Affiliations: [a] LRIT-GSCM Associated Unit to CNRST (URAC 29), FSR Mohammed V University, Rabat, Morocco. E-mails: [email protected], [email protected] | [b] Accounting LETI Laboratory, Hassania School of Public Labors, Casablanca, Morocco. E-mail: [email protected]
Correspondence:
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Corresponding author: Anouar Darif, LRIT-GSCM Associated Unit to CNRST (URAC 29), FSR Mohammed V-Agdal University, BP 1014, Rabat, Morocco. E-mail: [email protected].
Abstract: Impulse Radio Ultra Wideband is a new efficient short range wireless communication technology for wireless sensor network applications. Its impulsional nature makes it robust to multipath fading, as the short duration of the pulses leads most multipath components to arrive isolated with short energy pulses instead of a carrier signal. For a good exploitation of this new technology, we need a suitable Medium Access Control protocol in the MAC layer. WideMac was the first MAC protocol trying to implement adaptive low power consumption to IR-UWB technology. The Backoff algorithm used by this protocol is Modified Binary Exponent Backoff (MBEB). The unfair access to the transmission channel represents the major problem of this algorithm. In this paper, we introduce a new Backoff algorithm based on Fuzzy Logic called FLB (Fuzzy Logic Backoff) to improve the Packet Delivery Ratio (PDR) and decrease the number of dropped packets from the nodes’ buffer. To analyze and evaluate the performance of the proposed backoff algorithm, a simulation of a sink based architecture network with various nodes’ number has been performed.
