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Sensors 2018, 18(6), 1904;

Energy-Aware RFID Anti-Collision Protocol

Faculty of Engineering, University of Deusto and DeustoTech-Fundacion Deusto, Deusto Foundation, 48007 Bilbao, Spain
Author to whom correspondence should be addressed.
Received: 21 May 2018 / Revised: 6 June 2018 / Accepted: 7 June 2018 / Published: 11 June 2018
(This article belongs to the Special Issue RFID-Based Sensors for IoT Applications)
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The growing interest in mobile devices is transforming wireless identification technologies. Mobile and battery-powered Radio Frequency Identification (RFID) readers, such as hand readers and smart phones, are are becoming increasingly attractive. These RFID readers require energy-efficient anti-collision protocols to minimize the tag collisions and to expand the reader’s battery life. Furthermore, there is an increasing interest in RFID sensor networks with a growing number of RFID sensor tags. Thus, RFID application developers must be mindful of tag anti-collision protocols. Energy-efficient protocols involve a low reader energy consumption per tag. This work presents a thorough study of the reader energy consumption per tag and analyzes the main factor that affects this metric: the frame size update strategy. Using the conclusion of this analysis, the anti-collision protocol Energy-Aware Slotted Aloha (EASA) is presented to decrease the energy consumption per tag. The frame size update strategy of EASA is configured to minimize the energy consumption per tag. As a result, EASA presents an energy-aware frame. The performance of the proposed protocol is evaluated and compared with several state of the art Aloha-based anti-collision protocols based on the current RFID standard. Simulation results show that EASA, with an average of 15 mJ consumed per tag identified, achieves a 6% average improvement in the energy consumption per tag in relation to the strategies of the comparison. View Full-Text
Keywords: radio frequency identification; EPC-global standard; anti-collision; tag estimation; energy-aware radio frequency identification; EPC-global standard; anti-collision; tag estimation; energy-aware

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Arjona, L.; Landaluce Simon, H.; Perallos Ruiz, A. Energy-Aware RFID Anti-Collision Protocol. Sensors 2018, 18, 1904.

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