Publications:An Energy and Application Scenario Aware Active RFID Protocol
From CERES
| Title | An Energy and Application Scenario Aware Active RFID Protocol |
|---|---|
| Author | Björn Nilsson and Lars Bengtsson and Bertil Svensson |
| Year | 2010 |
| PublicationType | Journal Paper |
| Journal | EURASIP Journal on Wireless Communications and Networking |
| HostPublication | |
| DOI | http://dx.doi.org/10.1155/2010/432938 |
| Conference | |
| Diva url | http://hh.diva-portal.org/smash/record.jsf?searchId=1&pid=diva2:390137 |
| Abstract | The communication protocol used is a key issue in order to make the most of the advantages of active RFID technologies. In this paper we introduce a carrier sense medium access data communication protocol that dynamically adjusts its back-off algorithm to best suit the actual application at hand. Based on a simulation study of the effect on tag energy cost, read-out delay, and message throughput incurred by some typical back-off algorithms in a CSMA/CA (Carrier Sense Multiple Access/Collision Avoidance) active RFID protocol, we conclude that by dynamic tuning of the initial contention window size and back-off interval coefficient, tag energy consumption and read-out delay can be significantly lowered. We show that it is possible to decrease the energy consumption per tag payload delivery with more than 10 times, resulting in a 50% increase in tag battery lifetime. We also discuss the advantage of being able to predict the number of tags present at the RFID-reader as well as ways of doing it. |
