Dynamic spectrum access method based on bidirectional long-short-term memory network

Abstract

The invention discloses a dynamic spectrum access method based on a bidirectional long-short-term memory network, belongs to the technical field of cognitive radio, and aims at solving the problems that the existing spectrum sharing use method does not consider the dynamics and incomplete observability of spectrum resources and is single in application. The method comprises the steps that under the condition of orthogonal frequency division multiple access, each channel is fixedly distributed to a main user, the main user transmits information according to an autonomous access strategy, a secondary user predicts the channel occupation state according to historical action data in each time slot, and one unoccupied channel is selected to transmit information; the secondary user information transmission method comprises the following steps: optimizing a DQN reinforcement learning algorithm by adopting a bidirectional long-short-term memory network to form a DBRQN algorithm model; the historical action data is input into a DBRQN algorithm model to predict a dynamic spectrum hole; and the predicted dynamic spectrum hole is sensed to obtain an optimal channel access strategy, and then an idle spectrum hole is dynamically accessed to realize dynamic spectrum sharing. The dynamic spectrum access method is used for spectrum sharing.

Description

technical field [0001] The invention relates to a dynamic frequency spectrum access method, which belongs to the technical field of cognitive radio. Background technique [0002] With the rapid development of modern communication technology, the electromagnetic wave frequency bands suitable for communication have been allocated to specific users one after another, and spectrum resources have become key strategic resources due to their increasing scarcity. The current fixed frequency spectrum allocation strategy is to authorize fixed frequency bands to relevant users, and these users are called authorized users, who occupy the corresponding frequency bands independently, and unlicensed users are not allowed to use the spectrum resources for communication. If the spectrum resources are occupied by idle users for a long time, the spectrum will be wasted, so the cognitive radio technology is introduced. [0003] Cognitive radio technology is an efficient spectrum utilization me...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the existing spectrum sharing method does not consider the dynamics and incomplete observation of spectrum resources, and has a single application, and provides a dynamic spectrum access method based on a two-way long-short-term memory network

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