Satellite and Terrestrial Intelligent Spectrum Sharing Method Based on Wireless Environment Map
Spectrum sharing with satellite and terrestrial components can effectively alleviate the problem of spectrum scarcity and improve spectrum utilization rate,which will play a vital role in future wireless systems.Compared with the traditional satellite-terrestrial spectrum sharing scheme with seven-color reuse,which evenly allocates the spot beam bandwidth,the beam prediction allows for a rational allocation of bandwidth based on the changing demand of the spot beam.The spectrum prediction can effectively reduce the collision probability and improve the network spectrum efficiency.Satellite and terrestrial intelligent spectrum sharing method is proposed based on the wireless environment map,the method combines beam prediction and spectrum prediction to construct a wireless environment map and to perform spectrum allocation based on the wireless environment map.The simulation results show that this method can effectively improve spectrum utilization rate and can reduce network blocking rate and user's waiting time.
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