A Spectrum Access Method in Cognitive Radio Networks Based on Machine Learning

Abstract

The invention designs a spectrum access method in a cognitive radio network based on machine learning. According to the method, the interference of an authorized user and a malicious intruder to a cognitive radio user is fully considered. The method does not depend on any infrastructure. The cognitive radio user can learn the optimal spectrum access method in different states through learning. Inthe method, the cognitive radio user can be accessed into a plurality of authorized frequency bands at the same time. Due to the heterogeneity of a wireless communication network, the authorization frequency bands which can be accessed by different cognitive radio users are assumed to be different. The method is suitable for the real cognitive radio network. According to the method, the state of achannel can be accurately judged through a continuous learning process under a condition that the states of the authorized user and the malicious intruder are unknown to the cognitive radio user, sothat the optimal spectrum access method is selected to obtain the optimal communication performance.

Description

technical field [0001] The invention relates to a machine learning-based spectrum access method in a cognitive radio network, belonging to the technical field of radio networks. Background technique [0002] With the rapid increase of radio equipment and applications, the demand for spectrum resources in radio networks is increasing rapidly. However, under a fixed spectrum allocation policy, the utilization efficiency of spectrum resources is very low. Among them, the licensed spectrum allocated for broadcasting, satellite broadcasting, etc. is not fully utilized. At the same time, the unlicensed spectrum used by wireless WIFI and Bluetooth devices is very crowded. Therefore, in order to solve the problem of increasing demand for spectrum resources and low utilization efficiency, cognitive radio technology emerges as the times require. In a cognitive radio network, cognitive radio users can dynamically use the licensed spectrum without interfering with the normal communic...

AI Technical Summary

Problems solved by technology

[0013] 3. Most of the articles do not consider how to correctly perceive the state of the licensed frequency band

Traditional spectrum sensing methods take a certain amount of time to process the sensed data

[0014] 4. Most of the articles determine the spectrum access method by the infrastructure in the cognitive radio network. However, the deployment and maintenance of the infrastructure requires huge costs

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