Dynamic spectrum sharing method based on user online learning and low-overhead cooperation

Abstract

The invention discloses a dynamic spectrum sharing method based on user online learning and low-overhead cooperation, and belongs to the technical field of electromagnetic spectrums. The method comprises the following steps of: enabling a secondary user to acquire frequency spectrum sharing scene information and requirement parameters; then initializing a state parameter and a spectrum sensing parameter of a channel; then, at the beginning of each time slot, enabling the secondary user to judge whether a direct transmission condition is met or not according to the transmission condition of theprevious time slot, selecting to directly continue transmission on the channel of the previous time slot or acquire idle channel transmission according to the channel state and spectrum sensing, andupdate the state parameter and spectrum sensing parameter of the channel; and finally, enabling the secondary user base station to perform conflict coordination according to the channel occupancy condition every a fixed number of time slots. According to the invention, through learning the channel state and the transmission condition by the secondary user, low-overhead and efficient spectrum sharing is realized, the spectrum utilization rate in a high user density and dynamic spectrum environment can be effectively improved, and efficient spectrum sharing is realized.

Description

technical field [0001] The invention belongs to the technical field of electromagnetic spectrum, and in particular relates to a dynamic spectrum sharing method based on user online learning and low-cost cooperation. Background technique [0002] The wireless communication network has become one of the most important infrastructures in the modern information society. The number of users and the demand for bandwidth continue to grow rapidly. As the core resource supporting the wireless network, the wireless spectrum is a limited and reusable scarce resource, facing new applications. Difficult access to spectrum and underutilization of allocated spectrum. In the short-wave frequency band, the frequency resources are very limited, while the number of users and their working power continue to increase, frequency competition and power competition among different users have exacerbated the deterioration of the short-wave electromagnetic environment, making the actual spectrum utili...

AI Technical Summary

Problems solved by technology

[0005] Technical problem: The present invention provides a dynamic spectrum sharing method based on user online learning and low-overhead cooperation, which mainly solves how multiple secondary users select channels according to channel competition and adjust spectrum sensing strategies according to primary user activities to achieve efficient spectrum shared technical questions

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