the QoS of legal monitoring business.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of method that realizes Lawful Interception, realizes Lawful Interception to this targeted customer so that the targeted customer in circuit domain still can this targeted customer when being in state of activation be set to the eavesdropping target.
In order to achieve the above object, technical scheme of the present invention is achieved in that
A kind of method that realizes Lawful Interception, this method comprises:
After attaching position register under the A, targeted customer receives the monitoring indication of carrying targeted customer's sign that monitoring system sends, identify and judge the current state of activation that whether is in of targeted customer according to monitoring the targeted customer who carries in the indication, if, execution in step B then;
Attaching position register under B, the targeted customer triggers monitoring system and is connected with the media gateway foundation carrying of targeted customer's visited network;
The carrying that the media gateway utilization of C, targeted customer's visited network is set up connects will be sent to monitoring system corresponding to targeted customer's Media Stream.
In steps A, described state of activation is call proceeding state or session status.
Described step B comprises:
Attaching position register under the B1, targeted customer obtains the sign of the Media Gateway Controller of targeted customer's visited network, and the sign of the Media Gateway Controller of targeted customer's visited network of being obtained is sent to monitoring system;
The Media Gateway Controller that is sent to targeted customer's visited network is indicated in the monitoring that B2, monitoring system will be carried targeted customer's sign according to the sign of the Media Gateway Controller of the targeted customer's visited network that receives;
The Media Gateway Controller of B3, targeted customer's visited network sends the state request of carrying targeted customer's sign according to the attaching position register of the sign of monitoring the targeted customer who carries in the indication under the targeted customer;
Attaching position register under B4, the targeted customer obtains the current state information of targeted customer according to the sign of the targeted customer in the state request that receives, and the state information of being obtained is carried at the Media Gateway Controller that is sent to targeted customer's visited network in the condition responsive;
The Media Gateway Controller of B5, targeted customer's visited network judges that the state information of obtaining is that deactivation status still is call proceeding state or session status from condition responsive, if deactivation status, then finish current flow process, if call proceeding state, execution in step B6 then, if session status, then direct execution in step B7;
The Media Gateway Controller of B6, targeted customer's visited network is monitored the signalling interactive process of targeted customer place session, after the opposing party in monitoring targeted customer and session finishes call signaling mutual, and execution in step B7;
The Media Gateway Controller of B7, targeted customer's visited network by with monitoring system mutual call signaling obtain bearer related information, and the bearer related information that is obtained is sent to the media gateway of targeted customer's visited network;
The media gateway of B8, targeted customer's visited network utilizes received bearer related information and monitoring system foundation carrying to be connected.
In step B7, the Media Gateway Controller of described targeted customer's visited network comprises by the step that the calling procedure that carries out with monitoring system obtains bearer related information:
The Media Gateway Controller of B711, targeted customer's visited network obtains the H.248 related context and the terminal point information of the session of targeted customer place according to targeted customer's sign, and H.248 related context and the terminal point information of being obtained is carried at the media gateway that is sent to targeted customer's visited network in the monitoring indication;
H.248 related context during the media gateway of B712, targeted customer's visited network is indicated according to received monitoring and terminal point information increase the monitoring end points corresponding to the targeted customer, then snoop responses are sent to the Media Gateway Controller of targeted customer's visited network;
The Media Gateway Controller of B713, targeted customer's visited network sends call request to monitoring system;
B714, monitoring system receive the Media Gateway Controller that bearer related information is sent to after the call request targeted customer's visited network.
Described step B713 further comprises: the information that the Media Gateway Controller of targeted customer's visited network is in session status with the targeted customer is carried at and is sent to monitoring system in the snoop responses.
In step B713, carry the information that the targeted customer is in session status in the described call request.
In step B7, the Media Gateway Controller of described targeted customer's visited network by with monitoring system the mutual call signaling step of obtaining bearer related information comprise:
The Media Gateway Controller of B721, targeted customer's visited network is sent to monitoring system with snoop responses;
After B722, monitoring system receive snoop responses, bearer related information is carried at the Media Gateway Controller that is sent to targeted customer's visited network in the call request;
The Media Gateway Controller of B723, targeted customer's visited network obtains bearer related information from the call request that receives.
After step B723, and before bearer related information is sent to the media gateway of targeted customer's visited network, further comprise:
The Media Gateway Controller of B724, targeted customer's visited network obtains the H.248 related context and the terminal point information of the session of targeted customer place according to targeted customer's sign, and H.248 related context and the terminal point information of being obtained is carried at the media gateway that is sent to targeted customer's visited network in the monitoring indication;
H.248 related context during the media gateway of B725, targeted customer's visited network is indicated according to monitoring and terminal point information increase the monitoring end points corresponding to the targeted customer, and the relevant information with this set monitoring end points is carried at the Media Gateway Controller that is sent to targeted customer's visited network in the snoop responses then.
In step B721, carry the information that the targeted customer is in session status in the described snoop responses.
Attaching position register under the Media Gateway Controller of described targeted customer's visited network and the targeted customer is carried out described mutual process by MAP MAP message;
The media gateway of the Media Gateway Controller of described targeted customer's visited network and targeted customer's visited network is carried out described reciprocal process by medium control protocol message.
This shows, in the present invention, when monitoring system need a targeted customer be set to the eavesdropping target in CS, even this targeted customer is current is state of activation, be that the corresponding targeted customer of call proceeding state is carrying out the corresponding targeted customer of call proceeding process or session status and carrying out conversation procedure, the present invention still can carry out follow-up targeted customer and be set to the eavesdropping target, monitoring system is set up carrying with the media gateway of targeted customer's visited network and is connected, the carrying that the media gateway utilization of targeted customer's visited network is set up connects the process that the Media Stream of targeted customer's current sessions is sent to monitoring system, therefore realized that the targeted customer is set to the process that the eavesdropping target realizes Lawful Interception when the targeted customer is in state of activation, expand the range of application of legal monitoring business in CS greatly, improved the QoS of legal monitoring business.
Description of drawings
Fig. 1 is a flow chart of realizing Lawful Interception in the prior art in CS.
Fig. 2 is the embodiment of the invention 1 realizes Lawful Interception in CS a flow chart.
Fig. 3 is the flow chart that the Media Gateway Controller of targeted customer's visited network in embodiments of the present invention obtains targeted customer's state information.
Fig. 4 is the embodiment of the invention 2 realizes Lawful Interception in CS a flow chart.
Embodiment
Core concept of the present invention is: after the HLR under the targeted customer receives the monitoring indication of carrying targeted customer's sign that monitoring system sends, identify and judge the current state of activation that whether is in of targeted customer according to monitoring the targeted customer who carries in the indication, if then the triggering of the HLR under targeted customer monitoring system is set up to carry with the media gateway of targeted customer's visited network and is connected; The carrying that the media gateway utilization of targeted customer's visited network is set up connects will be sent to monitoring system corresponding to targeted customer's Media Stream.
Wherein, set up carrying when being connected, can initiate to set up the calling of carrying by the Media Gateway Controller of targeted customer's visited network of the media gateway side of monitoring system or targeted customer's visited network in the media gateway of monitoring system and targeted customer's visited network.
For making the purpose, technical solutions and advantages of the present invention clearer, the present invention is described in further detail below in conjunction with drawings and the specific embodiments.
Embodiment 1:
In the present embodiment, initiating to set up the calling of carrying to the Media Gateway Controller of targeted customer's visited network with monitoring system is that example illustrates specific implementation process of the present invention.
Fig. 2 is a flow chart of realizing Lawful Interception in the embodiment of the invention 1 in CS.Referring to Fig. 2, in the present invention, realize that in CS the process of Lawful Interception specifically may further comprise the steps:
Step 201: monitoring system will be monitored indication and be sent to the affiliated HLR of targeted customer.
Here, monitoring system is sent to the sign of carrying the targeted customer in the monitoring indication of HLR under the targeted customer, monitors content information and other relevant monitoring information.Here, described targeted customer's sign can comprise: MSISDN, IMSI, IMEI, SIP URI, TEL URL, NAI.Described monitoring content information can comprise: voice, and/or video, and/or fax, and/or short message etc.Described other relevant monitoring information can be exemplified as the ID of monitoring system etc.
Step 202: the HLR under the targeted customer obtains targeted customer's sign from the monitoring indication that receives, information according to the targeted customer's who is obtained sign and the targeted customer that preserved in self, judge the current state of activation that whether is in of targeted customer, if, then execution in step 203, otherwise, carry out the existing process that realizes Lawful Interception at the targeted customer who is in deactivation status, finish current flow process.
Here, if the current state of activation that is in of targeted customer, i.e. call proceeding state or session status, then corresponding targeted customer is current to carry out the call proceeding process or is carrying out conversation procedure.
Step 203: the HLR under the targeted customer obtains the sign of the Media Gateway Controller of targeted customer's visited network, and the sign of the Media Gateway Controller of targeted customer's visited network of being obtained is sent to monitoring system.
Here, when targeted customer's start-up logging or position when upgrading, owing to can carry out the mutual of signaling between the HLR under the targeted customer and the Media Gateway Controller of targeted customer's visited network, therefore, the sign of the Media Gateway Controller that obtains the targeted customer's visited network described in this step alternately that the HLR under the targeted customer can be by this signaling.
Herein and the Media Gateway Controller of targeted customer's visited network of the following stated can be exemplified as Mobile Switching Center Server (MSC Server).
Step 204: monitoring system will be monitored the Media Gateway Controller that indication is sent to targeted customer's visited network according to the sign of the Media Gateway Controller of the targeted customer's visited network that receives.
Here, monitoring system is sent to the sign of carrying the targeted customer in the monitoring indication of Media Gateway Controller of targeted customer's visited network, monitors content information and other relevant monitoring information.Here, described targeted customer's sign can comprise: MSISDN, IMSI, IMEI, SIP URI, TEL URL, NAI etc.Described monitoring content information can comprise: voice, and/or video, and/or fax, and/or short message etc.Comprise the ID of monitoring system etc. in described other relevant monitoring information.
Step 205: after the Media Gateway Controller of targeted customer's visited network receives and monitors indication, obtain the current state information of targeted customer, judge that according to the state information of being obtained the current deactivation status that is in of targeted customer still is call proceeding state or session status, if deactivation status, then execution in step 206, if the call proceeding state, then direct execution in step 207, if session status, then direct execution in step 208.
Here, the Media Gateway Controller of the targeted customer's visited network process of obtaining targeted customer's current state information can specifically may further comprise the steps referring to shown in Figure 3:
Step 301: the Media Gateway Controller of targeted customer's visited network obtains targeted customer's sign from the monitoring indication that receives.
Step 302: the Media Gateway Controller of targeted customer's visited network is carried at the targeted customer's that obtained sign the HLR that is sent in the state request under this targeted customer.
Step 303: the HLR under the targeted customer obtains the current state information of targeted customer according to the targeted customer's who carries in the state request sign with the targeted customer's who self preserves information.
Here, if the current call proceeding process of just carrying out of targeted customer, then the current state information of the targeted customer that HLR obtained under the targeted customer is the call proceeding state information, if the current conversation procedure that just carrying out of targeted customer, then the current state information of the targeted customer that HLR obtained under the targeted customer is a session state information, do not carry out call proceeding and session if the targeted customer is current, then the current state information of the targeted customer that HLR obtained under the targeted customer is a deactivation status information.
Step 304: the HLR under the targeted customer is carried at the Media Gateway Controller that sends to targeted customer's visited network in the state request response with the targeted customer's that obtained state information.
So far, the Media Gateway Controller of then having finished targeted customer's visited network obtains the process of targeted customer's current state information.
Step 206: the Media Gateway Controller of targeted customer's visited network is carried out the existing processing procedure that is in deactivation status realization Lawful Interception at the targeted customer, finishes current flow process.
Step 207: the Media Gateway Controller of targeted customer's visited network is in monitoring state, finishes call proceeding process realization session until monitoring the targeted customer.
Here, the Media Gateway Controller of targeted customer's visited network is monitored the signalling interactive process of targeted customer place session, the opposing party in monitoring targeted customer and session can know that then the targeted customer has finished the call proceeding process and realized session after finishing call signaling mutual.
Step 208: the Media Gateway Controller of targeted customer's visited network obtains the H.248 related context and the terminal point information of the session of targeted customer place according to targeted customer's sign, and H.248 related context and the terminal point information of being obtained is carried at the media gateway that is sent to targeted customer's visited network in the monitoring indication.
Here, the monitoring that is sent to the media gateway of targeted customer's visited network of the Media Gateway Controller of targeted customer's visited network is designated as H.248 message.
Step 209: the media gateway of targeted customer's visited network increases monitoring end points corresponding to the targeted customer according to the H.248 related context in the received monitoring indication and terminal point information, then the relevant information of this monitoring end points of being increased is sent to the Media Gateway Controller of targeted customer's visited network.
Here, the process that increases corresponding to targeted customer's monitoring end points is a prior art, but but simple example be: first increase will be corresponding to targeted customer's monitoring end points, and the topological attribute of monitoring end points is set to unidirectional.The relevant information of described monitoring end points comprises that this is corresponding to the sign of targeted customer's monitoring end points and should be corresponding to the SDP association attributes of targeted customer's monitoring end points etc.
Step 210: the Media Gateway Controller of targeted customer's visited network sends call request to monitoring system.
Here, the information that the Media Gateway Controller of targeted customer's visited network can further be in the targeted customer session status is sent to monitoring system, this process of transmitting specifically can adopt dual mode to realize, comprising: the information that the targeted customer is in session status is carried at and is sent to monitoring system in the snoop responses; Perhaps, when sending call request, the information that the targeted customer is in session status is carried at and is sent to monitoring system in the call request.
Step 211: monitoring system receives the Media Gateway Controller that bearer related information is sent to after the call request targeted customer's visited network.
Here, described bearer related information can be exemplified as the employed related media SDP information of carrying.
Step 212: the Media Gateway Controller of targeted customer's visited network is sent to the bearer related information that receives the media gateway of targeted customer's visited network.
Here, the Media Gateway Controller of targeted customer's visited network utilizes message H.248 bearer related information to be sent to the media gateway of targeted customer's visited network.
Step 213: the media gateway of targeted customer's visited network is set up carrying according to received bearer related information and monitoring system and is connected.
Step 214: when the media gateway of targeted customer's visited network received Media Stream corresponding to the targeted customer, the carrying that the media gateway utilization of targeted customer's visited network is set up connected the Media Stream that will be somebody's turn to do corresponding to the targeted customer and is sent to monitoring system.
Here, described Media Stream corresponding to the targeted customer can be the Media Stream that the targeted customer sends to the opposing party in this session, also can be the Media Stream that this opposing party in the session sends to the targeted customer.
So far, then realized in CS, being set to the eavesdropping target, realized the process of Lawful Interception at the targeted customer who is in state of activation.
Embodiment 2:
In the present embodiment, initiating to set up the calling of carrying connection to monitoring system with the Media Gateway Controller of targeted customer's visited network is that example illustrates specific implementation process of the present invention.
Fig. 4 is a flow chart of realizing Lawful Interception in the embodiment of the invention 2 in CS.Referring to Fig. 4, in the present invention, realize that in CS the process of Lawful Interception specifically may further comprise the steps:
Step 401～step 407 is all identical with all descriptions of step 201～step 207.
Step 408: the Media Gateway Controller of targeted customer's visited network is sent to monitoring system with snoop responses.
Here, when sending snoop responses, the information that the Media Gateway Controller of targeted customer's visited network can further be in the targeted customer session status is carried at and is sent to monitoring system in the snoop responses, with the current state of notice monitoring system targeted customer.
Step 409: after monitoring system receives snoop responses, bearer related information is carried at the Media Gateway Controller that is sent to targeted customer's visited network in the call request.
Here, described bearer related information can be exemplified as the employed related media SDP information of carrying.
Step 410: after the Media Gateway Controller of targeted customer's visited network receives the call request of carrying bearer related information, obtain the H.248 related context and the terminal point information of the session of targeted customer place according to targeted customer's sign, and H.248 related context and the terminal point information of being obtained is carried at the media gateway that is sent to targeted customer's visited network in the monitoring indication.
Step 411: the media gateway of targeted customer's visited network increases monitoring end points corresponding to the targeted customer according to received H.248 related context and terminal point information, and the relevant information with this monitoring end points of being increased is carried at the Media Gateway Controller that is sent to targeted customer's visited network in the snoop responses then.
Step 412: the Media Gateway Controller of targeted customer's visited network receives that the media gateway of targeted customer's visited network sends carry the snoop responses of monitoring the end points relevant information after, the bearer related information that obtains is sent to the media gateway of targeted customer's visited network from the call request that monitoring system is sent.
Step 413: the media gateway of targeted customer's visited network is set up carrying according to bearer related information that receives and monitoring system and is connected.
Step 414: when the media gateway of targeted customer's visited network received Media Stream corresponding to the targeted customer, the carrying that the media gateway utilization of targeted customer's visited network is set up connected the Media Stream that will be somebody's turn to do corresponding to the targeted customer and is sent to monitoring system.
Here, described Media Stream corresponding to the targeted customer can be the Media Stream that the targeted customer sends to the opposing party in this session, also can be the Media Stream that this opposing party in the session sends to the targeted customer.
In above-mentioned Fig. 2 and process shown in Figure 4, monitoring system sends described each message by the Media Gateway Controller of targeted customer's visited network of X1 interface in CS and the media gateway of targeted customer's visited network, and the Media Gateway Controller of the targeted customer's visited network among the CS and the media gateway of targeted customer's visited network send described each message by X2 interface to monitoring system respectively.
And in the present invention, the HLR under the Media Gateway Controller of described targeted customer's visited network and the targeted customer carries out described each reciprocal process by MAP (MAP) protocol message; The media gateway of the Media Gateway Controller of described targeted customer's visited network and targeted customer's visited network is carried out described each reciprocal process by the medium control protocol such as protocol message H.248.
The method that realizes Lawful Interception in CS proposed by the invention can be applied to also can be applied in CDMA 2000 (CDMA2000) system in Wideband Code Division Multiple Access (WCDMA) (WCDMA) system.
In a word, the above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1, a kind of method that realizes Lawful Interception is characterized in that, this method comprises:
After attaching position register under the A, targeted customer receives the monitoring indication of carrying targeted customer's sign that monitoring system sends, identify and judge the current state of activation that whether is in of targeted customer according to monitoring the targeted customer who carries in the indication, if, execution in step B then;
Attaching position register under B, the targeted customer triggers monitoring system and is connected with the media gateway foundation carrying of targeted customer's visited network;
The carrying that the media gateway utilization of C, targeted customer's visited network is set up connects will be sent to monitoring system corresponding to targeted customer's Media Stream.
2, method according to claim 1 is characterized in that, in steps A, described state of activation is call proceeding state or session status.
3, method according to claim 1 is characterized in that, described step B comprises:
Attaching position register under the B1, targeted customer obtains the sign of the Media Gateway Controller of targeted customer's visited network, and the sign of the Media Gateway Controller of targeted customer's visited network of being obtained is sent to monitoring system;
The Media Gateway Controller that is sent to targeted customer's visited network is indicated in the monitoring that B2, monitoring system will be carried targeted customer's sign according to the sign of the Media Gateway Controller of the targeted customer's visited network that receives;
The Media Gateway Controller of B3, targeted customer's visited network sends the state request of carrying targeted customer's sign according to the attaching position register of the sign of monitoring the targeted customer who carries in the indication under the targeted customer;
Attaching position register under B4, the targeted customer obtains the current state information of targeted customer according to the sign of the targeted customer in the state request that receives, and the state information of being obtained is carried at the Media Gateway Controller that is sent to targeted customer's visited network in the condition responsive;
The Media Gateway Controller of B5, targeted customer's visited network judges that the state information of obtaining is that deactivation status still is call proceeding state or session status from condition responsive, if deactivation status, then finish current flow process, if call proceeding state, execution in step B6 then, if session status, then direct execution in step B7;
The Media Gateway Controller of B6, targeted customer's visited network is monitored the signalling interactive process of targeted customer place session, after the opposing party in monitoring targeted customer and session finishes call signaling mutual, and execution in step B7;
The Media Gateway Controller of B7, targeted customer's visited network by with monitoring system mutual call signaling obtain bearer related information, and the bearer related information that is obtained is sent to the media gateway of targeted customer's visited network;
The media gateway of B8, targeted customer's visited network utilizes received bearer related information and monitoring system foundation carrying to be connected.
4, method according to claim 3 is characterized in that, in step B7, the Media Gateway Controller of described targeted customer's visited network comprises by the step that the calling procedure that carries out with monitoring system obtains bearer related information:
The Media Gateway Controller of B711, targeted customer's visited network obtains the H.248 related context and the terminal point information of the session of targeted customer place according to targeted customer's sign, and H.248 related context and the terminal point information of being obtained is carried at the media gateway that is sent to targeted customer's visited network in the monitoring indication;
H.248 related context during the media gateway of B712, targeted customer's visited network is indicated according to received monitoring and terminal point information increase the monitoring end points corresponding to the targeted customer, then snoop responses are sent to the Media Gateway Controller of targeted customer's visited network;
The Media Gateway Controller of B713, targeted customer's visited network sends call request to monitoring system;
B714, monitoring system receive the Media Gateway Controller that bearer related information is sent to after the call request targeted customer's visited network.
5, method according to claim 4 is characterized in that, described step B713 further comprises: the information that the Media Gateway Controller of targeted customer's visited network is in session status with the targeted customer is carried at and is sent to monitoring system in the snoop responses.
6, method according to claim 4 is characterized in that, in step B713, carries the information that the targeted customer is in session status in the described call request.
7, method according to claim 3 is characterized in that, in step B7, the Media Gateway Controller of described targeted customer's visited network by with monitoring system the mutual call signaling step of obtaining bearer related information comprise:
The Media Gateway Controller of B721, targeted customer's visited network is sent to monitoring system with snoop responses;
After B722, monitoring system receive snoop responses, bearer related information is carried at the Media Gateway Controller that is sent to targeted customer's visited network in the call request;
The Media Gateway Controller of B723, targeted customer's visited network obtains bearer related information from the call request that receives.
8, method according to claim 7 is characterized in that, after step B723, and before bearer related information is sent to the media gateway of targeted customer's visited network, further comprises:
The Media Gateway Controller of B724, targeted customer's visited network obtains the H.248 related context and the terminal point information of the session of targeted customer place according to targeted customer's sign, and H.248 related context and the terminal point information of being obtained is carried at the media gateway that is sent to targeted customer's visited network in the monitoring indication;
H.248 related context during the media gateway of B725, targeted customer's visited network is indicated according to monitoring and terminal point information increase the monitoring end points corresponding to the targeted customer, and the relevant information with this set monitoring end points is carried at the Media Gateway Controller that is sent to targeted customer's visited network in the snoop responses then.
9, method according to claim 7 is characterized in that, in step B721, carries the information that the targeted customer is in session status in the described snoop responses.
10, according to any described method in the claim 3 to 9, it is characterized in that the attaching position register under the Media Gateway Controller of described targeted customer's visited network and the targeted customer is carried out described mutual process by MAP MAP message;
The media gateway of the Media Gateway Controller of described targeted customer's visited network and targeted customer's visited network is carried out described reciprocal process by medium control protocol message.
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| CN101247431B (en) * | 2008-03-14 | 2010-12-08 | 中兴通讯股份有限公司 | Method and system for implementing IP multimedia subsystem monitoring |
| CN101035036B (en) * | 2007-04-19 | 2011-03-02 | 中兴通讯股份有限公司 | Legal monitoring system and method |
| CN101321361B (en) * | 2007-06-08 | 2012-06-27 | 华为技术有限公司 | Method, apparatus and system for monitoring across-area service network element |
| WO2012119464A1 (en) * | 2011-03-07 | 2012-09-13 | 中兴通讯股份有限公司 | Method and system for lawful interception |
| CN104488277A (en) * | 2013-04-17 | 2015-04-01 | 尼尔森（美国）有限公司 | Methods and apparatus to monitor media presentations |
| CN105744519A (en) * | 2016-03-17 | 2016-07-06 | 北京佰才邦技术有限公司 | Monitoring method, core network device and base station |
| WO2017157314A1 (en) * | 2016-03-17 | 2017-09-21 | 北京佰才邦技术有限公司 | Interception method and apparatus based on local breakout |
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| CN101212356B (en) * | 2006-12-31 | 2011-05-18 | 华为技术有限公司 | Session border controller, communication system and listening method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101257412B (en) * | 2007-03-02 | 2010-09-29 | 中兴通讯股份有限公司 | Alarming interception system and method for WiMAX network |
| CN101035036B (en) * | 2007-04-19 | 2011-03-02 | 中兴通讯股份有限公司 | Legal monitoring system and method |
| CN101321361B (en) * | 2007-06-08 | 2012-06-27 | 华为技术有限公司 | Method, apparatus and system for monitoring across-area service network element |
| CN101247431B (en) * | 2008-03-14 | 2010-12-08 | 中兴通讯股份有限公司 | Method and system for implementing IP multimedia subsystem monitoring |
| WO2012119464A1 (en) * | 2011-03-07 | 2012-09-13 | 中兴通讯股份有限公司 | Method and system for lawful interception |
| CN104488277A (en) * | 2013-04-17 | 2015-04-01 | 尼尔森（美国）有限公司 | Methods and apparatus to monitor media presentations |
| CN105744519A (en) * | 2016-03-17 | 2016-07-06 | 北京佰才邦技术有限公司 | Monitoring method, core network device and base station |
| WO2017157290A1 (en) * | 2016-03-17 | 2017-09-21 | 北京佰才邦技术有限公司 | Interception method, core network device and base station |
| WO2017157314A1 (en) * | 2016-03-17 | 2017-09-21 | 北京佰才邦技术有限公司 | Interception method and apparatus based on local breakout |
| CN105744519B (en) * | 2016-03-17 | 2019-05-21 | 北京佰才邦技术有限公司 | A kind of intercepting method, equipment of the core network and base station |
| US10986495B2 (en) | 2016-03-17 | 2021-04-20 | Baicells Technologies Co. Ltd. | Interception method and apparatus based on local breakout |
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| CN100493114C (en) | 2009-05-27 |
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