Izvorni znanstveni članak
Algorithm for Deriving Optimal Frame Size in Passive RFID UHF Class1-Gen2 Standard Using Combinatorial Model Boundaries
Petar Šolić
; Fakultet elektrotehnike, strojarstva i brodogradnje Sveučilišta u Splitu, Split, Hrvatska
Joško Radić
; Fakultet elektrotehnike, strojarstva i brodogradnje Sveučilišta u Splitu, Split, Hrvatska
Nikola Rožić
orcid.org/0000-0002-5445-8805
; Fakultet elektrotehnike, strojarstva i brodogradnje Sveučilišta u Splitu, Split, Hrvatska
Sažetak
MAC level efficiency constraints of the RFID Reader-Tag communication require proper frame size selection in order to achieve maximum throughput. To set optimal frame size, one needs to estimate the number of tags. Deriving optimal frame size results in reducing time for identification of large RFID tag populations, and thus increases throughput of RFID system. In accordance with the standard Dynamic Framed Slotted ALOHA (DFSA) protocol, we propose model for frame size adaptation using number of collisions (C) and successful slots (S) within the frame length L. We found
that expected number of tags N, linearly depends on S in the frame of length L, for fixed C. Proposed model for estimation of the number of tags can be described with 4 characteristic points, which can be calculated from proposed combinatorial model. Algorithm implementation in the first step estimates number of tags, and then in
the second step, using the estimates, set the optimal frame size.
In order to compare proposed system performance with the other approaches, we use standard measures, System Efficiency and Collision Ratio. Simulation results show that our method provide better performance than the Qselection algorithm, specified within the UHF-Class1-Gen2 standard.
Ključne riječi
Dynamic framed slotted ALOHA; Transmission control strategy; Q-selection algorithm; RFID identification; Tags estimation method (TEM)
Hrčak ID:
61548
URI
Datum izdavanja:
30.9.2010.
Posjeta: 1.852 *