Cognitive network dynamic spectrum distribution method based on oscillator phase synchronization

The invention provides a cognitive network dynamic spectrum distribution method based on oscillator phase synchronization, which overcomes the problems of low spectrum utilization efficiency and relatively high user expenses of the prior art. The method comprises the following steps: (1) drawing a spectrum interference graph; (2) obtaining a complementary graph; (3) initializing; (4) obtaining the phase value; (5) judging phase synchronization; (6) grouping nodes; (7) sequencing synchronous groups; (8) distributing spectrums; and (9) obtaining a spectrum distribution scheme. The method provided by the invention reduces the time of spectrum distribution process and effectively improves the spectrum utilization efficiency; meanwhile, the method takes full consideration of the expenses of user in purchasing spectrums in the spectrum distribution process, and distributes the spectrums with low expenses to users as many as possible, thereby reducing the total expenses of users in the cognitive network.