Secure cooperative spectrum sensing method based on block chain smart contract

A collaborative spectrum sensing and smart contract technology, applied in the field of secure collaborative spectrum sensing based on blockchain smart contracts, can solve the problems of poor spectrum sensing performance and effect, to ensure accuracy and security, and prevent malicious sub-users The effect of the attack

Active Publication Date: 2021-06-18
NANJING UNIV OF POSTS & TELECOMM
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  • Abstract
  • Description
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Problems solved by technology

[0003] Purpose of the invention: In order to overcome the deficiencies of the prior art, the present invention provides a secure collaborative spectrum sensing method based on blockchain smart contracts, which can solve the problem of poor performance and effect of spectrum sensing

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  • Secure cooperative spectrum sensing method based on block chain smart contract
  • Secure cooperative spectrum sensing method based on block chain smart contract
  • Secure cooperative spectrum sensing method based on block chain smart contract

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Embodiment Construction

[0049] The present invention will be further described in detail below with reference to the accompanying drawings and examples.

[0050] The block chain is a block-based unit, according to the chain data structure connected in time, there is no need for third-party participation, it passes through cryptography, consensus mechanism and other technologies, the same level of trust or weak trust The user maintains a set of non-tampered account records to ensure consistency, authenticity, security, and reliability of each node in the distributed network. The block chain uses asymmetric encryption technology to ensure the security of the transaction, the smart contract can realize the programmability and autonomousness of the transaction.

[0051] The intelligent contract is a piece of code running on the block chain, which writes the contract in a digital form, when meeting the content, will automatically execute the code, avoid the manual operation, but also guaranteed The contract c...

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Abstract

The invention discloses a secure cooperative spectrum sensing method based on a block chain smart contract, which, for the problem of multi-user cooperative spectrum sensing in a cognitive radio system, applies a block chain smart contract technology, and introduces a reputation mechanism to realize secure cooperative spectrum sensing. A system model is constructed based on the block chain smart contract technology, and a block chain asymmetric encryption digital signature technology is introduced in a process of transmitting a local judgment result to a secondary user base station by a secondary user, so that spectrum sensing data counterfeiting attack of a malicious user is resisted. According to the method, a channel error rate, a detection probability, secondary user base station budget and secondary user residual energy are comprehensively considered; a secondary user utility function is established; a secondary user game model is constructed; and whether the secondary user uploads sensing data is determined by solving Nash equilibrium, the secondary user base station selects the secondary users by calculating and updating the reputation values of the secondary users, and a final judgment result is obtained through voting fusion.

Description

Technical field [0001] The present invention relates to the field of communication technologies, and more particularly to a safety collaborative spectrum perception method based on a block chain intelligent contract. Background technique [0002] With the booming of mobile Internet and Internet of Things, people's demand for spectrum resources is more urgent. Traditional radio spectrum allocation is a fixed allocation strategy that makes the spectrum resource cannot be fully utilized. Cognitive radio technology is a spectral sharing technology that improves spectral utilization, spectrum perception is one of the key technologies of cognitive radio systems. . A single secondary user performs spectrum perceptions to be susceptible to the influence of the shadow effect, multipath fading and other factors. It is difficult to make the right local judgment. Multi-user collaboration can overcome these difficulties, but will bring malicious users to attack, tamper Perceived data, etc., s...

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Application Information

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IPC IPC(8): H04W12/122H04W12/60H04W12/041H04W16/14H04L9/32H04B17/382H04W72/04H04L29/08
CPCH04W16/14H04L9/3247H04L9/3239H04B17/382H04W72/0453H04L67/10H04L9/50Y02D30/70
Inventor 朱琦季楚
Owner NANJING UNIV OF POSTS & TELECOMM
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