Title
Tagcaster: Activating Wireless Voice of Electronic Toll Collection Systems With Zero Start-Up Cost
Abstract
This work enhances the machine-to-human communication between electronic toll collection (ETC) systems and drivers by providing an AM broadcast service to deployed ETC systems. This study is the first to show that ultra-high radio frequency identification signals can be received by an AM radio receiver due to the presence of the nonlinearity effect in the AM receiver. Such a phenomenon allows the development of a previously infeasible cross-technology and cross-frequency communication, called Tagcaster, which converts an ETC reader to an AM station for broadcasting short messages (e.g., charged-fees and traffic forecast) to drivers at tollbooths. The key innovation in this work is the engineering of Tagcaster over off-the-shelf ETC systems using shadow carrier and baseband whitening without the need for hardware nor firmware changes. This feature allows zero-cost rapid deployment in the existing ETC infrastructure. Two prototypes of Tagcaster are designed, implemented, and evaluated over four general and five vehicle-mounted AM receivers (e.g., Toyota, Audi, and Jetta). Experiments reveal that Tagcaster can provide good-quality (PESQ>2) and stable AM broadcasting service with a 30 m coverage range. Tagcaster remarkably improves user experience at ETC stations, and two-thirds of volunteer drivers rate it with a score of 4+ out of 5.
Year
DOI
Venue
2022
10.1109/TNET.2022.3169914
IEEE/ACM Transactions on Networking
Keywords
DocType
Volume
E-Toll collection,RFID,cross-technology communication,IoT
Journal
30
Issue
ISSN
Citations 
5
1063-6692
0
PageRank 
References 
Authors
0.34
18
4
Name
Order
Citations
PageRank
Zhenlin An1287.60
Qiongzheng Lin200.34
Lei Yang332118.58
Lei Xie428334.16