Performance evaluation of non-persistent CSMA as anti-collision protocol for active RFID tags.
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AuthorEgea López, Estebán; Vales Alonso, Javier; Martínez Sala, Alejandro Santos; Bueno Delgado, María Víctoria; García Haro, Juan
Knowledge AreaIngeniería Telemática
SponsorsThis work has been funded by the Spanish Ministerio de Educación y Ciencia with the projects DEP2006-56158-C03-03/EQUI and m:ciudad (FIT-330503- 2006-2, partially funded by ERDF) and by the Spanish Research Council with the ARPaq project (TEC2004-05622-C04-02/TCM).
Bibliographic CitationEGEA LÓPEZ, E., VALES ALONSO, J., MARTÍNEZ SALA, A., BUENO DELGADO, M.V., GARCÍA HARO, J. Performance evaluation of non-persistent CSMA as anti-collision protocol for active RFID tags. Lecture Notes in Computer Science, vol.4517: 279-289, 2007. ISSN 0302-9743
KeywordsRadio Frequency Identification (RFID)
Non persistent CSMA
EPC Gen 2
Identificación por radiofrecuencia
CSMA no persistente
Evaluación del rendimiento
Activador de targeta RFID
Active RFID tag
In this paper we propose the use of non-persistent CSMA as an anti-collision procedure for RFID active tags. Current proposals for both passive and active tags are based on the framed slotted ALOHA protocol, which does not scale well requiring additional procedures for frame length adaptation. However, active RFID devices already include carrier sense capabilities with no additional cost and, thus, CSMA may be employed seamlessly. Nevertheless, selecting the contention micro-slots of CSMA in the classical way (i.e., with a uniform distribution and an exponential back-off algorithm) does not result in an efficient identification process, as we will demonstrate. Fortunately, better choices can be found. Recently, an optimal distribution for the selection of micro-slots for event-driven sensor networks has been computed, as well as a practical implementation: the Sift distribution. In this work we propose the application of the quasi-optimal Sift distribution along with CSMA for active ...
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