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Optimal Dynamic Frame-Slotted Aloha: (ODFSA)
Högskolan i Jönköping, Tekniska Högskolan, JTH, Data- och elektroteknik. (Wireless communication)
Högskolan i Jönköping, Tekniska Högskolan, JTH, Data- och elektroteknik. (Wireless communication)
Högskolan i Jönköping, Tekniska Högskolan, JTH, Data- och elektroteknik. (Wireless communication)
2011 (engelsk)Inngår i: Optimal Dynamic Frame Slotted Aloha, Proceedings of the 7th International Conference on Wireless Communications Networking and Mobile Computing, Wuhan China, Sep 23, 2011 - Sep 25, 2011: ODFSA / [ed] Mian Hammad Nazir,Youzhi Xu,Alf Johansson, IEEE: IEEE , 2011, s. 1-4Konferansepaper, Publicerat paper (Fagfellevurdert)
Abstract [en]

Passive UHF RFID systems using Dynamic Frame-Slotted ALOHA (DFSA) adjust the frame size according to the number of tags, but frame size N is equals to 2^Q and cannot be adjusted exactly to the number of tags to be identified. In this paper, we propose an optimal Aloha algorithm (ODFSA), which uses probabilistic approach for tags to access the frame. The Query or Query Adjust packet contains both the parameter Q and P called frame access probability, which represents the ratio of number of active tags in the current frame to the estimated total number of tags which remain to be identified in the system. Estimation of number of unread tags is updated after end of each frame; parameters Q and P are calculated and informed at the beginning of each frame. Mathematical analysis and computer simulations show that the proposed Aloha achieves maximum system efficiency, utilizes less number of slots compared with other algorithms and also takes less identification time.

 

sted, utgiver, år, opplag, sider
IEEE: IEEE , 2011. s. 1-4
Emneord [en]
Passive UHF RFID, Anti-collision, EPC global class 1 Generation2, Maximum system efficiency.
HSV kategori
Identifikatorer
URN: urn:nbn:se:hj:diva-15338OAI: oai:DiVA.org:hj-15338DiVA, id: diva2:422288
Konferanse
7th International Conference on Wireless Communications Networking and Mobile Computing,Wuhan
Prosjekter
Anti-collision algorithms and performance analysis for UHF passive RFID networks (Master Thesis,2011,Embedded System)
Merknad
IEEE PID:1093642, Article Source : CXP-1093642,conference ID:92731,Tilgjengelig fra: 2011-06-28 Laget: 2011-06-11 Sist oppdatert: 2011-06-28bibliografisk kontrollert

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Optimal Dynamic Frame-Slotted Aloha,(ODFSA)(411 kB)653 nedlastinger
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Nazir, Mian HammadXu, YouzhiJohansson, Alf

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