An Investigation into thie Energy Eficiency of Pure and Slotted Aloha Based REID Anti-Collision Protocols

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2007 IEEE International Symposium on a World of Wireless, Mobile and Multimedia Networks, Page: 1-4

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Dheeraj K. Klair; Kwan-Wu Chin; Raad Raad
Institute of Electrical and Electronics Engineers (IEEE)
Computer Science; Social Sciences; Physical Sciences and Mathematics
conference paper description
This paper investigates the energy efficiency of RFID anti-collision protocols and their suitability for use in RFID-enhanced wireless sensor networks (WSNs). We present a detailed analytical methodology and an in-depth qualitative and quantitative energy consumption analysis of Pure and Slotted Aloha anti-collision protocols and their variants. We find that Slotted Aloha variants that employ muting with early-end arc the most energy efficient, but are computationally expensive. Overall, for all Aloha variants we investigated, if the offered load is very high, tag responses cause a bottleneck at the reader. Thereby, resulting in no tags being identified and incur significant identification delays - thus severely impacting a sensor node's battery life. © 2007 IEEE.