In this paper, we propose a coexistence scheme that allows radio-frequency identification readers or sinks to collect data from radio-frequency identification tags or sensors that use IEEE 802.15.4 wireless personal area network standard and send it to the access point via an IEEE 802.11 wireless local area network. The proposed scheme uses time scheduling and bridging via readers to allow for ...

The radio frequency identification (RFID) protocols are vulnerable to various attacks from an active or passive adversary. We shed light upon some existing security flaws in these delegation protocols. It is useful to mitigate many security weaknesses in such delegation protocols to promote the acceptance of RFID tags. We propose that a scalable RFID delegation protocol will be against traceabi...

The tag identification efficiency of a reader in an RFID system with Frame Slotted Aloha (FSA) based Anti-Collision Algorithm (ACA) can be maximized by selecting the optimal frame length with respect to the number of interrogating tags. Conventional analytical models that have been used widely to derive such an optimal frame length are inaccurate because they lack either precise characterizatio...

To uniquely identify physical objects, Radio Frequency Identification (RFID) systems are used with its limitless possibilities and low cost. RFID is a method of remotely storing and retrieving data using devices called RFID tags. An RFID tag is a small object, such as an adhesive sticker, that can be attached to or incorporated into a product. But with this common scenario involving numerous ta...

RFID technology has flourished within the last decade due to its ability to uniquely identify and track objects without line of sight. Its applications extend from supply chain management to livestock management and even to sports event timing. A MATLAB GUI is developed that integrates seamlessly with TI’s RX-MF-RNLK RFID evaluation kit. The software will provide means of demonstrating common R...

Low-cost Radio Frequency Identification (RFID) location sensing algorithm is practical and crucial for urban infrastructure location. Current RFID location algorithms are based on fixed multiple RFID reader or reference points (reader or tag) with known position, which is cost and difficult to deployment in urban environment. The objective of this study is to develop a low-cost location sensing...

Building on the previous work and an earlier design by Dr. Joe Paradiso and Kai-Yuh Hsiao, an improved swept frequency tag reader has been developed and built. The tag reader uses an AC magnetic field to detect the presence and coupling strength of magnetically-coupled resonators, in this case, passive resonant LC circuits and magnetostrictors. The previously designed swept RF tag reader is cap...

Radio Frequency IDentification (RFID) deployment is needed for efficient item identification. A simulation environment in HP-ADS (Advanced Design System of Agilent Technologies) of Ultra High Frequency RFID systems is constructed in this paper. This paper simulates the system through an electrical model. The tag is represented by a simple empirical model representing the antenna and the chip. T...

Anti-Collision algorithm based on probability can be used to estimate the number of frame slots needed at the next query round in tag identification of RFID. Each tag is equipped with a random counter to save the number that is relevant to whether the tag responds the query of reader or not. For this type anticollision algorithm, to estimate the number of tags is the most important task in the ...