TY - GEN
T1 - A new slot-count selection algorithm for RFID protocol
AU - Daneshmand, Mahmoud
AU - Wang, Chonggang
AU - Sohraby, Kazem
PY - 2007
Y1 - 2007
N2 - EPCglobal RFID generation-2 (Gen-2) protocol [1] has been proposed for ultra-high frequency (UHF) passive tags and is being deployed. Gen-2 proposes a slotted random anti-collision algorithm, including an adaptive slot-count (Q) selection algorithm. The integer-valued parameter Q in Gen-2 plays a critical role in tag collision resolution. This adaptive algorithm dynamically adjusts value of Q based on the type of replies from tags. However, it modifies the value of Q the same way whether there is a "collided reply" or "no reply". This approach could lead to a slow tag identification speed, since it does not recognize the differences in duration between the "collided reply" and "no reply". This paper proposes a new slot-count selection algorithm which changes the parameter Q with different amounts depending on whether the reader receives a "collided reply" or there is "no reply" by a pre-specified waiting time. It is demonstrated, through analysis and simulations, that the new proposed algorithm achieves significantly faster tag identification speed compared to that of the existing Gen-2 adaptive Q algorithm.
AB - EPCglobal RFID generation-2 (Gen-2) protocol [1] has been proposed for ultra-high frequency (UHF) passive tags and is being deployed. Gen-2 proposes a slotted random anti-collision algorithm, including an adaptive slot-count (Q) selection algorithm. The integer-valued parameter Q in Gen-2 plays a critical role in tag collision resolution. This adaptive algorithm dynamically adjusts value of Q based on the type of replies from tags. However, it modifies the value of Q the same way whether there is a "collided reply" or "no reply". This approach could lead to a slow tag identification speed, since it does not recognize the differences in duration between the "collided reply" and "no reply". This paper proposes a new slot-count selection algorithm which changes the parameter Q with different amounts depending on whether the reader receives a "collided reply" or there is "no reply" by a pre-specified waiting time. It is demonstrated, through analysis and simulations, that the new proposed algorithm achieves significantly faster tag identification speed compared to that of the existing Gen-2 adaptive Q algorithm.
KW - Anti-collision protocol
KW - Generation-2 RFID protocol
KW - RFID
KW - Tag identification speed
UR - http://www.scopus.com/inward/record.url?scp=43949136926&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=43949136926&partnerID=8YFLogxK
U2 - 10.1109/CHINACOM.2007.4469535
DO - 10.1109/CHINACOM.2007.4469535
M3 - Conference contribution
AN - SCOPUS:43949136926
SN - 9781424410095
T3 - Proceedings of the Second International Conference on Communications and Networking in China, ChinaCom 2007
SP - 926
EP - 930
BT - Proceedings of the Second International Conference on Communications and Networking in China, ChinaCom 2007
T2 - 2007 2nd International Conference on Communications and Networking in China, ChinaCom 2007
Y2 - 22 August 2007 through 24 August 2007
ER -