Performance Evaluation of Channel Access Methods for Dedicated IoT Networks

Abderrahman Khalifa 1 Razvan Stanica 1
1 AGORA - ALGorithmes et Optimisation pour Réseaux Autonomes
Inria Grenoble - Rhône-Alpes, CITI - CITI Centre of Innovation in Telecommunications and Integration of services
Abstract : Networking technologies dedicated for the Internet of Things are different from the classical mobile networks in terms of architecture and applications. This new type of network is facing several challenges to satisfy specific user requirements. Sharing the communication medium between (hundreds of) thousands of connected nodes and one base station is one of these main requirements, hence the necessity to imagine new solutions, or to adapt existing ones, for medium access control. In this paper, we start by comparing two classical medium access control protocols, CSMA/CA and Aloha, in the context of Internet of Things dedicated networks. We continue by evaluating a specific adaptation of Aloha, already used in low-power wide area networks, where no acknowledgement messages are transmitted in the network. Finally, we apply the same concept to CSMA/CA, showing that this can bring a number of benefits. The results we obtain after a thorough simulation study show that the choice of the best protocol depends on many parameters (number of connected objects, traffic arrival rate, allowed retransmission number), as well as on the metric of interest (e.g. packet reception probability or energy consumption).
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Abderrahman Khalifa, Razvan Stanica. Performance Evaluation of Channel Access Methods for Dedicated IoT Networks. WD 2019 - 11th IFIP Annual Wireless Days Conference, Apr 2019, Manchester, United Kingdom. pp.1-6, ⟨10.1109/WD.2019.8734186⟩. ⟨hal-02042688⟩

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