Safety detection method and device for distributed safety communication system

Abstract

The invention provides a security detection method for a distributed security communication system. The method comprises steps: first signals transmitted to a receiving-end device by multiple transmitting-end devices at an nth time slot are monitored, wherein the first signals comprise first manual noise signals, the nth time slot is the current time slot, and n is a positive integer; according to the first signals, a first signal to interference and noise ratio (SINR) of an eavesdropping-end device is determined, and according to the first SINR, the first eavesdropping capacity of the eavesdropping-end device at the nth time slot is determined; according to the first eavesdropping capacity and the acquired receiving capacity of the receiving-end device, the security capacity of the receiving-end device is determined; and according to the security capacity change trend, the security of the distributed security communication system is detected, and besides, according to a third direction of arrival from the transmitting-end device to the receiving-end device, the receiving beam weight of a beamforming device of the eavesdropping-end device is adjusted. The embodiment of the invention can detect the security of the distributed security communication system.

Description

technical field [0001] The present invention relates to the field of communication technologies, in particular to a safety detection method and device for a distributed safety communication system. Background technique [0002] Distributed Beamforming (Distributed Beamforming) is a cooperative communication technology. Multiple transmitter devices send the same information to the target device, and by controlling the transmission phase of the transmitter device, the signals of multiple transmitter devices are transmitted to the target device. devices are efficiently merged. [0003] The current communication environment is generally more complicated. When there is an eavesdropping device in the environment, the eavesdropping device can estimate the channel direction information according to the signal sent by the transmitting device to the receiving device, and adjust its own beamformer accordingly, so that its The eavesdropping capacity of the network increases, so the sec...

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Problems solved by technology

[0003] The current communication environment is generally more complicated. When there is an eavesdropping device in the environment, the eavesdropping device can estimate the channel direction information according to the signal sent by the transmitting device to the receiving device, and adjust its own beamformer accordingly, so that its own The eavesdropping capacity increases, so that the security of the distributed security communication system will decrease

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