Multi-task cooperative spectrum sensing method based on game theory
A collaborative spectrum sensing and spectrum sensing technology, applied in advanced technology, climate sustainability, sustainable communication technology, etc., can solve problems such as poor performance and effect, and achieve the effect of preventing attacks, ensuring accuracy and security
Pending Publication Date: 2022-08-02
NANJING UNIV OF POSTS & TELECOMM
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[0003] The purpose of the present invention is to provide a multi-task cooperative spectrum sensing method based on game theory, which can solve the problem of poor performance and effect when secondary users perform spectrum sensing tasks
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[0047] The present invention will be further described below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solutions of the present invention more clearly, and cannot be used to limit the protection scope of the present invention.
[0048] refer to figure 1 , Blockchain is a chain data structure with blocks as units and connected in chronological order without the participation of third parties. A set of non-tamperable ledger records is maintained between secondary users to ensure the consistency, authenticity, security and reliability of data shared by nodes in the distributed network. The blockchain uses asymmetric encryption technology to ensure the security of transactions. Miners publish blocks to the blockchain to ensure that the block data is transparent and open to all nodes on the blockchain, and cannot be tampered with.
[0049] In a multi-task cooperative spectrum sensing method based on game theory...
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The invention discloses a multi-task cooperative spectrum sensing method based on a game theory, and the method comprises the steps: introducing an incentive mechanism of crowd sensing into a spectrum sensing process in a multi-task sensing scene, combining a block chain technology with the spectrum sensing, checking the historical sensing behaviors of each secondary user through a block chain by a secondary user base station, and carrying out the spectrum sensing through the block chain. The sensing quality of secondary users is evaluated on the basis of historical sensing behaviors, a secondary user set for executing spectrum sensing tasks is selected by adopting a greedy algorithm, a sensing task utility function of the secondary users is defined on the basis of task budget, secondary user detection probability, sensing time, residual energy and other factors, and the secondary users achieve respective optimal utility through games. And the secondary user base station issues a sensing reward based on the sensing quality of the secondary user and the difficulty of the spectrum sensing task, and updates task information to the block chain after a round of spectrum sensing task is executed.
Description
technical field [0001] The invention relates to the field of communication technologies, in particular to a multi-task cooperative spectrum sensing method based on game theory. Background technique [0002] With the vigorous development of the mobile Internet and the Internet of Things, people's demand for spectrum resources is even more urgent. Traditional radio spectrum allocation is a fixed allocation strategy, which makes spectrum resources not fully utilized. Cognitive radio technology is a spectrum sharing technology that can improve spectrum utilization. Spectrum sensing is one of the key technologies of cognitive radio systems. . Spectrum sensing performed by a single sub-user is easily affected by factors such as shadow effect and multipath fading, and it is difficult to make correct local judgment results. Multi-user cooperative sensing can overcome these difficulties, but it will bring malicious sub-users colluding attacks and tampering. Sensing data, etc., seri...
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Login to View More IPC IPC(8): H04W16/14H04W12/122
CPCH04W16/14H04W12/122Y02D30/70
Inventor 朱琦季楚
Owner NANJING UNIV OF POSTS & TELECOMM