Method for maximizing monitoring non-interruption probability of system based on active monitoring

Abstract

The invention relates to a method for maximizing the monitoring non-interruption probability of a system based on active monitoring. The method comprises the following steps: (1), a legal monitoring node estimates channel state information in a communication system by monitoring pilot frequencies of a suspicious transmitting node and a suspicious receiving node; (2), by utilizing the channel state information obtained by estimation, the legal monitoring node calculates the best transmitting power p<d> and a transmission wave beam former w<t> based on the maximized monitoring non-interruption probability of the system; and (3), when the suspicious transmitting node and the suspicious receiving node are communicated, the legal monitoring node works in a full-duplex mode based on the best transmitting power p<d> and the transmission wave beam former w<t> so as to maximize the monitoring non-interruption probability of the system. By means of the method, an interference signal has relatively low influence on the legal monitoring node while having relatively high interference to the suspicious receiving node; and thus, the monitoring non-interruption probability of the whole communication system is greatly improved.

Description

technical field [0001] The invention relates to the communication field, in particular to a method for maximizing the non-interruption probability of system monitoring based on active monitoring. Background technique [0002] With the progress of society and the development of science and technology, wireless communication technology is constantly improving and improving people's life style and quality. As a core issue of wireless communication, network security has always been the focus of people's attention, and it is also the condition for the large-scale popularization and application of wireless networks. In order to meet the challenge of secure transmission in wireless communication network, wireless communication physical layer security technology emerges as the times require, and has become a current research hotspot. Starting from the perspective of information theory, physical layer security technology uses the uniqueness and reciprocity of physical channels to im...

AI Technical Summary

Problems solved by technology

It is worth pointing out that the relevant research work is still in its infancy. From the perspective of physical layer security technology to realize the legal interception of suspicious communications, there is a lot of room for development and excavation.

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