11, Mar, 2009
ISEP-IPP, Porto, Portugal

The work carried out in this Masters Thesis focuses on the use of standard protocols (IEEE 802.15.4 and ZigBee) over commercial-off-the-shelf hardware (e.g. MICAz, TelosB, FLEX motes) and operating systems (TinyOS, ERIKA) for improving the Quality-of-Service (QoS) properties in Wireless Sensor Networks. We aim at closing the gap between theoretical/simulation work and the real world by performing a series of implementations, comparisons and validations based on analytical, simulation and experimental models on topics such as: (1) evaluation of the network performance of the IEEE 802.15.4 Slotted CSMA/CA mechanism; (2) validation of a mechanism to mitigate the hidden-terminal problem and its demonstration in a real application scenario; (3) experimental validation of a methodology for modeling cluster-tree WSNs and computing the worst-case end-to-end delays, buffering and bandwidth requirements. This Thesis also identifies a number of technological constrains, namely related to hardware/software and to the open-ZB IEEE 802.15.4/ZigBee protocol stack implementation in the TinyOS operating system, which triggered its migration to the ERIKA real-time operating system.
When: 12:00
Where: Room H202 / Auditório H

CISTER's main roles: