The Tag Duplication Problem in an Integrated WSN for RFID-Based Item-Level Inventory Monitoring

Date Added: Oct 2009
Format: PDF

Radio Frequency IDentification (RFID) technology has been adopted in various supply chain management applications because of its fast and low-cost ability to identify items uniquely. In this paper, the authors consider the integration of a Wireless Sensor Network (WSN) with RFID to provide item-level inventory monitoring in retail stores. First, they present a basic formulation for RFID-based item-level inventory monitoring applications. With the formulation, they illustrate that tag duplication problems can exist in the network layer due to tags' mobility and overlaps of RFID readers' interrogation zones.