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The increasing demand of wireless communication would lead to the scarcity of spectrum resources and many countries and institutions have begun to release rules to use of TV white space(TVWS).Most of existing studies focused on exploring TVWS in outdoor environments and there are few researched on indoor TVWS network.In this paper,we presented an indoor three-dimensional TV white space network design.This is the first white space network design built in indoor 3D space.Considered the indoor environment seriously influences the wireless signal strength,we applied the path loss model.We proposed the 3D distance system and determined the AP placement based on path loss model.We built an experiment platform to communicate in TVWS and we optimized spectrum allocation in simulation.Experimental results shows that this is an effectual architecture and might work in real world.Our system satisfied the demand traffic rate,reduced system cost and achieved fairness among users.