Séminaire Mathématique de Béjaia
Volume 16, Numéro 1, Pages 106-106
2018-12-31
Performance Modeling Of The Ieee 802.15.4e Tsch Csma-ca Algorithm Under Non-ideal Channel
Authors : Touloum Soraya . Bouallouche-medjkoune Louiza . Aïssani Djamil .
Abstract
IEEE 802.15.4e is a new amendment developed by the IEEE organism in 2012, which expands the original 802.15.4 Medium Access Control (MAC), because the latter does not address the needs of IWSNs applications' requirements. Indeed, the key feature of this amendment is the creation of new interesting MAC protocols, namely: Low Latency Deterministic Network (LLDN), Deterministic and Synchronous Multichannel Extension (DSME) and Time Slotted Channel Hopping (TSCH). TSCH combines time slots with channel hopping and defines shared and dedicated links. A shared link is dedicated to more than one sender, which leads to collisions. To decrease the probability of repeated collisions in the packet retransmission, the 802.15.4e proposed the TSCH Collision Avoidance (TSCH-CA) algorithm. In this work, we propose a bedimensional Markov chain model to evaluate performances of the TSCH-CA algorithm when only shared links are used, under non-ideal channel. Based on the proposed model, we derive the expressions of different performance metrics that include retransmission probability, data packet loss rate, reliability, energy consumption, normalized throughput and average access delay.
Keywords
IEEE 802.15.4e; TSCH CSMA-CA; Non-ideal channel; Markov Chains; Performances analysis.
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