naa a22 4500 510792294 CHVBK 20180411083324.0 cr unu---uuuuu 180411e20130801xx s 000 0 eng 10.1007/s11277-013-0996-0 doi (NATIONALLICENCE)springer-10.1007/s11277-013-0996-0 Cooperative Association/Re-association Approaches to Optimize Energy Consumption for Real-Time IEEE 802.15.4/ZigBee Wireless Sensor Networks [Elektronische Daten] [Sofiane Ouni, Zayneb Ayoub] The major challenge of real-time Wireless Sensor Networks stills the optimization of both constraints: energy consumption, to get long network lifetime and the communication delay, to meet real-time requirements. In the context of IEEE 802.15.4/ZigBee networks, the association procedure has a direct effect on building paths optimizing those constraints. In this paper, we are interested on the definition of an ideal approach of load balancing to fairly distribute energy consumption among nodes in IEEE 802.15.4/ZigBee WSNs. This approach leads to conserve energy of each node in order to extend the network lifetime. To be closer to this ideal, we propose new dynamic association/re-association approaches allowing path alternation relative to association criteria and their threshold parameters. The implementation of those approaches in NS2 simulator highlights the efficiency of cooperative and dynamic association criteria particularly the one based on the sum of the inverses of remaining energy. Indeed, this approach gives better results with regard to energy distribution according to ideal approach which leads to a longer lifetime. It also performs lower latency for real time communication. Springer Science+Business Media New York, 2013 Wireless Sensor Networks nationallicence Re-association nationallicence Energy consumption nationallicence Communication delay nationallicence IEEE 802.15.4/ZigBee nationallicence Load balancing nationallicence Ouni Sofiane RAMSIS, CRISTAL Laboratory, Ecole Nationale des Sciences de l'Informatique, Manouba, Tunisia aut Ayoub Zayneb RAMSIS, CRISTAL Laboratory, Ecole Nationale des Sciences de l'Informatique, Manouba, Tunisia aut Wireless Personal Communications Springer US; http://www.springer-ny.com 71/4(2013-08-01), 3157-3183 0929-6212 71:4<3157 2013 71 11277 https://doi.org/10.1007/s11277-013-0996-0 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11277-013-0996-0 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Ouni Sofiane RAMSIS, CRISTAL Laboratory, Ecole Nationale des Sciences de l'Informatique, Manouba, Tunisia aut NATIONALLICENCE 700 1- Ayoub Zayneb RAMSIS, CRISTAL Laboratory, Ecole Nationale des Sciences de l'Informatique, Manouba, Tunisia aut NATIONALLICENCE 773 0- Wireless Personal Communications Springer US; http://www.springer-ny.com 71/4(2013-08-01), 3157-3183 0929-6212 71:4<3157 2013 71 11277 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer