Spectrum mobility management method based on game theory

Abstract

The invention provides a spectrum mobility management method based on the game theory, comprising the following steps: Step 1, radio users and idle frequency bands which wait for triggering are initialized; Step 2, relevant parameters of frequency band idle time and frequency band occupation time by radio users are obtained; Step 3, anticipated income of the whole frequency band management system is determined; Step 4, a series of initial strategy sets are made with the anticipated income as the goal; and Step 5, whether the strategy sets satisfy the Nash equilibrium is verified; if the strategy sets don't satisfy the Nash equilibrium, the strategy sets are adjusted correspondingly until conditions of the Nash equilibrium are satisfied; and the best converged strategy set is further outputted. According to the invention, cognitive radio user spectrum handoff frequency can be reduced as little as possible. Thus, QoS of a secondary user is guaranteed, and interference with an authorized user is also reduced.

Description

technical field [0001] The present invention relates to a spectrum mobility management method, in particular to a game theory-based spectrum mobility management method. Background technique [0002] In the field of wireless networks, due to limited idle spectrum resources, cognitive radio users need to compete for idle resources. Different cognitive radio users have different priorities and QoS (Quality of Service, Quality of Service) requirements. Therefore, the cognitive radio system is required to ensure that the cognitive radio users with high priority receive priority services while ensuring that the spectrum resources are not limited. It will be monopolized by some cognitive radio users, that is, the cognitive system needs to manage idle spectrum resources fairly and effectively, improve system performance, system capacity, and QoS level to a certain extent. [0003] Cognitive radio users are interfered by the working conditions of licensed users, and the number and l...

AI Technical Summary

Problems solved by technology

In the field of spectrum allocation for cognitive radio systems, there are always three problems: (1) interference from cognitive radio users to licensed users; (2) interference between cognitive radio users; (3) cognitive radio user interference; Efficiency of radio systems and fairness among users

[0006] Although there are many technologies for spectrum mobility management, most of them can only guarantee the optimal handover at the moment, and cannot guarantee the spectrum utilization rate after handover and the continuous occupancy of radio users.

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