HAMAC: High Adaptive MAC Protocol for Dense RFID reader-to-reader Networks
Résumé
This paper proposes a high adaptive contentionbased
medium access control (HAMAC) protocol that considerably
reduces readers collision problems in a large-scale dynamic RFID
system. HAMAC is based only on realistic assumptions that can
be experimented and does not require any additional components
on RFID reader in order to improve the performance in terms of
throughput, fairness and latency. The central idea of the HAMAC
is for the RFID reader to use a WSN-like CSMA approach
and to set its initial backoff counter to the maximum value
that allows to mitigate collision. Then, according to the network
congestion on physical channels the reader tries to dynamically
control its contention window by linear decreasing on selected
physical channel or multiplicative decreasing after scanning all
available physical channels. Extensive simulations are proposed
to highlight the performance of HAMAC compared to literature’s
work in large-scale RFID systems where both readers and
tags are mobile. Simulation results show the effectiveness and
robustness of the proposed anti-collision protocol in terms of
network throughput, fairness, coverage and time to read all tags.
Origine | Fichiers produits par l'(les) auteur(s) |
---|
Loading...