Abstract
Radio Frequency Identification (RFID) technology faces the problem of message collisions. The coexistence of tags sharing the communication channel degrades bandwidth, and increases the number of bits transmitted. The window methodology, which controls the number of bits transmitted by the tags, is applied to the collision tree (CT) protocol to solve the tag collision problem. The combination of this methodology with the bit-tracking technology, used in CT, improves the performance of the window and produces a new protocol which decreases the number of bits transmitted. The aim of this paper is to show how the CT bit-tracking protocol is influenced by the proposed window, and how the performance of the novel protocol improves under different conditions of the scenario. Therefore, we have performed a fair comparison of the CT protocol, which uses bit-tracking to identify the first collided bit, and the new proposed protocol with the window methodology. Simulations results show that the proposed window positively decreases the total number of bits that are transmitted by the tags, and outperforms the CT protocol latency in slow tag data rate scenarios.
Highlights
Radio frequency identification (RFID) technology is used for auto identification as a replacement of the barcodes
We propose to use our previously developed window methodology, whose positive results were presented in [18,19] applied to the Query Tree (QT) protocol, with the collision tree (CT) protocol [17], which uses bit-tracking technology
We present a number of simulations to analyze the influence of the window in the CT protocol
Summary
Radio frequency identification (RFID) technology is used for auto identification (auto-ID) as a replacement of the barcodes. RFID can wirelessly read codes that were previously stored in small transponders/tags. These tags are attached to different objects for monitoring and tracking in an omnidirectional fashion. Various multi-access procedures have been developed in order to separate physically the transmitters’ signals [3] They are classified into Space Division Multiple Access (SDMA), Frequency. Using a controlled directional antenna on the reader, it can point the beam at different zones to be read. These techniques are expensive and require complex antenna designs. Transmission channel is split up into different carrier frequencies that are simultaneously available It requires a complex receiver at the reader
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
