WiSense Seminar #113, “Impact of Variable CCA Periods on the Efficiency of IEEE 802.15.4 MAC Protocol”, M.Guennoun
Title: WiSense Seminar #113, “Impact of Variable CCA Periods on the Efficiency of IEEE 802.15.4 MAC Protocol”
Speaker: Mouhcine Guennoun
Description: Towards designing a new efficient Medium Access Control (MAC) protocol that overcomes the shortcomings of the 802.15.4 standard MAC, we propose to exploit the Clear Channel Assessment (CCA) feature in a more efficient fashion. In this presentation we study the impact of increasing the number of CCAs performed by a node beyond the standard value of 2. We develop a mathematical model that describes the functionality of the outcome MAC protocol. We derive the theoretical expressions of the probability of collision, throughput, channel idle time, channel collision time, energy consumption, delay, and reliability. We validate the model using an in house built WSN simulator. We then propose the Semi-Persistent MAC (SP-MAC) protocol that combines the advantages of the 802.11 and 802.15.4 Carrier Sense Medium Access.
Bio Notes: Mouhcine Guennoun is a Ph.D. student at the School of Electrical Engineering and Computer Science, University of Ottawa. His research interests include WSN MAC performance optimization, wireless security, and intrusion detection in Ad-Hoc wireless networks.
Start Time: 10:00
End Time: 12:00