Cognitive radio network spectrum allocation method based on game theory

Abstract

The invention discloses a cognitive radio network master user spectrum allocation method based on a game theory, belongs to the technical field of wireless communications, and particularly relates to the field of cognitive radio networks. According to the cognitive radio network spectrum allocation method based on the game theory, the master user combined utility maximization is achieved by optimizing and pricing a sharing frequency spectrum in a cognitive radio network. Various component channel cognition user demand functions Dkl of master users and master user combined utility functions Utotal are established, a plurality of master users of the cognitive radio network are modeled to be a cooperative game model aiming at the optimizing and pricing problem of the cognition user sharing frequency spectrum, the master user combined benefits are maximized, a master user optimal frequency spectrum pricing strategy is obtained, the combined utility of the master users in the cognitive network and recognition user access performance are comprehensively considered, optimizing and sharing of spectrum resources can be effectively achieved, the utilization rate of system spectrum resources is improved, and the problem of lacking of the spectrum resources is solved.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to a frequency spectrum allocation method in the field of cognitive radio. Background technique [0002] The rapid development of wireless communication technology and the continuous growth of wireless application requirements have increased the demand for wireless spectrum in communication systems. The traditional fixed spectrum allocation method leads to fierce competition in some frequency bands and severe shortage of spectrum resources. On the other hand, a large number of allocated spectrum in some frequency bands is not fully used, resulting in low spectrum utilization. In order to effectively improve the utilization rate of spectrum resources and alleviate the shortage of spectrum resources, cognitive radio technology using dynamic spectrum access mechanism has attracted extensive attention in recent years. [0003] The cognitive radio system adopts cognitive radio term...

AI Technical Summary

Problems solved by technology

The above methods mostly consider the business needs and utility optimization of secondary users, but do not comprehensively consider the resource requirements of secondary users and the performance optimization of primary users, and cannot achieve comprehensive system performance optimization.

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