A method for forming dynamic cooperative alliance structure based on Bayesian alliance game

Abstract

The invention discloses a dynamic cooperation alliance structure forming method based on the Bayes alliance game and relates to the field of wireless communication physical layers. The method comprises the steps that for detected misconduct nodes, the cooperation probability is used as a center, the alliance belief probability of the misconduct nodes is computed, and different network environments are formed by dividing; in each network environment, the Bell number, namely the number of all alliance structures which can be formed by all the nodes is computed; according to the alliance benefit values of the nodes of the alliance structures, the node benefit values under a certain alliance structure are listed based on all possible network environment sequences, namely contracts under the alliance structure are obtained; an iteration removing mechanism and an early-middle-phase blocking mechanism are used for finding the contract which meets a Bayes core condition; the contract is the Bayes alliance structure which accords with Nash stability, and safe transmission of the physical layer is achieved; and according to the contracts, the nodes in a wireless zone send information according to the cooperative communication alliance structure. The fact that the safety of the physical layer is the best is guaranteed according to the method.

Description

technical field [0001] The invention relates to the field of wireless communication physical layers, in particular to a method for forming a dynamic cooperative alliance structure based on a Bayesian alliance game. Background technique [0002] The broadcast characteristics of wireless transmission make nodes in the network vulnerable to attacks and eavesdropping by malicious nodes. Cooperative communication utilizes the forwarding of cooperative nodes to become a practically applicable physical layer security technology. In a real wireless network environment, a node is not completely aware of the cooperation type of other nodes, and whether a node participates in cooperation also directly affects the final revenue function. Bayesian alliance game is used to dynamically estimate the behavior state of nodes, and on this basis, possible utility functions are calculated to form a reasonable cooperative communication and transmission alliance between nodes under complete infor...

AI Technical Summary

Problems solved by technology

[0003] The network environment in wireless communication is changing dynamically in real time. Nodes are unknown to the cooperative behavior of potential cooperative nodes around them. At present, there is no effective mechanism to know the behavior of potential cooperative nodes to form a stable alliance under incomplete information. An Algorithm with Optimum Security Performance in the Structure Guarantee Physical Layer

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