Abstract: In existing localization systems of using RFID technology,there is a lack of systems that localize mobile tags using heterogeneous mobile readers in a distributed manner,and positioning accuracy is low.We proposed the LSMT-RFID system for localizing mobile RFID tags using a group of ad hoc heterogeneous mobile RFID readers.Mobile readers cooperate with each other through time-constrained interleaving processes,and those readers in neighborhood share interrogation information,estimate tag locations accordingly and employ both proactive and reactive protocols to ensure timely dissemination of location information.Simulation experiments based on ns-3 were set to the positioning capability of the scheme,especially,the average localization error and positioning delay.The results show that the proposed scheme can achieve effective positioning.

Key words: Internet of things,RFID,Readers,Localization,Accuracy,Cooperation