Method for safely selecting cooperative user during cooperative spectrum sensing

Abstract

The invention relates to a method for safely selecting a cooperative user during the cooperative spectrum sensing. The method comprises the following steps: firstly, a data fusion center is used for calculating the location relevance between every two users and establishing a relevance matrix by using the conventional location relevance model according to the geographic location of each cognitiveradio user; secondly, the number L of users participating in cooperation is initialized into K, and all the K cognitive radio users are brought into a cognitive radio user set participating in cooperation; thirdly, the data fusion center is used for selecting the Ks users with minimal location relevance from all the K cognitive radio users according to the location relevance matrix and the user number Ks required during the cooperative spectrum sensing; and finally, the data fusion center is used for broadcasting the user information in the cooperative user set through a control channel. In the method, the cognitive radio users with minimal location relevance are selected for cooperative spectrum sensing, so that the probability that a plurality of cognitive radio users are disturbed during the emulation attack of a master user is reduced.

Description

technical field [0001] The invention belongs to the field of cognitive radio, and in particular relates to a method for selecting cooperative users based on location correlation in a cognitive radio network. Background technique [0002] Cognitive radio technology is a mainstream solution to achieve dynamic spectrum access. It allows cognitive radio users to use the spectrum resources allocated to the primary user for transmission without affecting the communication of the primary user, so it can achieve a higher Spectrum usage efficiency. Cognitive radio technology provides strong technical support for solving the shortage of spectrum resources and improving spectrum utilization, and has become a hot spot in wireless communication research. [0003] The process of discovering available spectrum resources is called spectrum sensing. Spectrum sensing is one of the key technologies for the realization of cognitive radio. The quality of sensing performance will affect the perf...

AI Technical Summary

Problems solved by technology

[0006] The present invention aims at the problem of emulation attacks of primary users that may be suffered in cognitive radio networks, and provides a cooperative user selection method based on the location correlation between cognitive radio users, and selects cognitive radio users with less location correlation to participate in cooperation Spectrum sensing to reduce the impact of primary user emulation attacks on cooperative spectrum sensing performance

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