Issue No.03 - March (2012 vol.11)
Karsten Fyhn , Dept. of Electron. Syst., Aalborg Univ., Aalborg, Denmark
P. Popovski , Dept. of Electron. Syst., Aalborg Univ., Aalborg, Denmark
T. Larsen , Dept. of Electron. Syst., Aalborg Univ., Aalborg, Denmark
DOI Bookmark: http://doi.ieeecomputersociety.org/10.1109/TMC.2011.62
The technology of Radio Frequency IDentification (RFID) enables many applications that rely on passive, battery-less wireless devices. If a RFID reader needs to gather the ID from multiple tags in its range, then it needs to run an anticollision protocol. Due to errors on the wireless link, a single reader session, which contains one full execution of the anticollision protocol, may not be sufficient to retrieve the ID of all tags. This problem can be mitigated by running multiple, redundant reader sessions and use the statistical relationship between these sessions. On the other hand, each session is time consuming and therefore the number of sessions should be kept minimal. We optimize the process of running multiple reader sessions, by allowing only some of the tags already discovered to reply in subsequent reader sessions. The estimation procedure is integrated with an actual tree-based anticollision protocol, and numerical results show that the reliable tag resolution algorithm attain high speed of protocol execution, while not sacrificing the reliability of the estimators used to assess the probability of missing tags.
trees (mathematics), optimisation, protocols, radio links, radiofrequency identification, statistical analysis, telecommunication network reliability, probability, recapture approach, missing RFID tags, radiofrequency identification tags, battery-less wireless devices, RFID reader, anticollision protocol, wireless link, single reader session, redundant reader sessions, statistical relationship, actual tree-based anticollision protocol, tag resolution algorithm, protocol execution, reliability, Protocols, Estimation, Radiofrequency identification, Wireless communication, Passive networks, anticollision protocols., RFID, reliable arbitration process
Karsten Fyhn, P. Popovski, T. Larsen, "Fast Capture—Recapture Approach for Mitigating the Problem of Missing RFID Tags", IEEE Transactions on Mobile Computing, vol.11, no. 3, pp. 518-528, March 2012, doi:10.1109/TMC.2011.62