LANDMARC: indoor location sensing using active RFID
Wireless Networks - Special issue: Pervasive computing and communications
Adaptive splitting protocols for RFID tag collision arbitration
Proceedings of the 7th ACM international symposium on Mobile ad hoc networking and computing
Intelligent Query Tree (IQT) Protocol to Improve RFID Tag Read Efficiency
ICIT '06 Proceedings of the 9th International Conference on Information Technology
Protecting RFID communications in supply chains
ASIACCS '07 Proceedings of the 2nd ACM symposium on Information, computer and communications security
Mining Frequent Trajectory Patterns for Activity Monitoring Using Radio Frequency Tag Arrays
PERCOM '07 Proceedings of the Fifth IEEE International Conference on Pervasive Computing and Communications
Physical Access Control for Captured RFID Data
IEEE Pervasive Computing
A framework for fast RFID tag reading in static and mobile environments
Computer Networks: The International Journal of Computer and Telecommunications Networking
Finding popular categories for RFID tags
Proceedings of the 9th ACM international symposium on Mobile ad hoc networking and computing
Sherlock: automatically locating objects for humans
Proceedings of the 6th international conference on Mobile systems, applications, and services
SixthSense: RFID-based Enterprise Intelligence
Proceedings of the 6th international conference on Mobile systems, applications, and services
How to Monitor for Missing RFID tags
ICDCS '08 Proceedings of the 2008 The 28th International Conference on Distributed Computing Systems
Towards continuous asset tracking: low-power communication and fail-safe presence assurance
SECON'09 Proceedings of the 6th Annual IEEE communications society conference on Sensor, Mesh and Ad Hoc Communications and Networks
Efficient continuous scanning in RFID systems
INFOCOM'10 Proceedings of the 29th conference on Information communications
Energy efficient algorithms for the RFID estimation problem
INFOCOM'10 Proceedings of the 29th conference on Information communications
Identifying the missing tags in a large RFID system
Proceedings of the eleventh ACM international symposium on Mobile ad hoc networking and computing
Energy-efficient polling protocols in RFID systems
MobiHoc '11 Proceedings of the Twelfth ACM International Symposium on Mobile Ad Hoc Networking and Computing
RFID security and privacy: a research survey
IEEE Journal on Selected Areas in Communications
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RFID (radio frequency identification) technologies are poised to revolutionize retail, warehouse and supply chain management. One of their interesting applications is to automatically detect missing tags (and the associated objects) in a large storage space. In order to timely catch any missing event such as theft, the detection operation may have to be performed frequently. Because RFID systems typically work under low-rate channels, past research has focused on reducing execution time of a detection protocol, in order to prevent excessively-long protocol execution from interfering normal inventory operations. However, when active tags are used to provide a large spatial coverage, energy efficiency becomes critical in prolonging the lifetime of these battery-powered tags. Existing literature lacks thorough study on how to conserve energy in the process of missing-tag detection and how to jointly optimize energy efficiency and time efficiency. This paper makes two important contributions: First, we propose a novel protocol design that takes both energy efficiency and time efficiency into consideration. It achieves multi-fold reduction in both energy cost and execution time when comparing with the best existing work. In some cases, the reduction is more than an order of magnitude. Second, we reveal a fundamental energy-time tradeoff in missing-tag detection. Through our analytical framework, we are able to flexibly control the tradeoff through a couple of system parameters in order to achieve desirable performance.