Installation and evaluation of RFID readers on moving vehicles

Authors:
Eun-Kyu Lee;Young Min Yoo;Chan Gook Park;Minsoo Kim;Mario Gerla
Affiliations:
University of California, LA, Los Angeles, CA, USA;Seoul National University, Seoul, South Korea;Seoul National University, Seoul, South Korea;Electronics and Telecommunications Research Institute, Daejeon, South Korea;University of California, LA, Los Angeles, CA, USA
Venue:
Proceedings of the sixth ACM international workshop on VehiculAr InterNETworking
Year:
2009

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Abstract

Due to recent technology advancements, RFID readers have been proposed for several vehicular applications ranging from safe navigation to intelligent transport. However, one obstacle to deployment is the unpredictable read performance. An RFID reader occasionally fails to read an RFID tag even in static circumstances, mostly due to collisions. In a mobile vehicular environment, latency becomes the key performance factor because of the high speed of vehicles. This is particularly true when the RFID reader is on the moving vehicle. In this paper, we investigate RFID read latency and thus effectiveness of on-vehicles reader installations for a wide range of speeds. First, we experimentally study the impact of reader and tag relative positions on read errors and read rates. Then we conduct road experiments at varying speeds. The results reveal the critical factors that influence on-vehicle RFID read performance, and give us guidance to identify and pursue directions for improvement.