Dynamic bidirectional spectrum allocation method for resisting Sybil attack of primary user and intelligent terminal

Abstract

The invention belongs to the technical field of wireless communication, and discloses a dynamic bidirectional spectrum allocation method for resisting Sybil attack of a primary user and an intelligentterminal, and aims to defend against innovative Sybil attack of the primary user so as to dynamically correspond to a bidirectional anti-strategy control spectrum auction model for quoting accordingto a flexible and real estimation value and determine a bidding relationship between the primary user and a secondary user in the model. Spectrum auction is carried out through a specific bidding strategy; an auction theory and an auction mechanism are adopted to prevent Sybil attacks of a primary user, and spectrum auction is carried out on line through a bidding strategy. According to the method, auction models in economics are integrated, and an online dynamic spectrum auction mechanism capable of meeting the flexible requirements of secondary users for channels and resisting Sybil attacksof bidding is designed; through the mechanism, the primary user and the secondary user can bid the spectrum by submitting different requirements of the users for the spectrum and corresponding estimation functions, Sybil attacks of illegal primary users are prevented, and a better spectrum sharing mechanism is realized.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and in particular relates to a dynamic two-way frequency spectrum allocation method and an intelligent terminal against a Sybil attack of a primary user. Background technique [0002] Currently, the closest existing technology: The radio spectrum is a critical but scarce resource for wireless communications. With the emergence of software-defined radios (SDR, software-definedradios) and wireless devices, the problem of spectrum shortage is becoming more and more serious, and has become a bottleneck for the rapid development of the wireless communication industry. In traditional static spectrum allocation mechanisms, long-term spectrum licenses are issued to wireless devices, resulting in low spectrum utilization due to traffic fluctuations. To improve spectrum utility, dynamic spectrum access mechanisms have been proposed to reallocate spectrum resources, where spectrum owners are...

AI Technical Summary

Problems solved by technology

In the two-way spectrum auction, the main user also needs to bid, and it is very likely to attack

[0005] (2) Most of the existing auction-based spectrum allocation mechanisms are static allocation, that is, spectrum resources and user applications are regarded as static existence, regardless of the time factor, which is not realistic

[0006] (3) There is currently no spectrum allocation mechanism that can solve the above problems

That is, the existing algorithm cannot prevent the primary user Sybil attack and consider the flexibility of the time dimension of the spectrum

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