Dynamic Spectrum Access Method Based on Bidirectional Long Short-term Memory Network
A technology of dynamic spectrum access and long-short-term memory, which is applied in the field of cognitive radio, can solve problems such as single application, ignoring spectrum resource dynamics and incomplete observation, and achieve excellent performance and stable performance
Active Publication Date: 2022-06-21
HARBIN INST OF TECH
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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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specific Embodiment approach 1
[0054] Specific embodiment one: the following combination figure 1 This embodiment will be described. The dynamic spectrum access method based on the bidirectional long-short-term memory network described in this embodiment includes:
[0055] In the case of orthogonal frequency division multiple access in the communication system, each channel is fixedly assigned to a primary user, the primary user transmits information according to the autonomous access strategy, and the secondary user predicts the channel occupancy state in each time slot according to the historical action data. And select one of the unoccupied channels to transmit information;
[0056] Methods for secondary users to transmit information include:
[0057] The DQN reinforcement learning algorithm is optimized by a bidirectional long-short-term memory network to form the DBRQN algorithm model;
[0058] Input historical action data into the DBRQN algorithm model to predict dynamic spectral holes;
[0059] Th...
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A dynamic spectrum access method based on a two-way long-short-term memory network belongs to the field of cognitive radio technology. The present invention solves the problem that the existing spectrum sharing method does not consider the dynamics and incomplete observation of spectrum resources and has a single application. It includes: In the case of Orthogonal Frequency Division Multiple Access in the communication system, each channel is fixedly assigned to a primary user, the primary user transmits information according to an autonomous access strategy, and the secondary user predicts channel occupancy based on historical action data in each time slot state, select one of the unoccupied channels to transmit information; the method of secondary user transmission information includes: using two-way long-short-term memory network to optimize the DQN reinforcement learning algorithm to form a DBRQN algorithm model; inputting historical action data into the DBRQN algorithm model to predict dynamic spectrum holes; sensing The predicted dynamic spectrum hole is used to obtain the optimal channel access strategy, and then the idle spectrum hole is dynamically accessed to realize dynamic spectrum sharing. The present invention is used for spectrum sharing.
Description
technical field [0001] The invention relates to a dynamic 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 are successively allocated to specific users, and spectrum resources have become a key strategic resource due to increasing scarcity. The current fixed frequency spectrum allocation strategy is to license the fixed frequency band to the relevant users, and these users are called authorized users. If spectrum resources are occupied by idle users for a long time, spectrum will be wasted, so cognitive radio technology is introduced. [0003] Cognitive radio technology is an efficient spectrum utilization method based on sensing and sharing. The network distinguishes between primary and secondary users. The primary user is the authorized user, but different from the fixed allocatio...
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IPC IPC(8): H04W16/14G06N3/04G06N3/08
Inventor 高玉龙陈鹏郭士增
Owner HARBIN INST OF TECH