DocumentCode :
3671581
Title :
Messages prioritization in IEEE 802.15.4 based WSNs for roadside infrastructure
Author :
Imane Horiya Brahmi;Soufiene Djahel;Damien Magoni;John Murphy
Author_Institution :
UCD School of Computer Science and Informatics, Ireland University of Bordeaux - LaBRI, France
fYear :
2014
Firstpage :
1106
Lastpage :
1113
Abstract :
Wireless Sensor Networks (WSNs) have gained wide-scale popularity for real-time events monitoring and detection due to their high accuracy and ease of deployment. Therefore, they have become increasingly prevalent solutions in several application domains such as health-care, transportation, etc. Many studies in the literature have focused on optimizing the energy consumption of the wireless sensors in order to ensure their autonomous operation for longer periods. Some applications of WSNs, however, have strict delay requirements due to the nature of the information being transmitted. This delay should be kept as short as possible to ensure timely and efficient reaction of the system, such as a Traffic Management System (TMS) dealing with an incident on the road. In this context, we propose in this work, two novel schemes to reduce the transmission delay of prioritized messages in WSNs deployed in road networks to report regular traffic as well as event-driven (i.e. incidents) information. These schemes improve the backoff computation mechanism at the MAC layer of IEEE 802.15.4 standard protocol, by providing an original dual mode operation mechanism which speeds up the transmission of event-driven messages, while keeping the transmission delay of periodic messages reasonably low. Simulation results show that our schemes succeed in reducing the transmission delay of event-driven messages and achieve a very high packets delivery ratio.
Keywords :
"Wireless sensor networks","Delays","Roads","Monitoring","Standards","Switches","Logic gates"
Publisher :
ieee
Conference_Titel :
Connected Vehicles and Expo (ICCVE), 2014 International Conference on
Type :
conf
DOI :
10.1109/ICCVE.2014.7297521
Filename :
7297521
Link To Document :
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