Journal ArticleDOI
Anticollision Protocols for Single-Reader RFID Systems: Temporal Analysis and Optimization
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TLDR
A new performance metric is proposed by which to judge these anticollision protocols for passive RFID systems: time system efficiency, which provides a direct measure of the time taken to read a group of tags.Abstract:
One of the major challenges in the use of Radio Frequency-based Identification (RFID) on a large scale is the ability to read a large number of tags quickly. Central to solving this problem is resolving collisions that occur when multiple tags reply to the query of a reader. To this purpose, several MAC protocols for passive RFID systems have been proposed. These typically build on traditional MAC schemes, such as aloha and tree-based protocols. In this paper, we propose a new performance metric by which to judge these anticollision protocols: time system efficiency. This metric provides a direct measure of the time taken to read a group of tags. We then evaluate a set of well-known RFID MAC protocols in light of this metric. Based on the insights gained, we propose a new anticollision protocol, and show that it significantly outperforms previously proposed mechanisms.read more
Citations
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Journal ArticleDOI
Fast tag searching protocol for large-scale RFID systems
Yuanqing Zheng,Mo Li +1 more
TL;DR: The results demonstrate that the proposed tag searching protocol is highly efficient in terms of both time efficiency and transmission overhead, leading to good applicability and scalability for large-scale RFID systems.
Journal ArticleDOI
Binary Tree Slotted ALOHA for Passive RFID Tag Anticollision
TL;DR: Three novel tag anticollision protocols for passive RFID systems based on a binary tree slotted ALOHA algorithm are proposed, which utilize a dynamic, an adaptive, and a splitting method to adjust the frame length to a value close to the number of tags.
Proceedings ArticleDOI
Season: Shelving interference and joint identification in large-scale RFID systems
TL;DR: This paper proposes a protocol stack, named Season, to undertake the tasks in two phases and solve the cross-tag-collision, and shows that the scheme can achieve above 6 times improvement on the identification throughput in a large-scale dense reader environment.
Proceedings ArticleDOI
ZOE: Fast cardinality estimation for large-scale RFID systems
Yuanqing Zheng,Mo Li +1 more
TL;DR: The proposed Zero-One Estimator (ZOE) protocol rapidly converges to optimal parameter settings and achieves high estimation efficiency, significantly improves the cardinality estimation efficiency and guarantees arbitrary accuracy requirement without imposing computation and memory overhead at RFID tags.
Journal ArticleDOI
A Group-Based Binary Splitting Algorithm for UHF RFID Anti-Collision Systems
TL;DR: A collision arbitration strategy termed as group-based binary splitting algorithm (GBSA), which is an integration of an efficient tag cardinality estimation method, an optimal grouping strategy and a modified binary splitting, outperforming the existing anti-collision algorithms for UHF RFID systems.
References
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Proceedings ArticleDOI
THE ALOHA SYSTEM: another alternative for computer communications
TL;DR: A remote-access computer system under development as part of a research program to investigate the use of radio communications for computer-computer and console-computer links and a novel form of random-access radio communications developed for use within THE ALOHA SYSTEM is described.
Journal ArticleDOI
Tree algorithms for packet broadcast channels
TL;DR: A new class of high-speed, high-throughput, stable, multiaccessing algorithms is presented and it is shown that these algorithms are stable (in that all moments of delay exist) and are optimal in a certain sense.
Book ChapterDOI
Efficient Object Identification with Passive RFID Tags
TL;DR: For a typical stochastic anti-collision scheme, it is shown how to determine the optimal number of read cycles to perform under a given assurance level determining the acceptable rate of missed tags, which yields an efficient procedure for object identification.
Proceedings ArticleDOI
An enhanced dynamic framed slotted ALOHA algorithm for RFID tag identification
TL;DR: A new anti-collision algorithm called enhanced dynamic framed slotted ALOHA (EDFSA) is proposed which estimates the number of unread tags first and adjusts thenumber of responding tags or the frame size to give the optimal system efficiency.
Proceedings ArticleDOI
Fast and reliable estimation schemes in RFID systems
TL;DR: The time needed to estimate the number of tags in the system for a given accuracy is much better than schemes presented in related work, and it is shown that one can estimate the cardinality of tag-sets of any size in near-constant time.