Adaptive slotted CSMA/CA algorithm for the traffic accumulated during the inactive period

Authors:
Nassima Hadid;Alexandre Guitton;Michel Misson
Affiliations:
LIMOS CNRS, Clermont-Ferrand, France;LIMOS CNRS, Clermont-Ferrand, France;LIMOS CNRS, Clermont-Ferrand, France
Venue:
Proceedings of the 6th ACM symposium on Performance evaluation of wireless ad hoc, sensor, and ubiquitous networks
Year:
2009

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Abstract

Wireless sensor networks, widely used in the industry, must comply to severe energy constraints. IEEE 802.15.4 proposes a mode where the sensors access to the channel with slotted CSMA/CA mechanism, and save energy during an inactive period. In this paper, we study the impact of the inactive period on the performance of the slotted CSMA/CA algorithm. We notice that the slotted CSMA/CA algorithm induces a lot of packet loss because of collisions and channel access failures. We reduce these problems by proposing an adaptive slotted CSMA/CA algorithm. The simulation results show that our algorithm is better than the standard.