Physical layer security transmission method for keeping relay and jamming node selection result secret

Abstract

The invention provides a physical layer security transmission method for keeping a relay and jamming node selection result secret. A wireless transmission network in which hacking nodes exist is established and comprises a source node S, a destination node D, M intermediate nodes T<1>, T<2>, ..., T<M>, and the K hacking nodes E<1>, E<2>, ..., E<K>, the whole transmission process includes two stages, wherein in the first stage, the source node broadcasts information s and considers that the information s can be successfully decoded in all the intermediate nodes in the stage; in the second stage, the selected intermediate nodes forward information to the destination node through a decoding forwarding protocol, and jamming nodes transmit jamming information to the hacking nodes. The security outage probability performance of the relay and jamming node selection result is similar to that of an optimal selection result acquired through a method of exhaustion, and the relay and jamming node selection result has high security outage probability performance; only statistical channel state information of a hacking user needs to be acquired in the relay and jamming node selection process, and high practicability is achieved; the relay and jamming node selection result is kept secret to the hacking nodes, and the transmission security of confidential signals is guaranteed.

Description

technical field [0001] The invention belongs to the communication field and relates to a physical layer security transmission method, in particular to a physical layer security transmission method for keeping the selection result of relay and interference nodes secret. Background technique [0002] With the wide application of contemporary wireless communication technology in daily life, more and more attention has been paid to the security and privacy of wireless transmission. Ensuring the security and privacy of wireless transmission has become a very important research topic. In traditional networks, security is guaranteed through the encryption mechanism at the upper layer of the network. However, signal encryption requires the generation and interaction of secret keys, which will bring additional complexity and signaling overhead to the system. Physical layer security technology ensures the security and privacy of information transmission by making use of the physical ...

AI Technical Summary

Problems solved by technology

In addition, although the existing relay or interference node selection methods can usually obtain relatively good system performance, the confidentiality of the selection process and results is not considered enough

If there are multiple eavesdropping users in the network, and they intercept the selection result of the relay or interference node, they can cooperate with each other, use cooperative beamforming and other means to eliminate or reduce interference, and extract useful signals, thereby leading to a sharp deterioration in network security performance

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