Method for implementing legal listening
A technology of legal monitoring and monitoring equipment, applied in digital transmission systems, electrical components, transmission systems, etc., can solve the problems of monitoring business data loss, inability to monitor business data, and reduce the performance of mobile IP network monitoring services, so as to avoid loss, Ensure the effect of monitoring business performance
Inactive Publication Date: 2008-11-26
HUAWEI TECH CO LTD
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[0014] However, in the prior art, since the home agent sends a roaming notification message to the interception controller to trigger the interception device in the roaming network to perform the interception configuration process, and the home agent sends a registration success message to the mobile node to trigger the implementation of triangular routing or The process of route optimization is a parallel process that does not affect each other. Therefore, if the route adjustment process of triangular routing or route optimization is completed before the process of monitoring configuration, then, before the process of monitoring configuration is completed, the monitoring device of the roaming network will not update the corresponding The service data of the mobile node is sent to the monitoring controller, resulting in the loss of monitoring service data, making it impossible for the law enforcement agency to monitor all the service data, reducing the monitoring service performance of the mobile IP network
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[0044] The present invention proposes a method for realizing legal interception, the core idea of which is: after the home agent of the mobile node sends the roaming notification message carrying the care-of address information of the mobile node to the monitoring controller, it monitors whether it receives the notification from the monitoring controller. Listen to the configuration completion message, if received, send the registration success response message to the mobile node; after the mobile node receives the registration success response message, execute the route adjustment process, and exchange service information with the peer device according to the route adjustment result; the mobile node The monitoring device of the roaming network sends the service information corresponding to the mobile node to the monitoring controller.
[0045]Among them, in order to ensure that the communication service of the mobile node can be carried out normally, the present invention ca...
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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 [0001] The invention relates to interception technology, in particular to a method for realizing legal interception in a mobile IP network. Background technique [0002] With the development of network technology and the application of a large number of mobile nodes, such as notebook computers, personal digital assistants (PDAs), mobile phones, and vehicle-mounted devices, mobile IP technology has emerged. The basic principle of mobile IP technology is to make the mobile node always use the initial IP address for IP communication during the mobile process, so as to ensure that the upper-layer applications carried by the IP network layer remain uninterrupted and continuous during the movement. [0003] figure 1 It is a flow chart of service realization when a mobile node roams in a mobile IP network. see figure 1 , in the mobile IP network, when the mobile node roams to other places, the basic process of realizing the mobile IP service includes the followin...
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IPC IPC(8): H04L12/26H04L12/66H04L29/06
Inventor 赵烨
Owner HUAWEI TECH CO LTD