CN101047569A - Method for implementing legal listening - Google Patents
Method for implementing legal listening Download PDFInfo
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- CN101047569A CN101047569A CN 200610079174 CN200610079174A CN101047569A CN 101047569 A CN101047569 A CN 101047569A CN 200610079174 CN200610079174 CN 200610079174 CN 200610079174 A CN200610079174 A CN 200610079174A CN 101047569 A CN101047569 A CN 101047569A
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Abstract
A method for realizing legal monitor sending the roaming notice message carried with mobile node retransmitting address information to monitor controller by hometown agent of mobile node, monitoring whether monitor management finish message sent from monitor controller is received or not by hometown agent, sending logon-successful response message to mobile node if it is, executing route regulation if said response message is received mobile node and sending service information corresponding to mobile node to monitor controller by monitor device of mobile node roaming network according to interactive service information of route regulated result with opposite end device.
Description
Technical field
The present invention relates to monitoring technique, particularly relate to a kind of method that in mobile IP network, realizes Lawful Interception.
Background technology
Along with the application of development of internet technology and a large amount of removable nodes, as notebook computer, PDA(Personal Digital Assistant), mobile phone, mobile unit etc., mobile IP technology has appearred.The basic principle of mobile IP technology is to make mobile node can carry out IP communication with initial IP address all the time in moving process, thus not disruptive and the continuing property of the upper layer application that guarantees the IP network layer carrying in keeping moving.
Fig. 1 is the business realizing flow chart when mobile node is roamed in mobile IP network.Referring to Fig. 1, in mobile IP network, when mobile node roams into the other places, realize that the basic process of mobile IP service may further comprise the steps:
Step 101: when roaming took place mobile node, this mobile node was by the access device access roaming zone network of roaming place.
Step 102: the access device of roaming place is that mobile node is distributed in the Care-of Address in the network of roaming place.
Step 103: the home agent in the moving nodes local network (HA) receives the registration message that carries address information that mobile node is sent.
Step 104: the home agent message that will succeed in registration is sent to mobile node.
Step 105: after mobile node receives the message that succeeds in registration, carry out follow-up route adjustment process.
Here, if adopt the mobile IPv 4 technology, so, described route adjustment process is a triangle route forming process; If adopt the mobile IP v 6 technology, so, described route adjustment process is a route optimization process.
Step 106: mobile node is adjusted the result according to route, carries out service communication by roaming place network and opposite equip..
Here, Fig. 2 A is the schematic diagram that adopts the mobile IPv 4 technology to communicate with the triangle routing mode.Referring to Fig. 2 A, when mobile node and the opposite equip. that communicates with adopt the mobile IPv 4 technology to communicate, be to realize service communication in this step by the triangle routing mode, comprise: mobile node directly is sent to opposite equip. by the roaming place network with self business datum, herein, business datum need not the forwarding through home agent; And opposite equip. at first is sent to home agent with the business datum of self, after this home agent receives business datum, by the roaming place network this business datum is sent to mobile node.
Here, Fig. 2 B is the schematic diagram that adopts the mobile IP v 6 technology to communicate with routing optimization manner.Referring to Fig. 2 B, when mobile node and the opposite equip. that communicates with adopt the mobile IP v 6 technology to communicate, be to realize service communication by routing optimization manner in this step, comprise: mobile node is by the roaming place network, and self business datum directly is sent to opposite equip.; And opposite equip. is by the roaming place network, and self business datum directly is sent to mobile node, and wherein, both sides' data all need not the forwarding through home agent.
At present, for various communication networks, all must provide the function of Lawful Interception.Yet at mobile IP network, when roaming takes place in mobile node, no matter be to adopt the triangle routing mode of mobile IPv 4 technology or the routing optimization manner of mobile IP v 6 technology, all exist data to need not the problem of transmitting through the home agent in the moving nodes local network, like this, then can't obtain the data realization monitoring of mobile node by home agent.At this kind situation, the solution of prior art is: after the home agent in the moving nodes local network receives registration message, the message of not only carrying out among above-mentioned Fig. 1 that will succeed in registration is sent to the process of mobile node, but also the roaming notice message that will carry the mobile node address information is sent to the monitoring controller of law enforcement agency's side; Referring to Fig. 3, monitor controller and will monitor the audiomonitor that configuration distributing is given the mobile node roaming network again; After the audiomonitor of this roaming network is finished and monitored configuration, receive the business datum of mobile node, and be sent to the monitoring controller according to triangle route or routing optimization manner transmission.
Yet, in the prior art, thereby, home agent is sent to the process that controller triggers the audiomonitor execution monitoring configuration of roaming network of monitoring because will roaming notice message, be sent to mobile node thereby trigger to carry out the process of triangle route or routing optimality be the parallel procedure that is independent of each other with the home agent message that will succeed in registration, therefore, if the route adjustment process of triangle route or routing optimality is finished prior to monitoring layoutprocedure, so, before the monitoring layoutprocedure is finished, the audiomonitor of roaming network then can not send to the business datum corresponding to mobile node the monitoring controller, thereby cause the loss of monitoring service data, make law enforcement agency's side can't listen to all business datums, reduced the monitoring service performance of mobile IP network.
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, so that guarantee to listen to all business datums that transmit by triangle route or routing optimization manner in mobile IP network.
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:
The roaming notice message that the home agent of A, mobile node will carry the mobile node address information is sent to the monitoring controller;
Whether the monitoring of B, home agent receives is monitored monitoring that controller sends and disposes and finish message, if receive, the response message that then will succeed in registration is sent to mobile node;
After C, mobile node receive the response message that succeeds in registration, carry out the route adjustment process, adjust result and opposite equip. interactive service information according to route;
The audiomonitor of D, mobile node roaming network will be sent to the monitoring controller corresponding to the business information of mobile node.
This method further comprises: the time-out time that timer and this timer are set in described home agent;
Described steps A further comprises: described home agent starts set timer;
In step B, whether the monitoring of described home agent receives is monitored monitoring that controller sends and dispose the step of finishing message and comprise: whether the home agent monitoring received before timer expiry is monitored monitoring that controller sends and disposes and finish message.
Described step B further comprises: if described home agent monitors after timer arrives time-out time, do not received and monitored monitoring that controller sends and dispose and finish message, the response message that then will succeed in registration is sent to mobile node.
Before steps A, further comprise:
A01, described home agent receive the registration message that carries the mobile node address information;
A02, described home agent judge according to the sign of the mobile node that carries in the registration message and the eavesdropping target's that preserves in advance in self sign whether described mobile node is the eavesdropping target, if, execution in step A then.
Between steps A and step B, further comprise:
B01, monitoring controller will be monitored the audiomonitor that configuration information is sent to the mobile node roaming network;
The audiomonitor of B02, mobile node roaming network is monitored configuration according to received monitoring configuration information;
B03, monitor controller and determine that the audiomonitor of mobile node roaming network is finished and monitor configuration, will monitor deployment and finish message and send to described home agent.
Described step B01 comprises: monitor controller and obtain address information from received roaming notice message, determine the address information of the audiomonitor of mobile node roaming network according to this address information; Monitor the address information of controller, will monitor the audiomonitor that configuration information is sent to the mobile node roaming network according to the audiomonitor of determined mobile node roaming network.
Described step B02 further comprises: the audiomonitor of mobile node roaming network finish monitor configuration after, will monitor to dispose and finish message and be sent to the monitoring controller;
In step B03, described monitoring controller determines that the audiomonitor of mobile node roaming network finishes the step of monitoring configuration and comprise: described monitoring controller receives to be monitored configuration and finishes message.
When mobile node adopted the mobile IPv 4 technology to communicate, described route adjustment process was a triangle route forming process;
When mobile node adopted the mobile IP v 6 technology to communicate, described route adjustment process was a route optimization process.
Described business information corresponding to mobile node comprises: mobile node is issued the business information of opposite equip., and/or opposite equip. sends to the business information of mobile node.
The audiomonitor of described mobile node roaming network by the routing device on the adjustment route, or be responsible for handling the gateway device of monitoring service in the roaming network.
This shows, the present invention can control the monitoring layoutprocedure and carry out earlier, the route adjustment process is to carry out after triangle route forming process or the route optimization process, thereby can guarantee in mobile IP network, to listen to all business datums that transmit by triangle route or routing optimization manner, avoid the loss of monitoring service data, guaranteed the monitoring service performance of mobile IP network.
Description of drawings
Fig. 1 is the business realizing flow chart when mobile node is roamed in mobile IP network.
Fig. 2 A is the schematic diagram that adopts the mobile IPv 4 technology to communicate with the triangle routing mode.
Fig. 2 B is the schematic diagram that adopts the mobile IP v 6 technology to communicate with routing optimization manner.
Fig. 3 realizes the schematic diagram monitored when mobile node communicates according to triangle route or routing optimization manner in mobile IP network.
Fig. 4 is the flow chart of the embodiment of the invention.
Embodiment
The present invention proposes a kind of method that realizes Lawful Interception, its core concept is: the roaming notice message that the home agent of mobile node will carry the mobile node address information is sent to after the monitoring controller, whether monitoring receives is monitored the monitoring configuration that controller sends and finishes message, if receive, the response message that then will succeed in registration is sent to mobile node; After mobile node receives the response message that succeeds in registration, carry out the route adjustment process, and adjust result and opposite equip. interactive service information according to route; The audiomonitor of mobile node roaming network will be sent to the monitoring controller corresponding to the business information of mobile node.
Wherein, for the communication service that guarantees mobile node can normally be carried out, the present invention can also further be provided with a timer on home agent, this home agent waits for that before timer expiry receive monitoring monitoring that controller sends disposes and finish message, do not finish message if after timer expiry, receive yet to monitor to dispose, then directly send the described response message that succeeds in registration.
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.
Fig. 4 is the flow chart of the embodiment of the invention.Referring to Fig. 4, when roaming took place mobile node, in order to guarantee that mobile node is all monitored by all data that triangle route or routing optimization manner transmit, implementation procedure of the present invention may further comprise the steps:
Step 401: in the home agent of moving nodes local network, timer is set in advance, and the time-out time of this timer is set.
Here, also dispose in the home agent of described mobile node the various Intercept related informations of this mobile node as the eavesdropping target.
Step 402: after mobile node was roamed, the home agent in the moving nodes local network received the registration message that carries the mobile node address information.
In this step, if mobile node adopts the mobile IPv 4 technology to communicate, so, the specific implementation process of this step comprises:
After mode one, mobile node were roamed, the registration message that mobile node will carry self identification was sent to the Foreign Agent in the roaming network; Foreign Agent in the roaming network is that mobile node is distributed in the Care-of Address in the roaming network; Foreign Agent in the roaming network is carried at the address information that is distributed the home agent that sends in the registration message in the moving nodes local network; This home agent receives the registration message that carries the mobile node address information.
After mode two, mobile node were roamed, the registration message that mobile node will carry self identification was sent to the Foreign Agent in the roaming network; Foreign Agent in the roaming network is that mobile node is distributed in the Care-of Address in the roaming network; Foreign Agent in the roaming network is carried at the address information that is distributed and is sent to mobile node in the message that succeeds in registration; Mobile node obtains address information from the message that succeeds in registration that receives, the address information that is obtained is carried at sends to home agent in the registration message then; This home agent receives the registration message that carries the mobile node address information.
In this step, technology communicates if mobile node adopts mobile IP v 6, and so, the specific implementation process of this step comprises: after mobile node was roamed, the registration message that mobile node will carry self identification was sent to the access device in the roaming network; Access device in the roaming network is that mobile node is distributed in the Care-of Address in the roaming network, the Care-of Address that is distributed is carried at is sent to mobile node in the message that succeeds in registration; Mobile node obtains Care-of Address from the message that succeeds in registration that receives, then the address information that is obtained is carried at the home agent that sends in the registration message in the home network, this home agent receives the registration message that carries the mobile node address information.
Step 403: the home agent in the moving nodes local network obtains address information from received registration message.
Step 404: this home agent is carried at the monitoring controller that is sent to actuator's side in the roaming notice message with address information after definite this mobile node is the eavesdropping target, and starts the timer that sets in advance.
In this step, described home agent can according to the sign of the mobile node that carries in the registration message with self in the eavesdropping target's that preserves in advance sign whether identical, judge whether this mobile node is the eavesdropping target.After determining that described two signs are identical, can determine that then this mobile node is the eavesdropping target.
In above-mentioned steps 403 and step 404, home agent in the moving nodes local network is after receiving registration message, do not return the response message that succeeds in registration to mobile node at once, but suspend this mobile node of response, thereby avoid mobile node to begin to carry out the route adjustment process, i.e. triangle route forming process or route optimization process.
In this step, the timer that described startup sets in advance is meant, this timer is picked up counting from 0.
In addition, in this step, the home agent in the moving nodes local network is in and waits for that monitoring monitoring that controller sends disposes and finish condition of information after starting timer.
Step 405: monitor controller and from received roaming notice message, obtain address information, determine the address information of the audiomonitor of mobile node roaming network according to this address information.
Here, the same with prior art, monitoring controller can be according to the address realm under the Care-of Address, determines can to obtain in the mobile node roaming network address information of the audiomonitor of mobile node institute interaction data.
Step 406: monitor the address information of controller, will monitor the audiomonitor that configuration information is sent to the mobile node roaming network according to the audiomonitor of determined mobile node roaming network.
Here, can comprise the concrete various monitoring parameters of monitoring content of indication in the described monitoring configuration information, such as, the monitoring parameter of the initial termination time that indication is monitored is indicated the monitoring parameter of the required Media Stream type of obtaining etc.
Step 407: the audiomonitor of mobile node roaming network is monitored layoutprocedure according to received monitoring configuration information.
Step 408: after the audiomonitor of mobile node roaming network is finished and monitored configuration, will monitor to dispose and finish message and be sent to the monitoring controller.
Step 409: monitor controller and receive after this monitorings configuration finishes message, finish message and be sent to home agent in the moving nodes local network with monitoring deployment.
Step 410: the home agent in the moving nodes local network is after starting timer, monitored constantly before timer arrives time-out time, whether receive and monitor monitoring that controller sends and dispose and finish message, if, then direct execution in step 411, otherwise, after timer arrives time-out time, execution in step 411.
Step 411: the response message that will succeed in registration of the home agent in the moving nodes local network is sent to mobile node.
Step 412: after mobile node receives the response message that succeeds in registration, carry out the route adjustment process.
If mobile node adopts the mobile IPv 4 technology to communicate, so, described in this step route adjustment process is a triangle route forming process; If mobile node adopts the mobile IP v 6 technology to communicate, so, the adjustment process of route described in this step is a route optimization process.
Step 413: mobile node and opposite equip. are adjusted the result according to route, directly communicate by the roaming place network.
Step 414: the audiomonitor of mobile node roaming network will be sent to the monitoring controller corresponding to the business information of mobile node.
Here, described business information corresponding to mobile node can be: mobile node sends to the business information of opposite equip.; And/or opposite equip. sends to the business information of mobile node.
In the present invention, the audiomonitor of described mobile node roaming network can be that mobile node is adjusted a routing device in the route, also can be the gateway device of being responsible for handling monitoring service in the roaming network.
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:
The roaming notice message that the home agent of A, mobile node will carry the mobile node address information is sent to the monitoring controller;
Whether the monitoring of B, home agent receives is monitored monitoring that controller sends and disposes and finish message, if receive, the response message that then will succeed in registration is sent to mobile node;
After C, mobile node receive the response message that succeeds in registration, carry out the route adjustment process, adjust result and opposite equip. interactive service information according to route;
The audiomonitor of D, mobile node roaming network will be sent to the monitoring controller corresponding to the business information of mobile node.
2, method according to claim 1 is characterized in that, this method further comprises: the time-out time that timer and this timer are set in described home agent;
Described steps A further comprises: described home agent starts set timer;
In step B, whether the monitoring of described home agent receives is monitored monitoring that controller sends and dispose the step of finishing message and comprise: whether the home agent monitoring received before timer expiry is monitored monitoring that controller sends and disposes and finish message.
3, method according to claim 2, it is characterized in that, described step B further comprises: if described home agent monitors after timer arrives time-out time, do not received and monitored monitoring that controller sends and dispose and finish message, the response message that then will succeed in registration is sent to mobile node.
4, method according to claim 1 is characterized in that, before steps A, further comprises:
A01, described home agent receive the registration message that carries the mobile node address information;
A02, described home agent judge according to the sign of the mobile node that carries in the registration message and the eavesdropping target's that preserves in advance in self sign whether described mobile node is the eavesdropping target, if, execution in step A then.
5, method according to claim 1 is characterized in that, further comprises between steps A and step B:
B01, monitoring controller will be monitored the audiomonitor that configuration information is sent to the mobile node roaming network;
The audiomonitor of B02, mobile node roaming network is monitored configuration according to received monitoring configuration information;
B03, monitor controller and determine that the audiomonitor of mobile node roaming network is finished and monitor configuration, will monitor deployment and finish message and send to described home agent.
6, method according to claim 5, it is characterized in that, described step B01 comprises: monitor controller and obtain address information from received roaming notice message, determine the address information of the audiomonitor of mobile node roaming network according to this address information; Monitor the address information of controller, will monitor the audiomonitor that configuration information is sent to the mobile node roaming network according to the audiomonitor of determined mobile node roaming network.
7, according to claim 5 or 6 described methods, it is characterized in that described step B02 further comprises: the audiomonitor of mobile node roaming network finish monitor configuration after, will monitor to dispose and finish message and be sent to the monitoring controller;
In step B03, described monitoring controller determines that the audiomonitor of mobile node roaming network finishes the step of monitoring configuration and comprise: described monitoring controller receives to be monitored configuration and finishes message.
8, method according to claim 1 is characterized in that, when mobile node adopted the mobile IPv 4 technology to communicate, described route adjustment process was a triangle route forming process;
When mobile node adopted the mobile IP v 6 technology to communicate, described route adjustment process was a route optimization process.
9, method according to claim 1 is characterized in that, described business information corresponding to mobile node comprises: mobile node is issued the business information of opposite equip., and/or opposite equip. sends to the business information of mobile node.
10, method according to claim 1 is characterized in that, the audiomonitor of described mobile node roaming network by the routing device on the adjustment route, or be responsible for handling the gateway device of monitoring service in the roaming network.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100791747A CN100438455C (en) | 2006-05-12 | 2006-05-12 | Method for implementing legal listening |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100791747A CN100438455C (en) | 2006-05-12 | 2006-05-12 | Method for implementing legal listening |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101047569A true CN101047569A (en) | 2007-10-03 |
| CN100438455C CN100438455C (en) | 2008-11-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100791747A Expired - Fee Related CN100438455C (en) | 2006-05-12 | 2006-05-12 | Method for implementing legal listening |
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| Country | Link |
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| CN (1) | CN100438455C (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100407847C (en) * | 2003-05-23 | 2008-07-30 | 华为技术有限公司 | System and method for realizing mobile communication roaming user monitoring |
| KR100605806B1 (en) * | 2004-06-10 | 2006-08-01 | 삼성전자주식회사 | A phone-based mobile internet protocol, voice over internet protocol, and session initiation protocol, session initiation protocol server, and routing path control method and system for session initiation protocol service |
| JP2005323391A (en) * | 2005-06-03 | 2005-11-17 | Mitsubishi Electric Corp | Handoff method and agent device |
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2006
- 2006-05-12 CN CNB2006100791747A patent/CN100438455C/en not_active Expired - Fee Related
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| CN100438455C (en) | 2008-11-26 |
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