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Radio frequency identification (RFID) is a promising technology for ubiquitous computing. To improve its function and capability, it is necessary to integrate RFID with Wireless Sensor Networks (WSNs). Although organized well, the reader collision problem is still one of the critical problems in these networks. In this letter, we propose a Multichannel Reader Collision Avoidance (MRCA) mechanism for the cluster constructed RFID-Sensor integrated networks. In this mechanism, cluster headers collect channel information of nodes and arrange nodes' reading time and transmission energy, while gateway schedules clusters' reading sequence in the same way. By using this mechanism, the system throughput and efficiency can be highly increased according to the simulation. © 2018 Computer Society of the Republic of China. All rights reserved.
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