Search

Your search keyword '"Affoua Thérèse Aby"' showing total 6 results
Start Over Author "Affoua Thérèse Aby"
6 results on '"Affoua Thérèse Aby"'

1. History-based MAC Protocol for Low Duty-Cycle Wireless Sensor Networks: the SLACK-MAC Protocol

Author

Affoua Thérèse Aby, Alexandre Guitton, Pascal Lafourcade, and Michel Misson

Subjects
WSN, adaptive, asynchronous MAC protocol, duty-cycle, Telecommunication, TK5101-6720
Abstract

Wireless sensor networks (WSNs) are increasingly used in environmental monitoring applications. They are designed to operate for several months by featuring low activity cycles in order to save energy. In this paper, we propose a Medium Access Control (MAC) protocol for suchWSNs with very low duty-cycles of 1% and less. Nodes are activated randomly and use a history of previous successful frame exchanges to decide their next activation time. We study the choice of the history size, and we compare the performance of our protocol with other protocols from the literature. We show by simulations and real experiments that with a limited history size of only six entries, our protocol achieves better performance than other protocols from the literature, while keeping the advantages of fully asynchronous protocols.

Published
2016
Full Text
View/download PDF

4. Study of Blind Rendez-Vous in Low Power Wireless Sensor Networks

Author

Michel Misson, Affoua Thérèse Aby, Alexandre Guitton, Guitton, Alexandre, Laboratoire d'Informatique, de Modélisation et d'Optimisation des Systèmes (LIMOS), Ecole Nationale Supérieure des Mines de St Etienne-Centre National de la Recherche Scientifique (CNRS)-Université Clermont Auvergne [2017-2020] (UCA [2017-2020]), Université Clermont Auvergne [2017-2020] (UCA [2017-2020]), Laboratoire d'Informatique, de Modélisation et d'optimisation des Systèmes (LIMOS), SIGMA Clermont (SIGMA Clermont)-Université d'Auvergne - Clermont-Ferrand I (UdA)-Ecole Nationale Supérieure des Mines de St Etienne-Centre National de la Recherche Scientifique (CNRS)-Université Blaise Pascal - Clermont-Ferrand 2 (UBP), Ecole Nationale Supérieure des Mines de St Etienne (ENSM ST-ETIENNE)-Université Clermont Auvergne [2017-2020] (UCA [2017-2020])-Centre National de la Recherche Scientifique (CNRS), and Université Blaise Pascal - Clermont-Ferrand 2 (UBP)-Université d'Auvergne - Clermont-Ferrand I (UdA)-SIGMA Clermont (SIGMA Clermont)-Ecole Nationale Supérieure des Mines de St Etienne (ENSM ST-ETIENNE)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Engineering, [INFO.INFO-NI] Computer Science [cs]/Networking and Internet Architecture [cs.NI], business.industry, 020206 networking & telecommunications, 02 engineering and technology, Energy consumption, Synchronization, [INFO.INFO-NI]Computer Science [cs]/Networking and Internet Architecture [cs.NI], Key distribution in wireless sensor networks, Node (computer science), Scalability, 0202 electrical engineering, electronic engineering, information engineering, Mobile wireless sensor network, 020201 artificial intelligence & image processing, business, Wireless sensor network, Computer network, Efficient energy use
Abstract

International audience; In wireless sensor networks (WSNs) applications such as environmental monitoring, it is essential to design protocols that are energy efficient and that are scalable. The main technique to reduce energy consumption is to use a duty-cycle, where nodes periodically go to sleep. However, the implementation of such a duty-cycle often requires nodes to be synchronized, which is difficult to achieve in a scalable manner. In this paper, we study the delay of blind rendezvous for unsynchronized nodes, that is the delay required for two unsynchronized nodes to be active at the same time. There are several major advantages of blind rendezvous: nodes do not need to share a prior knowledge, nodes do not need to be synchronized, and the support for network dynamicity (due to node mobility or failure) is simplified. We show through simulations that the delay to achieve a blind rendezvous is reasonable in many scenarios.

Published
2014
Full Text
View/download PDF

5. Asynchronous blind MAC protocol for wireless sensor networks

Author

Affoua Thérèse Aby, Alexandre Guitton, Michel Misson, Laboratoire d'Informatique, de Modélisation et d'Optimisation des Systèmes (LIMOS), Ecole Nationale Supérieure des Mines de St Etienne (ENSM ST-ETIENNE)-Université Clermont Auvergne [2017-2020] (UCA [2017-2020])-Centre National de la Recherche Scientifique (CNRS), Université Clermont Auvergne [2017-2020] (UCA [2017-2020]), Laboratoire d'Informatique, de Modélisation et d'optimisation des Systèmes (LIMOS), Université Blaise Pascal - Clermont-Ferrand 2 (UBP)-Université d'Auvergne - Clermont-Ferrand I (UdA)-SIGMA Clermont (SIGMA Clermont)-Ecole Nationale Supérieure des Mines de St Etienne (ENSM ST-ETIENNE)-Centre National de la Recherche Scientifique (CNRS), Guitton, Alexandre, Ecole Nationale Supérieure des Mines de St Etienne-Centre National de la Recherche Scientifique (CNRS)-Université Clermont Auvergne [2017-2020] (UCA [2017-2020]), and SIGMA Clermont (SIGMA Clermont)-Université d'Auvergne - Clermont-Ferrand I (UdA)-Ecole Nationale Supérieure des Mines de St Etienne-Centre National de la Recherche Scientifique (CNRS)-Université Blaise Pascal - Clermont-Ferrand 2 (UBP)

Subjects
SIMPLE (military communications protocol), [INFO.INFO-NI] Computer Science [cs]/Networking and Internet Architecture [cs.NI], Computer science, business.industry, Inter-Access Point Protocol, Real-time computing, blind protocol, Rendezvous, Ranging, Energy conservation, Key distribution in wireless sensor networks, MAC protocol, [INFO.INFO-NI]Computer Science [cs]/Networking and Internet Architecture [cs.NI], Asynchronous communication, business, Protocol (object-oriented programming), Wireless sensor network, asynchronous duty-cycle, Computer network, IEEE 802154
Abstract

International audience; In the past few years, energy conservation has been the main focus of researchers working on wireless sensor networks. One of the main technique to save energy is to deactivate periodically the radio module of sensor nodes: nodes alternate periods of activity and periods of inactivity, which is referred to as their duty-cycle. In this paper, we focus on asynchronous duty-cycle mechanisms, as these mechanisms are usually simple, do not require time synchronization and support network changes. We propose an asynchronous MAC protocol based on blind rendezvous and random wake-up. Our protocol is based on a modification of the IEEE 802.15.4 standard, where activities start at a random time within each activity cycle. Our simulations show that our protocol can achieve a good performance under various scenarios, for small duty cycles (ranging from 0.1% to 5%).

Published
2014

6. History-based MAC Protocol for Low Duty-Cycle Wireless Sensor Networks: the SLACK-MAC Protocol

Author

Affoua Therese Aby, Alexandre Guitton, Pascal Lafourcade, and Michel Misson

Subjects
WSN, adaptive, asynchronous MAC protocol, duty-cycle, Telecommunication, TK5101-6720
Abstract

Wireless sensor networks (WSNs) are increasingly used in environmental monitoring applications. They are designed to operate for several months by featuring low activity cycles in order to save energy. In this paper, we propose a Medium Access Control (MAC) protocol for such WSNs with very low duty-cycles of 1% and less. Nodes are activated randomly and use a history of previous successful frame exchanges to decide their next activation time. We study the choice of the history size, and we compare the performance of our protocol with other protocols from the literature. We show by simulations and real experiments that with a limited history size of only six entries, our protocol achieves better performance than other protocols from the literature, while keeping the advantages of fully asynchronous protocols.

Published
2017
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results